Vehicle master cylinder mounting structure

Background of the Invention

1. Field of the Invention

The present invention relates to a mounting arrangement for a vehicle master cylinder, which is activated by a pedal operation is, so that a hydrostatic pressure to generate.

2. Description of Related of the technique

Usually is a master cylinder in a clutch mechanism or braking mechanism of a vehicle is used, located within a motor chamber, as described, for example, in Japanese Patent Laid Nos. Hei. shown 9-254821.

In a construction in which the master cylinder is angeordret within the engine compartment, but there are a lot restrictions with regard to the embodiment, as various auxiliary components also arranged within the motor chamber together with the motor, etc. are. For this reason, a configuration has been developed in which the master cylinder in the vehicle interior is arranged and this master cylinder is attached to a pedal bracket supporting a pedal.

If, however, in a construction in which the master cylinder is attached to the pedal bracket, an external force acts on the front part of the vehicle which is greater than a specific value is, the external force is via the motor on a footboard (a Operating plate) entered to the space within the vehicle and the motor chamber aufzu share. Since in this case the actuating plate substantially deformed in the direction of the rear end of the vehicle body is, the master cylinder which is attached to the pedal bracket is also compressed and in the direction of the rear end Vehicle body moved. Furthermore, the main cylinder mechanically connected to the pedal and with the displacement of the The master cylinder towards the rear vehicle end, the Pedal also shifted toward the rear vehicle end. When the pedal, as described above, is shifted, the Legroom in front of the driver's seat is reduced, which makes it likely that the pedal hinders the shins and feet of the driver.

Reference is also made to US-A-5,896,781 taken which corresponds to the preamble of claim 1 and operated in a vehicle Pedal unit mounted on a front wall of a vehicle passenger compartment and has a structure for having a pedal support on which the pedals rotatably with the aid of are mounted by screws, and which includes a region which extends upwardly such that it transversely in the upper part of a arranged frame element is arranged mounted on the these , and which is sufficiently strong to withstand forces to which a brake unit, mounted on the opposite side of the front wall, while may be exposed to a collision. At least the brake pedal has an extension, extending to a point adjacent to the transversely arranged frame member extends, to prevent the brake pedal by the brake actuated Rod in the footwell of the vehicle is bent when the brake unit and the operation rod while a collision are pressed inward.

Object of the present invention is to provide a mounting assembly for a vehicle master cylinder bereitzustel len, which shift the prevents a pedal to the rear end of the vehicle so that it is possible is a large footwell maintain before the driver's seat.

Summary the invention

According to the invention a mounting arrangement is provided, comprising a vehicle master cylinder activated by a pedal is, so that a hydrostatic pressure is generated, wherein: Master cylinder comprises a cylinder body, the longitudinally extends along the vehicle, and a piston slidable in the mounted cylinder body is, having a pedal pivotally supported by a pedal bracket is maintained, the damping plate at a of the vehicle is fixed, the piston via a piston rod with the Pedal is connected, the cylinder body with the aid of at least one The fastening element is fixed to the pedal bracket, and Fastener having an axis through the extending width of the vehicle and is adapted to the cylinder body so to. hold, that it is pivotable about the axis, characterized in that that either the piston rod or the piston has a head region enlarged diameter comprises of a partially spherical Form, the other element of the piston rod and piston a depression defining a partially spherical shape has, and the head portion of increased diameter in contact comes with the recess so that a contact between the head region enlarged diameter the depression can be maintained even when the piston rod around the cylinder body is pivoted, and the fixing member to the cylinder body having a specific Fastening force mounted, such that the cylinder body is not. is pivoted about the axis when the pedal is operated, however, the cylinder body to The axis is swung, if the damping plate is deformed and the front end of the cylinder body rearwardly <?page 3?>suppressed.

According to this aspect of the invention, the master cylinder is attached to the pedal bracket, so that he able is to be rotated a fixed shaft on the extending the width of the vehicle body. When an external force, greater than a specific value is applied to the front of the vehicle, and an operating plate is shifted toward the rear vehicle end to the external force to transmit to the master cylinder, the master cylinder to the solid shaft on the Width of the vehicle body extends, pivoted. Since the master cylinder is pivoted, the displacement of the master cylinder itself suppressed in the direction of the rear end of the vehicle, and the displacement of the Pedal towards the end of the vehicle, which with the displacement of the master cylinder is associated, is also suppressed. as a result thereof, it is possible a big footwell maintain before the driver's seat.

According to one embodiment the master cylinder at a single flange portion on the cylinder body is formed, attached to the pedal bracket. By the master cylinder is attached to a point on the pedal bracket, it is with This mounting structure possible to cause the master cylinder simply by a fixed shaft is pivoted about the extending the width of the vehicle.

In an arrangement of this flange portion is closer to the Pedal positioned as the central longitudinally extending region of Cylinder body. By adjusting the position of attachment of the master cylinder to the pedal bracket closer to the pedal side is arranged as the center of the master cylinder, Is it possible, to cause the master cylinder simple and easy one fixed shaft oscillates, which extends over the width of the vehicle extends.

The master cylinder can obliquely with respect to the longitudinal direction the vehicle can be arranged. In this mounting arrangement for a Vehicle master cylinder, the master cylinder inclined with respect to the longitudinal direction disposed of the vehicle, to cause the main cylinder be turned more easily and more readily by a fixed shaft can, of about extending the width of the vehicle.

When an external force which is greater than a specific value is applied to the front of the vehicle, and the external force on a Baffle plate is transmitted to the master cylinder, it is equipped with the mounting arrangement of the invention for one Vehicle master cylinder possible that the master cylinder is pivoted about a fixed axis, the over the extending the width of the vehicle body. The displacement of the vehicle master cylinder in the direction of the rear end of the vehicle by pivoting of the master cylinder is suppressed, and the displacement of the pedal in the direction of the rear end of the vehicle, which is accompanied by the displacement of the master cylinder, is in this way also suppressed. According to the invention consequently the displacement of the pedal in the direction of the rear end of the vehicle suppressed, thereby making it possible is, substantially maintain all the footwell in front of the driver's seat.

The following is an example of a specific embodiment of the present invention with reference to the accompanying drawings, in which:

<figref idrefs="S16">1</figref> a schematic side view showing the mounting arrangement for an Vehicle master cylinder according to a embodiment of the present invention.

<figref idrefs="S17">2</figref> a Drawing showing the movement of the master cylinder in the case that an external force to the mounting structure for the vehicle master cylinder according to the embodiment the present invention operates.

Detailed description the preferred embodiment

In the following. Embodiments of a An installation arrangement according to the present invention a vehicle master cylinder with respect to the drawings. In the description of the drawings, corresponding reference numerals are assigned to corresponding elements and a repeated description this refrain. In this embodiment, the invention is a mounting arrangement for a master cylinder is applied to a vehicle clutch mechanism.

First, a mounting assembly for one Vehicle master cylinder according to a embodiment of the present invention based on <figref idrefs="S16">1</figref> described. <figref idrefs="S16">1</figref> is a side view, a mounting arrangement for a vehicle master cylinder in accordance with this embodiment shows.

A clutch pedal <figref>1</figref> is a pedal bracket <figref>5</figref> on an operating plate <figref>3</figref> attached. The pedal bracket <figref>5</figref> serves as a fastening element for fastening the clutch pedal <figref>1</figref>, And this pedal bracket <figref>5</figref> Has a front surface portion of the (Not shown) by means of screws to the actuating plate <figref>3</figref> screwed is. Two side face portions<figref>9</figref>. the opposite to each other and extending rearwardly, are provided on the pedal bracket, and the front surface area <figref>7</figref> connected.

A pedal shaft <figref>13</figref>, the over the width of the vehicle to the lower end of a pedal rod <figref>11</figref> extends, is attached to the clutch pedal <figref>1</figref> attached. This clutch pedal<figref>1</figref> is supported in a hole which is formed in a position, which the side surface area <figref>9</figref> corresponds, in a state of about extending the width of the vehicle. The clutch pedal<figref>1</figref> becomes axially around the center of the pedal bar <figref>13</figref> pivoted. A pedal arm<figref>15</figref> to activity a master cylinder <figref>14</figref> is at a specific &lt;?page 4?&gt;position at the lower end of the pedal rod <figref>11</figref> attached. A foot pedal<figref>19</figref>. this by a pedal pad <figref>17</figref> is covered, is also with the lower end of the pedal rod <figref>11</figref> connected.

In this embodiment, an auxiliary mechanism configured so that the on the clutch pedal <figref>1</figref> applied actuation force for the coupling is reduced. This auxiliary mechanism is constructed so that when the clutch pedal <figref>1</figref> is pressed down, the tread force in the second half of Tretvorgangs is reduced when the clutch pedal <figref>1</figref> heavy is it to an auxiliary spring <figref>21</figref> abuts and by the clamping force the auxiliary spring <figref>21</figref> in the second half of the tread force Tretvorgangs supported.

The master cylinder <figref>14</figref> is a pushrod <figref>23</figref> with the pedal arm <figref>15</figref> connected, and the hydrostatic pressure is determined by the driver by the operation of the clutch pedal <figref>1</figref> generated. The master cylinder<figref>14</figref> has a cylinder hole <figref>27</figref> on the elongated within a cylinder body <figref>25</figref> educated is. A piston<figref>29</figref>, At the hermetically sealing elements <figref>31</figref> and <figref>33</figref> are adapted is in the cylinder hole <figref>27</figref> waterproof and movably inserted, and a hydrostatic pressure generating chamber <figref>35</figref> is in the front end of the piston <figref>29</figref> formed (on the right Side of the drawing will be explained in the following).

An inlet opening <figref>27</figref> and a drain opening <figref>39</figref>. with the hydraulic pressure generating chamber <figref>35</figref> in Compound can be brought, are in the cylindrical body <figref>25</figref> educated. The inlet opening <figref>27</figref> is connected to a reservoir (not shown), and is substantially centrally with respect to the longitudinal direction the cylinder body <figref>25</figref> arranged. The drain opening <figref>39</figref> is with an actuating cylinder connected, which is not shown, and at the front end with respect to the longitudinal direction the cylinder body <figref>25</figref> arranged. A Rückkholfeder <figref>41</figref> is between the front end of the piston <figref>29</figref> and a front wall the cylinder hole <figref>27</figref> arranged, and the piston <figref>29</figref> becomes by the elastic force of the return spring <figref>41</figref> after pushed back (In the drawing to the left, this is described below).

The push rod <figref>23</figref> is with a bracket <figref>45</figref> connected, rotatably at the front end of the pedal arm <figref>15</figref> stored is and a connecting rod <figref>43</figref> used and supported so is that it is suitable, with the hinge rod <figref>43</figref> as Pivot to pivot. The front end of the push rod<figref>23</figref> is in the cylinder body <figref>25</figref> introduced and is by a snap ring <figref>47</figref> prevented from slipping out, which on the cylinder body <figref>25</figref> is attached. In this manner, the master cylinder <figref>14</figref> and the push rod <figref>23</figref> mechanically linked together. Also the head region <figref>49</figref> enlarged diameter is at the front End of the push rod <figref>23</figref> provided and in the cylinder body <figref>25</figref> introduced. Of the header <figref>29</figref> enlarged diameter is in Contact with a depression <figref>51</figref>That the rear end of the piston <figref>29</figref> is trained.

The head region <figref>49</figref> enlarged diameter and deepening <figref>51</figref> the piston <figref>29</figref> are correspondingly formed in a round shape, and even when the push rod <figref>23</figref> themselves together with the joint rod <figref>43</figref> as a fulcrum due the operating by stepping on the clutch pedal <figref>1</figref> is pivoted, the contact between the recess <figref>51</figref> and the head portion <figref>49</figref> With enlarged diameter maintained. The master cylinder<figref>14</figref> and the push rod <figref>23</figref>. which are joined together in this manner, are each connected, that the center axis of the piston <figref>29</figref> and the central axis of pushrod <figref>23</figref> substantially on a straight line are, if they are not operated be, that is, when the clutch pedal <figref>1</figref> is not operated.

In a master cylinder <figref>14</figref> With the structure described above moves the push rod <figref>23</figref> after forward while together with the joint rod <figref>43</figref> by a lever arm activity the clutch pedal <figref>1</figref> is pivoted, and the piston <figref>29</figref> emotional inside the cylinder cavity <figref>27</figref> forward. With the advance of the piston <figref>29</figref> is the pressure of the hydrostatic Fluid in the hydrostatic pressure generating chamber <figref>35</figref> gradually gradually increased.

The hydrostatic fluid whose Pressure in the hydrostatic pressure generating chamber <figref>35</figref> is increased, is over the drain opening <figref>39</figref> in a Differential cylinder transferred. If the pedaling of the clutch pedal <figref>1</figref> is terminated, moves The piston <figref>29</figref> by the return spring <figref>41</figref> back. As soon as The piston <figref>29</figref> has reached the turning point, the inlet opening <figref>27</figref> and the hydrostatic pressure generating chamber <figref>35</figref> connected with each other and the hydrostatic fluid flows into the hydrostatic Pressure-generating chamber <figref>35</figref>,

The master cylinder <figref>14</figref> becomes on the side surface regions <figref>9</figref> of the pedal bracket <figref>5</figref> fixed so that it is suitable for a fixed axis that is the width of the vehicle extends to be pivoted. A flange portion<figref>43</figref> to Fastening the master cylinder <figref>14</figref> on the side surface regions <figref>9</figref> of the pedal bracket <figref>5</figref> is on the cylinder body <figref>25</figref> educated. The master cylinder <figref>14</figref> is at a single point of the flange portion <figref>53</figref> at the pedal bracket <figref>5</figref> attached. In this way, it is the Hauptyzlinder <figref>14</figref> made easy to be pivoted, using the master cylinder <figref>14</figref> at a single point of the flange <figref>53</figref> on the side surface area <figref>9</figref> secured becomes.

Also, the flange portion <figref>53</figref> continue back than the inlet opening <figref>37</figref> arranged and the position of attachment of the master cylinder <figref>14</figref> at the pedal bracket <figref>5</figref> is closer to the clutch pedal <figref>1</figref> as the central, longitudinally extending the range of the master cylinder <figref>14</figref>, In this way is the position of the flange <figref>53</figref> further back as the &lt;?page 5?&gt;central, longitudinally extending the range of the master cylinder <figref>14</figref>, which does ______________ mean, that the master cylinder <figref>14</figref> lightweight and easy pivoted can be.

The master cylinder <figref>14</figref> becomes then by fasteners <figref>55</figref>As nuts and bolts, the flange <figref>53</figref> on the side surface regions <figref>9</figref> attached. The fastening elements <figref>55</figref> stilts perpendicular to the side surface regions <figref>9</figref> and extending about the width of the vehicle, wherein the central axis of the fastening elements <figref>55</figref> the form solid shaft about extends the width of the vehicle described above. The fastening force the fastening elements <figref>55</figref> is adjusted so that the master cylinder <figref>14</figref> is not swiveled when a normal Pedaling the clutch pedal <figref>1</figref> is carried out, but is pivoted, when an external force, greater than a specific value is applied to the front of the vehicle.

The master cylinder <figref>14</figref> becomes obliquely with respect to the longitudinal direction the vehicle mounted so that an inactive time when the clutch pedal <figref>1</figref> is not entered, the front of the Part of the vehicle body facing the end of the master cylinder <figref>14</figref> after is addressed below. By the master cylinder obliquely with respect to the longitudinal direction of the is vehicle mounted, the master cylinder can <figref>14</figref> easier and be easily pivoted.

When an external force which is greater than a specific value is applied to the vehicle, which the present embodiment having the mounting structure of a vehicle master cylinder, of the front side of the vehicle starting, the actuation plate <figref>3</figref> and the pedal bracket <figref>5</figref> substantially in the longitudinal direction the vehicle compressed. When an external force greater than the a specific value, to the master cylinder <figref>14</figref> by virtue of the deformation in the longitudinal direction of the operating plate <figref>3</figref> and the pedal bracket <figref>5</figref> exerted due to compression, Then, as shown in by the solid line <figref idrefs="S17">2</figref> As shown, the master cylinder <figref>14</figref> in the Clockwise the drawing with a fixed axis as the center, the about the width of the vehicle extends (the central axis of the fasteners) pivoted. The part of the master cylinder<figref>14</figref>Responsive to the shows front end of the vehicle is shifted to the rear of the vehicle, while the part of the master cylinder <figref>14</figref>, Of the rear end shows the vehicle is moved forward. The dashed line in <figref idrefs="S17">2</figref> shows the state when no external force, as described above, was applied to the vehicle.

On the other hand, have one enlarged diameter having header <figref>49</figref> the push rod <figref>23</figref> and the depression <figref>51</figref> the piston <figref>29</figref> a round shape, which means that even in the case that the master cylinder <figref>14</figref> is pivoted, the mechanical linkage between the push rod <figref>23</figref> and the piston <figref>29</figref> is maintained. For this reason, the push rod <figref>23</figref> counterclockwise in the drawing the hinge shaft <figref>43</figref> pivoted as a lever arm, what with a rotation of the master cylinder <figref>14</figref> accompanied.

With this embodiment, the mounting arrangement for one Vehicle master cylinder can in this way, in the event that an external force, greater than a specific value, to the master cylinder <figref>14</figref> is applied, the displacement of master cylinder <figref>14</figref> and the push rod <figref>23</figref> in longitudinal direction suppresses the vehicle be because the master cylinder <figref>14</figref> and the push rod <figref>23</figref> pivoted will. As a result, the displacement of the pedal<figref>1</figref> after back controlled, thereby making it possible is the major footwell maintain before the driver's seat.

Since the master cylinder <figref>14</figref> at the side surface <figref>9</figref> of the pedal bracket <figref>5</figref> at a single point of the flange portion <figref>53</figref> secured is carried out, when an external force, greater than a specific value is applied, the pivoting of the main cylinder <figref>14</figref> very easy.

The position of the flange <figref>53</figref>. of on the master cylinder <figref>14</figref> is formed, further is closer to the clutch pedal <figref>1</figref> as the central, longitudinally extending the range of the master cylinder <figref>14</figref>, which does ______________ mean, that the master cylinder <figref>14</figref> simple and easy pivoted can be.

Further, the master cylinder is in respect to the longitudinal direction the vehicle angle attached, which means that the master cylinder <figref>14</figref> easier and can be easily pivoted.

The present invention is not to the embodiments described above limited. In these embodiments the present invention has a mounting arrangement for the master cylinder <figref>14</figref> applied, which for a clutch mechanism of a vehicle is used. This but is not in a limiting to understand the meaning and it is also possible, the present invention to a mounting arrangement for the master cylinder, which for the brake assembly of a vehicle is used to apply.