Knife with locking clamp

The invention relates to a knife, in particular installation knife, with a handle of two connectable grips and between the handles held, replaceable blade, the handles in the closed position can be locked by a locking means.

Such a knife, for example, from DE 35 11 091 A1 or from DE 198 19 915 A1. Such knives are as installation knife (Utility knife) both professional and hobbyist widespread. A replaceable blade is held between two grips. Often located under control even a magazine for spare blades.

The handles are a detent in its closed position, in which the Blade is held between the handles, locks. With the knife to DE 35 11 091 A1 is used for this purpose a screw which passes through a handle shell therethrough and screwed in a thread on the other handle shell becomes. This variant is complicates handling. In addition, extending the Screw through the middle of the inside of the handle, so that knife not be realized displaceable blade.

The knife according to DE 198 19 915 A1 for this a locking hook is provided, which is hinged on one handle shell and an eyelet on the inner side the other handle shell engages. In this variant, although the handling simplified. However, the locking hook extends still inside the Handle.

Proceeding from this, the invention based on the problem to a knife provide that for ease of handling and receiving a movable Blade allowed.

To solve this problem the inventive knife is characterized in that the locking means is a clip-type closure, the handle of the exterior surrounds.

The cliplock is thus no longer located in the interior of the handle, but located on the outside of the handle. This makes the inside of the handle remains free for Recording displaceable blades. It provides the strap lock a same easy handling as the variant with the locking hook.

In a first embodiment, the clip closure a closing bracket , which is assigned to one end of a handle shell, and with a Cam engages in a recess on the other grip. These Embodiment is a structurally very simple solution that particularly suitable for knife handles made of plastic. The striker is preferably hinged to a handle shell, in particular by means a film hinge. For easy actuation of the striker may at Striker adjacent to Cam actuation nose be arranged.

The strap lock is for a constructive cheap alternative Embodiment of an actuating bow and an articulated with this associated striker formed. The actuating ring may in turn by a hinge to be mounted on one of the handles. The striker grabs a development of the invention with a locking catch in a recess on the other grip a. The articulation of the actuating bow and the recess for the locking lug are preferably substantially symmetrically to the parting plane located between the handles. This tilting moments on the Grips and consequent misalignment of the handle scales avoided. Of the Strap closure itself should consist of a resilient material, for example, be a spring steel. The handle is tightly closed and the Strap lock does not operate easily.

The blade is preferably slidably mounted between the handle and actuated by an actuation sled. This is per se from the prior known technique. What is new is that the operating slide by spring force is biased perpendicular to the displacement direction against the blade. This is firstly well against guides in the grip the blade. On the other and the actuation sled is always biased against the grip.

According to a development, the blade is in an approximately U-shaped mounted blade bed, which faces away to the of the operating slide Page is open. Through the blade bed is a good guide for the results slidably mounted knife. The blade bed is preferably between Actuation sled and arranged blade. The operating slide itself can be made of a resilient material or a separate spring exhibit.

After a per se also independently conceivable embodiment of the invention is in Handle a blade magazine provided that pivoted on one of the handles is mounted. In this spare blades can be stored advantageously. By the swiveling arrangement can be made of the blade magazine with handle open the associated handles fold up. The spare blades are now easily accessible.

The invention will be illustrated with reference to the drawings in Embodiments explained in more detail. Show it:<dl tsize="6"><dt>Fig. 1</dt><dd>a knife having the features of the invention in a schematic Vertical section,</dd><dt>FIG. 2</dt><dd>the knife of FIG. 1 in a horizontal section,</dd><dt>Fig. 3</dt><dd>a variant of the knife according to FIG. 1 and 2 in vertical section,</dd><dt>Fig. 4</dt><dd>another variant of the knife according to FIG. 1 and 2 in vertical section,</dd><dt>Fig. 5</dt><dd>an actuation sled of the knife according to FIG. 1 and 2 in Side View,</dd><dt>Fig. 6</dt><dd>an actuation sled of the knife according to FIG. 3 in vertical section and </dd><dt>Fig. 7</dt><dd>a further embodiment of a knife with the features of the invention.</dd></dl>

The knife shown in Fig. 1 has a handle 10 composed of two handle shells 11 and 12 on. The handles 11, 12 are in the representation of FIG. 1 vertically approximately centrally separated (split plane 13) and hinged together. To the Handles 11 to keep 12 in its closed position, a strap lock is 14 provided. The strap fastener 14 has a striker 15 and a Actuating bow 16. The operating bar 16 is by a hinge 17 at the Grip 11 is fixed. At its other end, the actuating bow 16 a locking hook 18, which in the closed position as shown FIG. 1 engages in a recess 19 on the handle shell 11.

The striker 15 is by a hinge 20 to the actuator bracket 16 appropriate. The hinge 20 is arranged adjacent to the joint 17 and is at of the hinge 17 side facing away from the parting plane 13. The Striker 15 engages the entire upper half of the handle 10 and instructs its other end a locking nose 21 which engages in a recess 22 at the Grip 12 engages. The locking lug 21 and thus the recess 22 one hand, and the hinge 17 on the other hand are approximately symmetrical to Dividing plane 13 is arranged.

The operating bar 16 and the striker 15 are resilient from a Material, preferably a spring steel.

In the handle 10, a blade 23 is displaceably mounted, which in the plane of division 13 is arranged. The blade 23 may be in a conventional manner by a Slot 24 in the head between the handles 11, 12 of the handle 10 herausund be pushed in again. Serves this purpose an actuating slide 25, the is slidably mounted in a groove 26 on the handle shell 12th On the inside the handle shell 12 are arranged notches 27, in which the actuation sled 25 can be snapped in a form-locking manner known per se.

The operating slide 25 shown in Fig. 5 in detail, comprises a Handle portion 28, a connecting portion 29 and a driving projection 30. at closed handle 10 engages the drive lug 30 in a corresponding Hole on the blade 23 a. This happens due to the arrangement shown automatically upon closure of the handle 10, so that no special Measures to be taken by the user.

The operating slide 25 is again biased against the blade 23rd In the in Figs. 2 and 5 the exemplary embodiment shown, for this purpose the Connecting portion 29 is formed like a bow, and even from a resilient material produced. In the embodiments shown in Fig. 3, 4 and 6 is for this purpose each a separate compression spring 31 is provided.

In the embodiment of FIG. 3 and 6 of the actuation sled is 25 integrally formed. This is from the inside of the handle shell 12 and has lateral locking shoulders 32 which cooperate with the catches 27th In which Embodiment shown in FIG. 4 of the operating slide 25 is in two parts formed, namely, the handle part 28 is screwed to the connecting part 29th

The blade 23 is in an immovably mounted in the handle shell 12 Blades bed 33 out. The blade bed 33 is U-shaped and between the blade 23 and the actuator slide 25. The U-shaped Blades bed 33 is to the side facing away from the actuating slide 25 side the blade 23 open. On the opposite the blade bed 33 side Blade 23 is the blade 23 on to guide webs 34th A long hole (not shown) in the blade bed 33 is supported by the drive lug 30 of the penetrated actuation sled 25 so that the blade 23 against the Blades bed 33 and thus move towards the grips 11, 12 can.

Within the handle 10, namely in the area of ​​the pallet 11, is still a Blade magazine 35 is provided for spare blades 36th The blade magazine 35 is pivotally mounted via a joint 37 to the handle shell 11 and between the arranged guide webs 34th

An alternative embodiment of the blade shown in Fig. 7. The same components are here denoted by the same reference numerals as in Figures 1 to 6. In the case the embodiment of FIG. 7 is a striker of 38 directly via a joint 39 the outer surface of the handle shell 11 hinged. The hinge 39 may at anywhere be hinged to the outer surface of the handle shell eleventh As already in the embodiments according to FIGS. 1 to 6 engages the striker 38 with a locking lug 21 in a recess 22 on the other grip 12 a and closes as the handle 10 to open the striker 38 is a Operating lug 40 disposed adjacent to the locking lug 21 and at which the striker 38 can be detected by the operator manually.

The embodiment of FIG. 7 is particularly suitable for handles 10 made of plastic, would the embodiments according to FIGS. 1 to 6, especially for metal, especially Aluminum handles are 10 suitable. As hinge 39 for the striker 38 in accordance Fig. 7 can advantageously serve a film hinge.

<u>LIST OF REFERENCE NUMBERS</u>

<dl tsize="2" compact="compact"><dt>10</dt><dd>Handle</dd><dt>11</dt><dd>grip</dd><dt>12</dt><dd>grip</dd><dt>13</dt><dd>dividing plane</dd><dt>14</dt><dd>strap closure</dd><dt>15</dt><dd>striker</dd><dt>16</dt><dd>actuating bow</dd><dt>17</dt><dd>joint</dd><dt>18</dt><dd>stop dog</dd><dt>19</dt><dd>recess</dd><dt>20</dt><dd>joint</dd><dt>21</dt><dd>Cam</dd><dt>22</dt><dd>recess</dd><dt>23</dt><dd>blade</dd><dt>24</dt><dd>slot</dd><dt>25</dt><dd>actuation sled</dd><dt>26</dt><dd>groove</dd><dt>27</dt><dd>notch</dd><dt>28</dt><dd>handle part</dd><dt>29</dt><dd>connecting portion</dd><dt>30</dt><dd>driving projection</dd><dt>31</dt><dd>feather</dd><dt>32</dt><dd>locking shoulder</dd><dt>33</dt><dd>blades bed</dd><dt>34</dt><dd>guide web</dd><dt>35</dt><dd>blade magazine</dd><dt>36</dt><dd>reserve blade</dd><dt>37</dt><dd>joint</dd><dt>38</dt><dd>striker</dd><dt>39</dt><dd>Joint (hinge)</dd><dt>40</dt><dd>actuating nose</dd></dl>