Untitled record

[Brief Description of the Drawings]

Drawing 1 is a partial abbreviation longitudinal section (vertical section meets - line of Drawing 5 mostly.) of one example of this device, Drawings 2, 3, and 4 are perspective views which illustrated the three principal parts which decomposed the example, respectively, It is a sectional view to which the perspective view and Drawing 8 in which Drawing 5 shows the transverse cross section (the cross section of a figure up-and-down half part meets - line of Drawing 6 mostly.) of the example, Drawing 6 shows some longitudinal sections of the example, and Drawing 7 shows the important section of example 1 member meet the exploded perspective view of an example part, and Drawing 9 meets - line of Drawing 1 mostly. 10 ...... A missions case, 11, 12 ...... A transmission axis, 13, 14 ...... A bearing frame board, 13a, 14a ...... A supporting part, 15, 16 ...... A case half part, 15b, 16b ...... A cylinder part, 15c, 16c ...... A supporting part, 17 ...... A bolt, 18 ...... Nut, 21, 22 [ ...... A bearing sleeve, 39, 40 ] [ ...... A barrel 42 ] [ ...... A guide cylinder (positioning member) 44, 45 ] [ ...... Cylinder part inner skin (crevice for positioning). ]

[Detailed explanation of the device]

The device of industrial use Field provides transmission provided with a lightweight and cheap missions case about the transmission used for maintenance vehicles, such as a walked type lawn mower of a self-propelled formula, and More tractor. In the transmission for maintenance vehicles provided with two or more transmission axes which are parallel to Mutually in the conventional technical missions case, The art of dividing a missions case into two by the part crack surface containing the axis of two or more transmission axis, and carrying out support-from-under bearing of the transmission axis by the mating face of both case half parts is publicly known as indicated by United States patent Na 4103 and 566, for example. After transmission provided with this missions case builds into one case half part the transmission axis which carried transmission members, such as a gear, the case half part of another side is united, and since it is assembled with both case half part 1 bundle by fixing, it is easy to assemble. When Aim and others is going to manufacture a missions case for the weight saving and cost reduction of a problem missions case which a device tends to solve from a synthetic resin, glass fiber, and that light-weight material, When the missions case was divided in the bearing portion of the transmission axis, axial support surely became unstable, and it has been thought that it is necessary to adopt the case shape provided with a circular O axis bearing hole in one. on the other hand -- while this device can perform axial support stably also as what comprises a missions Case light-weight material -- a bearing portion -- case division -- all -- supposing that it is possible It is going to provide the transmission for maintenance vehicles provided with the missions case to which it is supposed that the ease of an assembly is further raised rather than 00 sorts of conventional missions cases. In two or more transmission axes 11 which are parallel to Mutually in missions case 10, and the transmission for maintenance vehicles which it 12'i Has, this device provided the following technical means to eye others [ technical means and ] for problem all solving so that it might illustrate to an attachment figure. That is, one pair of bearing frame boards 13*14 made from sheet metal which the shape made equivalent to the section shape of missions case 10 piled up two or more above-mentioned transmission axes, and were welded by Mutually are made to carry out support-from-under bearing. The bearing frame board was pinched by - of a missions case, and other case half parts 15.16, and these bearing frame board and both case half parts were fixed with the bundle. Both wheels receiving frame board 13.14 is made to carry out support-from-under bearing of the transmission axes 11 and 12 which carried transmission members, such as a gear, as shown in Drawing 2. It incorporates in case half part 16 of the illustration of this pre-assembly object to Drawing 4, and case half part 151 of the illustration in Drawing 3 to the next is brought on bearing frame board 13, for example, transmission will be assembled if it carries out [ Collinear ] with [ like Nut 16 of the illustration to bolt 17 and the 8g4 figure of the illustration to Drawing 3 ] a bundle with an ingredient. An example illustration example is Engagement to the example which carried out this device as transmission for the walked type lawn mowers of a self-propelled formula, Missions case 1*0 is made for there to be along transmission axis 11 and 121181&'4 transverse direction, and is established, case half part 15 is located and case half part 16 is located below up among case half parts 15*16, respectively. transmission axis 12 is used as a drive wheel axis, and right and left are made to project and it comes out of it to them. Case half parts 15 and 16 are the synthetic resins (glass fiber strengthening resin is also included.) of nylon 6 grade. Or it is considered as the thing made from glass fiber replaced with it. Cylinder part 15a which supports movably perpendicular input axis 20 which makes cut within and without missions case 10 again, and it provides in it, and cylinder part 15b of one Conversion are formed in the top wall of case half part 15. On the inner bottom of case half part 16, it is the above-mentioned cylinder part 15b. cylinder part 16b Into which carries out an opposed position is formed in the shape of projection, and it comes out. semicircle-like supporting part 13a in which bearing sleeves 21 and 22 fit into the bearing part of each transmission axis 11*12 as shown in Drawings 1st [ the ], 2, and 5, and each bearing frame board 13 and 14 supports from under addressing to a half of bearing sleeve 21*22 -- 14aft formation is carried out. In Drawing 2, W shows the welding part of both-bearings frame boards 13 and 14. Input axis 20 is supported movably by the above-mentioned cylinder part 15a of case half part 15 via bearing sleeve 23.24 of two-fold inside and outside, as shown in Drawing 1st [ the ] and 3. supporting part 15c of the shape of a semicircle which supporting parts 13a and 14a of each bearing frame board 13*14 support from under to each case half part 15.16 as shown in Drawing 3.4 -- 16ci formation is carried out and it comes out. as shown in Drawing 4 [ two to ], the hole of the suitable number for band insertion is established in bearing frame board 13.14 and case half part 15.16, and it appears in them. Small bevel gear 26 is really formed in the inner end of input axis 20, and as shown in Drawing 2.5, on transmission axis 11, fixed installation was carried out, and this small bevel gear 26 started, and meshes with a certain large umbrella gear 27. On transmission axis 11, it is five gears 28F+ and 28F. Fixed installation of 28F3.28F and 28F is carried out, and they are five gears 29F and 29F on Ah and transmission axis 12. Loosely-fitting installation of 29F and 29F4.29F is carried out, and corresponding things with -29Fl have geared with gear 28F, and -28F5 and gear 29F to Mutually. It is attachment by screw bolt 31 which screwed the interval on transmission axis 12 through three Ha ha and arc part 30a by the 30t of rail member-peripheral direction made from sheet metal which has arc part 30a and one pair of rail sections 30b which meet the peripheral face in the peripheral face of transmission axis 12 as shown in Drawing 6.7. It describes above, and rail section 30b of one pair of fc is formed so that may make approximately U type from the both ends of arc part 30a, it may project outward [ of transmission axis 12 radial direction ], it may project by transmission axis 12 peripheral direction and the opposed position of the end may be carried out. although chic sleeve 32 is provided slidably and it comes out on transmission axis 12 -- the above-mentioned gear 29F on transmission axis 12, -29F, and the Schiff -- TASS -- Reeve 32 makes the above-mentioned rail member 30 support movably, and comes out. It is although the long groove shown in Drawing 5 with numerals 33 among three rail members 30 serves as a relation formed on transmission axis 12, thus -- the inside of long groove 33 formed between rail members 30 -- a end face -- Schiff -- TASS -- making Reeve 32 pinch -- Schiff -- TASS -- Reeve 32 is made to support impossible [ relative sliding ], it appears in him, and a certain Shift key 34 is prepared for him. Clutch projection 34a has Shift key 34 at a tip, and move energization is carried out in the direction out of which attaches to the end face of the Shift key 34, and is made to act from the long groove 33 inner-bottom side, and it comes and which clutch projection 34a projects outside long groove 33 with a certain board spring 35. As attached and shown in gear 29F in Drawing 6 at the inside of each gear 29F and -29F,, they are 36t of slots addressed to three piece. - It forms and let Ale and clutch projection 34a of Shift key 34 be the things of the function which rushes into the slot 36 and combines each gear 29F and -29F to transmission axis 12. be above alike -- the well-known key shift type gearbox comprises an United States patent N14,103,566 grade which As(ed) in itself Schiff -- TASS -- carrying out shifting operation of Reeve 32, and carrying out slide displacement in 34t of Shift key-long groove 33 -- clutch projection 34a -- gear 29F and -29F -- joining together to transmission axis 12 in 'ji-Selection - transmission axis 12 -- five steps -- gear change rotation To murk. In order to carry out shifting operation of the chic sleeve 32, as shown in Drawing 1, engaging of clutch is carried out to the sleeve 32, and it comes out, and a certain shifter fork 38 makes it meet in the perpendicular direction, and is formed in missions case 10. This shifter fork 38 is made into the thing made from sheet metal as taken out and shown in WIJ8 figure, it extrapolates barrel 39.40 which has correspondence section-shaped holes 39a and 40a to both ends, and is having the support which can be rotated in the barrel 39.40 portion performed. Barrel 39 by the side of the upper part is protruded and formed in one from arm 41 for carrying out shifter fork 38vi-rotation operation, as shown in Drawing 1. 1 guide cylinder 42 which forms an incision My best friend cylindrical shape for a part to bearing frame board 13.14 as shown in Drawing 1st [ the ] and 2, Make this guide cylinder 42 that makes project over each case half part 15.16 inboard, and it has welded and fixed support movably up-and-down barrel 39*40, as shown in il and 9 figure, shifter fork 38j rotation displacement is made to guide, and it is To be part. it fits in and comes out of guide cylinder 42 to the above-mentioned cylinder parts 15b and 16b of each case half part 15.16. Therefore, at the time of each case half part 15.16 i go Slide, if guide cylinder 42 is fitted into each cylinder part 15b and 16b, each case half part 15.16 will be correctly positioned by bearing frame board 13.14 to bearing frame board 13.14. Fix to bearing frame boards 13 and 14, and it is made to project over each case half part inboard, and comes out, and a certain positioning member is constituted, and One tB guide cylinder 42 is cylinder part 15b. It was provided in the inside of each case half part 15.16, and the inner skin 44.45 of 16b is crevice all provided for positioning so that the positioning member 42 may fit in. It has semicircle-like slot 41a which stops pin 46 inserted in hole 38a of the projection part to the exterior of shifter fork 38, rotation operation is carried out with the gearshift outside a figure, and the above-mentioned arm 41 carries out rotation displacement of the shifter fork 38 like necessary, as shown in Drawing 1st [ the ] and 3. One pair of bearing frame boards 13.14 made from sheet metal which piled up two or more transmission axes 11 and 12 of parallel arrangement, and were welded by Mutually are made to carry out support-from-under bearing of the device of Effect of a device. Since the bearing frame board 13.14 was pinched by two case half parts 15.16 and Collinear meal Temission case 10 was formed, it is also considering case half part 15.16 as a thing of lightweight and cheap synthetic resin - or the product made from glass fiber, carrying out by stabilizing axial support with bearing frame board 13.14 made from sheet metal, and not making the problem of axial support start -- a friend -- making axial support stable, from a lightweight and cheap material, and suppose that it can do with a thing. [ both case half parts 15 and 16 ] moreover -- since it is incorporable in case half part 16 or 15 at once after changing into a final assembly state two or more transmission axes 11 and 12 which carried the transmission member by using bearing frame board 13.14 of two sheets as a support member in an assembly of transmission -- all the assembly Extremely of transformer Tsushin -- suppose that it is easy.