KR920000586Y1 - Booster for shifting lever - Google Patents

Abstract

No content.

Description

Power booster for transmission operation

Figure 1 (a) and (b) shows an embodiment of the present invention,

1 (a) is a longitudinal sectional side view of the operation force extracting part of the transmission power booster;

FIG. 1B is a cross-sectional view taken along the line B-B in FIG. 1A.

2 to 4 show a conventional power transmission device for operating the transmission,

2 is a longitudinal sectional front view of the transmission power control device,

3 is a cross-sectional view taken along the line III-III in FIG. 2, and FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG.

* Explanation of symbols for the roughness part of the drawing

1: cylinder body 2: piston rod

3: transmission operating lever 4: operating rod

23: bolt 23a: tofu

23d: bottom surface 25: striker

25a: Lower 25b: Inside

29, 30: hole 25c, 30a: inner side

32,34: Supporting part for ball 32a, 34a: Corner part

28: ball 33: ball support member

33c: recess for spring storage ℓ: gap

The present invention relates to an improvement of a transmission operation power supply device that backs up the operating force by a fluid pressure such as air when operating a transmission of an automobile or the like of the present invention.

In operation of the transmission, the selector operation can be operated with a light force, but since the shift operation requires a relatively strong force, a large transmission is used for a transmission operation power supply, in particular for boosting the shift operation force.

2 to 4 of the accompanying drawings shows a conventional transmission operation control device. Briefly described with respect to the conventional apparatus shown in the drawing, 1 is the cylinder body, and the hollow firston rod 2 is inserted in the cylinder body 1 so as to be slidable. This first permanent rod 2 is connected to a transmission lever (not shown) on the transmission side, and is configured to transmit the boosted shift force to the transmission lever. The operation rod 4 connected to the transmission operation lever 3 on the driver's side is slidably fitted in the first rod 2, and a pipe 6 having one end sealed at the distal end of the operation rod 4. Is connected with the connector 5 interposed therebetween, and the other end of the pipe 6 is fixed by the retaining ring 7. In the middle part of the pipe 6, a hole 8 is drilled, and two moving members 9 and 10 are arranged at the upper left of the hole 8 so as to be slid. The rebound spring 11 is fitted. On the outside of the moving members 9 and 10, fixing members 12, 13 and valve lifters 14, 15 for these two moving members are arranged.

That is, the both fixing members 12 and 13 are integrally formed on the first rod 2 and the valve lifters 14 and 15 are arranged to slide in the first rod 2. At the same time, the rebound springs 16 and 17 are interposed between the valve lifters 14 and 15 and the fixing members 12 and 13, respectively. In addition, the piston rod 2 has holes 20 and 21 communicating with the piston left and right chambers 18 and 19 between the fixing members 12 and 13 and the valve lifters 14 and 15. ) Are drilled and installed respectively. Moreover, the bolt 23 is penetrated to the said operation rod 4 orthogonally to the axis center, and the collar 22 is attached to the upper part of the bolt 23. As shown in FIG. The lower end of the collar 22 is integrally fitted to the operation rod 4 and the operation lever 3 is connected to the upper end thereof. A nut 24 is attached to the lower end of the bolt 23, whereby the bolt 23, the nut 24, the collar 22, the operation rod 4, and the operation lever 3 are integrally formed.

And the collar 22 and the nut 24 are orthogonal to the axial direction of the operation rod 4 in the upper and lower parts of the piston rod 2, and the cross section is loose in the holes 29 and 37 formed long in the axial direction. (See Fig. 4). In addition, the striker 25 is fixedly installed on the outer circumference of the permanent rod 2, and the plug 26 is fitted into the lower portion (cylindrical portion) 25a of the striker 25, and the compression provided in the plug 26 is compressed. The ball 28 is held in contact with the contact surface 24a formed on the nut 24 by the spring 27. Thereby, the operation force take-out part C is comprised.

The device works as follows.

First, when the driver shifts the engine lever (Dosian lock), the accompanying shift force is transmitted to the operating lever 3 connected to the engine lever, so that the lever 3 is right or as shown in FIG. Move to the left direction. Since the force principle at this time is the same in the right direction and the left direction, only the case where the operation lever 3 moves in the right direction (arrow B direction) will be described.

When the operation lever 3 moves to the right direction, the collar 22, the bolt 23, and the nut 24 are integrally moved by the operation lever 3 to move to the right direction, and are tightly fitted with the bolt 23. The operating rod 4 which is engaged slides in the piston rod 2 and moves to the right. At this time, the first rod, the striker 25, the plug 26 and the ball 28 do not move, and only the bolt 23, the nut 24 and the operating rod 4 move to the right. The nut 24 rides on the ball 28. Then, together with the operating rod 4, the pipe 6 moves in the right direction and the valve lifter 14 is moved by the retaining ring 7, and thus the moving member 9 moves in the right direction. A gap occurs between the member 9 and the stationary member 12. Then, in FIG. 2, after the compressed air passes through the hole 8 in the pipe 6 in the direction of arrow A and passes the gap between the fixing member 12 and the moving member 5, again the piston rod The piston rod 2 moves in the right direction by passing through the hole 20 of the piston and entering the left chamber 18 of the piston, pushing the piston portion 2a of the piston rod to the right. The striker 25 moves with the piston rod 2 in the right direction. In this state, that is, the compressed air continues to act on the piston portion 2a in a state where a relative displacement occurs between the operating rod 4 and the piston rod 2, so that the shifted force exerted by the booster is connected to the striker 25. Is transmitted to the transmission lever of the transmission is shifted gears. When the force applied to the shifted operation lever 3 is interposed, reaction force caused by the air pressure acting on the valve lifter 14, the compression spring 27 and the reaction spring 16 are returned to their original state, and the spring 27 The ball 28 is returned to its original position by the force of the force, and the compressed air is discharged. The conventional gearbox for the conventional transmission configured as described above has a bolt 23. Since the structure is rotatable around the intersection point 0 (refer to FIG. 3) of the axial center of the shaft and the side of the operating rod 4, the bolt 23 is arranged in the direction of the arrow B in the holes 29 and 30, or When reciprocating in the opposite direction, the circumferential surface of the nut 24 is formed on the inner surface 30a and the inner surface 25c of the striker 25 formed along the inner axial direction of the hole 30 of the piston rod 2. The abutment occurs and friction occurs between them. When such friction occurs, a large operation force is required for the shift operation of the transmission, thereby degrading operability.

In order to eliminate this coupling, a spring having a large spring constant may be used, but in this case, the operability is extremely bad because it requires a larger operating force. Therefore, it is presently not possible to select such a configuration.

The present invention was devised in consideration of the above-described situation, and as described above, the bolt rotation about point 0 is reliably regulated to prevent the bolt from friction between the piston rod and the striker when the bolt reciprocates. The purpose of this is to reinforce the operation control gear of the transmission with good operability. In order to solve the above problems, the present invention is connected to a cylinder-body, a transmission lever and a hollow piston rod inserted into the cylinder body to enable sliding movement, and connected to a transmission operating lever and sliding in the piston rod. A control rod inserted to enable movement, and a manipulation force extracting portion mounted to a portion of the manipulation rod, to transmit a manipulation force of an engine lever to the manipulation rod through the manipulation lever and to transfer the manipulation rod in the axial direction within the piston rod. In the transmission operation power supply apparatus for moving the hydraulic pressure to the piston rod by this movement and the shift operation force which is separated by the movement of the piston rod according to the movement of the operation rod obtained through the operation force take-out unit, The manipulation force taking out portion is orthogonal to the axial direction of the manipulation rod. A bolt having a pair of holes loosely coupled so as to penetrate through the rod and having a ball supporting recess at one end thereof, the bolt being loosely coupled to move in the axial direction of the operating rod, a striker fixed to an outer side of the piston rod, A ball support member fitted in the striker so as to be slidable and having a ball support recess formed at one end thereof, a ball arranged to fit in a space formed by the recess of the bolt and the recess of the support member, and the ball support member. The bolt is composed of a spring support means for pushing toward the bolt, the one end surface of the bolt and the one end surface of the bolt support member close to each other, and the bolt centered around the point where the axis of the piston rod and the axis of the bolt cross each other Rotation of the bolt and the ball support member each of the recess and the ball firmly contact each other It is presented to restrict by.

EXAMPLES Hereinafter, an embodiment of the present invention will be described with reference to FIG. 1. In the case of FIG. 1, parts common to those of FIGS. 2 to 4 are denoted by the same reference numerals, and description thereof is omitted.

FIG. 1 (a) is a longitudinal cross-sectional side view showing an embodiment of the operation force extracting unit C of the device according to the present invention, which corresponds to FIG. As shown in Fig. 1 (a), in this embodiment, the bolt 23 penetrates up and down perpendicularly to the operation rod 4 and its head 23a is firmly fixed to the operation rod 4. And a transmission operation lever (Dosian chi) is connected to the operation rod 4, and the operation force of an engine lever (Dosian chi) is transmitted to the operation rod 4 via the said operation rare.

The head 23a of the bolt 23 has an elliptical cross section, as shown in FIG. 1 (b), and is composed of a confrontation part 23b and a small diameter part 23c. The lower end 23d of the head 23a is provided with a ball supporting recess 32 along the axial direction of the operation rod 4. The large diameter portion 23b is fitted to move freely in the circular hole 30 of the piston rod 2 and has a narrow gap between the circumferential surface and the inner surface 30a of the hole 30. Is formed. The small diameter portion 23c is disposed in the lower portion (cylindrical portion) 25a of the striker 25, and the distance between the circumferential surface and the inner surface 25c of the striker 25 is formed wider than the interval.

In the lower portion 25a of the striker 25, a ball 28, a ball support member 33 and a compression spring 27 are arranged. That is, the ball supporting member 33 which has the ball supporting recessed part 34 in the upper end surface 33c, and the spring receiving recessed part 33c in the lower end surface 33b contacts in the lower part 25a of the striker 25. As shown in FIG. The ball 28 is disposed in the space formed by the recessed portion 32 of the bolt 23 and the recessed portion 34 of the ball support member 33. The ball 28 is formed by a compression spring 27 disposed between the support plate 35 provided on the lower portion 25a of the striker 25 and the bottom surface of the recess 33c of the ball support member 33. A constant force is applied to the bolt 23 by the ball support member 33. As a result, as shown in FIG. 1 (a), the pair of corner portions 32a of the recess portion 32 and the pair of corner portions 34a of the recess portion 34 come into contact with the ball 28 and at the same time, The ball 28 is in strong contact with the bottom surfaces 32b and 34b of the. Therefore, the bolt 23 and the ball support member 33 are disposed close to each other with the ball 28 interposed therebetween, and between the bottom surface 23d of the bolt 23 and the top surface 33a of the ball support member 33. In this, an extremely narrow gap 1 is formed.

In this embodiment, after the switching operation of the shift lever is completed, the bolt 23 is automatically returned to the center positions of the holes 29 and 30 by means not shown. In the operation force take-out part of this structure, by arranging the ball 28 in the bolt 23 and the ball supporting member 33, the corner portions 32a, 34a and the balls of these recesses 32, 34 are formed. Since the 28 is brought into contact with each other, even when the bolt 23 tries to rotate about the point 0 together with the operation rod 4 when the bolt 23 reciprocates in the axial direction of the piston rod, the ball Since the 28 and the edge portions 32a and 34a are firmly in contact with each other, the rotation of the bolt 23 is prevented.

That is, when the bolt 23 tries to rotate clockwise around positive zero in FIG. 1A, the right edge 32a of the recess 32 and the left edge 34a of the recess 34 are formed. The ball 28 is firmly supported between the bolts 28 so that the bolt 23 and the ball supporting member 33 are firmly connected to each other with the ball 28 interposed therebetween. At this time, since the bolt 23 and the unsupported member 33 are disposed in close proximity to each other, a force toward the lower portion 25a of the striker 25 is mainly applied to the ball supporting member 33 to the compression spring 27. The opposing component is extremely small.

Thus, the rotation of the bolt 23 is saved by the combination of the fire 28, the ball support member 33, and the striker 27, so that the head 23a of the bolt 23 is formed in the hole of the piston rod 2 ( Its rotation is previously prevented in contact with the inner surface 30a of 30 and the inner surface 25c of the striker 25. In this case, friction occurs with the inner surfaces 30a and 25c due to an unpredictable rotation about the point 0 of the bolt 23 during the reciprocating motion of the bolt 23 due to the shifting of the shift lever. There is no possibility at all, and therefore the switching operation can be performed with light operation force. Further, there is no need to use a special member as compared with the conventional one, so that there is no cost increase.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications and changes are possible based on the technical idea of the present invention.

For example, the outer circumferential shape of the head 23a of the bolt 23, the shapes of the ball supporting recesses 32, 34, and the like can be variously changed. It is also possible to connect the transmission lever to the bolt 23. Instead of the crude compression spring 27, an elastic member such as rubber may be used.

The present invention as described above is to regulate the rotation of the bolt by arranging the ball in the recess formed in each of the bolt and the ball support bonsai so that the recess and the ball firmly contact, the bolt and piston due to the rotation of the bolt There is no risk of friction between other members such as rods and strikers, and the reciprocating motion of the bolts, and also the switching operation of the transmission, can be carried out with light operation force, and the operability can be drastically improved. . Moreover, since the same structural member as the conventional one may be used, the cost of the apparatus is not increased.

Claims (1)

A hollow piston rod connected to the cylinder body, the transmission lever and slidably inserted into the cylinder body, an operation rod connected to the operation lever of the transmission and slidably inserted into the piston rod, and the operation rod. Consists of an operating force extracting part mounted to a part, transmits the operating force of the engine lever to the operating rod through the operating lever to move the operating rod in the axial direction within the piston rod and the fluid pressure by the movement In a transmission operating power transmission device which obtains the transmission operating force boosted by the movement of right through the operation force takeout part, the operation force takeout part is disposed through the operation rod perpendicularly to the axial direction of the operation rod, and is for ball support on one end surface. A bolt having a recessed portion and the bolt moving in an axial direction of the operation rod The piston rod having a pair of loosely fitted holes, a striker fixed to the outside of the piston rod, and one end fitted to allow sliding movement in the striker and disposed close to one end surface of the bolt 28. A ball support member having a ball support recess formed on a surface thereof is disposed in a space formed by a recess of the bolt and a recess of the ball support member, and is firmly contacted with each recess of the bolt and the ball support member so that the piston rod And a spring supporting means for pushing the ball support member toward the bolt and a ball preventing rotation of the bolt about the point where the shaft center of the bolt and the shaft center of the bolt cross each other.