JPS6339776Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Purpose of the invention (1) Industrial application field The present invention is a gear shift operation device for a transmission used in a vehicle, that is, the swinging of a gear shift lever in the first operating direction is controlled by a first arm. of the gear shift lever in a second operating direction orthogonal to the first operating direction is transmitted to the second operating wire via the second arm. Regarding improvements.

(2) Prior Art Conventionally, as this type of device, a spherical fulcrum part integral with the gear shift lever is supported on a spherical catch of the base, and a first shaft protrudes from the spherical fulcrum part in a direction perpendicular to the axial direction of the gear shift lever. A first operating wire is connected to the arm, a second operating wire is connected to a second arm that projects from a spherical fulcrum in a direction perpendicular to the first arm, and the intermediate portion of the first arm is erected on a base. A device is known in which the swinging motion of the first arm in the first operating direction is guided by engaging with a long groove of a provided guide plate.

(3) Problems to be solved by the invention In the above device, the torsional torque acting on the gear shift lever during gear shifting operation is supported by the spherical fulcrum and the guide plate. Therefore, the span between the center of the spherical fulcrum and the guide plate becomes the span for supporting the torsional torque, but the span between the center of the spherical fulcrum and the tip of the first arm is set based on the relationship of the lever ratio. Therefore, there is a problem that this restricts the torsional torque bearing span.

Furthermore, if the first arm is provided protruding from the spherical fulcrum as described above, the first arm must pass through the spherical seat on the base side, which complicates the structure. Since these combinations must be performed when assembling the device, the number of assembly steps is large, and in addition, a guide plate is required, which is uneconomical.

In view of the above, the present invention is designed to freely set the span for supporting the torsional torque acting on the gear shift lever during gear shift operation without being restricted by the span between the center of the spherical fulcrum and the tip of the first arm. It is an object of the present invention to provide the above-mentioned speed change operation device which is simplified and has improved ease of assembly.

B. Structure of the invention (1) Means for solving the problem The invention consists of a metal hollow support shaft that has a spherical fulcrum in the middle and is fixed to the base by inserting a mounting bolt; a housing body having a housing hole into which the spherical seat is fitted, the speed change lever, the first arm, and the second arm; a housing body that extends through both ends of the support shaft; , having a long hole that allows the shift lever to swing in the first and second operating directions but prevents rotation of the shift lever about the axis, and is fixed to both end surfaces of the housing body to prevent the housing from moving. The present invention is characterized in that it is comprised of: an end wall member; and synthetic resin bushings that are respectively fitted to both ends of the support shaft so as to be in surface contact with both inner surfaces on the longitudinal sides of the elongated hole.

(2) Function As described above, when the support shaft is inserted through the long hole in the housing, the long hole and the support shaft work together to support the torsional torque acting on the shift lever during gear shifting. Furthermore, the span for supporting the torsional torque is regulated by the length of the support shaft of the housing, and is not affected in any way by the span between the spherical fulcrum and the tip of the first arm.

Furthermore, when the first and second arms are provided in the housing, these arms are located in areas that do not interfere with the spherical catch and the spherical fulcrum at all,
The structure is therefore simplified.

Furthermore, since the spherical fulcrum part and the spherical catch are housed in the housing in a combined state,
There is no need to combine them when assembling the device,
By simply inserting a mounting bolt into the support shaft, the housing can be attached to the base and the gear shift lever, first arm, and second arm can be arranged at appropriate positions.

Further, since the swinging of the gear shift lever in the first or second operating direction is permitted by the sliding of the inner surface of the elongated hole of the housing against the outer surface of the synthetic resin bushing, the movement of the housing and therefore of the gear shift lever is allowed. is performed smoothly. On the other hand, the swinging of the gearshift lever in the second or first operation direction is allowed because the bushing slides and rotates around its axis on the support shaft due to the swinging of the housing. The lever moves smoothly.

Furthermore, since a guide plate for the first or second arm is not required, it is economical.

(3) Embodiment The illustrated example is a speed change operation device applied to a transmission of an automobile with five forward speeds and one reverse speed. In Fig. 2, Fr indicates the front of the vehicle, Ri indicates the right side of the vehicle, and Le indicates the left side of the vehicle. In Figs. 1 to 4, the base 1 is a base body 5 and a tower 6 fixed to the upper surface of the base body 5 by welding or the like. The base body 5 is detachably attached to the floor plate 2 of the vehicle body with bolts 3 and nuts 4.

Between a pair of side plates 7 ₁ and 7 ₂ of the tower 6 located in the longitudinal direction of the vehicle, a hollow metal support shaft 9 having a synthetic resin spherical fulcrum portion 8 in the intermediate portion is provided between the support shaft 9 and both side plates 7 _{1 .} , 7 ₂ via mounting bolts 10 passing through them. 11 is mounting bolt 1
This is a locking nut screwed onto the 0.

A housing 13 having a gear shift lever 12 projecting from its upper surface is supported on the support shaft 9 . The housing 1
3 has a spherical seat 14 that fits into the spherical fulcrum portion 8, and a pair of elongated holes 15 located on both sides of the spherical seat 14 to allow the support shaft 9 to pass through. Both elongated holes 15 are formed to be elongated in the axial direction of the speed change lever 12, and hence in the vertical direction, and a synthetic resin bushing 16 is interposed between the elongated holes 15 and the support shaft 9.
Each bush 16 has a circular through hole 1 that fits into the support shaft 9.
It has a rectangular outer shape so that it can come into surface contact with both inner surfaces of the longitudinal sides of the elongated hole 15 and the elongated hole 6a.

With the above configuration, the housing 13, and therefore the gear shift lever 12, can swing around the axis XX of the support shaft 9 in order to swing in the select direction as the first operating direction, and can swing around the axis XX of the support shaft 9 as the second operating direction. perpendicular to the axis X-X to swing in the shift direction of
Moreover, it can swing around the axis YY passing through the center of the spherical fulcrum part 8.

The speed change lever 12 is prevented from rotating around its axis by the cooperation of the long holes 15 and the support shaft 9.

A select arm 17 as a first arm is protruded from the outer surface of the housing 13 with its axis aligned with the axis Y-Y.
A shift arm 18 as a second arm is protruded from the lower surface of the switch 3 in a relationship perpendicular to the select arm 17 .

A support shaft 19 is provided on the side plate 7 ₃ of the tower 6 on the side from which the select arm 17 projects, and is provided with a support shaft ₁₉ projecting in parallel with the selection arm ₁₇ . A boss portion 22 located at the bent portion is rotatably supported.

A U-shaped portion 23 that opens toward the front of the vehicle is formed at the front end of the horizontal arm 21 ₁ of the bell crank 20, and the spherical tip 24 of the select arm 17 fits into the U-shaped portion 23. child 25
It is slidably fitted through the . The spherical tip 24 of the select arm 17 is rotatable relative to the slider 25 and therefore relative to the horizontal arm 21 ₁ .

At the lower end of the vertical arm 21 ₂ of the bell crank 20 is a selection wire as a first operation wire.
Rod with turnbuckle 38 at the starting end of W ₁
Connected via R ₁ and its select wire W ₁
The terminal end is connected to a select lever of a transmission (not shown).

The starting end of a shift wire W ₂ as a second operation wire is connected to the lower end of the shift arm 18 via a rod R ₂ equipped with a turnbuckle 39, and the terminal end of the shift wire W ₂ is connected to a shifter of a transmission (not shown). connected to the lever.

As shown in FIG. 4, a locking portion 26 is provided protruding from the spherical tip portion 24 of the select arm 17.
and the vertical arm 21 ₂ in the bell crank 20
A return spring 28 of the bell crank 20 is diagonally stretched between the locking portions 27 protruding from the lower part. As a result, the horizontal component of the tensile force f in the return spring 28
f ₁ is connected to the housing 13 via the select arm 17
As a result, the inner surface of each elongated hole 15 is pressed against the outer surface of the bushing 16, thereby preventing rattling between the housing 13 and the bushing 16. Further, since the select arm 17 is pressed against the U-shaped portion 23 of the bell crank 20 via the slider 25 by the vertical component f ₂ of the tensile force f, rattling between the select arm 17 and the U-shaped portion 23 is prevented. be done.

FIG. 2A shows the shift pattern of the shift lever 12, where Se is the select direction, Sh is the shift direction, N is the neutral position, 1st gear position, 2nd gear position, and 3rd gear.
The speed position is the 4th speed position, the 5th speed position is the 5th speed position, and R is the reverse position.

Next, the operation of this embodiment will be explained. Normally, the shift lever 12 is held at the neutral position N, that is, the -select position.

If the shift lever 12 is now shifted to the 3rd speed position, the shift lever 12 will move through the elongated hole 1 of the housing 13.
5 is slid against the bushing 16 and swung counterclockwise in FIG. ₁ around the axis Y-Y in FIG. A third gear train is established.
When a torsional torque is applied to the gear shift lever 12 during this shift operation, the torsional torque is applied to the housing 13.
The shift lever 12 is supported by the support shaft 9 through the elongated hole 15, so that the shift lever 12 will not be twisted.

Further, the select arm 17 rotates in the same direction as the housing 13, but since the axis of the select arm 17 and the axis Y-Y, which is the center line of swinging of the housing 13 in the shift direction, match, the spherical tip of the select arm 17 The portion 24 only slides and rotates within the slider 25, so the rocking force of the gear shift lever 12 is not transmitted to the bell crank 20.

On the other hand, if the shift lever 12 is shifted to the 4th speed position in the opposite manner to the above, a 4th speed gear train is established in the transmission.

Next, to establish the 5th gear or the reverse gear, first move the shift lever 12 from the neutral position N to the V-R select position, and then the shift lever 12 moves around the axis XX in FIG. 2 as shown in FIG. Since the select arm 17 swings clockwise, the housing 13
At the same time, it swings as shown by the chain line in FIG. As a result, the bell crank 20 swings clockwise around the support shaft 19 in FIG. 4, and a tensile force is applied to the selection wire _W2 , completing the VR selection operation in the transmission. Therefore, by shifting the shift lever 12 to the 5th speed position or the reverse position R, the 5th speed or reverse gear train is established in the transmission.

In the above select operation, select arm 1
Since the spherical tip 24 of No. 7 slides toward the open end of the U-shaped portion 23 of the bell crank 20 and moves away from the locking portion 27 of the vertical arm 21 ₂ of the bell crank 20, the return spring 28 is extended. The restoring force of the return spring 28 acts as a restoring force for the bell crank 20 and, therefore, for the speed change lever 12.

Next, the assembly structure of the support shaft 9, the housing 13, and the spherical seat 14 will be described with reference to FIGS. 2, 5, and 6.

As shown in FIG. 5, the support shaft 9 and the housing 13
and the spherical seat 14 constitute one assembly, and the spherical fulcrum portion 8 of the support shaft 9 has a cylindrical shape in which a plurality of slits 29 (eight in the illustrated example) are formed at opposite ends in the generatrix direction. The spherical seat 14 is fitted. The appropriate length of these slits 29 is about 2/3 of the length of the spherical seat 14. The bushings 16 having the above-mentioned square outer shape are fitted to both ends of the support shaft 9. On both end faces of the spherical seat 14, there are synthetic resin guide plates 31 having an elongated hole 15 and a pair of anti-rotation pieces 30 protruding along both long sides of the elongated hole 15.
The anti-rotation piece 30 faces outward and is abutted through the support shaft 9.

The assembly assembled in this way is inserted into the accommodation hole 33 of the housing body 32, and the elongated holes 35 of the pair of retaining plates 34 are respectively fitted into the rotation prevention pieces 30 of both guide plates 31 that protrude from the accommodation hole 33. Together, both the retaining plates 34 and the housing body 32 are tightened by a pair of bolts 36 and nuts 37.
The guide plate 31 and the retaining plate 34 constitute an end wall member, and the pair of end wall members and the housing main body 3
2 constitute a housing 13. The housing body 32 is provided with a gear change lever 12, a select arm 17, and a shift arm 18.

Thus, the housing 13, the support shaft 9 with the spherical fulcrum 8 and the spherical seat 14 constitute one assembly. This assembly is attached to both side plates 7 ₁ of the tower 6,
7 ₂ and both side plates 7 ₁ , 7 ₂ and support shaft 9
By passing the mounting bolt 10 through the base 1 and screwing the nut 11 thereto, the support shaft 9, gear shift lever 12, select lever 17 and shift lever 18 are attached to the base 1.
is placed at a predetermined location.

Note that the guide plate 31 and the retaining plate 34 may be integrated.

C. Effects of the invention According to the invention, since the support shaft is passed through the elongated hole of the housing, the torsional torque acting on the shift lever during the shift operation can be supported by cooperation between the elongated hole and the support shaft. In addition, the span that supports the torsional torque is regulated by the length of the housing in the support axis direction, and is not influenced in any way by the span between the spherical fulcrum and the tip of the first arm, so there is a large degree of freedom. has.

Furthermore, when the first and second arms are provided in the housing, these arms are located in areas that do not interfere with the spherical catch and the spherical fulcrum at all,
This allows the structure to be simplified.

Furthermore, since the spherical fulcrum part and the spherical catch are housed in the housing in a combined state,
There is no need to combine them when assembling the device.
By simply inserting a mounting bolt through the support shaft, the housing can be attached to the base and the gear shift lever, first arm, and second arm can be arranged at appropriate positions.

Further, since the swinging of the gear shift lever in the first or second operating direction is permitted by the sliding of the inner surface of the elongated hole of the housing against the outer surface of the synthetic resin bushing, the movement of the housing and therefore of the gear shift lever is allowed. is carried out smoothly, and on the other hand, the swinging of the gear shift lever in the second or first operation direction is permitted by the bushing slidingly rotating on the support shaft around its axis due to the swinging of the housing. Therefore, the gear shift lever operates smoothly.

Furthermore, since a guide plate for the first or second arm is not required, it is economical.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal sectional side view taken along the line in FIG. 2, FIG. 2 is a sectional view taken along the line in FIG. 1, and FIG. An explanatory view of the speed change pattern, FIG. 3 is an enlarged sectional view taken along the line of FIG. 2, FIG. 4 is a sectional view taken along the line of FIG. 3, and FIG. 5 is a perspective view of the assembly of the support shaft and the housing.
FIG. 6 is an exploded perspective view of the assembly. W ₁ ... Selection wire as the first operation wire, W ₂ ... Shift wire as the second operation wire, 8 ... Spherical fulcrum, 9 ... Support shaft, 10
...Mounting bolt, 12...Speed lever, 13...
Housing, 14... Spherical catch, 15... Elongated hole,
16...Bushing, 17...Select arm as the first arm, 18...Shift arm as the second arm, 31, 34...Guide plate and retaining plate forming the end wall member, 32...Housing body , 33...Accommodation hole.

Claims (1)

[Scope of utility model registration request] Swinging of the speed change lever in a first operating direction is transmitted to a first operating wire via a first arm, and swinging of the speed change lever in a second operating direction perpendicular to the first operating direction is transmitted to a second arm. A gear shift operating device for a transmission configured to transmit information to a second operating wire via a metal hollow support shaft having a spherical fulcrum portion in the middle and fixed to a base by inserting a mounting bolt. a spherical seat that fits into the spherical fulcrum; a housing body that includes a housing hole that fits the spherical seat, the speed change lever, the first arm, and the second arm; both ends of the support shaft; Penetrate the
The housing has an elongated hole that allows the shift lever to swing in the first and second operation directions but prevents rotation of the shift lever about its axis, and is fixed to both end surfaces of the housing body to form a housing. A gear shift operating device for a transmission, comprising: an end wall member; and synthetic resin bushings fitted to both ends of the support shaft so as to be in surface contact with both inner surfaces of the longitudinal sides of the elongated hole.