JP2597546Y2 - Transmission control linkage shock absorber - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a shock absorber for a transmission control linkage.

[0002]

2. Description of the Related Art An unpleasant impact called a feeling of stiffness is transmitted to a driver through a control lever due to a stepping over of a chamfer in a synchro mechanism during a gear shift or a collision of a stopper at the end of a shift.

In Japanese Utility Model Laid-Open Publication No. 1-120226, a transmission using a wire type control linkage is disclosed.
There has been proposed a rubber bush and a weight that exert a dynamic damper effect.

However, in a transmission using a rod type control linkage, when a damper rubber is mounted on the control linkage, in order to obtain a sufficient cushioning effect, the hardness and shape of the damper rubber are changed to lower the spring constant. However, it is necessary to reduce the rigidity of the control linkage, resulting in an increase in the stroke, a reduction in the durability of the damper rubber, and an increase in the size of the damper rubber in order to prevent this. There was a point.

An object of the present invention is to solve the above-mentioned problems in a transmission using a rod-type control linkage.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a ring outer peripheral surface.
Connect one end of the control linkage radially to
At right angles to the control linkage inside the ring,
A columnar shape that passes through the center of the ring and joins both inner circumferential surfaces of the ring
Of the damper rubber ring
A bush is buried in the center position, and this bush is
Attach the outer lever end and
Control linkage extension of bush covered with
A shock absorber for a transmission control linkage provided with stoppers on both sides of the line that abut against the inner peripheral surface of the ring to regulate the amount of deformation of the damper rubber.

[0007]

When the driver moves the control linkage in the axial direction via the control lever, the outer lever rotates and the transmission changes gears. At the time of this shift, the shock and vibration transmitted to the outer lever due to overcoming of the chamfer in the synchronization mechanism are absorbed by the elastic deformation of the damper rubber in the ring,
This transmission of the shock and vibration to the control linkage is suppressed.

[0008] Since the amount of elastic deformation of the damper rubber is regulated by the contact of each stopper with the inner periphery of the ring, the movement of the control linkage can be transmitted to the outer lever with an appropriate rigidity.

Further, since the amount of elastic deformation of the damper rubber is regulated by the ring, the durability can be sufficiently ensured while securing an appropriate spring constant.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 2, an outer lever 2 is provided outside the transmission 1, and when a control lever (not shown) is operated by a driver, a control linkage 4 is provided.
Is displaced in the axial direction, and the outer lever 2 is rotated to perform a gear change. The outer lever 2 and the control linkage 4 are connected via a dynamic damper 3 so as to absorb a shock during shifting.

As shown in FIG. 1, the dynamic damper 3
One end of the control linkage 4 is radially connected to a side surface of the ring 5, and a damper rubber 6 is erected in the radial direction inside the ring 5 so as to be substantially perpendicular to the control linkage 4. The portion is provided with a coupling portion to the outer lever of the transmission 1. Both ends of the rubber damper rubber 6 are vulcanized and welded to the inner peripheral surface of the ring 5.

The outer lever 2 is substantially perpendicular to the control linkage 4 and the damper rubber 6. A stepped bolt 7 is fastened to the rotating tip of the outer lever 2, and a bush 8 is provided to be slidably fitted to the stepped bolt 7, and is connected to the damper rubber 6 via an outer periphery 9 of the bush 8. doing.

The bush 8 is integrally formed with a pair of stoppers 11 for regulating the amount of deformation of the damper rubber 6. Each stopper 11 extends the control linkage 4.
It protrudes so as to be orthogonal to the damper rubber 6 on the long line . Bush 8 provided with a stopper 11, of the ring 5
A columnar dam that passes through the center and is connected to both inner peripheral surfaces of the ring 5
It is welded by welding at the center of the par rubber 6 .

A gap having a predetermined width L is provided between each stopper 11 and the ring 5 in the axial direction of the control linkage 4.

Next, the operation will be described.

When the driver moves the control linkage 4 in the axial direction as shown by the arrow in the figure via a control lever (not shown), the outer lever 2 rotates and the transmission 1 changes gears. At the time of this gear shift, an impact generated by, for example, climbing over the chamfer in the synchronization mechanism is transmitted to the outer lever 2. Outer lever 2
Is absorbed by the elastic deformation of the damper rubber 6 in the ring 5 and suppresses the transmission of the impact and vibration to the driver via the control linkage 4 and the control lever.

Since the amount of elastic deformation of the damper rubber 6 is regulated by one of the stoppers 11 abutting on the inner periphery of the ring 5, the operation of the control lever causes the outer through the control linkage 4 and the damper rubber 6. The lever 2 can be rotated with an appropriate rigidity.

Since the amount of elastic deformation of the damper rubber 6 is regulated by the ring 5, the durability of the damper rubber 6 can be sufficiently secured while securing an appropriate spring constant.

[0020]

[Effects of the Invention] As described above, the present invention is applicable to the outside of the ring.
Connect one end of the control linkage radially to the circumference
And make it perpendicular to the control linkage inside the ring
Through the center of the ring and connect to both inner circumferential surfaces of the ring
A pillar-shaped damper rubber is erected, and the damper rubber
The bush is buried at the center of the
Attach the outer lever end of the machine and
Rubber-coated bush control linkage
A transmission provided with stoppers at both side positions on the extension that contact the inner peripheral surface of the ring and regulate the amount of deformation of the damper rubber.
Since the shock absorber of the control linkage is used, it is possible to sufficiently absorb an unpleasant impact generated at the time of shifting, and to transmit the movement of the control linkage to the outer lever with an appropriate rigidity. In addition, since the amount of deflection of the damper rubber is regulated by the stopper, both miniaturization of the damper rubber and securing of durability can be achieved.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a perspective view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transmission 2 Outer lever 3 Dynamic damper 4 Control linkage 5 Ring 6 Damper rubber 11 Stopper

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F16H 61/26-63/38 F16C 7/04 F16F 15/08

Claims (1)

(57) [Scope of request for utility model registration] 1. A radial control ring on the outer peripheral surface of the ring.
Connect one end of the cage and control inside the ring
Ring perpendicular to the linkage and through the center of the ring
A pillar-shaped damper rubber to be connected to both inner peripheral surfaces of
Bushing buried in the center of the damper rubber ring
And the outer lever end of the transmission is connected to this bush.
Of the bush covered with the damper rubber
Rings on both sides of the control linkage extension
A shock absorber for a transmission control linkage, wherein a stopper is provided to abut on an inner peripheral surface to regulate a deformation amount of a damper rubber.