JPS5819067Y2 - Remote control linkage joint in transmission - Google Patents

Description

[Detailed description of the invention] This invention relates to a remote control linkage for a vehicle transmission, and is particularly applicable to a remote control linkage of a type in which the operating fulcrum of the shift L/bar is on the floor, or a single refloor shift type. It is about the joint.

Generally, this type of transmission is provided with a shift stopper to restrict the stroke of a sleeve that operates within the transmission in response to a shift operation.

The presence of this shift stopper causes a shock to occur upon completion of the shift operation.

In addition, during a shift operation, the spline chamfer formed in the sleeve mentioned above hits the chamfer of the synchronizer ring to achieve synchronization, and the chamfer of the sleeve also hits the chamfer on the meshing gear side after synchronization is completed. The impact occurs twice: when the ball hits the ball.

This is an impact commonly referred to as the "double hole phenomenon."

Conventionally, the impact caused by the shift stopper, the impact caused by the "double hole phenomenon," and vibrations transmitted from the engine to the transmission are transmitted through a remote control linkage to the floor where the operating fulcrum of the shift lever is located.

The vibrations transmitted to the floor can cause a button inside the vehicle interior, causing a loud noise.

In addition, at the connection point between the lever and rod that constitute the remote control linkage, a rubber-like elastic bushing is fixed to one of these members, and this bushing has a long hole with play in the operating direction of the lever and rod. A structure in which the other member is provided with a pin to be inserted into a long hole of the bushing has already been disclosed (see Japanese Utility Model Publication No. 1986/1986).

However, with this configuration, when a speed change operation is performed, for example, the pin transmits movement from one member to the other after the play in the long hole of the bush is reduced.

For this reason, when the free play is filled in, a shock may occur and the operating feeling may deteriorate.If the free play is filled in, the shock caused by the "double hole phenomenon" mentioned above cannot be sufficiently absorbed. There is a problem that it is not done.

In addition, in this structure, since the pin slides along the long hole of the bushing, the bushing is likely to be worn out, and the durability of the connecting portion is reduced.

This idea incorporates a vibration-isolating elastic body into a part of the remote control linkage, such as the shift linkage, to block vibrations transmitted through this linkage, while also preventing excessive shift operation force from being applied. The object of the present invention is to provide a joint for a remote control linkage that is configured to prevent excessive deformation of the elastic body and maintain shift rigidity even in the case of a remote control linkage.

Next, the configuration of this invention will be explained in detail with reference to embodiments shown in the drawings.

First, FIG. 1 shows a shift system linkage 3 of the floor shift type remote control linkage of an automobile.

In FIG. 1, the shaft 2 of the operating fulcrum of the shift lever 1 is
is attached to the floor (not shown).

This shift operation of the shift lever 1 is transmitted as a shift operation to a transmission (not shown) through the shift system linkage 3 described above.

Now, there are various types of shift linkage 3, but
In the type shown in FIG. 1, the first rod 4 is connected to the lower end of the shift lever 1, and the third lever 8 on the transmission side is connected to the lower end of the shift lever 1.
The 20th section 6 is connected to the 20th section 6.

A first lever 5 and a second lever 7 are disposed between these rods 4 and 6, and are integrally formed with each other and operate around a common pivot shaft 13.

The lever 5 is connected to the tenth lever 4, and the second lever I is connected to the twentieth lever 6Vc.

Therefore, the structure of the joint between the 20th arm 6 and the second lever 7 will be explained in detail with reference to FIGS. 2 to 4.

1. The holder 9 attached to the above rod 6 is
In Figures 2 and 3, the upper and lower surfaces are open.
It has a frame shape, so to speak, and is large enough to allow the tip 7a of the second lever 7 to be inserted therein.

Note that a part of the outer circumference of this holder 9 has a female thread 10a.
A coupling shaft 10 having a diameter is fixed by welding.

The male thread 6a formed at the end of the rod 6 is screwed into the female thread 10a of the coupling shaft 10, and the nut 1 is screwed into the female thread 10a of the coupling shaft 10.
The rod 6 and the holder 9 are connected by preventing each other from loosening.

Further, inside the holder 9, a vibration-proofing elastic body 12 made of a material such as rubber is fitted.

This elastic body 12 has an outer circumferential part 12b formed along the inner circumference of the holder 9, and this outer circumferential part 12b and the holder 9
is strongly bonded to the inner peripheral surface by, for example, vulcanization adhesion.

Furthermore, this elastic body 12 has a connecting portion 12a that is integrally formed with the outer circumferential portion 12b and spans between the opposing inner surfaces of the outer circumferential portion 12b.

On the other hand, the tip 7a of the second lever I is formed with a lattice-shaped grip 14.

This gripping portion 14 holds the tip 7a of the lever 7 against the holder 9.
The elastic body 12 is inserted into the elastic body 12 from below.
(see FIGS. 3 and 4).

The grip portion 14 described above is constructed by cutting out the tip 7a of the lever 7 in a U-shape, and welding a grip plate 14a bent into a U-shape thereto.

This gripping play) 14a allows the elastic body 12 to
The contact surface between the connecting portion 12a of the lever 7 and the gripping portion 14 of the lever 7 is made large.

As is clear from the drawings, the width of the opening of the gripping portion 14 is set smaller than the outer diameter of the connecting portion 12a.

When connecting them, the connecting part 12a passes through the opening of the gripping part 14 due to its elastic deformation, and the connected state thereafter becomes stable.

The tip 7a of the lever 7 in this connected state is
It faces the inner surface of the outer peripheral part 1 of the elastic body 12 with a certain gap in the operating direction of the lever T (see FIGS. 3 and 4).

Now, according to the above configuration, the 20th lug 6 of the shift system linkage 3 and the second lever 7 are connected with the vibration-proofing elastic body 12 interposed therebetween.

Therefore, as mentioned above, even if various shocks generated within the transmission during a shift operation or vibrations from the engine are transmitted through the third lever 8 and the twentieth lever 6,
This vibration is blocked between the twentieth arm 6 and the second lever 7.

Further, when an excessive shift operation force is applied to the shift system linkage 3, the connecting portion 12a of the elastic body 12 tends to be significantly deformed.

However, in this case, the tip 1a of the second lever 7 is
This corresponds to the inner surface of the outer peripheral portion 12b of No. 2.

Since the shape of the outer circumferential portion 12b is held by the holder 9, a situation in which the above-mentioned connecting portion 12a is greatly deformed and the shift rigidity is reduced is prevented.

Note that the configuration of the connection point between the 20th bolt 6 and the second lever 7 described above is the same as the connection location between the 10th bolt 4 and the second lever 7,
Alternatively, even when applied to the connecting portion between the 20th arm 6 and the third lever 8, the same vibration-proofing function as described above can be obtained.

Furthermore, this connection structure may be used in a selection type linkage of a remote control linkage.

As described above, this invention provides a frame-shaped holder at the connection point between the rod and lever that makes up the floor shift type remote control linkage, into which the tip of the lever can be inserted into the end of the rod. A vibration isolating elastic body is fixed to the inner circumference of the holder, and a connecting part extending over the opposing inner surfaces of the elastic body is integrally formed. Since the tip of the lever is connected, vibrations from the engine side using this linkage as a transmission path are blocked by the elastic body, thereby suppressing the occurrence of abnormal noise in the passenger compartment.

In particular, this invention provides a certain gap in the operating direction of the lever between the tip of the lever connected to the connecting part of the elastic body and the elastic body fixed to the inner surface of the holder. When an excessive operating force is applied to the remote control linkage, the tip of the lever elastically deforms the connecting portion of the elastic body and closes the gap between the inner surface of the holder and the elastic body.

Therefore, it is possible to avoid the inconvenience that the connection point between the lever and the rod is largely displaced and cause a decrease in operating rigidity, and even when this gap is closed, the elastic action of the connection section is always effective, so the gap It can cushion the shock when the gear is fully packed, and also sufficiently absorb various shocks that occur inside the transmission during shift operations (such as the shock caused by the two-gear phenomenon), thereby maintaining a good operating feeling. can.

Moreover, in the connection point between the lever and the rod in this invention, there is no large sliding movement between the elastic body on the rod side and the lever side, resulting in less wear and tear and improved durability.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, and Fig. 1 is a perspective view showing a floor shift type shift system linkage, and Fig. 2 is a separated view of the joint between the rod and lever that button the linkage in Fig. 1. Fig. 3 is a sectional view of the state in which the joint parts are connected, and Fig. 4 is a perspective view of the state in which the joint parts are connected.
FIG. 4.6: Rod, 5, 7, 8 lever, 9: Holder
12: Elastic body, 12a: Connection portion of the elastic body.

Claims (1)

[Scope of utility model registration request] A remote control linkage in which the operating fulcrum of the shift lever is located on the floor, and a frame into which the tip of the lever can be inserted into the end of the rod at the connection point between the lever and the rod that forms part of the linkage. A holder with a shape of A grip formed at the tip of the lever is connected to the holder, and the tip of the lever in this state is opposed to an elastic body fixed to the inner surface of the holder with a certain gap in the operating direction of the lever. The joint of the remote control linkage is characterized by: