JPH018418Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement in the support structure of a change lever in a floor shift type.

(Prior Art) Conventionally, this type of support structure for a change lever has been described, for example, in Japanese Utility Model Application Publication No. 57-8125, or as shown in FIGS. 1 and 2 ("Coach" manufactured by Nissan Motor Co., Ltd.). As shown in the change lever support structure of the E-K10 model car, a support bracket 2 is disposed at one end of a support rod 1 extending from a transmission (not shown), and a change lever L is pivotally supported on the support bracket 2. In addition, there is one in which the lower part La of the change lever L is inserted through the opening 3 of the support bracket 2 and connected to the control rod 4 of the transmission. The spherical part 5, which serves as the pivot point of the change lever L, is housed in a socket 7 fixed on the support bracket 2 with a bolt (not shown), as shown in FIG. 2, for example. It is rotatably supported by a lower bearing 8 integrally disposed around the periphery of the opening 3 and an upper bearing 10 urged downward by a spring 9 whose upper end is supported on the socket 7 side. The socket 7 has a substantially hat-shaped cross section, and a hole 11 through which the change lever L is inserted is provided in the upper surface thereof.

In this case, the lower bearing 8 supports the spherical part 5 from below while being fixed to the support bracket 2, and the upper bearing 10 supports the spherical part 5 from above while being biased by the spring 9. As a result, the operation feeling of the change lever L can be maintained good, and the upper bearing 10 is also able to withstand vertical vibrations transmitted from the control rod 4 to the spherical part 5 through the lower part La of the change lever L. The structure is such that the spring 9 follows the movement of the spherical body 5 by bending and deforming, thereby softening the impact from the transmission side.

In addition, the reference numeral 14 in FIG. 2 is the support bracket 2.
This is a dustproof and soundproof dust boot that keeps airtight between the 3 edges of the opening and the lower part La of the change lever L.

However, in such a conventional change lever support structure, only the upper bearing 10 can follow the vertical vibration of the spherical part 5, and the lower bearing 8 can follow the movement of the support bracket 2.
Because of the fixed structure, vibrations from the transmission side are transmitted from the spherical part 5 of the change lever L to the vehicle body via the lower bearing 8, causing noise inside the vehicle. It was hot.

(Purpose of the invention) The present invention was made by focusing on the above-mentioned conventional problems, and its purpose is to reduce the vertical vibration of the spherical part through the bearing without impairing the operating feel of the change lever. To provide a support structure for a change lever capable of preventing abnormal noise from being transmitted to the vehicle body side.

(Structure of the invention) The structure of the invention is that a bracket is disposed at one end of a support rod extending from the transmission,
The spherical part that becomes the pivot point of the change lever is stored in the socket fixed to this bracket, and
This spherical part is rotatably supported by an upper bearing and a lower bearing that are biased downward by a spring, and a dust boot made of an elastic material covers the space between the support bracket and the lower part of the change lever. In the support structure of the change lever, the lower bearing is formed to have a substantially U-shaped cross section and a space is provided on the back side thereof, and the upper fixing part of the dust boot has an upper fixing part that is integrally molded with the upper fixing part. A thick elastic part having a shape corresponding to the space of the lower bearing is formed, and this elastic part is applied to the entire back surface of the lower bearing to bias the lower bearing upward and push it against the socket. It is supported so that it can move up and down.

(Example) Examples of the present invention will be described in detail below based on the accompanying drawings.

In the first embodiment of the present invention shown in FIGS. 3 and 4, the support structure of the change lever is similar to the conventional one, with a support bracket 2 disposed at one end of the support rod 1.
A socket 7 is fixed on the top with a bolt 6, and a spherical part 5 which becomes a pivot point of the change lever L is housed in this socket 7, and a lower bearing 16 arranged around the periphery of the opening 3 of the support bracket 2 and the above-mentioned socket are fixed. The spherical part 5 is rotatably supported by an upper bearing 10 which is biased downward by a spring 9 whose upper end is supported by a lower bracket 16. The dust boot 14 is inserted so as to be movable up and down, and is supported in an upwardly biased state by a thick elastic part 17 that constitutes the upper fixed part of the dust boot 14, and its lower end 18 and the support bracket 2 A gap 19 is formed between the opening 3 and the peripheral edge of the opening 3.

The elastic portion 17 is erected and held all around the edge of the opening 3 of the support bracket 2, and its lower end is integrally connected to the upper end of the dust boot 14. In addition, the cross-sectional shape of the elastic portion 17 is a shape that approximately corresponds to the shape of the space on the back side of the lower bearing 16, and by fitting into the back side of the lower bearing 16, it supports the upper bearing 10 with pressure. The amount of bending deformation of the elastic portion 17 against the lower bearing 16 is reduced, and the support rigidity of the lower bearing 16 is increased. Further, a flange-like protrusion 17a of the elastic portion 17 is inserted into the gap 19. Incidentally, reference numeral 12 in FIG. 3 is a rubber-like holding member that elastically supports the upper end of the spring 9.

Therefore, according to the change lever support structure of the above embodiment, the spherical part 5 is supported under pressure by the lower bearing 16 and the spring 9, which are supported while being urged upward by the elastic part 17. to be supported by the upper bearing 10,
When vibrations in the vertical direction are transmitted from the control rod 4 to the spherical part 5 through the lower part La of the change lever L, against the floating movement of the spherical part 5,
In addition to the upper bearing 10 following upward movement due to the deflection of the spring 9, the lower bearing 16 also remains in contact with the spherical part 5 due to the restoring elastic force of the elastic part 17 accompanying this movement. Move upward. In addition, against the sinking movement of the spherical part 5, the upper bearing 10 is prevented by the restoring force of the spring 9.
follows the spherical part 5 and moves downward, and in conjunction with this movement, the lower bearing 16 is also pushed down.

In this way, the upper bearing 10 and the lower bearing 16
Since it can move up and down while in contact with the outer surface of the spherical part 5, there is no chance of chattering noise or the like occurring between it and the spherical part 5. Further, since the lower bearing 16 is supported by the elastic part 17, even when the lower bearing 16 moves up and down, the lower end 1
8 has never come into contact with the periphery of the opening 3 of the support bracket 2, and there has never been a case where a chattering or tapping sound is generated between the lower end 18 and the periphery of the opening 3.

Furthermore, in the above embodiment, since the upper and lower sides of the spherical part 5 are elastically supported by the spring 9 and the elastic part 17, there is an effect that the vertical vibration of the spherical part 5 can be absorbed by these members. .

Furthermore, in the embodiment described above, the elastic portion 5 is shaped to follow the back side of the lower bearing 16 to reduce bending deformation due to external force, so when the change lever L is operated, the amount of bending of the elastic portion 17 due to external force is small. , I have never had the feeling of operating the change lever L being impaired.

FIG. 5 shows a second embodiment of the present invention, in which the peripheral edge of the opening 3 of the support bracket 2 is recessed, the lower end 18 of the lower bearing 16 is disposed above the recess 20, and the lower end 18 of the lower bearing 16 is disposed above the recess 20. portion 18 and recess 20
This is the same as the previous embodiment except that the lower bearing 16 is elastically supported with a gap provided between it and the bottom surface 21 of the lower bearing 16.

Therefore, in this embodiment as well, the lower end 18 of the lower bearing 16 does not hit the support bracket 2 due to the vertical vibration of the spherical body 5, so that it is possible to prevent the occurrence of chattering noise or the like due to vibration.
FIG. 6 shows a third embodiment of the present invention, in which an elastic portion 17 is inserted into the recess 20 of the support bracket 2 and between the lower bearing 16 and the socket 7. This shows a fourth embodiment of the present invention, in which a lower end 16 of a lower bearing 16 is shown.
The elastic part 17 is inserted between the support bracket 2, the socket 7, and the lower bracket 16 by bending the part a horizontally, and the same effect as that of the above embodiment can be obtained.

(Effect of the invention) As explained above, according to the support structure of the change lever according to the invention of the present application, dust having a shape corresponding to the space is formed on the entire back surface of the lower bearing having the space having a U-shaped cross section. By applying the thick elastic part of the boot, this elastic part urges the lower bearing upward and supports it so that it can move up and down against the socket, so the lower bearing comes into contact with the outer surface of the spherical part. It can be moved up and down in the spherical state, and there has never been a chattering noise between it and the spherical part.
In addition, when a large external force is generated, such as when operating the change lever, the entire back surface and lower end of the lower bearing press against the thick elastic part, but because the elastic part is thick, the amount of flexural deformation is small. This improves the support rigidity of the lower bearing, and even if an external force is applied to one point on the lower bearing, the elastic part can disperse the external force and absorb it uniformly across the entire elastic part, so the change lever This eliminates sinking and provides a stable operating feel. Therefore, without impairing the operating feel of the change lever, it effectively prevents the generation of abnormal noises that cause interior noise, such as chatter and hammering noises between the lower bearing and the bracket due to the vertical vibration of the spherical part. You can get the effect that you can.

[Brief explanation of drawings]

FIG. 1 is an overall view showing a support structure for a change lever, FIG. 2 is a sectional view showing an example of a conventional support structure for a change lever, and FIG. 3 is a first embodiment of a support structure for a change lever according to the present invention. FIG. 4 is an enlarged sectional view of the main part of FIG. 3, FIG. 5 is a sectional view of the main part of the second embodiment of the present invention, and FIG.
The figure is a sectional view of a main part showing a third embodiment of the present invention, and FIG. 7 is a sectional view of a main part showing a fourth embodiment of the present invention. 1...Support rod, 2...Support bracket, 5...Spherical part, 7...Socket, 8, 16
...Lower bearing, 10...Upper bearing,
17...Elastic part (dust boots), L...Change lever.

Claims (1)

[Claims for Utility Model Registration] A bracket is disposed at one end of the support rod extending from the transmission, and a spherical part serving as a pivot point for the change lever is housed in a socket fixed to this bracket, and this spherical part is supported by a spring. In a support structure for a change lever, the support structure is rotatably supported by an upper bearing and a lower bearing that are biased downward at , the lower bearing is formed into a substantially U-shaped cross section and a space is provided on the back side thereof, and the upper fixing part of the dust boot has a space part formed integrally with the upper fixing part and of the lower bearing. a thick elastic part having a shape corresponding to the shape of the lower bearing is formed, and this elastic part is applied to the entire back surface of the lower bearing to urge the lower bearing upward and move up and down with respect to the socket. A support structure for a change lever characterized in that it is supported by.