JPH051723Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) This invention relates to a change lever support device for a vehicle.

(Prior Art) An example of a support device for a floor shift type change lever is shown in "Nissan Service Bulletin" No. 472 (K10-1), page 84.

This will be illustrated and explained in FIGS. 5 and 6.

A lever bracket 1 is mounted near the end of a support rod 2 of a transmission in a vehicle body, and a socket 3 is fixed to the lever bracket 1. The change lever 4 is supported by this socket 3.

The change lever 4 is rotatably connected at its lower end to a control rod 5 of a transmission (not shown), and has a knob 6 attached to its upper end. A spherical part 7 constituting the center of tilting operation of the change lever 4 is formed near the lower end of the intermediate part, and this spherical part 7 is supported within the socket 3.

As shown in detail in FIG. 6, a spherical bearing 8 is incorporated in the socket 3, and the spherical portion 7 of the change lever 4 is connected from above and below by a lower bearing 9 and an upper bearing 10 that constitute this spherical bearing 8. Supported. And Atsupah Bearing 10
is in elastic contact with the spherical body part 7 by a coil spring 11.

Note that 12 is a dust boot, and 13 is a return spring for the change lever.

However, in such a conventional change lever support device, only the upper bearing 10 can move up and down in response to the vertical vibration of the spherical part 7 transmitted from the transmission side. When it moves upward, it floats up from the lower bearing 9, and as it moves downward, it collides with the lower bearing 9, and the repetition of this floating up and collision produces abnormal noise, which is the cause of cabin noise. I was getting used to it. Also change lever 4
There was also a risk that the quality would be impaired due to the repeated vertical movement of the material.

Therefore, the applicant filed the previous utility model registration application (Utility Model No. 73296, filed on May 17, 1985).
proposed a new structure for a change lever support device.

The change lever support device of this prior application is the seventh
A schematic diagram is shown in FIGS.

A socket 3 is fixed to the lever bracket 1 with a screw 14, and a spherical bearing 1 that supports the spherical part 7 of the change lever 4 is installed in the socket 3.
5 is loaded while being held by an elastic body 16.

This spherical bearing 15 is composed of symmetrical bearings 17 and 18 divided into left and right parts. Each of the pair of left and right bearings 17 and 18 has a semi-cylindrical shape, and a semi-concave spherical surface 19 that slides on the spherical portion 7 is formed inside.

Also, the opposing end surfaces 2 of the bearings 17 and 18
0 and 21 have convex portions 23 to form dam means.
and a recess 24 are formed. Therefore, the outer circumferential surface 25 of the convex portion 23 is slidably aligned with the inner circumferential surface 26 of the concave portion 24 .

Further, on the outer peripheral surface of each of the bearings 17 and 18, engaging convex portions 27 and 28 that engage with the elastic body 16 are provided.
is formed.

The elastic body 16 is a cylindrical body made of rubber, and protrusions 29, 30, and 31 are provided on its outer peripheral surface.

The protrusions 29, 30, 31 are left in a protruding form due to the formation of grooves 32, 33 between them.

Then, the spherical bearing 15 is loaded into the socket 3 while being held by an elastic body 16, and the spherical portion 7 of the change lever 4 is supported.

In this change lever support device, when vibration from the transmission is transmitted and the ball part 7 of the change lever 4 moves up and down, the force that moves the ball part 7 upwards as shown in FIG. 9a. The upper parts of the left and right bearings 17 and 18 move outward to the left and right, and along with this movement, the upper parts of the bearing 1
The semi-concave spherical surfaces 19 of each of bearings 7 and 18 slide on the spherical part 7, and the lower portions of the bearings 17 and 18 move inward to the left and right, respectively.

Therefore, the spherical portion 7 is supported without coming loose from the semi-concave spherical surfaces 19 of the bearings 17 and 18 of the spherical bearing 15.

Further, as shown in FIG. 9b, the left and right bearings 17 and 18 are
The lower portions of the spherical bearings 15 move outward to the left and right, and the upper portions thereof move inward to the left and right, and the spherical portion 7 moves to the bearings 17 and 1 of the spherical bearing 15 in the same way as above.
8 is supported without coming loose from each semi-concave spherical surface 19.

Following the movement of the left and right bearings 17 and 18, the elastic body 16 made of anti-vibration rubber undergoes elastic deformation, absorbs the force that the spherical bearing 15 receives from the spherical part 7, and attenuates the vertical movement of the spherical part 7. let

As a result, the change lever support device of the prior application can prevent the spherical portion 7 of the change lever 4 from vibrating within the socket 3 and colliding directly with the socket 3, thereby preventing the generation of impact noise, and also prevents vertical movement. It is also possible to effectively absorb accompanying vibrations.

However, although such a change lever support device can effectively support the change lever, there may be some problems with the elastic body 16. In other words, since the protrusions are formed on the outer periphery of the elastic body, the elastic body can fit tightly into the socket, but on the other hand, if the dimensions of the elastic body become large, the protrusions become deformed. Since there is no relief when it is inserted, it cannot be recessed, and it becomes impossible to load it into the socket.

However, since the elastic body is usually made of a flexible material such as rubber, it is difficult in terms of manufacturing technology to form it in a size that exactly matches the inner surface of the socket. Therefore, the above problems cannot be avoided.

(Problems to be solved by the invention) This invention was devised based on the above considerations, and includes providing a protruding strip on the outer periphery of the elastic body, and a protruding strip adjacent to the protruding strip. Even if the elastic body is formed to be larger than the socket during manufacturing, it is possible to absorb the relief caused by the deformation, and the socket can absorb the deformation of the socket. On the other hand, it is an object of the present invention to provide a support device for a change lever that allows an elastic body to be closely loaded.

[Structure of the invention] (Means for solving the problem) In order to achieve the above object, the change lever support device of this invention has a spherical surface with a concave inner surface in a socket fixed to a fixed member. A support device for a change lever, in which a bearing is loaded with its outer periphery held by an elastic body, and a spherical part forming a center of tilting operation of the change lever is inserted and supported within the spherical bearing, the spherical bearing consists of a pair of semi-cylindrical bearings that are vertically divided into two halves, and a semi-spherical surface is formed on the inner surface of the bearing that slides against the spherical part, and a radial surface is formed on the upper and lower positions of the outer circumferential surface of the bearing. A protruding engagement convex portion is formed,
The elastic body has a shape that fits closely into the socket and holds the spherical bearing on its inner circumferential surface, and has a concave groove on its inner circumferential surface that engages with the engaging protrusion. , and a protruding strip is formed in the circumferential direction of the outer circumferential surface thereof, and an absorber is provided adjacent to the protruding strip in the circumferential direction and has a size that can absorb the volume when the protruding strip changes. It is characterized by forming a concave groove.

(Function) In the change lever support device of this invention, the spherical bearing is loaded into the socket in the form of being held by the elastic body, and when the spherical part of the change lever is fitted into the spherical bearing, the elastic body is The protruding stripes on the outer periphery come into close contact with the inner surface of the socket, and the deformation caused by this contact is absorbed by the absorbing grooves, making it easy to assemble into the socket even if the elastic body is formed slightly larger. .

An embodiment of the present invention will now be described in detail with reference to the drawings. Figures 1 to 4 show one embodiment of the present invention, and parts with the same reference numerals as those used in the description of the conventional example and the device of the prior application have the same configuration.

As shown in FIG. 1, the socket 3 is fixed on the lever bracket 1. Inside this socket 3, there is an elastic body 34 made of a flexible material such as rubber.
A spherical bearing 15 is loaded via the spherical bearing 15.

A change lever 4 is installed in this spherical bearing 15.
A spherical part 7 is inserted and supported.

Therefore, rotation of the spherical part 7 by operating the change lever 4 is supported by the spherical bearing 15.

The detailed structure of the elastic body 34 in such a change lever support device is shown in FIGS. 2 to 4. The elastic body 34 has a substantially cylindrical shape, and has upper and lower engaging protrusions 27, 2 of the spherical bearing 15 on its inner peripheral surface.
Recessed grooves 32 and 33 are provided to engage with the grooves 8.

Convex strips 35 and 36 are formed on the outer circumference of the portion of the elastic body 34 where the grooves 32 and 33 are provided, and a protrusion strip 37 is formed on the outer circumference of the upper and lower intermediate positions.
is formed.

Absorption grooves 38 are formed at upper and lower positions adjacent to each of these protrusions 35, 36, and 37. This absorption groove 38 is formed by the convex portions 35, 3.
Each of the sockets 6 and 37 is large enough to absorb the volume of the socket 3 when it is pressed against the inner circumferential surface of the socket 3 and deformed.

A relief groove 39 is formed around the bottom surface of the elastic body 34 to absorb deformation of the edge portion 40.

When the spherical bearing 15 is held by the elastic body 34 and loaded into the socket 3, the protrusions 35, 36, 37 of the elastic body 34 come into pressure contact with the inner peripheral surface of the socket 3.

And when the dimensions of the elastic body 34 are large,
Each of the protrusions 35, 36, and 37 is deformed by the pressing force thereof, and the volume at the time of deformation is absorbed by the absorption groove 38.

When the size of the elastic body 34 is smaller, the top portions of the protrusions 35, 36, and 37 are in close contact with the inner circumferential surface of the socket 3, respectively. Therefore, even if there is some error in the manufacturing dimensions of the elastic body 34, as long as the error is about the same as the protruding length of the protrusions 35, 36, 37, it can be installed in the socket 3 without any support.

Furthermore, by providing the absorption grooves 38 on the protrusions 35, 36, and 37, the pressure contact force between the protrusions and the inner surface of the socket is reduced, and the holding force from the elastic body 34 to the spherical bearing 15 is also equalized. As a result, the supporting force of the spherical portion 7 can be equalized.

Note that this invention is not limited to the above embodiments, and the shape of the elastic body and the shape and number of the protrusions and grooves can be changed.

[Effects of the invention] Since this invention has the above-mentioned configuration, the elastic body is formed to be larger, and even if a large pressing force is applied to the protruding portion during assembly into the socket, the absorbing groove will prevent the protrusion from forming. Deformation of the strips can be absorbed, and the elastic body can be easily assembled.

Therefore, when assembling an elastic body into a socket, which tends to have errors in manufacturing dimensions due to the nature of the material, there is an advantage in that it is easy to assemble the elastic body into the socket. In addition, by providing the above-mentioned absorbing groove, the pressure force between the protruding portion and the inner surface of the socket is alleviated, and the holding force from the elastic body to the spherical bearing is equalized, so that the supporting force of the spherical portion is also equalized. As a result, the operating feeling of the change lever can be improved.

Furthermore, the spherical bearing is composed of a pair of half-cylindrical bearings divided into two vertically, and engagement protrusions are provided on the upper and lower sides of this bearing, and engagement protrusions are engaged with the engagement protrusions on the inner circumferential surface of the elastic body. Since the concave groove is formed in the elastic body, the wall thickness at the concave groove position of the elastic body is thin, and the rigidity in the radial direction can be increased. The thick part between the grooves formed on the upper and lower parts is sandwiched and engaged with the engagement convex part of the bearing, so it undergoes elastic deformation following the movement of the bearing, and forms a sphere. It is possible to absorb the force that the spherical bearing receives from the spherical part and attenuate the vertical movement of the spherical part.

Therefore, vertical vibration transmitted from the transmission side can be reduced, vibration noise can be reduced, and the quality of the change lever can be improved.

[Brief explanation of drawings]

Fig. 1 is a sectional view of an embodiment of this invention, Fig. 2 is a partially cutaway front view of the elastic body used in the above embodiment,
Fig. 3 is an enlarged view of section A in Fig. 2, Fig. 4 is an enlarged view of section B in Fig. 2, Fig. 5 is a side view of a conventional change lever support device, and Fig. 6 is an enlarged view of the above conventional support device. FIG. 7 is a sectional view of the change lever support device of the earlier application, FIG. 8 is an exploded perspective view of the spherical bearing portion of the change lever support device of the earlier application, and FIG. Figures a and b are explanatory diagrams illustrating the operation of the change lever support device of the prior application. 1... Lever bracket, 3... Socket, 4
... Change lever, 7 ... Spherical part, 15 ... Spherical bearing, 27, 28 ... Engagement convex part, 32, 33 ...
...Concave groove, 34...Elastic body, 35, 36, 37...
Convex portion, 38... absorption groove.

Claims (1)

[Claims for Utility Model Registration] A spherical bearing with a concave spherical inner surface is loaded into a socket fixed to a fixed member, and its outer periphery is held by an elastic body, and a change lever is tilted into the spherical bearing. This is a support device for a change lever, in which a spherical part forming the center of operation is inserted and supported, and the spherical bearing consists of a pair of half-cylindrical bearings divided vertically into two parts, and the inner surface of this bearing has: A semicircular spherical surface is formed in sliding contact with the spherical portion, and engaging convex portions protruding in the radial direction are formed at upper and lower positions of the outer peripheral surface of the semicircular surface, and the elastic body is in close contact with the inside of the socket, The elastic body has a shape that holds the spherical bearing on its inner circumferential surface, and has a concave groove that engages with the engaging convex portion on the inner circumferential surface of the elastic body, and a convex strip in the circumferential direction on its outer circumferential surface. and an absorption groove having a size capable of absorbing the volume when the protruding strip is deformed is formed adjacent to the protruding strip in the circumferential direction. A support device for the change lever.