JPH0412271Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a support device for a shift lever of an automobile.

[Prior Art] As a conventional floor shift type shift lever support device, the one shown in FIGS. 3 and 4, for example, is known. This conventional shift lever support device has a socket 2 fixed to a lever bracket 1, and a spherical bearing 5 for supporting a spherical portion 4 of a shift lever 3 held within the socket 2 by a rubber socket 6. It is configured to be loaded with.

and a concave spherical surface 7 on the inner surface of the spherical bearing 5;
The radius of curvature of the shift lever 3 with respect to the outer circumferential surface of the spherical portion 4 is set to be approximately equal in all directions.

A control rod 8 is connected to the lower end of the shift lever 3, and the control rod 8 shifts gears of a transmission (not shown).

Therefore, when shifting gears, when the shift lever 3 is operated by holding the knob 9 of the shift lever 3 and tilting the shift lever 3, the spherical part 4 slides and rotates on the concave spherical surface 7 in the spherical bearing 5, and the lower end of the shift lever 3 A control rod 8 connected to the transmission transmits movement to the transmission and performs a gear shift operation.

[Problems to be solved by the invention] However, in this conventional shift lever support device, the radius of curvature of the concave spherical surface 7 of the spherical bearing 5 and the outer circumferential surface of the spherical portion 4 on the shift lever 3 side are approximately equal in size. , when the spherical part 4 rotates, there is a complete surface contact between the spherical part 4 and the concave spherical surface 7, resulting in large contact resistance and a tendency to not provide a light operational feeling. .

[Purpose of the invention] This invention was made in order to solve these conventional problems, and the object is to provide a shift lever support device that has low contact resistance and provides a light shift operation feeling. purpose.

[Structure of the invention] The shift lever support device of this invention includes a spherical bearing with a concave spherical inner surface, which is formed by a semi-cylindrical bearing segment divided vertically into two, and a rubber socket that holds the spherical bearing. The shift lever support device is loaded into a socket with a spherical bearing, and has a spherical part that forms the operation center of the shift lever inserted and supported within the concave spherical surface of the spherical bearing, the spherical part forming a center of operation of the shift lever being inserted and supported, The radius of curvature in the horizontal direction at the position is approximately equal to the radius of curvature of the spherical part, and the radius of curvature in the vertical direction of the concave spherical surface of the spherical bearing is set to be larger than the radius of curvature of the spherical part. Effect] In the shift lever support device of this invention, the radius of curvature in the horizontal direction at the intermediate position of the concave spherical surface of the spherical bearing is made approximately equal to the radius of curvature of the spherical portion, and the radius of curvature in the vertical direction is made smaller than the radius of curvature of the spherical portion. Since it is set to be large, when the spherical part rotates, the spherical part does not make surface contact with the concave spherical surface, but makes line contact at an intermediate position of the concave spherical surface. Therefore, the contact resistance during rotation of this spherical part can be reduced.

[Example] Hereinafter, an example of this invention will be explained in detail based on the drawings.

FIGS. 1 and 2 show an embodiment of this invention. A rubber socket 12 is inserted into a socket 11 attached to a support rod (not shown) of a transmission as a fixed member, and a semi-cylindrical bearing divided into two parts constituting a spherical bearing 13 is inserted into this rubber socket 12. divided body 14,
14 has been inserted. Each bearing segment 14 has a semi-concave spherical surface 15 on its inner surface, and when inserted into the rubber socket 12, a concave spherical surface 16 is formed inside.

A spherical part 18 formed at the middle part of the shift lever 17 is inserted into the spherical bearing 13 made up of the above-mentioned bearing parts 14, 14, and the bearing part 14 holds this spherical part 18 from both sides. . Here, the bearing division bodies 14, 14
The concave spherical surface 16 formed on the inner surface of the spherical bearing 13 is formed by the rubber socket 12.
It is pressed against the spherical portion 18 of the shift lever 17.

In this embodiment, the semi-concave spherical surface 1 of each bearing segment 14, 14 constituting these spherical bearings 13
The radius of curvature in the horizontal direction at the intermediate position between 5 and 15 is approximately equal to the radius of curvature of the spherical part 18, and the radius of curvature in the vertical direction of the semi-concave spherical surface 15 is set to be slightly larger than the radius of curvature of the spherical part 18. . Therefore, in the intermediate position shown in FIG. 1, a slight clearance C is formed between the upper and lower ends of the spherical portion 18 and the upper and lower ends of the concave spherical surface 16 of the spherical bearing 13.

One end of a control rod 20 is connected to the lower end of the shift lever 17 by a spider bolt 19. Further, a return spring 21 is hung on the control rod 20 in order to return the control rod 20 to the neutral position.

Next, the operation of the shift lever support device having the above structure will be explained.

When shifting gears of the transmission, the operator holds and operates the shift lever 17. By operating the shift lever 17, the spherical portion 18 slides and rotates within the concave spherical surface 16 of the spherical bearing 13.
As a result, the control rod 20 connected to the lower end of the shift lever 17 is translated back and forth in its axial direction, thereby shifting gears of the transmission.

During this shift operation, the spherical portion 18 moves to the concave spherical surface 16.
However, since the radius of curvature is different between the concave spherical surface 16 and the outer peripheral surface of the spherical part 18, the spherical part 18 rotates while contacting the concave spherical surface 16 with a narrow contact surface close to a line contact. It turns out. Therefore, the contact resistance during rotation can be reduced, allowing for light shifting operations.

[Effect of the invention] As described above, according to this invention, the radius of curvature in the horizontal direction at the intermediate position of the concave spherical surface of the spherical bearing is made almost equal to the radius of curvature of the spherical part, and the radius of curvature in the vertical direction is made equal to the radius of curvature of the spherical part. Since it is set larger than the radius, the spherical part makes one line contact at the intermediate position of the concave spherical surface of the spherical bearing. Therefore, the contact resistance during rotation can be extremely small, making shifting operations easier. Furthermore, since the concave spherical surface of the spherical bearing is pressed into contact with the spherical part of the shift lever by a rubber socket, there is no play between the concave spherical surface and the spherical part, which prevents abnormal noises and improves performance during shift operations. The operation feeling can be improved.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of one embodiment of this invention, Fig. 2 is an exploded perspective view showing the main parts of the above embodiment, Fig. 3 is a front view of the conventional example, and Fig. 4 shows the main parts of the conventional example. FIG. 11...Socket, 12...Rubber socket, 1
3... Spherical bearing, 14... Bearing segment, 1
5... Semi-concave spherical surface, 16... Concave spherical surface, 17... Shift lever, 18... Spherical part.

Claims (1)

[Scope of utility model registration request] A spherical bearing with a concave spherical inner surface, which is made up of a semi-cylindrical bearing segment divided vertically into two, is loaded into the socket along with a rubber socket that holds the spherical bearing. A shift lever support device comprising a spherical part that forms the operating center of the shift lever is inserted and supported within a spherical surface, wherein the radius of curvature in the horizontal direction at an intermediate position of the concave spherical surface of the spherical bearing is the radius of curvature of the spherical part. A support device for a shift lever, characterized in that the radius of curvature in the vertical direction of the concave spherical surface of the spherical bearing is set to be larger than the radius of curvature of the spherical part.