JP6851930B2 - Knob mounting structure - Google Patents

Description

The present invention relates to a knob mounting structure in an operating lever operated for switching transmission gears.

In a vehicle equipped with a manual transmission (MT), for example, a floor shift type shift lever device is provided in the vehicle interior.

The shift lever device includes a shift body fixed to the floor in the vehicle interior and a shift lever supported by the shift body. The shift lever is provided so as to be tiltable in the select direction along the left-right direction of the vehicle and the shift direction along the front-rear direction. When the shift lever is operated in the select direction (select operation), the operating force is transmitted to the manual transmission via the select cable, and the shift and select shaft of the manual transmission moves in the axial direction. When the shift lever is operated in the shift direction (shift operation), the operating force is transmitted to the manual transmission via the shift cable, and the shift and select shaft rotates around the axis. By combining these operations, the meshing state of the gears of the manual transmission is changed, and a shift stage corresponding to the select operation of the shift lever and the shift operation is configured.

A shift knob gripped by the driver is attached to the tip of the shift lever. Various structures have been proposed as the mounting structure.

In one example, the tip of the shift lever is threaded, and the recess formed in the shift knob is formed with a threaded thread and an unthreaded incomplete thread on the back side. ing. Then, after screwing the threaded part of the shift knob into the tip of the shift lever, rotate the shift knob further to screw the tip of the shift lever into the incompletely threaded part of the shift knob, and screw the incompletely threaded part with the screw of the shift lever. By threading, the shift knob is attached to the shift lever without rattling.

Japanese Unexamined Patent Publication No. 2000-16109

However, the amount of screwing of the shift lever into the incompletely threaded portion of the shift knob varies depending on the operator who attaches the shift knob to the shift lever. Therefore, the height position and the rotation position of the shift knob vary.

An object of the present invention is to provide a knob mounting structure capable of suppressing variations in the height position and rotation position of the knob.

In order to achieve the above object, the knob mounting structure according to the present invention is a knob mounting structure for an operation lever operated for switching gears of a transmission, and the operation lever has a round bar shape. , Has a threaded portion on the outer peripheral surface at the tip, and has a groove portion that is recessed with respect to the outer peripheral surface and extends in the circumferential direction at a position spaced apart from the threaded portion. It has a cylindrical outer fitting part that is fitted across the portion between the groove and the groove portion and the portion closer to the base end side of the operating lever than the groove portion, and the outer fitting portion has a mounting groove extending in the circumferential direction. Is formed so as to penetrate in the radial direction, and an annular elastic body having an elastic force in the radial direction is mounted by outer fitting in the mounting groove, and the outer fitting portion is outer-fitted to the operation lever to form the elastic body. Is fitted into the groove and the screw is screwed into the knob, so that the knob is attached to the operating lever.

According to this configuration, the elastic body provided on the knob is fitted into the groove portion of the operating lever, so that the height position of the knob is limited within the movable range of the elastic body in the groove portion. After that, when the knob is rotated and the screw portion is screwed into the knob, the knob is lowered to the base end side of the operating lever, and the elastic body is pressed against the wall surface on the base end side of the groove portion. This positions the knob in the height and rotation directions. Therefore, it is possible to suppress variations in the height position and the rotation position of the knob.

The knob has an incomplete threaded portion into which the threaded portion is screwed, and the threaded portion is screwed into the incomplete threaded portion, and the incomplete threaded portion is threaded by the threaded portion of the threaded portion while the threaded portion is incompletely threaded. The knob may be attached to the operating lever by screwing into.

The operating lever has a cylindrical peripheral wall extending from the wall surface on the distal end side of the groove to the distal end side between the threaded portion and the groove portion, and the peripheral wall is cut out from the edge on the distal end side to the proximal end side. A shaped guide groove is formed and the knob may have a protrusion that fits into the guide groove before the threaded portion of the operating lever reaches the incomplete threaded portion when the knob is mounted on the operating lever.

Thereby, in the process of mounting the knob on the operation lever, the rotation position of the knob with respect to the operation lever can be adjusted to a fixed position.

When a configuration in which the protrusion fits into the guide groove is adopted, the knob has an engaging claw extending from the outer fitting portion to the base end side at a rotation position shifted by a first angle to one side in the rotation direction with respect to the protrusion. However, the operation lever is a portion on the base end side of the groove portion, and is recessed with respect to the outer peripheral surface at a rotation position shifted by a second angle different from the first angle on one side in the rotation direction with respect to the guide groove. It is preferable that the tip of the engaging claw engages with the engaging hole when the threaded portion has a joint hole and is screwed into the incompletely threaded portion by a certain amount.

As a result, the amount of rotation of the knob when the threaded portion is screwed into the incompletely threaded portion is restricted to a constant amount of rotation, so that variations in the height position and rotation position of the knob can be further suppressed.

According to the present invention, it is possible to suppress variations in the height position and the rotation position of the knob.

It is an exploded perspective view of the shift lever device to which the knob mounting structure which concerns on one Embodiment of this invention is applied. It is sectional drawing of the shift lever and the shift knob, and shows the state in which the shift knob is being attached to the shift lever. It is sectional drawing of the shift lever and the shift knob, and shows the state which the attachment of the shift knob to the shift lever is completed.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

<Shift lever device>
FIG. 1 is an exploded perspective view of a shift lever device 1 to which the knob mounting structure according to the embodiment of the present invention is applied.

The shift lever device 1 is mounted on a vehicle together with a manual transmission (not shown) and is operated by the driver to switch the shift stage of the manual transmission. The shift lever device 1 includes a shift body (not shown) fixed to the floor or center console in the vehicle interior, a shift lever 2 supported by the shift body, and a shift knob 3 attached to the tip of the shift lever 2. It has.

The shift lever 2 has a round bar shape and is supported by the shift body so as to be tiltable in the select direction along the left-right direction of the vehicle and the shift direction along the front-rear direction. One end of the shift cable and the select cable is connected to the base end portion of the shift lever 2. The other end of the shift cable is connected to the manual transmission. When the shift lever 2 is operated in the select direction, the operating force is transmitted to the manual transmission via the select cable, and the shift and select shaft of the manual transmission moves in the axial direction. When the shift lever 2 is operated in the shift direction, the operating force is transmitted to the manual transmission via the shift cable, and the shift and select shaft rotates around the axis. By combining these operations, the meshing state of the gears of the manual transmission is changed, and a shift stage corresponding to the select operation of the shift lever 2 and the shift operation is configured.

The shift lever 2 has a threaded portion 21 threaded on the outer peripheral surface at the tip thereof. Further, the shift lever 2 has a groove portion 22 that is recessed with respect to the outer peripheral surface of the shift lever 2 and extends in the circumferential direction at a position spaced apart from the screw portion 21.

A cylindrical peripheral wall 23 extending from the outer peripheral end of the wall surface on the tip end side of the groove portion 22 to the tip end side is provided between the screw portion 21 and the groove portion 22. The peripheral wall 23 is formed with a guide groove 24 formed of a notch that is linearly cut out from the edge on the distal end side to the proximal end side.

Further, the shift lever 2 has an engaging hole which is a portion on the base end side of the groove portion 22 and is recessed with respect to the outer peripheral surface at a rotation position shifted by 45 ° to one side in the circumferential direction with respect to the guide groove 24. 25 is formed.

The shift knob 3 has a cylindrical outer fitting portion 31. A plurality of mounting grooves 32 are formed in the outer fitting portion 31 side by side in the circumferential direction. Each mounting groove 32 extends in the circumferential direction and penetrates the outer fitting portion 31 in the radial direction. A snap ring 33, which is an annular elastic body having an elastic force in the radial direction, is mounted on the mounting groove 32 by outer fitting.

The shift knob 3 has an annular insertion portion 34 on the tip end side of the outer fitting portion 31. The outer diameter of the insertion portion 34 is smaller than the inner diameter of the peripheral wall 23 of the shift lever 2, and the inner diameter of the insertion portion 34 is larger than the outer diameter of the threaded portion 21. On the outer circumference of the insertion portion 34, one rectangular parallelepiped-shaped guide protrusion 35 and three triangular columnar backlash-filling protrusions 36 are formed at equal intervals, that is, at 90 ° intervals.

Further, the shift knob 3 has an incompletely threaded portion 37 further on the tip side than the insertion portion 34. The incompletely threaded portion 37 is a cylindrical recess having a diameter slightly smaller than the outer diameter of the threaded portion 21 of the shift lever 2, and is open to the proximal end side. A cavity 38 through which the threaded portion 21 of the shift lever 2 can be inserted is formed between the insertion portion 34 and the incompletely threaded portion 37, and the inside of the insertion portion 34 and the inside of the incompletely threaded portion 37 are the cavities. It communicates through 38.

Further, the shift knob 3 has an engaging claw 39 extending from the outer fitting portion 31 toward the proximal end side. The engaging claw 39 is located at a rotational position deviated by 315 ° from one side in the circumferential direction with respect to the guide protrusion 35 formed in the insertion portion 34, that is, the engaging hole 25 side with respect to the guide groove 24 of the shift lever 2. ing.

<Installation of shift knob>
FIG. 2A is a cross-sectional view of the shift lever 2 and the shift knob 3, showing a state in which the shift knob 3 is being mounted on the shift lever 2. FIG. 2B is a cross-sectional view of the shift lever 2 and the shift knob 3, showing a state in which the shift knob 3 has been mounted on the shift lever 2.

When the shift knob 3 is attached to the shift lever 2, the outer fitting portion 31 of the shift knob 3 is outerly fitted to the peripheral wall 23 of the shift lever 2 from the tip end side. While the shift knob 3 is being moved to the base end side of the shift lever 2, the rotation position of the shift knob 3 is adjusted so that the guide protrusion 35 of the shift knob 3 fits into the guide groove 24 of the peripheral wall 23, and the guide protrusion 35 guides. It is fitted in the groove 24. When the shift knob 3 is further moved to the base end side of the shift lever 2 with the guide protrusion 35 fitted in the guide groove 24, the three backlash-filling protrusions 36 are pressed against the peripheral wall 23 and crushed, and the shift lever 2 And the shift knob 3 are no longer rattling. As the shift knob 3 moves, as shown in FIG. 2A, the snap ring 33 mounted in the mounting groove 32 of the shift knob 3 fits into the groove 22 of the shift lever 2. Further, the threaded portion 21 of the shift lever 2 reaches the inlet of the incompletely threaded portion 37 of the shift knob 3.

After that, the shift knob 3 is rotated toward the other side in the circumferential direction, that is, toward the engaging claw 39 with respect to the guide protrusion 35, while being pressed toward the base end side of the shift lever 2. As a result, the threaded portion 21 is screwed into the incompletely threaded portion 37, and the threaded portion 21 is screwed into the incompletely threaded portion 37 while the peripheral surface of the incompletely threaded portion 37 is threaded by the screw of the threaded portion 21. .. When the threaded portion 21 is screwed into the incomplete threaded portion 37, the shift knob 3 moves to the base end side of the shift lever 2. With the movement of the shift knob 3, the snap ring 33 is lowered in the groove 22, and the snap ring 33 is pressed against the wall surface on the base end side of the groove 22.

Then, when the shift knob 3 is rotated by 270 °, the tip of the engaging claw 39 of the shift knob 3 faces the engaging hole 25 of the shift lever 2, and as shown in FIG. 2B, the tip of the engaging claw 39 Fits into the engagement hole 25. As a result, further rotation of the shift knob 3 is restricted, and the mounting of the shift knob 3 on the shift lever 2 is completed.

The guide protrusion 35 may be crushed by rubbing against the peripheral wall 23 when the shift knob 3 is rotated, or a groove for allowing the guide protrusion 35 to escape may be formed in the peripheral wall 23.

<Effect>
As described above, when the shift knob 3 is attached to the shift lever 2, the snap ring 33 provided on the shift knob 3 fits into the groove 22 of the shift lever 2, so that the height position of the shift knob 3 is set to the groove 22. It is limited to the movable range of the snap ring 33 inside. After that, when the shift knob 3 is rotated and the threaded portion 21 is screwed into the incomplete threaded portion 37, the shift knob 3 is lowered to the base end side of the shift lever 2, and the snap ring 33 is pressed against the wall surface on the base end side of the groove 22. Be done. As a result, the force required to screw the threaded portion 21 into the incompletely threaded portion 37 is increased, further screwing is restricted, and the shift knob 3 is positioned in the height direction and the rotation direction. Therefore, it is possible to suppress variations in the height position and the rotation position of the shift knob 3.

Further, a guide groove 24 is formed on the peripheral wall 23 of the shift lever 2, and when the shift knob 3 is mounted on the shift lever 2, the guide protrusion 35 formed on the shift knob 3 fits into the guide groove 24. As a result, in the process of mounting the shift knob 3 on the shift lever 2, the rotational position of the shift knob 3 with respect to the shift lever 2 can be adjusted to a fixed position.

Further, the shift knob 3 has an engaging claw 39 at a rotation position shifted by a first angle, for example, 315 ° on one side in the rotation direction with respect to the guide protrusion 35, and the shift lever 2 rotates with respect to the guide groove 24. When an engaging hole 25 is provided on one side of the direction at a second angle different from the first angle, for example, a rotation position shifted by 45 °, and the threaded portion 21 is screwed into the incomplete threaded portion 37 by a certain amount, The tip of the engaging claw 39 engages with the engaging hole 25. As a result, the amount of rotation of the shift knob 3 when the screw portion 21 is screwed into the incompletely threaded portion 37 is restricted to a constant amount of rotation, so that variations in the height position and rotation position of the shift knob 3 can be further suppressed. it can.

<Modification example>
Although one embodiment of the present invention has been described above, the present invention can also be implemented in other embodiments.

For example, 315 ° and 45 ° are exemplified as the first angle which is the amount of deviation of the engaging claw 39 with respect to the guide protrusion 35 and the second angle which is the amount of deviation of the engaging hole 25 with respect to the guide groove 24. The second angle is not limited to the specific numerical value, and may be appropriately set according to the amount of screwing of the threaded portion 21 into the incompletely threaded portion 37.

Further, in the above-described embodiment, the structure in which the shift knob 3 is provided with the incompletely threaded portion 37 and the threaded portion 21 of the shift lever 2 is screwed into the incompletely threaded portion 37 while being threaded is taken up. Instead of 37, a threaded portion that has already been threaded may be provided, and the threaded portion 21 of the shift lever 2 may be screwed into the threaded portion. However, in the former structure, the shift knob 3 can be attached to the shift lever 2 without rattling as compared with the latter structure.

In addition, various design changes can be made to the above-mentioned configuration within the scope of the matters described in the claims.

2: Shift lever (operation lever)
3: Shift knob 21: Threaded part 22: Groove part 31: Outer fitting part 32: Mounting groove 33: Snap ring (elastic body)
37: Incomplete threaded part

Claims (1)

It is a mounting structure of a knob in the operation lever operated for switching the transmission gear.
The operating lever has a round bar shape, has a threaded portion on the outer peripheral surface at the tip, and is recessed with respect to the outer peripheral surface at a position spaced from the threaded portion and extends in the circumferential direction. Have,
The knob has a cylindrical outer fitting portion that is fitted so as to straddle a portion of the operating lever between the screw portion and the groove portion and a portion of the operating lever that is closer to the base end side of the operating lever than the groove portion. And
A mounting groove extending in the circumferential direction is formed in the outer fitting portion so as to penetrate in the radial direction.
An annular elastic body having an elastic force in the radial direction is fitted in the mounting groove by outer fitting.
The knob is mounted on the operating lever by fitting the outer fitting portion to the operating lever, fitting the elastic body into the groove portion, and screwing the screw portion into the knob. Construction.

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