JP2008260407A - Shift lever device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shift lever device capable of preventing any play of a shift lever with components of small number. <P>SOLUTION: The shift lever device 1 has a detent mechanism 20 for positioning an operation lever 10 in the shift direction. The detent mechanism 20 has a detent body 21 including a detent ball 22 of less friction, an arm part 23 and a detent plate 24. The arm part 23 is connected to the operation lever 10, and fix the detent body 21 so that the detent ball 22 is directed in the direction orthogonal to the spherical locus around a supporting point 11 of the operation lever 10. The detent plate 24 is abutted on the detent ball 22 and has groove parts 25-27 formed therein. The groove parts 25-27 are formed in a plurality of arc shape provided substantially parallel to the moving direction of the detent ball 22 when operating the operation lever 10 in the select direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a shift lever device.

  In general, a manual transmission transmission operation device is configured to move a shift fork in a transmission case and change the meshing of a transmission gear by operating an operation lever of a transmission operation device disposed on a passenger compartment floor, for example. It is configured.

  In manual transmissions that use push-pull cable shift, the invalid stroke due to the gap between the cable inner wire and outer sleeve expands due to the lever ratio and appears on the shift knob as "backlash". It becomes a deteriorating factor of the ring. The shift lever select (left and right) operating direction requires that the shift lever be positively returned (held) to the neutral (neutral) position. In addition, an elastic body such as a neutral holding spring is provided so as to be urged to the neutral position, so that the backlash due to the cable hardly appears on the shift knob.

  However, in the shift (front / rear) operation direction, when the lever is urged in the neutral direction, the gear is released, so an elastic body such as a spring that urges the shift lever in the neutral direction can be used in the same way as in the select direction. Absent.

In order to suppress the play in the shift operation direction in this way, generally, efforts are made to reduce the play by optimizing cable routing (straight routing) or the like. However, there is a limit to the suppression of the play by this measure, and it cannot cope with the increase of the play due to the cable extension with the passage of time. As a countermeasure against such a problem, there has been proposed a structure in which a detent mechanism is provided in the shift lever device and the lever itself regulates the operation in the shift direction (see Patent Document 1 and Patent Document 2).
Japanese Utility Model Publication No. 3-88060 Japanese Patent Laid-Open No. 4-266662

  However, since the shift lever device of the manual transmission is operated in two directions of the shift direction and the select direction, the detent mechanism for positioning in the shift direction is a link or slide mechanism for absorbing the operation in the select direction, etc. Therefore, the number of parts increases and the structure becomes complicated.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a shift lever device capable of preventing rattling of the shift lever with a small number of parts.

  In order to solve the above problems, a shift lever device according to the present invention includes an operation lever to which an operation knob operated in a shift direction and a select direction is connected, and a detent mechanism that performs positioning in the shift direction with respect to the operation lever. The detent mechanism is connected to the operation lever, and the detent body is supported in a spherical shape with a fulcrum of the operation lever as a center. The detent ball is in contact with an arm portion that fixes the detent main body so as to face in a direction orthogonal to the locus, and is provided substantially in parallel with the direction in which the detent ball moves when the operation lever is operated in the select direction. And a plate on which a plurality of arc-shaped groove portions are formed.

  According to this configuration, the shift lever device can be prevented from wobbling due to the shift (front-rear) direction detent provided on the operation lever, has no adverse effect during selection, and is inexpensive with a small number of parts. Can provide.

  The detent body includes a biasing member that biases the detent ball against the plate.

  According to the present invention, it is possible to provide a shift lever device capable of preventing the shift lever from rattling with a small number of parts.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, exemplary embodiments of the invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view of a main part for explaining a basic configuration of a shift lever device 1 for a manual transmission according to an embodiment of the present invention.

  The shift lever device 1 is a cable-type shift link mechanism, and the movement on the operation knob 17 is controlled in the shift direction and the select direction by the two arms 13 and 14 protruding from the shift linkage fulcrum (spherical body) 11 of the manual transmission. This is a mechanism for shifting the transmission by separating the movement in the two directions and pushing and pulling the shift cable 15 and the select cable 16.

  The shift lever device 1 includes a spherical fulcrum 11 that supports the operation lever 10 so as to be swingable back and forth, and right and left, and a spherical ball pair 12 provided below the fulcrum 11, and the fulcrum 11 is connected via a linkage mechanism or the like. Connected to a manual transmission.

  The operation lever 10 is provided above the fulcrum 11 and is operated in the shift direction and the selection direction. The operation lever 10 is provided with an operation knob 17 to which forward shift positions (1st to 6th speed) and reverse positions (R position) are attached. I have. By moving the operation knob 17 in the Y direction and tilting the operation lever 10 in the select direction that is the left-right direction with the fulcrum 11 as the center of rotation, the 1st speed-2nd gear select position, the 3rd speed-4th speed select position, 5 1st-2nd gear, 3rd-4th gear, 5th gear-6, which are provided in the manual transmission through a linkage mechanism connected to the fulcrum 11 with the speed-6th gear select position and reverse select position obtained. The speed and reverse select cable 16 is pulled.

  Further, by moving the operation knob 17 in the X direction from each select position and tilting the operation lever 10 in the forward / backward shift direction, the corresponding shift cable 15 is pulled to obtain a desired shift position.

  2A and 2B are diagrams for explaining the detent mechanism. FIG. 2A is a front view of the shift lever device, and FIG. 2B is a side view (partially cross-sectional view). The dotted line (b) in the figure shows a state where the operation knob 17 is shifted forward. In FIG. 1, the detent mechanism 20 is omitted in order to explain the basic configuration of the shift lever device 1.

  As shown in FIG. 2, the shift lever device 1 is provided with a detent mechanism 20 that positions the operation lever 10 in the shift direction. The detent mechanism 20 includes a detent main body 21 including a detent ball 22 with less friction, an arm portion 23 and a detent plate 24. The detent body 21 accommodates the detent ball 22 in the tubular body 21 so as to be movable in the tubular detent body 21, and accommodates an elastic member (not shown) such as a spiral spring, and biases the detent ball 22. It is configured as follows.

  The arm portion 23 is connected to the operation lever 10 so that the detent ball 22 can be moved in the direction in which the arm 23 is urged and the urging direction by the elastic body is perpendicular to the spherical locus centering on the fulcrum 11 of the operation lever 10. The detent body 21 is fixed to the operation lever 10.

  The detent plate 24 is fixed to the housing of the shift lever device 1 main body. The detent plate 24 is formed with grooves 25 to 27 having a shape in which a part of a substantially spherical surface is cut out along the locus of the detent ball 22 while the detent ball 22 contacts. The grooves 25 to 27 are formed in a plurality of arcs provided substantially parallel to the direction in which the detent ball 22 moves when the operation lever 10 is operated in the select direction. The detent plate 24 is formed by pressing a metal plate that is relatively resistant to wear or the like, or cutting a lump of metal, and further using a resin that is resistant to wear such as nylon.

  The detent ball 22 can freely move in the groove portions 25 to 27, but when the detent ball 22 exits the groove portions 25 to 27, the detent ball 22 is pushed into the detent ball main body 21 against the urging force of the spiral spring. Further, when the detent ball 22 enters the grooves 25 to 27 again, it is pushed out from the detent body 21 by a spring.

  In the present embodiment, only the position restriction in the shift direction is intended. Therefore, the grooves 25 to 27 are provided in parallel with the selection direction and the selection direction is not restricted by the detent ball 22, but the shift lever device 1 or Since movement in the select direction other than the neutral position is restricted by the transmission operated by the shift lever device, the select operation cannot be performed when the operation lever 10 is tilted forward or backward. It has become. On the other hand, providing the grooves 25 to 27 in the select direction eliminates the need for position adjustment in the select direction.

  According to the above-described embodiment, the shift detent mechanism 20 provided on the operation lever 10 can suppress the wobbling of the operation lever 10, does not adversely affect the selection, and is an inexpensive shift with a small number of parts. A lever device can be provided.

  The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the gist of the present invention described in the claims. It can be changed.

It is a principal part perspective view for demonstrating the fundamental structure of the shift lever apparatus of the manual transmission which concerns on embodiment of this invention. It is a figure for demonstrating a detent mechanism, the figure (a) is a front view of a shift lever apparatus, and the figure (b) is a side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Shift lever apparatus 10 ... Operation lever 11 ... Shift linkage fulcrum of manual transmission 12 ... Ball pair 13, 14 ... Arm 15 ... Shift cable 16 ... Select cable 17. ..Operation knob 20 ... Detent mechanism 21 ... Detent body 22 ... Detent ball 23 ... Arm part 24 ... Detent plate 25-27 ... Groove part

Claims (2)

An operation lever to which an operation knob operated in the shift direction and the selection direction is connected, and a detent mechanism for positioning in the shift direction with respect to the operation lever;
The detent mechanism includes a detent body that supports a detent ball so as to be movable in one axial direction;
An arm that is connected to the operation lever and fixes the detent body so that a movable direction of the detent ball is oriented in a direction perpendicular to a spherical locus centering on a fulcrum of the operation lever;
A plate on which the detent ball abuts and a plurality of arc-shaped grooves provided substantially parallel to a direction in which the detent ball moves when the operation lever is operated in the select direction;
A shift lever device characterized by comprising: The shift lever device according to claim 1, wherein the detent main body includes a biasing member that biases the detent ball against the plate.

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