JPH0575554U - Leaf spring type detent structure - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent breakage of leaf springs and improve durability. [Structure] A pad plate 11 for supporting the root portion 5a of the plate spring 5 is provided, and when the plate spring 5 swings, the pad plate 11 supports bending points to disperse stress and prevent breakage of the plate spring 5 for durability. To improve the sex.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a leaf spring type detent structure for an automatic vehicle.

[0002]

[Prior Art]

 A conventional leaf spring type detent structure will be described with reference to FIGS. 2 and 3. FIG. 2 shows a schematic structure of a conventional leaf spring type detent structure, and FIG. 3 shows a view taken along the arrow III in FIG.

In FIG. 2, 1 is a transmission case, 2 is a detent plate, and 3 is a shift lever connected to the detent plate 2. A recess 4 is formed in the detent plate 2 according to the shift speed.

In FIGS. 2 and 3, 5 is a leaf spring whose one end is fixed to the transmission case 1, and 6 is attached to the tip of the leaf spring 5 and fitted into the recess 4 by the biasing force of the leaf spring 5. Rollers 7 are brackets for preventing the leaf spring 5 from rotating.

The shift lever 3 and the detent plate 2 are connected to each other, and the detent plate 2 rotates according to the operation of the shift lever 3. When the shift lever 3 is operated, the roller 6 rolls over the concave portion 4 against the biasing force of the leaf spring 5 to get over the concave portion 4 and is fitted into the predetermined concave portion 4. As a result, the driver feels the shift due to the change in the operating force of the shift lever 3.

[0006]

[Problems to be solved by the device]

 In the conventional leaf spring type detent structure, each time the roller 6 gets over the recess 4 of the detent plate 2, the leaf spring 5 swings, and the root portion 5a is repeatedly concentrated and bent. Therefore, the leaf spring 5 may be broken at the root portion 5a.

[0007]

Means for Solving the Problems The structure of the present invention for solving the above problems is configured such that a detent plate connected to a shift lever, a recess formed in the detent plate according to a shift speed, and a recess are fitted in the detent plate. In a leaf spring type detent structure consisting of a leaf spring having a roller at the tip and urging the roller toward the recess side, a detent plate that supports the bending point of the leaf spring when the roller gets over the recess during gear shifting is provided. Characterize.

[0008]

[Action]

 When the leaf spring swings when the roller moves over the recess, the contact plate supports the position of the bending point according to the amount of swing, eliminating stress concentration at the bending point.

[0009]

【Example】

 FIG. 1 shows a schematic structure of a leaf spring type detent structure according to an embodiment of the present invention. The same members as those shown in FIGS. 2 and 3 are designated by the same reference numerals, and duplicate description will be omitted.

A contact plate 11 is provided on the root portion 5 a of the leaf spring 5, and the root portion 5 a when the leaf spring 5 swings is supported by the contact plate 11. On the other hand, one end of the leaf spring 5 is fixed to the bracket 7 by a rivet 12, and the rivet 12 is provided in a direction parallel to the swinging direction of the leaf spring 5.

When the roller 6 rolls over the concave portion 4 against the biasing force of the leaf spring 5 and rides over it by the operation of the shift lever 3, the leaf spring 5 swings with the root portion 5a as a bending point. When the leaf spring 5 swings, the root portion 5a is supported by the abutment plate 11, so that the position of the bending point is supported by the abutment plate 11 according to the amount of the oscillation. As a result, the stress at the bending point of the leaf spring 5 is dispersed.

Further, since the leaf spring 5 is fixed by the rivet 12 in parallel with the swinging direction, the mounting position is stable and the reliability is improved even if the swinging is repeated.

In the above embodiment, the case where the detent plate 2 is attached to the transmission case 1 side has been described, but the present application is applicable even if the detent plate is attached to the shift lever 3 side. is there.

[0014]

[Effect of the device]

 Since the leaf spring type detent structure of the present invention includes the contact plate that supports the bending point of the leaf spring, the bending point is supported by the contact plate and the stress is dispersed when the leaf spring swings. As a result, breakage of the leaf spring is prevented and durability can be improved.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a leaf spring type detent structure according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a conventional leaf spring type detent structure.

FIG. 3 is a view on arrow III in FIG.

[Explanation of symbols]

 1 transmission case 2 detent plate 3 shift lever 4 recess 5 leaf spring 5a root part 6 roller 7 bracket 11 backing plate 12 rivet

Claims (1)

[Scope of utility model registration request] 1. A detent plate connected to a shift lever, a recess formed in the detent plate according to a shift speed, and a leaf spring having a roller fitted to the recess at the tip and biasing the roller toward the recess. In the leaf spring type detent structure, the leaf spring type detent structure is provided with a contact plate that supports a bending point of the leaf spring when the roller gets over the concave portion during a gear shift operation.