JPH0684044U - Anti-vibration bush - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the shift feeling in the select direction x of an anti-vibration bush that elastically connects a shift lever and an arm on the transmission side of a manual transmission for an automobile. [Structure] Inward projections 7 and 8 provided on the outer sleeve 2 and recesses 9 and 1 provided on the inner sleeve 1.
The stoppers 5, which are made of a combination of 0 and are arranged along the shift direction y, restrict the relative displacement of the inner sleeve 1 and the outer sleeve 2 in the select direction x.
6 is provided to prevent backlash during operation.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of an anti-vibration bush. The anti-vibration bush of the present invention is mainly used in a manual transmission for an automobile to elastically connect the shift lever and the transmission side arm.

[0002]

[Prior art]

 In a manual transmission for an automobile as shown in FIG. 5, a shift lever 51 operated by an occupant and a transmission-side arm 52 that is interlocked with the shift lever 51 are elastically connected via a vibration-proof bush 53. (See Japanese Utility Model Laid-Open No. 63-119124).

The shift lever 51 has its large spherical portion 51a rotatably supported by a socket 54 on the vehicle body side and swings around the large spherical portion 51a as a fulcrum, and a small spherical portion provided at an action point at its lower end. An arm 52 is elastically connected to 51b via a spherical bush 55 and a vibration-proof bush 53. The vibration-proof bush 53 connects the inner sleeve 56 fitted on the outer peripheral side of the spherical bush 55, the outer sleeve 57 fitted on the inner peripheral side of the fitting portion 52a of the arm 52, and both sleeves 56, 57. The elastic body 58 made of rubber-like elastic material absorbs the impact at the time of shift and the vibration on the mission side by the elasticity of the elastic body 58 so as not to be transmitted to the passengers' hands. To work.

[0004]

[Problems to be solved by the device]

 In the vibration-proof bush 53 of this type, the vibration-absorbing action utilizing the elasticity of the elastic body 58 is required when the shift lever 51 is swung in the shift direction, and the select in the direction orthogonal to the shift direction is required. Regarding the direction, it is desirable that the inner sleeve 56 and the outer sleeve 57 are not largely displaced relative to each other. With respect to this point, however, in the above-mentioned conventional technique, the relative displacement between the inner sleeve 56 and the outer sleeve 57 in the select direction is large, and this relative displacement appears as backlash during operation, resulting in a poor shift feeling. There is.

[0005]

[Means for Solving the Problems]

 In view of the above points, the present invention has been devised to solve the above-mentioned problems in the prior art. A plurality of elastic bodies connecting the inner sleeve and the outer sleeve, and a combination of an inward convex portion provided on the outer sleeve and a concave portion provided on the inner sleeve. Is provided, and a vibration-isolating bush including a stopper that restricts relative displacement of the inner sleeve and the outer sleeve in the select direction is provided.

[0006]

[Action]

 The anti-vibration bush of the present invention having the above structure has a stopper, and this stopper limits the relative displacement of the inner sleeve and the outer sleeve in the select direction. Further, since the stopper is composed of the combination of the convex portion provided on the outer sleeve and the concave portion provided on the inner sleeve, the number of parts does not increase even if the stopper is provided.

[0007]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 to 4, a pair of inner sleeves 1 and an outer sleeve 2 arranged on the outer peripheral side of the inner sleeve 1 are rubber-shaped and arranged in the select direction (arrow x). It is elastically connected via elastic bodies 3 and 4 made of elastic material, and a pair of stoppers 5 and 6 are arranged along the shift direction (arrow y) to select the direction (arrow x). Limited to relative displacement. Each of the stoppers 5 and 6 is composed of a combination of convex portions 7 and 8 in which a part of the peripheral wall of the outer sleeve 2 is projected inward and concave portions 9 and 10 formed in the inner sleeve 1, respectively. The relative displacement of the outer sleeve 2 in the select direction (arrow x) is limited to a certain amount a. Therefore, according to this structure, the relative displacement of the inner sleeve 1 and the outer sleeve 2 in the select direction (arrow x) is limited to the predetermined amount a, and it is possible to prevent backlash during operation. With this, the shift feeling can be improved.

Since the stoppers 5 and 6 are composed of the projections 7 and 8 provided on the outer sleeve 2 and the recesses 9 and 10 provided on the inner sleeve 1, the stoppers 5 and 6 are provided. However, the number of parts does not increase and the manufacturing cost does not increase significantly.

[0010]

[Effect of device]

 The present invention has the following effects. That is, the stopper restricts the relative displacement of the inner sleeve and the outer sleeve in the select direction to a predetermined amount and prevents rattling at the time of operation, so that the shift feeling in the same direction can be improved. . Also, since the stopper is made up of a combination of a convex portion provided on the outer sleeve and a concave portion provided on the inner sleeve, the number of parts does not increase even if the stopper is provided, and the manufacturing cost increases significantly. I don't.

[Brief description of drawings]

FIG. 1 is a front view of an anti-vibration bush according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a view in the direction of arrow B in FIG.

FIG. 4 is a sectional view taken along the line CC in FIG.

FIG. 5 is an explanatory view of a manual transmission equipped with an anti-vibration bush according to a conventional example.

[Explanation of symbols]

 1 Inner sleeve 2 Outer sleeve 3,4 Elastic body 5,6 Stopper 7,8 Convex part 9,10 Recessed part x Select direction y Shift direction

Claims (1)

[Scope of utility model registration request] 1. An elastic body (3) having a plurality of inner sleeves (1), outer sleeves (2), and a plurality of inner sleeves (1) and outer sleeves (2) arranged along the select direction (x). ) (4) and a combination of inward projections (7) (8) provided on the outer sleeve (2) and recesses (9) (10) provided on the inner sleeve (1). , Stoppers (5) arranged in a plurality along the shift direction (y) to restrict relative displacement of the inner sleeve (1) and the outer sleeve (2) in the select direction (x).
Anti-vibration bush consisting of (6).