JPH0645129U - Bracket for tubular anti-vibration bush - Google Patents

Abstract

(57) [Summary] [Purpose] The production is simple and the vibration-proof bushing is held securely. [Structure] A holding opening 41 for press-fitting and holding the outer cylinder 2 and a leg portion 42 fixed to a base body are press-molded in a pair of plate bodies 4A and 4B in the same shape. Each plate 4 has left and right legs 4.
The heights of the plates 2 and 43 are different by the plate thickness d, and when the plates 4 are faced at a constant interval, the left and right leg portions 42 and 43 of the plates 4A and 4B are different from each other. Legs 42,4
3, the holding openings 41 of the plates 4A and 4B are concentrically opposed to each other. Since it is produced easily and inexpensively by press molding with the same mold and there is no need to weld in the vicinity of the holding opening 41, the holding opening is not deformed and the vibration-proof bushing is securely held.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bracket for holding and fixing a cylindrical vibration-proof bush, and particularly to improving the structure of a bracket that is easy to manufacture.

[0002]

[Prior art]

 FIG. 5 shows an example of a conventional bracket. The bracket is composed of a metal tubular body 51 that constitutes a holding portion and a leg portion 52 joined to the lower half surface of the tubular body 51. The leg portion 52 is formed by bending a plate material in a U-shaped section that faces upward, and then forming an arc shape thereof. The top surface, which is molded into, is fixed to the peripheral surface of the cylinder by arc welding.

The vibration-proof bushing is formed by holding the inner cylinder 1 through the center of a vibration-proof rubber body 3 provided across the outer cylinder 2. The outer cylinder 2 is press-fitted and fixed in the holding portion 51. .

[0004]

[Problems to be Solved by the Invention]

 By the way, in the above-mentioned conventional structure, since the bracket holding portion 51 and the leg portion 52 are separately produced in advance and welded and assembled, it requires labor such as parts management and accurate positioning, resulting in cost increase. There was an unavoidable problem. In addition, the opening of the holding portion 51 into which the outer cylinder 2 of the anti-vibration bush is press-fitted needs to have a small inner diameter error in order to achieve smooth press-fitting work and reliable holding. Occasionally, the holding portion 51 may be distorted and the opening may be deformed.

The present invention solves such a problem, and an object of the present invention is to provide a bracket for a cylindrical vibration-isolating bush that is easy to manufacture and reliably holds the vibration-isolating bush.

[0006]

[Means for Solving the Problems]

 The structure of the present invention will be described. A bracket 4 of a cylindrical vibration-proof bush in which an anti-vibration rubber body 3 is jointly arranged between an inner cylinder 1 and an outer cylinder 2, and is a holding member for press-fitting and holding the outer cylinder 2. The opening 41 and the left and right leg portions 42 fixed to the base body are press-molded on the pair of plate bodies 4 in the same shape, and each plate body 4 forms the left and right leg portions 42 and 43 in different shapes. When these plate bodies 4 are opposed to each other at regular intervals, the left and right leg portions 42, 43 of each plate body 4A, 4B are positioned so as to be in contact with the leg portions 42, 43 of the other plate body, respectively. The holding openings 41 of 4A and 4B are set so as to concentrically face each other.

[0007]

[Action]

 The bracket having the above structure is easily manufactured by press molding with the same mold, and since it is not necessary to weld and fix the legs along the holding opening 41, the holding opening 41 is not deformed. Therefore, the vibration-proof bush is reliably held.

[0008]

Embodiment 1 In FIG. 1, a bracket is composed of a pair of plate bodies 4A and 4B, and each plate body 4A and 4B is formed in the same shape by press molding. That is, each of the plate bodies 4A and 4B is composed of an upper half portion of a semicircle and a lower half portion of a substantially rectangular shape, and a circular holding opening 41 is formed at the center of the upper half portion by punching, and the peripheral edge thereof is burring. The wall portion 411 is projected from the plate surface by processing. Rectangular legs 42 and 43 are formed at the left and right positions in the lower half of the plates 4A and 4B, and are bent at a right angle and extend horizontally in the same direction as the wall 411.

The vibration-proof bushing is formed by joining a vibration-proof rubber body 3 in which a thick-walled small-diameter inner cylinder 1 is embedded in the center of a thin-walled large-diameter outer-tube 2 and positioned in the vibration input direction. A stopper rubber 31 is provided on the inner circumference of the 2. The outer cylinder 2 is formed of an aluminum material that does not require painting.

Mounting holes 421 (only one is shown) to the base body are provided in the left and right leg portions 42 and 43 of the plate bodies 4A and 4B, and the nuts are formed on the upper surface of one leg portion 43 so as to match the mounting holes. 44 is fixed. The left and right leg portions 42 and 43 are different in height, and the lower surface of the leg portion 43 is higher than that of the leg portion 42 by a plate thickness d.

The plate bodies 4A and 4B are faced to each other as shown in the drawing, and the leg portions 43 of the plate bodies 4A and 4B are overlapped with each other on the leg portions 42 of the other plate bodies 4A and 4B, and their mounting holes are formed. When both legs 42, 43 are joined by coincident spot welding (FIG. 2), the lower surfaces of the legs 43 of both plates 4A, 4B are brought to the same level and the holding openings 41 are positioned concentrically.

Then, as shown in FIG. 3, when the outer cylinder 2 of the vibration-proof bush is press-fitted into the holding openings 41 of the two plate bodies 4A and 4B located concentrically, the outer cylinder 2 has wall portions 411 at both ends. It is fixed by pressing against.

As described above, the pair of plate bodies 4A and 4B press-molded by the same die are combined to form a bracket, and an expensive pipe is not used for the holding portion as in the conventional case, which is excellent in economical efficiency. Further, since long welding of the leg portion along the holding opening 41 is not required, the manufacturing is simple, the holding opening 41 is not distorted, and the holding opening can be surely positioned concentrically. Reliable holding is possible.

Further, in this embodiment, since the outer cylinder is made of an aluminum material, painting is unnecessary, the weight is reduced, and the natural frequency of the bracket is increased. Is reduced.

[0015]

[Embodiment 2] In FIG. 4, in each plate body 4A, 4B, one leg portion 43 provided with a nut 44 extends in the horizontal direction and the tip bends further upward. 31 is stamped and formed. The other leg 42 is formed by extending the plate surfaces of the plate bodies 4A and 4B slightly downward, and the plate surface is provided with a protrusion 421 for fitting and positioning with the recess 431 by punching. The other structure is the same as that of the first embodiment.

However, if both plate bodies 4A and 4B are faced to each other as shown in the drawing and the projections 431 and the recesses 421 are positioned to weld the plate bodies 4A and 4B together, both holding openings 4 1 can be more surely concentric. Can be located at.

[0017]

[Effect of device]

 As described above, the bracket of the present invention is easy and inexpensive to manufacture, and can securely hold the vibration-proof bush.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a bracket showing an embodiment of the present invention.

FIG. 2 is a perspective view of a bracket.

FIG. 3 is a perspective view of a bracket in which a vibration-proof bush is press-fitted.

FIG. 4 is an exploded perspective view of a bracket showing another embodiment of the present invention.

FIG. 5 is a perspective view of a conventional bracket.

[Explanation of symbols]

 1 Inner cylinder 2 Outer cylinder 3 Anti-vibration rubber body 4A, 4B Plate body 41 Holding opening 42, 43 Leg part

Front page continuation (72) Inventor Tsuneichi Furuya No. 1 Nagahata, Ochiai, Kasuga-cho, Nishikasugai-gun, Aichi Toyoda Gosei Co., Ltd. Synthetic Co., Ltd. (72) Inventor Eiji Ikeda 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Co., Ltd. (72) Inventor Tetsuya Nakayama 1 Toyota Town, Toyota City, Aichi Toyota Motor Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A bracket for a cylindrical vibration-proof bushing in which a vibration-proof rubber body is jointly arranged between an inner cylinder and an outer cylinder, the holding opening for press-fitting and holding the outer cylinder, and the left and right fixed to the base body. The legs and the pair of plate members are press-formed with the same shape, and each plate member has the left and right legs with different shapes,
When facing these plates at regular intervals, the left and right legs of each plate are positioned in contact with the legs of the other plates, and the holding openings of each plate are concentrically opposed. Bracket of tubular vibration-proof bushing characterized by being made.