JPH0444412Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a dynamic damper device for a leaf spring suspended in a vehicle.

[Prior art]

Typical examples of conventional dynamic dampers for leaf springs are shown in Figures 5 and 6.
1 to the support bracket 13 via rubber 12, 12.
The weight 11 is elastically supported by a shaft 14, etc. to prevent it from falling off, and even if the rubber 12 cracks, there is no risk of the weight 11 falling outside and causing a serious accident. However, it has some drawbacks such as high manufacturing cost due to its structure and generation of abnormal noise.The one shown in Fig. 6 (Utility Model Application Publication No. 56-157441) has a cross-section omitted. A leaf 17 of a leaf spring is supported via an elastic body 15 such as rubber fixed to a horizontal portion of a U-shaped weight 16, and a bolt is inserted between both sides of the weight 16 having a U-shaped cross section above the leaf 17. 18, and has the advantage of preventing the dynamic damper from falling off even if the elastic body breaks, but if the elastic body breaks, the weight will move in the longitudinal direction of the leaf spring. In addition, there are problems such as the vulcanization mold becomes large and the manufacturing cost increases.

[Problem that the invention attempts to solve]

The present invention aims to solve the problems and difficulties of the conventional device described above, and aims to prevent the weight from falling off and protect the dynamic damper.
Furthermore, it is an object of the present invention to obtain a dynamic damper that also has the effect of an impact damper.

[Means for solving problems]

As mentioned above, the present invention aims to provide a dynamic damper for vehicle suspension that prevents weights from falling off, protects the dynamic damper, and also has the effect of an impact damper. A weight support member, in which a weight is fixed between both side plate portions of the member via an elastic body, is mounted in the same direction on a damper mounting member that is attached to a leaf spring and has a substantially U-shaped cross section, and is mounted in the same direction. for vehicle suspension, characterized in that the opening of the weight portion formed by the above is covered by a weight protection member disposed in the opening so that the gap between the openings is equal to or less than the outer dimensions of the weight. This is a dynamic damper device.

[Effect]

In the present invention, a weight having a substantially U-shaped cross section is provided with a weight that is entirely covered with an elastic material such as rubber through an elastic material such as rubber, on the inside of both side plates of a weight support member having a U-shaped cross section. The weight protection member is fixed to the horizontal portion of the support member with a gap therebetween, and has both side plates that are out of phase by 90 degrees from the side plates of the weight support member having a substantially U-shaped cross section. Therefore, the both side plates of the weight support member and the both side plates of the weight protection member surround the weight that is supported and fixed to the both side plates of the weight support member via elastic bodies, so that the weight is not supported while the car is running. Not only is there no risk of the weight falling off even if the fixed elastic material such as rubber cracks and breaks, but as mentioned above, the weight supported and fixed to both side plates of the weight support member is Since the support member and the weight protection member are surrounded in a box-like manner by the respective side plates, there is no risk of damage to the elastic body by flying stones from the outside while the car is running. Since the weight is covered with an elastic body such as rubber, even if the elastic body supporting the weight is damaged, no hitting sound is generated.

〔Example〕

The invention will be explained by means of embodiments shown in the drawings.
FIG. 1 shows a first embodiment of the present invention, in which 1 indicates a horizontal portion 1a and a side plate portion 1 having both ends thereof raised up.
b and 1b are weight support members formed into a substantially U-shaped cross section, and 2 is an elastic member 3 made entirely of rubber or the like.
The weight is a weight covered with elastic material such as rubber, which is placed on the inside of both side plate parts 1b, 1b of the weight support member 1 with a slight gap from the horizontal part 1a of the weight support member 1. It is fixed via the body 4.

Reference numeral 5 designates a leaf constituting a leaf spring, and reference numeral 6 designates a damper mounting member formed into a substantially U-shaped cross section by a horizontal portion 6a and side plate portions 6b, 6b with raised left and right ends thereof. Both front and rear ends of the horizontal portion 6a of the damper mounting member 6 are made to hang downward to form side plate portions 7b, 7b, and the horizontal portion 6a of the damper mounting member 6 and the side plate portions 7b, 7b form a substantially U-shaped cross section facing downward. A weight protection member 7 is formed. Therefore, the side plate portions 6b, 6b of the damper mounting member 6 and the side plate portions 7b, 7b of the weight protection member 7 have a phase of 90°,
In addition, the damper mounting member 6 having a generally upward U-shaped cross section and the weight protection member 7 having a generally downward U-shaped cross section are constructed as one unit having a U-shaped horizontal portion 6a in common.

The horizontal portion 6a of the damper mounting member 6 is fixed to the lower surface of the leaf 5 of the leaf spring with bolts or rivets 8,
Further, a weight support member 1 having a substantially U-shaped cross section to which the weight 2 is elastically fixed is attached to a damper mounting member 6 having a substantially U-shaped cross-section fixed to the lower part of the leaf 5 of the leaf spring, with the upper ends of both of them being attached. The damper fixture 6 and the weight support member 1 are fastened together with bolts 9 or the like at their upper ends.

In the first embodiment configured as described above, both side plate portions 7b, 7 are suspended below the weight protection member 7, which is integrally configured with the damper mounting member 6 fixed to the leaf 5 of the leaf spring.
As described above, b has a phase of 90° with both side plate portions 6b, 6b of the damper mounting member 6, and therefore, it is attached to the damper mounting member 6 in the same direction as the damper mounting member 6. Since both side plate parts 1b, 1b of the weight support member which is externally mounted and both side plate parts 7b, 7b hanging down below the weight protection member 7 have a phase of 90 degrees, the weight support member 1 The weight 2 fixed to the inner surface of the both side plate parts 1b, 1b is connected to the both side plate parts 7 which are suspended below the both side plate parts 1b, 1b and the weight protection member 7.
b, 7b, there is a space between the side plates 7b, 7b of the protection member 7 and the side plate parts 1b, 1b of the weight support member 1 to prevent the weight from falling off. Therefore, a gap smaller than the outer dimensions of the weight is formed, and the weight supporting member 1 described above also serves as a protecting member for the weight.

In the second embodiment shown in FIG. 2, the damper mounting member 6 and the weight protection member 7, which were integrated in the first embodiment, are constructed separately, and the other structure is the same as that of the first embodiment. It is. That is, a horizontal portion 6a' and a side plate portion 6b' with both ends thereof raised,
6b' and a damper mounting member 6' having a substantially U-shaped cross-section; a weight protection member 7 having a substantially U-shaped cross-section with a horizontal portion 7a' and side plate portions 7b' and 7b' with raised ends thereof; ', both side plate parts 6b', 6b' of the damper mounting member 6' and both side plate parts 7b', 7b' of the weight protection member 7' have a phase of 90°,
And the horizontal part 6 of both is opposite to each other.
A' and 7a' are placed back to back and fixed to the leaf 5 of the leaf spring with a bolt 8 or the like.

In the third embodiment shown in FIG. 3, the weight protection member is integrated with the weight support member, and the same components as in the first embodiment will be described with the same reference numerals. A weight support member 1 having a substantially U-shaped cross section is formed by the side plate portions 1b, 1b whose left and right ends are raised, and both front and rear ends of the horizontal portion 1a of the weight support member 1 are connected to the side plate portions 1b, 1b.
1b, to form both side plate portions 10b, 10b, and the horizontal portion 1a of the weight support member 1 and the both side plate portions 10.
b and 10b form a weight protection member 10 having a substantially U-shaped cross section.

Therefore, the weight, which is entirely covered with an elastic material such as rubber, is inside the both side plate portions 1b, 1b of the weight support member 1, and the weight support member 1
Since the weight is elastically supported and fixed with a small gap between the horizontal part 1a of the weight support member 1 and the horizontal part 1a of the weight support member 1, Both side plate parts 10b, 10 of the weight protection member 10 having a phase of 90° with
It will be surrounded by b.

Then, the above-mentioned weight support member 1 is mounted on the damper mounting member 6, which has a substantially U-shaped cross section and is fixed to the leaf 5 of the leaf spring with bolts 8, etc., in the same direction so that the upper ends thereof coincide with each other, and both are connected with bolts 9. conclude.

In the embodiment of the present invention described above, the weight 2 is fixed to the inner sides of the side plate portions 1b, 1b of the weight support member 1 via the elastic body 4, and is entirely covered with an elastic material 3 such as rubber. is for the side plate parts 7b, 7b, 7b', 7b', 10b, 10b of the weight protection members 7, 7', 10 having a phase of 90 degrees with the side plate parts 1b, 1b of the weight support member 1. As a result, the weight 2 is surrounded by a box, so even if the elastic body 4 that supports and fixes the weight 2 cracks, there is no risk that the weight 2 will fall off, and there is no risk of the weight 2 falling off from outside. etc. will not collide with the elastic body 4 etc. Moreover, since the weight 2 is entirely covered with an elastic material such as rubber, even if the elastic body 4 is damaged, no tapping noise or the like will be generated. Furthermore, since the weight 2 is surrounded by a box shape as described above, even if the elastic body 4 is damaged, the weight will not move in the longitudinal direction of the leaf 5 of the leaf spring, and therefore will not interfere with other parts. Furthermore, since the weight support member 1 also serves as a weight protection member, manufacturing costs can be reduced.

As explained in the above embodiment, each element constituting the dynamic damper of the present invention is formed by simple processing of a plate-shaped body, and the structure is extremely simple and can be provided at low cost. It also has an effect.

[Effect of idea]

A dynamic damper device for a leaf spring for vehicle suspension according to the present invention includes a weight support member having a substantially U-shaped cross section and a weight fixed therebetween via an elastic body between both side plates having a substantially U-shaped cross section. A damper mounting member having a letter shape is coated in the same direction, and the opening of the weight portion formed by the sheathing in the same direction is protected by a weight protection member disposed in the opening. In order to prevent it from falling off, the weight was covered so that it was smaller than the outer dimensions of the weight, so the weight fixed via an elastic body to the inside of the side plates of the weight support member having a substantially U-shaped cross section was covered with the weight as described above. Since the weight is surrounded by both side plates of the support member and the weight protection member, even if the elastic body that supports and fixes the weight cracks and breaks, the weight will not fall off. This prevents the weight from coming into contact with other parts and causing an accident, and as mentioned above, the weight exists in a box-like body formed by the side plates of the weight support member and the weight protection member. Not only will the elastic body not be damaged by flying stones from the outside, which will impair the effectiveness of the dynamic damper, but even if the elastic body is damaged, the weight will not fall out of the gap, thus preventing it from interfering with other parts. The parts will not be damaged.

Furthermore, depending on the design of the gap between the horizontal part of the weight support member and the weight, it can also be used as an impact damper.

[Brief explanation of drawings]

The drawings show an embodiment of the dynamic damper device for a leaf spring suspended in a vehicle according to the present invention. Fig. 1 shows the first embodiment, A is a front view, B is a sectional view taken along the line X-X of A, Figure 2 is a front view of the second embodiment;
FIG. 3 is a front view of the third embodiment, FIG. 4 is a side view of the leaf spring, and FIGS. 5 and 6 are front views and sectional views of different conventional devices. DESCRIPTION OF SYMBOLS 1... Weight support member, 1a... Horizontal part of weight support member, 1b, 1b... Side plate part of weight support member, 2... Weight, 4... Elastic body, 5
... Leaf of leaf spring, 6 ... Damper mounting member, 7, 7', 10 ... Weight protection member.

Claims (1)

[Scope of utility model registration request] A weight support member, in which a weight is fixed between both side plates of a member having a substantially U-shaped cross section, is mounted in the same direction on a damper mounting member having a substantially U-shaped cross section that is attached to a leaf spring. The opening of the weight part formed by the exterior in the same direction is covered by a weight protection member disposed in the opening so that the gap between the openings is equal to or less than the external dimensions of the weight. Dynamic damper device for vehicle suspension.