JP2843653B2 - Mounting bracket for strut - Google Patents

Description

The present invention relates to a structure of a mounting brat for mounting a strut tube of a strut device to an axle side.

(Prior Art) Conventionally, as a strut mounting bracket, for example, a bracket described in Japanese Utility Model Application Laid-Open No. 62-49036 is known.

That is, the conventional strut mounting bracket is provided at the lower end of the strut tube, and as shown in FIG. 7, the mounting flange 60b extends in parallel from both ends of the outer portion 60a along the outer peripheral surface of the strut tube. The main body 60 is formed by projecting, and an inner portion 61 provided by connecting the base ends of both mounting flanges 60b, 60b is provided.

(Problems to be Solved by the Invention) However, since the conventional strut mounting bracket as described above is composed of the two members of the main body portion 60 and the inner portion 61, molding of both members is a separate step. In addition, there is a problem that an assembling step of both members is required, and thus the production cost is high.

Incidentally, as shown in Japanese Utility Model Application Laid-Open No. 56-79733, it is possible to reduce the manufacturing cost by omitting the inner part, but in this case, there is a problem that the supporting strength is greatly reduced.

The present invention has been made in view of such a problem, and it is an object of the present invention to provide a strut mounting bracket that can reduce the manufacturing cost of the mounting bracket without lowering the support strength.

(Means for Solving the Problems) In order to achieve the above-mentioned object, in the strut mounting bracket of the present invention, the cross section perpendicular to the axis has an arc shape along the outer periphery of the lower end portion of the strut tube. An outer portion formed in a shape, a pair of mounting flange portions extending outward so as to be substantially parallel to each other from both ends of the arc shape of the outer portion, and provided in a space of an arc of the outer portion. An inner portion provided in an arc shape following the outer portion and forming a circumferential shape along the outer periphery of the strut tube. A folded overlapped portion was formed by folding and stacking a plate material between the outer and inner portions, and the outer portion, the inner portion, and the mounting flange portion were formed from a single plate material.

(Operation) In the strut mounting bracket of the present invention, an outer portion is formed in a continuous sheet material in the form of a split tube along the outer periphery of the lower end portion of the strut tube, and flanges are formed from both ends in the circumferential direction of the outer portion. A pair of mounting flange portions are formed side by side, and an inner portion is formed between both ends of the outer portion in the circumferential direction along the outer periphery of the strut tube to form a strut mounting bracket.

At this time, in the present invention, the folded portion is formed by folding the plate material and overlapping the portion between the outer portion and the inner portion including the mounting flange portion. Thereby, the outer part, the inner part, and the mounting flange part can be formed by one plate material.

Therefore, in the present invention, the number of manufacturing steps can be reduced as compared with the case where the outer portion and the inner portion are formed by a plurality of members.

In addition, since the inner portion connecting the both ends of the outer portion in the circumferential direction is not omitted, the same supporting strength as that of the related art can be obtained.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 3 is a side view showing the entire strut apparatus having the strut mounting bracket (hereinafter, referred to as mounting bracket) 3 according to the first embodiment of the present invention. In this figure,
Reference numeral 1 denotes an outer tube as a strut tube. The outer tube 1 forms a reservoir chamber (not shown) between the outer tube 1 and an inner cylinder tube (not shown).

A piston rod 2 protrudes from an upper end of the outer tube 1, and a spring seat 4 for supporting a lower end of a spring (not shown) is attached to an outer periphery of an intermediate portion of the outer tube 1.

A mounting bracket 3 is attached to the lower end of the outer tube 1, and in this embodiment, the mounting bracket 3 is formed by processing a single plate.

That is, as shown in detail in FIGS. 1 and 2, the mounting bracket 3 has an inner diameter along the outer peripheral surface of the outer tube 1 and has a space 3f in the axial direction (vertical direction). An outer portion 3a formed in a split cylindrical shape, a pair of mounting flange portions 3b, 3b extending parallel to each other from both ends in the circumferential direction of the outer portion 3a, and both ends in the circumferential direction of the outer portion 3a. And the outer tube 1
Is formed along the outer peripheral surface of the outer portion 3a and an inner portion 3c curved and formed in a substantially semicircular shape continuous with the outer portion 3a.

Between the circumferential end of the outer portion 3a and the end of the inner portion 3c, folded overlap portions 3g, 3g formed by folding and overlapping the plate material are formed.

An opening b is formed at the center of the outer portion 3a.

Bolt insertion holes 3d are formed in the upper and lower portions of both mounting flange portions 3b.

The mounting bracket 3 is mounted by fitting a cylindrical portion formed by the inner portion 3c and the outer portion 3a to the outer periphery of the lower end of the outer tube 1 and welding.

 Next, the operation of the embodiment will be described.

In this embodiment, when the mounting bracket 3 is formed, a single plate material is processed and formed.

That is, first, bolt insertion holes 3d are formed vertically at both ends of one horizontally long rectangular plate (not shown), and two upper and lower horizontal slits are formed in the center of the plate in parallel.
In FIG. 2, a and a indicate holes formed at positions corresponding to both ends of the slit when the slit is formed.

Next, the central portion of the plate material is set so that its inner diameter is the outer tube 1.
The outer part 3a is formed by molding along the outer circumference of
At this time, the portion of the plate material sandwiched between the slits (not shown) is bent in the direction of the space 3f of the outer portion 3a in the opposite direction to the space 3f, and is disposed at the position of the space 3f while being bent into a substantially semicircular shape. Thus, the inner portion 3c is formed.

At this time, a folded portion 3g is formed between the outer portion 3a and the inner portion 3c.

Then, both mounting flanges 3b, 3b are formed with the both ends of the plate material facing each other in parallel with the above processing.

The mounting bracket 3 formed as described above can obtain sufficient strength because the inner end 3c connects the both ends of the outer part 3a in the circumferential direction.

As described above, in the present embodiment, the mounting bracket 3 has a structure having the inner portion 3c and sufficient strength can be obtained.
Is formed from a single plate, so that the outer portion 3a and the inner portion 3c can be easily processed and the manufacturing cost can be reduced as compared with the case where the outer portion 3a and the inner portion 3c are formed by separate members. I have.

Further, in this embodiment, since the inner portion 3c is formed by a part of the split cylindrical portion forming the outer portion 3a, the mounting bracket 3 has a feature that the weight can be reduced. .

Next, a second embodiment to a fourth embodiment will be described.
In describing these embodiments, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
Only differences from the first embodiment will be described.

FIG. 4 is a perspective view showing a mounting bracket 32 according to a second embodiment of the present invention.

The mounting bracket 32 of this embodiment is also formed by bending a single horizontally long rectangular plate, and in the case of this embodiment, the mounting flange portion 3b between the outer portion 3a and the inner portion 3c.
It is itself a folded part.

That is, in the present embodiment, the outer portion 3a is formed by bending the middle portion of the rectangular plate material.

Then, a portion forming the mounting flange portion 3b is extended in parallel from both ends of the outer portion 3a, and further, the mounting flange portion 3b
The sheet material is folded back and overlapped at the tip end of, and a folded overlap portion is formed on the mounting flange 3b itself.

Further, both ends of the plate are formed in an arc shape along the outer periphery of the outer tube 1, and both ends of the plate are welded to form a welded portion e to form the inner portion 3c.

Therefore, this embodiment is characterized in that the two mounting flanges 3b, 3b have a double structure and high rigidity can be obtained.

FIG. 5 is a perspective view showing a mounting bracket 33 according to a third embodiment of the present invention.

The mounting bracket 33 of this embodiment is different from that of the second embodiment in that the folded back portion is provided only on one of the mounting flange portions 3b.

Therefore, in the case of the second embodiment, the both ends of the plate material are spot-welded (c is a welding point in the figure) to form the mounting flange portion 3b which is not the folded back portion. Both ends are located at the tip of the other mounting flange 3b.

FIG. 6 (a) shows a mounting bracket 34 according to a fourth embodiment of the present invention.
Perspective view showing a pipe material P to be used as a material of FIG. 6 (b)
FIG. 14 is a perspective view showing a mounting bracket 34 of a fourth embodiment.

That is, the mounting bracket 34 is formed by press-molding a pipe material P shown in FIG. 6A, and as shown in FIG. Mounting flanges 3b, 3b are formed, and an outer portion 3a and an inner portion 3c are formed along the outer periphery of the outer tube 1 in the remaining portions.

Therefore, also in this embodiment, the mounting flange portions 3b, 3b constitute a folded overlap portion.

As described above, since the fourth embodiment does not include a welding process, it has a feature that the manufacturing cost can be reduced as compared with the second and third embodiments.

The embodiments of the present invention have been described in detail with reference to the drawings.
The specific configuration of the present invention is not limited to these embodiments.

(Effect of the Invention) As described above, in the strut mounting bracket of the present invention, since a folded overlap portion is provided between the outer portion and the inner portion to form both of them from one sheet material, a plurality of As compared with the case of forming with a member, the effect that the number of manufacturing steps can be reduced and the manufacturing cost can be reduced without lowering the supporting strength can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view showing a strut mounting bracket according to a first embodiment of the present invention, FIG. 2 is a side view showing the first embodiment mounting bracket, and FIG. 3 is a strut device having the first embodiment mounting bracket mounted thereon. FIG. 4 is a perspective view showing a strut mounting bracket according to a second embodiment of the present invention.
FIG. 5 is a perspective view showing a strut mounting bracket according to a third embodiment of the present invention, and FIG. 6 (a) is a perspective view showing a pipe material of the strut mounting bracket according to a fourth embodiment of the present invention.
FIG. 6 (b) is a perspective view showing a strut mounting bracket according to a fourth embodiment of the present invention, and FIG. 7 is a plan view showing a conventional strut mounting bracket. 1 ... outer tube (strut tube) 3 ... mounting bracket 3a ... outer part 3b ... mounting flange 3c ... inner part 3f ... space part 3g ... folded back part 32 ... mounting bracket 33 ... mounting Bracket 34 …… Mounting bracket

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F16F 9/00-9/58

Claims (1)

(57) [Claims] An outer section formed in a cylindrical shape as a whole at right angles to the axis along the outer periphery of a lower end portion of the strut tube, and an outer end formed in a cylindrical shape as a whole, and substantially parallel to each other from both ends of the arc shape of the outer section. A pair of mounting flange portions extending outward so as to face each other, and a pair of mounting flange portions provided in an arc space of the outer portion, and provided in an arc shape following the outer portion, and a circumference along the outer periphery of the strut tube. An inner part forming a shape; and a strut mounting bracket, comprising: a folded overlapped part formed by folding and overlapping a plate material between the outer part and the inner part including the mounting flange part; An installation bracket for struts, wherein an inner portion, an inner portion, and an installation flange portion are formed from a single plate.