JP3758438B2 - Steering gear box support structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a support structure for a steering gear box, and is intended to improve rigidity (front-rear rigidity) in the support portion of the gear box, improve installation accuracy, and simplify workability during installation. It is.
[0002]
[Prior art]
As a support structure that fixes and supports the steering gear box to the vehicle body or a mounting member, a structure as shown in FIG. 8 is conventionally known.
[0003]
In FIGS. 8 (a) and 8 (b), reference numeral 12 denotes a bracket which forms a basic skeleton of the support structure. One end of the bracket 12 is fixed to the inner surface thereof by welding or the like, and the other end slides along the inner surface. A possible support member 13 is provided.
Further, 14 is a claw portion provided at the end of the bracket 12, 15 is a receiving portion that is provided at the other end of the bracket 12 and engages with the claw portion 14, and 16 is fitted into the hole 12 a of the bracket 12. An insulator (vibration-proof rubber) that has a protrusion and is disposed inside the protrusion, and 17 is a collar that has a through-hole for inserting a bolt and is disposed between the openings 12b and 12c of the bracket 12. The insulator 16 and the collar 17 are taken out and shown in FIGS.
[0004]
In such a conventional support structure, as shown in FIG. 10, first, the insulator 16 is disposed inside the bracket 12, and the bracket 12 is attached to the openings 12 b and 12 c of the bracket 12 so that the ends of the collars 17 are respectively fitted. As shown in FIG. 11, it is assembled by engaging the claw part 14 of the bracket 12 with the receiving part 15 as shown in FIG.
[0005]
Then, as shown in FIG. 12, the steering gear box is attached by positioning the steering gear box 18 inside the insulator 16 and then inserting a connecting bolt 19 into the through hole of the collar 17. The support structure is integrally fixed to the vehicle body or the member 20.
[0006]
[Problems to be solved by the invention]
By the way, the support structure is of a type in which the collar 17 is inserted into the openings 12b and 12c while the bracket 12 is deformed, and the claw portion 2 is engaged with the receiving portion 3 and assembled. Assembling such a structure is difficult. Further, since a gap is easily formed between the bracket 12 and the collar 17, the collar 17 does not rattle, or the flatness of the fastening surface (L area in FIG. 8) with the vehicle body or the member 20. It was necessary to take measures against fastening reliability so that
[0007]
Further, in order to hold the entire area of the outer periphery of the insulator 16, a support member 13 having one end fixed to the bracket 12 is disposed. At each edge of the support member 13 (J and k portions in FIG. 8). The insulator 16 is easily damaged due to friction.
[0008]
Further, the bracket 12 is formed by pressing a plate-like material having the same thickness, and in particular, the neck portion of the bracket 12 (between the portion holding the vehicle body or member fastening portion and the steering box, FIG. There is a problem that it is difficult to secure a sufficient strength in the part c).
As a solution to the problem relating to this point, for example, the one shown in FIG. 13 is known. However, since such a structure is directly attached to the vehicle body or the member, it cannot be temporarily held by hand, and particularly in a case where attachment in a narrow place is required, there is a problem that attachment workability is poor. .
[0009]
An object of the present invention is to propose a support structure that can be easily assembled and has high fastening reliability.
[0010]
[Means for Solving the Problems]
The subject raised in this invention is achieved by the following structures.
That is, the support structure according to claim 1 of the present invention is a support structure that fixes and holds the steering gear box to the vehicle body or the member,
The support structure is composed of at least a front and rear holding member that sandwiches the steering gear box via an insulator,
The holding member has, at one end thereof, a first opening that penetrates between the first opening and a first connecting portion that is integrally connected by a bolt that passes through the first opening, and at the other end, between the two. And a second connection part integrally connected with the vehicle body or the mounting member by a bolt passing through the second opening,
The second connecting portion of the holding member has a neck portion that is thick and increases the rigidity of the support structure by being brought into contact with each other .
[0011]
A support structure of a threaring gearbox according to claim 2 of the present invention is the support structure according to claim 1, wherein the holding members each have a flat surface for applying a preload to the insulator on the outer surface thereof. It has the characteristics.
[0012]
A steering gear box support structure according to claim 3 of the present invention is the support structure according to claim 1 or 2, wherein the second connecting portion includes a through-hole through which the bolt is passed, It is characterized in that it is provided with a temporary fastening member that is press-fitted at least in part and connects the two holding members to each other.
[0013]
According to a fourth aspect of the present invention, there is provided the steering gear box support structure according to any one of the first to third aspects, wherein the temporary fastening member is inserted from one end of the second opening. It has the characteristic in that.
[0014]
Furthermore, a steering gear box support structure according to a fifth aspect of the present invention is the support structure according to any one of the first to fourth aspects, wherein a temporary fastening member is inserted from one end of the second opening. It is characterized in that it consists of a collar that is caulked at the other end of the two openings.
[0015]
The steering gear box support structure according to claim 6 of the present invention is the support structure according to claim 3 or 4, wherein the collar is in contact with the end of the second connecting portion at one end thereof. It is characterized by having a flange for positioning.
[0016]
The steering gear box support structure according to claim 7 of the present invention is the support structure according to claim 1, wherein the second connecting portion has a through-hole through which the bolt passes, and is inserted into the second opening. It is characterized in that it is provided with a temporary fastening member that connects the two holding members to each other.
[0017]
A steering gear box support structure according to an eighth aspect of the present invention is the support structure according to the seventh aspect, wherein the temporary fastening member is a collar inserted from one end of the second opening. One end has a flange for positioning the collar in contact with the end surface of the second connecting portion, and the other end is caulked on the outer surface of the holding member in a state of being inserted into the second opening. Have
[0018]
【The invention's effect】
The support structure according to claim 1 of the present invention is composed of at least two split holding members sandwiching the steering gear box via an insulator as a main body part constituting the basic skeleton, and the holding members are connected by bolts. To do.
[0019]
For this reason, according to the first aspect of the present invention, the step of incorporating the main body portion of the support structure while being deformed is omitted, and the assembling work is facilitated. In addition, since the collar is securely sandwiched between the holding members, the collar does not rattle after installation, and the holding members are assembled in close contact with each other. Is secured and the fastening reliability is improved.
[0020]
As for the holding member, a material whose thickness is appropriately changed as necessary is used.In particular, by increasing the thickness of the neck of the main body, the strength of the part is increased, and the longitudinal rigidity of the support structure is increased. Can be increased.
[0021]
In addition, according to the invention of claim 1, since the entire region of the insulator is held by the holding member, it is not necessary to dispose the support member, which is indispensable in the conventional type support structure, and the number of parts can be reduced. Wear due to the edge of the support member is avoided.
[0022]
According to a second aspect of the present invention, there is provided a support structure according to the first aspect, wherein a flat surface for applying a preload to the insulator is provided on the outer surface of the holding member. When assembled to the steering gear box via the load, a load can be applied to the flat surface to apply a preload to the insulator.
[0023]
For this reason, according to the invention of claim 2, the assembling work can be easily performed.
[0024]
According to a third aspect of the present invention, there is provided the support structure according to the first or second aspect, wherein a temporary fastening member that is press-fitted in at least a part of the opening of the second connection portion is provided, and the holding member is connected by a bolt. Prior to this, the temporary fastening member can be press-fitted into the second opening of the second connecting portion.
[0025]
As a result, according to the invention of claim 3 of the present invention, the holding member can be temporarily assembled, and the assembling work can be simplified.
[0026]
According to a fourth aspect of the present invention, there is provided the support structure according to the third aspect, wherein the provisional fastening member is a collar inserted from one end of the opening of the second connecting portion, whereby the collar is attached to the support structure. It can be used as it is as a component.
[0027]
Therefore, in the invention according to the fourth aspect of the present invention, when it is attached to the steering gear box and fixedly held on the vehicle body or the member, it is not necessary to remove the temporary fastening member, and the assembling work can be simplified.
[0028]
Furthermore, the support structure according to claim 5 of the present invention is the support structure according to claim 3 or 4, wherein the temporary fastening member is used as a collar and inserted from one end of the second opening. I can keep it.
[0029]
As a result, in the invention of claim 5 of the present invention, the collar does not fall off from the opening, and such a collar can also be used as a constituent member of the support structure, thereby simplifying the assembling work. Is planned.
[0030]
The support structure according to claim 6 of the present invention is the support structure according to claim 4 or 5, wherein a collar that can be used as a temporary fastening member is in contact with the outer end of the second connecting portion at one end thereof. By having a flange for positioning the collar, the collar is always in a fixed position.
[0031]
Therefore, in the invention according to the sixth aspect of the present invention, shakiness of the collar is suppressed, which is advantageous in securing flatness on the fastening surface and contributes to improvement in fastening reliability.
[0032]
A support structure according to a seventh aspect of the present invention is the support structure according to the first aspect, wherein the second connecting portion is provided with a through hole through which a bolt is passed, and is inserted into the second opening to be divided into two. It is also possible to arrange temporary fastening members that connect the two.
[0033]
Since such a temporary fastening member is not press-fitted, it can be installed very easily.
[0034]
The support structure according to an eighth aspect of the present invention is the support structure according to the seventh aspect, wherein the temporary fastening member is a collar inserted from one end of the second opening. A flange for positioning the collar is provided in contact with the end face of the connecting portion, and the other end can be crimped with the end face of the opening in a state of being inserted into the second opening.
[0035]
For this reason, in the invention of claim 8 of the present invention, the collar is not easily dropped from the opening of the holding member, and a quick assembling operation can be realized.
[0036]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described more specifically based on the drawings.
[0037]
FIG. 1 schematically shows a support structure of a steering gear box according to the present invention with respect to its cross section, and the numbers 1A and 1B in the figure are shown as an example of two parts constituting the basic skeleton of the support structure. The holding members 1A and 1B are the holding members, and the neck portion c is thicker than other portions, and forms a space for arranging the insulator in a combination state thereof. Reference numeral 2 denotes an insulator sandwiched between the holding members 1A and 1B.
[0038]
Reference numerals 3A and 3B denote first connecting portions shown in an example provided integrally with the holding members 1A and 1B, and the connecting portions 3A and 3B are first openings 4A passing through them. 4B, and is integrally connected to the first openings 4A and 4B through bolts 5.
[0039]
Reference numerals 6A and 6B denote second connecting portions shown as examples integrally provided at the other ends of the holding members 1A and 1B. The connecting portions 6A and 6B are second openings penetrating between them. 7A, 7B.
[0040]
Reference numeral 8 denotes a temporary fastening member having a flange portion at the end and having an outer diameter that is equal to or slightly larger than the diameter of the second openings 7A and 7B. The temporary fastening member 8 includes the second openings 7A and 7B. It is press-fitted into.
[0041]
Further, 9 is a flat surface formed on the outer surface of each of the holding members 1A and 1B, 10 is a bolt, and this bolt 10 engages the vehicle body or member 11 with the second connecting portions 6A and 6B. In this state, the holding member 1 </ b> A, 1 </ b> B is fixedly held on the vehicle body or member 11 through the through hole of the temporary fastening member 8 and the opening of the vehicle body or member 11.
[0042]
In the first embodiment, the steering gear box is fixedly held on the vehicle body or member in the following manner.
[0043]
First, the insulator 2 is sandwiched between the holding members 1A and 1B, the bolts 5 are connected to the first openings 4A and 4B of the first connecting portions 3A and 3B through the bolts 5, and the second connecting portions 6A and 6B are connected. , The temporary fastening member 8 is press-fitted into the second openings 7A and 7B.
[0044]
In this state, the steering gear box is inserted inside the insulator 2, and then the second connecting portions 6 </ b> A and 6 </ b> B are engaged with the vehicle body or the member 11 and connected by the bolt 10.
[0045]
When it is necessary to preload the insulator 2 during temporary assembly of the support structure or when attaching the support structure of the temporary assembly to the vehicle body or the like, the flat surfaces 9 of the holding members 1A and 1B are clamped from both sides. It is made to pinch using a means.
[0046]
As shown in the first embodiment, the support structure according to the present invention has a combined structure having at least two holding members 1A and 1B as a basic skeleton. However, there is no need for a process that is incorporated in the process.
[0047]
Further, since the temporary fastening member 8 that can use the collar is press-fitted, the temporary fastening member is not rattled and the support structure can be easily handled in the temporarily assembled state.
[0048]
In particular, the holding members 1A and 1B have a thick neck portion c and are brought into contact with each other, whereby the rigidity of the support structure in the direction of the arrow in the drawing, that is, the longitudinal rigidity is remarkably increased. By shortening the dimension H in the drawing, the moment from the input point m to the bolt 10 is reduced, so that the longitudinal rigidity can be further improved.
[0049]
In addition the holding member 1A, and 1B, unless to be flat by machining the outer surface engaging the body or member, is increased fastening reliability parallelism is ensured in L ₁ region.
[0050]
Furthermore, according to the first embodiment, since all the outer surfaces of the insulator 2 are held in contact with the inner surfaces of the holding members 1A and 1B, the insulator 2 is not damaged by wear.
[0051]
FIG. 2 shows a second embodiment as a support structure according to the present invention. In this example, the basic structure is not different from that shown in the first embodiment, but the collar 8 as a temporary fastening member is formed of the holding members 1A and 1B as shown in FIG. Of the second openings 7A and 7B, only the opening 7A is press-fitted, and the end face of the opening 7B is caulked as shown in FIG.
[0052]
According to the second embodiment, the collar 8 can be easily attached as compared with the case where the entire area of the collar 8 is press-fitted, and in particular, the steering gear box can be arranged in a state where the holding members 1A and 1B are temporarily assembled. When the work must be performed in an environment where it cannot be performed, the collar 8 does not easily fall off from the holding member 1A, so that an efficient assembling work can be realized.
[0053]
FIG. 5 shows a third embodiment of the support structure according to the present invention. In this example as well, the basic structure is different from that shown in the first embodiment or the second embodiment. Although the collar 8 as a temporary fastening member has an outer diameter slightly smaller than the inner diameter of the second openings 7A and 7B, as shown in FIG. As shown in FIG. 7 with the flange portion attached to the second openings 7A and 7B and a flange portion provided at one end in contact with the outer surface of the holding member 1A, the tip portion is outside the opening 7B, that is, holding Caulking is performed on the outer surface of the member 1B.
[0054]
In the third embodiment, since the collar 8 is not press-fitted, temporary assembly can be performed smoothly. Further, since the outer diameter of the collar 8 only needs to be smaller than the inner diameters of the openings 7A and 7B, a very high accuracy is not required.
[Brief description of the drawings]
FIG. 1 shows a first embodiment of a support structure according to the present invention.
FIG. 2 shows a second embodiment of a support structure according to the present invention.
FIG. 3 is a diagram showing a main part of FIG. 2;
FIG. 4 is a diagram showing a state of color caulking.
FIG. 5 shows a third embodiment of a support structure according to the present invention.
6 is a diagram showing a main part of FIG. 5;
7 is a diagram showing a state of wearing a collar in FIG. 5. FIG.
FIGS. 8A and 8B show the structure of a conventional support structure, in which FIG. 8A is a side view thereof and FIG. 8B is a bottom view thereof.
9A to 9C show components of the support structure shown in FIG.
FIG. 10 is an explanatory diagram of a procedure for assembling the support structure shown in FIG. 8;
FIG. 11 is an explanatory view of a procedure for assembling the support structure shown in FIG. 8;
FIG. 12 is a view showing a mounting state of the steering gear box.
FIG. 13 is a view showing another configuration example of a conventional support structure.
[Explanation of symbols]
1A Holding member 1B Holding member 2 Insulator 3A 1st connection part 3B 1st connection part 4A 1st opening 4B 1st opening 5 Bolt 6A 2nd connection part 6B 2nd connection part 7A 2nd opening 7B Second opening 8 Temporary fastening member 9 Flat surface 10 Bolt 11 Car body, member 12 Bracket 13 Support member 14 Claw part 15 Receiving part 16 Insulator 17 Collar 18 Steering gear box 19 Bolt 20 Car body, member c Neck part

Claims (8)

A support structure for fixing and holding a steering gear box to a vehicle body or a member;
The support structure is composed of at least a front and rear holding member that sandwiches the steering gear box via an insulator,
The holding member has a first opening passing through the first opening at one end thereof, and a first connecting portion integrally connected by a bolt passing through the first opening and a mutual opening at the other end. A second connection portion having a second opening penetrating therebetween and integrally connected together with the vehicle body or the mounting member by a bolt passing through the second opening;
A support structure for a steering gear box, wherein the second connecting portion of the holding member has a neck portion that is thick and increases the rigidity of the support structure by being brought into contact with each other . The steering gear box support structure according to claim 1, wherein each of the holding members has a flat surface for applying a preload to the insulator on an outer surface thereof. The second connecting portion includes a through hole through which a bolt passes and a temporary fastening member that is press-fitted in at least a part of the second opening and connects the two holding members to each other. Or the steering gear box support structure according to 2. The steering gear box support structure according to claim 3, wherein the temporary fastening member is made of a collar inserted from one end of the second opening. The steering gear box support structure according to claim 3 or 4, wherein the temporary fastening member is formed of a collar inserted from one end of the second opening and caulked at the other end of the second opening. 6. The steering gear box support structure according to claim 4 or 5, wherein the collar has a flange portion for positioning the collar in contact with the outer surface of the second connecting portion at one end thereof. 2. The steering gear according to claim 1, wherein the second connecting portion includes a through hole through which the bolt passes and a temporary fastening member that is inserted into the second opening and connects the two holding members to each other. Box support structure. The temporary fastening member is a collar inserted from one end of the second opening, and one end of the collar has a flange portion for positioning the collar in contact with the outer surface of the second connecting portion, and the other end The steering gear box support structure according to claim 7, wherein the support member is caulked by an outer surface of the holding member in a state of being inserted into the second opening.

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