JPH09112559A - Bush, pedal holding mechanism and its assembling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bush whose installing work to the boss of a fluctuation member is simple, and a pedal holding structure utilizing such a bush and its assembling method. SOLUTION: A bush 30 is composed of a sleeve 33, and the first and the second flanges 31 and 32 provided at both ends of the sleeve 33. To the part from near the other end of the sleeve 33, to the second flange 32, four slits 34 along the axial direction are provided. Such a bush 30 is inserted to a pedal boss, and the foot of a support pin is inserted in the sleeve 33. Normally, the bush 30 is in the condition in which the inner diameter of the second flange 32 is almost coincident to the outer diameter of the foot of the support pin, but when the outer periphery of the flange 32 of the bush 30 is pressed, the second flange 32 is contracted as the width of the slit 3, and the flange 32 is changed to the condition the outer diameter of the second flange 32 is made coincide almost to the inner diameter of the pedal boss.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bush mounted on a boss of a rocking member and having a support shaft inserted therein, a pedal support structure using the bush, and an assembling method thereof.

[0002]

2. Description of the Related Art Conventionally, as a pedal support structure for a vehicle clutch pedal or the like, as shown in FIG. 8, a bracket 110 is provided on the vehicle body side, and a pedal boss 120 of a clutch pedal 109 is supported on this bracket 110 (bolt 14).
0) A device that is swingably mounted around is known.

That is, as shown in FIG. 9, such a pedal support structure includes a bracket 110 having first and second plate members 111 and 112 having bolt insertion holes 111a and 112a, and a first bracket 110. And the pedal boss 120 arranged between the second plate members 111 and 112, a pair of bushes 130 and 130 inserted from both open ends of the pedal boss 120, and the pair of bushes 130 and 130.
The collar 150 inserted in the first plate member 111
Bolt insertion hole 111a, collar 150, second plate member 1
The bolt 140 is inserted through the 12 bolt insertion holes 112a.

To assemble such a pedal support structure,
As shown in FIG. 10, first, the bushes 130 and 130 are inserted from both open ends of the pedal boss 120, then the collar 150 is inserted into both the bushes 130 and 130, and then the pedal boss 120 is inserted into the first and second brackets 110.
The bolt 140 is arranged between the plate members 111 and 112, and the bolt 140 is provided in the bolt insertion hole 111a of the first plate member 111 and the collar 15
0, it is inserted into the bolt insertion hole 112a of the second plate member 112, and is fastened with the nut 145.

[0005]

However, in the pedal support structure described above, it is necessary to insert the two bushes 130, 130 from both open ends of the pedal boss 120 (that is, the bushes 130 are inserted from two directions). I didn't like it. Further, when the collar 150 is inserted into the bush 130 after the bush 130 is inserted, the bush 130 on the side opposite to the side into which the collar 150 is inserted may be pushed out by the collar 150, so that workability is also good. There wasn't. These points are factors that complicate the configuration of the automation device, particularly in automating the work of assembling the pedal support structure, and therefore, improvements have been desired.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a bush in which mounting work of a swinging member to a boss is simple, and a pedal support structure using the bush and an assembling method thereof. And

[0007]

Means for Solving the Problems and Effects of the Invention In order to solve the above-mentioned problems, the invention according to claim 1 is a bush mounted on a boss of a rocking member and having a support shaft inserted therethrough. A sleeve through which the shaft is inserted, a first flange provided on the peripheral edge of one end of the sleeve and in contact with one open end of the boss, and an opening provided on the peripheral edge of the other end of the sleeve and the other opening of the boss. A second flange that abuts an end of the second flange, the outer diameter of the second flange being substantially the same as the inner diameter of the boss;
It is characterized in that the inner diameter of the flange is variable until the outer diameter of the support shaft is substantially the same.

When the bush is mounted on the boss of the swing member, first, the second flange is inserted from one opening end of the pedal boss with the outer diameter of the second flange substantially matching the inner diameter of the boss. 2 expose the flange from the other open end of the boss. The second flange exposed from the other opening end of the boss may be configured to restore the inner diameter of the second flange to substantially match the outer diameter of the support shaft, or
The second shaft may be pressed by the support shaft inserted in the bush so that the inner diameter of the second flange substantially matches the outer diameter of the support shaft.

For example, as described in claim 2, a slit may be provided along the axial direction from the vicinity of the other end of the sleeve to the second flange. At this time, the diameter of the second flange contracts or expands by the width of the slit. In particular,
In a normal state, the inner diameter of the second flange is substantially equal to the outer diameter of the support shaft, and when the bush is inserted into the boss, the second flange is pressed by the inner peripheral surface of the boss and contracted by the width of the slit. The outer diameter of the boss may substantially match the inner diameter of the boss. Alternatively, in a normal state, the outer diameter of the second flange is substantially equal to the inner diameter of the boss, and when the support shaft is inserted into the bush, the second flange is pressed by the support shaft and expanded by the width of the slit. The inner diameter may be substantially the same as the outer diameter of the support shaft. In addition to the slits, the same effect as above may be obtained by forming the bush with an elastic material.

According to the bush described above, the boss of the swinging member can be mounted on the boss by inserting it from one of the opening ends of the boss. Compared to the case of inserting from the above), the mounting work is simplified and the workability is improved.

According to a third aspect of the present invention, there is provided a pedal support structure, the pedal boss provided on the pedal, the bush according to the first or second aspect inserted into the pedal boss, and the first hole having a large hole. A second plate member having a plate member and a small hole formed therein, the first flange of the bush being inserted into the large hole, and the second flange of the bush being in contact with the periphery of the small hole; A bracket, a support shaft inserted through the bush and the small hole, a first pressing member for pressing the first plate member of the bracket and the first flange of the bush,
And a support member having a second pressing portion that presses the second plate member of the bracket.

When assembling this pedal support structure, it can be assembled, for example, by the assembling method described in claim 4. That is, the pedal boss is arranged such that the other open end of the pedal boss has a gap with the second plate member between the first plate member having the large hole and the second plate member having the small hole. The bush according to item 1 or 2 is inserted into the pedal boss from the large hole side of the first plate member in a state where the outer diameter of the second flange is substantially equal to the inner diameter of the pedal boss, and then the second flange is attached to the pedal boss. The pedal support structure according to claim 3 can be obtained by exposing the end from the open end, and then fixing the support shaft, through which the bush and the small hole are inserted, to the first and second plate members.

According to the pedal support structure and the assembling method thereof, the bush according to claim 1 or 2 is used, and the first plate member of the bracket is provided with a large hole through which the first flange of the bush can be inserted. After the pedal boss is arranged between the first and second plate members of the bracket, the bush and the support shaft can be inserted into the pedal boss, and the bush and the support shaft can be inserted into the pedal boss from the same direction. It was As a result, there is an effect that the assembling work is simplified and the configuration of the automation device when automating the assembly is also simplified.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. Note that the embodiment of the present invention
It is needless to say that the present invention is not limited to the following embodiments, and can take various forms within the technical scope of the present invention. [First Embodiment] FIG. 1 is a sectional view of a pedal support structure of the first embodiment, FIG. 2 is a perspective view of a bush, (a) is a normal state, and (b) is a perspective view showing a deformed state. . The pedal support structure of the first embodiment includes a bracket 10 and a pedal boss 2.
0, the bush 30 and the support pin 40.

The bracket 10 includes first and second plate members 11 and 12 facing each other. The first plate member 11 is provided with a large hole 11a that substantially matches the outer diameter of a first flange 31 (described later) of the bush 30, and the second plate member 12 has the outer diameter of the foot portion 42 of the support pin 40. Small holes 12a that are substantially coincident with each other are formed.

The pedal boss 20 is fixed so as to be integrated with the clutch pedal 9 at substantially the center thereof, and the bracket 1
It is arranged between zero first and second plate members 11 and 12. The bush 30 includes a sleeve 33, a first flange 31 provided on the peripheral edge of one end of the sleeve 33, and a second flange 32 provided on the peripheral edge of the other end of the sleeve 33. Also, in the vicinity of the other end of the sleeve 33 (specifically, from the center of the sleeve 33 to the second flange 32).
Four slits 34 are provided along the axial direction from the second position to the second flange 32.

The bush 30 is inserted in the pedal boss 20. The outer peripheral surface of the sleeve 33 substantially coincides with the inner peripheral surface of the pedal boss 20. The first flange 31 is in contact with the one open end 21 of the pedal boss 20 and the head 41 of the support pin 40, and is arranged in the large hole 11 a provided in the first plate member 11. Further, the second flange 32 is in contact with the other open end 22 of the pedal boss 20 and the periphery of the small hole 12 a of the second plate member 12.

As shown in FIG. 2A, the bush 30 is usually in a state where the inner diameter of the second flange 32 is substantially the same as the outer diameter of the foot portion 42 of the support pin 40. On the other hand, when the outer periphery of the second flange 32 of the bush 30 is pressed, the second flange 32 is reduced by the width of the slit 34 as shown in FIG.
The outer diameter of the pedal boss 20 changes to a state in which it substantially matches the inner diameter of the pedal boss 20. However, if the pressing of the outer periphery of the second flange 32 is released, the normal state is restored again.

The support pin 40 has a head portion 41 (first pressing portion).
And a foot portion 42 and a caulking portion 43 (second pressing portion). In this support pin 40, the foot portion 42 is inserted through the bush 30 and the small hole 12a of the second plate member 12, and the head portion 41 presses the outer surface of the first plate member 11 and the outer surface of the first flange 31 of the bush 30. The caulking portion 43 presses the outer surface of the second plate member 12. With this support pin 40,
The pedal boss 20 is slidably supported by the bracket 10.

The assembling process of the pedal support structure of the first embodiment having the above construction will be described with reference to FIG. FIG. 3 is an assembly process diagram of the pedal support structure. First, FIG.
As shown in (a), the pedal boss 2 of the clutch pedal 9
0 is disposed between the first and second plate members 11 and 12 of the bracket 10. At this time, one opening end 21 of the pedal boss 20 is arranged in a state of being inserted into the large hole 11a of the first plate member 11. Then, the other open end 22 of the pedal boss 20 is arranged so as to have a gap with the second plate member 12. on the other hand,
The outer periphery of the second flange 32 of the bush 30 is pressed so that the outer diameter of the second flange 32 substantially matches the inner diameter of the pedal boss 20 (see the chain double-dashed line in FIG. 3A).

Next, the bush 30 in the state of the two-dot chain line in FIG. 3A is inserted into the pedal boss 20 from the large hole 11a side of the first plate member 11. At this time, the second flange 32
Since the outer circumference of the second boss 32 is pressed by the inner peripheral surface of the pedal boss 20, the outer diameter of the second flange 32 is maintained substantially in the same state as the inner diameter of the pedal boss 20 (see FIG. 3B).

Next, the second flange 32 of the bush 30.
Is exposed from the opening end 22 at the other end of the pedal boss 20.
Then, the second flange 32 is released from the pressing state and returns to a normal state, that is, the inner diameter of the second flange 32 is substantially equal to the outer diameter of the foot portion 42 of the support pin 40. As a result,
In the bush 30, the outer peripheral surface of the sleeve 33 is the pedal boss 2.
The first flange 31 abuts on one opening end 21 of the pedal boss 20 and the second flange 32 abuts on the other opening end 22 of the pedal boss 20 (FIG. 3).
(C)).

After that, the bush 30 and the second plate member 12
The foot portion 42 of the support pin 40 is inserted into the small hole 12a. Then, the first plate member 11 of the bracket 10 is moved by the head 41.
While the outer surface of the bush 30 and the outer surface of the first flange 31 of the bush 30 are pressed, the foot portion 42 protruding from the small hole 12a is swaged (for example, rolling swaged) to form the swaged portion 43. Through the above assembling process, the pedal support structure of FIG. 1 can be obtained.

According to the first embodiment described above, the following effects can be obtained. The bush 30 has one opening end 21 of the pedal boss 20.
Since it is mounted on the pedal boss 20 if it is inserted from above, the mounting work becomes simpler and the workability is improved as compared with the case of inserting from both open ends of the boss as in the past. Since the bush 30 is used and the first plate member 11 of the bracket 10 is provided with the large hole 11a through which the first flange 31 of the bush 30 can be inserted, the pedal boss 20 is attached to the first and second plate members 11 of the bracket 10. The bush 30 and the support pin 40 can be inserted into the pedal boss 20 after being arranged between the two 12, and the bush 30 and the support pin 40 can be inserted into the pedal boss 20 from the same direction. As a result, there is an effect that the assembling work is simplified and the configuration of the automation device when automating the assembly is also simplified. In the bush 30 mounted on the pedal boss 20, the first and second flanges 31 and 32 have the opening end 2 of the pedal boss 20.
Since they are engaged with the pedal bosses 1 and 22, the bush 30 once attached to the pedal boss 20 does not fall off from the pedal boss 20, and an effect that it is easy to handle is obtained. [Second Embodiment] FIGS. 4A and 4B are perspective views of a bush according to a second embodiment. FIG. 4A is a normal state, and FIG. 4B is a perspective view showing a deformed state.

Since the pedal support structure of the second embodiment is the same as that of the first embodiment except for the bush, the other components are given the same reference numerals and the description thereof will be omitted. In addition, since the sectional view of the pedal support structure of the second embodiment appears similar to that of FIG. 1, the bush 30, the first flange 31, the second flange 32, and the sleeve 33 of the first embodiment are replaced by the bush 50 of the second embodiment. , First flange 51, second flange 5
2 and the sleeve 53 will be described below with reference to FIG.

The pedal support structure according to the second embodiment includes a bracket 10, a pedal boss 20, a bush 50 and a support pin 4.
0. The bush 50 is inserted into the pedal boss 20, the outer peripheral surface of the sleeve 53 is substantially aligned with the inner peripheral surface of the pedal boss 20, and the first flange 51 is one opening end 21 of the pedal boss 20 and the head 41 of the support pin 40.
And is inserted into the large hole 11a provided in the first plate member 11 of the bracket 10, and the second flange 52 abuts around the other open end 22 of the pedal boss 20 and the small hole 12a of the second plate member 12. ing.

This bush 50, as shown in FIG.
The sleeve 53 includes a first flange 51 provided at the peripheral edge of one end of the sleeve 53, and a second flange 52 provided at the peripheral edge of the other end of the sleeve 53. Further, the sleeve 53 has a narrowed portion 53a whose diameter gradually decreases from the approximate center to the second flange 52 side. Further, the throttle portion 53a and the second flange 52 are provided with four slits 54 along the axial direction.

As shown in FIG. 4A, the bush 50 is usually in a state where the outer diameter of the second flange 52 is substantially the same as the inner diameter of the pedal boss 20. On the contrary,
When the foot portion 42 of the support pin 40 is inserted through the bush 50, as shown in FIG. 4B, the second flange 52 expands by the width of the slit 54 together with the narrowed portion 53a, and the inner diameter of the second flange 52 increases. Changes to a state in which the outer diameter of the foot 42 of the support pin 40 substantially matches. However, if the support pin 40 is removed from the bush 50, the normal state is restored again.

The process of assembling the pedal support structure of the second embodiment having the above structure will be described with reference to FIG. FIG. 5 is an assembly process diagram of the pedal support structure of the second embodiment.
First, as shown in FIG. 5A, the pedal boss 20 of the clutch pedal 9 is attached to the first and second plate members 1 of the bracket 10.
It is placed between 1 and 12. At this time, one opening end 21 of the pedal boss 20 is arranged in a state of being inserted into the large hole 11a of the first plate member 11. Then, the other open end 22 of the pedal boss 20 is arranged so as to have a gap with the second plate member 12.

Next, the second flange 52 of the bush 50.
From the large hole 11a side of the first plate member 11 to the pedal boss 20
(See FIG. 5B). Then, bush 50
The second flange 52 of the pedal boss 20 to the open end 2
It is exposed from 2 (see FIG. 5 (c)). After that, the support pin 40 is inserted into the bush 50 and the small hole 12a of the second plate member 12.
Insert the foot portion 42 of the. Then, the narrowed portion 53a of the sleeve 53 of the bush 50 and the second flange 52 are pressed by the foot portion 42 of the support pin 40 and widened by the width of the slit 54, so that the inner diameter of the second flange 52 becomes smaller than the support pin 40.
The outer diameter of the foot portion 42 is substantially the same. As a result,
In the bush 50, the outer peripheral surface of the sleeve 53 is the pedal boss 2.
The first flange 51 abuts on one opening end 21 of the pedal boss 20, and the second flange 52 abuts on the other opening end 22 of the pedal boss 20, substantially matching the inner peripheral surface of the pedal boss 20.

Then, with the head portion 41 pressing the outer surface of the first plate member 11 of the bracket 10 and the outer surface of the first flange 51 of the bush 50, the foot portion protruding from the small hole 12a is swaged (for example, rolling swaging). By this, the crimped portion 43 is formed. By the above assembly process,
The pedal support structure of the second embodiment can be used (see FIG. 1).
reference).

According to the second embodiment described above, in addition to the effects of the first embodiment, the following effects are exhibited. That is, when the bush 50 is inserted into the pedal boss 20, it is not necessary to press the second flange 52 of the bush 50 to deform the bush 50, and therefore, the effect that the mounting on the pedal boss 20 becomes easier is obtained. [Modification of the Embodiment] In the first embodiment, as shown in FIG. 6, the large hole 11 is formed in the first plate member 11 of the bracket 10.
Instead of drilling a, a small hole 11b that substantially matches the outer diameter of the foot portion 42 of the support pin 40 is drilled, and the first flange 31 of the bush 30 abuts around the small hole 11b of the first plate member 11. You may contact. The assembling method in this case is different from that of the first embodiment. First, the bush 30 is attached to the pedal boss 20, and then the first and second plate members 11 of the bracket 10,
Pedal boss 20 with this bush 30 mounted between 12
, And then fixed to the bracket 10 by the support pins 40. Even in this case, since the bush 30 is mounted on the pedal boss 20 by inserting it from one opening end 21 of the pedal boss 20, the bushing 30 can be mounted on the pedal boss 20 more than the conventional case where it is inserted from both opening ends of the boss. It is possible to obtain the effect that it becomes simple and the workability is improved. Further, the bush 30 once attached to the pedal boss 20 does not fall off from the pedal boss 20, and an effect that it is easy to handle is obtained.

In the first embodiment, as shown in FIG. 7, the head 41 of the support pin 40 presses the portion 41a of the bush 30 that presses the first flange 31 and the first plate member 11 of the bracket 10. The portion 41b may be provided with a step. Furthermore, in the first and second embodiments, a collar (for example, the collar 150 in FIGS. 9 and 10) may be used.

[Brief description of the drawings]

FIG. 1 is a sectional view of a pedal support structure of a first embodiment.

FIG. 2 is a perspective view of the bush of the first embodiment,
(A) is a normal state, (b) is a perspective view showing a deformed state.

FIG. 3 is an assembly process diagram of the pedal support structure of the first embodiment.

FIG. 4 is a perspective view of a bush according to a second embodiment,
(A) is a normal state, (b) is a perspective view showing a deformed state.

FIG. 5 is an assembly process diagram of a pedal support structure of a second embodiment.

FIG. 6 is a sectional view of a modification of the first embodiment.

FIG. 7 is a sectional view of a modification of the first embodiment.

FIG. 8 is a side view of a conventional pedal support structure.

9 is a cross-sectional view taken along the line AA of FIG.

FIG. 10 is an assembled perspective view of a conventional pedal support structure.

[Explanation of Codes] 9 ... Clutch pedal, 10 ... Bracket, 11 ... First plate member, 11a ... Large hole, 12 ... Second plate member, 12a ... Small hole, 20 ... Pedal boss, 21, 22 ...
・ Open end, 30 ... Bushing, 31 ...
・ First flange, 32 ... Second flange, 3
3 ... sleeve, 34 ... slit,
40 ... Support pin, 41 ... Head,
42 ... foot part, 43 ... caulking part

Claims (4)

[Claims] 1. A bush mounted on a boss of an oscillating member and having a support shaft inserted therein, a sleeve having the support shaft inserted therein, and a bush provided at a peripheral edge of one end of the sleeve, A first flange that abuts on the opening end, and a second flange that is provided on the peripheral edge of the other end of the sleeve and abuts on the other opening end of the boss, and for the second flange, outside the second flange. A bush that is variable from a state in which the diameter substantially matches the inner diameter of the boss to a state in which the inner diameter of the second flange substantially matches the outer diameter of the support shaft. 2. The second from the vicinity of the other end of the sleeve
The bush according to claim 1, wherein a slit is provided along the axial direction to the flange. 3. A pedal boss provided on the pedal, a bush according to claim 1 inserted into the pedal boss, a first plate member having a large hole and a second plate member having a small hole.
A bracket having a plate member, the first flange of the bush being inserted into the large hole, and the second flange of the bush coming into contact with the periphery of the small hole, and the bracket being inserted into the bush and the small hole. A support shaft, a first plate member of the bracket, a first pressing portion for pressing the first flange of the bush, and a support member having a second pressing portion for pressing the second plate member of the bracket. Pedal support structure featuring. 4. The other open end of the pedal boss is second between the first plate member having a large hole and the second plate member having a small hole.
The pedal boss is arranged so as to have a gap with the plate member, and then the bush according to claim 1 or 2 is arranged from the large hole side of the first plate member with the outer diameter of the second flange substantially matching the inner diameter of the pedal boss. The support shaft is inserted into the pedal boss, then the second flange is exposed from the opening end of the other end of the pedal boss, and then the support shaft having the bush and the small hole is inserted into the first support shaft.
And a pedal support structure according to claim 3 by fixing the pedal support structure to the second plate member.