JPH0257474A - Steering wheel - Google Patents

Abstract

PURPOSE:To improve safety when an elastic support is broken due to elastic fatigue in a vibration control device by providing a guide member having a flange portion as a stopper on the outer end portion at a designated space in the central portion of the vibration control device provided on the upper portion of a steering shaft. CONSTITUTION:A boss portion 11 disposed in the central portion of a steering wheel has a metallic boss 17 fixed to a steering shaft 16, and a metallic boss plate 18 is welded on the boss 17. A vibration control device 31 comprising a plate-like support plate 32, a rectangular parallelopiped weight 37 and plural elastic supports 39 formed by an elastic body like rubber for elastically connecting and supporting the above members 32, 37 is installed on the boss plate 18. In this case, a nut guide member 41 having a flange portion 43 at the upper end of a cylindrical guide portion 42, that is, at a designated distance from the upper surface of the weight 37 is fixed to the support plate 32 in such a manner as to be loosely fitted in an opening portion 38 formed in the central portion of the weight 37.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (G Field of Application) The present invention relates to an automatic steering wheel equipped with a vibration suppressing device called a dynamic damper.

(Prior Art) Conventionally, as described in, for example, Japanese Unexamined Patent Publication No. 62-149552, a flat plate of gold [1] fixed on a boss has been used.
A vibration suppressing device includes a base plate, a metal weight disposed above the base brake 1, and an elastic support interposed between the base plate and the weight to connect them. The steering wheel is known. In this steering wheel described in the above-mentioned publication, a structure is adopted in which a stopper that protrudes from the support body or the side of the weight body is provided on the base plate in order to photograph the weight body more than a predetermined value υ1. . In addition,
In particular, when the stopper is located on the side of the weight body, it is necessary to cover the stopper with a covering layer made of an elastic polymer material, as described in the above publication, in order to prevent the generation of abnormal noise. be.

(Problem to be Solved by the Invention) By the way, in conventional steering wheels of this type, the supporting body made of rubber, etc. that supports the weight body may be damaged due to some reason, for example, due to long-term use. If the rubber is deteriorated and breaks due to an accident, the heavy weight may fly around, damaging the parts of the steering wheel, or damaging the harness of the horn mechanism, etc. There was a problem in that the weight could hit the object and cause the weight to fall out, or in some cases, the weight could fly out.

- [The stopper described in the above publication is simply located on the side of the support or the weight, so it cannot prevent the weight from falling away when the support breaks. .

The present invention aims to solve the above-mentioned problems, and has a streamlined configuration in which the maximum amplitude of the weight body is set to 1. It is possible to prevent the weight from flying off when the elastic support supporting the weight is broken, and the steering cylinder 1? The object of the present invention is to provide a steering wheel that is easy to assemble into a steering wheel.

[Structure of the invention]

(First Step for Solving the Problems) In order to achieve the above-mentioned objective 1, the present invention provides that the steering wheel shaft 1771-14 is passed through v1, and the steering shaft 14 is connected to the : The vibration suppression device 31 is equipped with a vibration suppression device 7131 disposed on the boss 17 and the vibration suppression device 7131 disposed on the boss 17.
1 Boss 17-・Boss side fixed part 17.18J- inside the body
A weight body 37 which faces the boss 17 from 10/j and has an opening 38 in the center through which the nut 1-10 is inserted, and the upper two supports I! 1 Brake 1~32JjJ, Bikono Support) 5 Brake 1/32 1h
In the ring wheel, a support plate 1.1 is inserted between the weight bodies 31 disposed in the ring wheel and connects the weight bodies 31 to provide elasticity; 32
At the top, there is a guide part 42 which is inserted into the 1-1 part 38 between the weights 37U) with a gap therebetween and into which the nut 16 can be inserted; This weight body 31 is located above the weight body 37.
Is the flange too large to be inserted through the opening 38? JI43
This is the case where a guide body 41 is provided.

(For fl) The steering wheel of the present invention is a steering wheel (for I).
This steering cylinder cylinder 11 is assembled into the lift 14 (=J when
When the foot 14 is passed through the boss 17 by L''4, the support bracket of the vibration suppressing device 31 located on the boss side fixed part 17.18 inside the body is provided on the boss 17 and the boss 17. A nut 1G is inserted into the guide part 42 of the Nara 1-guide body 41, and the boss 11 is fixed to the steering shaft 1 by this nut 16. Also, when in use, The weight body 3 is elastically connected to the support plate 32 via the support body 39 against vibrations.
7 damps vibrations and prevents vibrations of the steering wheel. Then, the support body 39 is elastically deformed and the boss 17
The weight body 37 vibrates relative to the support plate 32 side, but especially when the weight body 37 shakes significantly, the inner circumferential surface of the opening 38 in the center of the weight body 31 The maximum amplitude of the weight body 37 is regulated by hitting the guide portion 42 of the guide body 41 inserted through the guide body 38 with a gap maintained, and the unnecessary vibration V of the weight body 37 is suppressed.
1 will be given. Furthermore, for some reason, the support 39 is broken at the IJ.
If the weight body 37 separates from the support 1.1 brakes 1 to 32, the support 1ti plate 32 will separate from the weight body 3.
7 from below 1], and the guide part 42 of the guide body 41 holds down the weight body 37 from horizontally, and also opens the opening 38 located at the top of the mandrel part 42 and above the weight body 37. A guide having a size that cannot be inserted (the flange portion 43 of the hole 41 prevents the weight body 37 from moving upward,
This weight body 31 is prevented from flying off.

(Example) Hereinafter, a first example of the steering wheel of the present invention will be described based on FIGS. 1 to 5.

As shown in FIG. 5, this steering wheel has a central boss portion 11, an annular rim portion 12 at the periphery, and spoke portions that connect these boss portions 11 and rim portions 12. It consists of 13. The boss portion 11
As shown in FIG. 1, steering shirts 1 to 14
J3 has a cylindrical metal boss 11 which is fixed to a washer 15 and a nut 16.
A substantially rectangular metal boss plate 18, which forms a boss-side fixing part together with the boss 17, is melted on the boss 7. Furthermore, the bottom surface of these boss plays 1 to 18 and
- A spoke core metal 19 is welded to the outer peripheral surface of the boss 17. 4. Also, 20 is a main body cover made of synthetic resin,
The main body cover 20 is formed in an inner shape with an open upper surface, and is fixed to the boss 17 and forms the lower part of the outer shell of the boss portion 11 and the spoke portions 13;
Furthermore, a horn pad 2 is provided above the body cover 20.
1 is supported so as to be vertically movable.

The interior of the boss 11 is a through hole 22 into which the -F end of the steering shaft 14 is fitted with serrations J3 and a taper. Further, a fitting hole 23 into which the upper end of the boss 17 is fitted is formed in the center of the boss plate 18, and a (tl positioning protrusion 24) is formed at the periphery of the fitting hole 23. It is formed so as to avoid bending upward.Furthermore, medium-sized medium-sized L1 through holes 25 are formed in the bottom surface of the main body cover 20. Furthermore, an opening 26 is formed in the center of the horn pad 21 and faces the boss 17 from above, and this opening 26 is closed by the body 21.

Next, the vibration suppressing neck 31 disposed within the boss portion 11 and above the second boss 17 will be explained with reference to FIGS. 1 and 2.

Reference numeral 32 denotes a flat root-shaped support plate made of metal, for example, and this support plate 32 is fixed on the boss 17 and the boss plate 18, and has the same substantially rectangular shape as the boss plate 18. . A through hole 33 is provided in the center of the support 14 brake 1, 32 through which the upper end of the steering cylinder 1 shaft 14 passes.
is formed. In addition, a pair of locking pieces 34 are formed by cutting upward, for example, on symmetrical positions sandwiching the through hole 33, and locking holes 35 are formed in these locking pieces 34, respectively. has been done. Furthermore, by cutting and raising the engaging pieces 34, positioning holes 36 are formed on the outer peripheral sides of these engaging pieces 34, respectively, into which the positioning projections 24 of the boss plate 18 are engaged.

Reference numeral 37 denotes a divine body formed in a rectangular parallelepiped shape, for example, made of metal, and in the center of this divine body 31, there is an opening 38 that is approximately circular in plan view and faces the boss 17 from above. Thirteen openings 38 are formed, and the diameter of the openings 38 is large enough to allow the washers 1715 and the nuts 1-16 to be inserted therethrough. Reference numeral 39 designates approximately four square support bodies made of an elastic material such as rubber, and there are, for example, four supports. These supports 39 have their lower ends fixed to each corner of the upper surface of the support plate 32 by vulcanization adhesive or the like, and their upper ends attached to each corner of the lower surface of the weight body 37. They are each fixed by sulfur adhesion or the like, and this weight body 37 is elastically connected to the support plate 32.

Reference numeral 41 denotes a nut guide body made of synthetic resin or the like that has a certain degree of rigidity. A bottom surface portion 44 bent from the lower end of the guide portion 42 toward the inner circumferential side is integrally molded. The height in the axial direction of the first gad portion 42 is set to a height of 1 - 30 cm from the upper surface of the support play i to 32 than the height of the divine body 37. The opening 3 of the weight body 31 has 917 yen recorded in the −.
The diameter J of 1 monme is smaller than ', r-], and the inner diameter is 1. Nwassi 111! i, 1'3 and boss 17 are l
It is large enough to be passed through. On the other hand, the outer diameter of the flange portion 43 marked J is larger than the diameter J of the first portion 38 compared to that of the weight body 37. Each faction of support play 1 to 32 +l
- A pair of one-line locking protrusions 45 are formed which are respectively engaged with the IL 35 from the inside. Furthermore, the support play 1
At the center of the bottom part 44 joined to the tops of the support plate 32, there is a t1 hole 4G that overlaps the through hole 33 of the support plate 32.
is formed, and this through hole 46 is connected to the washer 15.
and 5° smaller in diameter than nut 16,
In assembling, first, the guide part 42 of the nut guide body 41 is inserted into the opening 38 of the weight body 37 from above, and the lower end of this guide part 42 is fitted between the pair of locks g34 of the support plate 32. The bottom surface portion 44 of the nut guide body 41 is joined to the support plate 32 soil. Then, while the lower end portion of the nut guide body 41 is elastically deformed, the pair of locking protrusions 45 are respectively engaged with the respective locking holes 35 of the support plate 32, and the nut guide body 41 is attached to the support plate 32.
is locked and temporarily fixed. In this state, the outer circumferential surface of the guide portion 42 faces the circumferential surface of the opening 38 of the weight body 37 with a gap therebetween, and the flange portion 43 of the nut guide body 41 forms a gap from above on the top surface of the weight body 37. Hold and face.

Next, when the upper end of the steering shaft 14 is fitted into the through hole 22 of the boss 17 on which the main body cover 20 etc. are assembled, the positioning protrusion 24 of the boss plate 18 is inserted into the positioning hole 36 of the support plate 32. This support plate 32 is joined onto the boss plate 18 so that it is engaged with the boss plate 18.

In this state, the upper end of the steering shaft 71-14 is connected to the support plate 32 and the bottom surface of the nut guide body 41.
It passes through the n-hole 33.46 of No. 4 and projects upward. Then, the washer 1 is inserted into the guide portion 42 of the nut guide body 41.
5 and the nut 16 from above, and attach the washer 1 to the upper DEN of the steering shaft 14 as shown in FIG.
Screw 16 into oak 1 through 115. In this state,
A boss 17 is fixed to the steering shaft 14, and the support plate 32 and the nut guide body 4 are fixed to the steering shaft 14 by the boss 17, the boss sprays 1 and 18, and the washer T715.
1 is sandwiched between the support plate 32 and the nut guide body 4 with respect to the boss 11 and the boss plate 18.
1 is fixed. In this way, the initial pressure 1.
l VLn31 is set (j i-J).

When assembling such a steering wheel to the steering shaft 14 1), the nut guide body 41 serves as a guide for the washer 15 and the σ small nuts 1-16, and these washers 1715 and the nut 1 -16
Because it doesn't move around, it's dark blue and size. Further, due to the engagement between the locking hole 35 and the locking protrusion 45, the nut guide body 4
1 is a supporting play]・It is also temporarily fixed at 32,
Improves ease of assembly.

Furthermore, when the steering wheel is used, even if there is vibration caused by the engine operation of the automobile or vibration caused by driving, the weight body 37 elastically supported by the support plate 32 fixed to the boss 11 side allows the &lh is absorbed,
MQ and prevent steering wheel vibration.

Then, the support body 39 is elastically deformed and the weight body 31 vibrates relative to the boss 17J3 and the support 1\ plate 32 side, but especially when the weight body 37 shakes greatly, as shown in FIG. , the inner peripheral surface of the opening 38 of this weight body 37 touches the outer peripheral surface of the guide body 42 of the nut guide body 41, so that the maximum amplitude of the weight body 37 is regulated.
Excessive vibration of υ1 is suppressed.

Furthermore, due to some reason, for example, deterioration of the material of the support body 43 after long-term use or impact during an accident, three of the support bodies may break as shown in FIG.
If the joint portion of the support body 39 to the support plate 32 or the weight body 37 peels off, the weight body 37 may become attached to the support plate 32 or the weight body 37.
When the weight body 37 is separated from the support plate 32 from below, the guide 542 of the nut guide body 41 presses the weight body 37 from below.
In addition to holding 7 from the horizontal ij direction, S! ! The flange portion 43 of the nut guide body 41, which has a diameter larger than the opening 38 between the images on the I body 31 and presses the weight body 31 from above, prevents the weight body 37 from flying to the surroundings. be done. However, the flange portion 43, which cannot be inserted through the opening 38, is left behind, and the weight body 37 does not move beyond a certain distance. Therefore, other parts of the steering wheel, such as the body cover 20, the horn pad 21, or the horn mechanism (not shown), can be prevented from collapsing, and the weight body 37 can be prevented from hitting the harness of the horn mechanism. It is safe because it can prevent the weight 17 from flying out and causing damage to the driver's fee, etc.

According to the above configuration, one nut guide body 41
As a result, it is possible to guide the nut 16 during assembly, regulate the maximum amplitude of the weight body 37 during normal use, and prevent the weight body 31 from flying off when the support body 39 breaks, thereby reducing waste in the 71-1 construction. do not have.

In the above embodiment, the boss 17, the support plate 32, and the nut guide body 41 are commonly fastened to the steering shaft 14 by one nut 16.
It may be fixed with screws or the like at a different position.

In addition, in the previous embodiment, both ends of the support 39 were vulcanized and adhered to the boss 1γ side and the weight body 37 side, but in accordance with FIG. The structure of the present invention can be applied to a structure in which both ends of the screw are fixed to the boss 17 side and the weight body 31 side by mechanical means, respectively. Next, this second embodiment will be explained.

In this embodiment, the elastic support body 39 includes a cylindrical portion 51, a weight side flange portion 52 bent from the upper end of the cylindrical portion 51 toward the outer circumference, and an inner portion from the end of the cylindrical portion 51. It consists of a boss-side seven flange portion 53 bent toward the circumferential side. The cylindrical portion 51 is passed through a through hole 55 formed in the center of the weight body 54, which is the main component of the weight body 31. J. A shell j16 that holds down a part of the weight body 37 is fixed to the upper surface of the weight body body 54 with a screw 51, but this holding device! 1G and the weight main body 54, the weight body side flange portion 52 is fixed to the weight body 37 side. And, in the center of the second presser 56,
An opening 38 is formed through which a guide portion 42 of a nut guide body 41 similar to that of the first embodiment is inserted while maintaining a gap. The diameter of this opening part 38 is smaller than the outer diameter of the flange part 43 of the L nut 1 guide body 41.

Also, the -1 end of the steering wheel 11) 1-14 is ξ
The support plates 1 to 32, which have the through hole 33 through which they are passed through, are fixed in the center by the boss 17, nut 16, etc. through the guide (the bottom part 44 of A41 and the washer). 1, which is fixed to the boss 17, and the support plate 32 and the boss spray 1.
13, the boss side flange portion 53 is sandwiched between the boss 1 and the boss 1.
It is fixed on the 7 side.

Also in this second embodiment, the nut guide body 41 regulates the maximum amplitude of the weight body 37, and the flange portion 43 of the same nut guide body 41 is located above the opening 38 of the weight body 37, so that the support body 39 This prevents the weight body 31 from flying away when it breaks.

FIG. 7 shows a third embodiment of the present invention, in which at least the guide portion 42 of the nut guide body 41 is
A plurality of ribs 61 extending in the axial direction are integrally formed on the outer circumferential surface of. J3, illustrated oak 1-guide body 4
1, each rib 61 extends to the 1-face of the flange portion 43.
I'm letting you do that.

According to this configuration, the splitting of the nut guide body 41 is improved due to the presence of the rib G1. In addition, if the weight body 37 swings significantly, a rib 61 is formed on the inner peripheral surface of the opening 38.
However, the damage caused by contact between the weight body 31 and the guide body 41 is reduced.

Furthermore, FIGS. 8 to 10 show a fourth embodiment of the present invention, and in this embodiment, the guide portion 42 of the nut guide body 41 has a divided piece shape.

However, this guide portion 42 has a plurality of I!s extending vertically and lined up in one circumferential direction. It consists of a plate-shaped portion 66. Further, each plate-shaped portion 6G of the put guide body 41 is provided on the inner circumferential surface of the opening 38 of the weight body 37, respectively.
A plurality of grooves 61 are formed. In addition to this,
The J-type weight body 37 has a flange portion 43 of the nut-/J-id rest 41 (V!), and a concave portion 68 is formed in the upper surface portion 113, and each support 14 body Four parts 69, in which three earth parts are respectively located, are formed at each corner of the 1: surface side.

According to this configuration, when the weight body 37 shakes one hand,
The nut guide (guide portion 42 of A41) to this weight body 37
Due to the small contact area of Furthermore, by aligning the shape of the dark 1-1 portion 38 of the weight body 43 with the shape of the guide portion 42 of the nut guide body 41, it is possible to square the weight body 37 with the same outer diameter diameter. Can be done. Zu°Nawa 13, - Weight inside the membrane! Although it is better for the A37 to be as heavy as possible, it is possible to maximize the width of the weight body 31 in the limited space inside the steering wheel.

〔Effect of the invention〕

According to the present invention, when the weight body is inserted onto the support plate fixed to the boss side with a gap maintained through the opening of the weight body elastically connected to the support plate, and b. Since the nut guide body has a guide part through which a nut for fixing the boss can be inserted, and a flange part which is positioned above the weight body and cannot be inserted through the opening thereof, it is easy to assemble it to the steering shaft. By guiding the nut, assembly becomes easier, and by the guide portion coming into contact with the inner circumferential surface of the opening of the weight, the maximum amplitude of the weight can be regulated. Even if the support made of rubber or the like that supports the weight is broken by some kind of force, the Nara 1-84 body will stop handling the weight, so the weight will fly off. It is safe and will not get lost. Moreover, since one nut guide body has several of the above-mentioned functions, there is no waste in the structure.

[Brief explanation of the drawing]

Fig. 1 shows a first embodiment of the steering wheel of the present invention; Fig. 2 is an exploded perspective view of the vibration suppression aIII device; and Fig. 3 shows the weight body oscillating as above. FIG. 4 is a sectional view of the vibration suppressor υI device part showing the state of the vibration suppressor 11(
Figure 1 is a cross-sectional view of a portion of the device, Figure 2 is a plan view of the entire steering wheel as above, and Figure 6 shows a second embodiment of the present invention. 7 is a cross-sectional view of the at neck attachment 8IS, and a perspective view of the 7 thick butt guide body, showing the third embodiment of the present invention.
FIG. 8 shows a vibration suppressor according to a fourth embodiment of the present invention. 11 is an exploded perspective view of the device, FIG. 9 is a horizontal cross-sectional view of the upper vibration suppressor 1, 11, and FIG. 10 is a cross-sectional view taken along line XX in FIG. 14...Steering shirt l-116...Natsuto, 1
1...Boss, 18...Boss play that forms the boss side fixing part on the boss and b (..., 31...' + ii in the first suppression Ruri, :3
2... Support plate, 37... Weight body, 38... 1 part for 1n1, 39... Support body, 41... Nut guide body, 42
...Guide part, 43...Flange part. Table 1

Claims (1)

[Claims] (1) A boss through which the steering shaft passes and is fixed to the steering shaft with a nut, and a vibration suppressor disposed on the boss, the vibration suppressor being fixed to the boss side integrally with the boss. a support plate fixed to the boss; a weight body facing the boss from above and having an opening in the center through which the nut is inserted; a supporting body having elasticity that is interposed between the weight bodies and connecting the two; the support plate is inserted into the opening of the weight body with a gap therebetween, and the nut can be inserted through the inside of the support plate; and a flange portion provided above the guide portion and located above the weight body, the flange portion having a size that cannot be inserted through the opening of the weight body. steering wheel.