JPH0737882U - Vehicle handle - Google Patents

Abstract

(57) [Abstract] [Purpose] A steering wheel of a vehicle that prevents vibration and chatter at high frequencies from occurring during driving, and also effectively cushions shocks during jumps to prevent fatigue due to vibration. I will provide a. [Structure] A handlebar 13 and a reinforcing crossbar 17
Both end portions 17a of the above are rotatably connected via a pivot shaft 15. The pivot shaft 15 is inserted into an insertion hole 17b having a hole size that allows the handlebar 13 to bend due to an impact force. The pivot shaft 15 is the handlebar 13
It is supported by a bracket 14 fixed by welding.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle handle in which a handlebar is provided with a crossbar for reinforcement.

[0002]

[Prior art]

 For example, a handlebar 1 of an off-road vehicle, which is one of motorcycles, is reinforced by attaching a crossbar (iron pipe) 3 to a handlebar 2 as shown in FIG. Both ends of the crossbar 3 are fixed by the welded portions 3, and this welding method is also disclosed in, for example, Japanese Patent Laid-Open No. 55-19457.

[0003]

[Problems to be solved by the device]

 As described above, when the crossbars 3 are connected by welding, the rigidity is increased, so that high-frequency vibrations due to engine vibrations are transmitted to the steering wheel, which may cause so-called chattering. There are cases where you can't get one more. Further, when the vehicle jumps and lands, the crossbar 3 having an integral structure largely resists, so the shock may be transmitted to the driver as it is.

Therefore, the present invention prevents the occurrence of high frequency vibration and chatter, and also effectively alleviates the shock generated due to jumps, etc. to prevent fatigue due to vibration and improve riding comfort. The present invention aims to provide a steering wheel for the vehicle.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention comprises a handlebar extending in the vehicle width direction, in which both ends of a reinforcing crossbar are rotatably connected via pivot shafts.

In addition, the pivot shaft is inserted into an insertion hole having a hole size that allows the handlebar to bend due to the impact force received by the vehicle body, and connects the handlebar and the crossbar. Is preferred.

Further, it is preferable that the pivot shaft is supported on a bracket attached to the handlebar, and the bracket is welded to the handlebar.

[0008]

[Action]

 According to the present invention, since the crossbar is rotatably connected to the handlebar via the pivot shaft, the handlebar is more easily allowed to bend as compared with the structure in which the crossbar is integrated. , The rigidity of the handle as a whole is suppressed without reducing its strength, and on the other hand, it exerts the required reinforcing function as a reinforcing member via the pivot shaft when a shock is applied. Therefore, the feeling of stiffness when operating the steering wheel is reduced, and the occurrence of chatter is reduced as the natural frequency is lowered.

When the pivot shaft is inserted into an insertion hole having a hole size that allows the handlebar to bend due to the impact force received by the vehicle body, even if a shock occurs due to a jump or the like, the handlebar Deformation of the bar is allowed, which reduces shock and improves riding comfort.

Further, when the pivot shaft is provided, when the bracket supporting the pivot shaft is attached to the handlebar by welding, the attachment position is fixed and the assembly becomes easier as compared with the case where the hugging type clamp is adopted. .

[0011]

【Example】

 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. 1 to 3 show a case where the present invention is applied to a steering wheel of a motorcycle, particularly an off-road vehicle.

As shown in FIG. 1, a handle 12 is attached via a handle bracket 11 to an upper bracket 10 fixed to an upper portion of a fork (not shown) that supports a front wheel. The handle 12 is composed of a handlebar 13 and a crossbar 17, and has a grip 18 at its end. The handlebar 13 has a bent pipe shape, and brackets 14 are attached to the left and right warped portions by welding, respectively.

As shown in FIG. 2, each bracket 14 is fixed in a U shape with its groove opening facing upward, and a bolt insertion hole 14b is formed in one of the front and rear wall portions 14a. Moreover, a screw hole 14c is formed in the other wall. A pivot shaft (hexagon socket head cap bolt) 15 is attached through these holes 14b and 14c.

A collar 16 is attached to the outer periphery of the pivot shaft 15. On the other hand, the cross bar 17, as shown in FIG. 3, is a solid bar, and the end portions 17a on both sides thereof are formed in a crushed shape, and the thickness of the end portion 17a is as shown in FIG. The length of the collar 16 is set to be shorter than the length of the collar 16 substantially corresponding to the facing distance of the brackets 14, and each end 17a is inserted into the crossbar 17 in a slightly elongated oval shape along the longitudinal direction, as shown in FIG. The hole 17b is formed.

As shown in FIG. 2, the end portion 17a of the crossbar 17 is attached by a pivot shaft 15 via a collar 16 so that the tightening force by screwing the pivot shaft 15 into the screw hole 14c is increased. 16 and does not act on the end 17a of the crossbar 17. Further, a rubber damper 18, for example, is interposed between the end portion 17a and the one wall portion 14a as a cushioning material for preventing rattling. With this structure, the cross bar 17 is rotatably supported around the pivot shaft 15 in a state where the cross bar 17 receives an appropriate rotation resistance force by the rubber damper 18. A movable gap 19 is left between the collar 16 and the insertion hole 17b, as shown in FIG. 3, corresponding to the longitudinal direction of the crossbar 17.

The steering wheel of the vehicle of the above embodiment operates as follows. That is, since the crossbar 17 is rotatably connected to the handlebar 13 via the pivot shaft 15, the crossbar 17 having a structure integrated with the crossbar 17 acts as a rigid body as compared with the case of the present invention. In, it becomes easier to allow the handlebar 13 to bend.

Therefore, the rigidity of the handle as a whole is suppressed, and the natural frequency of the handlebar 13 decreases due to the separation of the handlebar 13 and the crossbar 17. Therefore, the vibration of the handle at a high frequency due to the engine vibration is reduced. Disappear. On the other hand, at the time of shock action, the crossbar 17 exerts a function of resisting tension and compression via the pivot shaft 15. As a result, the crossbar 17 has a handle reinforcing function.

Further, since the pivot shaft 15 is inserted into the insertion hole 17b of the crossbar 17 through the collar 16 with the gap 19 present, for example, even if an impact force is applied to the handle 12, the gap 19 is formed. The presence of the bar allows the handlebar 13 to bend, which reduces the shock.

Further, in providing the pivot shaft 15, when the clamp to which the pivot shaft 15 is attached is attached to the handlebar in a manner of hugging the handlebar 13, the clamp is turned around with respect to the handlebar 13. However, it is difficult to position the pivot shaft 15 positionally, and it takes time to assemble. On the other hand, as in this embodiment, when the pivot shaft 15 supporting the crossbar 17 is supported by the bracket 14 attached to the handlebar 13 by welding, the mounting position of the bracket 14 is fixed from the beginning. There is an advantage that the crossbar 17 can be easily assembled.

Note that, unlike the above embodiment, the crossbar 17 may be formed by a pipe. Further, the end portion 17a of the crossbar 17 is formed in a U-shape, and the bracket 14 is formed in a plate shape. The pivot shaft 15 is screwed into the end portion 17a, and an insertion hole formed of a long hole is formed in the bracket 14. It may be formed on the side.

Further, the present invention can be applied to a steering wheel of a motorcycle as well as other similar vehicles such as a buggy.

[0022]

[Effect of device]

 As described above, according to the steering wheel of the vehicle of the present invention, the rigidity of the steering wheel as a whole is suppressed and the natural frequency is lowered while maintaining the required reinforcing function of the steering wheel through the pivot shaft as a reinforcing member. With this, it is possible to prevent high-frequency vibrations from being transmitted to the hands of the driver.

In addition, when the pivot shaft is inserted into the insertion hole having a hole size that allows the deformation of the handlebar, even if a shock is applied to the handle due to a jump or the like, the presence of the insertion hole causes the handlebar to move. The flexing of the car is allowed, which alleviates the shock and improves the riding comfort. Furthermore, when the pivot shaft is supported by a bracket that is attached to the handlebar by welding, the mounting position of the bracket is fixed and assembly is easier than when a hugging clamp is used.

[Brief description of drawings]

FIG. 1 is a front view showing a handle according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG. 1 showing a main part of the same embodiment.

FIG. 3 is a sectional view taken along line III-III in FIG. 2 showing a main part of the embodiment.

FIG. 4 is a front view showing a handle provided with a conventional crossbar.

[Explanation of symbols]

12 ... Handle, 13 ... Handlebar, 14 ... Bracket, 15 ... Bolt (pivot shaft), 17 ... Crossbar,
17a ... Crossbar end, 17b ... Insertion hole.

Claims (3)

[Scope of utility model registration request] 1. A handlebar extending in the width direction of a vehicle,
A vehicle handlebar in which both ends of a reinforcing crossbar are rotatably connected via a pivot shaft. 2. The pivot shaft according to claim 1, wherein:
A handle of a vehicle which is inserted through an insertion hole having a hole size that allows the deformation of the handlebar due to the impact force received by the vehicle body to connect the handlebar and the crossbar. 3. The vehicle handle according to claim 1, wherein the pivot shaft is supported by a bracket attached to the handlebar, and the bracket is welded to the handlebar.