JPH0539977Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a parking brake operating device for operating a parking brake for a vehicle.

[Prior Art] Generally, this type of parking brake operates by rotating an operating lever to which a grip is attached.
The engagement position of the pole 12 with respect to the sector 10 shown in FIG. 4 is changed. The parking brake is set to the operating state by pulling the brake operating cable by rotating the operating lever.

Here, the pawl 12 is rotatably biased by a coil spring or the like in the direction A in FIG. By pressing down, the engagement between the pawl 12 and the sector 10 can be released, and by rotating the operating lever while pressing down on the knob, the handbrake can be set to the operating state without making any impact noise. can.

However, in the direction of rotation of the operating lever, the pawl 12 can move while disengaging from the sector 10 against the biasing force of the spring without pressing down on the knob. In general, the operating lever is rotated without pressing down on the knob.

[Problems to be solved by the invention] As described above, when the operating lever is rotated without pressing down the operating knob, the pawl 12 and the sector 10 engage intermittently, causing a continuous impact sound. This will occur.

The pawl 12, which is usually made of metal, vibrates due to the impact during the intermittent engagement, amplifying the impact sound, which increases the noise inside the vehicle.

Therefore, the purpose of the present invention is to solve the above-mentioned conventional problems and absorb the impact vibration when the sector and the pole engage with each other, while having a simple structure. An object of the present invention is to provide a parking brake operating device that can reduce noise during engagement.

[Means for Solving the Problems] The present invention includes: an operating lever for operating a parking brake; a fixed sector that rotatably supports this operating lever and has teeth on its outer periphery; a pole rotatably supported and capable of engaging the sector; an operating knob retractably disposed on a grip portion of the operating lever; movement of the operating knob engages the pole with the sector; a transmission member that rotationally displaces the pole between a position and a non-engaged position; and a biasing member that biases the pole so as to constantly engage the sector via the transmission member by biasing the operation knob to protrude. In a parking brake operating device having a mass damper connected to the above-mentioned pole, the pole,
The mass damper is configured to attenuate the vibration of the pole upon sector impact.

[Function] The present invention has a structure in which a mass damper is connected to a pole.

Therefore, when the pole moves while disengaging from the sector against the biasing force of the biasing member, such as when the operating lever is rotated without pressing down the operating knob. Even if the pole intermittently engages with the sector, the vibration of the pole due to the impact at this time can be damped by a mass damper connected to the pole.

In other words, this type of mass damper has a structure in which the weight is supported by an elastic body such as rubber, so when the pole vibrates together with the elastic body, the mass of the weight connected to one end of this elastic body is Since this is large, the vibration of the pole can be quickly damped through the elastic body.

Therefore, compared to the conventional pole structure in which no active damping force is applied from the outside, and in which the above-mentioned impact noise is amplified by the vibration of the pole, it has a considerable effect of reducing the noise. be able to.

[Embodiments] The present invention will be specifically described below with reference to illustrated embodiments.

In FIG. 1, the sector 20 has teeth 20a on the fan-shaped outer periphery with the center position O1, and
It is fixed at 2.

This sector 20 is provided with an operating lever 30 that is rotatable about a rotating shaft 24 located at the center O1. This operating lever 30
A brake actuation cable 32 is connected to one end on the right side of the center O1, and by pulling the cable 32 by rotating the operating lever 30, the parking brake is actuated.

Further, one end on the left side of the center O1 of the operating lever 30 has a shape in which an end inclined diagonally upward extends horizontally, and the horizontal end is curled into a cylindrical shape to form a horizontal cylindrical part 30a. A grip 34 is inserted into and supported.

Further, at the end of the grip 34, a pushable operation knob 36 is disposed so as to be freely protrusive and retractable. stoppa 30
A compression coil spring 40, which is an example of a biasing member, is disposed between the spring 40 and the spring 40b.

The operation knob 36 is made of resin, for example,
A rod 50, which is an example of a transmission member having one end fixed to a shaft, is connected within this resin.

Next, regarding the rod 50 and the pole 60 that rotates in conjunction with the movement of the rod 50, a second
This will be explained with reference to the figures.

First, the pole 60 will be explained. This pole 60 is made of a metal material and is formed in, for example, a dogleg shape.
It is rotatably supported approximately at its center by a pin 62.

Further, the pawl 60 has teeth 2 of the sector 20.
It has a claw 64 that engages with the claw 6 of the pole 60.
The end opposite to the side having the rod 50 is
The rod 50 has a pin connecting portion 66 that is rotatable with respect to the pole 60.
swings around pin 62, sector 2
0, it can be set to an engaged position and a non-engaged position.

As a characteristic feature of this embodiment, a mass damper 70 is connected between, for example, the pin 62 of the pole 60 and the pin coupling portion 66. This mass damper 70 includes a rubber 72 which is an example of an elastic body fixed to the pole 60 by screws, for example.
and a weight 7 connected to the free end side of this rubber 72.
4 (for example, made of cast metal).

Next, the effect will be explained.

The compression coil spring 40 presses and biases the operating knob 36 so that it always protrudes from the grip 34, and by biasing the operating knob 36 to protrude, the pawl 60 is pushed through the rod 50 into the engagement teeth of the sector 20. It acts to engage and bias 20a.

Here, if you want to operate the parking brake, rotate the operating lever 30 around the center 01, and engage the pawl 64 of the pawl 60 with the teeth 20a of the sector 20 at this rotated position. 32 can be maintained in a tensioned state, and the parking brake operating state can be maintained.

In addition, when applying the brake, the grip 34 can be lifted diagonally upward, but at this time, the operation knob 36
It is not necessarily necessary to press . That is,
This is because the pawl 64 can move in the above rotational direction while disengaging from the engagement tooth 20a against the biasing force of the spring 40.

At this time, the pawl 64 and the teeth 20a engage intermittently, but in this embodiment, it is possible to reduce the impact sound at this time.

That is, the impact sound generated by the intermittent engagement is generated when the pawl 64 of the pawl 60 collides with the peak of the engagement teeth 20a of the sector 20, but this sound is caused by the vibration of the pawl 60. This is being encouraged and becoming a noise. Therefore, if the vibration of the pole 60 can be absorbed or attenuated, the above-mentioned impact sound can be reduced.

In this embodiment, the mass damper 7 is attached to this pole 60.
0 is concatenated. Therefore, the pole 60 vibrates integrally with the rubber 72, which is a component of the mass damper 70, but since a weight 74 having a considerable mass is connected to the free end side of the rubber 72, The vibration of the rubber 72, which is an elastic body, is rapidly attenuated, and the pole 6 connecting this rubber 72
The vibration of 0 itself can also be damped.

Therefore, by connecting such a mass damper 70 to the pole 60, the vibration of the pole 60 can be rapidly damped, and the impact noise caused by the vibration of the pole 60 can be significantly reduced. Become.

Note that the present invention is not limited to the above-mentioned embodiments, and various modifications can be made within the scope of the gist of the present invention.

For example, as the mass damper 70 connected to the pole 60, various other types can be adopted as long as it has a structure in which an elastic body and a weight are connected.
The connection position for the connector is not limited to that of the above embodiment. For example, as shown in FIG. 3, a mass damper 70 may be connected to a position between a pin 62 and a pawl 64 on a pole 60.

[Effects of the invention] As explained above, according to the invention, by connecting the mass damper to the pole, even when a striking sound is generated, such as when the pole and the center engage intermittently, the pole can be By rapidly attenuating vibrations using a mass damper, this impact sound can be muffled, contributing to the reduction of in-vehicle noise.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram of an embodiment of a parking brake operating device to which the present invention is applied, and FIG.
A schematic explanatory diagram showing an enlarged view of the part where the mass damper is connected to the pole shown in FIG. 1, FIG. FIG. 2 is a schematic explanatory diagram for explaining the engagement operation of the pole and the sector. 20... sector, 20a... tooth, 30... operating lever, 36... operating knob, 40... biasing member, 50... transmission member, 60... pole, 70...
...mass damper, 72...elastic body, 74...weight.

Claims (1)

[Claims for Utility Model Registration] An operating lever for operating a parking brake; a fixed sector rotatably supporting the operating lever and having teeth on its outer periphery; rotatably supported by the operating lever; a pole that can be engaged with the sector; an operating knob that is retractably disposed on a grip portion of the operating lever; and movement of the operating knob causes the pole to be placed in an engaged position and a non-engaged position with respect to the sector. A parking brake operating device comprising: a transmission member that rotationally displaces the operating knob; and a biasing member that biases the pole so as to constantly engage the sector via the transmission member by biasing the operation knob to protrude. In the above, a mass damper is connected to the above pole, and the pole,
A parking brake operating device characterized in that the vibration of the pole at the time of sector impact is damped by the mass damper.