KR100983468B1

KR100983468B1 - Parking brake apparatus

Info

Publication number: KR100983468B1
Application number: KR1020080085926A
Authority: KR
Inventors: 정상진
Original assignee: 현대 파워텍 주식회사
Priority date: 2008-09-01
Filing date: 2008-09-01
Publication date: 2010-09-24
Also published as: KR20100026788A

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a braking device, and more particularly, to a parking braking device that mitigates the shock generated during braking operation and prevents damage.

The present invention, the inner gear provided on the output shaft; An outer gear that is gearably engaged with the inner gear; And a parking sprag for restraining or releasing the outer gear by transmitting the operating force of the shift lever.

Automobiles, vehicles, brakes, brakes, parking brakes

Description

Parking Braking System {PARKING BRAKE APPARATUS}

In general, the parking brake has a parking sprag pressurized by the parking rod because the driver operates the shift lever so that the shift cable is linearly moved, the manual control lever and the detent lever rotate, and the detent lever pushes the parking rod. Rotates around the supporter to constrain the parking gear installed on the output shaft.

Here, the parking sprag is formed at the end corresponding to the parking gear, so that when the parking sprag is rotated and the fork is caught by the gear teeth of the parking gear, the parking gear and the output shaft are restricted from rotation.

As a result, the driver may change the shift lever to the parking position by the power transmission members as described above to perform the operation of restraining the parking gear and the output shaft.

By the operation as described above, it is possible to prevent the vehicle traveling along the inclined plane irrespective of the driver's intention.

Parking brake system according to the prior art is a brake for the parking while the fork of the parking spike and the gear gear of the parking gear is engaged, the vehicle does not stop completely because there is no separate shock absorber between the groove of the fork and gear teeth If the braking operation is started when there is a phase difference, the braking operation is performed after the parking gear is rotated by the phase difference, and the parking gear and fork collided with each other may cause discomfort to the occupant, and damage to the parking gear and fork There is a problem that can occur.

Therefore, there is a need for improvement.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a parking braking device that can prevent the ride feeling from deteriorating when the braking operation is started and can suppress breakage.

In order to achieve the above object, the present invention, the inner gear provided on the output shaft; An outer gear that is gearably engaged with the inner gear; And a parking sprag to which the operating force of the shift lever is transmitted to restrain or release the outer gear. The outer gear may include an inner tooth that is meshed with a gear value of the inner gear; And an outer tooth engaged with the fork of the parking sprag; A buffer part provided between the outer gear and the inner gear; The buffer unit, the fixed panel in close contact with the inner gear; And an elastic member extending from the fixed panel and interposed between the gear tooth and the inner tooth; The elastic member includes a leaf spring extending in the space direction between each of the inner tooth and the gear tooth from the edge of the fixed panel, the leaf spring is characterized in that the two curved panels are arranged to form an oval shape It provides a parking brake device.

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Parking braking apparatus according to the present invention is the outer gear and the inner gear is connected to the fluid, the cushioning portion is provided between the outer gear and the inner gear, it is possible to buffer the collision generated after the braking operation is initiated by the braking operation It is possible to suppress the deterioration of the riding comfort that can be caused to facilitate the occupant's comfort, and there is an advantage that can be prevented damage to the parking sprags, outer gear and inner gear.

Hereinafter, an embodiment of a parking braking apparatus according to the present invention will be described with reference to the accompanying drawings.

For convenience of explanation, the parking brake of the vehicle will be described as an example.

In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or custom.

Therefore, definitions of these terms should be made based on the contents throughout this specification.

1 is a configuration diagram showing a parking brake according to an embodiment of the present invention, Figure 2 is an exploded perspective view showing a shock absorbing portion of the parking brake according to an embodiment of the present invention.

1 and 2, an embodiment of a parking brake device according to an embodiment of the present invention includes an inner gear 74 provided at an output shaft and an outer gear that is capable of being fluidly engaged with the inner gear 74. A gear 72 and a parking sprag 50 to which the operating force of the shift lever is transmitted to restrain or release the outer gear 72 are included.

When the braking operation is started and the parking sprag 50 is rotated, the fork 52 provided in the parking sprag 50 restrains the outer gear 72 to perform the braking operation.

At this time, the inner gear 74 fixed to the output shaft is geared so as to be able to flow with the outer gear 72 so that the fork 52 and the outer gear 72 may be operated even when the braking operation is started in a state where the output shaft is not completely stopped. After the gear is bitten, the impact of the fork 52 and the outer gear 72 is cushioned while the outer gear 72 is flowed from the inner gear 74.

Here, the outer gear 72 is formed in a ring shape, and the inner tooth 72b is formed on the inner wall of the ring with the gear tooth 74a of the inner gear 74, and the parking sprag 50 on the outer wall of the ring. ), The fork 52 and the outer tooth (72a) to be meshed is formed.

Since the groove portion formed between the inner tooth 72b and the inner tooth 72b is formed wider than the thickness of the gear tooth 74a of the inner gear 74, the gear tooth 74a and the inner tooth 72b are in a geared state. Even if the rotation of the outer gear 72 is restricted in the inner gear 74 is able to flow by the distance between the gear tooth 74a and the inner tooth 72b.

Thus, when the fork 52 of the parking sprag 50 is inserted into the groove portion between the outer tooth 72a and the outer tooth 72a, the rotation of the outer gear 72 is constrained, and the inner tooth 72b and the gear tooth 74a are confined. As the inner gear 74 is further rotated by the interval therebetween, the shock generated between the parking sprag 50 and the outer gear 72 can be buffered.

In addition, since it further includes a buffer 80 provided between the outer gear 72 and the inner gear 74, when the inner gear 74 flows a predetermined amount in a state in which the outer gear 72 is restrained, the gear tooth ( Since the collision between the 74a and the inner tooth 72b is prevented, the vibration generated by the collision can be suppressed, and the fork 52, the outer tooth 72a, the inner tooth 72b and the gear tooth 74a can be prevented from being damaged. Will be.

The shock absorbing portion 80 includes a fixing panel 82 in close contact with the inner gear 74 and an elastic member 84 extending from the fixing panel 82 and interposed between the gear teeth 74a and the inner teeth 72b. Include.

The fixing panel 82 is formed in the same manner as the side shape of the inner gear 74, and is installed in the output shaft so as to be idling, so that the fixing panel 82 can be in close contact with the side of the inner gear 74.

The elastic member 84 includes a leaf spring extending from the rim of the fixed panel 82 in the lateral direction between the inner teeth 72b and the gear teeth 74a, wherein the leaf springs have two curved panels elliptical in shape. Since it is arranged so as to be formed between the inner tooth (72b) and the gear tooth (74a) it is possible to cushion the collision while compressing a predetermined amount when the two components collide.

Looking at the operation of the parking brake according to the present invention configured as described above are as follows.

First, when the driver operates the shift lever and the shift cable is linearly moved, the manual control lever 10 and the detent lever 20 are rotated, and the detent lever 20 pushes the parking rod 30 so that the parking rod As the parking sprag 50 pressurized by the 30 rotates around the supporter 40, the fork 52 of the parking sprag 50 is inserted into the groove between the outer teeth 72a of the outer gear 72. As a result, the outer gear 72 is restrained.

At this time, the outer gear 72 is constrained to rotate by the fork 52 and the parking sprag 50, but the inner gear 74 is inner because the gear tooth 74a and the inner tooth 72b are gearably movable. The gear 74 is rotated by a predetermined amount.

After the outer gear 72 is restrained in this way, while the inner gear 74 flows a predetermined amount, the collision generated between the fork 52 of the parking sprag 50 and the outer tooth 72a is cushioned, and the inner tooth 72b and The cushioning effect is doubled by the elastic member 84 interposed between the gear teeth 74a.

Thereby, it becomes possible to provide the parking braking device which can prevent the ride feeling from worsening when the braking operation is started, and can suppress the damage.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and various modifications and equivalent other embodiments are possible for those skilled in the art to which the art pertains. Will understand.

In addition, although the parking braking device for a vehicle has been described as an example, this is merely exemplary, and the parking braking device of the present invention may be used for a product other than the vehicle.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

1 is a block diagram showing a parking brake device according to an embodiment of the present invention.

Figure 2 is an exploded perspective view showing a shock absorbing portion of the parking brake according to an embodiment of the present invention.

50: parking sprag 52: fork

72: outer gear 74: inner gear

80: shock absorber 82: fixed panel

84: elastic member

Claims

An inner gear provided on the output shaft;

An outer gear that is gearably engaged with the inner gear; And

And a parking sprag to which the operating force of the shift lever is transmitted to restrain or release the outer gear;

The outer gear is,

An inner tooth geared with a gear value of the inner gear; And

An outer tooth engaged with the fork of the parking sprag;

A buffer part provided between the outer gear and the inner gear;

The buffer part,

A fixed panel in close contact with the inner gear; And

An elastic member extending from the fixed panel and interposed between the gear tooth and the inner tooth;

The elastic member includes a leaf spring extending in the space direction between each of the inner tooth and the gear tooth from the edge of the fixed panel, the leaf spring is characterized in that the two curved panels are arranged to form an oval shape Parking brake system.

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