KR101029592B1 - Toggle type parking brake lever - Google Patents

Abstract

Disclosed is a toggle parking brake lever of a parking brake device for braking a drive shaft when a vehicle is parked. The toggle parking brake lever includes a first lever part fixed to the vehicle body, an equalizer supporting the cable and movably installed in the first lever part, and a release position and a first lever part folded at a predetermined angle with respect to the first lever part. And a second lever portion that rotates between parking positions that extend straight in the rotor. And a connecting link connecting the second lever part and the equalizer, the connecting link pulling the equalizer as the second lever part rotates from the release position to the parking position, and locking plates rotatably installed in the second lever part. And a locking pin projecting from the locking lever to the second lever portion, and having a through hole and a locking hole into which the locking pin is fitted. It is provided with a spring for pressing. And a pressing portion formed on the locking plate to press the locking plate in the direction of separating the locking pin from the through hole and the locking hole. By locking the second lever portion disposed in the parking position, the locking is released only by the driver's operation, thereby preventing the second lever portion from rotating from the parking position to the release position by any external force and impact, thereby preventing the brake from being released. have.

Description

Toggle parking brake lever {TOGGLE TYPE PARKING BRAKE LEVER}

1a and 1b is a side view showing a general toggle parking brake lever,

Figure 2 is a side view showing a toggle parking brake lever according to the invention,

3 is a cross-sectional view taken along line III-III of FIG. 2;

4 is a cross-sectional view taken along the line IV-IV of FIG. 2;

5 is an operation diagram showing the operation of the toggle lever parking locking lever of the present invention the second lever portion locking means,

6 is a cross-sectional view showing a modification of the second lever portion locking means constituting the toggle parking brake lever of the present invention.

＊ Explanation of symbols for main part of drawing ＊

1: body 3: cable

10: first lever part 12: equalizer

14: second lever portion 16: connecting link

20: locking plate 22: axis of rotation

24: locking pin 26: through hole

28: locking hole 30: spring

32: pressurization

The present invention relates to a toggle parking brake lever, and more particularly to a toggle parking brake lever of the parking brake device that can brake the drive shaft when parking the industrial vehicle.

Industrial vehicles such as forklifts, skid steer loaders, excavators, etc., have a parking brake device for generating a braking force when the vehicle is parked, and the parking brake device is a parking brake lever (hereinafter referred to as a "parking lever") for the driver to operate. Abbreviated). The parking lever is connected to a braking part for braking the drive shaft by a cable, and is installed around the driver's seat for convenient operation by the driver.

On the other hand, the parking lever is composed of a toggle lever that can maximize the driver's operating force to pull the cable as much as possible. This is to generate high braking force by pulling the cable with as much force as possible because the industrial vehicle is heavy and loads heavy loads.

1A and 1B show a view of a toggle parking lever. According to this, the toggle parking lever has a first lever part 10 fixedly installed on the vehicle body 1, and the equalizer 12 having a pair of cables 3 fixed to the first lever part 10. Is installed to be linearly movable.

The second lever portion 14 is rotatably connected to the upper end of the first lever portion 10. The second lever portion 14 is a "release position" A, which is folded at a predetermined angle with respect to the first lever portion 10, and a "parking position" (B) which extends in a substantially straight line with respect to the first lever portion 10. Configured to exercise between). Here, the second lever portion 14 rotated to the "parking position" (B) passes through a straight line (ℓ) of the first lever portion 10 at a predetermined angle α with respect to the first lever portion 10. It is configured to be inclined.

The second lever part 14 is connected to the equalizer 12 of the first lever part 10 by the connecting link 16. The connecting link 16 pulls the equalizer 12 of the first lever part 10 as the second lever part 14 rotates from the "release position" (A) to the "parking position" (B). It is composed.

According to this structure, as shown in FIG. 1A, the 2nd lever part 14 arrange | positioned in the "release position" A is pulled out, and it moves to the "parking position" B. As shown in FIG. Then, the second lever portion 14 pulls the connecting link 16 while moving to the "parking position" (B), and as the connecting link 16 is pulled, the equalizer 12 is also pulled to pull the cable 3. Pulled. As a result, the cable 3 is pulled according to the operation of the second lever unit 14 to operate the brake unit connected to the cable 3.

On the other hand, when the second lever portion 14 is disposed in the "parking position" (B) as shown in Figure 1b, one side of the link link 16 interferes with the side wall (14a) of the second lever portion (14) The rotation of the second lever portion 14 is limited. Accordingly, the second lever portion 14 is fixed at the "parking position" B while pulling the cable 3. Here, the cable 3 pulls down the equalizer 12 and the connecting link 16 by elastic means (not shown), wherein the elastic force applied to the equalizer 12 and the connecting link 16 is connected to the connecting link ( One side of 16 acts as a force for continuous close contact with the side wall 14a of the second lever portion 14. Thus, the second lever portion 14 can be fixed in position at the "parking position" (B).

However, the toggle parking lever of this configuration has a problem that the second lever portion 14 disposed in the "parking position" B is rotated to the "release position" A even under a small external force and impact, so that parking is released. have.

That is, the position of the second lever portion 14 is fixed in dependence on the elastic restoring force of the cable 3 in the state of being disposed at the "parking position" (B). Therefore, even a small external force and shock, for example, a physical contact of the driver is rotated from the "parking position" (B) to the "release position" (A) to generate a problem to release the parking. This problem results in the release of the braking of the heavy-duty industrial vehicle, causing a safety accident.

Accordingly, the present invention has been made to solve the above problems, the object of the toggle parking brake that can be prevented from being released by any external force and impact by configuring to release the braking only by the driver's operation To provide a lever.

In order to achieve the above object, the present invention includes a first lever part, an equalizer, a second lever part, a connecting link, and a locking means. The first lever part is fixedly installed on the vehicle body. The equalizer supports the cable and is installed in the first lever part so as to be linearly movable. The second lever portion rotates between a release position folded at a predetermined angle with respect to the first lever portion and a parking position extended to the first lever portion to form a substantially straight line. The connecting link connects the equalizer with the second lever part and pulls the equalizer as the second lever part rotates from the release position to the parking position. The locking means locks the second lever part in the parking position and locks the second lever part in the parking position.

By locking the second lever portion disposed in the parking position, the locking is released only by the driver's operation, thereby preventing the second lever portion from rotating from the parking position to the release position by any external force and impact, thereby preventing the brake from being released. have.

The locking means may include a locking plate rotatably mounted to the second lever portion, a locking pin protruding from the locking plate toward the second lever portion, a through hole and a locking hole into which the locking pin can be fitted; One end is installed on the rotating shaft of the locking plate so as to be supported by the locking plate, and the locking plate is elastically pressurized in the direction of the through hole and the locking hole so that the locking pin is fitted into the through hole and the locking hole. A spring and a pressing portion formed on the locking plate to press the locking plate in a direction of separating the locking pin from the through hole and the locking hole, wherein the through hole is formed in the second lever portion, The locking hole is formed in the connecting link.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the toggle parking brake lever according to the present invention will be described in detail as follows (the same components will be described using the same reference numerals).                     

First, referring to FIG. 2, the toggle parking brake lever of the present invention includes a first lever part 10 fixedly installed on the vehicle body 1, and the first lever part 10 has a pair of cables ( An equalizer 12 to which 3) is fixed is installed so as to be linearly movable.

The second lever part 14 is rotatably connected to the upper end of the first lever part 10. The second lever portion 14 is a "release position" A, which is folded at a predetermined angle with respect to the first lever portion 10, and a "parking position" (B) which extends in a substantially straight line with respect to the first lever portion 10. Configured to exercise between). Here, the second lever portion 14 rotated to the "parking position" (B) passes through a straight line (ℓ) of the first lever portion 10 at a predetermined angle α with respect to the first lever portion 10. It is configured to be inclined.

The second lever part 14 is connected to the equalizer 12 of the first lever part 10 by the connecting link 16. The connecting link 16 pulls the equalizer 12 of the first lever part 10 as the second lever part 14 rotates from the "release position" (A) to the "parking position" (B). It is composed. Here, the connecting link 16 is configured to overlap in a straight line with the second lever portion 14 as the second lever portion 14 is disposed in the "parking position" (B).

On the other hand, the toggle parking brake lever of the present invention is provided with locking means for locking the second lever portion 14 in the "parking position" (B).

As shown in FIGS. 3 and 4, the locking means includes a pair of locking plates 20 that are installed to face both sides of the second lever part 14. The locking plates 20 are configured to be open to both sides or to be retracted inward with respect to the same rotation shaft 22, and the locking pins 24 protruding inward are formed at the ends thereof, respectively.                     

The locking means has a pair of through holes 26 formed in the second lever portion 14 and locking holes 28 formed in the connecting link 16 so as to be aligned with these through holes 26. The through hole 26 and the locking hole 28 are configured so that the locking pin 24 of the locking plate 20 is fitted, and the second lever portion 14 and the connecting link 16 are fitted by the locking pin 24 fitted therein. ) To fix each other.

The locking means has a spring 30 that elastically presses the pair of locking plates 20 in a direction to retract one another. The spring 30 is installed on the rotating shaft 22 of the locking plate 20, and both ends thereof are configured to be supported by the locking plate 20, respectively. The spring 30 is elastically pressurized in both directions to pinch the locking plate 20, so that the locking pin 24 of the locking plate 20 is connected to the through hole 26 of the second lever portion 14 and the connecting link. The locking hole 28 of 16 is always kept in a fitted state.

The locking means further includes a pressing part 32 extending from an upper end of the locking plate 20 so that the locking plate 20 can be pushed apart from both sides. The pressing portion 32 allows the driver to press the locking plates 20 on both sides to open them to both sides so that the locking pins 24 inserted into the through holes 26 and the locking holes 28 are locked to the through holes 26. ) And from the locking hole 28.

According to this locking means, as shown in FIG. 3, the locking pin 24 of the locking plate 20 causes the through hole 26 of the second lever portion 14 and the locking hole 28 of the connecting link 16. ) So that the second lever portion 14 and the connecting link 16 can be fixed to each other so that the second lever portion 14 disposed at the "parking position" B can be locked. do.

In addition, as shown in FIG. 5, the driver can press and press the pressing portion 32 of the locking plate 20 in the process of holding the second lever portion 14, so that the through hole of the second lever portion 14 can be pressed. The locking pin 24 fitted in the locking hole 28 of the linking linkages 16 and 26 can naturally escape from the through hole 26 and the locking hole 28, and thus the "parking position" (B). The second lever portion 14 locked at can be unlocked.

6 is a sectional view showing a modification of the locking means. Unlike the above-described embodiment, the locking means of the modification is provided with the locking plate 20 only on one side of the second lever portion 14, and the second lever only with the locking pin 24 of the locking plate 20 provided on one side. It has a configuration for fixing the portion 14 and the connecting link (16). Of course, the other configuration is the same as in the above-described embodiment.

The locking means of the modified example having such a configuration can lock the second lever portion 14 in the "parking position" B even with a small number of components, thereby lowering the installation cost.

As described above, the toggle parking brake lever according to the present invention is configured to lock the second lever portion disposed in the parking position, but to release the locking only by the driver's operation, thereby causing the second lever to be driven by any external force and impact. The braking can be prevented from being released by rotating from the additional parking position to the release position.

Although the exemplary embodiments of the present invention have been described above by way of example, the scope of the present invention is not limited only to the specific embodiments, and may be appropriately changed within the scope described in the claims.

Claims (3)

In the toggle parking brake lever connected by a brake and a cable for braking the drive shaft, The first lever part 10 fixedly installed on the vehicle body 1, the equalizer 12 supporting the cable 3 and installed linearly on the first lever part 10, and the first lever. The second lever part 14 and the second lever that rotate between the release position A that is folded at a predetermined angle with respect to the part 10 and the parking position B that extends to the first lever part 10 to form a straight line. A connecting link connecting the unit 14 and the equalizer 12 and pulling the equalizer 12 as the second lever unit 14 rotates from the release position A to the parking position B. 16); And locking means for locking the second lever portion 14 at the parking position B by fixing the second lever portion 14 and the connection link 16 at the parking position B, The locking means, A locking plate 20 rotatably installed on the second lever portion 14; A locking pin 24 protruding from the locking plate 20 toward the second lever portion 14; A through hole 26 and a locking hole 28 into which the locking pin 24 may be fitted; One end is installed on the rotating shaft 22 of the locking plate 20 so that the locking plate 20 is supported, and the locking pin 24 is fitted into the through hole 26 and the locking hole 28 to be coupled. A spring (30) for elastically pressing the locking plate (20) in a direction toward the through hole (26) and the locking hole (28); And Pressing portion 32 formed in the locking plate 20 to press the locking plate 20 in the direction to separate the locking pin 24 from the through hole 26 and the locking hole 28 Include, Toggle parking brake lever, characterized in that the through hole 26 is formed in the second lever portion 14, the locking hole 28 is formed in the connecting link (16). delete The method of claim 1, The locking means is a toggle parking brake lever, characterized in that formed in a pair on both sides of the second lever portion (14).

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