KR920001836Y1 - Arm fixing equipment for vehicle maintenance lift - Google Patents

Abstract

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Description

Arm fixing device of car maintenance lift

1 is a plan view of a vehicle maintenance lift having a lock mechanism according to the present invention.

2 is an explanatory view of the lock state of a swing arm in the same vehicle maintenance lift.

3 is an explanatory view of the unlocked state of the swing arm in the vehicle maintenance lift.

4 is an explanatory diagram of a conventional lock apparatus.

* Explanation of symbols for main parts of the drawings

1: holding 2: carriage

3: swing arm 4: vertical axis

5: bracket 6: gear

7: push rod 8: toggle link mechanism

8a: toggle joint 9: up-down control lever

10: stopping member 11: adjusting bolt

12: adjusting nut 13: post base

14: Fixture 15: Lock release subtitle

The present invention relates to an arm fixing device for a car maintenance lift having a swing arm capable of horizontal rotation about a vertical axis on a carriage moving up and down, and the lock mechanism of the arm is lowered by a simple and reasonable configuration. Is configured to be automatically enabled.

Conventionally, the fixing mechanism of the arm is connected between the arm side portion and the carriage by a fastener 14 which can be fixed to the side of the swing arm 3 in a stretchable and suitable length as shown in FIG. When releasing the lock to adjust the rotation 3), it is known that the lock release member 15 is operated to be rotated, and after adjustment, the lock release member 15 is operated to be locked.

Since the above-mentioned conventional fixing mechanism is provided so as to span the swing arm and the carriage, the design is different depending on the shape of the arm and the difference between the left and right sides, and it must be designed specifically according to the type of the lift.

Moreover, since it is provided on the side of the arm which rotates and arrange | positions under the vehicle, it becomes a obstacle of work, and depending on a model, it becomes impossible to adjust an appropriate arm position by touching a vehicle body. Further, manual fixing and releasing operations are cumbersome, and if the forgetting of the fixing operation is forgotten, the vehicle may fall.

This design is compatible even if the swing arm is replaced without installing it on the arm so that it does not interfere with the work. When the carriage requiring the angle adjustment of one arm reaches the lowest position, the lock is automatically released. It is a safety device that automatically returns to the state, and its configuration is provided with the engaging portion according to the circular arc trace around the vertical axis at the base of the swing arm, and the force applied downward is applied to the suitable part of the carriage, and the carriage is located at the lowest position. In the state of installing the pushing rod for pushing operation, and at the top of the pushing rod, install the link mechanism reciprocating in connection with the shanghai-dong of the rod in the direction of the interlocking portion, and the above fitting at the tip of the link mechanism A fastening member for contacting and separating parts is installed.

Upon reaching the lowest position of the swing arm, the pushing rod is pushed up and the link mechanism is actuated to thereby release the locking member from the engaging portion and unlock the arm.

When the carriage is raised, the pushing rod is lowered so that the link mechanism moves in the reverse direction, and the stopping member abuts on the engaging portion and becomes a lock.

1 to 3 show an embodiment of the safety device according to the present invention, 1 is a support, 2 is a carriage to move up and down according to the support (1), 3 is a swing arm.

The swing arms 3 are pivotally pivoted on the vertical shafts 4 provided at both ends of the carriage 2 via the brackets 5, and the vertical axis 4 is centered on the upper surface of the base end of the swing arm 3, respectively. An arc-shaped tooth 6, which is a stop along the arc trajectory, is fixed. A pushing rod 7 applied downward by a coil spring 7a is vertically inserted into the carriage 2, and a toggle link mechanism 8 is provided on both sides of the pushing rod 7 on the upper side of the pushing rod 7a. It is engaged in the direction of (6), and the up / down operation lever 9 is fixed to one toggle joint part 8a.

Each end of the toggle link mechanism 8 is provided with a stop member 10 having a tooth-like engagement portion corresponding to the tooth surface of the tooth 6 in engagement with the tooth 6 at the time of lifting up. .

11 is an adjustment bolt 12 is an adjustment nut.

When the carriage 2 descends to reach the lowest position, the tip of the lifting rod (the head of the adjusting bolt 11) abuts against and pushes up the upper surface of the post base 13, which is the base of the support 1, thereby pushing it up. Both ends of the toggle link mechanism 8 are pulled inward to release the engagement between the engaged tooth 6 and the stopper member 10 so that the swing arm 3 is rotatable.

When the swing arm 3 is set at the lower part of the chassis by adjusting the angle and lifted up, the lifting rod 7 is lowered by the force applied downward of the coil spring 7a, and the toggle link mechanism 8 The both ends of the end are extruded to the outside, and the gear 6 and the stopper member 10 are engaged with each other to be engaged, and the swing arm 3 is locked again.

If it lifts up at this time even if it lifts up a little, it will be in the locked state, but it can also be set by manual operation by operation of the up-down operation lever 9. When the hand is released from the up / down operating lever 9, the toggle link mechanism 8 returns to the locked state by the force of the coil spring 7a.

In addition, in this embodiment, although the lock of the engagement part and the engagement member 10 is performed by engagement of a tooth, it can also be set as the structure which uses the friction force of a friction difference and a press member.

In the safety device of the present invention, the locking mechanism of the swing arm is automatically released when the lift and the down are turned, and when the lift / up is lifted, it is locked and the safety of the supporting vehicle is promised.

Therefore, if the work efficiency is improved compared to the manual operation and the lock release is required during lift-up, the manual release mechanism may be installed. In that case, the lock releases when the hand is released from the manual release mechanism. There is no worry about accidents caused by forgetting.

Claims (2)

In an automobile maintenance lift having a swing arm 3 capable of horizontally pivoting around a vertical axis 4 on a carriage 2 that moves up and down, the vertical axis 4 is centered on a proximal end of the swing arm 3. The engaging portion is provided in accordance with the circular arc trajectory, and the force applied downward is applied to an appropriate portion of the carriage 2, and the pushing rod 7 for pushing the carriage 2 in the lowermost position is operated. And a link mechanism (8) reciprocating in connection with the shanghai-dong of the rod in the direction of the engagement portion at the upper end of the pushing rod (7), and the engagement at the tip of the link mechanism (8). An arm fixing device for an automobile maintenance lift, characterized in that a fastening member (10) is provided which can be brought into contact with and separated from a part. 2. The arm fixing device for an automobile maintenance lift according to claim 1, wherein the engaging portion is formed in the shape of an engagement tooth of the tooth (6).