JPH0518391Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Industrial application field This invention is intended to be used when a vehicle is lifted up for vehicle maintenance work, etc., and if the vehicle cannot be stably supported due to the influence of unbalanced loads, the vehicle This invention relates to a vehicle maintenance lift that prevents vehicles from slipping and falling.

(b) Prior Art A lift for vehicle maintenance is equipped with a support body such as a swing arm or a lifting plate that supports the lower part of the vehicle body so as to be able to move up and down, and is designed to support the vehicle in a well-balanced manner. When the vehicle is restored, the vehicle body is supported while resting on the support.

Vehicle maintenance lifts are designed on the premise that the weight distribution of the vehicle is equal between the front and rear, and although slight adjustments are possible depending on the vehicle model, stable support is only possible when the front and rear weight ratio is at most 4:6. It is.

However, the weight distribution of FF cars (front engine, front drive cars) is 3 at the rear and 7 at the front, which is a huge difference, making the front-rear weight balance extremely poor. Therefore, if heavy objects such as the rear bumper or tires are removed during maintenance, the balance will be further disrupted and the vehicle will tend to tip forward, potentially causing the vehicle to slip or fall. If a vehicle falls during maintenance, it will not only cause damage to the vehicle, but there is a high risk of an accident that could endanger the lives of the workers at the point of fall.

Therefore, in the past, for example,
No. 142791, Utility Model Publication No. 59-50994, JP-A-51-64262
As described in the publications of the above issues, chains were used to connect parts that needed to be linked together in vehicle maintenance lifts.

C. Problems to be solved by the invention If conventional tying means are applied between the elevating body and the vehicle, it is possible to prevent the vehicle from falling, but the conventional structure simply provides a fastening device such as a chain. Since the length cannot be adjusted, it must be replaced if the car model changes.

D. Means for solving the problem The present invention is designed to prevent the vehicle from falling by anchoring the body of the lifted vehicle when it loses its front and rear weight balance and is about to fall or fall. , the length of the anchorage can be adjusted with a simple and effective structure to prevent at least personal accidents, and the chain guideway is equipped with an outlet on the elevating body that moves up and down integrally with the vehicle support member. Then, a link chain is accommodated in the chain guide path with the tip thereof protruding from the outlet, a locking member is attached to the tip of the link chain, and the surface of the outlet in the chain pull-out direction is closed. A drawer window is provided on a surface adjacent to the closed surface, and a slit communicating with the drawer window is cut into the closed surface.

E. Effect Before lifting up the vehicle, if the locking member attached to the tip of the link chain is hooked to the appropriate part of the lower part of the vehicle body and the link chain is locked in the slit, the center of gravity position will change. Even if the support becomes unstable, it will not slip or fall because it is securely connected by the link chain.

F. Embodiment An embodiment of the vehicle maintenance lift according to the present invention will be described based on the drawings.

Figure 1 shows the swing arm part of a two-post lift.The swing arm 1 has a support arm 1b slidably inserted into a rotation support member 1a to adjust the overall length of the arm. It is possible.
A receiver 2 is attached to the tip of the support arm 1b, and the receiver 2 supports the lower part of the vehicle body. The base end of the swing arm 1 is pivotally connected via a bracket 4 to a carriage 3 that moves up and down along the support P so that it can rotate horizontally.
These three components together form an elevating body that moves up and down. Guide tubes 5, which are chain guide paths, are arranged in parallel along the longitudinal direction on the side surface of the swing arm 1, and a spiral spring 6 is installed at the base end of the guide tube 5. Also, the outlet at the tip of the guide tube 6 is
The surface in the direction of pulling out the chain is closed by a lid 7 in which a slit 7a is cut upward from the lower end, and a drawer window 8 is further cut out in the lower surface. Reference numeral 9 denotes a hanging device in which a hook-shaped hook 9b serving as a locking member is attached to the tip of a link chain 9a, and the link chain 9a is inserted into the guide tube 5 with its base end. The end portion is connected to the free end of the spiral spring 6, and the tip is made to protrude from the outlet. As a result, the link chain 9a of the hanging tool 9 is pulled into the cylinder by the spiral spring 6, and the slit 7 at the outlet
By being locked to a, the drawer can be pulled out to a locked state at a desired length. That is, since each ring-shaped member of the link chain 9a is connected to each other at a phase of 90 degrees, the ring inserted into the outlet slit 7a and the adjacent ring are connected to each other through the slit 7a due to the 90 degree phase difference. It becomes impossible to escape. When pulling out or pulling back, use the drawer window 8 opened at the bottom of the guide tube 5.
Take it in and take it out.

To use a hanging device configured in this way,
Support the lower part of the car body by applying the support 2 to a predetermined part of the vehicle, adjust the length of the drawer 9, and attach the hook 9b at the end to the strength of the plate spring 10, rear axle, etc. is high and can be hung on a member connected to the vehicle body. In this way, the vehicle is connected to the swing arm 1 by the hanging device, and even if the front and rear weight distribution is biased to either side during maintenance work on FF or RR vehicles, the vehicle will be connected to the swing arm 1. It is safe without falling. Also, when not in use,
The link chain can be drawn into the guide cylinder and accommodated by the spiral spring.

In the above embodiment, the hanging fixture is attached to the swing arm of a two-post lift. However, when the lifting body is a lifting plate in a recessed lift, as shown in FIG. 2, a guide tube 5 and a spiral spring 6 can be incorporated on the back side of the lifting plate 11 so that only the hanging fixture 9 is exposed, resulting in a neat appearance.

Further, the type of lift may be of any structure, such as a two-post type, a buried type, a gate type, a hanging type, etc., as long as it supports the lower part of the vehicle body and lifts it up and down.

G. Effects According to this invention, in the case of a front-wheel drive vehicle with an extremely different weight balance, such as a front-to-rear ratio of 7:3, even if parts are removed from the rear and the balance becomes even worse, the anchorage will still hold the vehicle together. The link chain of the anchoring device can be adjusted in length with the slit provided at the outlet, so it will not loosen, and the structure is simple, inexpensive, and highly reliable. The benefits are enormous.

[Brief explanation of the drawing]

Figure 1 shows a vehicle maintenance lift according to the present invention.
Fig. 2 is a perspective view of a modified example in which the support body is an elevating plate in a built-in lift; Fig. 3a is a sectional view of the outlet; Fig. 3 Similarly, b is a perspective view of the outlet. DESCRIPTION OF SYMBOLS 1... Swing arm, 1a... Rotation support member, 1b... Support arm, 2... Receiver, 3... Carriage, 4... Bracket, 5... Guide cylinder, 6
... spiral spring, 7 ... lid body, 7a ... slit,
8... Drawer window, 9... Hanging tool, 9a... Link chain, 9b... Hook, 10... Leaf spring,
11... Elevating board.

Claims (1)

[Scope of utility model registration request] In a vehicle maintenance lift in which a vehicle support member supporting a lower part of a vehicle body is provided so as to be movable up and down, an elevating body that moves up and down integrally with the vehicle support member has a chain guide path provided with an outlet, and a chain guide path within the chain guide path. A link chain is housed with the tip thereof protruding from the outlet, a locking member is attached to the tip of the link chain, the surface of the outlet in the chain pull-out direction is closed, and the surface adjacent to the closed surface is A lift for vehicle maintenance in which a drawer window is provided on a surface and a slit is cut in the closed surface to communicate with the drawer window.