JPH0810588Y2 - Lifting leg device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Industrial field of application The present invention relates to a leg device for stably supporting an elevating body for accommodating tools, instruments and the like used in a repair shop for vehicles such as automobiles.

(2) Conventional Technology As a conventional device for raising and lowering a lifting body, there is a device in which the lifting body is connected to the lower end of a chain wound around a sprocket that rotates in conjunction with a drive source such as a motor. There was nothing suitable to support the surface stably.

(3) Problems to be Solved by the Invention As described above, since the lifting body is not stably supported on the floor surface, the lifting body sways due to the action of an external force, which makes it inconvenient to take in and out the tool, and the chain There is a problem that the lifting body may fall due to breakage, which is dangerous.

Therefore, the present invention provides a leg device for an elevating body, in which the leg is projected when the elevating body descends, the elevating body is supported safely, and tools and instruments are easily put in and taken out for easy handling. To aim.

(4) Means for Solving the Problems In order to achieve the above-mentioned object, the present invention is an elevating and lowering body in which a chain and a strip-shaped leaf spring are superposed and wound up and down by forward and reverse rotation of a drive source provided above In the above, the chain is arranged so as to be wound around the outside of the leaf spring, and legs that fold and rotate at both ends of the lower surface of the elevating body are axially attached at the roots, and the roots of these legs are substantially It is characterized in that an L-shaped connecting rod is provided so as to project inward, and a lower end portion of the chain is connected to a tip end portion of the connecting rod.

(5) Action When the elevating body is lowered, the chain connected to the elevating body and the strip-shaped leaf spring extend. When the desired height is reached, the strip-shaped leaf spring stops expanding, and since the chain is wound on the outer side of the leaf spring, slack occurs between the chain and the leaf spring, which causes the lifting body to move. The leg body folded to the lower surface projects upright from the elevating body by its own weight and stands upright.

Next, when the lifting body is stored, the chain and the strip-shaped leaf spring are wound up so that the leg force is folded inward through the connecting rod by the indexing force of the chain, and the lifting body is lifted. It is stored in the bottom of the body and the lifting body also rises.

(6) Embodiment One embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

(1) shows a storage box, and the storage box (1)
The lower surface is open and the upper surface is fixed to the ceiling of the maintenance area. (2) shows a lift box which is a lifting body that stores vehicle maintenance equipment, and the lifting body (2) has opening and closing doors on both sides, and the columns (3) and (3) are expanded and contracted in several stages. ) Is fixed to the lower part. Also these columns (3), (3)
Is fixed in the storage box (1), and the columns (3) and (3) are formed to have a smaller diameter toward the upper stage. Further, a chain (4) and a strip-shaped plate spring (5) are inserted into the columns (3) and (3), and the drive is composed of a reduction motor with a braking device mounted and fixed in the storage box (1). One end of each of the chain (4) and the leaf spring (5) is locked to a drum (not shown) driven by a source, and the chain (4) and the leaf spring (5) are rotated by forward and reverse rotation of the drum. ) Are piled up and wound, and the elevating body (2) is moved up and down. The other end of the leaf spring (5) is locked to the floor surface of the lifting body (2). (7),
(7) is a T-shaped leg provided on the lower surface of both sides of the lifting body (2), and bearing plates (7a), (7a) covered with hard rubber or the like are fixed to the lower end of the leg. At the same time, inclined portions (7b), (7b) having an inclined surface outward are formed at the upper end, and a plate-like support projecting from the lower surface of the lifting body (2) at the inclined portion (7b). The support shaft (7
The leg body (7) is pivotally attached by c).
Further, an L-shaped connecting rod (8) having a key-shaped convex portion (8a) at the end thereof is projected on the rear surface of the inclined portion (7b) of the leg body (7), and the convex portion is formed. The end of the chain (4) is connected to (8a). (9) shows a spiral spring, one end of which is locked to the tip of the inclined portion (7b) and the other end of which is projected from the lower surface of the lifting body (2). The leg (7) is fixed to the end of the stop plate (10).
It is formed so that it contracts when it is expanded and it expands when it is stored. Reference numeral (11) is a rectangular leg locking plate that projects downward from the lower surface of the lifting body (2) and is formed parallel to the folding direction of the leg (7), and the lower side of the locking plate (11). (11
When a) is folded and the left side (11b) is expanded, the leg (7) is locked by contacting the root of the leg (7).

 Next, the operation of the above embodiment will be described.

When a reduction motor with a braking device, which is a drive source, is started, the inner leaf spring (5) and the outer chain (4) are attached to the drum.
The chain (4) and the leaf spring (5) in which the and are overlapped and wound are unwound and extended, and the elevating body (2) starts descending. Then, when the rewinding is temporarily stopped when the lifting body (2) approaches the floor surface, the chain (4) is wound on the outside of the leaf spring (5) by the drum. 4) becomes longer than the length of the leaf spring (5), and the leg body (7) opens in the direction of the arrow (A) with the spindle (7c) as a fulcrum by its own weight. Then, the root of the leg (7) abuts on the left side (11b) of the locking plate (11) and stands upright.
Thus, by further rewinding the chain (4) and the leaf spring (5), the lifting body (2) is stably fixed on the floor surface by the leg body (7).

Further, when the lifting body (2) is stored, when the chain (4) and the leaf spring (5) are wound in the direction of the arrow (B), the lifting body (2) rises and the chain (4) Pulls the tether rod (8), and further, the spring (9) presses the tip of the inclined portion (7b) of the leg (7) in the direction (C), whereby the leg (7) Rotates about the support shaft (7c) as a fulcrum and is folded inward so that the locking plate (11)
It comes into contact with the lower side (11a) and is smoothly stored in the bottom of the lifting body (2). Then, when the ascent is further continued, the elevating body (2) is stored in the storage box (1).

The spring (9) has a support shaft (7c) on the outside of the spiral spring.
A spiral spring may be intervened in the end to lock one end to the inclined part (7b) and the other end to the stop plate (10). Further, a lighting device or the like is formed on the lower surface of the elevating body (2) to perform nighttime work. You can also enable it.

(7) Advantageous Effect of the Invention As described above, the present invention is an ascending / descending body that winds up and down by winding a chain and a strip-shaped leaf spring by forward / reverse rotation of a drive source. Since the leg body is pivotally attached, and the connecting rod is projected inside the root portion of the leg body to connect the lower end portion of the chain, the leg body automatically moves when the elevating body descends. Standing upright, the lifting body can be safely supported, tools and instruments can be easily taken in and out, and the lifting body does not fall due to breakage of the chain or falling of the strip-shaped leaf spring, etc., and safety is improved, Furthermore, the legs can be stored easily, and the appearance is not impaired.

[Brief description of drawings]

FIG. 1 is an overall front view showing one embodiment of the present invention, and FIG. 2 is a partial sectional view of an essential part. (2) ...... Lifting body (4) ...... Chain (5) ...... Leaf spring (7) ...... Leg body (8) ...... Connecting rod

Claims (1)

[Scope of utility model registration request] 1. In an elevating and lowering body in which a chain and a strip-shaped leaf spring are overlapped and wound up and down by a forward and reverse rotation of a drive source provided above, the chain is wound outside the leaf spring. The legs are arranged and pivoted at both ends of the lower surface of the elevating body so as to be pivotally attached at the roots, and substantially L-shaped connecting rods are provided at the roots of the legs to project inward. A leg device for an elevating body, wherein a lower end portion of the chain is connected to a tip end portion of a rope.