JPS6317735Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a screw jack used when fixing a vehicle body immovably.

Damages such as dents on the car body caused by an accident can be repaired by fixing the car body immovably and pulling the dent outward. However, conventional techniques for fixing the car body are known in the art for such repair work. The vehicle body was once lifted using a jack, a fixed support was interposed under the vehicle body, and the jack was returned to support the vehicle on the fixed support. For this reason, it was very time-consuming and made the work complicated.

The car body fixing screw of the present invention was developed to simplify the above-mentioned car body fixing work, and its feature is that a cylinder is vertically established on a flat seat plate, and the inside of the cylinder is A screw shaft is screwed into the screw shaft so as to be able to rise and fall freely, a receiving metal fitting is suspended along one side of the cylinder from an upwardly protruding part of the screw shaft, an annular receiving piece is fixed to the lower end of the receiving metal fitting, and the receiving metal fitting is is fixed to a sliding ring loosely fitted around the outer periphery of the cylinder.

An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, a cylinder 2 is vertically established on the upper surface of a flat seat plate 1 by welding. A female screw member 3 is fixed to the inner wall of the cylinder, and a screw shaft 4 is provided in the cylinder so as to be movable up and down by being screwed into the female screw member 3. Reference numeral 5 denotes a receiving metal plate folded into a square shape, and a flange 6 welding the upper horizontal plate portion 5a of the receiving metal plate to the upper protrusion of the screw shaft 4.
While being loosely inserted above, the vertical plate portion 5b is made to hang down along one side of the cylinder 2, and the annular receiving piece 7 is fixed to the lower end horizontal plate portion 5c by welding. Reference numeral 8 denotes a sliding ring that is loosely fitted around the outer periphery of the cylinder 2, and the receiving metal fitting 5 is attached to the sliding ring 8.
The vertical plate portion 5b is fixed by welding. Screw shaft 4
A cap-shaped body 9 is loosely placed on the upper end of the cap-shaped body 9, and another annular receiving piece 10 is fixed to the cap-shaped body 9 by welding. A small screw 11 projecting inward from one side wall of the cap-shaped body 9 is loosely fitted into a small diameter portion 12 formed in the screw shaft 4 to prevent the cap-shaped body 9 from coming off. Reference numeral 13 indicates an operating rod that can be loosely inserted into a through hole 14 opened in the diametrical direction of the screw shaft 4.

3 and 4 show how the screw jack is used. That is, two of these screws are arranged along both side edges of the vehicle body, and both ends of the pipes 15, 15 provided in the vehicle width direction are inserted into the annular receiving piece 7, respectively. Reference numeral 16 denotes a vehicle supporting metal fitting fixed to the pipe 15. A plate-like member 18 in a direction perpendicular to the annular member 17 through which the pipe 15 is inserted is fixed by welding, and the plate-like member 18 has a pair of clamps. The mounting pieces 19, 19 are provided near both ends so that they can be tightened with the tightening bolts 20, 20, and a bracket 21 is provided in the middle part.
is fixed with a fixing bolt 22, and the bracket 21
Through holes 23 and 24 are opened in the holes 23 and 24. Reference numeral 25 indicates a stop bolt screwed into the annular body 17 to tighten the pipe 15. Both ends of pipes 26, 26 arranged along both side edges of the vehicle body are fitted into the through hole 24, and these four pipes 15, 15, 26, 2 are inserted.
6, the planar rectangular frame is assembled. A chain 27 is inserted through the through hole 23, and both ends of the chain 27 have anchor bolts 27 so that they can be engaged with clasps 29 fixed to the ground.

Therefore, by rotating the operating rod 13, the support fitting 5 is raised, the pipe 15 is lifted, and the support fitting 16 is lifted up.
The entire pipe frame is raised by raising the pipe frame, and the clamping pieces 19 of each support fitting 16 are brought into contact with predetermined locations on the lower surface of both side edges of the vehicle body to clamp a part of the vehicle body, whereby the vehicle body is lifted. Can be fixed. By tensioning the chain 27, it is possible to prevent the jacks from slipping sideways, so that the vehicle body is firmly fixed in that state and can be fixed without being moved even if an external force is applied during repair. Note that the annular receiving piece 10 at the upper end of the screw shaft 4 is located at a high position, so in order to pass the pipe 15 through it, it is necessary to lift the car body using another jack, but if it is necessary to lift the car body even higher, this annular receiving piece Use piece 10.

As explained above, in the car body fixing screw of the present invention, the annular receiving piece is fixed to the receiving metal fitting hanging down along one side of the cylinder, so that the pipe can be received at a low position. Therefore, the pipe suspended under the vehicle body can be directly supported, and the vehicle body can be fixed by simply lifting the screw shaft using the operating lever, resulting in significant labor savings. Furthermore, since the receiving fitting is fixed to the sliding ring, there is an advantage that even if a large load is applied to the annular receiving piece, the sliding ring is supported by the cylinder and can move up and down smoothly.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a screw jack showing an embodiment of the present invention, Fig. 2 is a longitudinal sectional view thereof, Fig. 3 is a perspective view showing the state of use, and Fig. 4 is a partially enlarged perspective view thereof. . 1...Seat plate, 2...Cylinder, 3...Female screw member,
4...Screw shaft, 5...Bracket fitting, 7...Annular receiver piece,
8...Sliding ring.

Claims (1)

[Scope of utility model registration request] A cylinder is vertically established on a flat seat plate, a screw shaft is screwed into the cylinder so as to be able to rise and fall freely, and a receiving metal fitting is suspended along one side of the cylinder from the upper protrusion of the screw shaft. A screw for fixing a vehicle body, characterized in that an annular receiving piece is fixed to the lower end of the metal fitting, and the receiving metal fitting is fixed to a sliding ring loosely fitted to the outer periphery of the cylinder.