JPS6032076Y2 - Jyatsuki - Google Patents

Description

[Detailed description of the invention] This invention relates to the improvement of a manual jack, and its purpose is to reduce the size and make it convenient for storage, unlike conventional screw jacks or pandagraph jacks. Moreover, it is an object of the present invention to provide a jack that is lightweight, easy to handle, and robust.

To explain the present invention with reference to the embodiment shown in the drawings, 1 is a lower pressure main rod formed of channel steel of a required height, and the base is a base 2.
3 is attached to the shaft.

Reference numeral 4 denotes a joint frame formed by extending both upper end walls of the lower pressure main rod vertically downward by a required length; 5 is an upper pressure main rod;
It is made of channel steel of a required length and has an inner width that can be fitted inside, and is bent upward from a predetermined point at an obtuse angle so that the base end is shaped into the bent member part 5a, and a receiving plate is attached at the tip. 6 is attached to the shaft.

The material portion 5a of the upper pressure main rod 5 and the joint frame 4 of the lower pressure main rod 1 are connected by a pin 7.

Reference numeral 8 designates a bearing which is pivoted on both sides by a support shaft 3 inside the bent elbow end of the upper pressure main rod 5, and a neck 10 of a threaded rod 9 is pivoted on this. It is screwed into a female screw hole provided in a bearing 12 which is rotatably supported inside the end of the joint frame 4 of the lower pressure main rod.

11 is a bundle joint fixed to the upper end of the threaded rod 9; 14;
15 is a bearing, and 15 is a thrust receiver.

Since the present invention is constructed as described above, when not in use, the upper pressure main rod 5 and the lower pressure main rod 1 can be folded as shown in Figure 1, reducing the overall volume. , or when using it, for example when lifting the car body as shown in Figure 3, place the base 2 on the ground, apply the receiver 6 to the required place on the underside of the car body, and then attach the bundle joint. When a bundle is connected to 11 and the threaded rod 9 is rotated, the upper and lower piezoelectric rods 5.1 will stand up as shown in FIG. The body of the vehicle gradually rises.

When lowering a vehicle body that has been lifted, the upper and lower piezoelectric rods can be smoothly returned to the state shown in FIG. 1 by reversing the bundle.

As mentioned above, the overall size of this project is small, so when it is folded up, the volume is reduced and it does not take up much space for storage, making it convenient for use in the narrow trunk of a car, and since there are few components. It is possible to reduce production costs, reduce weight, and be easy to handle.In addition, due to the structure, the bent member part is formed by bending the base end of the upper pressure main rod upward, and the upper end of the lower pressure main rod is bent upward. The joint frame is extended downward, and the threaded rod is passed between bearings that are pivoted inwardly at both ends. does not stand up at a steep angle, but slopes quickly, engages the bundle effortlessly, and is in a position that is easy to be driven by.Moreover, as the pressure rod rises, its angle shifts to horizontal, making it even easier to operate. This has the effect of making it easier to do the molding work, and making the molding work smoother.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Figure 1 is a cross-sectional view in a folded state, Figure 2 is a side view in an erected state,
FIG. 3 is an illustrative diagram of the state of use. 1... Lower pressure main rod, 2... Base, 4...
...Joint frame, 5...Upper pressure main rod, 5a...
...Bending material part, 6...Consignment, Death...
Bearing, 9... Threaded rod, 9a... Threaded portion, 10... Neck, 11... Bundle joint, 12... Bearing.

Claims (1)

[Scope of utility model registration request] A lower pressure main rod in which a base is pivoted to the base end of a channel steel of a required length, and both walls of the upper end are extended downward to form a joint frame;
Similarly, it consists of an upper pressure main rod with a receiving plate pivoted on the tip of a channel steel of the required length, and the base end bent and extended upward to form a bent member part, and a lower pressure main rod. The upper end is fitted inside the bending part of the upper pressure main rod, and is connected by a support shaft so that it can be bent freely around the support shaft. A threaded rod with a bundle joint at the upper end is connected to the neck portion and the threaded rod, respectively, to the female threaded hole of the bearing that is pivotally supported toward the side and the female threaded hole of the bearing that is pivotally supported inward at the end of the joint frame of the lower pressure main rod. A jack that expands and contracts between the bending part and the joint frame by screwing the bearings together and rotating the threaded rod, resulting in piezoelectric operation.