JPH0352798Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention relates to the pivots of the upper and left hand levers and the receiver in a pantograph type jack.

Conventionally, in this type of pantograph type jack, the tips of the upper left and right lifting rods are pivoted and connected by a support shaft in the same way as the lower left and right lifting rods, and the load receiver is also supported by the support shaft. It was hot.

Problems to be Solved by the Invention Pantograph type jacks are used as accessories for automobiles, so they are suitable for mass production and require low cost. Therefore, this idea is
In particular, the structure for connecting the ends of the upper and right hand levers and the structure for attaching the load receiving lever are designed to allow smooth load receiving operation and to significantly reduce costs.

Means for Solving the Problem Bearing grooves that open at the tip edges are provided at the tips of the upper left and right levers of a pantograph type jack whose base end is pivotally supported on a support shaft through which a threaded rod is passed. The pivot member that fits into both bearing grooves and connects and supports the bearing is made by cutting a rectangular plate of a required thickness from a steel plate, leaving the required width at both ends, and curving the inner edge into a tubular shape of the required diameter. The pivot part that fits into the groove is used as the receiving groove, and the remaining parts protruding in the shape of left and right wings are used as the receiving part. A pantograph type jack, characterized in that it is provided with relief parts into which the corresponding parts of both tip edges are fitted when descending, and further has cut and raised retaining claws that connect with the upper end sides of the upper and left levers. .

Function Since this device is constructed as described above, the tips of the upper and left levers are opened at their tip edges to form bearing grooves in advance by means of press molding, etc. After fitting, the retaining claws can be raised to allow for easy and secure pivoting. This pivot member can be used as it is as a consignment receipt. Further, by fitting the tips of the weighting rods into the escape portions provided in the pivot member, the top, bottom, left and right weighting rods can be extended to the highest position or contracted to the lowest position.

Embodiment Below, this invention will be explained with reference to drawings showing embodiments. 1 is a pantograph-type jack of this invention, and a base 2 has pivots at the tips of lower left and right levers 3 and 4 constituting the lower half. 5, whose upper bases are connected to a threaded bearing sleeve 6 and a shaft bearing sleeve 7.
When the handle 10 is connected to a connecting frame 9 fixed to the shaft end of the threaded rod 20 and rotated, the space between the threaded portion bearing sleeve 6 and the shaft portion bearing sleeve 7 can be expanded and contracted. The upper left and right weight rods 11 that constitute the upper half of the threaded bearing tube 6 and the shaft bearing tube 7,
The lower bases 12 are respectively pivoted, and the opposite ends are pivotally supported by a receiver 13 serving as a pivot and receiver.

The pivot member 13 is constructed by cutting and pressing a flat material made of soft rope of the required thickness, and the material is short in shape.
A cargo receiving groove 14 whose central part is curved into a tubular shape with a required width, whose outer circumferential surface is provided on the pivot portion 13a of the circumferential surface, and whose upper edge corresponding surfaces are opened at an appropriate interval in the longitudinal direction.
A receiving plate 13b is provided on the pivot portion 1, rising upward from its mouth edge and bent in a hook shape on both sides.
The bearing grooves 11a and 12a formed at the tips of the upper and left hand rods 11 and 12 are fitted into the upper and left side weight rods 11 and 12, and the relief holes 13c and 13c are fitted into the upper edges 11a ₁ and 12a ₁ of the bearing grooves 11a and 12a, respectively. Both the above-mentioned consignment receipts 13b
, open the required width around the bent corner, and attach the pivot portion 1.
At the bottom of the front and rear ends of 3a are locking claws 13d, 13d.
is cut and raised downward to prevent the tips of the upper and left levers 11 and 12 from coming off the pivot portion 13a.

The retaining claws 13d, 13d are similar to the retaining claws 13d ₁ , 13d ₁ shown in FIG.
12 may be arranged so as to be in contact with the inner surface of the tip.

Effects Since this device is constructed as described above, the tip of the upper hanging rod of the pantograph type jack is connected by a pivot member that serves as both a pivot and a load holder, and at the same time , a consignment receipt can be attached, and the attachment work only needs to be done once, contributing to a reduction in manufacturing costs.

In addition, the pivot member is formed in the shape of left and right wings, so that the receiving plate is integrally attached to it.
The opening in the center is formed as a load receiving groove, and the engagement with the loaded object is perfect, and there is no fear of the jack coming off.Also, the pivot member has a relief part, so it is easy to handle the load from the top and left. The width of the tip of the rod can be made as wide as possible, making the fitting with the pivot member smooth and robust. In addition, the bottom surface of the pivot member is cut downward and provided with a retaining claw, so once the pivot member is connected, it will never come off from the upper and left levers, ensuring its safety. This is to ensure the sex.

Therefore, the structure is simple, and it is possible to provide a lightweight, low-cost pantograph type jack mainly for automobiles.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; Fig. 1 is a front view of the jack of this invention, Fig. 2 is an enlarged front view of the main parts, Fig. 3 is a plan view of the same, and Fig. 4 is a front view of the jack of this invention. Figure 2 is a sectional view taken along the line A-A, Figure 5 is a perspective view of the pivot member alone, Figure 6 is a side view of the tip of the upper and left levers that engage and pivot the pivot member, and FIG. 7 is a plan view, and FIG. 8 is a partial sectional view showing a second embodiment of a retaining pawl provided on a pivot member. 1... Pantograph type jack, 11, 12...
...Upper left and right levers, 11a, 12a...Bearing groove, 1
1a1, 12a1... Upper edge, 13... Pivot member, 13a... Pivotal portion, 13b... Receipt, 1
3c... Escape hole, 13d... Anti-removal claw.

Claims (1)

[Scope of utility model registration request] Bearing grooves that open at the tip edges are provided at the tips of the upper left and right levers of a pantograph type jack whose base end is supported by a support shaft through which a threaded rod is passed, and the jack fits into both bearing grooves. , the pivot member for connecting and supporting the pivot member is made of a rectangular plate cut from a steel plate of a required thickness, leaving the required width at both ends, and curving the inner edge of the rectangular plate into a tubular shape of the required diameter to fit into the bearing groove. At the same time, the space between the approached inner edges is used as a receiving groove, and the remaining parts protruding in the shape of left and right wings are used as receiving parts. A pantograph type jack characterized by providing a relief part into which a corresponding part is fitted, and further having cut and raised retaining claws connected to the upper end side surfaces of the upper and left levers.