JPS6119198Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a threaded rod engaging body for a pantograph type jack, that is, a nut body that engages with the threaded portion of the threaded rod, or a metal body that engages with the shaft portion of the threaded rod. nut body or metal body,
Furthermore, the main objective is to reduce the manufacturing cost of the pantograph type jack.

Explaining with reference to the drawings showing an embodiment in the case of a nut body, the threaded rod engaging body according to the present invention is first inserted between the ends of a pair of side plate pieces 11 and 13 of the link structure spaced apart. A base frame 21 is provided. This base frame 21 includes each link component side plate piece 1.
1; A pair of side plates 23 that are in close contact with the inner surface of the end portion of 13.
a, 23b, and a U-shaped member including a web 25 extending between one end of a pair of side plates 23a, 23b, with a horizontal hole 27a; 27b in the center of each side plate 23a; 23b.
a plurality of locking notches 29a, 31a at the other end;
29b and 31b, and a shaft hole 33 in the center of the web 25, into which the threaded rod 15 extends concentrically in a loosely fitted state.

Next, this threaded rod engaging member includes a threaded rod engaging member 41 (a nut shown or a metal not shown) disposed concentrically between the pair of side plates 23a and 23b of the base frame 21. This threaded rod engaging member 41
has a threaded rod engaging shaft hole 43 (the screw hole shown or a bearing hole not shown) through which the threaded rod 15 extends, and a shaft hole of the web 25 at the end of the base frame 21 opposite to the web 25. 33, and has a second reduced diameter shaft part 45b at the other end, and further between the first and second reduced diameter shaft parts 45a and 45b. The body of the base frame 21 is provided with side end surfaces 47a and 47b that face the inner surfaces of the side plates 23a and 23b of the base frame 21 at intervals.

Furthermore, this threaded rod engaging body is connected to the side plate 2 of the base frame 21.
It includes a stop plate 51 disposed at the other ends of 3a and 23b. This stop plate 51 has a shaft hole 53 that closely fits into the second diameter-reduced shaft portion 45b of the threaded rod engaging member 41, and locking notches 29a, 31a; 29b, 31b, and a pair of link-constituting side plate pieces 11,
A plurality of locking protrusions 55a, 5 that come in close contact with the inner surface of 13
7a; 55b, 57b, and is configured to clamp the body of the threaded rod engaging member 41 between the web 25 of the base frame 21.

Finally, this threaded rod engagement body includes a pair of pivot pins 61 disposed on each side plate 23a; 23b of the base frame 21;
It is equipped with 63. These pivot pins 61; 63
are the horizontal holes 27 of each side plate 23a of the base frame 21;
a; a shaft portion 65a that closely fits and extends into 27b;
65b, each side plate 23a; each side end surface 47a facing the inner surface of 23b and the threaded rod engaging member 41;
The flange portion 67 is inserted between the flange portion 47b and the
a; has 67b.

The threaded rod engaging body according to this invention is composed of the base frame 21, the threaded rod engaging member 41, the stop plate 51, and a pair of pivot pins 61, 63 as described above. After inserting the base frame 21 into a predetermined position between the ends of the pair of link-constituting side plate pieces 11 and 13, the pair of pivot pins 61 and 63 are inserted into each side plate of the base frame 21 so that each flange portion 67a and 67b 23
The threaded rod engaging member 41 is inserted into each horizontal hole 27a, 27b from between the pair of side plates 23a, 23b so as to abut on the inner surface of the side plates 23a, 23b, and then the threaded rod engaging member 41 is inserted so that the first diameter-reduced shaft portion 45a is in contact with the base frame. A flange portion 67a; 67 of a pivot pin 61; 63 that fits into the shaft hole 33 of the web 25 of 21 and has side end surfaces 47a, 47b facing each other.
side plates 23a, 2 of the base frame 21 so as to be in contact with b.
3b, and finally attach the stop plate 51 to the locking protrusion 5.
5a, 57a; 55b, 57b are locking notches 29
a, 31a; fits into 29b, 31b and comes into close contact with the inner surfaces of the link-constituting side plate pieces 11, 13, and so that the shaft hole 53 fits into the second reduced diameter shaft portion 45b of the threaded rod engaging member 41. , the side plate 23 of the base frame 21
It can be assembled by a simple fitting operation of inserting it into the other ends of a and 23b, and the manufacturing cost is low.

Further, due to its structure, this threaded rod engaging body has a first diameter-reduced shaft portion 45a and/or a second diameter-reduced shaft portion 4.
Prepare several types of threaded rod engaging members 41 with different overall axial lengths by changing the length of 5b,
From these, it is possible to immediately manufacture a pantograph type jack that corresponds to the desired lifting load by selecting and using one that has an axial length that is suitable for the strength that corresponds to the lifting load of the pantograph type jack to be manufactured. It is practical and economical.

[Brief explanation of the drawing]

The drawings show an embodiment of the nut body constituting the threaded rod engaging body according to this invention, in which Fig. 1 is a front view, Fig. 2 is a partially cutaway side view, and Fig. 3 is a partially cutaway side view. FIG. 11, 13... Link configuration side plate piece, 15... Threaded rod, 21... Base frame, 23a, 23b... Side plate,
25...Web, 27a, 27b...Horizontal hole, 29
a, 29b, 31a, 31b...locking notch, 3
3... Shaft hole, 41... Threaded rod engaging member, 43...
Threaded rod engagement shaft hole, 45a...first reduced diameter shaft portion, 4
5b... Second reduced diameter shaft portion, 47a, 47b... Side end surface, 51... Stopping plate, 53... Shaft hole, 55a,
55b, 57a, 57b...Locking protrusion, 61, 6
3... Pivot pin, 65a, 65b... Shaft, 67
a, 67b...flange part.

Claims (1)

[Scope of utility model registration request] A pair of side plates that are spaced apart from each other are provided with a pair of side plates that are in close contact with the inner surfaces of the ends of the side plate pieces, and a web that extends between one end of the pair of side plates, with a horizontal hole in the center of each side plate and a plurality of engagement holes in the other end. A base frame having a locking notch and a shaft hole through which a threaded rod extends loosely into the web; and a threaded rod holder arranged concentrically between a pair of side plates of the base frame through which the threaded rod extends. It has a mating shaft hole, and has a first reduced diameter shaft portion that closely fits into the shaft hole of the web at the end of the base frame opposite to the web, and a second reduced diameter shaft portion at the other end. , and a threaded rod engaging member having a side end surface facing the inner surface of each side plate of the base frame at a distance in the body between the first and second diameter-reduced shaft parts; the other end of the side plate of the base frame. The shaft hole has a shaft hole disposed in the portion so as to pinch the body of the threaded rod engaging member between the web and closely fits into the second reduced diameter shaft portion of the threaded rod engaging member; a retaining plate having a plurality of retaining protrusions that closely fit into retaining notches of the side plates of the base frame and closely contact the inner surfaces of the pair of link-constituting side plate pieces;
A shaft portion arranged on each side plate of the base frame that closely fits into the horizontal hole and extends, and a shaft portion that is inserted and inserted in a pinched state between the inner surface of each side plate and each opposing side end surface of the threaded rod engaging member. A threaded rod engagement body for a pantograph jack consisting of a pair of pivot pins having a flange portion.