JPH0522480U - Jackie's Nut Block - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to easily raise and lower the pantograph type jack. [Structure] The nut piece (5) of the nut block (5) is divided into two parts at the position of the screw hole (52E), and the divided parts (52A, 52B) are opened to open the screw hole (52E), and jack. Radle of (1) (6)
The jack (1) can be moved up and down directly by hand by freely sliding.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a nut block applied to a pantograph type jack used for lifting an automobile, for example.

[0002]

[Prior Art]

 As shown in FIG. 6, a conventional pantograph-type jack (11) has a base (12), a link (13) installed on the base (12), and a receiver provided on an upper end of the link (13). It comprises a stopper (14) and a screw rod (16) rotatably fixed to one end of the link (13) and screwed into a nut block (15) at the other end of the link (13). A lever is attached to a lever attachment portion (16A) at the tip of the jack, and the screw (16) is rotated forward and backward through the lever to move the jack (11) up and down.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional configuration, it takes time and effort to rotate the screw rod (16) many times to move the jack (11) up and down.

[0004]

[Means for Solving the Problems]

 As a means for solving the above conventional problems, the present invention has a screw hole (52E) into which a screw rod (6) of a pantograph-type jack (1) is inserted, and the screw hole (52E) is divided into two parts. It consists of a screw piece (52) being held and a frame (51) into which the screw piece (52) is loaded, and the divided parts (52A, 52B) of the screw piece (52) are the frame (51). Inside the jack block (5), the nut block (5) is slidable in the direction of mutual separation and the sliding parts (52A, 52B) are provided with sliding means (53A, 53B). ) Is provided.

[0005]

[Action]

 According to the nut block (5) of the present invention, the divided parts (52A, 52B) of the screw piece (52) are slid in the opening direction by the sliding means (53A, 53B) to separate the divided parts (52A, 52B). ) Is opened, the screw hole (52E) of the screw piece (52) is opened so that the screw rod (6) screwed into the screw hole (52E) can freely slide. Become. Therefore, the jack (1) is directly moved up and down to a predetermined height by hand, and the split means (52A, 52B) of the screw piece (52) is closed by the sliding means (53A, 53B) at that height. In this state, the screw rod (6) is normally and reversely rotated to move the jack (1) up and down.

[0006]

【Example】

 1 to 4, the pantograph type jack (1) includes a base (2), a link (3) installed on the base (2), and The receiving part (4) provided on the upper end of the link (3), the nut block (5) fixed to the other end of the link (3), and the one end of the link (3) rotatably fixed. And a screw rod (6) screwed into the nut block (5) at the other end.

The nut block (5) is a sliding block (53A, 53A, 53F), a crosspiece (51), a screw piece (52) loaded in the crosspiece (51), and a wedge surface (53E, 53F). 53B), a screw hole (52E) into which the screw rod (6) is screwed is provided in the center of the screw piece (52), and the upper half portion (52A) is located at the position of the screw hole (52E). ) And a lower half portion (52B), and the upper half portion (52A) and the lower half portion (52B) are vertically slidably housed in a vertical hole (51A) in the frame (51). As shown in FIG. 3, the key parts (52C, 52D) extended from the upper half part (52A) and the lower half part (52B) are respectively the wedge surfaces (53E, 53F) of the sliding blocks (53A, 53B). ) Is fitted in the keyway (53C, 53D). The sliding blocks (53A, 53B) are slidably housed in the lateral holes (51B, 51C) of the frame (51) respectively, and the rods (54A, 54B) of the sliding blocks (53A, 53B) The root ends of the levers (55A, 55B) are pivotally attached to the outside of the frame (51), and the middles of the levers (55A, 55B) are supported by bearings (56A, 56B). Further, the sliding blocks (53A, 53B) are urged by the springs (57A, 57B) in the directions indicated by arrows a and b in FIG.

In the above structure, when the levers (55A, 55B) of the nut block (5) are pushed in the directions of arrows C and D in FIG. 2, the sliding blocks (53A, 53B) move the rods (54A, 54B). Slide in the opposite direction through the arrows a and b, and the key groove (53C, 53D) along the wedge surface (53E, 53F) of the sliding block (53A, 53B) causes The half portion (52A) and the lower half portion (52B) slide in the directions of arrows E and F in FIG. 2 through the key portions (52C and 52D), and are separated from each other as shown in FIG.

In this state, the screw hole (52E) of the screw piece (52) is opened, and the screw rod (6) can freely slide in the opposite direction of the arrow in FIG. The jack (1) can be manually lifted or pushed down to the required height without rotation. When jacking up an automobile, etc., the lever (55A, 55B) of the nut block (5) can be released freely by abutting the receiving portion (4) of the jack (1) with the mounting portion of the vehicle body. The sliding block (53A, 53B) slides in the directions of arrows I and B due to the urging force of the springs (57A, 57B), and the upper half (52A) and the lower half (52B) of the screw piece (52) are separated. The screw hole (52E) is closed by sliding in the opposite direction as shown in the arrow E, and the screw rod (6) can be rotated to jack up.

In this embodiment, the sliding block (53A, 53B) is used as a sliding means for the upper half part (52A) and the lower half part (52B) which are the divided parts of the screw piece (52). As another moving means, as shown in FIG. 5, bolts are attached to the upper half portion (52A) and the lower half portion (52B) of the screw piece (52) in the vertical hole (51A) from the outside of the frame (51). (58A, 58B) are rotatably connected and the bolts (58A, 58B) are turned to separate the upper half portion (52A) and the lower half portion (52B), and the screw hole (52E) is opened. The screw rod (6) may be opened to allow sliding.

[0011]

[Effect of the device]

 Therefore, in the present invention, the jack can be moved up and down very easily and easily.

[0012]

[Brief description of drawings]

 1 to 4 show an embodiment of the present invention.

[Figure 1] Overall jack side view

[Fig. 2] Front sectional view of the nut block

3 is a sectional view taken along line AA in FIG.

FIG. 4 is a front sectional view of the nut block with the screw pieces separated.

FIG. 5 is a front sectional view of another embodiment.

FIG. 6 is an overall side view of a conventional jack.

[Explanation of symbols]

 1 Jack 5 Nut block 51 Cross frame 52 Screw piece 52A Upper half part 52B Lower half part 52C, 52D Key part 52E Screw hole 53A, 53B Sliding block 53C, 53D Key groove 53E, 53F Wedge surface 58A, 58B Bolt 6 Screw rod

Claims (1)

[Scope of utility model registration request] 1. A screw piece having a screw hole into which a screw rod of a pantograph-type jack is screwed, the screw piece being divided into two parts from the screw hole position.
A crosspiece frame into which the screw piece is loaded, and the screw piece split portion is slidable in the cross-opening direction in the crosspiece frame. The screw piece split portion is provided with a sliding means. Jack nut block characterized by