CN213505742U

CN213505742U - Scissor jack

Info

Publication number: CN213505742U
Application number: CN202022637567.3U
Authority: CN
Inventors: 胡志刚
Original assignee: Nanpi Wangyuan Hardware Manufacturing Co ltd
Current assignee: Nanpi Wangyuan Hardware Manufacturing Co ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-06-22
Anticipated expiration: 2030-11-16

Abstract

The utility model relates to a scissor jack, which comprises a base, wherein a lifting mechanism is arranged above the base, and a supporting seat is arranged above the lifting mechanism; elevating system includes first articulated arm and second articulated arm with base articulated respectively through the hinge, and the supporting seat passes through the hinge and articulates with third articulated arm and fourth articulated arm respectively, and first articulated arm is articulated each other through first articulated shaft with the other end of third articulated arm, and the second articulated arm is articulated each other through the second articulated shaft with the other end of fourth articulated arm, and first articulated shaft wears to be equipped with the lead screw respectively with the second articulated shaft and with lead screw threaded connection, and the supporting seat top is equipped with height-adjustable's height-compensating subassembly. The utility model discloses the jacking stroke of adjustable jack co-altitude guarantees the jacking stability of jack, improves the stationarity of jacking object.

Description

Scissor jack

Technical Field

The utility model relates to a jack technical field especially relates to a scissor jack.

Background

Jacks are tools often provided in vehicles for lifting the vehicle when needed. The height raised by the existing jack is usually fixed, when the jack needs to be raised to a higher height, only a mode of putting a wood block or a brick block into the bottom of the jack for padding is adopted, but the stability of the jack is greatly reduced when an object is jacked. Meanwhile, the screw threads of the lead screw in the lifting process of the existing jack are usually unidirectional, and the top of the jack can move in the vertical direction and the horizontal direction when lifted, so that the stability of jacking objects is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at making the jack can adjust the not co-altitude stroke, guarantee the stability of jack, improve the stationarity that promotes the object, the utility model provides a scissor jack.

The above object of the present invention can be achieved by the following technical solutions:

a scissor jack comprises a base, wherein a lifting mechanism is arranged above the base, and a supporting seat is arranged above the lifting mechanism; elevating system includes through the hinge respectively with base articulated first articulated arm and second articulated arm, the supporting seat passes through the hinge and articulates with third articulated arm and fourth articulated arm respectively, the other end of first articulated arm and third articulated arm is articulated each other through first articulated shaft, the other end of second articulated arm and fourth articulated arm is articulated each other through the second articulated shaft, first articulated shaft wear to be equipped with the lead screw respectively with the second articulated shaft and with lead screw threaded connection, the supporting seat top is equipped with height-adjustable's height-compensating subassembly.

The height compensation assembly comprises a fixing seat, a supporting rod and an adjusting block, the fixing seat is columnar, the fixing seat is fixedly connected to the supporting seat, the supporting rod is connected to the upper portion of the fixing seat, and the adjusting block is embedded in the upper end of the supporting rod.

In the scissor jack, the lower end of the supporting rod is provided with the external thread, the fixing seat is provided with the internal thread matched with the external thread, the upper end of the supporting rod is provided with the column-shaped convex block extending outwards, and the diameter of the convex block is the same as that of the fixing seat.

In the scissor jack, the adjusting block is columnar, the lower end of the adjusting block is provided with the mounting hole matched with the convex block, and the upper end of the adjusting block is provided with the anti-skid lines.

In the scissor jack, the cross section of each first articulated arm is u-shaped with an opening, the outer edge of one side of each first articulated arm in the length direction is provided with a pair of ribs which are turned outwards, and the other side of each first articulated arm is provided with a pair of tooth-shaped folds which are turned inwards; a T-shaped reinforcing rib plate bent towards the opening direction is arranged between the two tooth-shaped folding edges; the first hinge arm is identical in structure to the second hinge arm, the third hinge arm and the fourth hinge arm.

In the scissor jack, the first articulated shaft includes a shaft body, the shaft body is symmetrically provided with a pair of inward-recessed planar steps, the two planar steps are oppositely arranged and parallel to the axis of the shaft body, the planar steps are provided with internal thread holes perpendicular to the planar steps, the internal thread holes are matched with the lead screw, and two ends of the shaft body are provided with annular clamping grooves; the first hinge shaft and the second hinge shaft have the same structure.

In the scissor jack, the lead screw is provided with reverse lead screw threads along two sides of the center of the lead screw.

In the scissor jack, one end of the screw rod is fixedly connected with the plug connector, the screw rod adjacent to the plug connector is provided with the limiting blocking ring, the blocking ring is fixedly connected with the manual deflector rod, and the plug connector is connected with the adjusting wrench.

In the scissor jack, the plug connector is hexagonal prism, the plug connector is detachably connected with the adjusting wrench, the adjusting wrench is long-handle-shaped, the front end of the adjusting wrench is provided with the hexagon socket, and the hexagon socket is matched with the plug connector.

To sum up, the utility model discloses a beneficial technological effect does:

the utility model discloses a set up the height compensation subassembly, can adjust the whole height of jack according to actual conditions to adapt to different operating mode demands, need not to fill up the whole height that hard thing improved the jack below the jack, thereby improve the stability of jack.

The utility model discloses a set up two-way lead screw thread on the lead screw, when rotating the lead screw, the supporting seat removes along upper and lower direction, does not have the displacement at the horizontal direction, also can improve the stability of jack, ensures to promote the stationarity of object.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of a first hinge arm of the present invention;

fig. 3 is a schematic structural view of the support rod of the present invention;

FIG. 4 is a schematic structural view of the adjusting block of the present invention;

FIG. 5 is a schematic structural view of the screw of the present invention;

fig. 6 is a schematic structural view of a first hinge shaft of the present invention;

fig. 7 is a schematic structural diagram of the adjusting wrench of the present invention.

Figure, 1, base; 2. a lifting mechanism; 21. a hinge shaft; 22. a first hinge arm; 221. a rib; 222. folding the edges in a tooth shape; 223. a reinforcing rib plate; 23. a second hinge arm; 24. a third articulating arm; 25. a fourth hinge arm; 26. a first hinge shaft; 261. a shaft body; 262. a planar step; 263. an internally threaded bore; 264. an annular clamping groove; 27. a second hinge shaft; 28. a lead screw; 281. screw threads of the lead screw; 282. a plug-in connector; 283. a limit stop ring; 2831. a manual deflector rod; 3. a supporting seat; 4. a height compensation assembly; 41. a fixed seat; 42. a support bar; 421. an external thread; 422. a bump; 43. an adjusting block; 431. mounting holes; 44. anti-skid lines; 5. adjusting the wrench; 51. and (4) inner hexagonal holes.

Detailed Description

The present invention will be described in further detail with reference to the accompanying fig. 1 to 7.

As shown in fig. 1, a scissor jack comprises a base 1, a lifting mechanism 2 is arranged above the base 1, and a supporting seat 3 is arranged above the lifting mechanism 2; the lifting mechanism 2 comprises a first hinge arm 22 and a second hinge arm 23 which are respectively hinged with the base 1 through a hinge shaft 21, the supporting seat 3 is respectively hinged with a third hinge arm 24 and a fourth hinge arm 25 through the hinge shaft 21, the other ends of the first hinge arm 22 and the third hinge arm 24 are mutually hinged through a first hinge shaft 26, the other ends of the second hinge arm 23 and the fourth hinge arm 25 are mutually hinged through a second hinge shaft 27, a lead screw 28 is respectively arranged through the first hinge shaft 26 and the second hinge shaft 27 and is connected with a lead screw thread 281, and the first hinge shaft 26 and the second hinge shaft 27 can be close to or far away from each other by rotating the lead screw 28, so that the supporting seat 3 is lifted or lowered; a height compensation component 4 with adjustable height is arranged above the supporting seat 3.

As shown in fig. 1, 3, and 4, the height compensation assembly 4 of this embodiment includes a fixing seat 41, a supporting rod 42, and an adjusting block 43, where the fixing seat 41 is in a column shape, the fixing seat 41 is fixedly connected to the supporting seat 3, the lower end of the supporting rod 42 is provided with an external thread 421, the fixing seat 41 is provided with an internal thread adapted to the external thread 421, the supporting rod 42 is in threaded connection with the upper side of the fixing seat 41, the upper end of the supporting rod 42 is provided with a column-shaped protrusion 422 extending outward, the diameter of the protrusion 422 is the same as that of the fixing seat 41, and; the adjusting block 43 is columnar, the lower end of the adjusting block 43 is provided with a mounting hole 431 matched with the convex block 422, and the upper end of the adjusting block 43 is provided with anti-skid grains 44.

The height compensation assembly 4 is arranged, so that height compensation can be carried out according to the distance between the jack and an object to be jacked actually. Specifically, when the maximum height of the jack does not reach the height to be lifted, the supporting rod 42 may be screwed on the fixing base 41, and the adjusting block 43 may be embedded on the supporting rod 42 for height compensation.

If the height of the jack does not need to be compensated by the supporting rod 42, the diameter of the projection 422 is the same as that of the fixing seat 41, so that the outer diameter of the fixing seat 41 is the same as the inner diameter of the mounting hole 431 at the lower end of the adjusting block 43, and the adjusting block 43 can be embedded on the fixing seat 41.

Because the diameter of the convex block 422 is the same as that of the fixed seat 41, the mounting hole 431 at the lower end of the adjusting block 43 can be conveniently embedded with the convex block 422 at the upper end of the supporting rod 42 or embedded with the fixed seat 41.

As shown in fig. 2, the first hinge arm 22 of this embodiment has an open u-shape in cross section, and the first hinge arm 22 has a pair of ribs 221 outwardly turned at one outer edge along the length direction and a pair of tooth-shaped folds 222 inwardly turned at the other end; a T-shaped reinforcing rib plate 223 bent towards the opening direction is arranged between the two tooth-shaped folding edges 222; the first hinge arm 22 of this embodiment is identical in construction to the second hinge arm 23, the third hinge arm 24 and the fourth hinge arm 25.

The provision of the pair of ribs 221 and the pair of tooth-shaped folds 222 and the reinforcing rib 223 can improve the strength of the articulated arm.

As shown in fig. 1, the u-shaped openings of the four hinge arms of the present invention are facing inward, the tooth-shaped flanges 222 of the first hinge arm 22 and the second hinge arm 23 close to the base 1 are engaged with each other, and the tooth-shaped flanges 222 of the third hinge arm 24 and the fourth hinge arm 25 close to the support base 3 are engaged with each other.

As shown in fig. 5, one end of the screw 28 is fixedly connected with the plug 282, the plug 282 is hexagonal prism, the screw 28 adjacent to the plug 282 is provided with a limit stop ring 283, the limit stop ring 283 is fixedly connected with the manual lever 2831, and the plug 282 is connected with the adjusting wrench 5.

When the jack is far away from an object to be jacked, the manual shift lever 2831 can be rotated by hands in advance, so that the speed of rotating the lead screw 28 can be increased, jacking efficiency is improved, and jacking time is shortened; the adjustment wrench 5 is used to rotate the lead screw 28 when the jack is close to the object to be jacked.

The lead screw 28 of this embodiment is provided with reverse lead screw threads 281 along both sides of the center of the lead screw 28.

Through set up reverse lead screw thread 281 in lead screw 28 central authorities both sides, when rotating lead screw 28, first articulated shaft 26 can be close to each other simultaneously or keep away from with second articulated shaft 27, makes supporting seat 3 remove in upper and lower direction, does not have the removal at the horizontal direction, and this has guaranteed the steady of jacking object, has improved the security of jacking object.

As shown in fig. 1 and 6, the first hinge shaft 26 of the present embodiment includes a shaft body 261, the shaft body 261 is symmetrically provided with a pair of inwardly recessed planar steps 262, the two planar steps 262 are oppositely disposed and parallel to the axis of the shaft body 261, the planar steps 262 are provided with internal threaded holes 263 perpendicular thereto, the internal threaded holes 263 are adapted to the lead screw 28, two ends of the shaft body 261 are provided with annular snap grooves 264, and after the first hinge shaft 26 is rotatably connected to the first hinge arm 22 and the third hinge arm 24, elastic snap springs are snapped in the annular snap grooves 264 at two ends of the shaft body 261 on the first hinge shaft 26; the first hinge shaft 26 has the same structure as the second hinge shaft 27; similarly, after the second hinge shaft 27 is rotatably connected to the second hinge arm 23 and the fourth hinge arm 25, the elastic snap springs are engaged in the ring-shaped engaging grooves 264 formed at both ends of the shaft body 261 of the second hinge shaft 27.

As shown in fig. 1 and 7, the plug connector 282 is detachably connected with the adjusting wrench 5, the adjusting wrench 5 is in a long handle shape, the front end of the adjusting wrench 5 is provided with a hexagon socket 51, and the hexagon socket 51 is matched with the plug connector 282. The jack can be dismantled and connect regulation spanner 5, makes things convenient for depositing and transporting of jack, through adjusting spanner 5 can convenient and fast's rotation lead screw 28, reaches the purpose of jacking object.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A scissor jack, characterized in that it comprises a base, a lifting mechanism is provided above the base, and a support base is provided above the lifting mechanism; the lifting mechanism comprises a first hinged arm and The second hinge arm, the support base is hinged with the third hinge arm and the fourth hinge arm respectively through the hinge shaft, the other ends of the first hinge arm and the third hinge arm are hinged with each other through the first hinge shaft, the first hinge arm The other ends of the second hinge arm and the fourth hinge arm are hinged to each other through a second hinge shaft. The first hinge shaft and the second hinge shaft are respectively provided with lead screws and are threadedly connected with the lead screws. Height compensating assembly with adjustable height.

2 . The scissor jack according to claim 1 , wherein the height compensation component comprises a fixed seat, a support rod and an adjusting block, the fixed seat is cylindrical, and the fixed seat is fixedly connected to the support seat, 2 . A support rod is connected above the fixed seat, and the adjusting block is embedded in the upper end of the support rod.

3. The scissor jack according to claim 2, wherein the lower end of the support rod is provided with an external thread, the fixing seat is provided with an internal thread adapted to the external thread, and the upper end of the support rod is provided with an external thread. A cylindrical protrusion extending outward, the diameter of the protrusion is the same as that of the fixing seat.

4 . The scissor jack according to claim 3 , wherein the adjustment block is cylindrical, the lower end of the adjustment block is provided with a mounting hole adapted to the convex block, and the upper end of the adjustment block is provided with an anti-slip pattern. 5 .

5 . The scissor jack according to claim 1 , wherein the cross-section of the first hinged arm is in the shape of an opening, and the outer edge of the first hinged arm along one side in the length direction is provided with an outward-facing edge. 6 . A pair of folded ribs is provided with a pair of tooth-shaped folded edges folded inwardly on the other side; a T-shaped reinforcing rib is arranged between the two tooth-shaped folded edges and bent toward the opening direction; The first hinged arm has the same structure as the second hinged arm, the third hinged arm and the fourth hinged arm.

6 . The scissor jack according to claim 1 , wherein the first hinge shaft comprises a shaft body, and the shaft body is symmetrically provided with a pair of plane steps recessed inward, and the two plane steps are oppositely arranged. 7 . and parallel to the axis of the shaft body, the plane step is provided with a vertical inner threaded hole, the inner threaded hole is adapted to the lead screw, the two ends of the shaft body are provided with annular clamping grooves; the first The hinge shaft has the same structure as the second hinge shaft.

7 . The scissor jack according to claim 1 , wherein the lead screw is provided with reverse lead screw threads along both sides of the center of the lead screw. 8 .

8. The scissor jack according to claim 1 or 7, wherein one end of the lead screw is fixedly connected to a plug connector, and a lead screw adjacent to the plug connector is provided with a limit stop ring, and a limit stop ring is provided on the limit stop ring. The manual lever is fixedly connected, and the plug connector is connected with the adjustment wrench.

9 . The scissor jack according to claim 8 , wherein the plug connector is in the form of a hexagonal prism, the plug connector is detachably connected to an adjustment wrench, the adjustment wrench is in the shape of a long handle, and the The front end is provided with an inner hexagonal hole, and the inner hexagonal hole is adapted to the plug connector.