CN210389010U

CN210389010U - Chain screw wrench

Info

Publication number: CN210389010U
Application number: CN201920735228.3U
Authority: CN
Inventors: 马骥; 解小琴; 刘贵彬; 胡建娟; 梁文铨
Original assignee: Bazhong Vocational And Technical College
Current assignee: Bazhong Vocational And Technical College
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2020-04-24
Anticipated expiration: 2029-05-22

Abstract

The utility model provides a chain screw rod spanner, it includes the lead screw, the adjusting nut of assembly on the lead screw, connect the tight chain of clamp and the universal device at the adjusting nut outer wall, the tight chain of clamp includes first chain, second chain and third chain, first chain and second chain are connected to adjusting nut's outer wall, the first end of third chain and lead screw constitutes the bayonet socket of chucking work piece, at least one in first chain and the second chain and adjusting nut's outer wall swing joint, the universal device sets up in the first end of lead screw. One end of the universal device can rotate relative to the other end, the workpiece is clamped at the best acting point when the special-shaped workpiece is clamped, and the chain screw wrench is prevented from slipping when the workpiece is clamped, so that the working efficiency is improved.

Description

Chain screw wrench

Technical Field

The utility model relates to an instrument field particularly, relates to a chain screw rod spanner.

Background

The specifications of the adjustable spanner and the fixed spanner in the prior art are many, and usually, one specification of spanner can only lock or loosen one or more specifications of workpieces. When a worker works, the worker may encounter workpieces to be locked or loosened with various specifications on one device, and the work efficiency of an operator is reduced by frequently changing the wrench. The prior art has the defect that the working efficiency of the special-shaped workpiece is relatively low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a chain screw rod spanner, it is higher to the work efficiency of special-shaped workpiece.

The embodiment of the utility model is realized like this:

the utility model provides a chain screw rod spanner, it includes the lead screw, the adjusting nut of assembly on the lead screw, connect the tight chain of clamp and the universal device at the adjusting nut outer wall, press from both sides tight chain and include first chain, second chain and third chain, first chain and second chain are connected to adjusting nut's outer wall, the bayonet socket of chucking work piece is constituted to the first end of third chain and lead screw, at least one in first chain and the second chain and adjusting nut's outer wall swing joint, universal device sets up in the first end of lead screw.

In a preferred embodiment of the present invention, at least one of the first chain and the second chain is provided with a latch piece, and the latch piece is disposed inside the first chain or the second chain.

In the preferred embodiment of the present invention, the side wall of the adjusting nut is provided with a clamping groove matching with the shape of the clamping piece, and the clamping groove extends along the axial direction of the adjusting nut.

In the preferred embodiment of the present invention, the universal device includes a universal joint and a clamping block, one end of the universal joint is connected to the first end of the screw, and the other end of the universal joint is connected to the clamping block.

In a preferred embodiment of the invention, the top of the clamping block has a projection towards the workpiece.

In the preferred embodiment of the present invention, the chain screw wrench further comprises an electric rotating assembly, the electric rotating assembly comprises a motor for driving the screw and a storage battery electrically connected to the motor, the motor is disposed at the second end of the screw, and the storage battery is disposed at the end of the motor.

In a preferred embodiment of the present invention, the electric rotating assembly further comprises a bearing, an inner ring of the bearing is connected to the first end of the screw, and an outer ring of the bearing is connected to the universal joint.

The embodiment of the utility model provides a beneficial effect is: the chain screw wrench comprises a screw rod, an adjusting nut, a clamping chain and a universal device, wherein two ends of the clamping chain are connected with the screw rod, a bayonet is formed between the end part of the screw rod and the clamping chain, and the bayonet can be used for placing workpieces in regular shapes and irregular shapes; one end of the universal device can rotate relative to the other end, the workpiece is clamped at the best acting point when the special-shaped workpiece is clamped, and the chain screw wrench is prevented from slipping when the workpiece is clamped, so that the working efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic perspective view of a chain screw wrench according to an embodiment of the present invention;

fig. 2 is another perspective view of a chain screw wrench according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of a connecting device and an adjusting nut according to an embodiment of the present invention;

fig. 4 is a schematic perspective view of a universal device and a lead screw according to an embodiment of the present invention;

fig. 5 is a schematic cross-sectional view of a card tab and a card slot disclosed in the embodiment of the present invention.

Icon: 10-chain screw wrench; 100-lead screw; 111-a first end; 112-a second end; 200-adjusting the nut; 300-clamping the chain; 310-a first chain; 320-a second chain; 330-a third chain; 340-bayonet; 400-a gimbal device; 411-a first rotating shaft; 412-a first connector; 413-first connecting shaft; 421-a second rotating shaft; 422-a second linker; 423-second connecting shaft; 430-a clamping block; 500-a snap tab; 510-a clamping groove; 610-a motor; 620-bearing; 640-a storage battery; 700-a connection means; 710-a magnet; 711-magnetic stripe slot; 720-snap ring; 721-a pivot axis; 730-a fixation sleeve; 810-handle.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, 2 and 4, the present embodiment discloses a chain screw wrench 10, which includes a screw 100, an adjusting nut 200, a clamping chain 300 and a universal device 400, wherein the adjusting nut 200 is assembled on the screw 100, the clamping chain 300 is connected to an outer wall of the adjusting nut 200, and the universal device 400 is disposed at a first end of the screw 100.

The clamping chain 300 comprises a first chain 310, a second chain 320 and a third chain 330, wherein the first chain 310 and the second chain 320 are connected to the outer wall of the adjusting nut 200, and the third chain 330 and the first end of the lead screw 100 form a bayonet 340 for clamping a workpiece. The clamping chain 300 is a flexible clamping member, it being understood that the clamping chain 300 may be replaced by a belt or other flexible band. The clamping chain 300 may clamp a regular or irregular shaped workpiece.

At least one of the first chain 310 and the second chain 320 is movably connected with an outer wall of the adjusting nut 200. In this embodiment, the first chain 310 is connected to the adjusting nut 200 through the connecting device 700, and the second chain 310 is fixedly connected to the adjusting nut 200. In other embodiments, the second chain 320 may be selected to be movably connected to the adjusting nut 200, or both the first chain 310 and the second chain 320 may be selected to be movably connected to the adjusting nut 200.

At least one of the first and

second chains

310 and 320 is provided with a clamping piece 500, the clamping piece 500 is arranged at the inner side of the first or

second chain

310 or 320, or at least one of the first and

second chains

310 and 320 is connected with the adjusting nut 200 through the clamping piece 500. Referring to fig. 5, in the present embodiment, the clamping piece 500 is disposed at an inner side of the first chain 310, the clamping piece 500 is sleeved outside the first chain 310, the clamping piece 500 is slidable relative to the first chain 310 to adjust the size of the bayonet 340, and the second chain 320 is fixedly connected to the adjusting nut 200. The lateral wall of adjusting nut 200 is seted up the joint groove 510 that matches with joint piece 500 shape, and joint groove 510 extends along the axial direction of adjusting nut 200, and joint groove 510 is blind groove. After the chain screw wrench 10 clamps the workpiece, the clamping piece 500 is clamped in the clamping groove 510 by the tension of the clamping chain 300. When clamping the work piece, can follow joint groove 510 and take off joint piece 500, put into the work piece and press from both sides tight work piece again behind bayonet 340, save the time of placing the work piece, the efficiency is higher when the centre gripping work piece.

Referring to fig. 3, in another embodiment, the chain screw wrench 10 further includes a connecting device 700, the connecting device 700 includes a magnet 710, a snap ring 720 and a fixing sleeve 730, the side wall of the adjusting nut 200 is provided with a plurality of magnetic stripe grooves 711 for mounting the magnet 710, the magnetic stripe grooves 711 are arranged at intervals along the axial direction of the adjusting nut 200, and in the embodiment, the adjusting nut 200 is provided with six magnetic stripe grooves 711. The fixing sleeve 710 is fixedly connected with the side wall of the adjusting nut 200. The cross-sectional shape of the snap ring 720 is a spiral. The snap ring 720 is engaged with the fixing cover 710 through the pivot shaft 721 so that the snap ring 720 can rotate relative to the fixing cover 710, and when the fixing cover 710 is opened to attach the first chain 310 and the second chain 320 to the magnet 710, the snap ring 720 is rotated to attach the snap ring 720 to the magnet 710, thereby fixing the first chain 310 and the second chain 320 to the magnet 710. When clamping a workpiece, the snap ring 720 can be opened to separate the first chain 310 from the magnet 710, so that the workpiece can be conveniently placed, and the workpiece can be clamped after being placed into the bayonet 340, so that the time for placing the workpiece is saved, and the efficiency is higher when clamping the workpiece.

The adjusting nut 200 is sleeved outside the lead screw 100, and the lead screw 100 and the adjusting nut 200 form a lead screw nut mechanism. A bayonet 340 for placing a workpiece is formed between the screw 100 and the clamping chain 300. When the screw 100 rotates forwards and backwards, the adjusting nut 200 moves forwards and backwards along the axial direction of the screw 100, and as the second chain 320 and the third chain 330 are respectively fixedly connected with the outer wall of the adjusting nut 200, the adjusting nut 200 drives the second chain 320 and the third chain 330 to move forwards and backwards along the axial direction of the screw 100, so that the size of the adjusting bayonet 340 clamps the workpiece.

Referring to fig. 4, in the embodiment, the first end 111 of the screw 100 is provided with the universal device 400, because the force points of clamping the workpiece are different when the workpiece encounters a special-shaped workpiece, the universal device 400 is fixedly connected with the screw 100, one end of the universal device 400 can rotate at any angle relative to the other end, and the universal device 400 clamps the workpiece at the optimal force point when clamping the special-shaped workpiece, so that the chain screw wrench 10 is prevented from slipping when clamping the workpiece, and the working efficiency is improved.

The gimbal arrangement 400 in this embodiment comprises a gimbal and clamping block 430, both ends of the gimbal being connected to a first end of the lead screw 100 and the clamping block 430, respectively. The universal joint includes a first rotation shaft 411, a first connection body 412, a first connection shaft 413, a second rotation shaft 421, and a second connection shaft 422. In the present embodiment, the first rotating shaft 411 is connected to the inner race of the bearing 620, so that the first rotating shaft 411 is rotatable with respect to the lead screw 100; it should be understood that the first rotating shaft 411 may be directly connected to the lead screw 100, or the first rotating shaft 411 may be indirectly connected with the lead screw 100 through other means. The first connecting body 412 is fixedly connected to the first rotating shaft, the first connecting shaft 413 is in clearance fit with the mounting hole of the first connecting body 412, and the first connecting shaft 413 can rotate relative to the first connecting body 412. The second connecting shaft 413 is fixedly connected with the second connecting shaft 423, the second connecting shaft 413 is in clearance fit with the mounting hole of the second connecting body 422, the second connecting shaft 413 can rotate relative to the second connecting body 422, and the second connecting body 422 is fixedly connected with the second rotating shaft 421. Since the first rotating shaft 411 is rotatable with respect to the screw 100, the first connecting shaft 413 is rotatable with respect to the first connecting body 412, and the second connecting shaft 423 is rotatable with respect to the second connecting body 422, the universal device 400 can grip a workpiece at an optimum force point when gripping the workpiece.

The clamping block 430 is fixedly connected with the second connecting shaft 423. The clamping block 430 in this embodiment is a rubber block, and the top of the clamping block 430 protrudes toward the workpiece, so as to prevent the workpiece from being damaged when the workpiece is clamped, and the rubber block slightly deforms when the workpiece is pressed, and rebounds to the original shape when the workpiece is released, so that the clamping is more stable.

Referring back to fig. 1, 2 and 4, the chain screw wrench 10 in this embodiment further includes an electric rotating assembly including a motor 610, a bearing 620 and a battery 640. The motor 610 is disposed at the second end 112 of the lead screw 100. The battery 640 is disposed at an end of the motor 610, and the motor 510 is electrically connected to the battery 640.

When the electric rotating assembly is held by a hand in use, the lead screw 100 is driven to rotate through forward rotation and reverse rotation of the motor 610, so that the adjusting nut 200 moves back and forth on the lead screw 100 along the axial direction of the lead screw 100. The inner race of the bearing 620 is connected to the first end 111 of the lead screw 100. The inner race of the bearing 620 is connected to the first end of the leadscrew 100 and the outer race of the bearing 620 is connected to the gimbal 410 so that the position of the gimbal 410 remains unchanged when the leadscrew is rotated. In addition, the chain screw wrench 10 further includes a handle 810, the handle 810 being disposed at an end of the power swivel assembly, the handle 810 being a dial.

The method of operation of the chain screw wrench 10 in this embodiment is as follows: when the length of the chain or the bayonet 340 is not enough to put the workpiece, the first chain 310 is opened, the workpiece is put into the area of the bayonet 340, and then the clamping is carried out to clamp the clamping piece 500 in the clamping groove 510; the universal device 400 is placed at a proper position of a workpiece, the motor 610 positively rotates to drive the lead screw 100 to rotate, and the lead screw 100 rotates until the third chain 330 and the universal device 400 clamp the workpiece; when the workpiece is loosened, the motor 610 rotates reversely, and the wrench can be taken down when the space of the bayonet 340 is large enough. Therefore, the chain screw wrench 10 has high work efficiency for a workpiece having a regular or irregular outer shape.

This description describes examples of embodiments of the invention, and is not intended to illustrate and describe all possible forms of the invention. It should be understood that the embodiments described in this specification can be implemented in many alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Specific structural and functional details disclosed are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention. It will be appreciated by persons skilled in the art that a plurality of features illustrated and described with reference to any one of the figures may be combined with features illustrated in one or more other figures to form embodiments which are not explicitly illustrated or described. The described combination of features provides a representative embodiment for a typical application. However, various combinations and modifications of the features consistent with the teachings of the present invention may be used as desired for particular applications or implementations.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a chain screw rod spanner, its characterized in that, it includes the lead screw, assembles adjusting nut on the lead screw, connects clamping chain and the universal device of adjusting nut outer wall, clamping chain includes first chain, second chain and third chain, first chain with the second chain is connected to adjusting nut's outer wall, the third chain with the bayonet socket of chucking work piece is constituted to the first end of lead screw, first chain with in at least one of second chain with adjusting nut's outer wall swing joint, universal device set up in the lead screw first end.

2. The chain screw wrench of claim 1, wherein at least one of the first chain and the second chain has a catch provided thereon, the catch being disposed on an inner side of the first chain or the second chain.

3. The chain screw wrench of claim 2, wherein the side wall of the adjusting nut is provided with a clamping groove matched with the clamping piece in shape, and the clamping groove extends along the axial direction of the adjusting nut.

4. The chain screw wrench of claim 1, wherein the universal device includes a universal joint and a clamping block, one end of the universal joint being connected to the first end of the lead screw and the other end of the universal joint being connected to the clamping block.

5. A chain screw wrench as claimed in claim 4, in which the top of the gripping block has a projection towards the workpiece.

6. The chain screw wrench of claim 4, further comprising an electrical rotating assembly including a motor driving the lead screw and a battery electrically connected to the motor, the motor being disposed at a second end of the lead screw and the battery being disposed at an end of the motor.

7. The chain screw wrench of claim 6, wherein the electrical rotating assembly further includes a bearing, an inner race of the bearing being connected to the first end of the lead screw, an outer race of the bearing being connected to the universal joint.