CN216067207U

CN216067207U - Lengthened wrench

Info

Publication number: CN216067207U
Application number: CN202121661364.6U
Authority: CN
Inventors: 邵将
Original assignee: Electric Power Engineering Branch Huadian Hubei Power Generation Co ltd
Current assignee: Electric Power Engineering Branch Huadian Hubei Power Generation Co ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2022-03-18
Anticipated expiration: 2031-07-21

Abstract

The utility model discloses a lengthened wrench, belonging to the technical field of fastening tools of bolts and nuts; it includes: the wrench comprises a wrench head and a wrench handle connected with the wrench head; the wrench head comprises a wrench head main body, a replaceable nut sleeve and a nut sleeve fixing unit, the nut sleeve is embedded in the wrench head main body, and the nut sleeve fixing unit is arranged close to the nut sleeve. The wrench handle comprises at least two detachable connecting pieces connected end to end, any connecting piece positioned at the end part is fixedly connected with the wrench head main body, the connecting piece comprises a first connecting part, a second connecting part and a hinge part for connecting the first connecting part and the second connecting part, the connecting piece has a first position and a second position which can be locked, and when the first position is reached, the first connecting part and the second connecting part are arranged in parallel and locked; when in the second position, the first connecting part and the second connecting part are vertically arranged. The utility model can be lengthened and bent according to requirements, and is suitable for complex working environments.

Description

Lengthened wrench

Technical Field

The utility model relates to the technical field of fastening tools for bolts and nuts, in particular to a lengthened wrench.

Background

A wrench is a common installation and removal tool. Hand tools for turning bolts, screws, nuts and other threaded fasteners for tightening openings or trepanning of bolts or nuts using the principle of leverage. The wrench is usually provided with an opening or a trepan for clamping the handle part and applying external force to the handle part so as to screw the bolt or the nut to hold the bolt or the nut, at one end or two ends of the handle part. When the screw is used, external force is applied to the handle part along the rotation direction of the screw thread, and the bolt or the nut can be screwed.

The utility model with publication number CN202412103U discloses a socket wrench head, which comprises: the wrench head comprises a wrench head body and a plurality of bearing parts, wherein a first accommodating unit for accommodating any one bearing part is arranged in the wrench head body, and a locking/unlocking device for locking and unlocking any one bearing part is arranged on the side surface of the wrench head body.

The prior socket wrench does not consider that the wrench socket mainly bears circumferential torque in use and only receives a small amount of axial force when being inserted into a nut or a bolt, and the locking/unlocking device is too complicated and not practical. Meanwhile, in actual operation, parts needing to be maintained are often in a narrow space, and the wrench cannot stretch into the narrow space at all to be operated and maintained. Or the length of the wrench is not enough, and the wrench cannot act on a maintenance part.

SUMMERY OF THE UTILITY MODEL

In view of the above, a need exists for a lengthened wrench to solve the problems of inconvenient locking and low flexibility of the conventional socket wrench.

The utility model provides a lengthened wrench, comprising: the wrench comprises a wrench head and a wrench handle connected with the wrench head;

the wrench head comprises a wrench head main body, a replaceable nut sleeve and a nut sleeve fixing unit, the nut sleeve is embedded in the wrench head main body, and the nut sleeve fixing unit is arranged close to the nut sleeve so as to lock or loosen the connection between the nut sleeve and the wrench head main body;

the wrench handle comprises at least two detachable connecting pieces connected end to end, any connecting piece positioned at the end part is fixedly connected with the wrench head main body, the connecting piece comprises a first connecting part, a second connecting part and a hinge part for connecting the first connecting part and the second connecting part, the connecting piece is provided with a first position and a second position which can be locked, and the first connecting part and the second connecting part are arranged in parallel and locked when in the first position; when in the second position, the first connecting part and the second connecting part are vertically arranged.

Further, the middle part of spanner head main part is equipped with the fixed orifices, the cross-section of fixed orifices is polygonized structure, the outside cross-section of nut cover be with the polygonized structure that the fixed orifices is unanimous, the nut cover inlays to be located in the fixed orifices, the inside cross-section of nut cover is the regular hexagon with nut looks adaptation.

Further, the fixed unit of nut cover is including inlaying and locating the flux sleeve in the wrench head main part and setting up the magnetic pole piece in the flux sleeve, the flux sleeve is interrupted to set up and is close to the fixed orifices is arranged, the magnetic pole piece with the flux sleeve rotates to be connected, so that through rotating the magnetic pole piece changes the magnetic pole direction, comes the switching right the attraction of nut cover.

Furthermore, a non-ferromagnetic partition plate arranged opposite to the nut sleeve is arranged in the magnetic sleeve, and the partition plate partitions the magnetic sleeve into two parts.

Furthermore, one end of each connecting piece is provided with an inserting hole, the other end of each connecting piece is provided with an inserting head matched with the inserting hole, and the inserting heads of the two adjacent connecting pieces are inserted into the inserting holes.

Furthermore, the section of the inner hole of the plug hole is polygonal, the section of the plug connector is polygonal and is matched with the plug hole, and an anti-falling unit for locking connection is arranged between the plug hole and the plug connector.

Furthermore, the anti-drop unit comprises a counter bore arranged in the plug, a telescopic column arranged in the counter bore and an elastic piece, the counter bore is perpendicular to the surface of the plug, and the elastic piece is connected with the inner wall of the counter bore and the telescopic column; the plug hole is internally provided with a through hole which is clamped with the telescopic column, and the telescopic piece which protrudes out of the plug connector is clamped with the through hole.

Furthermore, the through hole is arranged on the plug hole and is vertical to the inner hole wall of the plug hole, and a through hole is arranged on each surface of the polygonal inner hole of the plug hole.

Furthermore, the middle part of the connecting piece is provided with a hinge part and a sleeve sleeved on the connecting piece, the connecting pieces on two sides of the hinge part are coaxially arranged at parallel positions, and the sleeve is sleeved on the hinge part to prevent the hinge part from rotating mutually; in the vertical position, the connecting pieces on the two sides of the hinge part are vertically arranged and mutually abutted.

Furthermore, one end of the connecting piece, which is close to the hinged part, is provided with an elastic ring matched with the sleeve, and one end of the connecting piece, which is far away from the hinged part, is provided with a boss abutted to the sleeve.

Compared with the prior art, the utility model has the beneficial effects that:

(1) according to the lengthened wrench, the replaceable nut sleeve is arranged in the wrench head, so that the wrench can handle nuts or bolts of different types, the nut sleeve fixing unit is arranged on one side of the nut sleeve, and the nut sleeve is locked through magnetic force, so that the nut sleeve is prevented from being separated.

(2) According to the lengthened wrench, the connecting pieces which can be detachably connected with each other form the wrench handle, the wrench handle can be lengthened or shortened by increasing or decreasing the number of the connecting pieces, and meanwhile, the connecting pieces can be bent according to requirements due to the fact that the hinged portions are arranged on the connecting pieces, so that the lengthened wrench is suitable for complex operation spaces.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of a nut sleeve fixing unit according to the present invention

FIG. 3 is a schematic view showing the structure of the connector of the present invention;

FIG. 4 is a schematic cross-sectional view taken at A-A' of FIG. 1;

in the drawing, a wrench head 100, a wrench head body 110, a fixing hole 111, a nut 120, a nut fixing unit 130, a flux sleeve 131, a pole piece 132, a non-ferromagnetic partition plate 133, a wrench handle 200, a connector 210, a first connector 211, an insertion hole 211a, an elastic ring 211b, a hinge 212, a second connector 213, an insertion head 213a, a boss 213b, a sleeve 214, an anti-slip unit 220, a counter bore 221, a telescopic column 222, an elastic member 223, and a through hole 224.

Detailed Description

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the utility model and together with the description, serve to explain the principles of the utility model and not to limit the scope of the utility model.

Referring to fig. 1, an extension wrench in this embodiment includes: the wrench head 100 and the wrench handle 200 coupled to the wrench head 100, the wrench head 100 can replace different sized nut sockets 120 to fit different sized nuts or bolts. The wrench handle 200 can be lengthened and folded, and can operate complex disassembly and assembly structures in complex space.

Referring to fig. 1, the wrench head 100 includes a wrench head body 110, a replaceable nut sleeve 120, and a nut sleeve fixing unit 130, the nut sleeve 120 is embedded in the wrench head body 110, the nut sleeve fixing unit 130 is disposed adjacent to the nut sleeve 120, the nut sleeve fixing unit 130 can lock and loosen the connection between the nut sleeve 120 and the wrench head body 110, and the nut sleeve fixing unit 130 locks the nut sleeve 120 during the process of inserting the nut sleeve 120 in the wrench head body 110 into a nut or a bolt, so as to prevent an external force from ejecting the nut sleeve 120 from the wrench head body 110.

As a further embodiment, the wrench head body 110 has a fixing hole 111 at a middle portion thereof, the fixing hole 111 has a polygonal cross-section, and specifically, the fixing hole 111 has a regular polygon cross-section, the nut 120 has a polygonal cross-section corresponding to the fixing hole 111, the nut 120 is inserted into the fixing hole 111, and the nut 120 has a regular hexagon inner cross-section corresponding to a nut or a bolt. In the specific implementation process, the fixing hole 111 is a regular octagon, the depth of the fixing hole 111 is greater than the height of the nut sleeve 120, and the outer wall of the nut sleeve 120 is connected with the fixing hole 111 in a sliding mode. And the nut case 120 is made of metal having ferromagnetism, and can be attracted by a magnet.

Referring to fig. 1 and 2, the nut fixing unit 130 includes a flux sleeve 131 embedded in the wrench head main body 110 and a magnetic pole piece 132 disposed in the flux sleeve 131, the flux sleeve 131 is disposed intermittently and is adjacent to the fixing hole 111, and the magnetic pole piece 132 is rotatably connected to the flux sleeve 131. In the specific implementation process, a magnetic conductive hole is arranged in the wrench head main body 110 and is close to the fixing hole 111, the magnetic conductive sleeve 131 is inserted into the magnetic conductive hole and is fixedly connected with the hole wall of the magnetic conductive hole, the magnetic pole piece 132 is specifically a magnet with "N" and "S" polarities, the magnetic pole piece 132 is inserted into the magnetic conductive sleeve 131 and is rotatably connected with the magnetic conductive sleeve 131, a flat slot is arranged outside the magnetic pole piece 132, a flat screwdriver can be used for driving the magnetic pole piece 132 to rotate in the magnetic conductive sleeve 131, the magnetic conductive sleeve 131 is separated into two parts to form an unclosed magnetic loop, and when the magnet rotates, the magnetic direction can be adjusted, so that the control of the suction force of the nut sleeve 120 is realized.

As a further embodiment, a non-ferromagnetic partition plate 133 is disposed in the flux sleeve 131 opposite to the nut sleeve 120, and the non-ferromagnetic partition plate 133 divides the flux sleeve 131 into two parts. The non-ferromagnetic partition plate 133 is filled at the partition of the flux sleeve 131, and the non-ferromagnetic partition plate 133 is specifically a brass plate.

Referring to fig. 3 and 4, the wrench handle 200 includes at least two detachable connectors 210 connected end to end, and any one of the connectors 210 at the end is fixedly connected to the wrench head main body 110, and the connector 210 includes a first connector 211, a second connector 213, and a hinge 212 connecting the first connector 211 and the second connector 213. The end of the first connecting portion 211, which is far away from the hinge portion 212, is provided with a plugging hole 211a, the end of the second connecting portion 213, which is far away from the hinge portion 212, is provided with a plugging head 213a matched with the plugging hole 211a, and the plugging heads 213a of the two adjacent connecting members 210 are inserted into the plugging hole 211 a. In the specific implementation process, the cross section of the inner hole of the insertion hole 211a is polygonal, and the cross section of the insertion connector 213a is polygonal matched with the insertion hole 211 a. The polygon is a regular polygon, preferably a regular quadrangle, and an anti-falling unit 220 for locking connection is disposed between the insertion hole 211a and the insertion head 213 a.

Referring to fig. 4, the anti-dropping unit 220 includes a counterbore 221 disposed in the connector 213a, a telescopic column 222 disposed in the counterbore 221, and an elastic member 223, wherein the elastic member 223 connects an inner wall of the counterbore 221 and the telescopic column 222; the first connection portion 211 is provided with a through hole 224 communicated with the insertion hole 211a, and the telescopic member protruding out of the insertion head 213a is clamped with the through hole 224. In a specific implementation process, the cross sections of the counterbore 221, the telescopic column 222 and the through hole 224 are all circular, the elastic member 223 is specifically a spring, and two ends of the spring are fixedly connected with the bottom of the counterbore 221 and the bottom of the telescopic column 222 respectively. The telescopic column 222 protrudes out of the plug 213a in a normal state, the top of the telescopic column 222 is hemispherical, and after the plug 213a is inserted into the plug hole 211a, the telescopic column 222 is inserted into the through hole 224, thereby completing the locking of the plug 213a and the plug hole 211 a. By using an external socket needle, the telescopic column 222 in the through hole 224 can be pushed into the counterbore 221, and the locking of the plug 213a and the plug hole 211a is released.

As a further embodiment, the through hole 224 is perpendicular to the wall of the insertion hole 211a, and each surface of the inner hole of the polygonal insertion hole 211a is provided with the through hole 224. In a specific implementation process, the anti-falling off unit 220 in the plug 213a is disposed on one surface of the plug 213a, and the plug 213a and the insertion hole 211a can be locked at an angle of each surface by rotating the plug 213 a.

Referring to fig. 3, the connecting member 210 is sleeved with a sleeve 214, the connecting member 21 has a first position and a second position capable of being locked, when the connecting member is in the first position, the first connecting portion 211 and the second connecting portion 213 are disposed in parallel, and the sleeve 214 is sleeved on the hinge portion 212 for preventing the first connecting portion 211 and the second connecting portion from rotating relative to each other. In the second position, the first connection portion 211 and the second connection portion 213 are vertically disposed and abut against each other. In a specific implementation process, the hinge portion 212 is a hinge shaft, the first connection portion 211 and the second connection portion 213 are hinged at the hinge portion 212, and in the first position, the sleeve 214 is sleeved on the hinge portion 212 to prevent the first connection portion 211 and the second connection portion 213 at two ends of the hinge portion 212 from rotating. In the second position, the first connecting portion 211 and the second connecting portion 213 on both sides of the hinge portion 212 are vertically disposed and abut against each other, and the end surface of the first connecting portion 211 abuts against the outer circular surface of the second connecting portion, so that the two portions cannot rotate continuously. It should be noted that the connecting member 210 near the wrench head 100 is fixedly connected to the wrench head body 110. Specifically, the first connection portion 211 of the connection member 210 is fixedly connected to the wrench head main body 110.

In a further embodiment, an elastic ring 215 adapted to the sleeve 214 is disposed at an end of the first connecting portion 211 away from the hinge portion 212, and an inner wall of the sleeve 214 abuts against the elastic ring 215, so as to prevent the sleeve 214 from slipping off when the sleeve is sleeved on the engaging portion. The end of the second connecting part 213 far from the hinge part 212 is provided with a boss 213b abutting against the sleeve 214, the outer diameter of the boss 213b is larger than the inner diameter of the sleeve 214, and the boss 213b can prevent the sleeve 214 from sliding between different connecting pieces 210.

The working process is as follows: firstly, what type of nut or bolt needs to be processed is confirmed, the corresponding nut sleeve 120 is selected and installed in the fixing hole 111, the magnetic pole piece 132 is rotated, and the nut sleeve 120 is magnetically locked in the fixing hole 111. Next, the connectors 210 are connected according to a required length, and the plug connectors 213a of two adjacent connectors 210 are inserted into the plug holes 211a and locked by the coming-off preventing unit 220. Then, the hinge portion 212 of each link 210 is controlled to be in the first position or the second position while being restrained by the sleeve 214, thereby accommodating a complicated operation space.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the present invention.

Claims

1. An extension wrench, comprising: the wrench comprises a wrench head and a wrench handle connected with the wrench head;

2. The extension wrench as claimed in claim 1, wherein a fixing hole is formed in the middle of the wrench head body, the fixing hole has a polygonal cross section, the nut sleeve has a polygonal outer cross section corresponding to the fixing hole, the nut sleeve is embedded in the fixing hole, and the nut sleeve has a regular hexagon inner cross section corresponding to a nut or a bolt.

3. The extension wrench as claimed in claim 2, wherein the nut fixing unit includes a flux sleeve embedded in the wrench head main body and a magnetic pole piece disposed in the flux sleeve, the flux sleeve is disposed intermittently and is disposed adjacent to the fixing hole, and the magnetic pole piece is rotatably connected to the flux sleeve for changing a magnetic pole direction by rotating the magnetic pole piece to open and close the attraction of the nut sleeve.

4. The extension wrench of claim 3, wherein the flux sleeve includes a non-ferromagnetic divider plate disposed opposite the nut sleeve, the divider plate dividing the flux sleeve into two portions.

5. The lengthened wrench as claimed in claim 1 or 4, wherein an insertion hole is formed at one end of the first connecting portion away from the hinge portion, an insertion head matched with the insertion hole is formed at one end of the second connecting portion away from the hinge portion, and the insertion heads of two adjacent connecting members are inserted into the insertion hole.

6. The lengthened wrench as claimed in claim 5, wherein the cross section of the inner hole of the insertion hole is polygonal, the cross section of the plug is polygonal and is matched with the insertion hole, and an anti-falling unit for locking connection is arranged between the plug and the insertion hole.

7. The lengthened wrench as claimed in claim 6, wherein the anti-drop unit comprises a counter bore arranged in the plug, a telescopic column arranged in the counter bore, and an elastic member, the counter bore is arranged perpendicular to the surface of the plug, and the elastic member connects the inner wall of the counter bore and the telescopic column; the first connecting portion is provided with a through hole communicated with the inserting hole, and the telescopic column protruding out of the inserting head is clamped with the through hole.

8. The lengthened wrench as claimed in claim 7, wherein the through hole is perpendicular to the wall of the insertion hole, and a through hole is formed in each wall of the polygonal insertion hole.

9. An elongate wrench as claimed in claim 1 or claim 8, wherein said connecting member is provided with a sleeve which is arranged to fit over said hinged portions in a parallel position to prevent relative rotation of said portions; in the vertical position, the first connecting part and the second connecting part are vertically arranged and mutually abutted.

10. The extension wrench of claim 9, wherein the first connecting portion is provided with an elastic ring fitted to the sleeve at an end thereof remote from the hinged portion, and the second connecting portion is provided with a boss abutting against the sleeve at an end thereof remote from the hinged portion.