CN112476305A

CN112476305A - Universal wrench

Info

Publication number: CN112476305A
Application number: CN202011351791.4A
Authority: CN
Inventors: 邬传政; 陈海登; 陶祥海; 庞圣养; 谢如琨; 李东泽; 吴飞
Original assignee: Zhanjiang Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Zhanjiang Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-03-12

Abstract

The invention relates to the technical field of wrenches, and discloses a universal wrench which comprises a handle, a sleeve, a mandrel and a plurality of clamping blocks, wherein the handle is connected with one end of the sleeve, the sleeve comprises an inner cylinder and an outer cylinder, the outer cylinder is sleeved outside the inner cylinder and can move along the axial direction of the inner cylinder, the mandrel is positioned in the inner cylinder, the mandrel is connected with the inner cylinder and is arranged along the axis of the inner cylinder, the clamping blocks are uniformly arranged in the circumferential direction by taking the mandrel as the center, each clamping block is connected with the mandrel through a telescopic mechanism, the clamping blocks and the outer cylinder are respectively arranged close to two ends of the inner cylinder, a first inclined plane is arranged on the outer side of each clamping block, the first inclined plane extends outwards in an inclined manner from one end close to the outer cylinder to one end far away from the outer cylinder, a second inclined plane is arranged on the inner wall of the end part of the outer cylinder close to the clamping blocks, and the inclination direction and, the bolt is suitable for bolts of different models, and has wide application range and convenient use.

Description

Universal wrench

Technical Field

The invention relates to the technical field of wrenches, in particular to a universal wrench.

Background

The socket spanner is composed of a plurality of sockets with hexagonal holes or dodecagonal holes, and a plurality of accessories such as handles, connecting rods and the like, and is particularly suitable for screwing bolts or nuts with very narrow or deep recesses. The existing common socket wrench has the advantages of simple structure, capability of bearing larger torque, no slipping, small damage to the screw, explosion prevention and the like, but the diameter of the socket wrench cannot be changed, and each socket wrench corresponds to a diameter screw, so that a plurality of socket wrenches are often required to be equipped, and the carrying is inconvenient.

Chinese utility model CN208648612U (published as 2019, 03, 26) discloses a jack rotation wrench, including wrench body, rotatable setting be used for rotating the rotation sleeve of the screw rod of jack at wrench body's tip and rotatable setting at the twist grip of the other end of wrench body, wrench body's tip still is provided with and is used for the fixed couple to the jack side with wrench body, and twist grip is close to twist grip's tip and still is provided with the fixed inserted sheet that is used for fixing wrench body to the side of jack with fixed couple cooperation. The rotating sleeve of this patent is provided with the interior hexagonal hole that is used for rotating the screw rod of jack, can only dismantle a bolt, nut etc. that match rather than interior hexagonal hole, and the threaded fastener of multiple size of unable adaptation needs to carry a plurality of spanners, and is inconvenient to use.

Disclosure of Invention

The invention aims to provide a universal wrench which is wide in application range and convenient to use.

In order to achieve the above object, the present invention provides a wrench, comprising a handle, a socket, a spindle, and a plurality of clamping blocks, the handle is connected with one end of the sleeve, the sleeve comprises an inner cylinder and an outer cylinder, the outer cylinder is sleeved outside the inner cylinder and can move along the axial direction of the inner cylinder, the mandrel is positioned in the inner cylinder, the mandrel is connected with the inner cylinder and is arranged along the axis of the inner cylinder, a plurality of clamping blocks are uniformly arranged in the circumferential direction by taking the mandrel as the center, each clamping block is connected with the mandrel through a telescopic mechanism, the clamping block and the outer cylinder are respectively arranged close to two ends of the inner cylinder, a first inclined plane is arranged on the outer side of the clamping block, the first inclined plane extends outwards from one end close to the outer cylinder to one end far away from the outer cylinder in an inclined mode, the inner wall of the outer barrel, which is close to the end part of the clamping block, is provided with a second inclined plane, and the inclined direction and the inclined angle of the second inclined plane are the same as those of the first inclined plane.

Preferably, the telescopic mechanism comprises a spring, the spring is located between the clamping block and the mandrel, and two ends of the spring are respectively connected with the clamping block and the mandrel.

Preferably, the outer wall of the end of the inner cylinder is provided with an external thread, the inner wall of the outer cylinder is provided with an internal thread, and the outer cylinder and the inner cylinder are in threaded connection through the external thread and the internal thread.

Preferably, the second inclined surface is formed by gradually increasing the inner diameter of the outer cylinder toward the direction in which the clamping block approaches, and the first inclined surface is an arc-shaped structure attached to the second inclined surface.

Preferably, the inner cylinder is a cylinder with an opening at one end and a closed end, the outer cylinder is a cylinder with openings at two ends, the handle is connected to the closed end of the inner cylinder, and one end of the mandrel is connected to the inner wall of the closed end of the inner cylinder.

As a preferred scheme, the end of the inner cylinder is provided with accommodating notches the number of which is equal to that of the clamping blocks, the clamping blocks are positioned in the accommodating notches, guide blocks are arranged on two sides of each accommodating notch, guide grooves are formed in two opposite side surfaces of each clamping block, and the guide blocks are slidably embedded in the guide grooves.

Preferably, the cross section of the mandrel is a regular polygon, and the number of sides is equal to the number of the clamping blocks.

Preferably, the handle is rotatably connected to the sleeve, and the rotation axis of the handle is perpendicular to the axis of the sleeve.

Preferably, the handle is a telescopic rod body.

According to the preferable scheme, the handle comprises an outer rod and an inner rod, the outer rod is a hollow rod body with one closed end and one open end, the closed end of the outer rod is connected with the sleeve, the inner rod penetrates through the outer rod, sliding shafts vertically connected with the inner rod are arranged on two opposite sides of the inner rod respectively, two oppositely-arranged sliding grooves are formed in the inner wall of the outer rod, the sliding shafts are inserted into the sliding grooves and can slide along the sliding grooves, a steering notch is formed in the rod wall of one open end of the outer rod, and the steering notch is located between the two sliding grooves.

Compared with the prior art, the invention has the beneficial effects that:

the clamping blocks arranged in the circumferential direction are connected with the mandrel in the inner barrel through the telescopic mechanism, the movable outer barrel is sleeved outside the inner barrel, the outer barrel is provided with a second inclined surface with the inclination direction and the angle the same as those of the first inclined surface of the clamping blocks, when the outer barrel moves along the inner barrel to be close to the clamping blocks, the second inclined surface is abutted against the first inclined surface to press the clamping blocks to the mandrel, so that the shape surrounded by the clamping blocks is reduced, the inner diameter of the sleeve can be changed, the clamping device is suitable for bolts of different types, and the clamping device is wide in application range, convenient to use and universal.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of an universal wrench.

FIG. 2 is a schematic structural diagram of a wrench with a detachable outer barrel according to an embodiment of the present invention.

FIG. 3 is a longitudinal sectional view of the outer cylinder according to the embodiment of the present invention.

FIG. 4 is a schematic view of a clamp block and mandrel connection according to an embodiment of the present invention.

FIG. 5 is a schematic view of the connection between the clamp blocks and the inner barrel according to the embodiment of the present invention.

In the drawings, 1-handle; 101-outer pole; 1011-chute; 1012-turning notch; 102-an inner rod; 2-a sleeve; 201-inner cylinder; 2011-accommodating notch; 202-outer cylinder; 2021-a second slope; 3-a mandrel; 4-clamping the block; 401-a first bevel; 402-a guide groove; 5-a spring; 6-a guide block; 7-sliding shaft.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Referring to fig. 1 to 4, an universal wrench according to a preferred embodiment of the present invention includes a handle 1, a sleeve 2, a mandrel 3 and a plurality of clamping blocks 4, wherein the handle 1 is connected to one end of the sleeve 2, the sleeve 2 includes an inner cylinder 201 and an outer cylinder 202, the outer cylinder 202 is sleeved outside the inner cylinder 201 and can move along an axial direction of the inner cylinder 201, the mandrel 3 is located in the inner cylinder 201, dabber 3 is connected with inner tube 201 and sets up along the axis of inner tube 201, a plurality of clamp splice 4 use dabber 3 evenly to set up as central circumference, each clamp splice 4 passes through telescopic machanism and is connected with dabber 3, clamp splice 4 and urceolus 202 are close to the both ends setting of inner tube 201 respectively, the outside of clamp splice 4 is equipped with first inclined plane 401, first inclined plane 401 outwards extends to the one end slope of keeping away from urceolus 202 from the one end that is close to urceolus 202, the inner wall that urceolus 202 is close to the tip of clamp splice 4 is equipped with second inclined plane 2021, the incline direction and the inclination of second inclined plane 2021 are the same with first inclined plane 401. In the embodiment, the plurality of circumferentially arranged clamping blocks 4 are connected with the mandrel 3 in the inner cylinder 201 through the telescopic mechanism, the movable outer cylinder 202 is sleeved outside the inner cylinder 201, the outer cylinder 202 is provided with the second inclined surface 2021 with the inclination direction and the angle the same as those of the first inclined surface 401 of the clamping blocks 4, when the outer cylinder 202 moves along the inner cylinder 201 to be close to the clamping blocks 4, the second inclined surface 2021 is abutted against the first inclined surface 401 to press the clamping blocks 4 to the mandrel 3, so that the shape surrounded by the plurality of clamping blocks 4 is reduced, the inner diameter of the sleeve 2 can be changed, the clamp device is suitable for bolts of different types, and the clamp device is wide in application range, convenient to use and universal.

Further, please refer to fig. 4, the telescopic mechanism of this embodiment includes a spring 5, the spring 5 is located between the clamping block 4 and the mandrel 3, and two ends of the spring 5 are respectively connected to the clamping block 4 and the mandrel 3, the spring 5 is telescopic, when the outer cylinder 202 moves towards the direction close to the clamping block 4, the spring 5 is compressed, the clamping block 4 contracts inwards to adapt to the bolt with the smaller model, when the outer cylinder 202 moves towards the direction far away from the clamping block 4, the spring 5 recovers to drive the clamping block to move outwards to adapt to the bolt with the larger model, when adjusting, only the outer cylinder 202 needs to be moved, and the operation is convenient.

The outer wall of the tip of inner tube 201 of this embodiment is equipped with the external screw thread, and the inner wall of urceolus 202 is equipped with the internal thread, and urceolus 202 and inner tube 201 pass through external screw thread and internal thread threaded connection, and the accessible is rotatory to be realized urceolus 202 axial displacement on urceolus 201, and urceolus 202 can be fastening connection all the time on inner tube 201, avoids dropping, plays the limiting displacement to clamp splice 4.

Further, the second inclined surface 2021 of the present embodiment is formed by gradually increasing the inner diameter of the outer cylinder 202 toward the direction in which the clamping block 4 approaches, the first inclined surface 401 is an arc structure that is attached to the second inclined surface 2021, so that the end of the outer cylinder 202 that is close to the clamping block 4 is in a horn shape, the outer side surface of the end of the clamping block 4 where the first inclined surface 401 is disposed surrounds the horn shape, which can prevent the outer cylinder 202 from being provided with a plurality of inclined planes that are attached to the first inclined surface 401 of the clamping block 4, and the outer cylinder 202 moves by rotating, and the contact surface between the second inclined surface 2021 and the first inclined surface 401 is small, which results in irregular shape surrounded by the clamping block 4. In this embodiment, the first inclined surface 401 and the second inclined surface 2021 are configured to be arc-shaped, so that the second inclined surface 2021 can be attached to the first inclined surface 401 when the outer cylinder 202 rotates.

Optionally, the inner cylinder 201 is a cylinder with an open end and a closed end, the outer cylinder 202 is a cylinder with an open end and a closed end, the handle 1 is connected to the closed end of the inner cylinder 201, and one end of the mandrel 3 is connected to the inner wall of the closed end of the inner cylinder 201, so that the length of the sleeve 2 can be smaller, and the movement of the outer cylinder 202 is facilitated.

Further, referring to fig. 5, the end of the inner cylinder 201 is provided with receiving notches 2011 having the same number as the clamping blocks 4, the clamping blocks 4 are located in the receiving notches 2011, the two sides of the receiving notches 2011 are provided with the guide blocks 6, the two opposite side surfaces of the clamping blocks 6 are provided with the guide grooves 402, the guide blocks 6 are slidably embedded in the guide grooves 402, so as to guide the movement of the clamping blocks 4 during the contraction and extension, and improve the connection stability of the clamping blocks 4. In addition, the section of the mandrel 3 of the embodiment is a regular polygon, the number of sides is equal to the number of the clamping blocks 4, the surface of the mandrel 3 opposite to the clamping blocks 4 is a plane, and the connection of the telescopic mechanism is convenient. The clamping blocks 4 of this embodiment are provided in six, the cross-section of the mandrel 3 is provided in a regular hexagon, and hexagonal bolt heads are used, it being noted that the clamping blocks 4 may also be provided in five or other numbers.

In addition, the handle 1 and the sleeve 2 of this embodiment are rotatably connected, and the axis of rotation of the handle 1 is perpendicular to the axis of the sleeve 2, so that the multi-directional multi-plane working can be realized, and the multi-directional multi-plane working device is suitable for different working spaces. Optionally, the handle 1 is a telescopic rod body, so that the handle 1 is telescopic, and is convenient to carry and use. Further, the handle 1 includes an outer rod 101 and an inner rod 102, the outer rod 101 is a hollow rod body with one end closed and one end open, the closed end of the outer rod 101 is connected with the sleeve 2, the inner rod 102 is arranged in the outer rod 101 in a penetrating manner, two opposite sides of the inner rod 102 are respectively provided with a sliding shaft 7 vertically connected with the inner rod, the inner wall of the outer rod 101 is provided with two sliding chutes 1011 arranged oppositely, the sliding shaft 7 is inserted into the sliding chutes 1011 and can slide along the sliding chutes 1011, the rod wall of the open end of the outer rod 101 is provided with a turning notch 1012, the turning notch 1012 is located between the two sliding chutes 1011, the sliding shaft 7 can guide the movement of the inner rod 102 when extending and retracting, and when the inner rod 102 moves to the open end of the outer rod 101, the inner rod 102 can rotate around the sliding shaft 7, so that the inner rod 102 can be perpendicular.

To sum up, the embodiment of the present invention provides an universal wrench, wherein a plurality of circumferentially arranged clamping blocks 4 are connected to a mandrel 3 in an inner cylinder 201 through a telescopic mechanism, a movable outer cylinder 202 is sleeved outside the inner cylinder 201, the outer cylinder 202 is provided with a second inclined surface 2021 having the same inclination direction and angle as the first inclined surface 401 of the clamping block 4, when the outer cylinder 202 moves along the inner cylinder 201 to approach the clamping block 4, the second inclined surface 2021 abuts against the first inclined surface 401 to press the clamping block 4 toward the mandrel 3, so that the shape enclosed by the plurality of clamping blocks 4 is reduced, the inner diameter of the sleeve 2 can be changed, and the universal wrench is suitable for bolts of different types, and has the advantages of wide application range, convenience in use and universality.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. The universal wrench is characterized by comprising a handle (1), a sleeve (2), a mandrel (3) and a plurality of clamping blocks (4), wherein the handle (1) is connected to one end of the sleeve (2), the sleeve (2) comprises an inner cylinder (201) and an outer cylinder (202), the outer cylinder (202) is sleeved outside the inner cylinder (201) and can move axially along the inner cylinder (201), the mandrel (3) is located in the inner cylinder (201), the mandrel (3) is connected with the inner cylinder (201) and arranged along the axis of the inner cylinder (201), the clamping blocks (4) are uniformly arranged by taking the mandrel (3) as the central circumferential direction, each clamping block (4) is connected with the mandrel (3) through a telescopic mechanism, the clamping blocks (4) and the outer cylinder (202) are respectively arranged close to two ends of the inner cylinder (201), and first inclined planes (401) are arranged on the outer sides of the clamping blocks (4), the first inclined plane (401) extends outwards from one end close to the outer barrel (202) to one end far away from the outer barrel (202) in an inclined mode, a second inclined plane (2021) is arranged on the inner wall of the end portion, close to the clamping block (4), of the outer barrel (202), and the inclined direction and the inclined angle of the second inclined plane (2021) are the same as those of the first inclined plane (401).

2. Universal wrench according to claim 1, characterised in that the telescopic mechanism comprises a spring (5), said spring (5) is located between said clamping block (4) and said spindle (3), and both ends of the spring (5) are connected to said clamping block (4) and said spindle (3), respectively.

3. The universal wrench as claimed in claim 1, wherein the outer wall of the end portion of the inner cylinder (201) is provided with an external thread, the inner wall of the outer cylinder (202) is provided with an internal thread, and the outer cylinder (202) and the inner cylinder (201) are threadedly connected through the external thread and the internal thread.

4. The universal wrench as claimed in claim 1 or 3, wherein the second slope (2021) is formed by the inner diameter of the outer cylinder (202) gradually increasing toward the direction of the clamp block (4), and the first slope (401) is an arc-shaped structure which is in fit with the second slope (2021).

5. The universal wrench as claimed in claim 1, wherein the inner cylinder (201) is an open-ended and closed-ended cylinder, the outer cylinder (202) is an open-ended cylinder, the handle (1) is connected to the closed end of the inner cylinder (201), and one end of the spindle (3) is connected to the inner wall of the closed end of the inner cylinder (201).

6. The universal wrench according to claim 1, wherein the end of the inner cylinder (201) is provided with receiving notches (2011) with the number equal to that of the clamping blocks (4), the clamping blocks (4) are located in the receiving notches (2011), guide blocks (6) are arranged on two sides of the receiving notches (2011), guide grooves (402) are arranged on two opposite side surfaces of the clamping blocks (4), and the guide blocks (6) are slidably inserted into the guide grooves (402).

7. Universal wrench according to claim 1, characterised in that the mandrel (3) has a cross-section in the shape of a regular polygon and the number of sides is equal to the number of clamping blocks (4).

8. Universal wrench according to claim 1, characterised in that the handle (1) is rotatably connected to the socket (2) and that the axis of rotation of the handle (1) is perpendicular to the axis of the socket (2).

9. Universal wrench according to claim 1, characterised in that the handle (1) is a telescopic rod.

10. The universal wrench according to claim 9, wherein the handle (1) comprises an outer rod (101) and an inner rod (102), the outer rod (101) is a hollow rod body with a closed end and an open end, the closed end of the outer rod (101) is connected with the sleeve (2), the inner rod (102) is arranged in the outer rod (101) in a penetrating manner, two opposite sides of the inner rod (102) are respectively provided with a sliding shaft (7) vertically connected with the inner rod, the inner wall of the outer rod (101) is provided with two sliding chutes (1011) which are arranged oppositely, the sliding shaft (7) is inserted into the sliding chutes (1011) and can slide along the sliding chutes (1011), the rod wall of the open end of the outer rod (101) is provided with a steering notch (1012), and the steering notch (1012) is located between the two sliding chutes (1011).