CN211709146U

CN211709146U - Spanner capable of quickly adjusting size of clamping opening

Info

Publication number: CN211709146U
Application number: CN201922063710.XU
Authority: CN
Inventors: 陈华; 王丹浓; 陈熠超; 周伟程; 全晴儿
Original assignee: Ningbo Second Technician College
Current assignee: Ningbo Second Technician College
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-10-20
Anticipated expiration: 2029-11-26

Abstract

A spanner for quickly adjusting the size of a clamping opening comprises a spanner main body and a movable clamping piece, wherein the main body is provided with a fixed clamping end, the size of the clamping opening between the movable clamping piece and the fixed clamping end can be adjusted when the movable clamping piece moves left and right, a row of teeth are arranged at the bottom of the movable clamping piece, a sliding groove is formed in the main body, a locking bar is embedded in the sliding groove, a row of locking teeth capable of being meshed with the teeth are arranged on the locking bar, and an elastic element for applying upward restoring force to the locking bar is arranged at the bottom of the locking bar; a pull ring is arranged below the lock bar, and the lock teeth on the lock bar can be separated from the teeth by pressing the pull ring downwards. The utility model discloses a dislocation tooth of locking bar and the tooth meshing of activity holder lock the activity holder, when adjusting the centre gripping mouth, press the pull ring and just can easily promote the activity holder and adjust, adjust and loosen the pull ring completely and can lock, have simple structure, convenient operation's advantage.

Description

Spanner capable of quickly adjusting size of clamping opening

Technical Field

The utility model relates to a laborsaving instrument for rotating nut, specific ability quick adjustment centre gripping mouth size's spanner that says so.

Background

The adjustable wrench is called as an adjustable wrench for short, the opening width of the adjustable wrench can be adjusted within a certain range, the adjustable wrench is a tool for fastening and loosening nuts and bolts with different specifications, and is invented in 1892 by Johnson in Sweden. The adjustable spanner on the market at present realizes the regulation to the centre gripping mouth through the rotation of screw rod basically, and the screw rod needs very big power of spending when rotating, and in order to improve the self-locking power of centre gripping mouth, the angle of screw tooth is very little, and the speed of centre gripping mouth regulation is very slow.

The chinese patent office discloses in 2006, 10, 25.a fast adjustable spanner, which has a fixed tooth integrated with a spanner body, and a movable tooth with a rack at the lower part, wherein the rack at the lower part of the movable tooth penetrates into a movable tooth slot of the spanner, the rack can slide in the movable tooth slot to adjust the opening size between the movable tooth and the fixed tooth, a slider slot is arranged at the bottom of the movable tooth slot, a spring is arranged at the bottom of the slider slot, a slider is arranged at the upper part of the spring, and the rack is integrated with the slider at the upper part of the slider. When the structure releases the locking of the sliding block on the adjusting movable teeth, the sliding block can only be pressed on one side and is easy to block, and the actual using effect is poor.

Disclosure of Invention

An object of the utility model is to the defect and not enough of above-mentioned prior art, provide a simple structure, convenient to use's quick adjustment centre gripping mouth size's spanner for people.

In order to realize the purpose, the utility model adopts the technical proposal that: the wrench capable of quickly adjusting the size of the clamping opening comprises a wrench main body and a movable clamping piece, wherein the main body is provided with a fixed clamping end, when the movable clamping piece moves left and right, the size of the clamping opening between the movable clamping piece and the fixed clamping end can be adjusted, a row of teeth are arranged at the bottom of the movable clamping piece, a sliding groove is formed in the main body, a locking bar is embedded in the sliding groove, a row of locking teeth capable of being meshed with the teeth are arranged on the locking bar, and an elastic element capable of applying upward restoring force to the locking bar is arranged at the bottom of the locking bar; the lock is characterized in that a pull ring is arranged below the lock bar, a through hole opposite to the pull ring is formed in the main body, the bottom of the pull ring is exposed below the through hole, and the lock teeth on the lock bar can be separated from the teeth by pressing the pull ring downwards.

The through hole is larger than a finger, and the finger can extend into the through hole to press the pull ring.

The lock bar is provided with two parallel lock teeth, and the two locked lock teeth are staggered to form staggered teeth.

The cross-section of tooth and lock tooth be right triangle, hypotenuse atress when the activity holder is close to fixed holder, right-angle side atress when the activity holder will leave fixed holder.

The elastic element is a spring arranged at the bottom of the left side and the right side of the locking bar.

The utility model discloses a dislocation tooth of locking bar and the tooth meshing of activity holder lock the activity holder, when adjusting the centre gripping mouth, press the pull ring and just can easily promote the activity holder and adjust, adjust and loosen the pull ring completely and can lock. If the size of the clamping opening is required to be reduced, the movable clamping piece and the fixed clamping end are respectively pressed by two fingers to be relatively pinched, and after downward component force is applied to the clamping opening by the inclined surfaces of the tooth and the locking tooth to overcome the restoring force of the spring, the movable clamping piece and the fixed clamping end are abutted to reduce the clamping opening. The utility model has the advantages of simple structure and convenient operation.

Drawings

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

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a partial cross-sectional view of the present invention.

Detailed Description

As shown in fig. 1, the utility model relates to a spanner of quick adjustment grip opening size, it includes the main part 3 and the activity holder 1 of spanner, and main part 3 has fixed exposed core 3.1, when removing about activity holder 1, can adjust and the size of the exposed core 2 between the fixed exposed core 3.1.

As shown in fig. 2 and 3, a row of teeth 1.1 is arranged at the bottom of the movable clamping piece 1, a sliding groove 3.2 is arranged in the main body 3, a locking bar 4 is embedded in the sliding groove 3.2, a row of locking teeth 4.2 capable of being meshed with the teeth 1.1 are arranged on the locking bar 4, and an elastic element for applying upward restoring force to the locking bar 4 is arranged at the bottom of the locking bar 4. The elastic element is a spring 5 arranged at the bottom of the left side and the right side of the locking bar 4. The lock strip 4 be provided with two side by side, two lock tooth 4.2 dislocation formation dislocation tooth that parallel, dislocation tooth can improve the density of lock tooth 4.2 to improve the regulation precision of centre gripping mouth 2. A pull ring 4.1 is arranged below the lock bar 4, a through hole 3.3 opposite to the pull ring 4.1 is formed in the main body 3, the bottom of the pull ring 4.1 is exposed below the through hole 3.3, and the lock teeth 4.2 on the lock bar 4 can be separated from the teeth 1.1 by pressing the pull ring 4.1 downwards. The through hole 3.3 is larger than a finger, the finger can extend into the through hole 3.3 to press the pull ring 4.1, and the operation is very convenient.

The cross-section of tooth 1.1 and lock tooth 4.2 be right triangle, hypotenuse atress when activity holder 1 is close to fixed holder 3.1, right-angle side atress when activity holder 1 will leave fixed holder 3.1. When the bevel edge is stressed, a downward component force is generated when the movable clamping piece 1 is pushed, and the clamping opening 2 can be reduced after the restoring force of the spring 5 is overcome. When the right-angle side is stressed, downward component force cannot be generated, the clamping opening 2 is locked, and the clamping opening cannot be expanded by larger force.

The utility model discloses a dislocation tooth of locking strip 4 and the tooth 1.1 meshing of activity holder 1 lock activity holder 1, when will adjusting centre gripping mouth 2, press pull ring 4.1 and just can easily promote activity holder 1 and adjust, adjust and loosen pull ring 4.1 completely and can lock. If the size of the clamping opening 2 is required to be reduced, the movable clamping piece 1 and the fixed clamping end 3.1 are respectively pressed by two fingers to be relatively pinched, and after downward component force is applied to the clamping opening through the inclined surfaces of the teeth 1.1 and the locking teeth 4.2 to overcome the restoring force of the spring 5, the movable clamping piece 1 and the fixed clamping end 3.1 are abutted to reduce the clamping opening 2. The utility model has the advantages of simple structure and convenient operation.

Claims

1. A spanner for quickly adjusting the size of a clamping opening comprises a spanner main body and a movable clamping piece, wherein the main body is provided with a fixed clamping end, and the size of the clamping opening between the movable clamping piece and the fixed clamping end can be adjusted when the movable clamping piece moves left and right; the lock is characterized in that a pull ring is arranged below the lock bar, a through hole opposite to the pull ring is formed in the main body, the bottom of the pull ring is exposed below the through hole, and the lock teeth on the lock bar can be separated from the teeth by pressing the pull ring downwards.

2. The wrench as claimed in claim 1, wherein the through hole is larger than a finger, and the finger can be inserted into the through hole to press the pull ring.

3. The wrench as claimed in claim 1, wherein the locking bar has two parallel locking teeth, and the two locking teeth are staggered to form staggered teeth.

4. The wrench as claimed in claim 1, 2 or 3, wherein the teeth and the locking teeth have right-angled triangular cross-sections, the bevel edge of the movable clamping member is forced when the movable clamping member approaches the fixed clamping end, and the right-angled edge of the movable clamping member is forced when the movable clamping member leaves the fixed clamping end.

5. The wrench as claimed in claim 4, wherein the resilient member is a spring mounted on the bottom of the locking bar.