阅读说明：本技术 一种呆头式活动扳手 (solid head type adjustable wrench ) 是由 贺敏超 班兰美 赵新业 罗广权 农田友 邓歧杏 黄淑芳 陈炳森 陈伟珍 梁建和 于 2019-11-19 设计创作，主要内容包括：本发明一种呆头式活动扳手,集成了呆头扳手和活动扳手的功能；本发明呆头式活动扳手相比于呆头扳手,在工作过程中,其将螺母螺栓旋转一个角度后无需将扳手分离于螺母螺栓头,直接退回一定角度后即可继续扭转,节省了将扳手分离于螺母螺栓头后再退回一定角度再将扳手开口卡进螺母螺栓头这三个环节所耗费的时间；本发明呆头式活动扳手相比于活动扳手,其扳手的工作过程的开合动作是自动完成,无需人工调整,方便快捷。(The solid-headed adjustable spanner integrates the functions of a solid-headed spanner and an adjustable spanner, and compared with the solid-headed spanner, the solid-headed adjustable spanner can rotate a nut bolt by angles without separating the spanner from the nut bolt head in the working process, can continue to twist after directly returning to fixed angles, saves the time consumed in three links of returning to fixed angles after separating the spanner from the nut bolt head and then clamping the spanner opening into the nut bolt head, and compared with the adjustable spanner, the opening and closing action of the spanner in the working process is automatically completed, manual adjustment is not needed, and the solid-headed adjustable spanner is convenient and fast.)

1, kinds of dead-end adjustable wrench, which is characterized in that it comprises fixed wrench head and adjustable wrench head;

the fixed wrench head and the handle are molded, a groove is arranged on the side of the head of the fixed wrench head, and the movable wrench head comprises a locking movable head and an unlocking movable head which are respectively connected with the fixed wrench head through a cylindrical pin to form a wrench main body, the back of the unlocking movable head is in arc surface contact with the inner side of the locking movable head, the cylindrical pin is in clearance fit with the locking movable head and the unlocking movable head, and the cylindrical pin is in interference fit with the fixed wrench head;

the end of the L-shaped locking block, which is far away from the handle, is connected with the unlocking movable head through a bayonet arc, and the end of the L-shaped locking block, which is close to the handle, is connected with the locking movable head;

the movable unlocking head is pushed by the sharp corner of the nut and bolt head to rotate, and the other end of the movable unlocking head drives the L-shaped locking block to move to unlock the movable locking head.

2. The dead-end adjustable wrench as claimed in claim 1, wherein the fixed wrench head defines a th recess for receiving a locking movable head.

3. dead-end monkey wrench as claimed in claim 1, wherein the fixed wrench head is provided with a second recess for receiving an unlocking monkey head.

4. The dead-end adjustable wrench as claimed in claim 1, wherein the fixed wrench head defines a third recess for receiving an L-shaped locking bar.

5. dead-end adjustable wrench as claimed in claim 1, wherein the fixed wrench head defines a fourth recess for receiving a spring plate.

6. dead-head spanner as claimed in claim 1, wherein the locking spanner has a th through hole for installing a cylindrical pin.

7. dead-head spanner wrench as claimed in claim 1, wherein said unlocking head is provided with a second through hole for fitting a cylindrical pin.

8. dead-head spanner as claimed in claim 1, wherein said spring plate is provided with a blind hole for mounting a countersunk screw.

Technical Field

The invention relates to the technical field of mounting and dismounting tools, in particular to dead-end adjustable wrenches.

Background

A wrench is a hand tool that utilizes the principle of leverage to turn bolts, screws, nuts, and other threaded fasteners that hold open or trepanned bolts or nuts.

the existing spanner mainly has the following two disadvantages that is the traditional adjustable spanner which comprises a handle part and a spanner head part, wherein, fixed jaw is arranged at the side of the spanner head part , movable clamping block is arranged at the side of opposite to the fixed jaw, the movable clamping block is connected with a worm, when the size of the opening of the spanner head part needs to be adjusted, the movable clamping block is moved left and right by rotating the worm with hand so as to adjust the size of the opening, and often, the spanner is not smoothly sleeved due to inaccurate adjusting angle and has clamping stagnation phenomenon, so the adjusting speed is slow, after the operation is finished, the spanner needs to be withdrawn from the bolt, the spanner is sleeved on the bolt after the rotation is performed for a fixed angle, the operation efficiency is low, the operation is inconvenient, secondly, the traditional open-head spanner is in itself dead head, after the operation is performed for a fixed angle of , the spanner needs to be taken out from the spanner for a fixed angle of the rotation , then the spanner is clamped into the bolt head of the nut, the rotation for a fixed angle, the rotation.

Disclosure of Invention

In view of the shortcomings of the prior art, the invention aims to provide dead-end adjustable spanners of types, which can continuously tighten or loosen nuts, and have short time consumption and high working efficiency.

In order to achieve the purpose, the invention adopts the technical scheme that kinds of dead-end adjustable wrenches comprise a fixed wrench head and an adjustable wrench head;

the fixed wrench head and the handle are molded, a groove is arranged on the side of the head of the fixed wrench head, and the movable wrench head comprises a locking movable head and an unlocking movable head which are respectively connected with the fixed wrench head through a cylindrical pin to form a wrench main body, the back of the unlocking movable head is in arc surface contact with the inner side of the locking movable head, the cylindrical pin is in clearance fit with the locking movable head and the unlocking movable head, and the cylindrical pin is in interference fit with the fixed wrench head;

the end of the L-shaped locking block, which is far away from the handle, is connected with the unlocking movable head through a bayonet arc, and the end of the L-shaped locking block, which is close to the handle, is connected with the locking movable head;

the movable unlocking head is pushed by the sharp corner of the nut and bolt head to rotate, and the other end of the movable unlocking head drives the L-shaped locking block to move to unlock the movable locking head.

, the fixed spanner head is provided with a groove for placing the locking movable head.

, a second groove for placing the unlocking movable head is opened on the fixed wrench head.

, a third groove for placing the L-shaped locking block is formed on the fixed spanner head.

, the fixed spanner head is provided with a fourth groove for placing the spring plate.

, a th through hole for installing a cylindrical pin is arranged on the locking movable head.

, a second through hole for installing a cylindrical pin is arranged on the unlocking movable head.

, a blind hole is formed on the spring plate for installing a countersunk head screw.

The solid-headed adjustable spanner integrates the functions of a solid-headed spanner and an adjustable spanner, and compared with the solid-headed spanner, the solid-headed adjustable spanner can rotate a nut bolt by angles without separating the spanner from the nut bolt head in the working process, can continue to twist after directly returning to fixed angles, saves the time consumed in three links of returning to fixed angles after separating the spanner from the nut bolt head and then clamping the spanner opening into the nut bolt head, and compared with the adjustable spanner, the opening and closing action of the spanner in the working process is automatically completed, manual adjustment is not needed, and the solid-headed adjustable spanner is convenient and fast.

Drawings

FIG. 1 is a schematic diagram of the structure of the apparatus of the present invention;

FIG. 2 is a schematic view of the fixed wrench head according to the present invention;

FIG. 3 is a schematic structural view of a locking moving head of the present invention;

FIG. 4 is a schematic structural diagram of an unlocking movable head of the present invention;

FIG. 5 is a schematic structural view of the L-shaped locking block of the present invention;

FIG. 6 is a schematic view of the spring plate of the present invention;

fig. 7 is a schematic structural view of the countersunk-head screw of the present invention.

Detailed Description

The following examples may help one skilled in the art to more fully understand the present invention, but are not intended to limit the invention in any way.