CN206825303U - A kind of retractable electric spanner - Google Patents

Abstract

The utility model discloses a retractable electric wrench, which relates to the technical field of electric tools. Aiming at the technical problems that the existing wrench cannot be stretched and needs enough space to operate and cannot be operated in a long and narrow space, the utility model adopts a shell, a power component, Reduction mechanism, installation part, transmission assembly and gear sleeve, one end of the housing is connected to the retractable installation part, the power part is connected to the reduction mechanism, the power part and the reduction mechanism can be accommodated in the casing, the transmission assembly and the gear sleeve The cylinder is connected and accommodated together in the installation part, the deceleration mechanism is connected with the transmission assembly, the transmission assembly includes a telescopic transmission rod, a support frame and a transmission gear, and the transmission gear is connected with the gear sleeve. The utility model adopts a telescopic The structure can be used not only in ordinary environments, but also in narrow and long environments. It has the characteristics of convenient operation, low labor intensity, and high efficiency, and is suitable for popularization and application.

Description

A retractable electric wrench

technical field

The utility model relates to the technical field of electric tools, in particular to a retractable electric wrench.

Background technique

A wrench is a commonly used installation and disassembly tool, which is widely used in daily life, and it is usually used to tighten or loosen bolts, screws, nuts and other threaded parts. The wrench is usually formed with an opening or a sleeve hole for clamping a bolt or a nut at one or both ends of the handle. When in use, an external force is applied to the handle along the thread rotation direction to twist the bolt or nut. Commonly used wrenches include manual wrench and electric wrench. Manual wrench has the characteristics of simple operation, low price, but high labor intensity and low efficiency. Electric wrench has the advantages of convenient operation, low labor intensity and high efficiency.

Commonly used manual wrenches are divided into dull wrenches (open-end wrenches, ring wrenches, socket wrenches, etc.), ratchet wrenches, etc. During the tightening or loosening operation of open-end wrench, ring wrench, socket wrench, etc., the wrench needs to be removed from the threaded part after turning the threaded part by a small corner, and then the wrench should be placed at another angle. This process is usually repeated several times until the screw is completely tightened or loosened, so the operation is inconvenient, and the wrench is generally not suitable for use in some narrow spaces. The jaw part of the ratchet wrench is usually a closed structure. To tighten or loosen the threaded part, the ratchet wrench needs to be encased in the threaded part from the upper or lower part of the threaded part. The user must hold the wrench body and swing it back and forth to make it The ratchet ring rotates in one direction to drive the sleeve and drive the nut connected to the sleeve, which consumes a lot of time for the user, especially for the construction environment of long screw rods. The user must tighten or loosen the nut for a long time. For the narrow space , In the narrow and long construction environment, the user can only move back and forth at a small angle, which is quite time-consuming and laborious for the user.

In order to improve work efficiency and convenience of use, some electric wrenches have appeared on the market. However, the working heads of these electric wrenches are usually closed sleeve structures, and can only be used when the bolts are short and the space is sufficient. In the car maintenance or home improvement industry, there are many cases where the bolts are too long or the space is narrow. The former requires an electric wrench to be used with a long socket, and the latter requires a right-angle electric wrench to be used with a short socket, which reduces the convenience of use, and For a space or a narrow space whose height is only slightly greater than the length of the bolt, ordinary electric wrench cannot be used for operation.

Contents of the invention

The utility model provides a retractable electric wrench, which is used to solve the technical problems that the existing wrench cannot be stretched and needs enough space to operate and cannot be operated in a long and narrow space.

In order to solve the above problems, the utility model adopts the following technical solutions to realize:

A retractable electric wrench, comprising a housing, a power component, a deceleration mechanism, a mounting part, a transmission assembly and a gear sleeve, one end of the housing is connected to the telescopic mounting part, and the power component is connected to the deceleration mechanism connected, the power component and the deceleration mechanism can be accommodated in the housing;

The transmission assembly and the gear sleeve are connected and accommodated together in the installation part, and the reduction mechanism is connected with the transmission assembly;

The transmission assembly includes a telescopic transmission rod, a support frame and a transmission gear, and the transmission gear is connected with the gear sleeve.

Preferably, one end of the casing is provided with a battery cover, and the other end is connected to the installation part.

Preferably, the power component includes a motor, a battery, a switch and a motor drive circuit board, the switch is arranged on one side of the housing, the motor drive circuit board is provided with a control circuit for controlling the rotation of the motor, and the battery is Rechargeable battery, open the battery cover to take out the battery.

Preferably, the reduction mechanism is a planetary gear reduction mechanism or a bevel gear reduction mechanism.

Preferably, the installation part includes a telescopic rod, a head and a placement hole. One end of the telescopic rod is fixedly installed in the housing, and the other end is socketed with the head. Socket and placement hole.

Preferably, the telescopic rod includes a fixed rod and a moving rod sleeved in the fixed rod, one end of the fixed rod is fixedly connected to one end of the housing, the other end is slidably connected to the moving rod, and one end of the moving rod connected to the head.

Preferably, the transmission rod includes a fixed rotating rod and a moving rotating rod, the fixed rotating rod is a hollow oval structure, one end of the fixed rotating rod is fixedly connected to the output shaft of the reduction mechanism, and the other end is connected to the moving rotating rod One end is slidingly connected, the structure of the moving rotating rod matches the fixed rotating rod, the moving rotating rod can slide freely in the hollow hole of the fixed rotating rod and can transmit torque, the other end of the moving rotating rod Pass through the support frame and be fixedly connected with the transmission gear, and the transmission gear is connected with the gear sleeve.

Preferably, the outside of the gear sleeve is a gear ring meshing with the transmission gear, and the inside of the gear sleeve is a hexagonal or twelve-angle hole.

Preferably, the transmission gear is a bevel gear or a spur gear.

The utility model adopts a retractable structure, can be used not only in ordinary environments, but also in narrow and long environments, has the characteristics of convenient operation, low labor intensity, high efficiency, and is suitable for popularization and application.

Description of drawings

Fig. 1 is the overall structural representation of the embodiment provided by the utility model;

Fig. 2 is a partial sectional view of the embodiment provided by the utility model.

detailed description

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described implementation Example is a part of embodiments of the present utility model, rather than all embodiments. The detailed description of embodiments of the invention generally described and illustrated in the drawings herein is not intended to limit the scope of the invention as claimed, but merely represents selected embodiments of the invention. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Figures 1 and 2, a retractable electric wrench includes a housing 1, a power component 2, a reduction mechanism 3, a mounting part 4, a transmission component 5 and a gear sleeve 6;

The shell 1 is a hollow structure, and its interior is installed and accommodated with a power component 2. The power component 2 includes a motor 22, a battery 23, a switch 24 and a motor drive circuit board 25. The switch 24 is arranged on one side of the shell 1 for easy operation. The circuit board 25 is provided with a control circuit for controlling the rotation of the motor 22, the battery 23 is a rechargeable battery, the internal circuit of the power unit 2 is connected according to a conventional wiring method, and the battery 23 can be taken out by opening the battery cover 21;

The output shaft of the motor 22 is fixedly connected to the input shaft of the reduction mechanism 3 in the form of a planetary gear, and the output shaft of the reduction mechanism 3 is connected to the transmission rod 51 on the transmission assembly 5;

The transmission rod 51 includes a fixed rotating rod 510 and a moving rotating rod 511. The fixed rotating rod 510 is a hollow oval structure. One end of the fixed rotating rod 510 is fixedly connected to the output shaft of the reduction mechanism 3, and the other end is slidingly connected to one end of the moving rotating rod 511. The structure of the moving rotating rod 511 matches the fixed rotating rod 510. The moving rotating rod 511 can slide freely in the hollow hole of the fixed rotating rod 510 and can transmit torque. The other end of the moving rotating rod 511 is fixedly connected with the transmission gear 53. The transmission gear 53 is connected with the gear sleeve 6 that is provided with the gear sleeve 6 that matches the transmission gear 53 on the surface. In order to ensure the stability of the transmission rod 51, the mobile rotating rod 511 is also provided with a support frame 52 for supporting and fixing, and the support frame 52 can be provided with a bearing;

The outer layer of the transmission rod 51 is covered with a telescopic rod 41. The telescopic rod 41 is a hollow cuboid structure, which includes a fixed rod 410 and a moving rod 411 sleeved in the fixed rod 410. One end of the fixed rod 410 is fixedly connected to one end of the housing 1. The other end is slidingly connected with the moving rod 411, one end of the moving rod 411 is connected with the head 42, the support frame 52 is fixed inside the moving rod 411, and the head 42 is provided with a gear sleeve 6 and a placement hole 43;

The outside of the gear sleeve 6 is a gear ring, which meshes with the transmission gear 53, and the inside is a hexagonal hole or a twelve-angle hole;

The above-mentioned transmission assembly 5 , gear sleeve 6 , telescopic rod 41 , head 42 , placement hole 43 , transmission rod 51 , support frame 52 , and movable gear 53 together constitute the installation part 4 .

During use, first open the battery cover 21, put the battery 23 into the housing 1 and connect it, then turn on the switch 24 on the housing 1, the battery 23 provides power to the motor 22 through the motor drive circuit board 25 to make it rotate, The output shaft of motor 22 connects the driving gear shaft of reduction mechanism 3 and drives the driving gear shaft to rotate. The transmission gear 53 meshes with the outer ring gear of the gear sleeve 6 and transmits power to the gear sleeve 6 to realize the rotation of the gear sleeve 6 .

Claims (9)

1. a kind of retractable electric spanner, including housing（1）, power part（2）, reducing gear（3）, installation portion（4）, transmission group Part（5）And gear sleeve（6）, it is characterised in that：

The housing（1）One end and telescopic installation portion（4）Connection, the power part（2）With the reducing gear（3） Connection, the power part（2）With the reducing gear（3）Described housing can be contained in（1）In；

The transmission component（5）And gear sleeve（6）Connect and be collectively received in the installation portion（4）In, the reducing gear （3）With the transmission component（5）Connection；

The transmission component（5）Including telescopic drive link（51）, support frame（52）And travelling gear（53）, described transmission Gear（53）With gear sleeve（6）It is connected.

2. electric wrench according to claim 1, it is characterised in that：

The housing（1）One end is provided with battery cover（21）, other end connection installation portion（4）.

3. electric wrench according to claim 1, it is characterised in that：

The power part（2）Including motor（22）, battery（23）, switch（24）And motor driving circuit board（25）, it is described to open Close（24）It is arranged on the housing（1）Side, the motor driving circuit board（25）It is provided with and is used for controlled motor（22）Turn Dynamic control circuit, battery（23）For rechargeable battery, battery cover is opened（21）Can be by battery（23）Take out.

4. electric wrench according to claim 1, it is characterised in that：

The reducing gear（3）For planetary gear reducing mechanism or bevel gear reducing mechanism.

5. electric wrench according to claim 1, it is characterised in that：

The installation portion（4）Including expansion link（41）, head（42）And putting hole（43）, expansion link（41）One end is fixedly mounted on Housing（1）It is interior, the other end and head（42）Socket, expansion link（41）The hollow cuboid mutually to be socket-connected for two sections, head（42） Gear sleeve is set（6）And putting hole（43）.

6. electric wrench according to claim 5, it is characterised in that：

The expansion link（41）Including fix bar（410）Be set in fix bar（410）Interior mobile bar（411）, the fixation Bar（410）One end and the housing（1）One end is fixedly connected, the other end and the mobile bar（411）It is slidably connected, the movement Bar（411）One end and the head（42）Connection.

7. electric wrench according to claim 1, it is characterised in that：

The drive link（51）Including fixed bull stick（510）With mobile bull stick（511）, the fixed bull stick（510）To be hollow ellipse Circular configuration, fixed bull stick（510）One end and the reducing gear（3）Output shaft be fixedly connected, the other end and the movement Bull stick（511）One end is slidably connected, the mobile bull stick（511）Structure and the fixed bull stick（510）Match, the shifting Turn bar（511）Can be in the fixed bull stick（510）Hollow hole in slidably and can transmit moment of torsion, the mobile bull stick （511）The other end passes through support frame（52）With travelling gear（53）It is fixedly connected, the travelling gear（53）With the geared sleeve Cylinder（6）Connection.

8. the electric wrench according to claim 1 or 7, it is characterised in that：

The gear sleeve（6）Outside is gear ring, with travelling gear（53）Engagement, inside is hexagon ring or 12 corner apertures.

9. according to the electric wrench described in any one of claim 1 ~ 7, it is characterised in that：

The travelling gear（53）For bevel gear or spur gear.