CN220922225U - Electric wrench with metal tubular body structure - Google Patents

Abstract

The utility model provides an electric wrench with a metal tubular body structure, which relates to the technical field of electric tools and comprises an outer shell, an output mechanism and a handle, wherein the output mechanism is positioned in the outer shell, the handle is positioned below the output mechanism, the outer shell is cylindrical, the output mechanism comprises an inner shell, a driving motor, a planetary reduction gear, a striking block and an output shaft are arranged in the inner shell at one time, the inner shell is cylindrical, and a limiting device is arranged between the inner shell and the outer shell and used for limiting the rotation of the inner shell. Through all arranging driving motor, gear box and striking piece in the inner casing, compare in the plastics casing sectional structure on the market, can give each spare part better concentricity to through the shell body of metal material, make in carrying out the use can have good fuselage rigidity, can have better heat dissipation type, thereby increased the durability of complete machine.

Description

Electric wrench with metal tubular body structure

Technical Field

The utility model relates to the technical field of electric tools, in particular to an electric wrench with a metal tubular body structure.

Background

The electric spanner is an electric tool for tightening and loosening bolts and nuts, and is particularly suitable for primary tightening and final tightening of large hexagon head high-strength bolts in the occasions of steel structure bridges, factory buildings, chemical engineering, power generation equipment installation and the like, and primary tightening of torsion shear type high-strength bolts. The electric spanner can also play a good role in the occasion that the torque or the axial force of the bolt fastener has strict requirements. The electric wrench has the characteristics of flexible adjustment and the like, and can greatly improve the working efficiency.

The invention patent application number 2021111985007 provides a hand-held electric tool, the main body of which is mostly covered on the casing, and the casing comprises a machine barrel, a head casing and a tail casing, which are assembled through three-section casings, so that the assembly of internal parts is convenient, but the concentricity of each part needs to be adjusted in the installation process because the three-section casings are respectively installed, the installation is inconvenient, and the connection part is easy to damage.

Disclosure of utility model

The application aims to solve the technical problems of inconvenient concentricity adjustment and easy connection damage of a segmented structure in the prior art.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The utility model provides an electric wrench of metal tubular fuselage structure, includes shell body, output mechanism and handle, output mechanism is located inside the shell body, the handle is located output mechanism's below, the shell body is the cylinder, output mechanism includes the inner shell body, once be provided with driving motor, planetary reduction gear, striking piece and output shaft in the inner shell body, the inner shell body is the cylinder setting, the inner shell body with be provided with restriction device between the shell body, be used for right the rotation of inner shell body is restricted.

Preferably, a rear end cover is arranged at one end, deviating from the output shaft, of the inner shell, and the rear end cover is fixed on the inner shell through bolts.

Preferably, a cooling fan is arranged between the rear end cover and the driving motor, a bearing is arranged on one side, away from the driving motor, of the cooling fan, a groove is formed in the rear end cover, and the bearing is embedded in the groove.

Preferably, a compression spring is arranged between the striking block and the planetary reduction gear, the output shaft is connected with the planetary reduction gear and penetrates through the striking block, and the striking block and the compression spring are sleeved on the output shaft.

Preferably, a heat dissipation window is arranged above the outer shell, and the heat dissipation window is positioned on one side, close to the bottom cover, of the outer shell.

Preferably, the limiting device is an elastic limiting device.

Preferably, the limiting device comprises a clamping groove positioned on the outer shell and a clamping plate transversely arranged on the output mechanism, the clamping plate is inserted into the clamping groove, and buffer blocks are arranged on the upper side and the lower side of the clamping groove.

Above-mentioned metal tubular body structure's electric spanner through all arranging driving motor, gear box and striking piece in the inner casing, compares in the plastics casing sectional structure on market, can give each spare part better concentricity to through the shell body of metal material, make in carrying out the use can have good fuselage rigidity, can have better heat dissipation type, thereby increased the durability of complete machine.

Drawings

FIG. 1 is a schematic view of an electric wrench with a metal tubular body structure according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of an outer housing of an electric wrench with a metal tubular body structure according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram showing an electric wrench with a metal tubular body structure according to an embodiment of the present utility model;

fig. 4 is a schematic cross-sectional view of an output mechanism of an electric wrench with a metal tubular body structure according to an embodiment of the present utility model.

Legend description:

1. An outer housing; 11. a bottom cover; 12. a limiting plate; 13. a clamping groove; 14. a heat dissipation window; 2. an output mechanism; 21. an inner housing; 211. a rear end cover; 2111. a groove; 212. a top cover; 214. A clamping plate; 2141. a buffer block; 22. a heat radiation fan; 221. a bearing; 23. a driving motor; 24. a planetary reduction gear; 25. a striking block; 251. a spring; 26. an output shaft; 3. a handle; 31. a control switch; 32. a control module; 321. a control panel; 322. a driving power supply; 33. a positive and negative button; 34. wire slot.

Detailed Description

The present utility model will be described in further detail with reference to specific examples.

Referring to fig. 1 and 2, an electric wrench with a metal tubular body structure includes an outer housing 1, an output mechanism 2, and a handle 3, wherein the outer housing 1 is located at the periphery of the output mechanism 2, the handle 3 is located below the outer housing 1, in an embodiment, a limiting device is disposed between the outer housing 1 and the output mechanism 2, and the limiting device is used for limiting rotation between the outer housing 1 and the output mechanism 2, and in an embodiment, the limiting device is an elastic limiting device.

Referring to fig. 2, the outer casing 1 is configured in a cylindrical shape, in an embodiment, the outer casing 1 is a metal outer casing 1, one end of the outer casing 1 is provided with a bottom cover 11, the bottom cover 11 and the outer casing 1 are integrally formed, the other end of the outer casing 1 is provided with a limiting plate 12, the limiting plate 12 is configured in a circular ring shape, the limiting plate 12 abuts against an inner wall of the outer casing 1, and in an embodiment, the limiting plate 12 is fixed on the outer casing 1 through a bolt. Still be provided with draw-in groove 13 in the shell body 1, draw-in groove 13 is provided with two sets of, and one of them set of draw-in groove 13 is located on the inside wall of shell body 1, another set of draw-in groove 13 is located bottom 11 and limiting plate 12 are last for to the vibration that output mechanism 2 rotation in-process produced is buffered, draw-in groove 13 is the blind groove.

In one embodiment, in order to dissipate heat from the inner wall, a heat dissipation window 14 is disposed above the outer casing 1, and the heat dissipation window 14 is used for dissipating heat from the metal body.

Referring to fig. 3 and 4, the output mechanism 2 includes an inner housing 21, a cooling fan 22, a driving motor 23, a planetary reduction gear 24, a striking block 25 and an output shaft 26, wherein the inner housing 21 is in a cylindrical shape, an outer wall of the inner housing 21 is attached to the outer housing 1, and the inner housing 21 is rotatably disposed in the outer housing 1, in an embodiment, a rear end cover 211 is disposed at one end surface of the inner housing 21, the rear end cover 211 is fixedly disposed on the inner housing 21 by a bolt, and a groove 2111 is disposed at a central position of one side of the rear end cover 211 pointing to the inner housing 21. The inner housing 21 is provided with a top cover 212 on a side facing away from the rear end cover 211, and the top cover 212 and the inner housing 21 are integrally formed. In an embodiment, the inner housing 21 is further provided with a plurality of clamping plates 214, the clamping plates 214 are horizontally arranged, specifically, four clamping plates 214 are provided, two of the clamping plates 214 are located on a radial surface of the inner housing 21, and the other two clamping plates 214 are respectively located at two ends of the inner housing 21 in the length direction. Buffer blocks 2141 are respectively arranged on the upper side and the lower side of the clamping plate 214, and the buffer blocks 2141 are embedded in the clamping groove 13. The clamping plate 214, the buffer block 2141 and the clamping groove 13 form an elastic limiting device.

In one embodiment, the buffer block 2141 is a rubber block, a buffer block 2141 that abuts the spring 251 or other flexible material.

Referring to fig. 3 and 4, the cooling fan 22, the driving motor 23, the planetary reduction gear 24, and the striking block 25 are sequentially arranged along the rear end cover 211 of the inner housing 21 toward the inner housing 21. In an embodiment, a bearing 221 is disposed on a side of the cooling fan 22 directed to the rear end cover 211, and the bearing 221 and the groove 2111 are disposed in a matching manner.

The driving motor 23 is located between the cooling fan 22 and the planetary reduction gear 24, and a motor shaft of the driving motor 23 is connected to the cooling fan 22 and the planetary reduction gear 24, respectively, for driving the cooling fan 22 and the planetary reduction gear 24 to rotate.

The output shaft 26 is located on the planetary reduction gear 24 and extends to the top cover 212 side of the inner housing 21, the striking block 25 is sleeved on the output shaft 26, in an embodiment, a spring 251 is further sleeved on the output shaft 26, and the spring 251 is abutted between the planetary reduction gear 24 and the striking block 25.

Referring to fig. 1, the handle 3 is located below the outer housing 1, the handle 3 is vertically disposed, a control switch 31 is disposed at the top of the handle 3, the control switch 31 is used for driving the driving motor 23 to be turned on or off, a control module 32 is disposed at the bottom of the handle 3, and in an embodiment, a control panel 321 and a driving power supply 322 are disposed in the control module 32. The control panel 321 is electrically connected to the control switch 31, and is configured to drive the driving motor 23, and in an embodiment, a forward and reverse button 33 is further disposed on one side of the handle 3, and is configured to control forward rotation and reverse rotation of the driving motor 23. In an embodiment, the housing and the outer housing 1 are integrally formed, and a plurality of wire slots 34 are formed in the housing for inserting power wires.

According to the electric wrench with the metal tubular body structure, the driving motor 23, the gear box and the striking block 25 are arranged in the inner shell 21, so that compared with a plastic shell sectional structure in the market, the electric wrench can give better concentricity to all parts, and through the outer shell 1 made of metal materials, good body rigidity and better heat dissipation in the using process can be achieved, and therefore the durability of the whole electric wrench is improved.

Claims (7)

1. The utility model provides an electric spanner of tubular metal body structure, includes shell body, output mechanism and handle, output mechanism is located inside the shell body, the handle is located output mechanism's below, its characterized in that: the outer shell is the cylinder, output mechanism includes the inner shell, once be provided with driving motor, planetary reduction gear, striking piece and output shaft in the inner shell, the inner shell is the cylinder setting, the inner shell with be provided with restriction device between the outer shell, be used for right the rotation of inner shell is restricted.

2. The electric wrench of claim 1, wherein the electric wrench further comprises: the inner shell is provided with a rear end cover at one end deviating from the output shaft, and the rear end cover is fixed on the inner shell through bolts.

3. The electric wrench of claim 2, wherein the electric wrench further comprises: a cooling fan is arranged between the rear end cover and the driving motor, a bearing is arranged on one side, away from the driving motor, of the cooling fan, a groove is formed in the rear end cover, and the bearing is embedded in the groove.

4. The electric wrench of claim 1, wherein the electric wrench further comprises: the striking block is connected with the planetary reduction gear through the planetary reduction gear, and the striking block and the compression spring are sleeved on the output shaft.

5. The electric wrench of claim 1, wherein the electric wrench further comprises: and a heat dissipation window is arranged above the outer shell and is positioned on the shell wall of the outer shell.

6. The electric wrench of claim 1, wherein the electric wrench further comprises: the limiting device is an elastic limiting device.

7. The electric wrench of claim 6, further comprising: the limiting device comprises a clamping groove positioned on the outer shell and a clamping plate transversely arranged on the output mechanism, wherein the clamping plate is inserted into the clamping groove, and buffer blocks are arranged on the upper side and the lower side of the clamping groove.