CN215470817U - Small-torque electric screwdriver - Google Patents
Small-torque electric screwdriver Download PDFInfo
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- CN215470817U CN215470817U CN202122309504.XU CN202122309504U CN215470817U CN 215470817 U CN215470817 U CN 215470817U CN 202122309504 U CN202122309504 U CN 202122309504U CN 215470817 U CN215470817 U CN 215470817U
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- sleeve
- rotating
- direct current
- bull stick
- current motor
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Abstract
The utility model relates to a small-torque electric screwdriver which comprises a direct current motor, a screwdriver head and a transmission mechanism arranged between the direct current motor and the screwdriver head, wherein the transmission mechanism comprises a shell arranged on the direct current motor and a transmission assembly arranged in the shell, the transmission assembly comprises a rotating sleeve which is in linkage arrangement with the direct current motor, an opening sleeve which is rotatably arranged in the rotating sleeve, a rotating rod which is movably arranged in the rotating sleeve and is in linkage fit with the opening sleeve, a pressing block which is abutted against the opening sleeve, an adjusting screw arranged in the rotating sleeve and an adjusting spring arranged between the adjusting screw and the pressing block, one end of the rotating rod extends out of the rotating sleeve, a connecting sleeve is arranged at one end of the rotating rod, the screwdriver head is arranged on the connecting sleeve, and a buffer spring is arranged on the rotating rod corresponding to the position between the connecting sleeve and the rotating sleeve. The utility model has the advantages of simple structure, stable and reliable performance, small volume and high working efficiency.
Description
Technical Field
The utility model relates to a screwdriver, in particular to a small-torque electric screwdriver.
Background
Currently, power screwdrivers are power tools used to tighten and loosen screws. The electric tool is provided with a mechanism for adjusting and limiting torque, is mainly used for assembly lines, and is one of necessary tools for most production enterprises. The existing electric screwdriver is complex in structural design, so that the electric screwdriver has the defects of unreliable performance, inconvenient assembly, large size and low working efficiency.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides the small-torque electric screwdriver which is simple in structure, stable and reliable in performance, small in size and high in working efficiency.
In order to achieve the purpose, the utility model adopts a small-torque electric screwdriver which comprises a direct current motor, a screwdriver bit and a transmission mechanism arranged between the direct current motor and the screwdriver bit, wherein the transmission mechanism comprises a shell arranged on the direct current motor and a transmission assembly arranged in the shell, the transmission assembly comprises a rotating sleeve which is in linkage arrangement with the direct current motor, an opening sleeve which is rotatably arranged in the rotating sleeve, a rotating rod which is movably arranged in the rotating sleeve and is in linkage fit with the opening sleeve, a pressing block which is abutted against the opening sleeve, an adjusting screw arranged in the rotating sleeve and an adjusting spring arranged between the adjusting screw and the pressing block, one end of the rotating rod extends out of the rotating sleeve, a connecting sleeve is arranged at one end of the rotating rod, the screwdriver bit is arranged on the connecting sleeve, and a buffer spring is arranged on the rotating rod corresponding to the position between the connecting sleeve and the rotating sleeve.
The beneficial effect of above-mentioned structure is: the small-torque electric screwdriver has the advantages of simple structure, stable and reliable performance, small size and high working efficiency. When the electric screwdriver is screwed, the screw is pressed by the tool rest to move downwards to the opening sleeve along with the compression of the buffer spring, when the screw is screwed into the screw, the rotating rod moves downwards along with the compression of the buffer spring, the opening sleeve, the rotating rod and the screwdriver head stop rotating, the pressing block slides and rotates on the contact surface of the opening sleeve, and the direct current motor runs under a certain load.
Particularly, the rotating shaft of the direct current motor is provided with a pair wheel, the pair wheel is provided with a clamping groove, one end of the rotating sleeve is provided with a convex block matched with the clamping groove, and the convex block is clamped in the clamping groove and forms clamping matching of the pair wheel and the rotating sleeve. The paired wheel and the rotating sleeve are connected in a clamping matching mode, so that the paired wheel and the rotating sleeve can be assembled conveniently, the transmission of the paired wheel and the rotating sleeve can be more reliable, and the working reliability of the electric screwdriver can be improved.
Particularly, the opening cover on be provided with the spacing groove, the bull stick one serve and be provided with the joint piece, joint piece block in the spacing inslot, and constitute the joint cooperation of bull stick and opening cover. The opening sleeve and the rotating rod are connected in a clamping matching mode, so that the opening sleeve and the rotating rod are convenient to assemble, and the assembly efficiency of the electric screwdriver is improved.
In particular, a bearing is arranged between the rotating sleeve and the shell. The bearing can play a role in reducing friction, and can ensure the rotation precision of the rotating sleeve, thereby being beneficial to improving the working reliability of the electric screwdriver.
Drawings
Fig. 1 is an internal structural view of an embodiment of the present invention.
Fig. 2 is a perspective view of a swivel sleeve according to an embodiment of the present invention.
FIG. 3 is a perspective view of a wheel according to an embodiment of the present invention.
FIG. 4 is a perspective view of an open sleeve according to an embodiment of the present invention.
Fig. 5 is a perspective view of a rotating rod according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1 to 5, an electric screwdriver with small torque according to an embodiment of the present invention includes a dc motor 10, a screwdriver bit 11, and a transmission mechanism 20 disposed between the dc motor 10 and the screwdriver bit 11, where the transmission mechanism 20 includes a housing 21 disposed on the dc motor 10, and a transmission assembly 30 disposed in the housing 21, the transmission assembly 30 includes a rotating sleeve 31 linked with the dc motor 10, an opening sleeve 32 rotatably disposed in the rotating sleeve 31, a rotating rod 33 movably disposed in the rotating sleeve 31 and linked with the opening sleeve 32, a pressing block 34 abutting against the opening sleeve 32, an adjusting screw 35 disposed in the rotating sleeve 31, and an adjusting spring 36 disposed between the adjusting screw 35 and the pressing block 34, one end of the rotating rod 33 extends out of the rotating sleeve 31, and one end of the rotating rod 33 is provided with a connecting sleeve 37, the screwdriver bit 11 is disposed on the connecting sleeve 37, a buffer spring 38 is arranged on the rotating rod 33 corresponding to the position between the connecting sleeve 37 and the rotating sleeve 31. A bearing 40 is arranged between the rotating sleeve 31 and the shell 21. The bearing can play a role in reducing friction, and can ensure the rotation precision of the rotating sleeve, thereby being beneficial to improving the working reliability of the electric screwdriver.
As shown in fig. 2, 3, 4 and 5, a pair wheel 39 is disposed on the rotating shaft 101 of the dc motor 10, a slot 391 is disposed on the pair wheel 39, a protrusion 311 engaged with the slot 391 is disposed on one end of the rotating sleeve 31, the protrusion 311 is engaged in the slot 391, and the pair wheel 39 and the rotating sleeve 31 are engaged with each other. The paired wheel and the rotating sleeve are connected in a clamping matching mode, so that the paired wheel and the rotating sleeve can be assembled conveniently, the transmission of the paired wheel and the rotating sleeve can be more reliable, and the working reliability of the electric screwdriver can be improved. Opening cover 32 on be provided with spacing groove 321, the bull stick 33 one serve and be provided with joint piece 331, joint piece 331 block in spacing groove 321, and constitute the joint cooperation of bull stick 33 and opening cover 32. The opening sleeve and the rotating rod are connected in a clamping matching mode, so that the opening sleeve and the rotating rod are convenient to assemble, and the assembly efficiency of the electric screwdriver is improved.
The small-torque electric screwdriver has the advantages of simple structure, stable and reliable performance, small size and high working efficiency. When the electric screwdriver is screwed, the screw is pressed by the tool rest to move downwards to the opening sleeve along with the compression of the buffer spring, when the screw is screwed into the screw, the rotating rod moves downwards along with the compression of the buffer spring, the opening sleeve, the rotating rod and the screwdriver head stop rotating, the pressing block slides and rotates on the contact surface of the opening sleeve, and the direct current motor runs under a certain load.
Claims (4)
1. The utility model provides a little moment of torsion electric screwdriver, includes direct current motor, screwdriver bit, sets up the drive mechanism between direct current motor and screwdriver bit, its characterized in that: drive mechanism including setting up shell on DC motor, setting transmission assembly in the shell, transmission assembly include the commentaries on classics cover that sets up with DC motor linkage, rotate and set up in changeing the cover opening cover, the activity set up in changeing the cover and with opening cover linkage complex bull stick, conflict briquetting on the opening cover, set up adjusting screw in changeing the cover, set up adjusting spring between adjusting screw and briquetting, the one end of bull stick extend and overlap outside changeing, and one of bull stick serves and be provided with the adapter sleeve, screwdriver bit set up on the adapter sleeve, the bull stick on correspond the adapter sleeve and change and overlap between the department and be provided with buffer spring.
2. The low-torque electric screwdriver according to claim 1, wherein: the rotating shaft of the direct current motor is provided with a pair wheel, the pair wheel is provided with a clamping groove, one end of the rotating sleeve is provided with a convex block matched with the clamping groove, and the convex block is clamped in the clamping groove and forms clamping matching of the pair wheel and the rotating sleeve.
3. The small-torque electric screwdriver according to claim 1 or 2, characterized in that: the opening cover in be provided with the spacing groove, one of bull stick serve and be provided with the joint piece, joint piece block in the spacing inslot, and constitute the joint cooperation of bull stick and opening cover.
4. The small-torque electric screwdriver according to claim 1 or 2, characterized in that: and a bearing is arranged between the rotating sleeve and the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122309504.XU CN215470817U (en) | 2021-09-22 | 2021-09-22 | Small-torque electric screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122309504.XU CN215470817U (en) | 2021-09-22 | 2021-09-22 | Small-torque electric screwdriver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215470817U true CN215470817U (en) | 2022-01-11 |
Family
ID=79769939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122309504.XU Active CN215470817U (en) | 2021-09-22 | 2021-09-22 | Small-torque electric screwdriver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215470817U (en) |
-
2021
- 2021-09-22 CN CN202122309504.XU patent/CN215470817U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |