CN217301465U

CN217301465U - Switching structure of dual-purpose electric tool

Info

Publication number: CN217301465U
Application number: CN202220473796.2U
Authority: CN
Inventors: 朱斌; 徐飞好
Original assignee: Zhengyang Technology Co ltd
Current assignee: Zhengyang Technology Co ltd
Priority date: 2022-03-07
Filing date: 2022-03-07
Publication date: 2022-08-26
Anticipated expiration: 2032-03-07

Abstract

The utility model discloses a switching structure of a dual-purpose electric tool, which comprises a shell and a working head component, it is characterized by also comprising a gear assembly, an output shaft assembly and an accelerating tooth assembly, wherein the gear assembly is in meshing transmission with a first gear of the output shaft assembly, the gear assembly is in mesh transmission with the accelerating teeth of the accelerating tooth assembly, the output shaft assembly comprises an output shaft, a bearing and a positioning convex part, the bearing is arranged on the output shaft and is fixedly connected with the shell, the positioning convex part is arranged at the bottom of the output shaft, the first gear is arranged on the positioning convex part through an elastic component, the output shaft can transversely slide, the output shaft assembly can be adjusted according to different working head assemblies, so as to realize the loosening and matching with the accelerating gear component and realize different rotating speed requirements of different working head components.

Description

Switching structure of dual-purpose electric tool

Technical Field

The utility model belongs to the technical field of electric tool and specifically relates to a switching structure of dual-purpose electric tool is related to.

Background

As is well known, electric tools with different purposes need different rotating speeds and different torques, and the change of the rotating speed of the electric tool in all electric tools at home and abroad is realized by adjusting the input voltage of the tool through a speed-adjusting switch. In this way, the reduction of the operating voltage of the electric tool is equal to the reduction of the input power of the electric tool, and the torque of the electric tool is also greatly reduced, so that the electric tool is not suitable for multiple purposes. Aiming at the defects in the prior art, the input power of the electric tool is not changed when the rotating speed of the electric tool is changed, and the rotating speed of the electric tool can be changed by automatically identifying different working heads through a mounting mode, so that the safe use of the electric tool is ensured, and the electric tool can achieve the purpose of one machine with multiple purposes. Therefore, many manufacturers and scientific research institutes develop and develop the products, but no satisfactory products are available.

Disclosure of Invention

The utility model provides a to prior art not enough, the utility model provides a dual-purpose type electric tool's switching structure can change electric tool's rotational speed through the different working heads of mounting means automatic identification.

The utility model provides a technical scheme that its technical problem adopted is: the switching structure of the dual-purpose electric tool comprises a shell, a working head component, a gear component, an output shaft component and an accelerating tooth component, wherein the gear component is in meshing transmission with a first gear of the output shaft component, the gear component is in meshing transmission with the accelerating tooth of the accelerating tooth component, and the output shaft component can be adjusted to be in a position according to different working head components so as to realize loosening and matching with the accelerating tooth component and realize different rotating speed requirements of different working head components.

In the above technical solution, further, the output shaft assembly includes an output shaft, a bearing and a positioning protrusion, the bearing is disposed on the output shaft and fixedly connected to the housing, the positioning protrusion is disposed at the bottom of the output shaft, the first gear is disposed on the positioning protrusion through an elastic member, and the output shaft can slide laterally.

Among the above-mentioned technical scheme, furtherly, tooth subassembly with higher speed is including accelerating gear and transmission shaft, accelerating gear sets up on the transmission shaft, the transmission shaft head pass through the axle sleeve with the output shaft rotates to be connected, set up the location concave part on the accelerating gear, thereby the location convex part of output shaft gets into thereby the joint drive can be realized to the location concave part accelerating the tooth and rotate.

In the above technical scheme, further, the gear assembly includes second gear, third gear and speed reduction gear shaft, speed reduction gear shaft both ends set up the bearing with the shell rotates and is connected, the second gear with first gear meshing transmission, speed reduction gear shaft with the acceleration gear meshing transmission of acceleration gear subassembly, the third gear meshes the transmission with the gear shaft of motor.

In the above technical solution, further, the working head assembly is a drill chuck assembly or a grinding wheel head assembly, the drill chuck assembly is clamped with the output shaft assembly, the grinding wheel head assembly includes an upper pressing plate, a lower pressing plate and a grinding wheel, the grinding wheel head assembly is fixedly connected with the output shaft assembly through a limiting member, and the grinding wheel is arranged between the upper pressing plate and the lower pressing plate.

The utility model has the advantages that: the output shaft is provided with different working heads, and the positions of the locked output shaft are different, so that the output shaft is separated from or clamped with the accelerating gear, and the switching of different rotating speeds is realized.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural view of a vertical surface of the present invention.

Fig. 2 is a schematic view of the internal structure of the drill chuck assembly of the present invention.

Fig. 3 is a schematic view of the internal structure of the grinding wheel head assembly of the present invention.

Fig. 4 is a schematic diagram of the state in which the output shaft of the present invention is disengaged from the transmission shaft.

Fig. 5 is a schematic diagram of the state of the output shaft and the transmission shaft of the present invention.

In the figure, 1, a shell, 2, a gear assembly, 21, a second gear, 22, a third gear, 23, a reduction gear shaft, 3, an output shaft assembly, 31, a first gear, 32, an output shaft, 33, a bearing, 34, a positioning convex part, 4, an acceleration gear assembly, 41, an acceleration gear, 42, a transmission shaft, 43, a shaft sleeve, 44, a positioning concave part, 5, a working head assembly, 51, a drill chuck assembly, 52, a grinding wheel head assembly, 521, an upper pressure plate, 522, a grinding wheel, 523, a lower pressure plate and 6, a motor are arranged.

Detailed Description

Referring to fig. 1-5, the switching structure of the dual-purpose electric tool includes a housing 1 and a working head assembly 5, and further includes a gear assembly 2, an output shaft assembly 3 and an accelerating tooth assembly 4, the gear assembly 2 is in meshing transmission with a first gear 31 of the output shaft assembly 3, the gear assembly 2 is in meshing transmission with an accelerating tooth of the accelerating tooth assembly 4, and the output shaft assembly 3 can be adjusted in position according to different working head assemblies 5 to realize loosening and matching with the accelerating tooth assembly 4, so as to realize different rotating speed requirements of different working head assemblies 5.

In order to enable the gear position to be automatically switched with different working head assemblies 5, the output shaft assembly 3 comprises an output shaft 32, a bearing 33 and a positioning convex part 34, the bearing 33 is arranged on the output shaft 32 and fixedly connected with the shell 1, the positioning convex part 34 is arranged at the bottom of the output shaft 32, the first gear 31 is arranged on the positioning convex part 34 through an elastic component, the elastic component is a spring, and the output shaft 32 can slide transversely.

In order to enable the rotation speed to be switched according to the position of the output shaft, the accelerating gear assembly 4 comprises an accelerating gear 41 and a transmission shaft 42, the accelerating gear 41 is arranged on the transmission shaft 42, the head part of the transmission shaft 42 is rotationally connected with the output shaft through a shaft sleeve 43, a positioning concave part 44 is arranged on the accelerating gear 41, and the positioning convex part 34 of the output shaft 32 enters the positioning concave part 44 to realize clamping so as to drive the accelerating gear to rotate.

The gear assembly 2 comprises a second gear 21, a third gear 22 and a reduction gear shaft 23, bearings 33 are arranged at two ends of the reduction gear shaft 23 and rotatably connected with the shell 1, the second gear 21 is in meshing transmission with the first gear 31, the reduction gear shaft 23 is in meshing transmission with an acceleration gear 41 of the acceleration gear assembly 4, and the third gear 22 is in meshing transmission with a gear shaft of the motor 6.

When the head of the output shaft 32 is set as a drill chuck assembly 51, the output shaft 32 is retreated by the elasticity of the spring, the positioning concave part 44 of the output shaft 32 is clamped with the positioning concave part 44 on the accelerating gear 41, the accelerating gear 41 is meshed with the decelerating toothed shaft 23, the toothed shaft of the motor 6 is meshed with the third gear 22 for transmission, at the moment, the first gear 31 idles, and the output rotating speed is 1000 RPM.

When the grinding wheel head assembly 52 is switched to, a higher rotating speed is needed, the lower pressing plate 523, the grinding wheel 522 and the upper pressing plate 521 are sequentially placed on the head of the output shaft 32 and locked by screws, the output shaft 32 is moved outwards by the locking force and presses the first gear 31, the positioning concave part 44 of the output shaft 32 is separated from the positioning concave part 44 on the accelerating gear 41, the accelerating gear 41 idles, the first gear 31 is meshed with the second gear 21, the gear shaft of the motor 6 is meshed with the third gear 22 for transmission, and the output rotating speed is 5000-6000 RPM.

According to the design, different working heads are arranged on the output shaft 32, and the position of the locked output shaft 32 is different, so that the output shaft is separated from or clamped with the accelerating gear 41, and the switching of different rotating speeds is realized.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention in any form, and the present invention is not departed from the technical solution of the present invention, and the made simple modification, equivalent change or modification all fall into the protection scope of the present invention.

Claims

1. The switching structure of the dual-purpose electric tool comprises a shell and working head components, and is characterized by further comprising a gear component, an output shaft component and an accelerating tooth component, wherein the gear component is in meshing transmission with a first gear of the output shaft component, the gear component is in meshing transmission with accelerating teeth of the accelerating tooth component, and the output shaft component can be adjusted to be in a position according to different working head components so as to realize loosening and matching with the accelerating tooth component and realize different rotating speed requirements of different working head components.

2. The switching structure of the dual-purpose electric tool according to claim 1, wherein the output shaft assembly includes an output shaft, a bearing and a positioning protrusion, the bearing is disposed on the output shaft and is fixedly connected to the housing, the positioning protrusion is disposed at a bottom of the output shaft, the first gear is disposed on the positioning protrusion through an elastic member, and the output shaft is slidable in a lateral direction.

3. The switching structure of the dual-purpose electric tool according to claim 2, wherein the accelerating gear assembly comprises an accelerating gear and a transmission shaft, the accelerating gear is disposed on the transmission shaft, a head portion of the transmission shaft is rotatably connected to the output shaft through a shaft sleeve, the accelerating gear is provided with a positioning concave portion, and a positioning convex portion of the output shaft enters the positioning concave portion to realize clamping and thus drive the accelerating gear to rotate.

4. The switching structure of the dual-purpose electric tool according to claim 1, wherein the gear assembly comprises a second gear, a third gear and a reduction gear shaft, bearings are disposed at two ends of the reduction gear shaft to be rotatably connected to the housing, the second gear is in mesh transmission with the first gear, the reduction gear shaft is in mesh transmission with the acceleration gear of the acceleration gear assembly, and the third gear is in mesh transmission with a gear shaft of the motor.

5. The switching structure of the dual-purpose electric tool according to claim 1, wherein the working head assembly is a drill chuck assembly or a wheel chuck assembly.

6. The switching mechanism of the dual-purpose electric tool as claimed in claim 5, wherein the drill chuck assembly is engaged with the output shaft assembly.

7. The switching structure of the dual-purpose electric tool according to claim 5, wherein the grinding wheel head assembly comprises an upper pressing plate, a lower pressing plate and a grinding wheel, the grinding wheel head assembly is fixedly connected with the output shaft assembly through a limiting member, and the grinding wheel is disposed between the upper pressing plate and the lower pressing plate.