A multifunction drive mechanism, electric spade and electric grinder

Abstract

The application is suitable for the technical field of electric equipment, and particularly relates to a multifunctional driving mechanism, an electric spade and an electric grinder device. The multifunctional driving mechanism comprises a shell, a power driving structure, a driving control structure and an accessory connecting structure arranged in the shell. The power driving structure comprises a driving shaft, and the accessory connecting structure comprises a driven shaft. The driving control structure comprises an anti-rotation sleeve and a coupling. The coupling is arranged on the periphery of the driving shaft. The driven shaft is provided with an annular position avoiding groove. The shell is provided with a position switching switch. The first spring is arranged between the driving shaft and the coupling. The second spring is arranged between the driven shaft and the anti-rotation sleeve. The driving ball, the driven ball and the driving control structure are arranged, so that the mechanism can realize the random switching of axial movement and rotation movement. The electric grinder and the electric spade can be realized by cooperating with the corresponding accessories, the integration is improved, and the use cost is reduced.

Description

Technical Field

[0001] This invention belongs to the field of electric equipment technology, and particularly relates to a multi-functional drive mechanism, an electric shovel, and an electric grinder. Background Technology

[0002] For woodworking enthusiasts, electric grinders and electric scrapers are essential tools. They need to purchase both machines before starting their projects and then use them alternately during the process. Having a single machine that can perform the work of both can save them money, storage space, and reduce the amount of tools on their workbench.

[0003] Current drive mechanisms typically only allow for unidirectional drive, such as driving the electric grinding head to rotate or driving the electric scraper to reciprocate along the axis. Achieving both functions requires two separate drive mechanisms, resulting in higher operating costs. Summary of the Invention

[0004] The purpose of this invention is to provide a multifunctional drive mechanism, which aims to solve the problem that current drive mechanisms can usually only perform unidirectional drive, and that achieving two functions requires two separate drive mechanisms, resulting in high usage costs.

[0005] The present invention is implemented as follows: a multifunctional drive mechanism includes a housing, a drive shaft and a driven shaft. The multifunctional drive mechanism also includes a drive control structure and a gear shift switch. The gear shift switch is used to control the drive control structure to switch between a first position and a second position. When the drive control structure is in the first position, the drive shaft drives the driven shaft to rotate through the drive control structure. When the drive control structure is in the second position, the drive shaft drives the driven shaft to move axially through the drive control structure.

[0006] Preferably, the multi-functional drive mechanism further includes a power drive structure and an accessory connection structure. The drive control structure is connected to the power drive structure and the accessory connection structure respectively. The power drive structure includes a drive shaft, and the accessory connection structure includes a driven shaft. The power drive structure is used to output power to the drive control structure, and the accessory connection structure is used to connect different accessories.

[0007] Preferably, the drive control structure includes an anti-rotation sleeve and a coupling. The anti-rotation sleeve is fitted around the driven shaft and is slidably disposed within the housing. Both the driven shaft and the drive shaft are provided with at least one limiting plane. The coupling is fitted around the drive shaft. The driven shaft is provided with an annular clearance groove. The housing is provided with a gear shift switch, which is slidably disposed within a groove opened on the housing. A first spring is provided between the drive shaft and the coupling, and a second spring is provided between the driven shaft and the anti-rotation sleeve.

[0008] Preferably, the power drive structure includes an electronic control module and a motor, which are fixedly installed inside the housing. The motor is electrically connected to the electronic control module. A fan is installed on the output shaft of the motor. The output shaft of the motor is connected to the drive shaft. The drive shaft is rotatably connected to the housing through a bearing. The drive shaft is rotatably installed inside the housing. A drive ball is provided at the end of the drive shaft away from the fan.

[0009] Preferably, the accessory connection structure includes a driven shaft, a driving shaft and a driven shaft are coaxially arranged, the driven shaft is slidably connected to the outer shell through a bushing, and a driven ball is fixedly arranged at one end of the driven shaft near the driving shaft. Both the driving ball and the driven ball are eccentrically arranged.

[0010] Preferably, multiple sets of bushings are provided, and all bushings are fixedly installed inside the housing.

[0011] Another object of the present invention is to provide an electric shovel blade, including the multi-functional drive mechanism as described above, the electric shovel blade further including a connector for connecting to a driven shaft, the connector having a detachable shovel blade attached to it.

[0012] Another object of the present invention is to provide an electric grinder device, including the multifunctional drive mechanism as described above, the electric grinder device further including a connector for connecting to a driven shaft, and an electric grinder head is detachably connected to the connector.

[0013] The present invention provides a multifunctional drive mechanism with a simple structure and reasonable design. By setting up a drive ball, a driven ball, and a drive control structure, the mechanism can switch freely between axial motion and rotary motion. With corresponding accessories, it can realize two functions: electric grinder and electric shovel, which improves integration and reduces the cost of use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the first part of the structure of the multifunctional drive mechanism provided in an embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of the planar structure of an electric shovel provided in an embodiment of the present invention;

[0016] Figure 3 This is a three-dimensional structural schematic diagram of an electric shovel provided in an embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram of the second part of the multifunctional drive mechanism provided in an embodiment of the present invention;

[0018] Figure 5 This is a partial structural schematic diagram of the electric mill device provided in an embodiment of the present invention;

[0019] Figure 6 This is a schematic diagram of the installation of the coupling and anti-rotation sleeve provided in an embodiment of the present invention.

[0020] In the attached diagram: 1. Housing; 2. Electrical control module; 3. Motor; 4. Switch; 5. Fan; 6. Bearing; 7. Connector; 8. Shovel; 9. Coupling; 10. Anti-rotation sleeve; 11. Driven shaft; 14. Bushing; 15. Drive ball; 16. Driven ball; 17. Grinding head; 18. Gear shift switch. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0022] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the multifunctional drive mechanism includes a housing 1, within which a power drive structure, a drive control structure, and an accessory connection structure are disposed. The drive control structure is connected to both the power drive structure and the accessory connection structure. The power drive structure includes a drive shaft, and the accessory connection structure includes a driven shaft 11. The drive control structure includes an anti-rotation sleeve 10 and a coupling 9. The anti-rotation sleeve 10 is fitted around the driven shaft 11 and slidably disposed within the housing 1. Both the driven shaft 11 and the drive shaft have at least one limiting plane. The coupling 9 is fitted around the drive shaft. The driven shaft 11 has an annular clearance groove. The housing 1 has a gear shift switch 18, which slidably disposed within a groove on the housing 1. A first spring is disposed between the drive shaft and the coupling 9, and a second spring is disposed between the driven shaft 11 and the anti-rotation sleeve 10. The power drive structure is used to output power to the drive control structure, and the accessory connection structure is used to connect different accessories.

[0024] like Figure 1 As shown, in a preferred embodiment of the present invention, the power drive structure includes an electronic control module 2 and a motor 3. The electronic control module 2 and the motor 3 are fixedly installed inside the housing 1. The motor 3 is electrically connected to the electronic control module 2. A fan 5 is installed on the output shaft of the motor 3. The output shaft of the motor 3 is connected to the drive shaft. The drive shaft is rotatably connected to the housing through a bearing 6. The drive shaft is rotatably installed inside the housing 1. A drive ball 15 is provided at the end of the drive shaft away from the fan 5.

[0025] like Figure 1As shown, in a preferred embodiment of the present invention, the accessory connection structure includes a driven shaft 11, a driving shaft and a driven shaft 11 are coaxially arranged, a driven ball 16 is fixedly arranged at one end of the driven shaft 11 near the driving shaft, and both the driving ball 15 and the driven ball 16 are eccentrically arranged.

[0026] In this embodiment, the electronic control module 2 includes a battery and a switch 4. The electronic control module 2 can be powered by a battery or by AC power via a cable; the specific power supply method is not limited. The power drive structure generates torque, which is transmitted to the power drive structure via the drive shaft. When rotational output is required, the gear shift switch 18 drives the anti-rotation sleeve 10 to move towards the driven shaft 11. At this time, the anti-rotation sleeve 10 and the clearance groove are in the same plane, which is the first position. Therefore, the rotation of the driven shaft 11 is not affected by the anti-rotation sleeve 10. At this time, the first spring extends, the second spring compresses, and the coupling 9 is pushed towards the anti-rotation sleeve 10. Then, the inner wall of the coupling 9 simultaneously fits against the outer edges of both the drive shaft and the driven shaft 11. Due to the setting of the limiting plane, when the drive shaft rotates, it will drive the driven shaft 11 to rotate through the coupling 9. The drive shaft rotates stepwise to achieve the purpose of outputting torque. When working with the electric grinding head 17, it can perform grinding. When linear output is required, the anti-rotation sleeve 10 and the coupling 9 are slid toward the drive shaft by the gear shift switch 18. At this time, the coupling 9 is only in contact with the drive shaft and rotates with the drive shaft. At this time, the first spring is compressed and the second spring is extended. At this time, the inner edge of the anti-rotation sleeve 10 is in contact with the outer edge of the driven shaft 11, which is the second position. Since the anti-rotation sleeve 10 cannot rotate under the restriction of the outer shell 1, the driven shaft 11 can only move along the axial direction. When the driven shaft 11 is subjected to external force, the driven shaft 11 will drive the driven ball 16 to move toward the driving ball 15. When the drive shaft rotates, the driven ball 15 pushes the driven ball 16 back and forth. The driven ball 16 then drives the driven shaft 11 to move back and forth along the axial direction. When working with the blade 8, it can realize the function of an electric shovel.

[0027] In this embodiment, the drive shaft and driven shaft 11 are not directly connected. Instead, the connection between them is controlled by a drive control structure. During use, the motor 3 is powered by the electronic control module 2, and the power supply is controlled by the switch 4. Based on usage requirements, the user can change the connection between the drive shaft and driven shaft 11 using the drive control structure. When the user needs the mechanism to rotate, the drive control structure connects the drive shaft and driven shaft 11, making them rotate synchronously. If axial movement is required, the rotation of driven shaft 11 is restricted. Under the action of external force on driven shaft 11, drive ball 15 and driven ball 16 abut against each other. Since they are eccentrically set, when the drive shaft drives drive ball 15 to rotate eccentrically, it drives driven ball 16 to reciprocate along the axis of driven shaft 11 to achieve axial output.

[0028] like Figure 1 and Figure 2 As shown, an electric shovel blade provided by the present invention includes a multi-functional drive mechanism as described above. The electric shovel blade also includes a connector 7, which is used to connect to the driven shaft 11. A shovel blade 8 is detachably connected to the connector 7.

[0029] In this embodiment, the driven shaft 11 is controlled to move linearly by the drive control structure, thereby driving the scraper 8 to reciprocate. During use, the user places the scraper 8 against the workpiece. Under the reaction force of the workpiece, the driven shaft 11 will be pushed inward. With the cooperation of the drive ball 15 and the driven ball 16, the scraper 8 is driven to move linearly back and forth to complete the scraping operation.

[0030] like Figure 5 As shown, an electric shovel provided by the present invention includes a multi-functional drive mechanism as described above. The electric grinding device also includes a connector 7, which is used to connect to the driven shaft 11. An electric grinding head 17 is detachably connected to the connector 7.

[0031] In this embodiment, the driven shaft 11 is controlled to rotate by a drive control structure. At this time, the driven shaft 11 will drive the electric grinding head 17 to rotate, so as to complete the grinding operation of the workpiece.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-functional drive mechanism comprising a housing (1), a driving shaft and a driven shaft (11), characterized in that, The multifunctional driving mechanism further comprises a driving control structure and a gear shifting switch (18), the gear shifting switch (18) is used for controlling the driving control structure to switch between a first position and a second position, when the driving control structure is located at the first position, the driving shaft drives the driven shaft (11) to rotate through the driving control structure, when the driving control structure is located at the second position, the driving shaft drives the driven shaft (11) to move axially through the driving control structure; The driving control structure comprises an anti-rotation sleeve (10) and a shaft coupling (9), the anti-rotation sleeve (10) is sleeved on the periphery of the driven shaft (11), the anti-rotation sleeve (10) is slidingly arranged in the shell (1), at least one limiting plane is arranged on the driven shaft (11) and the driving shaft, the shaft coupling (9) is sleeved on the periphery of the driving shaft, an annular avoiding slot is arranged on the driven shaft (11), the gear shifting switch (18) is slidingly arranged in the sliding slot arranged on the shell (1), a first spring is arranged between the driving shaft and the shaft coupling (9), and a second spring is arranged between the driven shaft (11) and the anti-rotation sleeve (10). The multifunctional driving mechanism further comprises a power driving structure and an accessory connecting structure, the driving control structure is connected with the power driving structure and the accessory connecting structure respectively, the power driving structure comprises the driving shaft, and the accessory connecting structure comprises the driven shaft (11), the power driving structure is used for outputting power to the driving control structure, the accessory connecting structure is used for connecting different accessories, one end of the driving shaft away from the fan (5) is provided with a driving ball (15), the accessory connecting structure comprises the driven shaft (11), the driving shaft and the driven shaft (11) are coaxially arranged, the driven shaft (11) is slidingly connected with the shell (1) through the shaft sleeve (14), one end of the driven shaft (11) close to the driving shaft is fixedly provided with a driven ball (16), and the driving ball (15) and the driven ball (16) are eccentrically arranged.

2. The multi-functional drive mechanism according to claim 1, wherein The power driving structure comprises an electric control module (2) and a motor (3), the electric control module (2) and the motor (3) are fixedly installed in the shell (1), the motor (3) is electrically connected with the electric control module (2), the output shaft of the motor (3) is provided with the fan (5), the output shaft of the motor (3) is connected with the driving shaft, the driving shaft is rotatably connected with the shell through the bearing (6), and the driving shaft is rotatably installed in the shell (1).

3. The multi-functional drive mechanism according to claim 1, wherein A plurality of shaft sleeves (14) are arranged, and the shaft sleeves (14) are fixedly installed in the shell (1).

4. An electrically powered spatula, characterized in that The electric shovel further comprises a connecting head (7), the connecting head (7) is used for being connected with the driven shaft (11), and the shovel (8) is detachably connected to the connecting head (7).

5. An electric grinding device, characterized in that The electric grinder further comprises a connecting head (7), the connecting head (7) is used for being connected with the driven shaft (11), and the electric grinding head (17) is detachably connected to the connecting head (7).

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