Planetary gear reduction type electric screwdriver

Abstract

The utility model discloses a planetary gear reduction formula electric screwdriver, the utility model relates to electric screwdriver technical field, including electric screwdriver main part, still include: heat dissipation structure, heat dissipation structure sets up in one end of electric screwdriver main part, is used for the operation heat dissipation of drive motor etc. Component setting in electric screwdriver main part, fixed structure, sets up in one side of electric screwdriver main part, is used for the fixed connection and replacement of screwdriver head of different styles, this planetary gear reduction formula electric screwdriver is provided with heat dissipation structure, and its connecting frame passes through connecting screw hole and bolt, can realize the stable connection of heat dissipation base, connecting part and filter plate, the cooperation of limiting groove, push slide, accommodation groove, reset spring and limiting fixed plate makes the filter plate convenient to dismount, is convenient for cleaning dust to guarantee ventilation and heat dissipation, can also easily maintain, has improved the heat dissipation stability and maintenance convenience of electric screwdriver.

Description

Technical Field

[0001] This utility model relates to the field of electric screwdriver technology, specifically a planetary gear reduction type electric screwdriver. Background Technology

[0002] Planetary gear reducer electric screwdrivers are electric screw-tightening tools equipped with a planetary gear reduction mechanism. Through the meshing transmission of the planetary gear set, the motor speed is reduced and the output torque is increased. When paired with a screwdriver bit, it can efficiently tighten or loosen screws. It features small size, stable torque, and labor-saving operation. It is widely used in electronic assembly, home installation, industrial production and other scenarios, and is suitable for the operation needs of screws of different sizes.

[0003] An electric screwdriver and its transmission mechanism are disclosed in patent application number CN216030484U. The transmission mechanism includes a motor mounted within a housing, a planetary reduction gear assembly, and a drive shaft mounted within the housing. One end of the drive shaft is fitted and tightly fitted to the output shaft of the motor, and the other end has a gear portion that meshes with and is relatively fixed to the sun gear of the planetary reduction gear assembly. In this transmission mechanism, the planetary reduction gear assembly facilitates low-speed, high-torque output of the electric screwdriver. The drive shaft positioned between the motor and the planetary reduction gear assembly improves the assembly effect of the motor and the planetary reduction gear assembly, including enhancing the precision and stability of their integrated assembly, and facilitating the quick and easy installation of a standardized motor in this transmission mechanism.

[0004] As shown in the above-mentioned device, the existing planetary gear reducer electric screwdriver, although equipped with a planetary reduction assembly to achieve low-speed high-torque output, has difficulty in effectively dissipating heat when the internal components such as the drive motor are operating. It is prone to performance degradation, shortened lifespan or even failure due to overheating. In addition, it lacks a filtration function, and external dust and impurities can easily enter the internal components through the heat dissipation channel, affecting normal operation. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a planetary gear reduction electric screwdriver, which solves the problems of existing technologies.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a planetary gear reduction electric screwdriver, comprising an electric screwdriver body, and further comprising: A heat dissipation structure is provided at one end of the electric screwdriver body for dissipating heat during the operation of the drive motor installed inside the electric screwdriver body. A fixed structure is set on one side of the electric screwdriver body for fixing and replacing screwdriver bits of different styles; The heat dissipation structure includes a heat dissipation base, which is fixedly installed on the inner wall of the electric screwdriver body. A cooling fan is fixedly installed on the inner wall of the heat dissipation base. An air supply frame is fixedly connected to one end of the heat dissipation base. A heat-conducting grid plate is fixedly installed on the inner wall of the air supply frame. A connecting component is bolted to the other end of the heat dissipation base. A filter plate is connected to the heat dissipation base through the connecting component.

[0007] Preferably, the connecting component includes a connecting frame, the outer wall of which has a connecting screw hole, and the connecting frame is fixedly connected to one end of the heat dissipation base by bolts through the connecting screw hole. The outer wall of the connecting frame has a limiting groove, and a pushing slide is slidably connected to the inner wall of the limiting groove. The outer wall of the connecting frame has a placement groove, and a return spring is fixedly installed on the inner wall of the placement groove. The other end of the return spring is fixedly connected to a limiting fixing plate, and the outer wall of the limiting fixing plate is fixedly connected to the pushing slide.

[0008] Preferably, the fixing structure includes a rotating seat, which is disposed on one side of the electric screwdriver body. A limiting threaded seat is fixedly installed on the outer wall of the rotating seat, and a transmission rod is fixedly installed on the inner wall of the limiting threaded seat. A connecting groove is formed on the outer wall of the transmission rod, and a sliding groove is formed on the outer wall of the transmission rod. A fixing clamp is slidably connected to the outer wall of the sliding groove, and a buffer spring is fixedly connected to the outer wall of the fixing clamp. A rotating sleeve is threadedly connected to the outer wall of the limiting threaded seat.

[0009] Preferably, a fixing frame is fixedly connected to the outer wall of the electric screwdriver body, and a planetary gear component is provided at one end of the fixing frame.

[0010] Preferably, the planetary gear component includes a housing, which is fixedly connected to one end of a fixed frame. The outer wall of the fixed frame is provided with a scale, the inner wall of the housing is rotatably connected to a rotating seat, and the inner wall of the housing is provided with a planetary gear set.

[0011] Preferably, a charging base is fixedly connected to the bottom end of the electric screwdriver body, a screwdriver head is fixedly connected to the outer wall of the electric screwdriver body through a fixing structure, and a ventilation groove is provided on the outer wall of the electric screwdriver body.

[0012] This utility model provides a planetary gear reduction type electric screwdriver. Compared with the prior art, it has the following advantages: 1. This planetary gear reducer electric screwdriver is equipped with a heat dissipation structure. Its connecting frame can achieve a stable connection between the heat dissipation base, connecting parts and filter plate through connecting screw holes and bolts. The cooperation of the limiting groove, pushing slide, mounting groove, return spring and limiting fixing plate makes the filter plate easy to disassemble and assemble. It is easy to clean dust to ensure ventilation and heat dissipation, and easy to maintain, which improves the heat dissipation stability and maintenance convenience of the electric screwdriver.

[0013] 2. This planetary gear reduction electric screwdriver has a fixed structure. Through the cooperation of components such as the rotating seat, the limit thread seat, and the transmission rod, when the rotating sleeve is rotated, it can drive the fixed clamping plate to slide along the slide groove. The buffer spring is retractable, which makes it easy to adjust the spacing of the fixed clamping plate, thereby realizing the fixing or replacement of different types of screwdriver heads, improving the flexibility and adaptability of the electric screwdriver. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the heat dissipation structure of this utility model; Figure 4 This is a schematic diagram of the connecting component of this utility model; Figure 5 This is a bottom sectional view of the connecting component of this utility model; Figure 6 This is an exploded cross-sectional view of the fixed structure of this utility model.

[0015] In the diagram: 1. Electric screwdriver body; 2. Charging base; 3. Ventilation slot; 4. Heat dissipation structure; 41. Heat dissipation base; 42. Cooling fan; 43. Air supply frame; 44. Heat-conducting grid plate; 45. Connecting component; 451. Connecting frame; 452. Connecting screw hole; 453. Limiting slot; 454. Pushing slide; 455. Placement slot; 456. Return spring; 457. Limiting fixing plate; 46. Filter plate; 5. Fixing frame; 6. Planetary gear component; 7. Fixing structure; 71. Rotating seat; 72. Limiting threaded seat; 73. Transmission rod; 74. Connecting slot; 75. Slide groove; 76. Fixing clamp; 77. Buffer spring; 78. Rotating sleeve; 8. Screwdriver head. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] See Figures 1-6 This utility model provides the following two technical solutions: First embodiment: A planetary gear reduction type electric screwdriver, including an electric screwdriver body 1, and further comprising: Heat dissipation structure 4 is located at one end of the electric screwdriver body 1 and is used to dissipate heat during the operation of the drive motor installed inside the electric screwdriver body 1. The fixing structure 7 is set on one side of the electric screwdriver body 1 and is used for fixing and replacing screwdriver heads 8 of different styles; A fixed frame 5 is fixedly connected to the outer wall of the electric screwdriver body 1. A planetary gear component 6 is provided at one end of the fixed frame 5. The planetary gear component 6 includes a shell, which is fixedly connected to one end of the fixed frame 5. A scale is provided on the outer wall of the fixed frame 5. The inner wall of the shell is rotatably connected to the rotating seat 71. A planetary gear set is provided on the inner wall of the shell. A charging base 2 is fixedly connected to the bottom end of the electric screwdriver body 1. A screwdriver head 8 is fixedly connected to the outer wall of the electric screwdriver body 1 through a fixing structure 7. A ventilation groove 3 is provided on the outer wall of the electric screwdriver body 1.

[0018] The heat dissipation structure 4 includes a heat dissipation base 41, which is fixedly installed on the inner wall of the electric screwdriver body 1. A cooling fan 42 is fixedly installed on the inner wall of the heat dissipation base 41. An air supply frame 43 is fixedly connected to one end of the heat dissipation base 41. A heat-conducting grid plate 44 is fixedly installed on the inner wall of the air supply frame 43. A connecting component 45 is bolted to the other end of the heat dissipation base 41. A filter plate 46 is connected to the heat dissipation base 41 through the connecting component 45.

[0019] The connecting component 45 includes a connecting frame 451. The outer wall of the connecting frame 451 has a connecting screw hole 452. The connecting frame 451 is fixedly connected to one end of the heat dissipation base 41 by bolts through the connecting screw hole 452. The outer wall of the connecting frame 451 has a limiting groove 453. The inner wall of the limiting groove 453 is slidably connected to a pushing slide plate 454. The outer wall of the connecting frame 451 has a placement groove 455. The inner wall of the placement groove 455 is fixedly installed with a return spring 456. The other end of the return spring 456 is fixedly connected to a limiting fixing plate 457. The outer wall of the limiting fixing plate 457 is fixedly connected to the pushing slide plate 454.

[0020] This planetary gear reduction electric screwdriver is equipped with a heat dissipation structure 4. The connecting component 45 of the heat dissipation structure 4 has significant advantages. Its connecting frame 451, through the connecting screw hole 452 and bolt, can achieve a stable connection between the heat dissipation base 41, the connecting component 45 and the filter plate 46. The cooperation of the limiting groove 453, the pushing slide plate 454, the mounting groove 455, the return spring 456 and the limiting fixing plate 457 makes it easy to disassemble and assemble the filter plate 46. It is convenient to clean dust to ensure ventilation and heat dissipation, and easy to maintain, which improves the heat dissipation stability and maintenance convenience of the electric screwdriver.

[0021] The second embodiment differs from the first embodiment in that: the fixed structure 7 includes a rotating seat 71, which is disposed on one side of the electric screwdriver body 1. A limiting threaded seat 72 is fixedly installed on the outer wall of the rotating seat 71. A transmission rod 73 is fixedly installed on the inner wall of the limiting threaded seat 72. A connecting groove 74 is opened on the outer wall of the transmission rod 73. A sliding groove 75 is opened on the outer wall of the transmission rod 73. A fixed clamping plate 76 is slidably connected to the outer wall of the sliding groove 75. A buffer spring 77 is fixedly connected to the outer wall of the fixed clamping plate 76. A rotating sleeve 78 is threadedly connected to the outer wall of the limiting threaded seat 72.

[0022] This planetary gear reduction electric screwdriver is equipped with a fixed structure 7. Through the cooperation of components such as the rotating seat 71, the limiting thread seat 72, and the transmission rod 73, when the rotating sleeve 78 is rotated, the fixed clamping plate 76 can be driven to slide along the slide groove 75. The buffer spring 77 is telescopic, which makes it easy to adjust the spacing of the fixed clamping plate 76, thereby realizing the fixing or replacement of different types of screwdriver heads 8, improving the flexibility and adaptability of the electric screwdriver.

[0023] Furthermore, all content not described in detail in this specification is existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used.

[0024] When the planetary gear reducer electric screwdriver is working, the charging base 2 supplies power to the electric screwdriver body 1. The heat generated by the operation of the drive motor and other components is dissipated through the heat dissipation structure 4: the heat dissipation base 41 is fixed to the inner wall of the electric screwdriver body 1, the cooling fan 42 starts to generate airflow, which is guided by the heat-conducting grid plate 44 in the air supply frame 43 to enhance the heat dissipation effect on the internal components. The ventilation slot 3 assists in air circulation. When the filter plate 46 is installed, the connecting part 45 of the heat dissipation structure 4 pushes the push slide plate 454 in the limiting groove 453 on the outer wall of the connecting frame 451, so that the limiting fixing plate 457 compresses the return spring 456 in the placement groove 455. After the filter plate 46 is connected to the connecting frame 451, the return spring 456 returns to push the limiting fixing plate 457, and with the connecting screw hole 452 and bolt, a stable connection is achieved between the heat dissipation base 41, the connecting part 45 and the filter plate 46. The filter plate 46 can filter the dust that enters and is easy to disassemble and maintain. When it is necessary to replace the screwdriver bit 8, the operation is carried out through the fixing structure 7: the rotating sleeve 78 is threadedly connected to the limiting threaded seat 72. When the rotating sleeve 78 is rotated, the fixing clamp 76 is driven to slide along the slide groove 75 on the outer wall of the transmission rod 73. The buffer spring 77 extends and retracts accordingly, adjusting the spacing of the fixing clamp 76, thereby fixing or loosening different types of screwdriver bits 8 and completing the bit replacement. In addition, the fixing frame 5 on the outer wall of the electric screwdriver body 1 is connected to the planetary gear component 6. The planetary gear set inside its housing realizes the reduction transmission. The scale on the outer wall of the fixing frame 5 can help adjust the transmission parameters to ensure that the speed and torque of the electric screwdriver are adapted to the working requirements.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A planetary gear reduction type electric screwdriver, comprising an electric screwdriver body (1), characterized in that, Also includes: Heat dissipation structure (4), the heat dissipation structure (4) is disposed at one end of the electric screwdriver body (1) for heat dissipation of the drive motor installed inside the electric screwdriver body (1); A fixing structure (7) is set on one side of the electric screwdriver body (1) for fixing and replacing screwdriver heads (8) of different styles; The heat dissipation structure (4) includes a heat dissipation base (41), which is fixedly installed on the inner wall of the electric screwdriver body (1). A cooling fan (42) is fixedly installed on the inner wall of the heat dissipation base (41). An air supply frame (43) is fixedly connected to one end of the heat dissipation base (41). A heat-conducting grid plate (44) is fixedly installed on the inner wall of the air supply frame (43). A connecting component (45) is bolted to the other end of the heat dissipation base (41). A filter plate (46) is connected to the heat dissipation base (41) through the connecting component (45).

2. The planetary gear reduction electric screwdriver according to claim 1, characterized in that: The connecting component (45) includes a connecting frame (451). The outer wall of the connecting frame (451) is provided with a connecting screw hole (452). The connecting frame (451) is fixedly connected to one end of the heat dissipation base (41) by bolts through the connecting screw hole (452). The outer wall of the connecting frame (451) is provided with a limiting groove (453). The inner wall of the limiting groove (453) is slidably connected with a push plate (454). The outer wall of the connecting frame (451) is provided with a placement groove (455). The inner wall of the placement groove (455) is fixedly installed with a return spring (456). The other end of the return spring (456) is fixedly connected with a limiting fixing plate (457). The outer wall of the limiting fixing plate (457) is fixedly connected to the push plate (454).

3. The planetary gear reduction electric screwdriver according to claim 1, characterized in that: The fixed structure (7) includes a rotating seat (71), which is located on one side of the electric screwdriver body (1). A limiting thread seat (72) is fixedly installed on the outer wall of the rotating seat (71). A transmission rod (73) is fixedly installed on the inner wall of the limiting thread seat (72). A connecting groove (74) is provided on the outer wall of the transmission rod (73). A sliding groove (75) is provided on the outer wall of the transmission rod (73). A fixed clamping plate (76) is slidably connected to the outer wall of the sliding groove (75). A buffer spring (77) is fixedly connected to the outer wall of the fixed clamping plate (76). A rotating sleeve (78) is threadedly connected to the outer wall of the limiting thread seat (72).

4. The planetary gear reduction electric screwdriver according to claim 1, characterized in that: The outer wall of the electric screwdriver body (1) is fixedly connected to a fixing frame (5), and a planetary gear component (6) is provided at one end of the fixing frame (5).

5. A planetary gear reduction electric screwdriver according to claim 4, characterized in that: The planetary gear component (6) includes a housing, which is fixedly connected to one end of a fixed frame (5). The outer wall of the fixed frame (5) is provided with a scale, and the inner wall of the housing is rotatably connected to a rotating seat (71). The inner wall of the housing is provided with a planetary gear set.

6. The planetary gear reduction electric screwdriver according to claim 1, characterized in that: The electric screwdriver body (1) is fixedly connected to a charging base (2) at its bottom end. The screwdriver head (8) is fixedly connected to the outer wall of the electric screwdriver body (1) through a fixing structure (7). A ventilation groove (3) is provided on the outer wall of the electric screwdriver body (1).

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