An electric screwdriver

Abstract

The utility model provides a kind of electric screwdriver, belong to screwdriver technical field.It solves the problem of unstable adjusting mechanism in prior art.The utility model's torque adjustment window side inside screwdriver shell is fixedly installed with control convex body, connection hole is opened in control convex body, and connection key is formed on the end face of torque adjustment ring, torque adjustment ring is installed in the inner cavity of screwdriver shell and is attached with the end face of control convex body, connection key is inserted into connection hole to make torque adjustment ring and control convex body be connected, and the both sides of screwdriver shell are provided with heat dissipation window, the heat dissipation window is hollow structure and is formed with several reinforcing ribs inside heat dissipation window, rotor assembly is installed inside screwdriver shell, first aperture is opened in the side of screwdriver shell, and limit convex body is formed in the screwdriver shell of first aperture inboard, limit ring is formed on rotor shaft, limit ring is attached with limit convex body inboard and bit is extended first aperture.The utility model has the advantages of stable adjusting mechanism, good heat dissipation effect.

Description

Technical Field

[0001] This utility model belongs to the field of screwdriver technology and relates to an electric screwdriver. Background Technology

[0002] An electric screwdriver is a power tool that converts electrical energy into mechanical energy to tighten and loosen screws and nuts. This tool has significant advantages: high precision, which can accurately control the tightness of screws and ensure the quality of product assembly; and high efficiency, which greatly shortens the operation time and improves work efficiency, making it an indispensable tool in the assembly industry.

[0003] Chinese patent publication number CN218698270U discloses an adjustable-length electric screwdriver, including an electric screwdriver body, a strap at the top of the electric screwdriver body, a connecting rod snapped into the inner wall of the electric screwdriver body, a cutting head at one end of the connecting rod, an adjustment mechanism fixedly connected to the inner wall of the connecting rod, the adjustment mechanism including an adjustment rod, a limit button and a spring, two limit buttons and two springs, two springs respectively fixedly connected to the inner wall of the adjustment rod, one end of the limit button near the spring fixedly connected to the spring, the other end of the limit button extending to the outside of the connecting rod, the inner wall of the adjustment rod threadedly connected to the surface of the cutting head, a connecting frame fixedly connected to the top of the electric screwdriver body, and a limit rod fixedly connected to the inner wall of the connecting frame.

[0004] In the adjustable-length electric screwdriver provided by this patent, the limit button in the adjustment mechanism relies on a spring connected to the inner wall of the adjustment rod to achieve the limit function. However, after long-term use, the spring may experience fatigue, resulting in weakened elasticity or failure. This would prevent the limit button from reliably fixing the position of the adjustment rod, affecting the accuracy and stability of the electric screwdriver's length adjustment. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by providing an electric screwdriver.

[0006] The objective of this utility model can be achieved through the following technical solution: An electric screwdriver includes a screwdriver housing, a torque adjusting ring, a rotor assembly, and a wire coiling sleeve. The screwdriver housing is cylindrical in shape and has an internal cavity structure. A torque adjusting window and a switch mounting window are provided on the upper side of the screwdriver housing. A sliding switch plate is fixedly connected to the switch mounting window. A control protrusion is fixedly installed inside the screwdriver housing on one side of the torque adjusting window. A connecting hole is provided in the control protrusion. A connecting key is formed on the end face of the torque adjusting ring. The torque adjusting ring is installed on the screwdriver housing. The screwdriver housing is located inside the cavity and fits against the end face of the control protrusion. The connecting key extends into the connecting hole to connect the torque adjusting ring with the control protrusion. Heat dissipation windows are provided on both sides of the screwdriver housing. The heat dissipation windows have a hollow structure and several reinforcing ribs are formed inside the heat dissipation windows. The rotor assembly is installed inside the screwdriver housing. The rotor assembly includes a rotor body, a rotor shaft, and a screwdriver bit. A first opening is provided on one side of the screwdriver housing. A limiting protrusion is formed in the screwdriver housing inside the first opening. A limiting ring is formed on the rotor shaft. The limiting ring fits against the inner side of the limiting protrusion and the screwdriver bit extends out of the first opening.

[0007] In the aforementioned electric screwdriver, a second opening is provided on one side of the screwdriver housing, and the wire coil sleeve is connected to the second opening.

[0008] In the aforementioned electric screwdriver, heat dissipation grooves are provided on both sides of the screwdriver housing, and several heat dissipation ribs are formed in the heat dissipation grooves.

[0009] In the aforementioned electric screwdriver, a first gripping auxiliary groove is provided on the upper outer side of the screwdriver housing, and a second gripping auxiliary groove is provided on the lower side of the screwdriver housing.

[0010] In the aforementioned electric screwdriver, several protective baffles are formed in the screwdriver housing inside the heat dissipation window.

[0011] Compared with the prior art, the electric screwdriver provided by this utility model has the following beneficial effects: 1. The torque adjustment ring is connected to the connecting hole of the control protrusion inside the screwdriver housing through the connecting key on the end face, and the torque adjustment ring fits snugly against the end face of the control protrusion. This structural design ensures that the torque adjustment ring is accurately positioned and firmly connected during adjustment, avoiding shaking or misalignment during adjustment, and improving the stability and accuracy of torque adjustment. At the same time, the torque adjustment window opened at the upper end of the screwdriver housing provides a convenient operating space for torque adjustment, making it easy for users to quickly adjust the required torque; 2. The sub-housing is equipped with heat dissipation windows and heat dissipation slots on both sides: the heat dissipation windows are hollow structures, which can directly promote the air circulation between the inside of the housing and the outside, and quickly remove the heat generated by the motor; the heat dissipation slots have several heat dissipation fins, which increase the heat dissipation area of ​​the housing, further improve the heat dissipation efficiency, and effectively avoid the impact of overheating on the service life of the equipment; 3. The limiting ring on the rotor shaft fits with the limiting protrusion on the inner side of the first opening, forming an axial limiting structure for the rotor shaft, which can effectively limit the axial movement of the rotor assembly during operation, ensure the stability of the bit after it extends out of the first opening, and improve the accuracy of operations such as screwing. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the screwdriver housing structure;

[0015] Figure 4 This is a schematic diagram of the screwdriver casing from another angle.

[0016] In the diagram: 1. Screwdriver housing; 11. Torque adjustment window; 12. Switch mounting window; 13. Control protrusion; 131. Connecting hole; 14. Heat dissipation window; 141. Protective baffle; 15. Reinforcing rib; 16. First opening; 161. Limiting protrusion; 17. Second opening; 18. Heat dissipation groove; 181. Heat dissipation rib; 19. First gripping auxiliary groove; 10. Second gripping auxiliary groove; 2. Torque adjustment ring; 21. Connecting key; 3. Rotor assembly; 31. Rotor body; 32. Rotor shaft; 321. Limiting ring; 33. Screwdriver bit; 4. Wire coil sleeve; 5. Sliding switch plate. Detailed Implementation

[0017] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0018] like Figures 1 to 4As shown, this embodiment includes a screwdriver housing 1. The screwdriver housing 1 is cylindrical in shape and has a hollow structure inside, providing sufficient space for the installation of various components. A torque adjustment window 11 and a switch mounting window 12 are provided on the upper side of the screwdriver housing 1. A sliding switch plate 5 is fixedly connected in the switch mounting window 12. The start and stop of this embodiment can be conveniently controlled by sliding the sliding switch plate 5.

[0019] like Figures 1 to 4 As shown, a control protrusion 13 is fixedly installed inside the screwdriver housing 1 on one side of the torque adjustment window 11. A connection hole 131 is provided in the control protrusion 13. A connection key 21 is formed on the end face of the torque adjustment ring 2. The torque adjustment ring 2 is installed in the inner cavity of the screwdriver housing 1 and fits against the end face of the control protrusion 13. The connection key 21 extends into the connection hole 131, realizing a stable connection between the torque adjustment ring 2 and the control protrusion 13, which facilitates precise torque adjustment. The torque adjustment ring 2 has a cylindrical structure and extends out of the torque adjustment window 11.

[0020] like Figures 1 to 4 As shown, the screwdriver housing 1 has heat dissipation windows 14 on both sides. The heat dissipation windows 14 have a hollow structure, which can effectively promote the dissipation of internal heat. Several reinforcing ribs 15 are formed inside the heat dissipation windows 14, which enhances the structural strength of the screwdriver housing 1. Several protective baffles 141 are formed in the screwdriver housing 1 inside the heat dissipation windows 14, which can prevent external debris from entering the interior.

[0021] like Figures 1 to 4 As shown, the rotor assembly 3 is installed inside the screwdriver housing 1. The rotor assembly 3 includes a rotor body 31, a rotor shaft 32, and a screwdriver bit 33. A first opening 16 is provided on one side of the screwdriver housing 1. A limiting protrusion 161 is formed in the screwdriver housing 1 inside the first opening 16. A limiting ring 321 is formed on the rotor shaft 32. The limiting ring 321 fits against the inner side of the limiting protrusion 161 and the screwdriver bit 33 extends out of the first opening 16, ensuring the stability of the rotor assembly 3 during operation.

[0022] To elaborate further, such as Figures 1 to 4 As shown, a second opening 17 is provided on one side of the screwdriver housing 1, and the wire coiling sleeve 4 is connected to the second opening 17, which plays a good role in protecting and coiling the wire.

[0023] To elaborate further, such as Figures 1 to 4 As shown, heat dissipation grooves 18 are provided on both sides of the screwdriver housing 1, and several heat dissipation ribs 181 are formed in the heat dissipation grooves 18 to further improve the heat dissipation effect.

[0024] To elaborate further, such as Figures 1 to 4 As shown, a first grip auxiliary groove 19 is provided on the upper outer side of the screwdriver housing 1, and a second grip auxiliary groove 10 is provided on the lower side of the screwdriver housing 1, which conforms to the ergonomic design and makes it easy for the operator to hold comfortably.

[0025] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0026] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. An electric screwdriver, comprising a screwdriver housing (1), a torque adjusting ring (2), a rotor assembly (3), and a wire coil sleeve (4), characterized in that: The screwdriver housing (1) is cylindrical in shape and has a hollow interior. A torque adjustment window (11) and a switch mounting window (12) are provided on the upper side of the screwdriver housing (1). A sliding switch plate (5) is fixedly connected to the switch mounting window (12). A control protrusion (13) is fixedly installed inside the screwdriver housing (1) on one side of the torque adjustment window (11). A connecting hole (131) is provided in the control protrusion (13). A connecting key (21) is formed on the end face of the torque adjustment ring (2). The torque adjustment ring (2) is installed in the cavity of the screwdriver housing (1) and fits against the end face of the control protrusion (13). The connecting key (21) extends into the connecting hole (131) to connect the torque adjustment ring (2) with the control protrusion. (13) Connected to each other, the screwdriver housing (1) has heat dissipation windows (14) on both sides, the heat dissipation windows (14) are hollow structures and a number of reinforcing ribs (15) are formed inside the heat dissipation windows (14), the rotor assembly (3) is installed inside the screwdriver housing (1), the rotor assembly (3) includes a rotor body (31), a rotor shaft (32) and a bit (33), the screwdriver housing (1) has a first opening (16) on one side, a limiting protrusion (161) is formed in the screwdriver housing (1) inside the first opening (16), a limiting ring (321) is formed on the rotor shaft (32), the limiting ring (321) is in contact with the inner side of the limiting protrusion (161) and the bit (33) extends out of the first opening (16).

2. The electric screwdriver according to claim 1, characterized in that: The screwdriver housing (1) has a second opening (17) on one side, and the wire coil sleeve (4) is connected to the second opening (17).

3. The electric screwdriver according to claim 1, characterized in that: The screwdriver housing (1) has heat dissipation grooves (18) on both sides, and a plurality of heat dissipation ribs (181) are formed in the heat dissipation grooves (18).

4. An electric screwdriver according to claim 1, characterized in that: The screwdriver housing (1) has a first gripping auxiliary groove (19) on the upper outer side and a second gripping auxiliary groove (10) on the lower side.

5. An electric screwdriver according to claim 1, characterized in that: Several protective baffles (141) are formed in the screwdriver housing (1) inside the heat dissipation window (14).

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