Electric screwdriver

Abstract

The utility model discloses an electric screwdriver which comprises a machine shell, a rear cover and a head shell, the machine shell is integrally divided into an upper part and a lower part, the tail of the machine shell of the upper part is connected with the rear cover, the front end of the machine shell of the upper part is connected with the head shell, an inner ring of the head shell is connected with a striking block assembly in an abutting mode through an O-shaped ring, and the front end of the striking block assembly is connected with an output shaft. An output shaft sequentially penetrates through a second parallel pad, a shaft sleeve, a quick-change sleeve, a spring and a first parallel pad and is connected with a steel wire clamp spring, a steel pin is arranged at one end of a striking block assembly, a planetary gear is connected to the steel pin, an outer ring of the planetary gear is connected with an inner gear ring in a meshed mode, and an outer ring of the inner gear ring is connected with a middle cover in a matched mode. An inner ring of the motor stator assembly is connected with the rotor in a matched mode, motor teeth are arranged at the front end of the rotor driving shaft and connected with the planetary gear in a meshed mode, the electric screwdriver is more reasonable and simpler in structural design, meanwhile, due to the reasonable and simple structural design, faults can be better reduced, and stability performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware tools, in particular to an electric screwdriver. Background Art

[0002] An electric screwdriver, also known as an electric screwdriver or an electric screwdriver, is an electric tool that uses electricity to drive the motor to rotate, thereby quickly tightening or removing screws. Compared with traditional manual screwdrivers, it significantly improves work efficiency and reduces labor intensity, especially in mass production and precision assembly operations. The existing electric screwdriver structure design is very complex and there is still room for improvement and optimization. At the same time, due to the excessive number of internal components, the stability is poor, and failures are prone to occur during the work process, affecting the continuation of the work. Utility Model Content

[0003] In order to solve the above problems, the utility model provides an electric screwdriver.

[0004] The utility model adopts the following technical solutions:

[0005] An electric screwdriver comprises a casing, a rear cover and a head casing, wherein the casing is connected by left and right shells through a cross screw, and the casing as a whole is in upper and lower parts, wherein the tail of the casing of the upper part is connected to the rear cover through a cross screw, and the front end of the casing of the upper part is connected to the head casing through a hexagon socket screw, and the inner ring of the head casing is connected to a striking block assembly through an O-ring, and the front end of the striking block assembly is connected to an output shaft, and the output shaft passes through parallel pad 2, a sleeve, a quick-change sleeve, a spring, and parallel pad 1 in sequence and is connected to a wire retaining spring, and steel pins are symmetrically arranged at one end of the striking block assembly away from the output shaft, and planetary gears are connected to the steel pins, and the outer ring of the planetary gear is meshed with an inner gear ring, and the outer ring of the inner gear ring is matched with an intermediate cover, and a motor stator assembly is arranged inside the casing of the upper part, and the inner ring of the motor stator assembly is matched with a rotor, and the front end of the rotor drive shaft is provided with motor teeth, and the motor teeth are meshed with planetary gears, and a switch is arranged inside the casing of the lower part, and a pin is arranged below the switch.

[0006] As a preferred technical solution of the utility model, the inner ring of the quick-change sleeve abuts against the outer ring of the spring, and one end of the quick-change sleeve abuts against one end of the shaft sleeve.

[0007] As a preferred technical solution of the utility model, the middle cover is in a triangular raised shape, and parallel pads and bearings are respectively arranged inside the raised part of the middle cover.

[0008] As a preferred technical solution of the utility model, the switch is electrically connected to the lighting lamp beads and the power display light board, and the lighting lamp beads are wrapped by a transparent lampshade.

[0009] As a preferred technical solution of the utility model, a forward and reverse push knob is arranged above the switch.

[0010] As a preferred technical solution of the utility model, a rear cover decorative buckle is arranged on the rear cover, and a technical nameplate buckle is arranged on the side of the housing.

[0011] The beneficial effects of the utility model are:

[0012] The electric screwdriver of the utility model has a more reasonable and simple structural design, and the reasonable and simple structural design can reduce the occurrence of failures and improve the stability performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is an exploded view of the electric screwdriver of the utility model;

[0014] Figure 2 This is the front view of the casing of the electric screwdriver of the utility model;

[0015] Figure 3 This is a structural connection diagram of the stator assembly of the electric screwdriver motor of the utility model;

[0016] Figure 4 This is a front view of the rotor of the electric screwdriver of the utility model.

[0017] Explanation of symbols in the figure:

[0018] 1: Steel wire retaining spring, 2: Flat washer one, 3: Spring, 4: Quick change sleeve, 5 Hexagon socket screw, 6: Head shell, 7: O-ring, 8: Bushing, 9: Flat washer two, 10: Casing, 11: Output shaft, 12: Strike block assembly, 13: Steel pin, 14: Planetary gear, 15: Inner ring gear, 16: Flat washer three, 17: Bearing, 18: Middle cover, 19: Motor teeth, 20: Motor stator assembly, 21: Rotor, 22: Back cover, 23: Cross screw, 24: Back cover decorative buckle, 25: Technical nameplate buckle, 26: Transparent lampshade, 27: Lighting lamp beads, 28: Power display light board, 29: Forward and reverse dial, 30: Switch, 31: Pin. DETAILED DESCRIPTION

[0019] The utility model is now described in further detail with reference to the accompanying drawings.

[0020] In the embodiments, it should be understood that the terms "middle", "upper", "lower", "top", "bottom", "right", "left", "above", "below", "back", "front", "middle", "outside", "inside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments.

[0021] like Figures 1 to 4 As shown, an electric screwdriver comprises a housing 10, a rear cover 22, and a head housing 6. The housing 10 is composed of a left and a right housing connected by a cross screw 23. The housing 10 is composed of an upper and a lower part. The tail of the upper housing 10 is connected to the rear cover 22 by a cross screw 23, and the front end of the upper housing 10 is connected to the head housing 6 by a hexagon socket screw 5. The inner ring of the head housing 6 is connected to the striking block assembly 12 by an O-ring 7. The front end of the striking block assembly 12 is connected to the output shaft 11. The output shaft 11 passes through the parallel washer 2 9, the sleeve 8, the quick-change sleeve 4, the spring 3, the parallel washer 2 and is connected to the wire retaining spring 1. The striking block assembly 12 is symmetrically provided with steel pins 13 at one end away from the output shaft 11, and a planetary gear 14 is connected to the steel pin 13. The outer ring of the planetary gear 14 is meshed with the inner gear ring 15, and the outer ring of the inner gear ring 15 is matched with the middle cover 18. A motor stator assembly 20 is arranged inside the upper casing 10, and the inner ring of the motor stator assembly 20 is matched with the rotor 21. The front end of the rotor 21 driving shaft is provided with motor teeth 19, and the motor teeth 19 are meshed with the planetary gear 14. A switch 30 is arranged inside the lower casing 10, and a pin 31 is arranged below the switch 30.

[0022] Furthermore, the inner ring of the quick-change sleeve 4 abuts against the outer ring of the spring 3 , and one end of the quick-change sleeve 4 abuts against one end of the shaft sleeve 8 .

[0023] Furthermore, the middle cover 18 is in a triangular raised shape, and a parallel washer 16 and a bearing 17 are respectively arranged inside the raised portion of the middle cover 18.

[0024] Furthermore, the switch 30 is electrically connected to the lighting lamp bead 27 and the power display light board 28 , and the lighting lamp bead 27 is wrapped by a transparent lampshade 26 .

[0025] Furthermore, a forward and reverse push knob 29 is provided above the switch 30 .

[0026] Furthermore, a rear cover decorative buckle 24 is provided on the rear cover 22 , and a technical nameplate buckle 25 is provided on the side of the housing 10 .

[0027] Finally, it should be noted that these embodiments are only used to illustrate the present invention and do not limit the scope of the present invention. In addition, for those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. The obvious changes or modifications derived from them are still within the scope of protection of the present invention.

Claims

1. An electric screwdriver, comprising a housing (10), a rear cover (22), and a head housing (6), characterized in that: The housing (10) is composed of a left and a right shell connected by a cross screw (23). The housing (10) is composed of an upper and a lower part. The tail of the upper housing (10) is connected to the rear cover (22) by a cross screw (23). The front end of the upper housing (10) is connected to the head housing (6) by a hexagon socket screw (5). The inner ring of the head housing (6) is connected to the striking block assembly (12) by an O-ring (7). The front end of the striking block assembly (12) is connected to the output shaft (11). The output shaft (11) passes through the parallel pad 2 (9), the shaft sleeve (8), the quick-change sleeve (4), the spring (3), the parallel pad 1 (2) and is connected to the wire retaining spring (1). The striking block assembly (1 2) Steel pins (13) are symmetrically arranged at one end away from the output shaft (11), and a planetary gear (14) is connected to the steel pin (13). The outer ring of the planetary gear (14) is meshed with the inner gear ring (15), and the outer ring of the inner gear ring (15) is matched with the middle cover (18). A motor stator assembly (20) is arranged inside the upper housing (10), and the inner ring of the motor stator assembly (20) is matched with the rotor (21). The front end of the drive shaft of the rotor (21) is provided with motor teeth (19), and the motor teeth (19) are meshed with the planetary gear (14). A switch (30) is arranged inside the lower housing (10), and a pin (31) is arranged below the switch (30).

2. The electric screwdriver according to claim 1, characterized in that: The inner ring of the quick-change sleeve (4) abuts against the outer ring of the spring (3), and one end of the quick-change sleeve (4) abuts against one end of the shaft sleeve (8).

3. The electric screwdriver according to claim 1, characterized in that: The middle cover (18) is in the shape of a triangular protrusion, and a parallel pad (16) and a bearing (17) are respectively arranged inside the protrusion of the middle cover (18).

4. The electric screwdriver according to claim 1, characterized in that: The switch (30) is electrically connected to the lighting lamp bead (27) and the power display lamp board (28), and the lighting lamp bead (27) is wrapped by a transparent lamp cover (26).

5. The electric screwdriver according to claim 4, characterized in that: A forward and reverse push knob (29) is arranged above the switch (30).

6. The electric screwdriver according to claim 1, characterized in that: The rear cover (22) is provided with a rear cover decorative buckle (24), and the side surface of the housing (10) is provided with a technical nameplate buckle (25).

Images