An electric screwdriver

Abstract

This invention relates to the field of electric screwdriver technology and discloses an electric screwdriver, including a housing. Two opposing, engaging ends are fixedly connected to the end of the housing, forming an adjustment groove between the two ends. A main shaft is located inside each of the two ends and is locked in place by male and female locking screws. Two gear discs are sleeved on one side of the main shaft, and a mounting hole is provided on one side of the main shaft, with a connector inside the mounting hole. This invention uses a drive assembly to cause a tapered column to rotate the screwdriver bit via connecting teeth one, the gear discs, and connecting teeth two, thus enabling the connector to rotate and perform a tightening operation. Simultaneously, a pressing assembly moves the tapered column inward, disengaging connecting teeth one from the gear discs, rotating the main shaft to a suitable position. A spring two then re-engages connecting teeth one with the gear discs, thereby adjusting and fixing the screwdriver bit angle. The adjustment is convenient, and the small size allows it to adapt to narrow spaces.

Description

Technical Field

[0001] This invention relates to the field of electric screwdriver technology, specifically to an electric screwdriver. Background Technology

[0002] In order to maintain product quality, electric screwdrivers are usually used as assembly tools in the assembly station during the manufacturing process of electronic products. Electric screwdrivers can control the torque output of the driver through the control module to ensure that the tightening force is the same every time. Therefore, electric screwdrivers play a vital role in the entire product manufacturing process.

[0003] A search revealed Chinese patent CN213225961U, which discloses an electric screwdriver comprising a screwdriver head and a main body. The main body includes a driver, an angle detection element, a torque detection element, and a controller. However, conventional electric screwdrivers still suffer from the following drawbacks: most conventional electric screwdrivers are fixed in a vertical or 90-degree orientation, or some can switch between both orientations, but the resulting size is too large and long, making them unsuitable for confined spaces. Furthermore, conventional electric screwdrivers offer a limited grip, making it difficult to adjust for optimal comfort and effort-saving in many usage scenarios. To address these shortcomings, this invention provides a compact electric screwdriver with an angle adjustable from 0 to 90 degrees, offering a superior grip. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides an electric screwdriver, primarily to solve the problems that most conventional electric screwdrivers are fixed in a vertical or 90-degree shape, or while some products can switch between the two shapes, they are too large and long after switching, making them unsuitable for use in confined spaces. Furthermore, conventional electric screwdrivers have a limited grip, making it difficult to adjust to the optimal grip and effort-saving state in many usage scenarios.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An electric screwdriver includes a housing with two opposing engaging ends fixedly connected to its end. An adjustment groove is formed between the two ends. A spindle is provided inside each of the two ends and is locked in place by a male-to-female locking screw. Two gear discs are sleeved on one side of the spindle, and a mounting hole is provided on one side of the spindle. A connector is provided in the mounting hole, and a second connecting tooth is provided on the outer circumference of the connector to mesh with the two gear discs. A bit is detachably connected to one end of the connector. A retaining ring is engaged between the two ends, and a conical column is inserted into the retaining ring. A first connecting tooth is provided at one end of the conical column to mesh with the two gear discs. A second spring is provided on one side of the conical column and contacts the end. A drive assembly for rotating the conical column is provided inside the housing. A pressing assembly for disengaging the first connecting tooth from the gear discs is provided inside each of the two ends. A sensing assembly for identifying the rotation position of the spindle is provided inside each end.

[0009] Furthermore, the drive assembly includes a gearbox, which is fixedly connected inside the housing. The gearbox is connected to a connecting keyway. A motor is fixedly connected inside the housing, and one end of the motor output shaft is drivenly connected to the gearbox. A mounting shell is fixedly connected inside the housing, and a battery that provides power to the motor is installed inside the mounting shell.

[0010] Based on the aforementioned scheme, the extrusion assembly includes two adjustment buttons, which are respectively located inside the two ends. The adjustment buttons move up and down along the inside of the ends. The bottom ends of the two adjustment buttons are fixedly connected to extrusion columns, and the extrusion columns are in contact with the conical surfaces of the conical columns.

[0011] As a further embodiment of the present invention, the sensing component includes a spring, which is fixedly connected to the inside of the end, and a retaining bead is fixedly connected to the other end of the spring. A plurality of arc-shaped slots are provided on one side of the main shaft, which can engage with the retaining bead. The plurality of arc-shaped slots are distributed at 0°, 45° and 90° positions.

[0012] Furthermore, a first shielding ring and a second shielding ring are provided between the end and the main shaft. The first shielding ring is located inside the second shielding ring. Both the first shielding ring and the second shielding ring are provided with an oblong groove to avoid the connector. The oblong grooves of the first shielding ring and the second shielding ring can overlap to shield.

[0013] Based on the aforementioned scheme, the outer circumferential wall of the second shielding ring has two arc-shaped slots, and the inside of the end is fixedly connected to a spring, and the other end of the spring is fixedly connected to a bead that can engage with the arc-shaped slot.

[0014] As a further embodiment of the present invention, a first lighting lamp and a second lighting lamp are provided between the two ends, and the first lighting lamp and the second lighting lamp are distributed at 90°.

[0015] Furthermore, the housing is equipped with a torque control circuit board, which is electrically connected to the motor, and the top of the housing is equipped with a torque button for controlling the torque control circuit board.

[0016] Based on the aforementioned solution, the housing is provided with a forward and reverse control circuit board, which is electrically connected to the motor, and the top of the housing is provided with a forward and reverse button to control the forward and reverse control circuit board.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the present invention provides an electric screwdriver with the following advantages:

[0019] 1. This invention uses a drive assembly to make the cone column rotate and perform a screwdriver bit rotation via connecting teeth one, a toothed disc, and connecting teeth two. At the same time, the extrusion assembly can move the cone column inward and disengage connecting teeth one from the toothed disc, rotate the spindle to a suitable position, and use spring two to re-engage connecting teeth one with the toothed disc, thereby adjusting and fixing the angle of the screwdriver bit. The adjustment is convenient, and the small size can adapt to narrow spaces.

[0020] 2. The present invention achieves power transmission by starting a motor, which drives a reduction gearbox to reduce speed. The reduction gearbox then drives a conical column to rotate through the meshing of a keyway and connecting key teeth.

[0021] 3. This invention allows the extrusion column to move inward by pressing the adjustment button, thereby causing the end of the extrusion column to move inward along the conical surface of the cone column and extrude force into the cone column, thus moving the cone column inward. The operation is simple and quick.

[0022] 4. This invention rotates the spindle and uses a spring to make the retaining ball engage with the multiple arc-shaped slots on the spindle, so that the spindle is sensed when it rotates to 45° and 90°, effectively improving the user's feel when adjusting the angle.

[0023] 5. This invention uses the cooperation of shielding ring one and shielding ring two to shield the main shaft, thereby improving the aesthetics of the electric screwdriver. Furthermore, the arc-shaped slot one is softly engaged and fixed by spring three and retaining ball two, so that when the main shaft drives the connector to rotate, shielding ring one rotates first and then shielding ring two rotates, thus allowing the oblong slots of shielding ring one and shielding ring two to overlap and shield each other. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the front three-dimensional structure of an electric screwdriver proposed in this invention;

[0025] Figure 2 This is a three-dimensional exploded view of an electric screwdriver proposed in this invention;

[0026] Figure 3 This is an exploded left-side structural diagram of the tip of an electric screwdriver proposed in this invention;

[0027] Figure 4 This is an exploded right-side structural diagram of the tip of an electric screwdriver proposed in this invention;

[0028] Figure 5 This is a partially enlarged structural schematic diagram of an electric screwdriver proposed in this invention;

[0029] Figure 6 This is an enlarged schematic diagram of the toothed disc structure of an electric screwdriver proposed in this invention;

[0030] Figure 7 This is a partially exploded structural diagram of an electric screwdriver proposed in this invention.

[0031] In the diagram: 1. Adjustment button; 2. End; 3. Connector; 4. Screwdriver bit; 5. Adjustment slot; 6. Forward / reverse button; 7. Housing; 8. Torque button; 9. Gearbox; 10. Motor; 11. Battery; 12. Torque control circuit board; 13. Mounting housing; 14. Forward / reverse control circuit board; 15. Spring 1; 16. Clamping ball 1; 17. Shielding ring 1; 18. Shielding ring 2; 19. Illumination lamp 1; 20. Tapered column; 21. Spring 2; 22. Extrusion column; 23. Connecting key; 24. Fixing ring; 25. Arc-shaped slot hole 1; 26. Spring 3; 27. Illumination lamp 2; 28. Clamping ball 2; 29. ​​Arc-shaped slot hole 2; 30. Connecting tooth 1; 31. Spindle; 32. Gear plate; 33. Connecting tooth 2; 34. Male locking screw; 35. Female locking screw; 36. Mounting hole. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Reference Figures 1-7An electric screwdriver includes a housing 7. Two opposing, engaging ends 2 are bolted to the end of the housing 7, forming an adjustment groove 5 between the two ends 2. A spindle 31 is located inside each end 2 and is locked in place by a male locking screw 34 and a female locking screw 35. Two gear discs 32 are sleeved on one side of the spindle 31. A mounting hole 36 is provided on one side of the spindle 31, and a connector 3 is located within the mounting hole 36. The outer circumference of the connector 3 has connecting teeth 33 that mesh with the two gear discs 32. A screwdriver bit 4 is detachably connected to one end of the connector 3. A retaining ring 24 is engaged between the two ends 2, and a conical column 20 is inserted into the retaining ring 24. One end of the conical column 20 has connecting teeth 30 that mesh with the two gear discs 32. A spring 21 is located on one side of the conical column 20 and contacts the end 2. A drive assembly for rotating the conical column 20 is located inside the housing 7. Both ends 2 are equipped with a pressing component inside to disengage the connecting tooth 30 from the toothed disc 32. The end 2 is also equipped with a sensing component to identify the rotational position of the main shaft 31. The driving component causes the cone 20 to rotate around the main shaft 31 via the connecting tooth 30. The rotation of the toothed disc 32 causes the connecting head 3 to rotate the bit 4 via the connecting tooth 33 and perform a screwing operation. When the knob angle of the bit 4 needs to be adjusted, the pressing component causes the cone 20 to move inward and disengage the connecting tooth 30 from the toothed disc 32, thus putting the toothed disc 32 and the main shaft 31 in a rotatable state. Then, by rotating the main shaft 31 to the appropriate position, the spring 21 causes the cone 20 to move outward to reset and re-engage the connecting tooth 30 with the toothed disc 32, thereby adjusting and fixing the angle of the bit 4. The adjustment is convenient and the small size allows it to adapt to narrow spaces.

[0034] In this invention, the drive assembly includes a reduction gearbox 9, which is bolted to the inside of the housing 7. The reduction gearbox 9 is keyed to the connecting key 23. A motor 10 is bolted to the inside of the housing 7, and one end of the output shaft of the motor 10 is connected to the reduction gearbox 9 for transmission. A mounting shell 13 is bolted to the inside of the housing 7, and a battery 11 that provides power to the motor 10 is provided inside the mounting shell 13. When the motor 10 is started, the motor 10 rotates and drives the reduction gearbox 9 to decelerate. Then, the reduction gearbox 9 drives the conical column 20 to rotate through the keyway and the connecting key 23, thereby realizing power transmission.

[0035] In this invention, the extrusion assembly includes two adjustment buttons 1, which are respectively located inside two ends 2. The adjustment buttons 1 move up and down along the inside of the ends 2. An extrusion column 22 is attached to the bottom of each adjustment button 1, and the extrusion column 22 contacts the conical surface of the conical column 20. By pressing the adjustment button 1, the adjustment button 1 drives the extrusion column 22 to move inward, thereby causing the end of the extrusion column 22 to move inward along the conical surface of the conical column 20 and extrude pressure on the conical column 20, thus causing the conical column 20 to move inward. The operation is simple and quick. The sensing assembly includes... Spring 15 is glued to the inside of end 2. The other end of spring 15 is glued to a retaining bead 16. One side of the main shaft 31 is provided with multiple arc-shaped slots 29 that can engage with retaining beads 16. The multiple arc-shaped slots 29 are distributed at 0°, 45° and 90° positions. By rotating the main shaft 31, the retaining bead 16 is softly engaged with the multiple arc-shaped slots 29 on the main shaft 31 by spring 15, so that the main shaft 31 is sensed when it is rotated to 45° and 90°, which effectively improves the user's feel when adjusting the angle.

[0036] In this invention, a first shielding ring 17 and a second shielding ring 18 are provided between the end 2 and the main shaft 31. The first shielding ring 17 is located inside the second shielding ring 18. Both the first shielding ring 17 and the second shielding ring 18 are provided with an oblong groove to avoid obstructing the connector 3. The oblong grooves of the first shielding ring 17 and the second shielding ring 18 can overlap and block each other. Two arc-shaped slots 25 are formed on the outer circumference of the second shielding ring 18. A third spring 26 is bonded to the inside of the end 2. The other end of the third spring 26 is bonded with an arc-shaped slot 25. The locking ball 28, which engages with the slot 25, blocks the spindle 31 through the cooperation of the blocking ring 17 and the blocking ring 28, thereby improving the aesthetics of the electric screwdriver. The spring 36 and the locking ball 28 softly lock and fix the arc-shaped slot 25, so that when the spindle 31 drives the connector 3 to rotate, it can first drive the blocking ring 17 to rotate and then drive the blocking ring 28 to rotate, so that the oval slots of the blocking ring 17 and the blocking ring 28 can overlap and block each other.

[0037] In this invention, a first lighting lamp 19 and a second lighting lamp 27 are provided between the two ends 2. The first lighting lamp 19 and the second lighting lamp 27 are distributed at 90°, so that the electric screwdriver can provide a wider range of illumination when performing screwing operations and can adapt to different positions of the screwdriver bit 4.

[0038] In this invention, the housing 7 has a torque control circuit board 12 inside, which is electrically connected to the motor 10. The top of the housing 7 has a torque button 8 for controlling the torque control circuit board 12. The housing 7 also has a forward / reverse control circuit board 14 inside, which is electrically connected to the motor 10. The top of the housing 7 has a forward / reverse button 6 for controlling the forward / reverse control circuit board 14, thereby improving the functionality of the electric screwdriver when performing screwing operations.

[0039] The working principle of this embodiment is as follows: When in use, starting the motor 10 causes it to rotate, driving the reduction gearbox 9 to reduce speed. The reduction gearbox 9 then drives the conical column 20 to rotate via the keyway and connecting key teeth 23, thus achieving power transmission. The rotation of the conical column 20 then drives the gear disc 32 to rotate around the main shaft 31 via connecting key teeth 30. The rotation of the gear disc 32, in turn, drives the connecting head 3 to rotate the bit 4 via connecting key teeth 33, performing a tightening operation. When the knob angle of the bit 4 needs adjustment, pressing the adjustment button 1 moves the pressing column 22 inward, causing its end to move inward along the conical surface of the conical column 20 and press against it. This inward movement of the conical column 20 disengages the connecting key teeth 30 from the gear disc 32, allowing the gear disc 32 and the main shaft 31 to rotate. Then, by rotating the main shaft 31 to the appropriate position, the spring 2... 1. The tapered column 20 is moved outward to reset, and the connecting tooth 30 is re-engaged with the toothed disc 32, thereby adjusting and fixing the angle of the bit 4. The adjustment is convenient, and the small size can adapt to narrow spaces. At the same time, by rotating the spindle 31, the spring 15 causes the retaining ball 16 to softly engage with the multiple arc-shaped slots 29 opened on the spindle 31, so that the spindle 31 is sensed when rotating to 45° and 90°, effectively improving the user's feel when adjusting the angle. At the same time, the cooperation of the shielding ring 17 and the shielding ring 28 shields the spindle 31, thereby improving the aesthetics of the electric screwdriver. The spring 36 and the retaining ball 28 softly engage and fix the arc-shaped slot 25, so that when the spindle 31 drives the connector 3 to rotate, it can first drive the shielding ring 17 to rotate and then drive the shielding ring 28 to rotate, so that the oval slots of the shielding ring 17 and the shielding ring 28 overlap and shield each other.

[0040] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0041] In the description herein, it should be noted that relational terms such as "first" and "second" are used merely 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.

[0042] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric screwdriver, comprising a housing (7), characterized in that, The end of the housing (7) is fixedly connected to two opposing engaging end heads (2), forming an adjustment groove (5) between the two end heads (2). A main shaft (31) is provided inside the two end heads (2), and the main shaft (31) is locked by a male locking screw (34) and a female locking screw (35). Two gear discs (32) are sleeved on one side of the main shaft (31), and a mounting hole (36) is provided on one side of the main shaft (31). A connector (3) is provided in the mounting hole (36), and a connecting tooth (3) is provided on the outer circumference of the connector (3). Connecting teeth (33) that mesh with the two gear discs (32) are provided on the outer circumference of the connector (3). A screwdriver bit (4) is detachably connected to one end of the connector (3). A retaining ring (24) is engaged between the two ends (2), and a conical column (20) is inserted into the retaining ring (24). One end of the conical column (20) is provided with a connecting tooth (30) that meshes with the two gear discs (32). A spring (21) is provided on one side of the conical column (20), and the spring (21) is in contact with the end (2). The housing (7) is provided with a drive assembly for rotating the conical column (20). Both ends (2) are provided with a pressing assembly for disengaging the connecting tooth (30) from the gear discs (32). The end (2) is provided with a sensing assembly for identifying the rotation position of the main shaft (31).

2. The electric screwdriver according to claim 1, characterized in that, The drive assembly includes a gearbox (9), which is fixedly connected inside the housing (7). The gearbox (9) is keyed to the connecting key (23). A motor (10) is fixedly connected inside the housing (7), and one end of the output shaft of the motor (10) is connected to the gearbox (9) for transmission. A mounting shell (13) is fixedly connected inside the housing (7), and a battery (11) that provides power to the motor (10) is provided inside the mounting shell (13).

3. The electric screwdriver according to claim 1, characterized in that, The extrusion assembly includes two adjustment buttons (1), which are respectively located inside the two ends (2). The adjustment buttons (1) move up and down along the inside of the ends (2). The bottom ends of the two adjustment buttons (1) are fixedly connected to extrusion columns (22), and the extrusion columns (22) are in contact with the conical surface of the conical column (20).

4. An electric screwdriver according to claim 1, characterized in that, The sensing component includes a spring (15), which is fixedly connected to the inside of the end (2). The other end of the spring (15) is fixedly connected to a retaining bead (16). The main shaft (31) has multiple arc-shaped slots (29) on one side that can engage with the retaining bead (16). The multiple arc-shaped slots (29) are distributed at 0°, 45° and 90° positions.

5. An electric screwdriver according to claim 1, characterized in that, A first shielding ring (17) and a second shielding ring (18) are provided between the end (2) and the main shaft (31). The first shielding ring (17) is located inside the second shielding ring (18). Both the first shielding ring (17) and the second shielding ring (18) are provided with an oval slot to avoid the connector (3). The oval slots of the first shielding ring (17) and the second shielding ring (18) can overlap to shield.

6. An electric screwdriver according to claim 5, characterized in that, The outer circumferential wall of the second shielding ring (18) has two arc-shaped slots (25), and the end (2) is fixedly connected to a spring (26). The other end of the spring (26) is fixedly connected to a bead (28) that can engage with the arc-shaped slot (25).

7. An electric screwdriver according to claim 1, characterized in that, A first lighting lamp (19) and a second lighting lamp (27) are provided between the two ends (2), and the first lighting lamp (19) and the second lighting lamp (27) are distributed at 90°.

8. An electric screwdriver according to claim 2, characterized in that, The housing (7) is provided with a torque control circuit board (12) inside, which is electrically connected to the motor (10). The top of the housing (7) is provided with a torque button (8) for controlling the torque control circuit board (12).

9. An electric screwdriver according to claim 2, characterized in that, The housing (7) is provided with a forward and reverse control circuit board (14) inside, which is electrically connected to the motor (10). The top of the housing (7) is provided with a forward and reverse button (6) for controlling the forward and reverse control circuit board (14).

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