Electric drill with anti-twisting structure

Abstract

The utility model discloses an electric drill with an anti-twist structure, which comprises a shell, one end of the shell is connected with a drill rod through an anti-twist component, the anti-twist component comprises a connecting block and a rotating block, the connecting block is rotatably matched with the inner wall of the shell, the drill rod is detachably connected with one end of the connecting block, and the rotating block is connected with the connecting block. And the rotating block is rotationally matched with one side of the drill rod, one side of the rotating block is slidably connected with a plurality of connecting ball heads, one side of the connecting block is provided with connecting grooves matched with the connecting ball heads in a limiting mode, and one side of each connecting ball head is connected with a connecting spring. By arranging the anti-twisting structure, when the drill rod drills a hard object to be clamped and the torque is increased, the connecting block cannot rotate, the driving structure still drives the rotating block to rotate, so that the rotating block and the connecting block rotate relatively, the force of the connecting groove extruding the connecting ball head overcomes the elastic force of the connecting spring, and the connecting ball head shrinks towards the interior of the rotating block; the rotating block and the connecting block rotate relatively, and rotation caused by the fact that the drill rod clamps the shell is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electric drills, in particular to an electric drill with an anti-twist structure. Background Art

[0002] Electric drills are drilling tools that use electricity as power. They are common products among power tools and are also the most in-demand power tool products. They are widely used in the construction and decoration industries, woodworking and furniture manufacturing industries, etc.

[0003] After searching, the Chinese patent publication number CN220497839U discloses an anti-tilt lithium-ion electric drill, including an external connecting sleeve, on which a lithium-ion electric drill body is arranged, a drilling drill bit is arranged at the end of the lithium-ion electric drill body, and a drilling anti-tilt component for preventing drilling tilt is arranged on the external connecting sleeve.

[0004] This patent uses a drilling anti-tilt component to prevent the drilling drill bit set at the end of the lithium-ion electric drill body from remaining straight during the drilling process, effectively preventing the drilling drill bit from tilting during the drilling process. However, during the drilling process, if the drill bit hits a hard object and the drill bit cannot rotate, the torque suddenly increases. If the user cannot grip the electric drill at this time, the electric drill body may rotate, spraining the user's arm or injuring the user. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes an electric drill with an anti-twist structure.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An electric drill with an anti-twist structure comprises a shell, one end of the shell is connected to a drill rod via an anti-twist assembly, the anti-twist assembly comprises a connecting block and a rotating block, the connecting block is rotatably fitted with an inner wall of the shell, the drill rod is detachably connected to one end of the connecting block, the rotating block is rotatably fitted with one side of the drill rod, a driving structure for driving the rotating block to rotate is arranged inside the shell, a plurality of connecting ball heads are slidably connected to one side of the rotating block, a connecting groove which is limitedly fitted with the connecting ball head is provided on one side of the connecting block, the connecting groove is arc-shaped, and a connecting spring is connected to one side of the connecting ball head.

[0008] As a further solution of the utility model: a plurality of adjusting rods are slidably connected to the other side of the rotating block, the adjusting rods are opposite to the connecting ball head, and the other end of the connecting spring is connected to the adjusting rod.

[0009] As a further solution of the utility model: a connecting frame is fixed to the inner wall of the shell, a push plate is laterally slidably connected to one side of the connecting frame, one side of the push plate is in contact with the adjusting rod, and the other side of the connecting frame is rotatably connected to a rotating cylinder, the rotating cylinder is threadedly matched with the connecting frame, and one end of the rotating cylinder is connected to a driven bevel gear.

[0010] As a further solution of the utility model: the top end of the housing is connected to a rotating rod, and the bottom end of the rotating rod is connected to a driving bevel gear that is meshed with a driven bevel gear.

[0011] As a further solution of the utility model: one end of the shell is connected to a connecting plate, both sides of the connecting plate are slidably connected to sliding rods, the other end of the sliding rod is connected to a rotating frame, a return spring is sleeved on the outer side of the sliding rod, and the two ends of the return spring are respectively connected to the connecting plate and the rotating frame.

[0012] As a further solution of the utility model: one end of the rotating frame is rotatably connected to a positioning plate, one side of the positioning plate is provided with a limiting component, the top outer wall of the positioning plate is provided with an angle scale plate, and the rotating shaft of the rotating frame is connected to an angle pointer.

[0013] As a further solution of the utility model: the limiting assembly includes a fixed cylinder and a limiting groove, the fixed cylinder is fixed to the outer wall of one side of the positioning plate, the limiting groove is rotatably connected to the inner wall of the fixed cylinder, and one side of the limiting groove is connected to one end of the rotating shaft of the rotating frame.

[0014] As a further solution of the utility model: the inner wall of the fixed cylinder is slidably connected with a sliding block, one end of the sliding block is connected with a spline, the spline is limitedly matched with the limit groove, one side of the sliding block is connected to a limit spring, and the other end of the limit spring is connected to the inner wall of the fixed cylinder.

[0015] Compared with the prior art, the utility model provides an electric drill with an anti-twist structure, which has the following beneficial effects:

[0016] The utility model is provided with an anti-twist structure, when the drill rod drills into a hard object and the torque increases, the connecting block cannot rotate, because the driving structure still drives the rotating block to rotate, so that the rotating block and the connecting block rotate relatively, the force of the connecting groove squeezing the connecting ball head overcomes the elastic force of the connecting spring, so that the connecting ball head shrinks toward the inside of the rotating block, and the rotating block and the connecting block rotate relatively, thereby preventing the drill rod from getting stuck and the shell from rotating.

[0017] The utility model is provided with an adjusting rod, a pushing plate, a connecting frame, a rotating cylinder, a driven bevel gear, a driving bevel gear and a rotating rod, and the connecting spring can be properly adjusted according to needs to meet the needs of punching.

[0018] The utility model can guide the drilling direction of the drill rod to avoid inclination of the drilling by providing a connecting plate, a sliding rod, a return spring, a rotating frame, a positioning plate, a limit assembly and an angle scale plate, and when the drilling angle is at an angle with the drilling plane, the angle between the rotating frame and the positioning plate can be adjusted.

[0019] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. The utility model has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0022] Figure 3 It is a schematic diagram of the partial structure of the anti-twist component of the utility model.

[0023] Figure 4 It is a structural schematic diagram of the limit assembly of the utility model.

[0024] In the figure: 1. housing; 2. drill rod; 3. connecting block; 4. rotating block; 5. connecting groove; 6. connecting ball head; 7. connecting spring; 8. adjusting rod; 9. pushing plate; 10. connecting frame; 11. rotating cylinder; 12. driven bevel gear; 13. driving bevel gear; 14. rotating rod; 15. connecting plate; 16. sliding rod; 17. reset spring; 18. rotating frame; 19. positioning plate; 20. limiting assembly; 21. angle scale plate; 22. fixed cylinder; 23. limiting groove; 24. sliding block; 25. spline; 26. limiting spring. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention. Embodiment 1:

[0027] An electric drill with an anti-twist structure, such as Figures 1 to 3As shown, it includes a shell 1, one end of the shell 1 is connected to a drill rod 2 through an anti-twist component, the anti-twist component includes a connecting block 3 and a rotating block 4, the connecting block 3 is rotatably matched with the inner wall of the shell 1, the drill rod 2 is detachably connected to one end of the connecting block 3, the rotating block 4 is rotatably matched with one side of the drill rod 2, and a driving structure for driving the rotating block 4 to rotate is arranged inside the shell 1, one side of the rotating block 4 is slidably connected to a plurality of connecting ball heads 6, and the other side of the rotating block 4 is slidably connected to a plurality of adjusting rods 8, the adjusting rods 8 are opposite to the connecting ball heads 6, one side of the connecting block 3 is provided with a connecting groove 5 which is limitedly matched with the connecting ball heads 6, and the connecting groove 5 is arc-shaped, A connecting spring 7 is connected to one side of the connecting ball head 6, and the other end of the connecting spring 7 is connected to the adjusting rod 8. A connecting frame 10 is fixed to the inner wall of the shell 1, and a push plate 9 is connected to one side of the connecting frame 10 for transverse sliding. One side of the push plate 9 is in contact with the adjusting rod 8, and a ball is provided on the end of the adjusting rod 8 in contact with the push plate 9. The other side of the connecting frame 10 is rotatably connected to a rotating cylinder 11, and the rotating cylinder 11 is threadedly matched with the connecting frame 10. One end of the rotating cylinder 11 is connected to a driven bevel gear 12, and a rotating rod 14 is connected to the top of the shell 1, and the bottom end of the rotating rod 14 is connected to an active bevel gear 13 that is meshed with the driven bevel gear 12.

[0028] When in use, the driving structure drives the rotating block 4 to rotate, and the connecting block 3 is driven to rotate through the limiting cooperation between the connecting ball head 6 and the connecting groove 5, so that the drill rod 2 is rotated for drilling. When the drill rod 2 drills into a hard object and the torque increases, the connecting block 3 cannot rotate. Since the driving structure still drives the rotating block 4 to rotate, the rotating block 4 and the connecting block 3 rotate relative to each other. The force of the connecting groove 5 squeezing the connecting ball head 6 overcomes the elastic force of the connecting spring 7, so that the connecting ball head 6 shrinks toward the inside of the rotating block 4, and the rotating block 4 and the connecting block 3 rotate relative to each other to avoid the rotation of the shell 1 due to the drill rod 2 being stuck. When it is necessary to increase the force for the relative rotation of the connecting block 3 and the rotating block 4, the rotating rod 14 is rotated, and the transmission of the active bevel gear 13 and the driven bevel gear 12 drives the rotating cylinder 11 to rotate, so that the push plate 9 moves to one side, pushing the adjusting rod 8, compressing the connecting spring 7, and increasing the force required for the connecting ball head 6 to shrink toward the inside of the rotating block 4.

[0029] By providing an anti-twist structure, when the drill rod 2 hits a hard object and the torque increases, the connecting block 3 cannot rotate. Since the driving structure still drives the rotating block 4 to rotate, the rotating block 4 and the connecting block 3 rotate relative to each other. The force of the connecting groove 5 squeezing the connecting ball head 6 overcomes the elastic force of the connecting spring 7, so that the connecting ball head 6 shrinks toward the inside of the rotating block 4, and the rotating block 4 and the connecting block 3 rotate relative to each other, thereby preventing the drill rod 2 from getting stuck in the shell 1 and causing rotation.

[0030] By arranging the adjusting rod 8, the pushing plate 9, the connecting frame 10, the rotating cylinder 11, the driven bevel gear 12, the driving bevel gear 13 and the rotating rod 14, the connecting spring 7 can be appropriately adjusted as needed to meet the needs of punching. Embodiment 2:

[0031] An electric drill with an anti-twist structure. This embodiment makes the following improvements on the basis of embodiment 1: Figure 1 , Figure 4 As shown, one end of the housing 1 is connected to a connecting plate 15, and both sides of the connecting plate 15 are slidably connected to slide bars 16, and the other end of the slide bar 16 is connected to a rotating frame 18, and a circular hole located on the outside of the drill rod 2 is provided in the middle section of the rotating frame 18, and a reset spring 17 is sleeved on the outside of the slide bar 16, and the two ends of the reset spring 17 are respectively connected to the connecting plate 15 and the rotating frame 18, and one end of the rotating frame 18 is rotatably connected to a positioning plate 19, and a limiting component 20 is provided on one side of the positioning plate 19, and an angle scale plate 21 is provided on the outer wall of the top of the positioning plate 19. 8 is connected to an angle pointer, and the limit assembly 20 includes a fixed cylinder 22 and a limit groove 23. The fixed cylinder 22 is fixed to the outer wall of one side of the positioning plate 19, and the limit groove 23 is rotatably connected to the inner wall of the fixed cylinder 22. One side of the limit groove 23 is connected to one end of the rotating shaft of the rotating frame 18. The inner wall of the fixed cylinder 22 is slidably connected to a sliding block 24, and one end of the sliding block 24 is connected to a spline 25. The spline 25 is limitedly matched with the limit groove 23. One side of the sliding block 24 is connected to a limit spring 26, and the other end of the limit spring 26 is connected to the inner wall of the fixed cylinder 22.

[0032] When drilling, the positioning plate 19 is placed against the drilling plane. When the drill rod 2 moves down to drill, the connecting plate 15 moves down with the shell 1, and the connecting plate 15 moves toward the positioning plate 19 along the sliding rod 16, providing guidance for the movement of the drill rod 2, and the reset spring 17 is compressed. When the drilling is completed, the reset spring 17 pushes the rotating frame 18 away from the connecting plate 15; when the drilling angle and the drilling plane have an angle, the sliding block 24 is pulled to one side, and the limit spring 26 is stretched, driving the spline 25 to disengage from the limit groove 23. At this time, the rotating frame 18 can rotate relative to the positioning plate 19, and the angle between the rotating frame 18 and the positioning plate 19 is adjusted according to the angle scale plate 21 and the pointer. After the adjustment is completed, the sliding block 24 is released, and the limit spring 26 pulls the sliding block 24 to reset, so that the spline 25 is inserted into the limit groove 23 for limiting.

[0033] By setting the connecting plate 15, the sliding rod 16, the return spring 17, the rotating frame 18, the positioning plate 19, the limit assembly 20 and the angle scale plate 21, the drilling direction of the drill rod 2 can be guided to avoid the drilling tilt, and when the drilling angle is at an angle with the drilling plane, the angle between the rotating frame 18 and the positioning plate 19 can be adjusted.

[0034] Working principle: when drilling, the positioning plate 19 is pressed against the drilling plane, and the driving structure drives the rotating block 4 to rotate, and the connecting block 3 is driven to rotate through the limit cooperation between the connecting ball head 6 and the connecting groove 5, so that the drill rod 2 rotates. When the drill rod 2 moves down to drill, the connecting plate 15 moves down with the shell 1, and the connecting plate 15 moves toward the positioning plate 19 along the sliding rod 16 to provide guidance for the movement of the drill rod 2. The reset spring 17 is compressed. When the drilling is completed, the reset spring 17 pushes the rotating frame 18 away from the connecting plate 15; when the drill rod 2 drills into a hard object and the torque increases, the connecting block 3 cannot rotate. Since the driving structure still drives the rotating block 4 to rotate, the rotating block 4 and the connecting block 3 rotate relative to each other, the force of the connecting groove 5 squeezing the connecting ball head 6 overcomes the elastic force of the connecting spring 7, so that the connecting ball head 6 shrinks toward the inside of the rotating block 4, and the rotating block 4 and the connecting block 3 rotate relative to each other, avoiding the drill rod 2 The housing 1 is stuck and rotated. When it is necessary to increase the force for relative rotation between the connecting block 3 and the rotating block 4, the rotating rod 14 is rotated, and the rotating cylinder 11 is driven to rotate through the transmission of the active bevel gear 13 and the driven bevel gear 12, so that the push plate 9 moves to one side, pushing the adjusting rod 8 to compress the connecting spring 7, thereby increasing the force required for the connecting ball head 6 to contract into the inside of the rotating block 4; when there is an angle between the drilling angle and the drilling plane, the sliding block 24 is pulled to one side, the limiting spring 26 is stretched, and the spline 25 is driven to disengage from the limiting groove 23. At this time, the rotating frame 18 can rotate relative to the positioning plate 19, and the angle between the rotating frame 18 and the positioning plate 19 is adjusted according to the angle scale plate 21 and the pointer. After the adjustment is completed, the sliding block 24 is released, and the limiting spring 26 pulls the sliding block 24 to reset, so that the spline 25 is inserted into the limiting groove 23 for limiting.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electric drill with an anti-twist structure, comprising a housing (1), characterized in that: One end of the housing (1) is connected to a drill rod (2) via an anti-twist assembly. The anti-twist assembly comprises a connecting block (3) and a rotating block (4). The connecting block (3) is rotatably engaged with the inner wall of the housing (1). The drill rod (2) is detachably connected to one end of the connecting block (3). The rotating block (4) is rotatably engaged with one side of the drill rod (2). A driving structure for driving the rotating block (4) to rotate is provided inside the housing (1). One side of the rotating block (4) is slidably connected to a plurality of connecting ball heads (6). One side of the connecting block (3) is provided with a connecting groove (5) that is limitedly engaged with the connecting ball head (6). The connecting groove (5) is arc-shaped. One side of the connecting ball head (6) is connected to a connecting spring (7).

2. The electric drill with an anti-twist structure according to claim 1, characterized in that: A plurality of adjustment rods (8) are slidably connected to the other side of the rotating block (4); the adjustment rods (8) are located opposite to the connecting ball head (6); and the other end of the connecting spring (7) is connected to the adjustment rod (8).

3. The electric drill with an anti-twist structure according to claim 1, characterized in that: A connecting frame (10) is fixed to the inner wall of the housing (1); a push plate (9) is slidably connected to one side of the connecting frame (10) in a transverse manner; one side of the push plate (9) is in contact with and cooperates with the adjustment rod (8); the other side of the connecting frame (10) is rotatably connected to a rotating cylinder (11); the rotating cylinder (11) is threadably engaged with the connecting frame (10); and one end of the rotating cylinder (11) is connected to a driven bevel gear (12).

4. The electric drill with an anti-twist structure according to claim 3, characterized in that: The top end of the housing (1) is connected to a rotating rod (14), and the bottom end of the rotating rod (14) is connected to a driving bevel gear (13) that is in transmission meshing with the driven bevel gear (12).

5. The electric drill with an anti-twist structure according to claim 1, characterized in that: One end of the housing (1) is connected to a connecting plate (15), both sides of the connecting plate (15) are slidably connected to sliding rods (16), the other end of the sliding rod (16) is connected to a rotating frame (18), a return spring (17) is sleeved on the outer side of the sliding rod (16), and the two ends of the return spring (17) are respectively connected to the connecting plate (15) and the rotating frame (18).

6. The electric drill with an anti-twist structure according to claim 5, characterized in that: One end of the rotating frame (18) is rotatably connected to a positioning plate (19), one side of the positioning plate (19) is provided with a limit assembly (20), an outer wall at the top end of the positioning plate (19) is provided with an angle scale plate (21), and the rotating shaft of the rotating frame (18) is connected to an angle pointer.

7. The electric drill with an anti-twist structure according to claim 6, characterized in that: The limiting assembly (20) comprises a fixed cylinder (22) and a limiting groove (23), wherein the fixed cylinder (22) is fixed to an outer wall of one side of the positioning plate (19), the limiting groove (23) is rotatably connected to an inner wall of the fixed cylinder (22), and one side of the limiting groove (23) is connected to one end of a rotating shaft of the rotating frame (18).

8. The electric drill with an anti-twist structure according to claim 7, characterized in that: The inner wall of the fixed cylinder (22) is slidably connected to a sliding block (24), one end of the sliding block (24) is connected to a spline (25), the spline (25) is limitedly matched with the limiting groove (23), one side of the sliding block (24) is connected to a limiting spring (26), the other end of the limiting spring (26) is connected to the inner wall of the fixed cylinder (22).

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