Tool bit stabilizing device of electric screwdriver

Abstract

The utility model discloses a tool bit stabilizing device of an electric screw driver, and relates to the technical field of electric screw drivers, in particular to the tool bit stabilizing device of the electric screw driver, which comprises a cutter handle, a cutter body arranged on the cutter handle and a chuck arranged at the front end of the cutter body, and a stabilizing mechanism is fixed at the front end of the chuck. The stabilizing mechanism comprises a cylinder base fixed to the surface of the front end of the chuck, a contraction head fixed to the front end of the interior of the cylinder base, a guide sleeve installed on the contraction head in a sleeving mode, a cylinder cover installed at the front end of the cylinder base and a ball installed on the inner wall of the contraction head. The problems that a screwdriver head and a chuck are prone to loosening under high-speed rotation due to the fact that the screwdriver head and the chuck are fixed, or the screwdriver head and the chuck are not accurately installed, the screwdriver head and the chuck on a motor are not located on the same axis, and a screw cannot be screwed in or the screw and a screw hole are damaged in the using process are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric screwdrivers, in particular to a tool head stabilizing device for an electric screwdriver. Background Art

[0002] Electric screwdriver, also known as electric screwdriver, is an electric tool used for tightening and loosening. This electric tool is equipped with a mechanism to adjust and limit torque. It is mainly used in assembly lines and is one of the essential tools for most manufacturing companies.

[0003] After checking the public (announcement) number: CN219190026U, an electric screwdriver with a guide cylinder is disclosed. This technology discloses technical solutions such as "when the electric screwdriver is installing a screw, the screw is located in the placement hole, and the guide cylinder continuously enters the guide hole as the screw is screwed in, which has a good guiding effect", and has technical effects such as "effectively solving the problem of the screw and the cutter head slipping or the screw being deviated during the use of the electric screwdriver";

[0004] However, most electric screwdrivers use an internal motor to drive the bit fixed on the chuck to rotate. In actual operation, the vibration generated by the rotation of the motor is inevitable, causing the bit to easily loosen from the chuck under high-speed rotation, or the bit and the chuck are not installed accurately when they are fixed, and the bit and the chuck on the motor are not on the same axis, resulting in the inability to screw in the screws during use or causing damage to the screws and screw holes. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a tool head stabilizing device for an electric screwdriver, which has the characteristics of limiting the tool head and keeping the tool head stable while not causing motion interference to the rotation of the tool head.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a blade stabilizing device for an electric screwdriver, comprising a handle, a blade body mounted on the handle, and a chuck mounted on the front end of the blade body, a stabilizing mechanism fixed to the front end of the chuck, a folding tube mounted on the front end surface of the stabilizing mechanism, the stabilizing mechanism comprising a cartridge seat fixed to the front end surface of the chuck, a shrinking head fixed to the front end of the cartridge seat, a guide sleeve mounted on the shrinking head, a cartridge cover mounted on the front end of the cartridge seat, and balls mounted on the inner wall of the shrinking head, and the balls are equidistantly distributed and mounted on the inner wall of the shrinking head.

[0007] Preferably, a magnet ring is fixed inside the rear end of the folding tube, and the folding tube is adsorbed and mounted on the front end surface of the guide sleeve through the magnet ring.

[0008] Preferably, the foldable tube is a steel wire telescopic hose, and the entire foldable tube is made of a transparent structure.

[0009] Preferably, a connecting head is fixed to the rear end of the blade body, and the blade body is pivotally connected to the handle through the connecting head, a plurality of tooth grooves are provided on the outer edge of the connecting head, a cavity is provided on the outer wall of one end of the handle close to the blade body, a spring sheet is fixedly installed inside the cavity, a tooth head is fixed to the front bottom of the spring sheet, and a shift block is slidably installed inside the upper end of the cavity.

[0010] Preferably, the front end outer wall of the shrinking head is a truncated cone structure, and the inner wall of the guide sleeve is a truncated cone structure.

[0011] Preferably, the inner wall of the cylinder cover and the outer wall of the cylinder seat are threadedly mounted.

[0012] Beneficial Effects

[0013] The utility model provides a tool head stabilizing device for an electric screwdriver. Compared with the prior art, the utility model has the following beneficial effects:

[0014] (1) After the screwdriver bit passes through the stabilizing mechanism and is inserted into the interior of the chuck, the guide sleeve is pushed by rotating the cylinder cover to squeeze the shrinking head. When the shrinking head is squeezed, it is tightened toward the shaft diameter. At the same time, the shrinking head drives the ball bearing to center and limit the screwdriver bit, so that the screwdriver bit and the chuck are on the same axis. The screwdriver bit is then fixed by the chuck, and the screwdriver bit drives the ball bearing to roll when it rotates, which keeps the screwdriver bit stable and does not cause motion interference to the rotation of the screwdriver bit.

[0015] (2) When the screw needs to be tightened, the folding tube is fixed to the stabilizing mechanism through the magnet ring, and the screw is adsorbed by the screwdriver bit so that the screw is located inside the folding tube to limit its position. The condition of the screw inside can be observed through the folding tube to prevent the screw from being screwed crooked. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic cross-sectional structure diagram of the stabilizing mechanism in the utility model;

[0018] Figure 3 It is a structural schematic diagram of the folding tube in the utility model;

[0019] Figure 4 It is a partial cross-sectional view of the connection between the handle and the blade of the utility model;

[0020] In the figure: 1. knife handle; 2. knife body; 3. chuck; 4. stabilizing mechanism; 401. cylinder seat; 402. shrinking head; 403. guide sleeve; 404. cylinder cover; 405. ball bearing; 5. folding tube; 6. magnet ring; 7. connector; 8. tooth groove; 9. cavity; 10. spring sheet; 11. tooth head; 12. shift block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 The utility model provides a technical solution for a blade stabilizing device of an electric screwdriver: a blade stabilizing device of an electric screwdriver, comprising a handle 1, a blade body 2 mounted on the handle 1, and a chuck 3 mounted at the front end of the blade body 2, a stabilizing mechanism 4 is fixed at the front end of the chuck 3, and a folding tube 5 is mounted on the front end surface of the stabilizing mechanism 4; the stabilizing mechanism 4 comprises a cartridge seat 401 fixed at the front end surface of the chuck 3, a shrinking head 402 fixed at the front end of the cartridge seat 401, a guide sleeve 403 sleeved and mounted on the shrinking head 402, a cartridge cover 404 mounted at the front end of the cartridge seat 401, and a folding tube 5 mounted on the inner wall of the shrinking head 402. The balls 405 on the screwdriver are evenly distributed and installed on the inner wall of the shrinking head 402. In this embodiment, after the screwdriver bit passes through the stabilizing mechanism 4 and is inserted into the interior of the chuck 3, the guide sleeve 403 is pushed by rotating the cylinder cover 404 to squeeze the shrinking head 402. When the shrinking head 402 is squeezed, it is tightened toward the shaft diameter. At the same time, the shrinking head 402 drives the balls 405 to center and limit the screwdriver bit, so that the screwdriver bit and the chuck 3 are on the same axis. The screwdriver bit is then fixed by the chuck 3, and the screwdriver bit drives the balls 405 to roll when it rotates, so that the screwdriver bit is kept stable without causing motion interference to the rotation of the screwdriver bit.

[0023] Specifically, a magnet ring 6 is fixed inside the rear end of the folding tube 5, and the folding tube 5 is adsorbed and installed on the front end surface of the guide sleeve 403 through the magnet ring 6. In this embodiment, when the screw needs to be tightened, the folding tube 5 is magnetically fixed to the stabilizing mechanism 4 through the magnet ring 6, and then the screw is adsorbed through the screwdriver bit so that the screw is located inside the folding tube 5, and it is limited to prevent the screw from being distorted.

[0024] Specifically, the folding tube 5 is a steel wire telescopic hose, and the overall material of the folding tube 5 is a transparent structure. In this embodiment, the inside of the folding tube 5 is woven with a steel wire mesh to make it pressure-resistant and not easy to deform, and the condition of the internal screws can be observed through the folding tube 5.

[0025] Specifically, a connecting head 7 is fixed to the rear end of the blade body 2, and the blade body 2 is pivotally connected to the handle 1 through the connecting head 7. A plurality of tooth grooves 8 are provided on the outer edge of the connecting head 7. A cavity 9 is provided on the outer wall of the end of the handle 1 close to the blade body 2. A spring sheet 10 is fixedly installed inside the cavity 9. A tooth head 11 is fixed to the bottom of the front end of the spring sheet 10. A shift block 12 is slidably installed inside the upper end of the cavity 9. In this embodiment, the shift block 12 is disengaged from the spring sheet 10 by shifting the shift block 12 backward. The tooth head 11 can be driven to disengage from the tooth groove 8 on the connecting head 7 by the pressure of the front end of the spring sheet 10 rebounding upward, so that the blade body 2 and the handle 1 can be rotated. After the handle 1 is rotated to a suitable angle, the shift block 12 is shifted forward. The front end of the shift block 12 presses the front end of the spring sheet 10 downward, so that the tooth head 11 on the spring sheet 10 is stuck in the corresponding tooth groove 8. The angle between the handle 1 and the blade body 2 can be fixed by limiting the rotation of the connecting head 7.

[0026] Specifically, the front end outer wall of the shrinking head 402 is a truncated cone structure, the inner wall of the guide sleeve 403 is a truncated cone structure, and the inner wall of the cylinder cover 404 and the outer wall of the cylinder seat 401 are threadedly installed. In this embodiment, the guide sleeve 403 can be pushed to move toward the inside of the cylinder seat 401 by rotating and tightening the cylinder cover 404, and at the same time, the guide sleeve 403 can squeeze the shrinking head 402 to tighten toward the axis.

[0027] The working principle and use process of the utility model are as follows: first, by shifting the shift block 12 backward, the shift block 12 is separated from the spring sheet 10, and the pressure of the front end of the spring sheet 10 rebounding upward can drive the tooth head 11 to be separated from the tooth groove 8 on the connecting head 7, so that the blade 2 and the handle 1 can be rotated. After the handle 1 is rotated to a suitable angle, the shift block 12 is shifted forward, and the front end of the shift block 12 presses the front end of the spring sheet 10 downward, so that the tooth head 11 on the spring sheet 10 is stuck in the corresponding tooth groove 8. By limiting the rotation of the connecting head 7, the angle between the handle 1 and the blade 2 can be fixed; then, the screwdriver bit is inserted into the inside of the chuck 3 through the stabilizing mechanism 4. Finally, the guide sleeve 403 is pushed to squeeze the shrinking head 402 by rotating the cylinder cover 404. When the shrinking head 402 is squeezed, it is tightened toward the axial diameter. At the same time, the shrinking head 402 drives the ball 405 to center and limit the screwdriver bit, so that the screwdriver bit and the chuck 3 are on the same axis. The screwdriver bit is then fixed by the chuck 3, and the screwdriver bit drives the ball 405 to roll when rotating, which keeps the screwdriver bit stable and does not cause motion interference to the rotation of the screwdriver bit. Finally, when it is necessary to tighten the screw, the folding tube 5 is magnetically fixed to the stabilizing mechanism 4 by the magnet ring 6, and then the screw is adsorbed by the screwdriver bit, so that the screw is located inside the folding tube 5, and is limited to avoid the screw being crooked.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tool head stabilizing device for an electric screwdriver, comprising a tool handle (1), a tool body (2) mounted on the tool handle (1), and a chuck (3) mounted at the front end of the tool body (2), characterized in that: A stabilizing mechanism (4) is fixed to the front end of the chuck (3), and a folding tube (5) is installed on the front end surface of the stabilizing mechanism (4); The stabilizing mechanism (4) comprises a cartridge seat (401) fixed on the front end surface of the chuck (3), a shrinking head (402) fixed on the front end of the cartridge seat (401), a guide sleeve (403) sleeved on the shrinking head (402), a cartridge cover (404) installed on the front end of the cartridge seat (401), and balls (405) installed on the inner wall of the shrinking head (402), and the balls (405) are equidistantly distributed and installed around the inner wall of the shrinking head (402).

2. The tool head stabilizing device for an electric screwdriver according to claim 1, characterized in that: A magnet ring (6) is fixed inside the rear end of the folding tube (5), and the folding tube (5) is adsorbed and mounted on the front end surface of the guide sleeve (403) through the magnet ring (6).

3. The tool head stabilizing device for an electric screwdriver according to claim 1, characterized in that: The foldable tube (5) is a steel wire telescopic hose, and the entire foldable tube (5) is made of a transparent structure.

4. The tool head stabilizing device for an electric screwdriver according to claim 1, characterized in that: A connecting head (7) is fixed at the rear end of the blade body (2), and the blade body (2) is pivotally connected to the handle (1) through the connecting head (7); a plurality of tooth grooves (8) are provided on the outer edge of the connecting head (7); a cavity (9) is provided on the outer wall of the end of the handle (1) close to the blade body (2); a spring sheet (10) is fixedly installed inside the cavity (9); a tooth head (11) is fixed at the bottom of the front end of the spring sheet (10); and a shifting block (12) is slidably installed inside the upper end of the cavity (9).

5. The tool head stabilizing device for an electric screwdriver according to claim 1, characterized in that: The front end outer wall of the shrinking head (402) is a truncated cone structure, and the inner wall of the guide sleeve (403) is a truncated cone structure.

6. The tool head stabilizing device for an electric screwdriver according to claim 1, characterized in that: The inner wall of the cylinder cover (404) and the outer wall of the cylinder seat (401) are threadedly mounted.

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