Safe screwdriver

Abstract

The utility model discloses a safety type screwdriver which comprises a machine body made of flame-retardant plastic materials, a detachable lithium battery is installed at the lower end of the machine body, a clamping block connected with an internal motor is rotatably installed at the front end of the machine body, and a screwdriver bit is installed in the clamping block in a clamped mode. And a brake mechanism is installed on the upper surface of the machine body, the clamping blocks are clamped and braked through the brake mechanism, a storage magnetic block is fixedly installed on the side face of the machine body, and screwdriver bits of common models are adsorbed and stored through the storage magnetic block. According to the safe screwdriver, novel structural design is adopted, a brake mechanism is arranged, when the device is idle and not used, a movable plate is moved forwards, so that a first tooth block below the movable plate and a second tooth block on the outer surface of a clamping block are clamped with each other, and rotation of the clamping block is limited; at the moment, even if a non-worker presses the start button, the device cannot work, so that the overall safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screwdrivers, in particular to a safety screwdriver. Background Art

[0002] A screwdriver is a screwdriver that uses electricity or batteries as a power source, also known as an electric screwdriver. It can quickly and easily tighten or remove screws and is widely used in manufacturing, decoration, home repair, electronic product repair and other fields. A screwdriver is more efficient than a traditional manual screwdriver and can save a lot of manpower and time.

[0003] In the prior art, a Chinese patent with authorization announcement number CN217143764U discloses a rechargeable screwdriver, including a charging base, a handle fixedly connected to the upper end of the charging base, a shell fixedly connected to the top of the handle, the shell rotatably connected to a rotating base, the rotating base fixedly connected to a screwdriver, a motor fixedly connected to the inner end of the shell, a gear assembly connected to the output end of the motor, the gear assembly respectively connected to a first pulley assembly and a second pulley assembly, the first pulley assembly is connected to a first fan blade, the second pulley assembly is connected to a second fan blade, and the other side of the first pulley assembly is connected to a connecting shaft. The rechargeable screwdriver, by arranging the first fan blade and the second fan blade in the device, the first fan blade and the second fan blade rotate in opposite directions, and when the motor rotates forward and reversely, the two can continuously maintain the gas flow state at the inner end of the shell through the vent hole and the vent groove, and continuously dissipate heat from the motor.

[0004] The above device is turned on and off by a button during use, but the button in the device is exposed to the outside. When the device is idle, non-staff (such as children at home) can easily touch the button and turn on the device. At this time, due to lack of experience in use, danger may easily occur. Utility Model Content

[0005] The utility model aims to provide a safety screwdriver to solve the problem of danger caused by random operation by non-staff members in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a safety screwdriver, comprising a machine body made of flame-retardant plastic material, a detachable lithium battery is installed at the lower end of the machine body, and further comprising:

[0007] A clamping block connected to an internal motor is rotatably mounted at the front end of the machine body, a screwdriver head is clamped and mounted inside the clamping block, and a brake mechanism is mounted on the upper surface of the machine body, and the clamping block is braked by the brake mechanism;

[0008] A storage magnetic block is fixedly installed on the side of the machine body, and commonly used screwdriver heads are adsorbed and stored by the storage magnetic block. An anti-skid pad is fixedly installed on the outer surface of the handle position at the lower end of the machine body, and the anti-skid pad is set to be made of rubber.

[0009] Preferably, the braking mechanism comprises a movable plate mounted on the upper surface of the machine body, and a first tooth block is fixedly mounted on the lower surface of the front end of the movable plate, and the first tooth block is engaged with a second tooth block fixedly mounted on the outer surface of the clamping block.

[0010] Preferably, a movable slider is fixedly installed on the lower surface of the movable plate to drive the movable plate to move, and a forward and backward sliding structure is formed between the movable slider and a limiting sliding groove provided on the upper surface of the machine body.

[0011] Preferably, a return spring is fixedly installed between the side of the movable slider and the inner wall of the limiting slide groove, and a locking piece is rotatably installed on the upper surface of the rear end of the movable plate, and a locking structure is formed between the locking piece and a fixed column fixedly installed on the upper surface of the machine body.

[0012] Preferably, a restraint belt is provided on the outside of the side of the handle at the lower end of the machine body, and the bottom end of the restraint belt is fixedly connected to the machine body, so that the user's hand is fixed by the restraint belt.

[0013] Preferably, the upper end of the restraining belt passes through a limiting ring fixedly mounted on the outer surface of the machine body, and a pulling rope is rotatably mounted on the top end of the restraining belt.

[0014] Preferably, an adjusting dial is rotatably mounted on the outside of the side of the machine body, and the top end of the pulling rope is rotatably connected to the outer surface of the adjusting dial, and the adjusting dial is driven by a separate motor inside the machine body.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the safety screwdriver adopts a new structural design, the specific contents of which are as follows:

[0016] 1. A braking mechanism is provided. When the device is not in use, the movable plate is moved forward, so that the first tooth block under the movable plate and the second tooth block on the outer surface of the clamping block are engaged with each other, thereby limiting the rotation of the clamping block. At this time, even if non-staff members press the start button, the device cannot be operated, thereby improving the overall safety;

[0017] Furthermore, the elastic action of the return spring is utilized to push the movable slider to slide inside the limiting slide groove, so that the movable slider drives the movable plate to move outward, so that the movable plate is maintained in a position where it is engaged with the clamping block for braking;

[0018] Furthermore, a locking piece is installed on the upper surface of the movable plate. After the movable plate is moved backward, the locking piece and the fixed column are engaged with each other to limit the position of the movable plate and prevent the movable plate from moving to a position where it is engaged with the clamping block for braking during use.

[0019] 2. A restraint belt is installed on the side of the machine body. When the user holds the device in hand, the restraint belt is used to fix the user's hand so that the user's hand is close to the device to avoid the risk of slipping out of the hand during use, thereby further improving the safety of the device;

[0020] Furthermore, an adjustment dial is installed on the side of the machine body, and the motor drives the adjustment dial to rotate, so that the adjustment dial pulls the upper end of the restraint belt through the pull rope to change the tightness of the restraint belt, so that the device can be used by different users. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the overall lower surface structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the engagement structure between the first tooth block and the second tooth block of the utility model;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the limiting slideway of the utility model;

[0025] Figure 5 For this utility model Figure 4 The enlarged structural diagram at A in the middle;

[0026] Figure 6 This is a schematic diagram of the connection structure between the adjusting dial and the restraining belt of the utility model.

[0027] In the figure: 1. Machine body; 2. Lithium battery; 3. Clamping block; 4. Screwdriver head; 5. Movable plate; 6. First tooth block; 7. Second tooth block; 8. Moving slider; 9. Limiting slide groove; 10. Reset spring; 11. Engaging piece; 12. Fixed column; 13. Storage magnet; 14. Anti-slip pad; 15. Restraint belt; 16. Limiting ring; 17. Pull rope; 18. Adjustment dial. DETAILED DESCRIPTION

[0028] 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.

[0029] Embodiment 1

[0030] See also Figure 1-Figure 5 In order to solve the problem of danger caused by non-staff operating the device, this embodiment provides the following technical solutions, a braking mechanism is set, and the non-staff operating the device is restricted by braking the clamping block 3, and specifically discloses: a machine body 1 made of flame-retardant plastic material, a detachable lithium battery 2 is installed at the lower end of the machine body 1, a clamping block 3 connected to the internal motor is rotatably installed at the front end of the machine body 1, and a screwdriver head 4 is clamped and installed inside the clamping block 3, and a braking mechanism is installed on the upper surface of the machine body 1, and the clamping block 3 is engaged and braked by the braking mechanism, and a storage magnetic block 13 is fixedly installed on the side of the machine body 1, and the storage magnetic block 13 is used to absorb and store constant A screwdriver head 4 of the same model is used, and an anti-skid pad 14 is fixedly installed on the outer surface of the handle position at the lower end of the machine body 1, and the anti-skid pad 14 is set to rubber material. The braking mechanism includes a movable plate 5 installed on the upper surface of the machine body 1, and a first tooth block 6 is fixedly installed on the lower surface of the front end of the movable plate 5, and the first tooth block 6 and the second tooth block 7 fixedly installed on the outer surface of the clamping block 3 are engaged with each other, and a moving slider 8 is fixedly installed on the lower surface of the movable plate 5 to drive it to move, and the moving slider 8 and the limiting slide groove 9 opened on the upper surface of the machine body 1 form a front and rear sliding structure, and a return spring 10 is fixedly installed between the side of the moving slider 8 and the inner wall of the limiting slide groove 9.

[0031] When the device is idle, the movable slider 8 first slides in the limiting slide groove 9 under the elastic pushing action of the return spring 10 inside the limiting slide groove 9. At this time, the movable slider 8 drives the movable plate 5 to move synchronously, and finally the front end of the movable plate 5 extends out of the machine body 1. At this time, the first tooth block 6 on the lower surface of the front end of the movable plate 5 and the second tooth block 7 on the outer surface of the clamping block 3 are engaged with each other, thereby limiting the rotation of the clamping block 3. If the machine body 1 is not taken by a staff member for operation, the device cannot be operated even if the switch is pressed, thereby improving the overall safety of the device.

[0032] Embodiment 2

[0033] See also Figure 1In order to solve the problem of fixing the movable plate 5 during the use of the device, this embodiment provides the following technical solution, which limits the position of the movable plate 5 by sliding the movable plate 5 and locking it. Specifically, it is disclosed that: a locking piece 11 is rotatably installed on the upper surface of the rear end of the movable plate 5, and the locking piece 11 and the fixed column 12 fixedly installed on the upper surface of the machine body 1 form a locking structure.

[0034] When using the device, the operator first manually moves the movable plate 5 backwards to disengage the first tooth block 6 and the second tooth block 7 below the movable plate 5, and then aligns the holes of the locking piece 11 on the upper surface of the movable plate 5 with the fixing column 12 to form a locking pattern, thereby fixing the position of the movable plate 5.

[0035] Embodiment 3

[0036] See also Figure 1 , Figure 2 and Figure 6 In order to solve the problem that the device may slip out of the hand and cause danger during use, the present embodiment provides the following technical solution: a restraint belt 15 is installed on the side of the device, and the restraint belt 15 is used to restrain and fix the user's hand to achieve the purpose of preventing the hand from slipping out. Specifically, it is disclosed that: a restraint belt 15 is arranged on the outside of the side of the handle position at the lower end of the machine body 1, and the bottom end of the restraint belt 15 is fixedly connected to the machine body 1, and the user's hand is fixed by the restraint belt 15. The upper end of the restraint belt 15 passes through a limit ring 16 fixedly installed on the outer surface of the machine body 1, and a pulling rope 17 is rotatably installed on the top of the restraint belt 15, and an adjusting dial 18 is rotatably installed on the outside of the side of the machine body 1, and the top end of the pulling rope 17 is rotatably connected to the outer surface of the adjusting dial 18, and the adjusting dial 18 is driven by a separate motor inside the machine body 1.

[0037] When the staff holds the machine body 1, the fingers pass through the restraint belt 15 and touch the anti-slip pad 14. Then the independent motor inside the machine body 1 drives the adjustment dial 18 to rotate. During the rotation, the adjustment dial 18 pulls the upper end of the restraint belt 15 through the pulling rope 17 on its outer surface. At this time, the upper end of the restraint belt 15 moves upward under the limiting action of the limiting ring 16, thereby changing the overall tightness of the restraint belt 15 to achieve the best restraint and fixation effect for the user.

[0038] 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 safety screwdriver, comprising a machine body (1) made of flame-retardant plastic material, a removable lithium battery (2) being installed at the lower end of the machine body (1), characterized in that: Also includes: A clamping block (3) connected to an internal motor is rotatably mounted on the front end of the machine body (1), a screwdriver head (4) is clamped and mounted inside the clamping block (3), and a braking mechanism is mounted on the upper surface of the machine body (1), and the clamping block (3) is braked by the braking mechanism; A storage magnetic block (13) is fixedly mounted on the side of the machine body (1), and commonly used screwdriver bits (4) are adsorbed and stored by the storage magnetic block (13). An anti-skid pad (14) is fixedly mounted on the outer surface of the handle at the lower end of the machine body (1), and the anti-skid pad (14) is made of rubber material.

2. A safety screwdriver according to claim 1, characterized in that: The braking mechanism comprises a movable plate (5) mounted on the upper surface of the machine body (1), and a first tooth block (6) is fixedly mounted on the lower surface of the front end of the movable plate (5), and the first tooth block (6) and a second tooth block (7) fixedly mounted on the outer surface of the clamping block (3) are mutually engaged.

3. A safety screwdriver according to claim 2, characterized in that: A movable slider (8) is fixedly mounted on the lower surface of the movable plate (5) to drive the movable plate (5) to move, and a forward and backward sliding structure is formed between the movable slider (8) and a limiting sliding groove (9) provided on the upper surface of the machine body (1).

4. A safety screwdriver according to claim 3, characterized in that: A return spring (10) is fixedly installed between the side surface of the movable slider (8) and the inner wall of the limiting slide groove (9), and a locking piece (11) is rotatably installed on the upper surface of the rear end of the movable plate (5), and a locking structure is formed between the locking piece (11) and a fixed column (12) fixedly installed on the upper surface of the machine body (1).

5. A safety screwdriver according to claim 4, characterized in that: A restraint belt (15) is provided on the outside of the side of the handle at the lower end of the machine body (1), and the bottom end of the restraint belt (15) is fixedly connected to the machine body (1), and the restraint belt (15) is used to fix the user's hand.

6. A safety screwdriver according to claim 5, characterized in that: The upper end of the restraining belt (15) passes through a limiting ring (16) fixedly mounted on the outer surface of the machine body (1), and a pulling rope (17) is rotatably mounted on the top end of the restraining belt (15).

7. A safety screwdriver according to claim 6, characterized in that: An adjusting dial (18) is rotatably mounted on the outside of the side of the machine body (1), and the top end of the pulling rope (17) is rotatably connected to the outer surface of the adjusting dial (18), and the adjusting dial (18) is driven by a separate motor inside the machine body (1).

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