A retractable screwdriver rod assembly

Abstract

The utility model relates to the technical field of hardware tools, and particularly discloses a retractable screwdriver rod assembly, wherein a connecting rod is rotatably installed on the inner wall of the tool rod, a torsion spring is sleeved on the side wall of the connecting rod, a concave disc is fixedly installed on the side wall of the connecting rod, a square groove is opened on the side wall of the concave disc, a mounting rod is fixedly installed on the side wall of the concave disc, a sliding rod is fixedly installed on the inner wall of the mounting rod, a fixing block is fixedly installed on the side wall of the tool rod, and a spring sheet is fixedly installed on the side wall of the fixing block. When the tool rod is pulled, the concave disc drives the connecting rod to rotate clockwise, the connecting rod rotates clockwise, the torsion spring is twisted under force, the rotation amplitude of the concave disc becomes larger, the spring sheet will be stuck in the inside of the square groove, and then the sliding rod is pushed to the top. When the sliding rod moves to the arc plate, the sliding rod drives the mounting rod to flip counterclockwise, the mounting rod drives the concave disc to rotate counterclockwise, the spring sheet is forced to separate from the inside of the square groove, and the sliding rod is again fitted with the side wall of the card block, thereby achieving the function of the screwdriver being able to be quickly locked and retracted.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware tools, in particular to a telescopic screwdriver rod assembly. Background Art

[0002] A screwdriver is a tool used to tighten or loosen screws. It usually consists of a handle and a screwdriver head. The screwdriver head can be in various shapes, such as cross, flat head, hexagonal, etc., to accommodate different types of screws. The screwdriver tightens or loosens the screw by transferring the rotational force to the notch or raised part of the screw.

[0003] For example, a Chinese patent discloses: a screwdriver, patent number: CN218984617U, which operates the blades to move closer or farther from each other through operating components and elastic parts, thereby driving the blade heads to move closer or farther from each other. When the blade heads move closer to each other, the height of the insertion portion increases, and it is in close contact with the slot or notch of the screw, thereby preventing the screw from falling through tension and friction; when the blade heads move away from each other, the height of the insertion portion decreases, and it is separated from the slot or notch of the screw, making it easy to detach the screw. This screwdriver is easy to operate with one hand, can prevent screws from falling or being lost, and prevent screws from falling into the device, thereby preventing them from damaging the device.

[0004] However, during the implementation of the above technical solution, it was found that at least the following technical problems exist: as mentioned above, the shank of the screwdriver cannot be extended and retracted. When the depth of the circular groove where the screw is located is greater than the length of the shank, the screwdriver head cannot contact the screw, and a screwdriver with a longer shank needs to be replaced to remove the screw. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a retractable screwdriver rod assembly, which solves the technical problem that the screwdriver rod cannot be retracted as mentioned above, and when the depth of the circular groove where the screw is located is greater than the length of the rod, the screwdriver head cannot contact the screw, and a screwdriver with a longer rod needs to be replaced in order to remove the screw.

[0007] (II) Technical solution

[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A retractable screwdriver rod assembly comprises a square frame, a clamping block is fixedly mounted on the inner wall of the square frame, an arc plate is fixedly mounted on the inner wall of the frame, a circular groove is provided at the bottom of the square frame, a retractable mechanism is slidably mounted on the inner wall of the circular groove, the retractable mechanism comprises a tool rod, a connecting rod is rotatably mounted on the inner wall of the tool rod, a torsion spring is sleeved on the side wall of the connecting rod, and a concave disc is fixedly mounted on the side wall of the connecting rod.

[0010] Preferably, a square groove is formed on the side wall of the concave disc, and a mounting rod is fixedly mounted on the side wall of the concave disc.

[0011] Preferably, a sliding rod is fixedly mounted on the inner wall of the mounting rod, and a fixing block is fixedly mounted on the side wall of the knife rod.

[0012] Preferably, a spring sheet is fixedly mounted on the side wall of the fixed block, and a T-shaped groove is formed on the side wall of the knife rod.

[0013] Preferably, a magnet is fixedly installed inside the knife rod, and a T-shaped block is slidably installed inside the T-shaped groove.

[0014] Preferably, a cutter head is fixedly mounted on the bottom of the T-shaped block, and a handle is fixedly mounted on the side wall of the square frame.

[0015] (III) Beneficial effects

[0016] Pull the knife rod, the knife rod drives the connecting rod, the concave disc, the mounting rod and the sliding rod to move from top to bottom, the sliding rod slides on the side wall of the block, and when the sliding rod moves from top to bottom, the mounting rod flips clockwise, the mounting rod drives the concave disc to rotate clockwise, the concave disc drives the connecting rod to rotate clockwise, the connecting rod rotates clockwise, the torsion spring is twisted under force, and when the concave disc rotates clockwise, the spring sheet is deflected forward under force, when the sliding rod moves to the bottom, the rotation amplitude of the concave disc becomes larger, the spring sheet will be stuck in the square groove, and then the sliding rod is pushed to the top, and when the sliding rod moves to the arc plate, the sliding rod drives the mounting rod to flip counterclockwise, the mounting rod drives the concave disc to rotate counterclockwise, the spring sheet is forced to break away from the square groove, and the sliding rod is re-fitted with the side wall of the block, completing the extension and retraction of the screwdriver, thereby achieving the function of quick locking and extension of the screwdriver. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0018] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0019] Figure 2 This is a structural diagram of the knife bar of the utility model;

[0020] Figure 3 This is a structural diagram of a concave disc of the utility model;

[0021] Figure 4 This is a structural diagram of a magnet according to the present utility model.

[0022] Legend: 11. Frame; 12. Block; 13. Curved plate; 14. Cutter bar; 15. Connecting rod; 16. Concave disc; 17. Square groove; 18. Mounting rod; 19. Sliding rod; 21. Fixed block; 22. Spring sheet; 23. T-slot; 24. Magnet; 25. T-block; 26. Cutter head; 27. Handle. DETAILED DESCRIPTION

[0023] The embodiment of the present application provides a retractable screwdriver rod assembly, which effectively solves the problem that the screwdriver rod cannot be retracted as mentioned above. When the depth of the circular groove where the screw is located is greater than the length of the rod, the screwdriver head cannot contact the screw, and a screwdriver with a longer rod needs to be replaced to remove the screw. The rod is pulled, and the rod drives the connecting rod, the concave disc, the mounting rod and the sliding rod to move from top to bottom. The sliding rod slides on the side wall of the block. When the sliding rod moves from top to bottom, the mounting rod flips clockwise, and the mounting rod drives the concave disc to rotate clockwise. The concave disc drives the connecting rod to rotate clockwise. The connecting rod rotates clockwise, causing the torsion spring to be twisted under force. When the concave disc rotates clockwise, the spring sheet is deflected forward under force. When the sliding rod moves to the bottom, the rotation amplitude of the concave disc changes. The spring sheet will be stuck in the square groove, and then the sliding rod will be pushed to the top. When the sliding rod moves to the arc plate, the sliding rod drives the mounting rod to flip counterclockwise, and the mounting rod drives the concave disc to rotate counterclockwise. The spring sheet is forced to break away from the square groove, so that the sliding rod fits the side wall of the card block again, and the extension and retraction of the screwdriver is completed, thereby achieving the function of the screwdriver being able to quickly lock and retract. Different tool heads need to be used under different conditions. The T-shaped block is slid to the left along the inner wall of the T-shaped groove, and the T-shaped block drives the tool head to move to the left, so that the T-shaped block is connected to the tool rod, and the tool head is fixed to the bottom of the tool rod. The magnet tightly absorbs the T-shaped block to prevent the tool head from falling during use. At the same time, through the transmission of magnetic force, the screws unscrewed from the tool head are absorbed at the bottom of the tool head to prevent the screws from falling, thereby achieving the function of facilitating the replacement of the tool head.

[0024] Example

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the technical solution in the embodiment of the present application is to effectively solve the technical problem that the shank of the screwdriver cannot be extended as mentioned above, and when the depth of the circular groove where the screw is located is greater than the length of the shank, the screwdriver head cannot contact the screw, and a screwdriver with a longer shank needs to be replaced to remove the screw. The overall idea is as follows: a retractable screwdriver shank assembly includes a square frame 11, a block 12 is fixedly installed on the inner wall of the square frame 11, an arc plate 13 is fixedly installed on the inner wall of the frame 11, and a bottom of the frame 11 is opened There is a circular groove, and a telescopic mechanism is slidably installed on the inner wall of the circular groove. The telescopic mechanism includes a knife rod 14, a connecting rod 15 is rotatably installed on the inner wall of the knife rod 14, a torsion spring is sleeved on the side wall of the connecting rod 15, a concave disc 16 is fixedly installed on the side wall of the connecting rod 15, a square groove 17 is opened on the side wall of the concave disc 16, a mounting rod 18 is fixedly installed on the side wall of the concave disc 16, a sliding rod 19 is fixedly installed on the inner wall of the mounting rod 18, a fixed block 21 is fixedly installed on the side wall of the knife rod 14, and a spring sheet 22 is fixedly installed on the side wall of the fixed block 21. The knife rod 14 moves, and the knife rod 14 drives the connecting rod 15, the concave disc 16, the mounting rod 18 and the sliding rod 19 to move from top to bottom. The sliding rod 19 slides on the side wall of the block 12. When the sliding rod 19 moves from top to bottom, the mounting rod 18 flips clockwise, and the mounting rod 18 drives the concave disc 16 to rotate clockwise. The concave disc 16 drives the connecting rod 15 to rotate clockwise. The connecting rod 15 rotates clockwise, causing the torsion spring to be twisted. When the concave disc 16 rotates clockwise, the spring sheet 22 is forced to deflect forward. When the sliding rod 19 moves to the bottom, the rotation amplitude of the concave disc 16 becomes larger, and the spring sheet 22 will be stuck in the square groove 17, and then the sliding rod 19 is pushed to the top. When the sliding rod 19 moves to the arc plate 13, the sliding rod 19 drives the mounting rod 18 to flip counterclockwise, and the mounting rod 18 drives the concave disc 16 to rotate counterclockwise. The spring sheet 22 is forced to break away from the inside of the square groove 17, so that the sliding rod 19 is re-attached to the side wall of the card block 12, completing the extension and retraction of the screwdriver, thereby achieving the function of the screwdriver being able to quickly lock and retract.

[0026] A T-shaped slot 23 is provided on the side wall of the knife rod 14, a magnet 24 is fixedly installed inside the knife rod 14, a T-shaped block 25 is slidably installed inside the T-shaped slot 23, a cutter head 26 is fixedly installed at the bottom of the T-shaped block 25, and different cutter heads 26 need to be used under different conditions. The T-shaped block 25 is slid to the left along the inner wall of the T-shaped slot 23, and the T-shaped block 25 drives the cutter head 26 to move to the left, so that the T-shaped block 25 is connected to the knife rod 14, and the cutter head 26 is fixed to the bottom of the knife rod 14. The magnet 24 tightly absorbs the T-shaped block 25 to prevent the cutter head 26 from falling during use. At the same time, through the transmission of magnetic force, the screws unscrewed from the cutter head 26 are absorbed at the bottom of the cutter head 26 to prevent the screws from falling, thereby achieving the function of facilitating the replacement of the cutter head 26.

[0027] A handle 27 is fixedly mounted on the side wall of the frame 11. The handle 27 is made of rubber to prevent slipping during use.

[0028] In view of the problems existing in the prior art, the utility model provides a retractable screwdriver rod assembly, which pulls the knife rod 14, and the knife rod 14 drives the connecting rod 15, the concave disc 16, the mounting rod 18 and the sliding rod 19 to move from top to bottom, and the sliding rod 19 slides on the side wall of the block 12. When the sliding rod 19 moves from top to bottom, the mounting rod 18 flips clockwise, and the mounting rod 18 drives the concave disc 16 to rotate clockwise, and the concave disc 16 drives the connecting rod 15 to rotate clockwise. The connecting rod 15 rotates clockwise, so that the torsion spring is twisted by force. When the concave disc 16 rotates clockwise, the spring sheet 22 is deflected forward by force. When the sliding rod 19 moves to the bottom, the rotation amplitude of the concave disc 16 becomes larger, and the spring sheet 22 will be stuck in the square groove 17. Then the sliding rod 19 is pushed to the top, and the sliding rod 19 moves to the arc plate 1 3, the sliding rod 19 drives the mounting rod 18 to flip counterclockwise, and the mounting rod 18 drives the concave disc 16 to rotate counterclockwise, and the spring sheet 22 is forced to disengage from the inside of the square groove 17, so that the sliding rod 19 is re-fitted with the side wall of the card block 12, and the extension and retraction of the screwdriver is completed, thereby achieving the function that the screwdriver can be quickly locked and extended, and different cutter heads 26 need to be used under different conditions, and the T-shaped block 25 is slid to the left along the inner wall of the T-shaped groove 23, and the T-shaped block 25 drives the cutter head 26 to move to the left, so that the T-shaped block 25 is connected to the knife rod 14, and the cutter head 26 is fixed to the bottom of the knife rod 14, and the magnet 24 tightly absorbs the T-shaped block 25 to prevent the cutter head 26 from falling during use. At the same time, through the transmission of magnetic force, the screws unscrewed by the cutter head 26 are absorbed at the bottom of the cutter head 26 to prevent the screws from falling, thereby achieving the function of facilitating the replacement of the cutter head 26.

[0029] Working principle:

[0030] The first step is to pull the knife rod 14, which drives the connecting rod 15, the concave disc 16, the mounting rod 18 and the sliding rod 19 to move from top to bottom. The sliding rod 19 slides on the side wall of the block 12. When the sliding rod 19 moves from top to bottom, the mounting rod 18 flips clockwise, and the mounting rod 18 drives the concave disc 16 to rotate clockwise. The concave disc 16 drives the connecting rod 15 to rotate clockwise. The connecting rod 15 rotates clockwise, causing the torsion spring to be twisted. When the concave disc 16 rotates clockwise, the spring sheet 22 is forced to deflect forward. When the sliding rod 19 moves to the bottom, the rotation amplitude of the concave disc 16 becomes larger, the spring sheet 22 will be stuck in the square groove 17, and then the sliding rod 19 is pushed to the top. When the sliding rod 19 moves to the arc plate 13, the sliding rod 19 drives the mounting rod 18 to flip counterclockwise, and the mounting rod 18 drives the concave disc 16 to rotate counterclockwise. The spring sheet 22 is forced to break away from the inside of the square groove 17, so that the sliding rod 19 is re-attached to the side wall of the card block 12, completing the extension and retraction of the screwdriver, thereby achieving the function of the screwdriver being able to quickly lock and retract.

[0031] In the second step, different cutter heads 26 need to be used under different conditions. The T-shaped block 25 is slid to the left along the inner wall of the T-shaped slot 23. The T-shaped block 25 drives the cutter head 26 to move to the left, so that the T-shaped block 25 is connected to the cutter rod 14, and the cutter head 26 is fixed to the bottom of the cutter rod 14. The magnet 24 tightly absorbs the T-shaped block 25 to prevent the cutter head 26 from falling during use. At the same time, through the transmission of magnetic force, the screws unscrewed from the cutter head 26 are absorbed at the bottom of the cutter head 26 to prevent the screws from falling, thereby achieving the function of facilitating the replacement of the cutter head 26.

[0032] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, 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 implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A retractable screwdriver rod assembly, comprising a square frame (11), wherein a clamping block (12) is fixedly mounted on the inner wall of the square frame (11), characterized in that: An arc-shaped plate (13) is fixedly mounted on the inner wall of the square frame (11); Wherein, a circular groove is provided at the bottom of the square frame (11); A telescopic mechanism is slidably mounted on the inner wall of the circular groove, the telescopic mechanism comprising a knife rod (14), a connecting rod (15) is rotatably mounted on the inner wall of the knife rod (14), a torsion spring is sleeved on the side wall of the connecting rod (15), and a concave disc (16) is fixedly mounted on the side wall of the connecting rod (15).

2. A retractable screwdriver bar assembly as claimed in claim 1, characterized in that: The side wall of the concave disc (16) is provided with a square groove (17); Wherein, a mounting rod (18) is fixedly mounted on the side wall of the concave disc (16).

3. A retractable screwdriver bar assembly as claimed in claim 2, characterized in that: A sliding rod (19) is fixedly mounted on the inner wall of the mounting rod (18); Wherein, a fixing block (21) is fixedly mounted on the side wall of the knife rod (14).

4. A retractable screwdriver bar assembly as claimed in claim 3, characterized in that: A spring sheet (22) is fixedly mounted on the side wall of the fixed block (21); Wherein, a T-shaped groove (23) is provided on the side wall of the knife rod (14).

5. A retractable screwdriver bar assembly as claimed in claim 4, characterized in that: A magnet (24) is fixedly installed inside the knife rod (14); A T-shaped block (25) is slidably installed inside the T-shaped groove (23).

6. A retractable screwdriver bar assembly as claimed in claim 5, characterized in that: A cutter head (26) is fixedly mounted on the bottom of the T-shaped block (25); Wherein, a handle (27) is fixedly mounted on the side wall of the square frame (11).

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