Multi-section type adjusting structure of bit

Abstract

The utility model discloses a multi-section type adjusting structure of a screwdriver bit, which relates to the technical field of screwdriver bits and comprises an extension rod, the screwdriver bit is fixedly connected to one side of the extension rod, a mounting pipe is slidably sleeved on one side of the surface of the extension rod, and sliding grooves are formed in the surface of the mounting pipe in an annular array mode. And sliding blocks are slidably connected into the two sliding grooves, abutting rods are slidably connected to one sides of the two sliding blocks in an inserted mode, and elastic rods are attached to one ends of the abutting rods. Through the arrangement of the mounting pipe, the limiting groove, the clamping mechanism and other structures, when the length of the screwdriver head needs to be adjusted, a hollow ring is pushed to enable two abutting rods to push an elastic rod to be bent, so that a limiting rod moves and is separated from a limiting groove, and a sliding block and a limiting plate are not clamped any more; and the sliding block can drive the abutting plate to slide in the mounting pipe, so that the extension rod is driven to slide in the mounting pipe.

Description

Technical Field

[0001] The utility model belongs to the technical field of screwdriver bits, and particularly relates to a multi-stage adjustment structure of a screwdriver bit. Background Art

[0002] A screwdriver bit usually refers to a screwdriver head installed on a hand drill or electric hammer to tighten screws. An electric screwdriver bit is an electric screwdriver used to tighten or loosen screws. It is a small electric tool. The screwdriver bits can be divided into flat head, cross head, Pozidriv, star head, square head, hexagonal head, Y-shaped head, etc. according to different head shapes. Among them, flat head and cross head are the most commonly used in life. Hexagonal heads are not used much. Hexagonal wrenches are often used. For example, many screws on some machines have hexagonal holes, which are convenient for multi-angle force.

[0003] Most of the existing screwdriver bits are generally fixed structures when in use, so that the screwdriver bits are fixed on the hand electric drill or the electric hammer, and the length cannot be adjusted, which limits the use range of the screwdriver bits. When the screwdriver bits are used in different situations, screwdriver bits of different lengths need to be replaced for operation, thereby increasing the workload of the staff and reducing the efficiency of the use of the screwdriver bits. Therefore, a multi-stage adjustment structure of the screwdriver bit is proposed. Utility Model Content

[0004] The utility model aims to provide a multi-stage adjustment structure of a screwdriver bit, which solves the problem that the existing multi-stage adjustment structure of a screwdriver bit needs to be replaced with screwdriver bits of different lengths for operation when the screwdriver bit is used in different situations, thereby increasing the workload of the staff and reducing the efficiency of using the screwdriver bit.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model discloses a multi-stage adjustment structure of a screwdriver bit, comprising an extension rod, one side of the extension rod is fixedly connected with a screwdriver bit, one side of the surface of the extension rod is slidably sleeved with a mounting tube, the surface of the mounting tube is provided with a sliding groove in an annular array, wherein two sliding grooves are slidably connected with sliding blocks inside, one side of the two sliding blocks are slidably inserted with a clamping rod, one end of the clamping rod is fitted with an elastic rod, one end of the elastic rod is fixedly connected with a limiting rod, the limiting rod is slidably connected with the sliding block, the elastic rod is movably installed inside the sliding block, the surfaces of the two sliding blocks are slidably inserted with a limiting plate, the surface of the limiting plate is provided with a limiting groove corresponding to the limiting rod in a path array, the limiting plate is fixedly connected to the inside of the mounting tube, the opposite sides of the two sliding blocks are jointly provided with a clamping mechanism, and the other side of the surface of the extension rod is provided with a protective mechanism.

[0007] Furthermore, one end of the two clamping rods is commonly fixedly connected with a hollow ring, and the two inner walls of the hollow ring are fixedly connected with connecting blocks that are slidably connected to the corresponding sliding grooves, and the opposite sides of the two connecting blocks are commonly fixedly connected with a clamping plate that is slidably connected to the inside of the mounting tube, and the clamping plate is fitted with one side of the extension rod.

[0008] Furthermore, the clamping mechanism includes a clamping ring fixedly connected to the opposite sides of the two sliding blocks, the inner arc surface of the clamping ring is provided with clamping grooves in a ring array, several of the clamping grooves are slidably connected to the inside thereof with clamping balls, and the surface of each of the clamping balls is fixedly connected to a clamping spring corresponding to the clamping groove.

[0009] Furthermore, each of the clamping springs is slidably plugged with a connecting rope, several of the connecting ropes are fixedly connected to the clamping plate, the connecting ropes are fixedly connected to the clamping ball, the surface of the extension rod is provided with plug-in grooves in a circular array, and the clamping ball corresponds to the plug-in grooves.

[0010] Furthermore, reset springs are fixedly connected to both edges of one side of the clamping rod, the two reset springs are fixedly connected to the inside of the sliding block, the hollow ring is slidably connected to the surface of the mounting tube through the connecting block, and the limit plate is slidably connected to the clamping plate.

[0011] Furthermore, the protective mechanism includes a hollow tube slidably connected to the other side of the extension rod surface, adjustment rods are slidably inserted on both sides of the inside of the hollow tube, a limiting mechanism is installed on the surface of the adjustment rod, and connecting grooves are opened in a path array on both sides of the surface of the hollow tube, and an unlocking block is slidably inserted inside the connecting groove.

[0012] Furthermore, elastic pads are fixedly connected to both sides of the lower surface of the unlocking block, and the two elastic pads are fixedly connected to the hollow tube. The unlocking block corresponds to the adjusting rod, and the two adjusting rods are respectively fixedly connected to the two edges of one end of the mounting tube.

[0013] Furthermore, the limiting mechanism includes an elastic block fixedly connected to the inside of the adjusting rod, one end of the elastic block is fixedly connected to a protective rod slidably connected to the adjusting rod, the protective rod corresponds to the connecting groove, and the protective rod corresponds to the unlocking block.

[0014] The utility model has the following beneficial effects:

[0015] By setting the structures such as the mounting tube, the sliding block, the abutting rod, the elastic rod, the limiting plate, the limiting groove and the clamping mechanism, it is achieved that when it is necessary to adjust the length of the screwdriver bit, the hollow ring is pushed so that the two abutting rods push the elastic rod to bend, thereby causing the limiting rod to move, causing the limiting rod to disengage from the limiting groove, so that the sliding block and the limiting plate are no longer clamped, so that the sliding block can drive the abutting plate to slide inside the mounting tube, thereby driving the extension rod to slide inside the mounting tube, and then the extension rod is limited by the mutual cooperation of the elastic rod and the reset spring sheet and other structures, so that not only the length of the extension rod and the screwdriver bit can be adjusted, but also the screwdriver bit can be automatically clamped after the adjustment, thereby avoiding the operation of replacing screwdriver bits of different lengths, and by setting the protective mechanism, not only the screwdriver bit can be protected, but also the screwdriver bit can be adjusted in multiple stages, which solves the problem that when the screwdriver bit is used in different situations in the prior art, it is necessary to replace screwdriver bits of different lengths for operation, thereby increasing the workload of the staff and reducing the efficiency of the screwdriver bit use;

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the partially disassembled structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the disassembled structure of the extension rod, the sliding block and the clamping mechanism of the utility model;

[0021] Figure 4 For the utility model Figure 3 The enlarged structural diagram at A in the middle;

[0022] Figure 5 It is a schematic diagram of the partially disassembled structure of the protection mechanism of the utility model.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Extension rod; 2. Batch bit; 3. Mounting tube; 4. Sliding groove; 5. Sliding block; 6. Clamping rod; 7. Elastic rod; 8. Limiting rod; 9. Limiting plate; 10. Limiting groove; 11. Hollow ring; 12. Connecting block; 13. Clamping plate; 14. Snap ring; 15. Snap groove; 16. Snap ball; 17. Snap spring; 18. Connecting rope; 19. Plug-in groove; 20. Reset spring; 21. Hollow tube; 22. Adjusting rod; 23. Connecting groove; 24. Unlocking block; 25. Elastic pad; 26. Elastic block; 27. Protective rod. DETAILED DESCRIPTION

[0025] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0026] 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. 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.

[0027] See also Figure 1-Figure 5As shown, the utility model is a multi-stage adjustment structure of a screwdriver bit, comprising an extension rod 1, a screwdriver bit 2 is fixedly connected to one side of the extension rod 1, a mounting tube 3 is slidably sleeved on one side of the surface of the extension rod 1, a sliding groove 4 is provided on the surface of the mounting tube 3 in an annular array, wherein two sliding grooves 4 are slidably connected to the inside of each sliding groove, and a clamping mechanism is commonly installed on the opposite sides of the two sliding blocks 5, the clamping mechanism comprises a clamping ring 14 fixedly connected to the opposite sides of the two sliding blocks 5, the hollow ring 11 is pulled backward so that the hollow ring 11 is away from the sliding block 5, so that the clamping plate 13 slides inside the mounting tube 3, the inner arc surface of the clamping ring 14 is provided with a clamping groove 15 in an annular array, a plurality of clamping grooves 15 are slidably connected to the inside of each clamping ball 16, and a clamping spring 17 corresponding to the clamping groove 15 is fixedly connected to the surface of each clamping ball 16, and the elastic force of the clamping spring 17 allows the clamping ball 16 to be The extension rod 1 is automatically reset, thereby facilitating the secondary installation of the extension rod 1. A connecting rope 18 is slidably inserted inside each clamping spring 17. Several connecting ropes 18 are fixedly connected to the abutting plate 13. The connecting rope 18 is pulled to move, so that the clamping ball 16 is stored in the clamping groove 15, so that the clamping spring 17 is compressed, so that the clamping ball 16 is disengaged from the plug-in groove 19, so that the extension rod 1 is disengaged from the clamping ring 14, so that the extension rod 1 and the mounting tube 3 can be disassembled, which is convenient for replacing the extension rod 1 and the screwdriver 2. The connecting rope 18 is fixedly connected to the clamping ball 16. The surface of the extension rod 1 is provided with a plug-in groove 19 in an annular array. Through the mutual cooperation of the clamping mechanism and the plug-in groove 19, the extension rod 1 is clamped into the inside of the mounting tube 3, so that the screwdriver 2 is more stable when in use. The clamping ball 16 corresponds to the plug-in groove 19. One side of the two sliding blocks 5 is slidably inserted with a clamping rod 6.

[0028] The two edges of one side of the clamping rod 6 are fixedly connected with reset springs 20, and the two reset springs 20 are fixedly connected to the inside of the sliding block 5. The elastic force of the reset springs 20 drives the clamping rod 6 to automatically reset, thereby pushing the hollow ring 11 to automatically reset, which is convenient for the secondary adjustment of the extension rod 1, so that the device is more convenient to use. One end of the two clamping rods 6 is commonly fixedly connected with the hollow ring 11, and the two inner walls of the hollow ring 11 are fixedly connected with the connecting blocks 12 slidably connected to the corresponding sliding grooves 4. The hollow ring 11 is slidably connected to the mounting tube 3 through the connecting block 12. The surface, the opposite sides of the two connecting blocks 12 are fixedly connected with a clamping plate 13 slidably connected to the inside of the mounting tube 3, the limiting plate 9 is slidably connected to the clamping plate 13, the clamping plate 13 is fitted with one side of the extension rod 1, one end of the clamping rod 6 is fitted with an elastic rod 7, one end of the elastic rod 7 is fixedly connected with a limiting rod 8, and the limiting rod 8 is automatically reset by the elastic force of the elastic rod 7, so that one end of the limiting rod 8 passes through the sliding block 5 and is inserted into the inside of the limiting groove 10, so that the limiting rod 8 is clamped with the limiting groove 10, so that the sliding block 5 is clamped with the limiting plate 9, so that the sliding The movable block 5 is clamped on the surface of the mounting tube 3, the limiting rod 8 is slidably connected with the sliding block 5, and the elastic rod 7 is movably installed inside the sliding block 5. The surfaces of the two sliding blocks 5 are slidably inserted with the limiting plates 9. The surfaces of the limiting plates 9 are provided with limiting grooves 10 corresponding to the limiting rods 8 in a path array, pushing the hollow ring 11 to slide on the surface of the mounting tube 3, so that the two tightening rods 6 are inserted into the inside of the sliding block 5 to slide, so that the tightening rod 6 pushes the elastic rod 7 to bend, so that the elastic rod 7 pulls the limiting rod 8 to slide inside the sliding block 5, so that the limiting rod 8 is disengaged from the limiting groove 10 The limit plate 9 is fixedly connected to the inside of the mounting tube 3. When the limit rod 8 is disengaged from the limit groove 10, the sliding block 5 is no longer engaged with the limit plate 9, so that the sliding block 5 can drive the clamping plate 13 to slide inside the mounting tube 3, pushing the extension rod 1 to slide synchronously, so that the extension rod 1 drives the screwdriver bit 2 away from the mounting tube 3, so as to adjust the length of the screwdriver bit 2. A protective mechanism is installed on the other side of the surface of the extension rod 1, and the protective mechanism includes a hollow tube 21 slidably connected to the other side of the surface of the extension rod 1, and both sides of the hollow tube 21 are slidably plugged with adjustment rods 22;

[0029] The surface of the adjusting rod 22 is installed with a limiting mechanism. Both sides of the surface of the hollow tube 21 are provided with connecting grooves 23 in a path array. The inside of the connecting groove 23 is slidably inserted with an unlocking block 24. Both sides of the lower surface of the unlocking block 24 are fixedly connected with elastic pads 25. The two elastic pads 25 are fixedly connected to the hollow tube 21. The unlocking block 24 corresponds to the adjusting rod 22. The two adjusting rods 22 are respectively fixedly connected to the two edges of one end of the mounting tube 3. The limiting mechanism includes an elastic block 26 fixedly connected to the inside of the adjusting rod 22. One end of the elastic block 26 is fixedly connected to a protective rod 27 that is slidably connected to the adjusting rod 22. The protective rod 27 corresponds to the connecting groove 23, and the protective rod 27 corresponds to the unlocking block 24. When the bit 2 is used, the hollow tube 21 is pushed to move so that the hollow tube 21 slides on the surface of the adjusting rod 22. Through the elastic force of the elastic block 26, the protective rod 27 is inserted into the inside of the connecting groove 23 to limit the hollow tube 21, so that the hollow tube 21 is sleeved on the surface of the bit 2 to protect the bit 2.

[0030] Specifically, when the multi-stage adjustment structure of the screwdriver bit is in use: when the length of the screwdriver bit 2 needs to be adjusted, the hollow ring 11 is pushed to slide on the surface of the mounting tube 3, so that the two abutting rods 6 are inserted into the inner part of the sliding block 5 and slide, so that the abutting rod 6 pushes the elastic rod 7 to bend, so that the elastic rod 7 pulls the limiting rod 8 to slide inside the sliding block 5, so that the limiting rod 8 is disengaged from the limiting groove 10, so that the sliding block 5 is no longer engaged with the limiting plate 9, so that the sliding block 5 can drive the abutting plate 13 to slide inside the mounting tube 3, and push the extension rod 1 to slide synchronously, so that the extension rod 1 drives the screwdriver bit 2 away from the mounting tube 3, so as to adjust the length of the screwdriver bit 2;

[0031] After adjustment, the limit rod 8 is automatically reset by the elastic force of the elastic rod 7, so that one end of the limit rod 8 passes through the sliding block 5 and is inserted into the interior of the limit groove 10, so that the limit rod 8 is clamped with the limit groove 10, so that the sliding block 5 is clamped with the limit plate 9, so that the sliding block 5 is clamped on the surface of the mounting tube 3, so that the extension rod 1 is clamped into the interior of the mounting tube 3 through the mutual cooperation of the clamping mechanism and the plug-in groove 19, so that the batch head 2 is more stable when in use, and at the same time, the elastic force of the reset spring sheet 20 drives the clamping rod 6 to automatically reset, thereby pushing the hollow ring 11 to automatically reset, which is convenient for the secondary adjustment of the extension rod 1, so that the device is more convenient to use;

[0032] When the extension rod 1 and the bit 2 need to be disassembled, the hollow ring 11 is pulled backwards to make the hollow ring 11 away from the sliding block 5, so that the clamping plate 13 slides inside the mounting tube 3, pulling the connecting rope 18 to move, so that the snap-in ball 16 is accommodated in the snap-in groove 15, so that the snap-in spring 17 is compressed, so that the snap-in ball 16 is disengaged from the plug-in groove 19, so that the extension rod 1 is disengaged from the snap-in ring 14, so that the extension rod 1 and the mounting tube 3 can be disassembled, which facilitates the replacement of the extension rod 1 and the bit 2, and the snap-in ball 16 can be automatically reset through the elastic force of the snap-in spring 17, so that the secondary installation of the extension rod 1 is convenient.

[0033] 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.

[0034] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are intended to be exemplary only, and the true scope of the present disclosure is indicated by the following claims.

Claims

1. A multi-stage adjustment structure for a screwdriver bit. Features: The invention comprises an extension rod (1), one side of the extension rod (1) is fixedly connected to a screwdriver bit (2), one side of the surface of the extension rod (1) is slidably sleeved with a mounting tube (3), the surface of the mounting tube (3) is provided with sliding grooves (4) in an annular array, wherein two sliding grooves (4) are slidably connected to the inside of each sliding block (5), one side of each sliding block (5) is slidably plugged with a clamping rod (6), one end of the clamping rod (6) is fitted with an elastic rod (7), and one end of the elastic rod (7) is fixedly connected to a limiting rod (8) ), the limit rod (8) is slidably connected to the sliding block (5), the elastic rod (7) is movably installed inside the sliding block (5), the surfaces of the two sliding blocks (5) are slidably inserted with limit plates (9), the surface of the limit plate (9) is provided with limit grooves (10) corresponding to the limit rod (8) in a path array, the limit plate (9) is fixedly connected to the inside of the mounting tube (3), the opposite sides of the two sliding blocks (5) are jointly installed with a clamping mechanism, and the other side of the surface of the extension rod (1) is installed with a protective mechanism.

2. The multi-stage adjustment structure of a screwdriver according to claim 1, It is characterized in that One end of the two clamping rods (6) is fixedly connected to a hollow ring (11), and the two inner walls of the hollow ring (11) are fixedly connected to connecting blocks (12) slidably connected to the corresponding sliding grooves (4), and the opposite sides of the two connecting blocks (12) are fixedly connected to a clamping plate (13) slidably connected to the inside of the mounting tube (3), and the clamping plate (13) is in contact with one side of the extension rod (1).

3. The multi-stage adjustment structure of a screwdriver according to claim 2, It is characterized in that The clamping mechanism comprises a clamping ring (14) fixedly connected to opposite sides of two sliding blocks (5); the inner arc surface of the clamping ring (14) is provided with clamping grooves (15) in an annular array; a plurality of the clamping grooves (15) are slidably connected to the inside thereof with clamping balls (16); and a clamping spring (17) corresponding to the clamping groove (15) is fixedly connected to the surface of each of the clamping balls (16).

4. The multi-stage adjustment structure of a screwdriver according to claim 3, It is characterized in that A connecting rope (18) is slidably inserted inside each of the clamping springs (17), and a plurality of the connecting ropes (18) are fixedly connected to the abutting plate (13). The connecting ropes (18) are fixedly connected to the clamping balls (16). The surface of the extension rod (1) is provided with plug-in grooves (19) in a circular array, and the clamping balls (16) correspond to the plug-in grooves (19).

5. The multi-stage adjustment structure of a screwdriver bit according to claim 2, It is characterized in that Reset springs (20) are fixedly connected to both edges of one side of the clamping rod (6), and the two reset springs (20) are fixedly connected to the inside of the sliding block (5). The hollow ring (11) is slidably connected to the surface of the mounting tube (3) through the connecting block (12), and the limit plate (9) is slidably connected to the clamping plate (13).

6. The multi-stage adjustment structure of a screwdriver bit according to claim 1, It is characterized in that The protection mechanism comprises a hollow tube (21) slidably connected to the other side of the surface of the extension rod (1), adjustment rods (22) are slidably inserted on both sides of the interior of the hollow tube (21), a limiting mechanism is installed on the surface of the adjustment rod (22), and connection grooves (23) are formed in a path array on both sides of the surface of the hollow tube (21), and unlocking blocks (24) are slidably inserted inside the connection grooves (23).

7. The multi-stage adjustment structure of a screwdriver bit according to claim 6, It is characterized in that Both sides of the lower surface of the unlocking block (24) are fixedly connected with elastic pads (25), and the two elastic pads (25) are fixedly connected to the hollow tube (21). The unlocking block (24) corresponds to the adjustment rod (22), and the two adjustment rods (22) are respectively fixedly connected to the two edges of one end of the mounting tube (3).

8. The multi-stage adjustment structure of a screwdriver bit according to claim 7, It is characterized in that The limiting mechanism comprises an elastic block (26) fixedly connected to the inside of the adjusting rod (22); one end of the elastic block (26) is fixedly connected to a protection rod (27) slidably connected to the adjusting rod (22); the protection rod (27) corresponds to the connecting groove (23); and the protection rod (27) corresponds to the unlocking block (24).

Images