Screwdriver capable of being stacked and extended

Abstract

The utility model provides a screwdriver capable of being stacked and extended, and relates to the field of screwdrivers, the screwdriver comprises a screwdriver handle and a screwdriver main body, through the arrangement of an adjusting extension device, the screwdriver main body can be held firstly and pulled towards one end in the inner wall of a second sliding groove rod according to the use requirement, and then the screwdriver main body is pulled towards the other end in the inner wall of the second sliding groove rod; when the screwdriver body slides to a certain position, the screwdriver body is rotated to a certain angle, the clamping blocks are driven to be clamped into the corresponding clamping holes, and then under the reset action of the springs, the clamping blocks on the outer surface are driven to slide towards one end in the inner wall of the sliding hole in the second sliding groove rod, so that the springs on the inner wall of the second sliding groove rod are stretched open. The clamping block clamped into the clamping hole can be fixed to one end of the clamping hole, the adjusted screwdriver body is limited and fixed, the length of the screwdriver body can be adjusted, the diameter of one end of the screwdriver body can be reduced through stacked adjustment, the screwdriver is made to adapt to different use environments, the applicability is improved, and carrying and using are convenient.

Description

Technical Field

[0001] This utility model relates to the field of screwdrivers, and in particular to a stackable and extendable screwdriver. Background Technology

[0002] A screwdriver is a tool used to tighten or loosen screws. It typically consists of a handle and a metal rod with different shaped cutting tips at the end of the rod to accommodate different types of screws.

[0003] When using a screwdriver to rotate and tighten screws, the shapes of the objects to be installed vary, and the positions of the screws also differ. However, the width and length of one end of the existing screwdriver body are usually fixed. This means that when the screw to be tightened is in a narrow or deep position, the traditional screwdriver body cannot reach it. It is necessary to replace it with a screwdriver body of the appropriate size to continue operating. As a result, when tightening screws in different positions on the same object, it is necessary to carry and use multiple screwdriver bodies of different sizes, making the traditional screwdriver body less applicable and inconvenient to use. Utility Model Content

[0004] The technical problem this invention aims to solve is that when using a screwdriver body to rotate and tighten screws, the shapes of the objects to be installed vary, and the positions of the screws also differ. However, the width and length of one end of the existing screwdriver body are usually fixed. This means that when the screw to be tightened is in a narrow or deep position, the traditional screwdriver body cannot reach it, and a corresponding screwdriver body must be replaced to continue the operation. As a result, when tightening screws in different positions on the same object, it is necessary to carry and use multiple screwdriver bodies of different sizes, making the traditional screwdriver body less applicable and inconvenient to use.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a stackable and extendable screwdriver, including a handle and a screwdriver body. An adjustment and extension device is provided between one end of the handle and one end of the screwdriver body. The adjustment and extension device includes a first sliding rod. A limiting device is provided between one end of the first sliding rod and the inner wall of the handle. The adjustment and extension device can adjust the length of the screwdriver body. At the same time, the diameter of one end of the screwdriver body can be reduced by the stacking adjustment to adapt to different usage environments. The limiting device can limit and fix the first sliding rod on the handle to prevent it from shaking during use.

[0006] Preferably, a second sliding rod is slidably connected to the inner wall of the first sliding rod, and the inner wall of the second sliding rod is slidably connected to one end of the screwdriver body. Both the inner walls of the first and second sliding rods have sliding holes, and both have several locking holes. The inner walls of the locking holes communicate with the inner walls of the sliding holes. Locking blocks are fixedly connected to the outer surfaces of the second sliding rod and the screwdriver body, and these locking blocks are inserted into the inner walls of the sliding holes and locking holes. Springs are rotatably connected to both sides of the second sliding rod, and the other ends of the two springs are fixedly connected to one side of the inner wall of the first sliding rod and one side of the screwdriver body, respectively.

[0007] The effect achieved by the above-mentioned components is as follows: By setting up an adjustment and extension device, during the use of the screwdriver body to rotate and tighten screws, according to the usage requirements, first hold the screwdriver body and pull it to one end in the inner wall of the second sliding rod. This causes the locking block on the outer surface to slide to one end in the inner wall of the sliding hole on the second sliding rod, stretching the spring on the inner wall of the second sliding rod. After sliding to a certain position, rotate the screwdriver body to a certain angle, causing the locking block to engage in the corresponding locking hole. Then, under the reset action of the spring, the locking block engaged in the locking hole can be fixed at one end of the locking hole, limiting and fixing the adjusted screwdriver body. Similarly, the second sliding rod can also be extended and adjusted in the inner wall of the first sliding rod, so that the length of the screwdriver body can be adjusted. Through the layered adjustment, the diameter of one end of the screwdriver body can be reduced, making it suitable for different usage environments, improving applicability, and facilitating carrying and use.

[0008] Preferably, telescopic rods are rotatably connected to both sides of the second slide bar, and the other ends of the two telescopic rods are fixedly connected to one side of the inner wall of the first slide bar and one side of the screwdriver body, respectively. The telescopic rods are sleeved with springs.

[0009] The effect achieved by the above components is that by setting up the telescopic rod, the inner wall of the spring can be supported and reinforced, making it less prone to damage and increasing its service life.

[0010] Preferably, the inner wall of the card hole is symmetrically fixedly connected with a limiting block, and the limiting block is made of rubber.

[0011] The effect achieved by the above components is that by setting the limiting block, the card block inserted into the card hole can be limited a second time, making it less prone to shaking, and the limiting of the second sliding rod and the screwdriver body is more secure and stable.

[0012] Preferably, one end of the first sliding rod is inserted into the inner wall of one end of the handle. The limiting device includes a screw rod and a bolt. A groove is formed on the outer surface of one end of the first sliding rod. A limiting hole is formed on the outer surface of one end of the handle. The inner wall of the limiting hole is connected to the inner wall of the handle. A round shaft is passed through and connected to one end of the screw rod. The two ends of the round shaft are rotatably connected to the two sides of the inner wall of the limiting hole, respectively. A screw block is fixedly connected to the outer surface of one end of the handle. One end of the bolt is screwed into the inner wall of the screw block and the screw rod. One end of the screw rod is inserted into the inner wall of the groove.

[0013] The effect achieved by the above components is as follows: When using the screwdriver body, one end of the first sliding rod can be inserted into the inner wall of one end of the handle. Then, hold the limiting rod and rotate it around the axis to a certain angle so that one end is inserted into the inner wall of the slot. Then, screw one end of the bolt into the inner wall of the screw hole block and the screw hole rod to limit and fix the screw hole rod. This will fix the first sliding rod on the handle, making the screwdriver body less likely to shake or fall off during use, and making it easier to use.

[0014] Preferably, one end of the bolt has a hexagonal cross-section, and the outer surface dimension of the hexagonal end of the bolt is larger than the inner wall dimension of the bolt hole block.

[0015] The effect achieved by the above components is that by setting one end of the bolt into a hexagonal shape, the hexagonal shape has edges and corners, making it more secure when held manually, less prone to slipping, and easier to tighten.

[0016] Preferably, one end of the bolt is fixedly connected to a connecting rope, and one end of the connecting rope is fixedly connected to one side of the bolt hole rod.

[0017] The effect achieved by the above components is that by setting a connecting rope, the bolt can be limited to one side of the screw hole rod, so that it is not easy to lose after it is taken out from the inner wall of the screw hole block and the screw hole rod.

[0018] Preferably, bearings are fixedly connected to the outer surfaces of both ends of the circular shaft, and the outer ring of the bearing is fixedly connected to the inner wall of the limiting hole.

[0019] The effect achieved by the above components is that by setting bearings, rotational wear between the round shaft and the inner wall of the limiting hole can be reduced, making the round shaft easier to rotate and improving its service life.

[0020] The beneficial effects of this utility model are:

[0021] By incorporating an adjustable extension device, during the use of the screwdriver body to rotate and tighten screws, users can first grasp the screwdriver body and pull it towards one end within the inner wall of the second sliding rod. This causes the locking block on the outer surface to slide towards one end within the sliding hole on the second sliding rod, stretching the spring on the inner wall of the second sliding rod. After sliding to a certain position, the screwdriver body is rotated to a certain angle, causing the locking block to engage with the corresponding locking hole. Then, under the reset action of the spring, the locking block can be fixed at one end of the locking hole, limiting and fixing the adjusted screwdriver body. Similarly, the second sliding rod can be extended and adjusted within the inner wall of the first sliding rod to adjust the length of the screwdriver body. Through layered adjustment, the diameter of one end of the screwdriver body can be reduced, making it suitable for different usage environments, improving applicability, and facilitating carrying and use. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 This is a three-dimensional structural diagram of the screwdriver body of this utility model;

[0025] Figure 3 for Figure 2 A three-dimensional schematic diagram of a local structure;

[0026] Figure 4 This is a three-dimensional structural diagram of the first sliding groove rod of this utility model;

[0027] Figure 5 This is a three-dimensional structural diagram of the handle of the knife in this utility model.

[0028] Legend: 1. Handle; 2. Adjustment and extension device; 3. Limiting device; 4. Screwdriver body; 21. First sliding groove rod; 22. Second sliding groove rod; 23. Sliding hole; 24. Locking hole; 25. Spring; 26. Locking block; 27. Limiting block; 28. Telescopic rod; 31. Locking groove; 32. Limiting hole; 33. Threaded rod; 34. Round shaft; 35. Threaded block; 36. Bolt; 37. Connecting rope; 38. Bearing. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Figure 1-5 The screwdriver shown includes a handle 1 and a screwdriver body 4. An adjustable extension device 2 is provided between one end of the handle 1 and one end of the screwdriver body 4. The adjustable extension device 2 includes a first sliding rod 21. A limiting device 3 is provided between one end of the first sliding rod 21 and the inner wall of the handle 1. The adjustable extension device 2 can adjust the length of the screwdriver body 4. At the same time, the diameter of one end of the screwdriver body 4 can be reduced by the stacked adjustment to adapt to different usage environments. The limiting device 3 can limit and fix the first sliding rod 21 on the handle 1 to prevent it from shaking during use.

[0032] Figure 2-4 The inner wall of the first sliding rod 21 shown is slidably connected to the second sliding rod 22. The inner wall of the second sliding rod 22 is slidably connected to one end of the screwdriver body 4. The inner walls of the first sliding rod 21 and the second sliding rod 22 are both provided with sliding holes 23. The inner walls of the first sliding rod 21 and the second sliding rod 22 are both provided with several locking holes 24. The inner walls of the locking holes 24 are connected to the inner walls of the sliding holes 23. The outer surfaces of the second sliding rod 22 and the screwdriver body 4 are both fixedly connected with locking blocks 26. The locking blocks 26 are inserted into the inner walls of the sliding holes 23 and the locking holes 24. The two sides of the second sliding rod 22 are rotatably connected with springs 25. The other ends of the two springs 25 are fixedly connected to one side of the inner wall of the first sliding rod 21 and one side of the screwdriver body 4, respectively. When using the screwdriver body 4 to rotate and tighten screws, depending on the usage requirements, first hold the screwdriver body 4 and pull it towards one end within the inner wall of the second sliding rod 22. This causes the locking block 26 on the outer surface to slide towards one end within the inner wall of the sliding hole 23 on the second sliding rod 22, stretching the spring 25 on the inner wall of the second sliding rod 22. After sliding to a certain position, rotate the screwdriver body 4 to a certain angle, causing the locking block 26 to engage in the corresponding locking hole 24. Then, under the reset action of the spring 25, the locking block 26 engaged in the locking hole 24 can be fixed at one end of the locking hole 24, limiting and fixing the adjusted screwdriver body 4. Similarly, the second sliding rod 22 can be extended and adjusted within the inner wall of the first sliding rod 21 to adjust the length of the screwdriver body 4. Through layered adjustment, the diameter of one end of the screwdriver body 4 can be reduced, making it suitable for different usage environments, improving applicability, and facilitating carrying and use.

[0033] Figure 2-4 The second sliding rod 22 shown has telescopic rods 28 rotatably connected to both sides. The other ends of the two telescopic rods 28 are fixedly connected to one side of the inner wall of the first sliding rod 21 and one side of the screwdriver body 4, respectively. The telescopic rods 28 are sleeved and connected to the spring 25. By setting the telescopic rods 28, the inner wall of the spring 25 can be supported and reinforced, making it less prone to damage and increasing its service life. The inner wall of the locking hole 24 is symmetrically fixedly connected to limit blocks 27, which are made of rubber. By setting the limit blocks 27, the locking block 26 inserted into the locking hole 24 can be secondary limited, making it less prone to shaking, and making the limiting of the second sliding rod 22 and the screwdriver body 4 more secure and stable.

[0034] Figure 5 One end of the first sliding rod 21 shown is inserted into the inner wall of one end of the handle 1. The limiting device 3 includes a screw hole rod 33 and a bolt 36. A groove 31 is opened on the outer surface of one end of the first sliding rod 21. A limiting hole 32 is opened on the outer surface of one end of the handle 1. The inner wall of the limiting hole 32 is connected to the inner wall of the handle 1. A round shaft 34 is passed through and connected to one end of the screw hole rod 33. The two ends of the round shaft 34 are rotatably connected to the two sides of the inner wall of the limiting hole 32, respectively. A screw hole block 35 is fixedly connected to the outer surface of one end of the handle 1. One end of the bolt 36 is screwed into the inner wall of the screw hole block 35 and the screw hole rod 33. One end of the screw hole rod 33 is inserted into the inner wall of the groove 31. When using the screwdriver body 4, one end of the first sliding rod 21 can be inserted into the inner wall of one end of the handle 1. Then, hold the limiting rod and rotate it around the circular shaft 34 to a certain angle so that one end is inserted into the inner wall of the slot 31. Then, screw one end of the bolt 36 into the inner wall of the screw hole block 35 and the screw hole rod 33 to limit and fix the screw hole rod 33. This will fix the first sliding rod 21 on the handle 1, making the screwdriver body 4 less likely to shake or fall off during use, and making it easier to use.

[0035] Figure 5The bolt 36 shown has a hexagonal cross-section at one end, and the outer surface dimension of this hexagonal end is larger than the inner wall dimension of the screw hole block 35. By making one end of the bolt 36 hexagonal, the angular shape makes it more secure to hold manually, less prone to slippage, and easier to tighten. A connecting rope 37 is fixedly connected to one end of the bolt 36, and one end of the connecting rope 37 is fixedly connected to one side of the screw hole rod 33. The connecting rope 37 helps to limit the bolt 36 to one side of the screw hole rod 33, preventing it from being lost after being removed from the screw hole block 35 and the inner wall of the screw hole rod 33. Bearings 38 are fixedly connected to the outer surfaces of both ends of the round shaft 34, and the outer ring of the bearing 38 is fixedly connected to the inner wall of the limiting hole 32. The bearings 38 reduce rotational wear between the round shaft 34 and the inner wall of the limiting hole 32, facilitating the rotation of the round shaft 34 and improving its service life.

[0036] Working principle: When using the screwdriver body 4 to rotate and tighten screws, depending on the usage requirements, first hold the screwdriver body 4 and pull it to one end within the inner wall of the second sliding rod 22. This causes the locking block 26 on the outer surface to slide to one end within the inner wall of the sliding hole 23 on the second sliding rod 22, stretching the spring 25 on the inner wall of the second sliding rod 22. After sliding to a certain position, rotate the screwdriver body 4 to a certain angle, causing the locking block 26 to engage in the corresponding locking hole 24. Then, under the reset action of the spring 25, the locking block 26 engaged in the locking hole 24 can be fixed at one end of the locking hole 24, limiting and fixing the adjusted screwdriver body 4. Similarly, the second sliding rod 22 can be extended and adjusted within the inner wall of the first sliding rod 21 to adjust the length of the screwdriver body 4. Through layered adjustment, the diameter of one end of the screwdriver body 4 can be reduced, making it suitable for different usage environments, improving applicability, and facilitating carrying and use.

[0037] When using the screwdriver body 4, one end of the first sliding rod 21 can be inserted into the inner wall of one end of the handle 1. Then, hold the limiting rod and rotate it around the circular shaft 34 to a certain angle so that one end is inserted into the inner wall of the slot 31. Then, screw one end of the bolt 36 into the inner wall of the screw hole block 35 and the screw hole rod 33 to limit and fix the screw hole rod 33. This will fix the first sliding rod 21 on the handle 1, making the screwdriver body 4 less likely to shake or fall off during use, and making it easier to use.

[0038] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A screwdriver which can be extended in layers, comprising a handle (1) and a screwdriver body (4), characterized in that: The one end of the handle (1) is provided with an adjusting extension device (2) between the one end of the screwdriver body (4), the adjusting extension device (2) comprises a first sliding groove rod (21), the one end of the first sliding groove rod (21) is provided with a limiting device (3) between the inner wall of the handle (1), the adjusting extension device (2) can adjust the length of the screwdriver body (4), at the same time, through the laminated adjustment, the diameter of the one end of the screwdriver body (4) can be reduced, so that it is adapted to different use environments, the limiting device (3) can limit and fix the first sliding groove rod (21) on the handle (1), so that it is not easy to shake during use.

2. A telescoping screwdriver according to claim 1, wherein: The inner wall of the first sliding groove rod (21) is slidably connected with a second sliding groove rod (22), the inner wall of the second sliding groove rod (22) is slidably connected with the one end of the screwdriver body (4), the inner wall of the first sliding groove rod (21) and the inner wall of the second sliding groove rod (22) are both provided with sliding holes (23), the inner wall of the first sliding groove rod (21) and the inner wall of the second sliding groove rod (22) are both provided with a plurality of clamping holes (24), the inner wall of the clamping hole (24) is communicated with the inner wall of the sliding hole (23), the outer surface of the second sliding groove rod (22) and the outer surface of the screwdriver body (4) are both fixedly connected with clamping blocks (26), the clamping blocks (26) are inserted into the inner wall of the sliding hole (23) and the clamping hole (24), the two sides of the second sliding groove rod (22) are both rotatably connected with springs (25), the other ends of the two springs (25) are respectively fixedly connected with the inner wall of the first sliding groove rod (21) and the side of the screwdriver body (4).

3. A screwdriver according to claim 2, wherein: The two sides of the second sliding groove rod (22) are both rotatably connected with telescopic rods (28), the other ends of the two telescopic rods (28) are respectively fixedly connected with the inner wall of the first sliding groove rod (21) and the side of the screwdriver body (4), the telescopic rod (28) is connected with the spring (25) in a sleeved mode.

4. A telescoping screwdriver according to claim 2, wherein: The inner wall of the clamping hole (24) is fixedly connected with a limiting block (27) in a symmetrical mode, the limiting block (27) is made of rubber material.

5. The extendable screwdriver of claim 1, wherein: The one end of the first sliding groove rod (21) is inserted into the inner wall of the one end of the handle (1), the limiting device (3) comprises a threaded hole rod (33) and a bolt (36), the outer surface of the one end of the first sliding groove rod (21) is provided with a clamping groove (31), the outer surface of the one end of the handle (1) is provided with a limiting hole (32), the inner wall of the limiting hole (32) is communicated with the inner wall of the handle (1), the one end of the threaded hole rod (33) is rotatably connected with a circular shaft (34), the two ends of the circular shaft (34) are respectively rotatably connected with the inner wall of the limiting hole (32), the outer surface of the one end of the handle (1) is fixedly connected with a threaded hole block (35), the one end of the bolt (36) is inserted into the inner wall of the threaded hole block (35) and the threaded hole rod (33) in a threaded mode, the one end of the threaded hole rod (33) is inserted into the inner wall of the clamping groove (31).

6. A screwdriver according to claim 5, wherein: The one end of the bolt (36) is hexagonal in cross section, the outer surface size of the one end of the bolt (36) is larger than the inner wall size of the threaded hole block (35).

7. A telescoping screwdriver according to claim 5, wherein: One end of the bolt (36) is fixedly connected with a connecting rope (37), one end of the connecting rope (37) is fixedly connected with one side of the screw hole rod (33).

8. A telescoping screwdriver according to claim 5, wherein: Both ends of the outer surface of the round shaft (34) are fixedly connected with bearings (38), and the outer ring of the bearing (38) is fixedly connected with the inner wall of the limiting hole (32).

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