Screwdriver with tool bit replacement structure
By incorporating an adjustment device within the screwdriver handle, the angle between the screwdriver head and the handle can be adjusted, solving the problem of high force requirements when disassembling and tightening screws, and improving the screwdriver's flexibility and convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2026-03-24
AI Technical Summary
Existing screwdrivers require significant force to remove or tighten screws, leading to hand muscle soreness and reduced usability.
A screwdriver with a replaceable tip structure was designed. By incorporating an adjustment device in the handle body, including a circular block, a spring, and a U-shaped rod, the angle between the tip and the handle body can be adjusted, enabling the tip and handle body to rotate vertically or horizontally, thus enhancing the flexibility of use.
The adjustment mechanism reduces the force required to remove and tighten screws, improves the flexibility and convenience of using screwdrivers, and reduces hand fatigue.
Smart Images
Figure CN224027539U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screwdriver technology, and in particular to a screwdriver with a replaceable tip structure. Background Technology
[0002] A screwdriver is a common tool used to tighten screws into place. The screwdriver tip can be Phillips head or flat head. Some screwdrivers have a screwdriver tip that is inserted into the handle, allowing the screwdriver to change the shape of the tip as needed.
[0003] When using a screwdriver, insert the screwdriver tip into the screw's tail to engage the tip, then rotate the screwdriver to control the screw's rotation. For screwdrivers with tighter connections, more force is required when rotating the handle laterally. When continuously using a screwdriver to remove screws, holding the handle in one direction for extended periods can cause temporary muscle soreness, reducing the screwdriver's usability. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a screwdriver with a replaceable tip structure.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a screwdriver with a replaceable blade structure, comprising a handle body, a head rod provided at one end of the handle body, a slot provided at one end of the head rod, a blade being slidably inserted into the inner wall of the slot, and an adjustment device provided inside the handle body for adjusting the angle between the head rod and the handle body to facilitate the control of the rotation of the handle body and the head rod.
[0006] The effect achieved by the above components is as follows: When using a screwdriver, the blade can be pulled out from one end of the head bar to replace different types of blades. Then, the end of the blade away from the blade tip is inserted into the slot on the outer surface of the head bar to mount the blade on one end of the head bar. The blade tip at one end of the blade is inserted into the groove at the tail of the screw. Rotating the handle controls the rotation of the head bar and the blade to install or remove screws.
[0007] Preferably, the adjusting device includes a circular block, and a circular groove is formed inside the handle. The circular block slides on the inner wall of the circular groove. A spring is provided at one end of the circular block. The two ends of the spring are fixedly connected to one side of the inner wall of the circular groove and one side of the circular block, respectively. A U-shaped rod is fixedly connected to the side of the circular block away from the spring. A protrusion is rotatably connected to one end of the U-shaped rod. The protrusion is fixedly connected to one end of the head rod, and the head rod slides on the inner wall of the circular groove.
[0008] The effect achieved by the above components is as follows: By setting the protrusion, when using a screwdriver, if the screw connection to be removed is relatively tight, the head rod can be pulled to control the head rod to slide outward on the inner wall of the circular groove. The U-shaped rod drives the circular block to slide outward on the inner wall of the circular groove and stretches the spring, so that the protrusion at one end of the head rod is exposed inside the circular groove. Then, push the head rod and the protrusion to rotate at one end of the U-shaped rod. Releasing the head rod and the spring returning to its original state will pull the circular block and the U-shaped rod to move into the circular groove, so that one side of the protrusion is close to one end of the handle and perpendicular to the handle. Then, you can hold the outer surface of the handle and push the handle horizontally to control the rotation of the head rod and the blade body, so as to unscrew the screw in a more effortless way. When it is necessary to make the head rod and the handle body on the same horizontal line, pull the head rod outward to control the protrusion to move away from the handle body until there is enough room for rotation. Then rotate the head rod to align one end of the protrusion with the position of the circular groove. Releasing the head rod and the spring returning to its original state will pull the head rod and the protrusion back into the handle body.
[0009] Preferably, the inner size of the circular groove is slightly larger than the outer diameter of the spring.
[0010] The effect achieved by the above components is that when the circular block moves and causes the spring to deform, the outer surface of the spring will fit against the inner wall of the circular groove, thus avoiding the outer surfaces of the spring from overlapping and affecting normal use as much as possible.
[0011] Preferably, an auxiliary groove is provided on one side of the protrusion, and protrusions are provided on both sides of the inner wall of the auxiliary groove.
[0012] The effect achieved by the above components is that when the head rod is pulled and rotated so that the side of the protrusion with the auxiliary groove is attached to one end of the handle, the protrusions on both sides of the inner wall of the auxiliary groove make it difficult for the one end of the handle to slip when it contacts the outer surface of the protrusion.
[0013] Preferably, positioning grooves are provided on both sides of the inner wall of the circular groove, the length of the positioning groove is less than half the length of the circular groove, and positioning blocks are fixedly connected to both sides of the U-shaped rod, and the positioning blocks slide on the inner wall of the positioning groove.
[0014] The effect achieved by the above components is as follows: When the screwdriver is used normally, when the screwdriver body is inserted downwards into the screw tail, the head rod is subjected to force, causing the round block and U-shaped rod to move upwards inside the round groove. The positioning block will slide upwards on the inner wall of the positioning groove. The positioning groove and positioning block limit the range of movement of the round block in the round groove, and prevent the round block from moving too far towards the spring and causing damage to the spring.
[0015] Preferably, a plurality of protruding strips are fixedly connected to the outer surface of the head rod, the protruding strips being circumferentially distributed on the outer surface of the head rod, and the protruding strips being made of rubber.
[0016] The effect achieved by the above-mentioned components is that by setting the rubber protrusions, the head rod can make a tighter contact with the inner wall of the circular groove when it is inside the groove, and the head rod is less likely to wobble when the screwdriver is used normally.
[0017] Preferably, the outer surface of the handle is provided with an auxiliary device, the auxiliary device including a groove block, the outer surface of the groove block having a plurality of storage grooves, a bolt threaded to one side of the top of the inner wall of the groove block, and a positioning hole being provided on one side of the handle.
[0018] The aforementioned components achieve the following effects: When carrying and using a screwdriver, the slotted block can be placed on the outer surface of the handle at the top of the handle. The position of the slotted block can be moved so that the position of one end of the bolt is aligned with the position of the positioning hole on the outer surface of the handle. Then, the bolt can be rotated to control the bolt to move on the inner wall of the slotted block, inserting one end into the interior of the positioning hole and fixing the slotted block to the outer surface of the handle. One end of the spare screwdriver can be inserted into the storage slot on the outer surface of the slotted block for temporary storage, making it easy to retrieve and use, thus improving the convenience of using the screwdriver.
[0019] Preferably, an elastic rope is fixedly connected to one side of the groove block, and the end of the elastic rope away from the groove block is fixedly connected to one end of the bolt.
[0020] The effect achieved by the above components is that by setting elastic ropes, the bolts can always be fixed to the top side of the slot block, making it convenient to pick up the bolts when installing auxiliary devices and preventing the bolts from falling off and being lost.
[0021] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0022] In this invention, by setting an adjustment device, when using a screwdriver, the movement of the circular block inside the circular groove can be controlled by pulling the head rod, so that the protrusion at one end of the head rod extends out of the circular groove. By rotating the head rod, one side of the protrusion is attached to one end of the handle so that the head rod and the handle are perpendicular to each other. The handle is rotated laterally to control the rotation of the head rod and the screwdriver body. This makes using the screwdriver less strenuous and improves the flexibility of the screwdriver. Attached Figure Description
[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0024] Figure 2 This is a three-dimensional structural diagram of the blade body of this utility model;
[0025] Figure 3 This is a partial cross-sectional three-dimensional structural diagram of the handle of this utility model;
[0026] Figure 4 This is a three-dimensional structural diagram of the U-shaped rod of this utility model;
[0027] Figure 5This is a three-dimensional structural diagram of the groove block of this utility model.
[0028] Legend: 1. Handle; 2. Adjustment device; 3. Auxiliary device; 4. Head rod; 5. Slot; 6. Blade body; 21. Circular groove; 22. Circular block; 23. Spring; 24. U-shaped rod; 25. Protrusion; 26. Auxiliary groove; 27. Positioning block; 28. Positioning groove; 29. Protrusion; 31. Positioning hole; 32. Bolt; 33. Groove block; 34. Storage groove; 35. Elastic rope. Detailed Implementation
[0029] Example 1, as Figure 1-3 As shown, a screwdriver with a replaceable tip structure includes a handle 1, a tip bar 4 at one end of the handle 1, a slot 5 at one end of the tip bar 4, and a blade 6 slidably inserted into the inner wall of the slot 5. An adjustment device 2 is provided inside the handle 1 to adjust the angle between the tip bar 4 and the handle 1, facilitating the rotation of the handle 1 and the tip bar 4. When using the screwdriver, the blade 6 can be pulled out from one end of the tip bar 4 to replace different types of tips. The end of the blade 6 furthest from the tip is then inserted into the slot 5 on the outer surface of the tip bar to mount the blade 6 onto one end of the tip bar 4. The tip of the blade 6 is then inserted into the groove at the tail of the screw. Rotating the handle 1 controls the rotation of the tip bar 4 and the blade 6 to install and remove screws.
[0030] Reference Figure 1-4As shown, in this embodiment: the adjusting device 2 includes a circular block 22, and a circular groove 21 is provided inside the handle 1. The circular block 22 slides on the inner wall of the circular groove 21. A spring 23 is provided at one end of the circular block 22. The two ends of the spring 23 are fixedly connected to one side of the inner wall of the circular groove 21 and one side of the circular block 22, respectively. A U-shaped rod 24 is fixedly connected to the side of the circular block 22 away from the spring 23. A protrusion 25 is rotatably connected to one end of the U-shaped rod 24. The protrusion 25 is fixedly connected to one end of the head rod 4. The head rod 4 slides inside the circular groove 21. The screwdriver slides along the inner wall of the groove 21 by using a protrusion 25. If the screws being removed are tightly connected, the screwdriver head 4 can be pulled to slide outwards along the inner wall of the groove 21. This causes the U-shaped rod 24 to slide the circular block 22 outwards along the inner wall of the groove 21, stretching the spring 23. This exposes the protrusion 25 at one end of the screwdriver head 4 inside the groove 21. Then, the screwdriver head 4 and protrusion 25 are pushed to rotate at one end of the U-shaped rod 24. Releasing the screwdriver head 4 and restoring the spring 23 to its original position pulls the circular block 22 and the U-shaped rod 24 back into the groove 21. 1. Move the internal mechanism so that one side of the protrusion 25 is pressed against one end of the handle 1 and perpendicular to the handle 1. Then, you can hold the outer surface of the handle 1 and push it laterally to control the rotation of the head lever 4 and the blade 6, so as to unscrew the screw more easily. When the head lever 4 and the handle 1 are on the same horizontal line, pull the head lever 4 outward to control the protrusion 25 to move away from the handle 1 until there is enough room for rotation. Then rotate the head lever 4 so that one end of the protrusion 25 is aligned with the position of the circular groove 21. Release the head lever 4 and the spring will release the screw. Spring 23 returns to its original state, pulling the head rod 4 and protrusion 25 into the handle 1. By setting the adjustment device 2, when using the screwdriver, the movement of the round block 22 inside the round groove 21 can be controlled by pulling the head rod 4, so that the protrusion 25 at one end of the head rod 4 extends out of the round groove 21. Rotating the head rod 4 will make one side of the protrusion 25 fit against one end of the handle 1, so that the head rod 4 and the handle 1 are perpendicular to each other. Rotating the handle 1 laterally controls the rotation of the head rod 4 and the blade 6, making it easier to use the screwdriver and improving the flexibility of the screwdriver.
[0031] Reference Figure 2-4 As shown in this embodiment: the internal size of the circular groove 21 is slightly larger than the outer diameter of the spring 23. When the circular block 22 moves and causes the spring 23 to deform, the outer surface of the spring 23 will adhere to the inner wall of the circular groove 21, so as to avoid the outer surfaces of the spring 23 overlapping and affecting normal use as much as possible. An auxiliary groove 26 is provided on one side of the protrusion 25. The inner wall of the auxiliary groove 26 is provided with protrusions on both sides. When the head rod 4 is pulled and rotated so that the side of the protrusion 25 with the auxiliary groove 26 adheres to one end of the handle 1, the protrusions on both sides of the inner wall of the auxiliary groove 26 make it difficult for the one end of the handle 1 to slip when it contacts the outer surface of the protrusion 25.
[0032] Reference Figure 2-4As shown in this embodiment: Positioning grooves 28 are provided on both sides of the inner wall of the circular groove 21. The length of the positioning grooves 28 is less than half the length of the circular groove 21. Positioning blocks 27 are fixedly connected to both sides of the U-shaped rod 24. The positioning blocks 27 slide on the inner wall of the positioning groove 28. When using a screwdriver normally, when the screwdriver body 6 is inserted downwards into the screw tail, the screw head 4 is subjected to force, causing the circular block 22 and the U-shaped rod 24 to move upwards inside the circular groove 21. The positioning blocks 27 will slide upwards on the inner wall of the positioning groove 28, passing through the positioning groove 28. 8 and positioning block 27 restrict the movement range of round block 22 in round groove 21, so as to avoid the round block 22 moving too far in the direction of spring 23 and causing damage to spring 23. Several protrusions 29 are fixedly connected to the outer surface of head rod 4. The protrusions 29 are distributed in a circle on the outer surface of head rod 4. The protrusions 29 are made of rubber. By setting the protrusions 29 of rubber material, the head rod 4 is in closer contact with the inner wall of round groove 21 when it is located inside round groove 21. The head rod 4 is not easy to shake when using screwdriver normally.
[0033] Reference Figure 1 , Figure 3 and Figure 5 As shown in this embodiment: an auxiliary device 3 is provided on the outer surface of the handle 1. The auxiliary device 3 includes a slot 33. The outer surface of the slot 33 has several storage slots 34. A bolt 32 is threadedly connected to one side of the top of the inner wall of the slot 33. A positioning hole 31 is provided on one side of the handle 1. When carrying and using the screwdriver, the slot 33 can be placed on the outer surface of the handle 1 at the top. The position of the slot 33 can be moved so that the position of one end of the bolt 32 is aligned with the position of the positioning hole 31 on the outer surface of the handle 1. Then, the bolt 32 can be rotated to control the movement of the bolt 32 on the inner wall of the slot 33 to move a screwdriver. The end is inserted into the positioning hole 31 to fix the slot block 33 to the outer surface of the handle 1. One end of the spare screwdriver body 6 can be inserted into the storage slot 34 on the outer surface of the slot block 33 for temporary storage, making it easy to take out and use, and improving the convenience of using the screwdriver. An elastic rope 35 is fixedly connected to one side of the slot block 33. The end of the elastic rope 35 away from the slot block 33 is fixedly connected to one end of the bolt 32. By setting the elastic rope 35, the bolt 32 can always be fixed to the top side of the slot block 33, making it easy to take out the bolt 32 when installing the auxiliary device 3 and preventing the bolt 32 from falling and being lost.
[0034] Working principle: When carrying and using the screwdriver, the slotted block 33 can be placed on the outer surface of the handle 1 at the top. Move the slotted block 33 to align one end of the bolt 32 with the positioning hole 31 on the outer surface of the handle 1. Then rotate the bolt 32 to move it along the inner wall of the slotted block 33, inserting one end into the positioning hole 31 to fix the slotted block 33 to the outer surface of the handle 1. One end of the spare screwdriver body 6 can be temporarily stored in the storage slot 34 on the outer surface of the slotted block 33. When using the screwdriver, the screwdriver body 6 can be pulled out from one end of the head bar 4. Different styles of screwdriver bodies 6 can be taken out from the storage slot 34. Insert the end of the screwdriver body 6 away from the tip into the slot 5 on the outer surface of the head bar to attach the screwdriver body 6 to one end of the head bar 4. Insert the tip of the screwdriver body 6 into the groove at the tail of the screw. Rotate the handle 1 to control the head bar 4 and the screwdriver body 6 to rotate and remove screws. If the screw to be removed is tightly connected, the head bar 4 can be pulled to control the head bar 4 in the round slot. The inner wall of 21 slides outward, driving the round block 22 to slide outward on the inner wall of the circular groove 21 via the U-shaped rod 24, thus stretching the spring 23. This causes the protrusion 25 at one end of the head rod 4 to protrude into the circular groove 21. Then, pushing the head rod 4 and the protrusion 25 to rotate at one end of the U-shaped rod 24, releasing the head rod 4 and restoring the spring 23 to its original state, pulls the round block 22 and the U-shaped rod 24 into the circular groove 21, causing one side of the protrusion 25 to adhere tightly to one end of the handle 1 and be perpendicular to the handle 1. Then... By gripping the outer surface of the handle 1 and pushing it laterally, the head rod 4 and the blade 6 are rotated. This allows for easier unscrewing of the screws. When the head rod 4 and the handle 1 are on the same horizontal line, pull the head rod 4 outward to move the protrusion 25 away from the handle 1 until there is enough room to rotate. Then rotate the head rod 4 so that one end of the protrusion 25 is aligned with the position of the circular groove 21. Release the head rod 4 and the spring 23 will restore it to its original state. Pull the head rod 4 and the protrusion 25 back into the handle 1.
[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.
Claims
1. A screwdriver with a replaceable tip structure, comprising a handle (1), characterized in that: One end of the handle (1) is provided with a head rod (4), and one end of the head rod (4) is provided with a slot (5). The inner wall of the slot (5) is slidably inserted with a knife body (6). The inside of the handle (1) is provided with an adjustment device (2) for adjusting the angle between the head rod (4) and the handle (1) to facilitate the control of the rotation of the handle (1) and the head rod (4).
2. A screwdriver with a replaceable tip structure according to claim 1, characterized in that: The adjusting device (2) includes a round block (22). A round groove (21) is provided inside the handle (1). The round block (22) slides on the inner wall of the round groove (21). A spring (23) is provided at one end of the round block (22). The two ends of the spring (23) are fixedly connected to one side of the inner wall of the round groove (21) and one side of the round block (22), respectively. A U-shaped rod (24) is fixedly connected to the side of the round block (22) away from the spring (23). A protrusion (25) is rotatably connected to one end of the U-shaped rod (24). The protrusion (25) is fixedly connected to one end of the head rod (4). The head rod (4) slides on the inner wall of the round groove (21).
3. A screwdriver with a replaceable tip structure according to claim 2, characterized in that: The internal size of the circular groove (21) is slightly larger than the outer diameter of the spring (23).
4. A screwdriver with a replaceable tip structure according to claim 3, characterized in that: An auxiliary groove (26) is provided on one side of the protrusion (25), and protrusions are provided on both sides of the inner wall of the auxiliary groove (26).
5. A screwdriver with a replaceable tip structure according to claim 4, characterized in that: The inner wall of the circular groove (21) is provided with positioning grooves (28) on both sides. The length of the positioning groove (28) is less than half the length of the circular groove (21). Positioning blocks (27) are fixedly connected to both sides of the U-shaped rod (24). The positioning blocks (27) slide on the inner wall of the positioning groove (28).
6. A screwdriver with a replaceable tip structure according to claim 5, characterized in that: The outer surface of the head rod (4) is fixedly connected with several protrusions (29), which are distributed circumferentially on the outer surface of the head rod (4) and are made of rubber.
7. A screwdriver with a replaceable tip structure according to claim 6, characterized in that: An auxiliary device (3) is provided on the outer surface of the handle (1). The auxiliary device (3) includes a groove block (33). Several storage grooves (34) are opened on the outer surface of the groove block (33). A bolt (32) is threadedly connected to one side of the inner wall top of the groove block (33). A positioning hole (31) is opened on one side of the handle (1).
8. A screwdriver with a replaceable tip structure according to claim 7, characterized in that: An elastic rope (35) is fixedly connected to one side of the groove block (33), and the end of the elastic rope (35) away from the groove block (33) is fixedly connected to one end of the bolt (32).