Telescopic screwdriver

Abstract

The utility model relates to the technical field of screwdrivers, and discloses a telescopic screwdriver which comprises a grip, limiting sliding grooves are formed in the two ends of the inner wall of the grip, an adjusting rod is slidably connected to one end of the inner wall of the grip, one side of the adjusting rod extends to one side of the outer wall of the grip, and a pulley is movably connected to the inner wall of one side of the adjusting rod. A second pulley is movably connected to the inner wall of the side, close to the pulley, of the adjusting rod, the pulley is parallel to the second pulley, a belt is connected between the pulley and the second pulley in a sleeved mode, an extension rod is movably connected to the inner wall of one side of the adjusting rod in a sleeved mode and penetrates through the outer wall of one side of the adjusting rod, and the side, close to the pulley, of the extension rod is fixedly connected to the outer wall of one end of the belt. The telescopic assembly stably slides in the limiting sliding groove in the inner wall of the grip, smoothness and stability of the telescopic process are guaranteed, the use experience of the screwdriver is improved, the length of the screwdriver can be flexibly adjusted according to actual requirements, the applicability is greatly improved, and the screwdriver is more practical.

Description

Technical Field

[0001] This utility model relates to the field of screwdriver technology, specifically a retractable screwdriver. Background Technology

[0002] Screwdrivers, as indispensable tools in mechanical assembly and maintenance, primarily function to tighten or loosen screws. In various work scenarios, such as confined spaces, deep holes, or situations requiring precise screw adjustments, traditional fixed-length screwdrivers often fall short. Therefore, a screwdriver whose length can be flexibly adjusted to meet actual needs is particularly important. This extendable screwdriver can adapt to screw operations at different depths and angles, improving work efficiency and accuracy, making it a much-needed tool in modern industrial maintenance and assembly.

[0003] Traditional screwdrivers typically have a fixed length, making them inflexible and unable to adapt to different work environments. This causes numerous inconveniences during use. For example, in confined spaces, an excessively long screwdriver is difficult to insert, while an excessively short screwdriver may not provide sufficient torque to tighten the screw. Furthermore, traditional screwdrivers are inadequate for precise screw positioning, often requiring multiple attempts and adjustments to find the right spot. These drawbacks not only affect work efficiency but can also damage screws and connectors, reducing the quality and reliability of the work. Therefore, traditional fixed-length screwdrivers can no longer meet the high demands of modern industry for flexibility and precision. To address this, we have proposed a retractable screwdriver. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a retractable screwdriver, which solves the aforementioned problems.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a retractable screwdriver, including a handle, wherein limit grooves are formed at both ends of the inner wall of the handle, and a telescopic component is slidably connected to the inner wall of one end of the handle;

[0006] The telescopic assembly includes an adjusting rod, which is slidably connected to one end of the inner wall of the handle. One side of the adjusting rod extends to one side of the outer wall of the handle. A pulley is movably connected to the inner wall of one side of the adjusting rod. A second pulley is movably connected to the inner wall of the adjusting rod near the pulley. The pulley and the second pulley are parallel. A belt is sleeved between the pulley and the second pulley. An extension rod is movably sleeved to the inner wall of one side of the adjusting rod and extends through the outer wall of one side of the adjusting rod. The side of the extension rod near the pulley is fixedly connected to the outer wall of one end of the belt.

[0007] Preferably, the inner wall of the grip is hexagonal.

[0008] Preferably, the outer wall of one end of the extension rod has five locking grooves that are vertically and equidistantly distributed, and the cross-section of the locking groove is a four-fifths circle.

[0009] Preferably, a limiting opening is formed on the outer wall of one end of the adjusting rod, the limiting opening is located above the locking groove, and movable rods are movably connected to both ends of the outer wall of the adjusting rod near the limiting opening. A locking block is movably connected to the end of the movable rod away from the adjusting rod, and the locking block extends to one end of the inner wall of the limiting opening. The locking block and the locking groove are engaged in a snap-fit ​​relationship.

[0010] Preferably, the locking block has a circular cross-section.

[0011] Preferably, the outer wall of the extension rod away from the adjusting rod has a bit insertion port, and the inner wall of the bit insertion port is hexagonal.

[0012] Preferably, the outer wall of the grip is provided with multiple sets of semi-circular anti-slip protrusions distributed in a circular and equidistant manner.

[0013] Compared with the prior art, this utility model provides a retractable screwdriver, which has the following beneficial effects:

[0014] 1. This extendable screwdriver uses a transmission mechanism of pulleys, a second pulley, and a belt to extend the extension rod within the adjusting rod, allowing the screwdriver's length to be flexibly adjusted according to actual needs.

[0015] 2. This retractable screwdriver features a locking block that engages with the locking groove, and a linkage design between the movable rod and the locking block. This design securely locks the extension rod, preventing slippage during use and improving the screwdriver's stability and reliability. Furthermore, the tighter fit between the circular cross-section locking block and the locking groove enhances the stability and durability of the lock.

[0016] 3. This extendable screwdriver, with its telescopic mechanism, can be quickly adjusted to the required length, easily tackling deep holes, narrow gaps, or other challenging locations. This not only saves time when changing screwdrivers of different lengths but also improves work efficiency, making repair and assembly work smoother. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the structure of this utility model;

[0018] Figure 2 This is a side sectional view of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of this utility model.

[0020] In the diagram: 1. Handle; 2. Limiting groove; 3. Adjusting rod; 4. Pulley; 5. Second pulley; 6. Belt; 7. Extension rod; 8. Locking groove; 9. Limiting port; 10. Movable rod; 11. Locking block; 12. Bit insertion port; 13. Anti-slip protrusions. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-3 A retractable screwdriver includes a handle 1, with limiting grooves 2 formed at both ends of the inner wall of the handle 1. The design of the handle 1 and the limiting grooves 2 provides stable support and sliding track for the telescopic component, ensuring smooth movement of the telescopic component. The telescopic component is slidably connected to the inner wall of one end of the handle 1.

[0023] The telescopic assembly includes an adjusting rod 3. The adjusting rod 3 is slidably connected to one end of the inner wall of the handle 1. One side of the adjusting rod 3 extends to one side of the outer wall of the handle 1. A pulley 4 is movably connected to the inner wall of one side of the adjusting rod 3. A second pulley 5 is movably connected to the inner wall of the adjusting rod 3 near the pulley 4. The pulley 4 and the second pulley 5 are parallel. A belt 6 is sleeved between the pulley 4 and the second pulley 5. An extension rod 7 is movably sleeved to the inner wall of one side of the adjusting rod 3 and passes through the outer wall of one side of the adjusting rod 3. The side of the extension rod 7 near the pulley 4 is fixedly connected to the outer wall of one end of the belt 6. Through the transmission mechanism of the pulley 4, the second pulley 5 and the belt 6, the extension rod 7 can be telescopic within the adjusting rod 3, so that the length of the screwdriver can be adjusted according to actual needs.

[0024] Furthermore, the inner wall of the grip 1 is hexagonal. The hexagonal inner wall design of the grip 1 provides better grip stability and anti-slip effect, making it easier for users to control the screwdriver during use.

[0025] Furthermore, the outer wall of one end of the extension rod 7 is provided with five locking grooves 8 that are vertically and equidistantly distributed. The cross-section of the locking groove 8 is a four-fifths circle. The design of the locking groove 8 provides multiple locking positions for the extension rod 7, so that the length of the screwdriver can be securely locked at different positions, meeting the needs of different usage scenarios.

[0026] Furthermore, a limiting port 9 is provided on the outer wall of one end of the adjusting rod 3. The limiting port 9 is located above the locking groove 8. Movable rods 10 are movably connected to both ends of the outer wall of the adjusting rod 3 near the limiting port 9. A locking block 11 is movably connected to the end of the movable rod 10 away from the adjusting rod 3. The locking block 11 extends to one end of the inner wall of the limiting port 9. The locking block 11 and the locking groove 8 are engaged. Through the linkage design of the movable rod 10 and the locking block 11, the extension rod 7 is securely locked, preventing slippage during use and improving the stability and reliability of the screwdriver.

[0027] Furthermore, the locking block 11 has a circular cross-section, which makes the fit between the circular locking block 11 and the locking groove 8 tighter, thus improving the stability and durability of the lock.

[0028] Furthermore, a bit insertion port 12 is provided on the outer wall of the extension rod 7 away from the adjustment rod 3. The inner wall of the bit insertion port 12 is hexagonal. The design of the bit insertion port 12 allows the screwdriver to be fitted with different bits, which can meet the needs of different types of screws and improve the versatility and practicality of the screwdriver.

[0029] Furthermore, the outer wall of the handle 1 is provided with multiple sets of semi-circular anti-slip protrusions 13 distributed in a circular and equidistant manner. The design of the semi-circular anti-slip protrusions 13 provides a better grip and anti-slip effect, enabling users to operate the screwdriver more stably during use, thereby improving work efficiency and safety.

[0030] Instructions for use

[0031] Structural Description: 1. Handle 1: Provides grip support and sliding rails, located on the outside of the screwdriver;

[0032] 2. Limiting groove 2: Limits the movement range of the telescopic component, and is formed at both ends of the inner wall of the handle 1;

[0033] 3. Adjusting rod 3: realizes the extension rod's telescopic adjustment, slides on the inner wall of one end of the handle 1, and extends to the outer wall of the handle 1 on one side;

[0034] 4. Pulley 4 and second pulley 5: Drive the extension rod to extend and retract via belt transmission, and are movably connected to the inner wall of one side of the adjusting rod 3, and the two are parallel to each other;

[0035] 5. Belt 6: Connects pulley 4 and extension rod, transmits power, is sleeved between pulley 4 and second pulley 5, and one end is fixedly connected to extension rod 7;

[0036] 6. Extension rod 7: Extends or retracts as needed, movably sleeved on the inner wall of one side of the adjusting rod 3, and passes through the outer wall of one side of the adjusting rod 3;

[0037] 7. Locking groove 8: Provides a locking position for the extension rod, and is opened on the outer wall of one end of the extension rod 7, and is distributed vertically at equal intervals;

[0038] 8. Limiting port 9: Provides movement space for the locking block, and is opened on the outer wall of one end of the adjusting rod 3, located above the locking groove 8;

[0039] 9. Movable rod 10: Connects the adjusting rod and the locking block, enabling the locking block to move. It is movably connected to both ends of the outer wall of the adjusting rod 3 near the limit port 9.

[0040] 10. Locking block 11: engages with the locking groove to securely lock the extension rod, and is movably connected to the end of the movable rod 10 away from the adjusting rod 3, extending to the inner wall of the limiting port 9;

[0041] 11. Bit insertion port 12: For changing different bits to accommodate different types of screws, it is located on the outer wall of the extension rod 7 on the side away from the adjustment rod 3;

[0042] 12. Anti-slip protrusions 13: Provide grip and anti-slip effect, located on the outer wall of the handle 1, and are distributed in a circular and equidistant manner.

[0043] Working Principle: The basic movement function of the telescopic component within the handle 1 is achieved through the sliding connection between the adjusting rod 3 and the inner wall of the handle 1. One side of the adjusting rod 3 extends to the outer wall of the handle 1 for easy user operation. Inside the adjusting rod 3, pulley 4 and the second pulley 5 are arranged parallel to each other and connected by a belt 6, forming a transmission system. When the user operates the adjusting rod 3, the rotation of pulley 4 and the second pulley 5, transmitted through the belt 6, drives the extension rod 7, which is fixedly connected to the outer wall of one end of the belt 6, to move within the adjusting rod 3. This design allows the extension rod 7 to extend or retract as needed, thus achieving flexible adjustment of the screwdriver length. To maintain the stability of the extension rod 7 after adjustment, a linkage mechanism of locking groove 8, limiting port 9, movable rod 10, and locking block 11 is designed. Five locking grooves 8 on the outer wall of one end of the extension rod 7 provide position selection for locking. When the extension rod 7 is adjusted to the appropriate length, the user can operate the movable rod 10 to move the locking block 11 within the limiting port 9 and engage it with the corresponding locking groove 8. The circular cross-section design of the locking block 11 ensures a tight fit with the locking groove 8 (a four-fifths circular cross-section), effectively locking the position of the extension rod 7 and preventing it from slipping during use. Furthermore, the bit slot 12 allows the screwdriver to accept different bits to accommodate different types of screws. The semi-circular anti-slip protrusions 13 on the outer wall of the handle 1 provide a better grip and anti-slip effect, enabling users to operate the screwdriver more stably during use.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A telescopic screwdriver comprising a handle (1), characterized in that: The handle (1) is internally provided with a limiting sliding groove (2) at both ends, and the handle (1) is slidably connected with an extension assembly at one end. The extension assembly comprises an adjusting rod (3), the handle (1) is slidably connected with the adjusting rod (3) at one end, the adjusting rod (3) extends to one side of the outer wall of the handle (1), the adjusting rod (3) is movably connected with a pulley (4) on one side, the adjusting rod (3) is movably connected with a second pulley (5) on the inner wall of the side close to the pulley (4), the pulley (4) is parallel to the second pulley (5), the pulley (4) and the second pulley (5) are sleeved with a belt (6), the adjusting rod (3) is movably sleeved with an extension rod (7) on one side, and the extension rod (7) penetrates through the outer wall of one side of the adjusting rod (3), and the extension rod (7) is fixedly connected to the outer wall of one end of the belt (6) on the side close to the pulley (4).

2. A retractable screwdriver according to claim 1, wherein: The inner wall of the handle (1) is hexagonal.

3. The retracting screwdriver of claim 1 wherein: The outer wall of one end of the extension rod (7) is provided with five vertically equidistant locking grooves (8), and the cross section of the locking groove (8) is four-fifths of a circle.

4. The retracting screwdriver of claim 1 wherein: The outer wall of one end of the adjusting rod (3) is provided with a limiting opening (9), and the limiting opening (9) is located above the locking groove (8), the outer wall of one end of the adjusting rod (3) is movably connected with a movable rod (10) at both ends close to the limiting opening (9), the movable rod (10) is movably connected with a locking block (11) away from the adjusting rod (3), the locking block (11) extends to the inner wall of one end of the limiting opening (9), and the locking block (11) is connected with the locking groove (8) in a clamping manner.

5. A retractable screwdriver according to claim 4, wherein: The cross section of the locking block (11) is circular.

6. The retracting screwdriver of claim 1 wherein: The outer wall of one end of the extension rod (7) is provided with a socket (12), and the inner wall of the socket (12) is hexagonal.

7. The retracting screwdriver of claim 1 wherein: The outer wall of the handle (1) is provided with a plurality of groups of semicircular anti-skid convex points (13) which are circularly and equidistantly distributed.

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