A screwdriver with telescopic function

Abstract

The utility model discloses a screwdriver with telescopic function, including handle, the handle is set to hollow, the left side of handle is provided with taper rod, the one end of taper rod is close to handle and is penetrated to the inside of handle and is connected with handle sliding, the inner surface fixed connection of handle has the connecting plate, the four corners of connecting plate right side all are fixedly connected with support, the surface of support is swingly connected with the pressing plate of pin shaft, the side of pressing plate away from support extends to the outside of taper rod and is contacted with the surface of taper rod. The utility model discloses setting up the lever type clamping mechanism of connecting plate, support, pin shaft and pressing plate, combining the adjusting structure of being located right side of handle, can be active and accurately control the clamping force of pressing plate to taper rod, fundamentally solved the problem of the insufficient clamping force of traditional screwdriver and the elastic displacement under the large moment of easily happening of simply relying on elastic contraction, thereby significantly improved the stability and reliability of use.

Description

Technical Field

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

[0002] A screwdriver is a tool used to tighten screws into place. Screwdrivers can be mainly classified by the shape of the tip and the driving method, corresponding to the groove shape on the screw head.

[0003] For example, the patent application number published on the China Patent Network is 202223315570.9, and the patent title is: A telescopic filling screwdriver structure and a multi-functional screwdriver. It includes a filling column assembly and a telescopic adjustment mechanism. The filling column assembly includes multiple unit filling columns, each unit filling column including a sequentially connected mounting section and an elastic telescopic actuation section. The mounting section is connected to the telescopic adjustment mechanism, which can drive all unit filling columns to move synchronously, inserting the corresponding elastic telescopic actuation section into the groove of the bolt head to be disassembled. The multi-functional screwdriver includes a handle and the telescopic filling screwdriver structure. The telescopic adjustment mechanism is mounted on the handle, and the mounting section is movably inserted into the handle along its head. In practical use, this invention can form a screwdriver head that matches different types of bolts through telescopic filling, eliminating the need to carry excessive screwdrivers or screwdriver heads. It has a wide range of applications and facilitates convenient bolt disassembly and assembly.

[0004] However, the adjustment method of existing screwdrivers is relatively simple, mainly relying on elastic contraction for adjustment. When tight compression is required during use, elastic displacement will occur, affecting the stability of use.

[0005] Therefore, it is necessary to redesign and modify screwdrivers with telescopic functions. Utility Model Content

[0006] To address the problems mentioned in the background art, the purpose of this utility model is to provide a screwdriver with a telescopic function, which has the advantage of improving adjustment stability. This solves the problem that the adjustment method of existing screwdrivers is relatively simple, mainly relying on elastic contraction for adjustment. When tight compression is required during use, elastic displacement will occur, affecting the stability of use.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a screwdriver with a telescopic function, including a handle;

[0008] The handle is hollow, and a tapered rod is provided on the left side of the handle. The end of the tapered rod near the handle extends into the interior of the handle and is slidably connected to the handle. A connecting plate is fixedly connected to the inner surface of the handle. A bracket is fixedly connected to each of the four corners on the right side of the connecting plate. A pressure plate is movably connected to the surface of the bracket via a pin. The side of the pressure plate away from the bracket extends to the outside of the tapered rod and contacts the surface of the tapered rod. An adjustment structure is provided on the right side of the handle, which can adjust the squeezing pressure of the pressure plate.

[0009] As a preferred embodiment of this utility model, the adjustment structure includes a cover plate fixedly connected to the right side of the handle, a screw rod provided on the right side of the cover plate, the left end of the screw rod penetrating the cover plate and extending into the interior of the handle, the handle and the screw rod being threadedly connected, a support plate being slidably connected inside the handle, the end of the screw rod away from the rotating wheel contacting the right side of the support plate, and force-bearing plates fixedly connected to both sides of the pressure plate, the force-bearing plates being located on the left side of the support plate and contacting the surface of the support plate.

[0010] As a preferred embodiment of this invention, the surface of the tapered rod is provided with a groove, and the pressure plate is located inside the groove and is slidably connected to the groove.

[0011] As a preferred embodiment of this utility model, a limiting rod is fixedly connected to the right side of the connecting plate. The end of the limiting rod away from the connecting plate passes through the support plate and the screw in sequence and extends into the interior of the screw. Both the screw and the support plate are slidably connected to the limiting rod.

[0012] As a preferred embodiment of this utility model, spring plates are fixedly connected to all four sides of the limiting rod, and the side of the spring plate away from the limiting rod contacts the inner side of the pressure plate, and the spring plate is elastic.

[0013] As a preferred embodiment of this utility model, a limiting ring is fixedly connected to the surface of the limiting rod, and a compression spring sleeved on the surface of the limiting rod is fixedly connected to the right side of the limiting ring. The side of the compression spring away from the limiting rod contacts the left side of the support plate.

[0014] As a preferred embodiment of this invention, a rotating wheel is fixedly connected to the right end of the screw, and the rotating wheel is located on the right side of the handle.

[0015] As a preferred embodiment of this utility model, rubber pads are fixedly connected to both sides of the support plate, and the side of the rubber pads away from the support plate is in contact with the surface of the force plate and the screw respectively.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model, by setting up a lever-type clamping mechanism consisting of a connecting plate, a bracket, a pin, and a pressure plate, combined with an adjustment structure located on the right side of the handle, can actively and precisely control the clamping force of the pressure plate on the cone rod, fundamentally solving the problem of insufficient clamping force and easy elastic displacement under high torque caused by traditional screwdrivers relying solely on elastic contraction, thus significantly improving the stability and reliability of use.

[0018] 2. This utility model converts rotational motion into linear motion of the support plate through a threaded connection between the screw and the handle. This threaded transmission method has a self-locking characteristic, which can effectively prevent the clamping force from loosening due to vibration or reverse force during use, ensuring the durability of the lock.

[0019] 3. This invention upgrades the clamping method from simple planar friction to mechanical interlocking by creating a groove on the surface of the tapered rod and positioning the end of the pressure plate within the groove. This significantly increases the tapered rod's anti-slip capability under torsional forces and provides axial mechanical restraint for the tapered rod.

[0020] 4. This utility model provides precise guidance for the movement of the support plate by setting a limiting rod that runs through the support plate and the screw, ensuring that the support plate can only move in a straight line and will not rotate with the screw, thereby ensuring transmission efficiency and preventing the parts from deflecting or jamming during operation.

[0021] 5. This utility model provides a continuous, centripetal rebound force to the pressure plate by fixing an elastic spring plate on the limiting rod and making it contact the inner side of the pressure plate.

[0022] 6. This utility model sets a limiting ring and a compression spring on the limiting rod, so that the compression spring acts on the left side of the support plate, thereby applying a continuous rightward elastic force to the support plate.

[0023] 7. This utility model provides users with a control terminal that can be operated by hand without the aid of any tools by fixing a rotating wheel to the right end of the screw.

[0024] 8. This utility model provides rubber pads on both sides of the support plate, which act as buffers and reduce friction when in contact with the load-bearing plate and screw. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure on the right side of this utility model;

[0027] Figure 3 This is a partial structural diagram of the present invention;

[0028] Figure 4 This is a schematic diagram of a partial structural separation of the present invention;

[0029] Figure 5 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0030] In the diagram: 1. Handle; 2. Tapered rod; 3. Connecting plate; 4. Bracket; 5. Pressure plate; 6. Cover plate; 7. Screw; 8. Support plate; 9. Force plate; 10. Groove; 11. Limiting rod; 12. Spring plate; 13. Limiting ring; 14. Compression spring; 15. Rotating wheel; 16. Rubber pad. Detailed Implementation

[0031] 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.

[0032] like Figures 1 to 5 As shown, the present invention provides a screwdriver with a telescopic function, including a handle 1;

[0033] The handle 1 is hollow. A conical rod 2 is provided on the left side of the handle 1. The end of the conical rod 2 near the handle 1 extends into the interior of the handle 1 and is slidably connected to the handle 1. A connecting plate 3 is fixedly connected to the inner surface of the handle 1. A bracket 4 is fixedly connected to the four corners on the right side of the connecting plate 3. A pressure plate 5 is movably connected to the surface of the bracket 4 through a pin. The side of the pressure plate 5 away from the bracket 4 extends to the outside of the conical rod 2 and contacts the surface of the conical rod 2. An adjustment structure is provided on the right side of the handle 1. The adjustment structure can adjust the squeezing pressure of the pressure plate 5.

[0034] refer to Figure 4 The adjustment structure includes a cover plate 6 fixedly connected to the right side of the handle 1. A screw 7 is provided on the right side of the cover plate 6. The left end of the screw 7 passes through the cover plate 6 and extends into the interior of the handle 1. The handle 1 and the screw 7 are threadedly connected. A support plate 8 is slidably connected inside the handle 1. The end of the screw 7 away from the rotating wheel 15 contacts the right side of the support plate 8. Force plates 9 are fixedly connected to both sides of the pressure plate 5. The force plates 9 are located on the left side of the support plate 8 and contact the surface of the support plate 8.

[0035] As a technical optimization of this utility model, the rotational motion is converted into the linear motion of the support plate 8 through the threaded connection between the screw 7 and the handle 1. This threaded transmission method has a self-locking characteristic, which can effectively prevent the clamping force from loosening due to vibration or reverse force during use, and ensure the durability of the lock.

[0036] refer to Figure 3 The surface of the cone rod 2 is provided with a groove 10, and the pressure plate 5 is located inside the groove 10 and is slidably connected to the groove 10.

[0037] As a technical optimization of this utility model, by creating a groove 10 on the surface of the tapered rod 2 and positioning the end of the pressure plate 5 within the groove 10, the clamping method is upgraded from simple planar friction to mechanical interlocking. This greatly increases the anti-slip capability of the tapered rod 2 when subjected to torsional force, providing axial mechanical restraint for the tapered rod 2.

[0038] refer to Figure 4 A limiting rod 11 is fixedly connected to the right side of the connecting plate 3. The end of the limiting rod 11 away from the connecting plate 3 passes through the support plate 8 and the screw 7 in sequence and extends into the interior of the screw 7. The screw 7 and the support plate 8 are slidably connected to the limiting rod 11.

[0039] As a technical optimization of this utility model, by setting a limiting rod 11 that passes through the support plate 8 and the screw 7, a precise guide is provided for the movement of the support plate 8, ensuring that the support plate 8 can only move in a straight line and will not rotate with the screw 7, thereby ensuring transmission efficiency and avoiding the parts from deflecting or getting stuck during operation.

[0040] refer to Figure 5 The limiting rod 11 is fixedly connected with spring plates 12 on all four sides. The side of the spring plate 12 away from the limiting rod 11 contacts the inner side of the pressure plate 5. The spring plate 12 is elastic.

[0041] As a technical optimization of this utility model, by fixing an elastic spring plate 12 on the limiting rod 11 and making it contact the inner side of the pressure plate 5, a continuous, centripetal rebound force is provided to the pressure plate 5.

[0042] refer to Figure 4 A limiting ring 13 is fixedly connected to the surface of the limiting rod 11. A compression spring 14 is fixedly connected to the right side of the limiting ring 13 and sleeved on the surface of the limiting rod 11. The side of the compression spring 14 away from the limiting rod 11 contacts the left side of the support plate 8.

[0043] As a technical optimization of this utility model, by setting a limiting ring 13 and a compression spring 14 on the limiting rod 11, the compression spring 14 acts on the left side of the support plate 8, thereby applying a continuous rightward elastic force to the support plate 8.

[0044] refer to Figure 5 The right end of the screw 7 is fixedly connected to a rotating wheel 15, which is located on the right side of the handle 1.

[0045] As a technical optimization of this utility model, by setting a limiting ring 13 and a compression spring 14 on the limiting rod 11, the compression spring 14 acts on the left side of the support plate 8, thereby applying a continuous rightward elastic force to the support plate 8.

[0046] refer to Figure 4 Both sides of the support plate 8 are fixedly connected with rubber pads 16. The side of the rubber pads 16 away from the support plate 8 is in contact with the surface of the force plate 9 and the screw 7, respectively.

[0047] As a technical optimization of this utility model, rubber pads 16 are provided on both sides of the support plate 8 so that they can play a buffering and friction-reducing role when in contact with the force plate 9 and the screw 7.

[0048] The working principle and usage process of this utility model are as follows: When the length needs to be adjusted, the user rotates the wheel 15 at the right end of the handle 1 counterclockwise, causing the screw 7 to retract outward. This action releases the pressure on the internal support plate 8, and the support plate 8 moves to the right, thereby relieving the pressure on the pressure plate 5. At this time, under the action of the spring plate 12, the pressure plate 5 will retract inward around its pin axis, causing its end to disengage from the groove 10 on the surface of the cone rod 2. The cone rod 2 is then released and can slide freely in the handle 1 to extend or retract to the required length. After adjustment, the user rotates the wheel 15 clockwise, and the screw 7 pushes inward, pushing the support plate 8 to the left. The support plate 8 presses the force plate 9 connected to the pressure plate 5, forcing the pressure plate 5 to open inward, so that its end is tightly locked into the groove 10 of the cone rod 2, thereby achieving a firm lock. By rotating the wheel 15, the user can precisely control the clamping force of the pressure plate 5 on the cone rod 2, ensuring that no accidental extension or sliding will occur during use, greatly improving stability and reliability.

[0049] In summary, this telescopic screwdriver, through the use of a lever-type clamping mechanism consisting of a connecting plate 3, a bracket 4, a pin, and a pressure plate 5, combined with an adjustment structure located on the right side of the handle 1, can actively and precisely control the clamping force of the pressure plate 5 on the cone rod 2. This fundamentally solves the problems of insufficient clamping force and easy elastic displacement under high torque caused by traditional screwdrivers relying solely on elastic contraction, thus significantly improving the stability and reliability of its use.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] 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 screwdriver with telescopic function, including a handle (1); Its features are: The handle (1) is hollow. A tapered rod (2) is provided on the left side of the handle (1). The end of the tapered rod (2) near the handle (1) extends into the interior of the handle (1) and is slidably connected to the handle (1). A connecting plate (3) is fixedly connected to the inner surface of the handle (1). A bracket (4) is fixedly connected to the four corners on the right side of the connecting plate (3). A pressure plate (5) is movably connected to the surface of the bracket (4) through a pin. The side of the pressure plate (5) away from the bracket (4) extends to the outside of the tapered rod (2) and contacts the surface of the tapered rod (2). An adjustment structure is provided on the right side of the handle (1). The adjustment structure can adjust the squeezing pressure of the pressure plate (5).

2. A screwdriver with telescopic function according to claim 1, characterized in that: The adjustment structure includes a cover plate (6) fixedly connected to the right side of the handle (1). A screw (7) is provided on the right side of the cover plate (6). The left end of the screw (7) passes through the cover plate (6) and extends into the interior of the handle (1). The handle (1) and the screw (7) are threadedly connected. A support plate (8) is slidably connected inside the handle (1). The end of the screw (7) away from the rotating wheel (15) contacts the right side of the support plate (8). Force plates (9) are fixedly connected to both sides of the pressure plate (5). The force plates (9) are located on the left side of the support plate (8) and contact the surface of the support plate (8).

3. A screwdriver with telescopic function according to claim 1, characterized in that: The surface of the cone rod (2) is provided with a groove (10), and the pressure plate (5) is located inside the groove (10) and is slidably connected to the groove (10).

4. A screwdriver with telescopic function according to claim 2, characterized in that: A limiting rod (11) is fixedly connected to the right side of the connecting plate (3). The end of the limiting rod (11) away from the connecting plate (3) passes through the support plate (8) and the screw (7) in sequence and extends into the interior of the screw (7). The screw (7) and the support plate (8) are slidably connected to the limiting rod (11).

5. A screwdriver with telescopic function according to claim 4, characterized in that: The limiting rod (11) is fixedly connected with spring plates (12) around its perimeter. The side of the spring plate (12) away from the limiting rod (11) is in contact with the inner side of the pressure plate (5). The spring plate (12) is elastic.

6. A screwdriver with telescopic function according to claim 4, characterized in that: A limiting ring (13) is fixedly connected to the surface of the limiting rod (11). A compression spring (14) sleeved on the surface of the limiting rod (11) is fixedly connected to the right side of the limiting ring (13). The side of the compression spring (14) away from the limiting rod (11) contacts the left side of the support plate (8).

7. A screwdriver with telescopic function according to claim 2, characterized in that: The right end of the screw (7) is fixedly connected to a rotating wheel (15), which is located on the right side of the handle (1).

8. A screwdriver with telescopic function according to claim 2, characterized in that: Both sides of the support plate (8) are fixedly connected with rubber pads (16), and the side of the rubber pads (16) away from the support plate (8) is in contact with the surface of the force plate (9) and the screw (7) respectively.

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