Simple bending screwdriver

Abstract

The invention relates to the technical field, and provides a simple bending screwdriver which comprises a working rod and a handle, the working rod comprises a rod body and a connecting part, one end of the connecting part is rotatably connected with the rod body through a rotating shaft, a cavity is formed in the hinged end of the rod body, and a limiting ratchet wheel arranged on the rotating shaft in a sleeving mode is arranged in the cavity; limiting rods are arranged on the two sides of the limiting ratchet wheel, the two limiting rods are oppositely arranged, one ends of the two limiting rods are rotationally connected with the inner wall of the cavity, a driving spring is connected between the other ends of the two limiting rods and the inner wall of the cavity, and a limiting shifting piece is further arranged between the two limiting rods; the limiting shifting piece can press the driving springs on the two sides by rotating by different angles so that the driving springs can be separated from the limiting ratchet wheel, a driving block is coaxially fixed to the limiting shifting piece, and the driving block penetrates out of the hinged end. The screw driver has the beneficial effects that the screw driver can rotate by any angle and be locked, the screw driver forms an L-shaped, Z-shaped or U-shaped structure through bending operation, and the screw driver is suitable for more use scenes with obstacles.

Description

Technical Field

[0001] This invention relates to the technical field of hardware tools, specifically to a simple bending screwdriver. Background Technology

[0002] In many repair scenarios, screws are often located in awkward positions, such as deep within engine blocks or large mechanical frames. The handle of a regular screwdriver might hit the hole wall, making it impossible to press down vertically or rotate. Alternatively, there might be a beam, a wiring harness, or a bracket directly above the screw, leaving only a narrow gap on one side. Therefore, screwdrivers designed to handle these scenarios are needed, allowing the handle to rotate on an unobstructed plane while the blade operates on another plane below, avoiding obstacles. This led to the development of bendable screwdrivers. However, after bending, the joint strength is low, and the bending angle is not flexible or stable enough, resulting in unstable angles during use. Furthermore, most bendable screwdrivers on the market can only bend once, still failing to meet the needs of many confined spaces. Summary of the Invention

[0003] This invention proposes a simple bending screwdriver that can be rotated at any angle and locked, and can be bent into an L-shaped, Z-shaped or U-shaped structure to adapt to more usage scenarios with obstacles.

[0004] Therefore, the technical solution adopted is as follows: A simple bending screwdriver includes a working rod and a handle. The working rod includes a rod body and a connecting part. One end of the connecting part is connected to the handle, and the other end is rotatably connected to the rod body via a rotating shaft. The hinged end of the rod body has a cavity inside. Inside the cavity is a limiting ratchet that is sleeved and fixed on the rotating shaft. There is a limiting rod on each side of the limiting ratchet. The two limiting rods are arranged opposite each other, with one end rotatably connected to the inner wall of the cavity and the other end connected to the inner wall of the cavity by a drive spring. In the natural state, the limiting rod connected to the drive spring presses against the limiting ratchet. There is also a limiting tab between the two limiting rods. The limiting tab can press the drive springs on both sides to disengage them from the limiting ratchet by rotating at different angles. A drive block is coaxially fixed to the limiting tab and extends out of the hinged end.

[0005] A further technical solution is that the connecting part has an insertion groove at one end facing the working rod, a sliding block is slidably inserted into the insertion groove, an elastic element is connected between the sliding block and the bottom of the insertion groove, a sliding rod is fixed coaxially with the working rod on the bottom surface of the insertion groove, the other end of the sliding rod passes through the sliding block and is slidably connected to it, the end of the sliding rod is rotatably connected to the rod body through a rotating shaft, and the elastic element presses the hinge end of the sliding block against the rod body when there is no external force, and the edges of the hinge end are all rounded.

[0006] A further technical solution is that a connecting rod is fixed to the other end of the connecting part, and a connecting groove for inserting the connecting rod is opened on the corresponding end face of the handle. At the same time, a notch is opened on the other end of the handle on the same end face. The depth of the notch is lower than the depth of the connecting groove. The connecting rod is connected to the handle by a connecting shaft. The connecting shaft passes through the two side walls of the notch so that the connecting rod can rotate in the notch. Adjustment holes for sliding along the handle axis are opened on both side walls. The two ends of the connecting shaft pass through the adjustment holes on both sides and are respectively fixed with a pressing part and a locking part. A compression spring sleeved on the connecting shaft is between the pressing part and the side wall where the adjacent adjustment hole is located. Several limiting grooves are opened on the side wall where the opposite adjustment hole is located along the adjustment hole corresponding to the locking part. The locking part can be embedded in each limiting groove. When the locking part is embedded in the limiting groove closest to the bottom of the connecting groove, the insertion end of the connecting rod is lower than the bottom surface of the notch. When the locking part is embedded in the other limiting grooves, the insertion end of the connecting rod is higher than the bottom surface of the notch.

[0007] A further technical solution is that the working end of the working rod is provided with a bit groove.

[0008] A further technical solution is that the handle is composed of a working part connected to the working rod and a storage part threadedly connected, and the storage part has a number of bit placement slots inside.

[0009] A further technical solution is that a limiting block is fixed at the opening of the insertion groove, and a limiting boss is fixed on the outer edge of the sliding block, the diameter of the limiting boss being larger than the diameter of the limiting block.

[0010] A further technical solution is that the number of limiting grooves is two, and they are located at both ends of the adjustment hole respectively.

[0011] The working principle and beneficial effects of this application are as follows: 1. This screwdriver can rotate at any angle and is locked by a limit ratchet, which can adapt to more working angles and ensure the stability of the angle after rotation.

[0012] 2. In addition to its regular use, this screwdriver can be bent into an L-shape and its length can be adjusted by changing the position of the connecting shaft, adapting to more usage scenarios and needs. When you need to quickly turn the screw, you can rotate the working rod to be collinear with the handle. When you need to tighten or loosen the screw, you can rotate the working rod to be perpendicular to the handle, making it more labor-saving.

[0013] 3. At the same time, the screwdriver can also be bent into a Z-shaped or U-shaped structure to solve multiple obstacles in positions such as corners. For example, when the screw that needs to be accessed is located at a specific depth in a narrow space, and there are obstacles on the side of the screw at this depth, the Z-shape can produce a precise lateral offset at a specific depth position, to deal with more narrow scenarios and to assist operators. Attached Figure Description

[0014] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the main view structure of this application; Figure 3 This is a schematic diagram of the rear view structure of this application; Figure 4 This is a side view of the structure of this application; Figure 5 This is a schematic diagram of the limiting ratchet described in this application; Figure 6 This is a schematic diagram of the cross-sectional structure described in this application; Figure 7 This is a cross-sectional view of the structure from another angle. Figure 8 This is a schematic diagram of the structure of one embodiment of this application; Figure 9 This is a schematic diagram of another embodiment of the present application.

[0016] In the diagram: 1. Working rod; 101. Rotating shaft; 102. Cavity; 103. Limiting ratchet; 104. Limiting rod; 105. Drive spring; 106. Limiting paddle; 107. Drive block; 10. Rod body; 11. Connecting rod; 12. Connecting part; 121. Insertion slot; 122. Limiting block; 13. Sliding block; 131. Limiting boss; 14. Elastic element; 15. Sliding rod; 16. Hinge end; 161. Rounded corner; 17. Bit groove; 2. Handle; 20. Storage part; 201. Bit placement slot; 21. Connecting slot; 22. Notch; 3. Connecting shaft; 30. Adjustment hole; 31. Pressing part; 32. Locking part; 33. Compression spring; 34. Limiting recess. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0018] like Figures 1-9 As shown, a simple bending screwdriver includes a working rod 1 and a handle 2. The working rod 1 includes a rod body 10 and a connecting part 12. One end of the connecting part 12 is connected to the handle 2, and the other end is rotatably connected to the rod body 10 via a rotating shaft 101. The hinged end 16 of the rod body 10 has a cavity 102 inside. The cavity 102 has a limiting ratchet 103 sleeved and fixed on the rotating shaft 101. Each limiting ratchet 103 has a limiting rod 104 on both sides. The two limiting rods 104 are arranged opposite each other and one end is connected to the cavity 102. The inner wall of cavity 102 is rotatably connected, and a drive spring 105 is connected between the other end and the inner wall of cavity 102. In its natural state, the limit rod 104 connected to the drive spring 105 presses against the limit ratchet 103. There is also a limit lever 106 between the two limit rods 104. The limit lever 106 can press the drive springs 105 on both sides by rotating at different angles to disengage them from the limit ratchet 103. The limit lever 106 is coaxially fixed with a drive block 107, which is set through the hinge end 16.

[0019] This application utilizes the action of the limiting ratchet 103, with two limiting rods 104 abutting against the limiting ratchet 103, preventing it from rotating, thereby locking the angle of the working rod 1. Figure 5 As shown, when the working rod 1 needs to rotate clockwise, the driving block 107 moves the limiting paddle 106 to press the right limiting rod 104. At this time, the right limiting rod 104 no longer restricts the limiting ratchet 103, while the left limiting rod 104 is not affected by the spring and will not rotate clockwise. Conversely, when the working rod 1 needs to rotate counterclockwise, the limiting paddle 106 is moved in the opposite direction to press the left limiting rod 104, thus realizing the arbitrary angle rotation and locking of the working rod 1.

[0020] A specific connection embodiment of the working rod 1 and the handle 2 is as follows: an insertion groove 121 is provided at one end of the connecting part 12 facing the working rod 1. A sliding block 13 is slidably inserted into the insertion groove 121. An elastic element 14 is connected between the sliding block 13 and the bottom of the insertion groove 121. A sliding rod 15 is fixed coaxially with the working rod 1 on the bottom surface of the insertion groove 121. The other end of the sliding rod 15 passes through the sliding block 13 and is slidably connected to it. The protruding end of the sliding rod 15 is rotatably connected to the rod body 10 through a rotating shaft 101. When the elastic element 14 is not subjected to external force, it abuts the sliding block 13 against the hinge end 16 of the rod body 10, and the edges of the hinge end 16 are all set as rounded corners 161. The rod 10 rotates around the rotation axis 101. When the hinge end 16 of the rod 10 rotates, it will squeeze the sliding block 13. The sliding block 13 slides into the insertion groove 121 and squeezes the elastic element 14. After the rotation is completed, the elastic element 14 resets and presses the rod 10 and the sliding block 13 together again, forming the first bending joint of the screwdriver.

[0021] Based on this, a connecting rod 11 is fixed to the other end of the connecting part 12. The handle 2 has a connecting groove 21 for the connecting rod 11 to be inserted on the corresponding end face. At the same time, a notch 22 is also opened on the end face facing the other end of the handle 2. The depth of the notch 22 is lower than the depth of the connecting groove 21. Therefore, when the connecting rod 11 is inserted into the bottom of the connecting groove 21, it cannot rotate. However, when it is pulled out a certain distance and is higher than the bottom of the notch 22, it can rotate in the notch 22.

[0022] Thus, the connecting rod 11 is connected to the handle 2 via a connecting shaft 3. The connecting shaft 3 passes through the two side walls of the notch 22, allowing the connecting rod 11 to rotate within the notch 22. Adjusting holes 30 are correspondingly provided on both side walls for the connecting shaft 3 to slide along the axis of the handle 2. Both ends of the connecting shaft 3 pass through the adjusting holes 30 on both sides and are respectively fixed with a pressing part 31 and a locking part 32. The pressing part 31 and the side wall where the adjacent adjusting hole 30 is located are fitted together. On the side wall of the compression spring 33 on the shaft 3, opposite to the adjustment hole 30, there are several limiting grooves 34 opened along the locking part 32 corresponding to the adjustment hole 30. The locking part 32 can be embedded in each limiting groove 34. When the locking part 32 is embedded in the limiting groove 34 closest to the bottom of the connecting groove 21, the insertion end of the connecting rod 11 is lower than the bottom surface of the notch 22. When the locking part 32 is embedded in the other limiting grooves 34, the insertion end of the connecting rod 11 is higher than the bottom surface of the notch 22.

[0023] When the screwdriver is in its normal position, the insertion end of the connecting rod 11 is lower than the bottom surface of the notch 22. At this time, the connecting rod 11 is restricted by the connecting groove 21 and can only slide axially, not rotate in other directions. When bending is required, pressing the pressing part 31 compresses the spring 33, which pushes the connecting shaft 3 to disengage the locking part 32 at the other end from the lowest position of the limiting groove 34. After disengaging, it continues to grip the pressing parts 31 and locking parts 32 at both ends, causing the connecting shaft 3 to slide along the adjusting hole 30 and enter other limiting grooves. The selection of the groove 34, specifically the limiting groove 34, determines the final length of the working rod 1. After aligning with the limiting groove 34, releasing the pressing part 31 compresses the spring force of the spring 33, causing the locking part 32 to embed into the new limiting groove 34 and secure it. At this time, the insertion end of the connecting rod 11 is higher than the bottom surface of the notch 22. Thus, the connecting rod 11 can rotate around the connecting shaft 3 within the notch 22, thereby driving the working rod 1 to rotate around the handle 2 at a certain angle, forming the second bending joint of the screwdriver. Simultaneously, the overall length of the working rod 1 can be adjusted. (See reference...) Figure 8 and Figure 9 This is a schematic diagram of two bending embodiments of the application.

[0024] like Figures 6-7 As shown, the working end of the working rod 1 is provided with a bit groove 17. The handle 2 is composed of a working part connected to the working rod 1 and a storage part 20 connected by threads. The storage part 20 is provided with several bit placement slots 201 inside, which facilitates the replacement and storage of different types of bits.

[0025] One embodiment of the limiting groove 34 is that there are two of them, located at both ends of the adjustment hole 30. This embodiment is suitable for fixed operating environments. The two ends of the limiting adjustment hole 30 make the bending operation simpler, eliminating the need for constant adjustment and ensuring the stability of the elastic force of the compression spring 33. Similarly, the hinge end 16 of the rod 10 is a cuboid structure that makes the distance from the rotating shaft 101 to each end face equal. This is also to facilitate the stable locking of the elastic element 14, preventing it from becoming loose or tight due to changes in distance.

[0026] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A simple bending screwdriver, comprising a working rod (1) and a handle (2), characterized in that: The working rod (1) includes a rod body (10) and a connecting part (12). One end of the connecting part (12) is connected to the handle (2), and the other end is rotatably connected to the rod body (10) via a rotating shaft (101). The hinge end (16) of the rod body (10) has a cavity (102). Inside the cavity (102) is a limiting ratchet (103) sleeved and fixed on the rotating shaft (101). Each side of the limiting ratchet (103) has a limiting rod (104). The two limiting rods (104) are arranged opposite each other and one end is rotatable against the inner wall of the cavity (102). The other end is connected to the inner wall of the cavity (102) with a drive spring (105). In the natural state, the limit rod (104) connected to the drive spring (105) presses against the limit ratchet (103). There is also a limit paddle (106) between the two limit rods (104). The limit paddle (106) can press the drive springs (105) on both sides by rotating at different angles to make them disengage from the limit ratchet (103). The limit paddle (106) is coaxially fixed with a drive block (107). The drive block (107) is set through the hinge end (16).

2. The simple bending screwdriver according to claim 1, characterized in that, The connecting part (12) has an insertion groove (121) at one end facing the working rod (1). A sliding block (13) is slidably inserted into the insertion groove (121). An elastic element (14) is connected between the sliding block (13) and the bottom of the insertion groove (121). A sliding rod (15) is fixed coaxially with the working rod (1) on the bottom surface of the insertion groove (121). The other end of the sliding rod (15) passes through the sliding block (13) and is slidably connected to it. The end of the sliding rod (15) is rotatably connected to the rod body (10) through a rotating shaft (101). When the elastic element (14) is not subjected to external force, it presses the sliding block (13) against the hinge end (16) of the rod body (10), and the edges of the hinge end (16) are all rounded (161).

3. The simple bending screwdriver according to claim 2, characterized in that, A connecting rod (11) is fixed to the other end of the connecting part (12). The handle (2) has a connecting groove (21) on the corresponding end face for inserting the connecting rod (11). At the same time, a notch (22) is also opened on the other end of the handle (2). The depth of the notch (22) is lower than the depth of the connecting groove (21). The connecting rod (11) is connected to the handle (2) by a connecting shaft (3). The connecting shaft (3) passes through the two side walls of the notch (22) so that the connecting rod (11) can rotate in the notch (22). Adjustment holes (30) are opened on both side walls for the connecting shaft (3) to slide along the axis of the handle (2). The two ends of the connecting shaft (3) pass through the adjustment holes (30) on both sides. A pressing part (31) and a locking part (32) are fixed thereon respectively. The pressing part (31) and the side wall where the adjacent adjustment hole (30) is located have a compression spring (33) sleeved on the connecting shaft (3). On the opposite side of the side wall where the adjustment hole (30) is located, a number of limiting grooves (34) are opened along the adjustment hole (30) corresponding to the locking part (32). The locking part (32) can be embedded in each limiting groove (34). When the locking part (32) is embedded in the limiting groove (34) closest to the bottom of the connecting groove (21), the insertion end of the connecting rod (11) is lower than the bottom surface of the notch (22). When the locking part (32) is embedded in the other limiting grooves (34), the insertion end of the connecting rod (11) is higher than the bottom surface of the notch (22).

4. The simple bending screwdriver according to claim 1, characterized in that, The working end of the working rod (1) is provided with a bit groove (17).

5. A simple bending screwdriver according to claim 1, characterized in that, The handle (2) is composed of a working part and a storage part (20) connected by threads to the working rod (1), and the storage part (20) has several bit placement slots (201) inside.

6. A simple bending screwdriver according to claim 2, characterized in that, A limiting block (122) is fixed at the opening of the insertion slot (121), and a limiting boss (131) is fixed on the outer edge of the sliding block (13). The diameter of the limiting boss (131) is larger than the diameter of the limiting block (122).

7. A simple bending screwdriver according to claim 3, characterized in that, There are two limiting grooves (34), which are located at both ends of the adjustment hole (30).

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