Screwdriver auxiliary device

Abstract

The utility model provides a screwdriver auxiliary device which comprises a movable sleeve, a fixed ring and a spring, the fixed ring is fixedly arranged on a screwdriver rod of a screwdriver and close to the end of the screwdriver rod, the movable sleeve is a cylindrical shell, the movable sleeve and the screwdriver rod are coaxial and are arranged outside the fixed ring in a sleeved mode, the movable sleeve and the fixed ring are connected in a sliding mode, and the spring is arranged on the movable sleeve. First via holes matched with the cutter bar are formed in the two ends of the movable sleeve, the spring and the cutter bar are coaxial and arranged in the movable sleeve, one end of the spring is fixedly connected with the end, away from the end of the cutter bar, of the movable sleeve, and the other end of the spring is fixedly connected with the fixing ring. A first notch is formed in the side wall, close to the end of the cutter bar, of the movable sleeve, a second notch communicated with the corresponding first via hole is formed in the end face, close to the first notch, of the movable sleeve, and the first notch and the second notch are in a communicated state. The problem that a screw cannot be stably fixed to the end of the screwdriver is solved, and stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware tools, in particular to a screwdriver auxiliary device. Background Art

[0002] During daily life when installing screws, it is necessary to hold the screw by hand for positioning and then use a screwdriver for fastening. However, during the actual operation process, the screw is likely to fall off, resulting in low work efficiency. In the prior art, the end of the screwdriver shank is magnetized so that the screw can be adsorbed at the end of the screwdriver shank, avoiding the need for hand positioning. However, because the magnetism at the end of the shank is small, the screw cannot be stably fixed in an environment with severe shaking. In addition, when the screw is made of non-magnetic material, the screwdriver cannot use magnetic adsorption. Summary of the Utility Model

[0003] Aiming at the deficiencies in the prior art, the utility model provides a screwdriver auxiliary device, which solves the problem that the screw cannot be stably fixed at the end of the screwdriver in the prior art.

[0004] According to an embodiment of the utility model, a screwdriver auxiliary device includes a movable sleeve, a fixed ring and a spring. The fixed ring is fixedly arranged on the shank of the screwdriver and close to the end of the shank. The movable sleeve is a cylindrical shell. The movable sleeve and the shank are coaxial and the movable sleeve sleeved outside the fixed ring. The movable sleeve and the fixed ring are slidably connected. Both ends of the movable sleeve are provided with first through holes adapted to the shank. The spring and the shank are coaxial and arranged inside the movable sleeve. One end of the spring is fixedly connected to the end of the movable sleeve far from the end of the shank, and the other end of the spring is fixedly connected to the fixed ring. A first notch is arranged on the side wall of the movable sleeve close to the end of the shank. A second notch communicating with the corresponding first through hole is arranged on the end face of the movable sleeve close to the first notch. The first notch and the second notch are in a communicating state. The first notch and the second notch are used for placing the head of the screw into the movable sleeve.

[0005] The technical principle of the utility model is as follows: Place the screw head inside the movable sleeve. The spring makes the end of the shank abut against the screw head and pushes the screw head to abut against the end of the inner cavity of the movable sleeve. The screw head is clamped by the end of the movable sleeve and the shank.

[0006] Preferably, the first notch is an arc-shaped structure, and the radian of the first notch is greater than or equal to 180 degrees.

[0007] Preferably, the fixed ring is a cylindrical structure. A second through hole adapted to the shank is arranged inside the fixed ring. A plurality of screw holes for installing set screws are arranged around the side wall of the fixed ring. A plurality of third through holes corresponding to the screw holes are arranged around the side wall of the movable sleeve.

[0008] Preferably, a tapered hole is provided at the opening of the first through hole near the end of the tool bar, and the tapered hole is located inside the movable sleeve.

[0009] Preferably, it further includes an arc-shaped baffle. The radian of the arc-shaped baffle is adapted to the outer contour of the movable sleeve. The arc-shaped baffle is slidably connected to the movable sleeve, and the arc-shaped baffle is located at the axial position of the movable sleeve where the first notch is located.

[0010] Preferably, the fixing ring and the tool bar are welded or integrally formed.

[0011] Compared with the prior art, the utility model has the following beneficial effects: The structure of the utility model is simple. When in use, the first notch and the second notch of the movable sleeve are moved to one end away from the tool bar, so that the head of the screw can enter the inside of the movable sleeve from the first notch, and the screw and the tool bar are in a coaxial state. Then, the movable sleeve is released, and both ends of the screw head are clamped by the inner end face of the movable sleeve and the head of the tool bar. The force generated by the spring is greater than the suction force after magnetizing the head of the tool bar, making the connection between the screw and the tool bar more stable. When the screw is made of a non-metallic material or cannot be magnetically adsorbed, the utility model can still fix the screw. Description of the Drawings

[0012] Figure 1 is a perspective view of the utility model.

[0013] Figure 2 is a schematic diagram of the positions of the first notch and the second notch of the utility model.

[0014] In the above-mentioned drawings: 1. Tool bar; 2. Movable sleeve; 3. Spring; 4. Fixing ring; 5. Arc-shaped baffle; 6. Screw; 7. First notch; 8. Second notch; 9. First through hole. Detailed Embodiments

[0015] The technical solutions in the utility model will be further described below with reference to the drawings and embodiments.

[0016] Such as Figure 1 、 2As shown in the figure, an embodiment of the present utility model provides a screwdriver auxiliary device. The end of the screwdriver shank 1 is in a flat head or cross head shape. The auxiliary device includes a movable sleeve 2, a fixing ring 4, and a spring 3. The fixing ring 4 is fixedly arranged on the screwdriver shank 1 and close to the end of the shank 1. The movable sleeve 2 is a cylindrical shell. The movable sleeve 2 and the shank 1 are coaxial and sleeved outside the fixing ring 4. The movable sleeve 2 and the fixing ring 4 are slidably connected. The inner hole diameter of the movable sleeve 2 is adapted to the outer diameter of the fixing ring 4. Both ends of the movable sleeve 2 are provided with first through holes 9 adapted to the shank 1. The first through holes 9 and the shank 1 are in clearance fit. The spring 3 is coaxial with the shank 1 and arranged inside the movable sleeve 2. One end of the spring 3 is fixedly connected to the end of the movable sleeve 2 away from the end of the shank 1, and the other end of the spring 3 is fixedly connected to the fixing ring 4. A first notch 7 is provided on the side wall of the movable sleeve 2 close to the end of the shank 1. A second notch 8 communicating with the corresponding first through hole 9 is provided on the end face of the movable sleeve 2 close to the first notch 7. The first notch 7 and the second notch 8 are in a communicating state. The first notch 7 and the second notch 8 are used to place the head of the screw 6 into the movable sleeve 2. The head of the screw 6 enters the inside of the movable sleeve 2 from the first notch 7, and the threaded section of the screw 6 moves from the second notch 8 to the first through hole 9. When in use, the user needs to push the movable sleeve 2 towards the end away from the shank 1. The spring 3 is compressed, and the end of the shank 1 retracts into the movable sleeve 2. Then, when the screw 6 enters, the shank 1 will not block. After the placement is completed, the user makes the spring 3 push the movable sleeve 2 and the shank 1 to move relative to each other, and the end of the shank 1 abuts against the head of the screw 6. In this embodiment, a detachable sealing cover is provided at the end of the movable sleeve 2 away from the first notch 7, which is convenient for placing the spring 3 and the fixing ring 4 inside.

[0017] Preferably, the first notch 7 is in an arc structure, and the radian of the first notch 7 is greater than or equal to 180 degrees, so that a screw head 6 adapted to the inner hole diameter of the movable sleeve 2 can be placed inside the movable sleeve 2, and the first notch 7 will not affect the entry of the screw head 6. When the first notch 7 is too small, it will affect the insertion of the screw head 6, making the operation inconvenient.

[0018] Preferably, the fixing ring 4 is in a cylindrical structure. A second through hole adapted to the shank 1 is provided inside the fixing ring 4. A plurality of screw holes for installing set screws are provided around the side wall of the fixing ring 4. A plurality of third through holes corresponding to the screw holes are provided around the side wall of the movable sleeve 2. When it is necessary to disassemble the auxiliary device, a tool is inserted through the third through hole to loosen the set screw abutting against the shank 1, and the shank 1 can be pulled out of the movable sleeve 2. When it is necessary to install the auxiliary device on the shank 1, the shank 1 is inserted into the inside of the movable sleeve 2, and then the set screw is tightened. The third through hole also plays a role in reducing weight and saving materials.

[0019] Preferably, a tapered hole is provided at the opening of the first through hole 9 near the end of the tool bar 1, and the tapered hole is located inside the movable sleeve 2. When it is necessary to tighten the conical screw head, after the screw head is placed in the movable sleeve 2, the contact surface between the screw head and the movable sleeve 2 increases, and the screw 6 is more stable at the end of the tool bar 1.

[0020] Preferably, it further includes an arc-shaped baffle 5. The radian of the arc-shaped baffle 5 is adapted to the outer contour of the movable sleeve 2. The arc-shaped baffle 5 is slidably connected to the movable sleeve 2, and the arc-shaped baffle 5 is located at the axial position of the movable sleeve 2 where the first notch 7 is located. When working in an environment with severe shaking, the screw head is placed inside the movable sleeve 2, and then the arc-shaped baffle 5 is rotated to the first notch 7, so that the screw will not be separated from the screwdriver even if it is collided.

[0021] Preferably, the fixing ring 4 and the tool bar 1 are welded or integrally formed, making the structure of this auxiliary device more stable and reliable. When the screw 6 is screwed in, the present utility model enables the screw 6 and the tool bar 1 to always remain coaxial and can be perpendicular to the screwing-in area. After a part of the screw 1 enters the screwing-in area, the head of the screw 1 is taken out from the movable sleeve 2, and then the head of the tool bar 1 is extended from the movable sleeve 2 to make the head of the tool bar 1 abut against the head of the screw 1, so as to avoid the head of the screw 1 and the screwing-in area with the movable sleeve 2 in between, so that the screw 1 can be fully screwed in.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present utility model, and they should all be covered within the scope of the claims of the present utility model.

Claims

1. A screwdriver auxiliary device, characterized in that: It includes a movable sleeve (2), a fixed ring (4) and a spring (3). The fixed ring (4) is fixedly arranged on the shank (1) of the screwdriver and near the end of the shank (1). The movable sleeve (2) is a cylindrical shell. The movable sleeve (2) and the shank (1) are coaxial and sleeved outside the fixed ring (4). The movable sleeve (2) and the fixed ring (4) are slidably connected. Both ends of the movable sleeve (2) are provided with first through holes (9) adapted to the shank (1). The spring (3) is coaxial with the shank (1) and arranged inside the movable sleeve (2). One end of the spring (3) is fixedly connected to the end of the movable sleeve (2) far from the end of the shank (1), and the other end of the spring (3) is fixedly connected to the fixed ring (4). A first notch (7) is provided on the side wall of the movable sleeve (2) near the end of the shank (1). A second notch (8) communicating with the corresponding first through hole (9) is provided on the end face of the movable sleeve (2) near the first notch (7). The first notch (7) and the second notch (8) are in a communicating state. The first notch (7) and the second notch (8) are used to place the head of the screw (6) into the movable sleeve (2).

2. The screwdriver assisting device according to claim 1, characterized in that: The first notch (7) is an arc-shaped structure, and the radian of the first notch (7) is greater than or equal to 180 degrees.

3. The screwdriver assisting device according to claim 1, characterized in that: The fixed ring (4) is a cylindrical structure. A second through hole adapted to the shank (1) is provided inside the fixed ring (4). A number of screw holes for installing set screws are provided around the side wall of the fixed ring (4). A number of third through holes corresponding to the screw holes are provided around the side wall of the movable sleeve (2).

4. The screwdriver assisting device according to claim 1, wherein: A tapered hole is provided at the opening of the first through hole (9) near the end of the shank (1), and the tapered hole is located inside the movable sleeve (2).

5. The screwdriver assisting device according to claim 1, wherein: It further includes an arc-shaped baffle (5). The radian of the arc-shaped baffle (5) is adapted to the outer contour of the movable sleeve (2). The arc-shaped baffle (5) and the movable sleeve (2) are slidably connected. The arc-shaped baffle (5) is located at the axial position of the movable sleeve (2) where the first notch (7) is located.

6. The screwdriver assisting device according to claim 1, characterized in that: The fixed ring (4) and the shank (1) are welded or integrally formed.

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