A direction-changing screw tightening device

Abstract

The present invention discloses a direction-changing screw screwing device, comprising: a screwdriver head, a force-applying assembly, a fixing assembly and a reversing transmission assembly; the reversing transmission assembly comprises an input end rotatably connected to the fixing assembly, an output end rotatably connected to the fixing assembly and a rigid force transmission member for transmitting power of the input end to the output end to drive the output end to rotate, the screwdriver head is rigidly connected to the output end, and the input end is rigidly connected to the force-applying assembly; the angle between the rotation axis of the input end and the rotation axis of the output end is greater than 0° and less than or equal to 90°. The direction-changing screw screwing device provided by the present invention can be applied to the screwing of screws in special positions, and has low cost and convenient operation.

Description

Technical Field

[0001] The present invention relates to the technical field of screw-tightening equipment, and more particularly to a direction-changing screw-tightening device. Background Art

[0002] Screws are very important connecting parts in the assembly of industrial equipment, especially in the robot body and control cabinet. Almost every module needs to be installed with screws. In the process of installing and removing screws, due to space limitations and connection requirements, many screws are installed in special positions, which makes it very inconvenient to install and remove them using ordinary straight screwdrivers.

[0003] In the prior art, in order to facilitate the disassembly and assembly of screws in special positions, a flexible screwdriver is provided. The flexible screwdriver is provided with a flexible rod 01. During the process of screwing the screw, the flexible rod 01 is bent to a large extent, which is very inconvenient to rotate. In addition, a variable-direction screwdriver is also provided, and the transmission direction of the screwdriver is changed by the bevel gear 02. However, the processing cost and difficulty of the bevel gear 02 are high, and the meshing contact area of ​​the bevel gear 02 is small, which makes it laborious to operate.

[0004] In summary, how to provide a low-cost and easy-to-tighten direction-changing screw tightening device is a problem that needs to be urgently solved by those skilled in the art. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a variable direction screw tightening device, which transmits the force applied by the force-applying component end to the screwdriver head through the reversing transmission component, and drives the screwdriver head to rotate. Since the angle between the rotation axis of the input end and the rotation axis of the output end is greater than 0° and less than or equal to 90°, the screwdriver head can be tightened when the angle between the central axis of the force-applying component and the central axis of the screwdriver head is greater than 0° and less than or equal to 90°. It is suitable for tightening screws in special positions, and has low cost and easy operation.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A direction-changing screw-tightening device comprises: a screwdriver head, a force-applying component, a fixing component and a direction-changing transmission component;

[0008] The reversing transmission assembly includes an input end rotatably connected to the fixed assembly, an output end rotatably connected to the fixed assembly, and a rigid force transmission member that transmits power from the input end to the output end to drive the output end to rotate, the screwdriver head is rigidly connected to the output end, and the input end is rigidly connected to the force application assembly;

[0009] An angle between the rotation axis of the input end and the rotation axis of the output end is greater than 0° and less than or equal to 90°.

[0010] Optionally, the input end is provided with an active member connected to the force-applying assembly, the output end is provided with a driven member connected to the screwdriver head, and one end of the rigid force transmission member is slidably provided on the active member, and the other end is slidably provided on the driven member.

[0011] Optionally, the rigid force transmission member is a rod-shaped structure, the active member is provided with at least two first through holes for one end of the rod-shaped structure to pass through, and the driven member is provided with at least two second through holes for the other end of the rod-shaped structure to pass through.

[0012] Optionally, the first through holes are evenly distributed along the circumferential direction of the active member, and the second through holes are evenly distributed along the circumferential direction of the driven member.

[0013] Optionally, the rigid force transmission member is an L-shaped sliding rod with a bending angle of 90°.

[0014] Optionally, the active member is provided with a first limit portion for limiting its axial movement relative to the fixed assembly, and the driven member is provided with a second limit portion for limiting its axial movement relative to the fixed assembly.

[0015] Optionally, the fixing assembly includes a first fixing cylinder, a second fixing cylinder and a connecting portion connecting the first fixing cylinder and the second fixing cylinder, the first fixing cylinder is sleeved on the outer periphery of the input end, and the second fixing cylinder is sleeved on the outer periphery of the output end.

[0016] Optionally, a central axis of the first fixed tube is perpendicular to a central axis of the second fixed tube.

[0017] Optionally, the force applying assembly is provided with a force applying handle, and the force applying handle is rigidly connected to the input end.

[0018] Optionally, the screwdriver head is provided with a hexagonal blind hole, and the output end is provided with a hexagonal connector that matches the hexagonal blind hole.

[0019] In the process of using the direction-changing screw tightening device provided by the present invention, the direction-changing screw tightening device needs to be assembled first. After the assembly is completed, the screwdriver head is aligned with the screw to be tightened, and the force-applying component is rotated. Since the force-applying component is rigidly connected to the input end, the input end will be driven to rotate during the rotation of the force-applying component. During the rotation of the input end, the power is transmitted to the output end through the rigid force transmission member, and the output end is driven to rotate. Since the output end is rigidly connected to the screwdriver head, the screwdriver head is driven to rotate to achieve the tightening of the screw. Since the angle between the rotation axis of the input end and the rotation axis of the output end is greater than 0° and less than or equal to 90°, during the rotation process, the angle between the rotation axis of the force-applying end and the rotation axis of the screwdriver head can be made greater than 0° and less than or equal to 90°, thereby achieving the tightening of screws in special positions.

[0020] Compared with the prior art, the direction-changing screw tightening device provided by the present invention can realize the tightening of screws in special positions. The setting of the rigid force transmission part will not cause bending and deformation during the power transmission process, making the use process more convenient and easy to operate; in addition, the reversing transmission component has a simple structure and low cost, which reduces the cost of the direction-changing screw tightening device and facilitates processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of a flexible screwdriver in the prior art;

[0023] Figure 2 It is a structural schematic diagram of a bevel gear screwdriver in the prior art;

[0024] Figure 3 It is a schematic diagram of the structure explosion of a specific embodiment of the direction-changing screw-tightening device provided by the present invention;

[0025] Figure 4 A schematic diagram of the rotation direction of each part of the direction-changing screw tightening device provided by the present invention;

[0026] Figure 5 It is a structural schematic diagram of a specific embodiment 1 of the position change of the L-shaped sliding rod during the rotation of the active member;

[0027] Figure 6 It is a structural schematic diagram of a specific embodiment 2 of the position change of the L-shaped sliding rod during the rotation of the active member;

[0028] Figure 7 It is a structural schematic diagram of a specific embodiment 3 of the position change of the L-shaped sliding rod during the rotation of the active member.

[0029] Figure 1-2 middle:

[0030] 01 is a flexible rod, 02 is a bevel gear;

[0031] Figure 3-7 middle:

[0032] 1 is an active member, 11 is a first through hole, 12 is a first limiting portion, 2 is a driven member, 21 is a second through hole, 22 is a second limiting portion, 3 is a fixing assembly, 31 is a first fixing cylinder, 32 is a second fixing cylinder, 33 is a connecting portion, 4 is a force handle, 5 is a screwdriver head, and 6 is an L-shaped sliding rod. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The core of the present invention is to provide a variable direction screw tightening device, which transmits the force applied by the end of the force-applying component to the screwdriver head through the reversing transmission component, and drives the screwdriver head to rotate. The screwdriver head can be tightened when the angle between the central axis of the force-applying component and the central axis of the screwdriver head is greater than 0° and less than or equal to 90°. It is suitable for tightening screws in special positions, and has low cost and easy operation.

[0035] Please refer to Figure 3-7 , Figure 3 It is a schematic diagram of the structure explosion of a specific embodiment of the direction-changing screw-tightening device provided by the present invention; Figure 4 A schematic diagram of the rotation direction of each part of the direction-changing screw tightening device provided by the present invention; Figure 5 It is a structural schematic diagram of a specific embodiment 1 of the position change of the L-shaped sliding rod during the rotation of the active member; Figure 6 It is a structural schematic diagram of a specific embodiment 2 of the position change of the L-shaped sliding rod during the rotation of the active member; Figure 7 It is a structural schematic diagram of a specific embodiment 3 of the position change of the L-shaped sliding rod during the rotation of the active member.

[0036] This specific embodiment discloses a direction-changing screw-tightening device, comprising: a screwdriver head 5, a force-applying component, a fixing component 3 and a direction-changing transmission component;

[0037] The reversing transmission assembly includes an input end rotatably connected to the fixed assembly 3, an output end rotatably connected to the fixed assembly 3, and a rigid force transmission member that transmits power from the input end to the output end to drive the output end to rotate, the screwdriver head 5 is rigidly connected to the output end, and the input end is rigidly connected to the force application assembly;

[0038] The angle between the rotation axis of the input end and the rotation axis of the output end is greater than 0° and less than or equal to 90°.

[0039] It should be noted that the function of the fixing component 3 is to axially fix the input end and the output end so that the input end and the output end can only rotate relative to the fixing component 3 but cannot move axially.

[0040] The force applying assembly may include a force applying handle 4, and the force applying handle 4 is rigidly connected to the input end. During use, the input end can be driven to rotate by rotating the force applying handle 4; or the force applying assembly may also be other structures that meet the requirements. Optionally, the surface of the force applying handle 4 is provided with anti-skid lines or anti-skid protrusions.

[0041] Optionally, the screwdriver head 5 can be detachably connected to the output end. During use, when screws of different types need to be screwed, screws of different types can be screwed by changing the screwdriver head 5. Specifically, a hexagonal blind hole can be provided on the screwdriver head 5, and a hexagonal connector matching the hexagonal blind hole can be provided on the output end. During use, the hexagonal connector needs to be inserted into the hexagonal blind hole.

[0042] The force-applying component can be detachably connected to the input end. During use, when the force-applying component or the input end needs to be disassembled and replaced, both can be disassembled and only one of them can be replaced. Optionally, a hexagonal blind hole can be provided in the force-applying component and a hexagonal connector can be provided at the input end. During use, the hexagonal connector needs to be inserted into the hexagonal blind hole.

[0043] It should be noted that the angle between the rotation axis of the input end and the rotation axis of the output end can be 90°, or a value greater than 0° and less than 90°, which is determined according to actual conditions and will not be elaborated here.

[0044] The central axis of the screwdriver head 5 is arranged in a collinear relationship with the central axis of the output end, and the central axis of the force-applying component is arranged in a collinear relationship with the central axis of the input end.

[0045] In the process of using the direction-changing screw tightening device provided by this specific embodiment, the direction-changing screw tightening device needs to be assembled first. After the assembly is completed, the screwdriver head 5 is aligned with the screw to be tightened, and the force-applying component is rotated. Since the force-applying component is rigidly connected to the input end, the input end will be driven to rotate during the rotation of the force-applying component. During the rotation of the input end, the power is transmitted to the output end through the rigid force transmission member, and the output end is driven to rotate. Since the output end is rigidly connected to the screwdriver head 5, the screwdriver head 5 is driven to rotate to achieve the tightening of the screw. Since the angle between the rotation axis of the input end and the rotation axis of the output end is greater than 0° and less than or equal to 90°, during the rotation process, the angle between the rotation axis of the force-applying end and the rotation axis of the screwdriver head 5 can be made greater than 0° and less than or equal to 90°, thereby achieving the tightening of screws in special positions.

[0046] Compared with the prior art, the direction-changing screw tightening device provided in this specific embodiment can realize the tightening of screws in special positions. The setting of the rigid force transmission part will not cause bending and deformation during the power transmission process, making the use process more convenient and easy to operate; in addition, the reversing transmission component has a simple structure and low cost, which reduces the cost of the direction-changing screw tightening device and facilitates processing.

[0047] Based on the above embodiment, an active part 1 connected to the force-applying component can be set at the input end, and a driven part 2 connected to the screwdriver head 5 can be set at the output end. One end of the rigid force transmission member can be slidably set on the active part 1, and the other end can be slidably set on the driven part 2.

[0048] During use, the active part 1 rotates, which drives the rigid force transmission part to rotate, and the end of the rigid force transmission part connected to the active part 1 slides relative to the active part 1. During the rotation of the rigid force transmission part, power is transmitted to the driven part 2, driving the driven part 2 to rotate, and the end of the rigid force transmission part connected to the driven part 2 slides relative to the driven part 2.

[0049] It should be noted that in the process of the active member 1 driving the driven member 2 to rotate, the sliding direction of the rigid force transmission member relative to the active member 1 may be along the axial direction of the active member 1 or may not be along the axial direction of the active member 1, and the sliding direction of the rigid force transmission member relative to the driven member 2 may be along the axial direction of the driven member 2 or may not be along the axial direction of the driven member 2, which is determined according to actual conditions.

[0050] Optionally, the rigid force transmission member can be set as a rod-shaped structure, the active member 1 is provided with at least two first through holes 11 for one end of the rod-shaped structure to pass through, and the driven member 2 is provided with at least two second through holes 21 for the other end of the rod-shaped structure to pass through.

[0051] Furthermore, the first through holes 11 can be evenly distributed along the circumferential direction of the active member 1 , and the second through holes 21 can be evenly distributed along the circumferential direction of the driven member 2 .

[0052] It should be noted that the sizes of the first through hole 11 and the second through hole 21 need to match the size of the rigid force transmission member. During use, it is necessary to ensure that the rigid force transmission member can slide relative to the first through hole 11 and the second through hole 21 without shaking.

[0053] like Figure 1 , 2 As shown, the rigid force transmission member can be an L-shaped slide bar 6 with a bending angle of 90°. Of course, the rigid force transmission member can also be a bent rod-shaped structure with other angles, for example: the bending angle is 120°, 80°, etc., which is determined according to actual conditions.

[0054] In order to limit the axial movement of the active member 1 relative to the fixed component 3 and the axial movement of the driven member 2 relative to the fixed component 3, a first limiting portion 12 for limiting its axial movement relative to the fixed component 3 can be provided on the active member 1, and a second limiting portion 22 for limiting its axial movement relative to the fixed component 3 can be provided on the driven member.

[0055] The first limiting portion 12 and the second limiting portion 22 can limit the axial movement of the active member 1 relative to the fixed component 3 and the axial movement of the driven member 2 relative to the fixed component 3. In the process of rotating the force-applying component, the active member 1 and the driven member 2 can only rotate relative to the fixed component 3, so that the force transmission efficiency is higher. The screw can be screwed without applying a large force.

[0056] On the basis of the above embodiment, the fixing assembly 3 can include a first fixing cylinder 31, a second fixing cylinder 32 and a connecting portion 33 connecting the first fixing cylinder 31 and the second fixing cylinder 32, the first fixing cylinder 31 is sleeved on the outer periphery of the input end, and the second fixing cylinder 32 is sleeved on the outer periphery of the output end.

[0057] The connecting portion 33 only needs to connect the first fixing tube 31 and the second fixing tube 32 and can be any structure and shape that meets the requirements.

[0058] Based on this specific embodiment, the first limiting portion 12 can be a first annular boss disposed on the outer periphery of the active member 1, and the size of the first annular boss is larger than the inner diameter of the first fixed cylinder 31. Figure 1 As shown; the second limiting portion 22 is a second annular boss disposed on the outer periphery of the follower 2, and the size of the second annular boss is larger than the inner diameter of the second fixed cylinder 32, as shown in detail Figure 1 shown.

[0059] Optionally, the central axis of the first fixed tube 31 can be perpendicular to the central axis of the second fixed tube 32. Of course, other angles that meet the requirements can also be used, which are determined according to actual conditions.

[0060] Optionally, the force-applying component, the fixing component 3 , the reversing transmission component and other parts mentioned in the present application may all be configured as rigid structural parts.

[0061] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. Any combination of all embodiments provided by the present invention is within the protection scope of this invention and will not be described in detail here.

[0062] The above is a detailed introduction to the direction-changing screw tightening device provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A direction-changing screw-tightening device, characterized in that: include: A screwdriver head (5), a force-applying component, a fixing component (3), and a reversing transmission component; The reversing transmission assembly comprises an input end rotatably connected to the fixed assembly (3), an output end rotatably connected to the fixed assembly (3), and a rigid force transmission member for transmitting power from the input end to the output end to drive the output end to rotate, the screwdriver head (5) is rigidly connected to the output end, and the input end is rigidly connected to the force application assembly; The angle between the rotation axis of the input end and the rotation axis of the output end is greater than 0° and less than or equal to 90°; The input end is provided with an active member (1) connected to the force-applying assembly, the output end is provided with a driven member (2) connected to the screwdriver head (5), one end of the rigid force-transmitting member is slidably provided on the active member (1), and the other end is slidably provided on the driven member (2); The rigid force transmission member is a rod-shaped structure, the active member (1) is provided with at least two first through holes (11) for one end of the rod-shaped structure to pass through, and the driven member (2) is provided with at least two second through holes (21) for the other end of the rod-shaped structure to pass through; The first through holes (11) are evenly distributed along the circumferential direction of the active member (1), and the second through holes (21) are evenly distributed along the circumferential direction of the driven member (2); The rigid force transmission member is an L-shaped sliding rod (6) with a bending angle of 90°.

2. The direction-changing screw-tightening device according to claim 1, characterized in that: The active member (1) is provided with a first limiting portion (12) for limiting its axial movement relative to the fixed assembly (3), and the driven member (2) is provided with a second limiting portion (22) for limiting its axial movement relative to the fixed assembly (3).

3. The direction-changing screw tightening device according to claim 1 or 2, characterized in that: The fixing assembly (3) comprises a first fixing cylinder (31), a second fixing cylinder (32) and a connecting portion (33) connecting the first fixing cylinder (31) and the second fixing cylinder (32); the first fixing cylinder (31) is sleeved on the outer periphery of the input end, and the second fixing cylinder (32) is sleeved on the outer periphery of the output end.

4. The direction-changing screw-tightening device according to claim 3, characterized in that: The central axis of the first fixed cylinder (31) is perpendicular to the central axis of the second fixed cylinder (32).

5. The direction-changing screw-tightening device according to any one of claims 1 to 4, characterized in that: The force applying component is provided with a force applying handle (4), and the force applying handle (4) is rigidly connected to the input end.

6. The direction-changing screw-tightening device according to any one of claims 1 to 4, characterized in that: The screwdriver head (5) is provided with a hexagonal blind hole, and the output end is provided with a hexagonal connector that matches the hexagonal blind hole.

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