Nut driver

Abstract

The utility model discloses a nut driver which comprises a driving head, the driving head comprises a driver connecting section and a driver main body section, the driver connecting section is fixedly connected with the driver main body section, the driver connecting section is connected with a power device, and the driver main body section can rotate under the driving of the driver connecting section. The driver body section is hollow to form a containing cavity, a driving friction pad is arranged in the containing cavity, the inner diameter of the containing cavity is equal to or larger than the outer diameter of the nut, the nut is arranged in the containing cavity, the axis of the nut coincides with or is adjacent to the axis of the driver, and the end face of the nut is in friction transmission with the end face of the driving friction pad. The nut can be driven by the driving friction pad as long as the nut makes contact with the driving friction pad and has certain friction force, the driving friction pad can drive hexagonal nuts, cylindrical nuts, spherical nuts and other nuts of various specifications, and the nut driving device is simple and efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of screw and nut assembly, and specifically, it refers to a nut driver. Background Art

[0002] Most screws refer to the threaded part of fasteners such as screws and bolts. A bolt is a type of fastener composed of a head and a screw (a cylinder with external threads), and it needs to be used in conjunction with a nut; a stud has threads at both ends, and the threaded part is called a screw. It is a fastener without a head and is often used in combination with a nut. Stud connections can be disassembled, so many workpieces that are often disassembled use studs; a through-thread screw is a screw with threads throughout its body, so it is also called a full-thread screw and a full-threaded screw, and it is often used in combination with a nut; a nut is a screw cap, a part used to tighten together with a screw.

[0003] Currently, when assembling a nut and a screw, a nut socket is mainly used for assembly. The nut socket is mostly a hexagonal structure adapted to the nut. Such a nut socket must require the nut to have certain edges and corners so as to drive the nut. If the nut is cylindrical, spherical, etc., the existing socket cannot drive it to be screwed with the screw. Summary of the Invention

[0004] The technical problem to be solved by the utility model is aimed at the above-mentioned current technical situation, and provides a nut driver. The driving friction pad of the utility model adopts friction transmission with the nut end face. When there are damaged teeth on the nut or the screw, the nut transmission is blocked, and a slipping phenomenon occurs between the nut and the driving friction pad, causing the nut to stop rotating, thereby avoiding the screw from cutting the hand. The end face friction transmission between the nut end face and the driving friction pad can drive the nut as long as there is a certain frictional force when the nut contacts the driving friction pad. The driving friction pad can drive nuts of various specifications such as hexagonal nuts, cylindrical nuts, and spherical nuts, which is simple and efficient.

[0005] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0006] A nut driver includes a driving head. The driving head includes a driver connection section and a driver main body section. The driver connection section and the driver main body section are fixedly connected. The driver connection section is connected to a power device. Driven by the driver connection section, the driver main body section can rotate. The inside of the driver main body section is hollow to form a receiving cavity. A driving friction pad is arranged in the receiving cavity. The inner diameter of the receiving cavity is equal to or larger than the outer diameter of the nut. The nut is placed in the receiving cavity. The axis of the nut coincides with or is adjacent to the axis of the driver. The end face of the nut and the end face of the driving friction pad are in friction transmission.

[0007] To optimize the above technical solution, the measures taken further include:

[0008] The above-mentioned drive connection section includes a main body connection seat, a connection hole is provided at the center of the main body connection seat, and the connection hole is connected to the output shaft of the power device.

[0009] The interior of the above-mentioned drive connection section is hollow and communicates with the accommodation cavity of the drive main body section. The drive connection section is supported on the bearing seat through a bearing, the bearing seat is fixed on the bracket, and the drive connection section is in transmission cooperation with the power device.

[0010] The above-mentioned power device is fixed on the bracket, an outer sleeve is sleeved on the drive main body section, the outer sleeve is fixedly connected to the bracket, and the upper end of the outer sleeve is flush with the upper end of the drive or the upper end of the outer sleeve is higher than the upper end of the drive.

[0011] A flange flange disc is formed at the lower end of the above-mentioned outer sleeve, corresponding mounting holes are formed on the flange flange disc and the bracket and are connected through fasteners.

[0012] The above-mentioned drive connection section includes a main body connection seat and a clamping shaft. The clamping shaft is fixedly arranged on the main body connection seat and the two are integrally formed. The drive connection section is fixedly installed on the fixture of the power device through the clamping shaft.

[0013] A through hole is provided at the center of the above-mentioned drive friction pad.

[0014] An introduction edge port is provided at the entrance of the accommodation cavity of the above-mentioned drive main body section.

[0015] A protective tube is arranged in the above-mentioned accommodation cavity, and the outer wall of the protective tube fits with the inner wall of the accommodation cavity.

[0016] A regulating rod capable of adjusting the screwed length of the nut and the screw is arranged below the above-mentioned drive friction pad.

[0017] A nut driver of the present utility model includes a drive head. The drive head includes a drive connection section and a drive main body section. The drive connection section is fixedly connected to the drive main body section. The drive connection section is connected to the power device. Driven by the drive connection section, the drive main body section can rotate. The interior of the drive main body section is hollow to form an accommodation cavity. A drive friction pad is arranged in the accommodation cavity. The inner diameter of the accommodation cavity is equal to or greater than the outer diameter of the nut. The nut is placed in the accommodation cavity. The axis of the nut coincides with or is adjacent to the axis of the drive. The end face of the nut and the end face of the drive friction pad are in frictional transmission. As long as there is a certain frictional force when the nut contacts the drive friction pad, the nut can be driven by the drive friction pad. The drive friction pad can drive nuts of various specifications such as hexagonal nuts, cylindrical nuts, and spherical nuts, which is simple and efficient. Description of the Drawings

[0018] Figure 1 It is a three-dimensional structural schematic diagram of Embodiment 1 of the present utility model;

[0019] Figure 2 It is a schematic structural diagram after removing the outer sleeve tube in the first embodiment of the present utility model;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the driving head in the first embodiment of the present utility model;

[0021] Figure 4 It is a structural sectional view in the first embodiment of the present utility model;

[0022] Figure 5 It is a three-dimensional structural schematic diagram of the second embodiment of the present utility model;

[0023] Figure 6 It is a structural sectional view of the second embodiment of the present utility model;

[0024] Figure 7 It is a three-dimensional structural schematic diagram of the third embodiment of the present utility model;

[0025] Figure 8 It is a structural sectional view of the third embodiment of the present utility model;

[0026] Figure 9 It is a schematic diagram of the usage mode of the third embodiment of the present utility model. Specific embodiments

[0027] The following further describes the embodiments of the present utility model in detail with reference to the accompanying drawings.

[0028] Figures 1 to 9 It is a structural schematic diagram of the present utility model.

[0029] The reference numerals therein are: drive connection section 1, main body connection seat 11, connection hole 12, clamping shaft 13, drive main body section 2, accommodation cavity 21, introduction edge opening 22, protective tube 23, power device 3, fixture 31, drive friction pad 4, through hole 41, bearing seat 5, driving wheel 51, driven wheel 52, transmission belt 53, fixed seat 54, bracket 6, outer sleeve tube 7, flange flange plate 71, regulation rod 8, adsorption magnet 9.

[0030] The following further describes the present utility model in detail with reference to the accompanying drawings: Embodiment

[0031] As Figures 1 to 4 shown,

[0032] A nut driver includes a driving head. The driving head includes a driver connection section 1 and a driver body section 2. The driver connection section 1 and the driver body section 2 are fixedly connected. The driver connection section 1 is connected to a power device 3. The power device is a prior art, such as a motor, a hand drill, a rechargeable drill, etc. The driver connection section 1 is connected to the output shaft of the motor. It can be connected by plugging, and the plugging method will be introduced in detail later. Or it can be connected by a coupling. When using a coupling, the output shaft of the motor and the driver connection section 1 are respectively plugged into the corresponding fixing holes of the coupling and locked by locking screws. Driven by the driver connection section 1, the driver body section 2 can rotate. The inside of the driver body section 2 is hollow to form a receiving cavity 21. The inner wall of the receiving cavity 21 is a smooth arc surface, which will not scratch the nut when in contact with the nut. A driving friction pad 4 is arranged in the receiving cavity 21. The driving friction pad 4 can be made of wear-resistant materials with a certain friction force, such as silica gel, rubber, etc. There is a certain friction force between the driving friction pad 4 and the nut. The distance between the driving surface of the driving friction pad 4 and the entrance of the receiving cavity 21 is slightly greater than the thickness of the nut. The inner diameter of the receiving cavity 21 is equal to or greater than the outer diameter of the nut. The nut is placed in the receiving cavity 21, and the axis of the nut coincides with or is adjacent to the axis of the driver. The outer diameter of the nut is the diagonal dimension or the maximum diameter of the nut, so that the axis of the nut coincides with or is adjacent to the axis of the driver. In this way, when the nut rotates together with the driver, the nut thread hole is in the central position, which is convenient for the screw to align with the nut thread hole. The end face of the nut and the end face of the driving friction pad 4 are in frictional transmission. When there are damaged teeth on the nut or the screw, the transmission of the nut is blocked, and a slipping phenomenon occurs between the nut and the driving friction pad, causing the nut to stop rotating, thus avoiding the screw from cutting the hand. The end face of the nut and the end face of the driving friction pad 4 are in frictional transmission. As long as there is a certain friction force when the nut is in contact with the driving friction pad, the nut can be driven by the driving friction pad. The driving friction pad can drive nuts of various specifications, such as hexagonal nuts, cylindrical nuts, spherical nuts, etc., which is simple and efficient.

[0033] The power device 3 is a motor. The motor is fixed on a bracket 6 through a motor bracket. When the power device 3 is a DC motor, it also includes a power adapter and a switch. The DC motor, the power adapter and the switch are electrically connected by wires. The switch can control the forward and reverse rotation of the DC motor. A speed regulator for adjusting the speed of the DC motor is arranged on the power adapter; when the power device 3 is an AC motor, it can be electrically connected to the power supply through a wire. A switch and a power plug are arranged on the wire. The switch can control the forward and reverse rotation of the AC motor. It also includes a speed regulator. The speed regulator is electrically connected to the AC motor through a wire. The speed regulator can adjust the speed of the AC motor.

[0034] The drive connection section 1 includes a main body connection seat 11. A connection hole 12 is provided at the center of the main body connection seat 11. The connection hole 12 is connected to the output shaft of the power device 3, which can adopt a threaded connection or a plug-in connection. In the present utility model, the main body connection seat 11 is radially provided with threaded holes, and the output shaft of the power device 3 is locked by locking screws. A step is formed between the main body connection seat 11 and the drive main body section 2, which can prevent the drive friction pad 4 from moving towards the main body connection seat 11.

[0035] The power device 3 is fixed on the bracket 6. The bracket 6 is provided with screw holes for fixing to the workbench and is fixed to the workbench by screws. An outer sleeve 7 is sleeved on the drive main body section 2. The outer sleeve 7 is connected and fixed to the bracket 6. The upper end of the outer sleeve 7 is flush with the upper end of the drive or the upper end of the outer sleeve 7 is higher than the upper end of the drive. Since the drive head rotates, when the hand puts the nut, it is easy to touch and cause injury. At the same time, when the nut touches the upper end of the drive head, it is also easy to be carried away. Therefore, the outer sleeve 7 can well solve the above problems. When putting the nut, the nut can first contact the outer sleeve 7 and then be pushed into the receiving cavity 21, effectively solving the problem of the nut being carried away and improving the putting efficiency. At the same time, it plays a protective role for the hand and greatly improves safety.

[0036] The outer sleeve 7 is detachably connected to the bracket 6. A flange flange plate 71 is formed at the lower end of the outer sleeve 7. Corresponding mounting holes are formed on the flange flange plate 71 and the bracket 6 and are connected by fasteners, which is convenient for replacing the outer sleeve 7 adapted to the drive head and improving the adaptation range of the machine.

[0037] A through hole 41 is provided at the center of the drive friction pad 4. The diameter of the through hole is smaller than the outer diameter of the nut and larger than the outer diameter of the corresponding screw rod. It can both drive the nut and ensure that the screw rod can penetrate into the through hole. In this way, the nut can be screwed with the screw rod for a certain distance. In order to reduce the manufacturing cost, a sleeve (not shown in the figure) can be embedded in the main body section, thereby reducing the thickness of the drive friction pad and ensuring that the drive friction pad will not move.

[0038] An introduction edge 22 is provided at the entrance of the receiving cavity 21 of the drive main body section 2. The introduction edge 22 has a smooth transition, which is convenient for putting the nut into the receiving cavity 21 of the drive main body section 2.

[0039] A protective tube 23 is arranged in the receiving cavity 21. The outer wall of the protective tube 23 fits with the inner wall of the receiving cavity 21. The hardness of the protective tube 23 is lower than that of the nut, and the nut will not be bruised or scratched when it touches the protective tube 23.

[0040] A regulating rod 8 capable of adjusting the screwing length of the nut and the screw is provided below the driving friction pad 4. The connecting hole 12 at the center of the main body connecting seat 11 is fixed with the regulating rod. The upper end of the regulating rod is located inside the main body section. The regulating rod is inserted into the connecting hole and locked by a locking screw. There is a certain distance between the upper end of the regulating rod and the outer driving surface of the driving friction pad. The regulation is carried out by changing the distance between the regulating rod and the outer driving surface of the driving friction pad. The regulating rod can block the screw from continuing to enter the through hole, so as to adjust the length of the nut screwed on the screw.

[0041] Ventilation holes are correspondingly arranged on the protective tube and the outer wall of the main body section of the driver. Frictional transmission will generate heat, and the ventilation holes play a role in cooling. At the same time, the debris rubbed off from the driving friction pad can be thrown out through the ventilation holes.

[0042] Friction textures are provided on the contact surface between the driving friction pad and the nut.

[0043] The usage method of the present invention:

[0044] The nut driver is connected to the power device. The power switch is turned on, and the power device works. Driven by the connecting section of the driver, the main body section of the driver can rotate. The nut is placed into the accommodating cavity from the opening of the accommodating cavity. When placing, the screw hole of the nut needs to face outward. After placing, the screw hole of the nut faces the opening of the accommodating cavity. Since the inner diameter of the protective tube is slightly larger than the outer diameter of the nut, the axis of the nut coincides or is close to coinciding with the axis of the driver. The nut rotates together with the driver. The screw is aligned with the screw hole of the nut and pressed inward to make the nut fit with the driving friction pad. The frictional force increases to make the nut screwed with the screw. The nut is screwed on the screw, and the end of the screw enters the through hole of the driving friction pad. When the screw touches the upper end of the regulating rod and stops moving, it means that the nut is screwed to the predetermined position. The screw is pulled outwards to take out the nut to complete the assembly. The nut is continuously placed into the accommodating cavity from the opening of the accommodating cavity and the above actions are repeated to complete the subsequent assembly of the screw and the nut; when disassembling the nut, the screw and the nut are inserted into the protective tube together to make the nut fit with the driving friction pad, and the power device rotates in reverse to be able to disassemble the nut. Embodiment

[0045] Such as Figures 5 to 6As shown in the figure, the nut driver in this embodiment has basically the same structure as the nut driver in the first embodiment. The difference is that in this embodiment, the driver connection section 1 is supported on the bearing seat 5 through a bearing, and the bearing seat 5 is fixed on the bracket 6. There is a transmission cooperation between the driver connection section 1 and the power device 3. The transmission parts include a driving wheel 51, a driven wheel 52 and a transmission belt 53. The driving wheel 51 is connected to the output shaft of the power device, the driven wheel 52 is sleeved and fixed on the driver connection section 1, and the transmission belt 53 is sleeved on the driving wheel 51 and the driven wheel 52. The driving wheel 51 drives the driven wheel 52 to rotate through the transmission belt 53, so as to realize the rotation of the driving head. Screw holes are provided on both the driving wheel 51 and the driven wheel 52 and are locked by corresponding locking screws. The inner part of the driver connection section 1 of the driving head and the inner accommodation cavity 21 of the driver main body section 2 are mutually communicated to form a stepped hole, which can prevent the driving friction pad from moving towards the connection section. The advantage of this embodiment is that the screwing length of the nut and the screw will not be limited by the length of the driving head, so as to realize the long-distance screwing of the nut and the screw.

[0046] A fixing seat 54 is provided on the bracket 6. A rod hole is provided on the fixing seat 54, and the rod hole is aligned with the center of the driving head. The adjusting rod can be inserted into the rod hole and move up and down along the axial direction of the rod hole to adjust the length of the nut screwed on the screw, and is locked by the locking screw on the fixing seat 54. Embodiment

[0047] As Figures 7 to 9 As shown in the figure, the nut driver in this embodiment has basically the same structure as the nut driver in the first embodiment. The difference is that in this embodiment, the driver connection section 1 includes a main body connection seat 11 and a clamping shaft 13. The clamping shaft 13 is fixedly arranged on the main body connection seat 11 and the two are integrally formed. The driver connection section 1 is fixedly installed on the fixture 31 of the power device 3 through the clamping shaft 13. A connection hole is provided in the main body connection seat for fixing the adsorption magnet 9. The driver connection section is fixedly installed on the fixture of the power device by means of the clamping shaft. The clamping shaft can be a cylindrical rod or a polygonal handle. The power device can be a hand drill, a rechargeable drill, etc. Fixing the clamping shaft of the driver through the connection fixture is more convenient to use and easy to carry. When the clamping shaft is connected to the output shaft of the motor, it can be connected through a coupling.

[0048] The best embodiments of the present invention have been illustrated, and various changes or modifications made by those of ordinary skill in the art will not depart from the scope of the present invention.

Claims

1. A nut driver, characterized in that: The invention comprises a driving head, wherein the driving head comprises a driving connecting section (1) and a driving main section (2), wherein the driving connecting section (1) and the driving main section (2) are fixedly connected, and the driving connecting section (1) is connected to a power device (3). Driven by the driving connecting section (1), the driving main section (2) can rotate, and the interior of the driving main section (2) is hollow to form a receiving cavity (21). A driving friction pad (4) is arranged in the receiving cavity (21), and the inner diameter of the receiving cavity (21) is equal to or greater than the outer diameter of a nut. The nut is placed in the receiving cavity (21), the axis of the nut coincides with or is adjacent to the axis of the driver, and the end face of the nut and the end face of the driving friction pad (4) are frictionally driven.

2. A nut driver according to claim 1, characterized in that: The driver connecting section (1) comprises a main body connecting seat (11), a connecting hole (12) is provided at the center of the main body connecting seat (11), and the connecting hole (12) is connected to the output shaft of the power device (3).

3. A nut driver according to claim 1, characterized in that: The driver connecting section (1) is supported on a bearing seat (5) via a bearing, the bearing seat (5) is fixed on a bracket (6), and the driver connecting section (1) is in transmission cooperation with the power device (3).

4. A nut driver according to claim 2 or 3, characterized in that: The power device (3) is fixed on a bracket (6); an outer sleeve (7) is sleeved on the driver main section (2); the outer sleeve (7) is connected and fixed to the bracket (6); the upper end of the outer sleeve (7) is flush with the upper end of the driver main section (2) or the upper end of the outer sleeve (7) is higher than the upper end of the driver main section (2).

5. A nut driver according to claim 4, characterized in that: The outer sleeve (7) is detachably connected to the bracket (6); a flange flange (71) is formed at the lower end of the outer sleeve (7); corresponding mounting holes are formed on the flange flange (71) and the bracket (6) and are connected via fasteners.

6. A nut driver according to claim 1, characterized in that: The driver connecting section (1) comprises a main body connecting seat (11) and a clamping shaft (13), wherein the clamping shaft (13) is fixedly arranged on the main body connecting seat (11) and the two are integrally formed, and the driver connecting section (1) is fixedly mounted on a clamp (31) of a power device (3) via the clamping shaft (13).

7. A nut driver according to claim 5 or 6, characterized in that: A through hole (41) is provided at the center of the driving friction pad (4).

8. A nut driver according to claim 7, characterized in that: An introduction edge opening (22) is provided at the entrance of the accommodating cavity (21) of the driver main body section (2).

9. A nut driver according to claim 8, characterized in that: A protection tube (23) is arranged in the accommodating cavity (21), and the outer wall of the protection tube (23) is in contact with the inner wall of the accommodating cavity (21).

10. A nut driver according to claim 9, characterized in that: A regulating rod (8) capable of adjusting the threaded connection length between the nut and the screw rod is arranged below the driving friction pad (4).

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