Nut screwing sleeve

Abstract

The utility model discloses a nut screwing sleeve which comprises a sleeve body, a driving part matched with a nut is arranged on the sleeve body, a blocking body is arranged in the driving part of the sleeve body, a through hole for a corresponding screw to pass through is formed in the center of the blocking body, and a certain distance is reserved between the blocking body and a port of the sleeve body. The accuracy and convenience of nut screwing operation are crucial, the developed nut screwing sleeve brings a brand-new solution, the sleeve is designed in a lengthened mode, due to the characteristic, the sleeve can easily allow a screw to enter a driving part of a sleeve body, the problem that a short sleeve is poor in adaptability to the length of the screw is effectively solved, and the nut screwing sleeve is convenient to use. The use range is greatly widened, the key point is that the blocking body arranged inside plays a role in accurate positioning, the nut is appropriately prevented from excessively entering the driving part, and the nut is made to be close to the end and kept upright and not inclined.

Description

Technical Field

[0001] The utility model relates to the technical field of nut assembly, in particular to a nut screwing sleeve. Background Art

[0002] In the field of mechanical operation, the socket wrench is an indispensable tool, and the socket part is the key. The socket is put on the wrench with its unique cylindrical shape, which makes it convenient to tighten or loosen bolts and nuts in narrow or recessed places.

[0003] However, as far as the existing sleeve technology is concerned, there are some problems that need to be solved urgently, which have caused a lot of trouble to the staff during the actual operation:

[0004] The short sleeve with magnetic attraction has a center hole in the center of the sleeve drive part and a magnet embedded in it, which can easily absorb the nut by magnetic attraction. It seems convenient, but when actually tightening the nut, due to its short drive part, the screw is difficult to enter the sleeve. When encountering a long bolt, it will hit the bottom of the sleeve and cannot go deeper, causing the nut to not be screwed to the bottom and cannot be tightened firmly. This will cause hidden dangers in many operations that require high tightness.

[0005] The situation with the extended socket without magnetic attraction is not optimistic either. When putting the nut into it, the nut will slide in the driving part due to the excessive length of the socket, and then slip and tilt. Therefore, when using it, you have to screw the nut onto the bolt first and then tighten it with the socket. The operation is extremely inconvenient and greatly reduces work efficiency. This inconvenience is even more prominent in time-sensitive work scenarios.

[0006] These problems remind us that it is urgent to improve the socket design. Perhaps we can explore a new socket structure. For example, we can combine the advantages of long and short sockets to create a socket with adjustable length, which can adapt to long bolts and prevent nuts from sliding. At the same time, the magnetic suction function can also be optimized so that it can effectively absorb nuts without hindering the smooth entry of the screw. If these improvements can be achieved, I believe that the socket wrench can play a better role in mechanical operations, improve work efficiency and quality, and better meet various operational needs. Summary of the invention

[0007] The technical problem to be solved by the present utility model is directed to the above-mentioned current situation of the prior art, and provides a nut - wrenching sleeve. In the mechanical field, the accuracy and convenience of the operation of wrenching nuts are crucial. The nut - wrenching sleeve we developed brings a new solution. This sleeve is of an extended design, and this feature enables it to easily allow the screw to enter the driving part of the sleeve body, effectively solving the problem of poor adaptability of the short sleeve to the screw length, greatly broadening the scope of use. Particularly crucial is the internal stop body, which plays an accurate positioning role, just right to block the nut from excessively entering the driving part, making the nut close to the end and keeping it straight without skew. In this way, the nut and the screw can be quickly aligned to achieve rapid screwing on of the bolt, and subsequently, the screw can continue to penetrate through the through - hole of the stop body to ensure that the nut is firmly tightened. In addition, this sleeve has a low cost, and it combines high efficiency, accuracy, and economy, bringing great convenience to mechanical assembly, maintenance, and other related work.

[0008] The technical solution adopted by the present utility model to solve the above - mentioned technical problem is as follows:

[0009] A nut - wrenching sleeve, comprising a sleeve body, a driving part adapted to the nut is provided on the sleeve body, a stop body is arranged in the driving part of the sleeve body, a through - hole for the corresponding screw to pass through is provided at the center of the stop body, and the stop body is at a certain distance from the port of the sleeve body.

[0010] To optimize the above - mentioned technical solution, the measures taken also include:

[0011] An adsorption magnet is arranged on the above - mentioned stop body.

[0012] Fixing holes are provided on the above - mentioned stop body, and the adsorption magnet is embedded in the fixing holes.

[0013] Three fixing holes are evenly distributed on the above - mentioned stop body, the included angle between two adjacent fixing holes is 120°, and adsorption magnets are respectively embedded in the three fixing holes.

[0014] The above - mentioned adsorption magnet is attached to the surface of the stop body.

[0015] The above - mentioned stop body has magnetism and can adsorb the nut.

[0016] The above - mentioned stop body is fixed in the driving part of the sleeve body by interference fit.

[0017] Radial holes are radially opened on the outer wall of the above - mentioned sleeve body, and the outer circumference of the stop body is aligned with the radial holes.

[0018] The above - mentioned radial holes are threaded holes, a set screw is screwed in the radial holes, and the inner end of the set screw abuts against the stop body.

[0019] The above - mentioned stop body and the sleeve body are integrally formed, and a retaining platform is formed between the stop body and the driving part of the sleeve body.

[0020] The above-mentioned adsorption magnet is sleeved on the outer periphery of the sleeve body.

[0021] A nut wrenching sleeve of the present utility model includes a sleeve body. A driving part adapted to the nut is provided on the sleeve body. A stopper is arranged inside the driving part of the sleeve body. A through hole for the corresponding screw to pass through is provided at the center of the stopper. The stopper is at a certain distance from the port of the sleeve body. In the mechanical field, the precision and convenience of the operation of wrenching nuts are crucial. The nut wrenching sleeve developed by us brings a new solution. This sleeve is of an extended design. This feature enables it to easily allow the screw to enter the driving part of the sleeve body, effectively solving the problem of poor adaptability of the short sleeve to the screw length, greatly broadening the scope of use. Particularly crucial is the internally arranged stopper, which plays an accurate positioning role, just right to block the nut from entering the driving part excessively, making the nut close to the end and keep upright without skew. In this way, the nut and the screw can be quickly aligned to achieve rapid screwing of the bolt, and subsequently the screw can continue to penetrate through the through hole of the stopper to ensure that the nut is firmly tightened. In addition, this sleeve has a low cost. It combines high efficiency, precision, and economy, bringing great convenience to mechanical assembly, maintenance and other related work. Description of the Drawings

[0022] Figure 1 is the three-dimensional structural schematic diagram of Embodiment 1 of the present utility model;

[0023] Figure 2 is the exploded view of Embodiment 1 of the present utility model;

[0024] Figure 3 is the cross-sectional view of Embodiment 1 of the present utility model;

[0025] Figure 4 is the exploded view of Embodiment 2 of the present utility model;

[0026] Figure 5 is the cross-sectional view of Embodiment 2 of the present utility model;

[0027] Figure 6 is the cross-sectional view of another setting mode of Embodiment 2 of the present utility model;

[0028] Figure 7 is the cross-sectional view of Embodiment 3 of the present utility model;

[0029] Figure 8 is the cross-sectional view of another setting mode of Embodiment 3 of the present utility model;

[0030] Figure 9 is the cross-sectional view of Embodiment 4 of the present utility model. Detailed Embodiment

[0031] The embodiments of the present utility model will be further described in detail below in conjunction with the accompanying drawings.

[0032] Figures 1 to 9 It is a schematic structural diagram of the present utility model.

[0033] The reference numerals therein are: sleeve body 1, driving part 11, radial hole 12, setscrew 13, stopper 2, through hole 21, fixing hole 22, adsorption magnet 3. Embodiment

[0034] Such as Figures 1 to 3As shown in the figure, a nut - wrenching sleeve includes a sleeve body 1. A driving part 11 adapted to the nut is provided on the sleeve body 1. The driving part 11 allows the screw to enter. Shape adaptation: The driving part 11 on the sleeve body 1 is designed to be adapted to the outer shape of the nut. Common nut shapes include hexagon, square, etc., and the driving part 11 has corresponding shapes. For example, for a hexagon nut, the driving part 11 is a hexagonal hole. In this way, when the driving part 11 of the sleeve is aligned with the nut and the nut is sleeved, the sleeve can be tightly combined with the nut, ensuring that when the sleeve is rotated, the torque can be effectively transmitted to the nut to realize the rotation of the nut. Screw pass - through property: The driving part 11 allows the screw to enter it because in the actual operation of wrenching the nut, the screw passes through the nut. This design ensures that the sleeve will not be blocked by the screw during the process of wrenching the nut, enabling the operation to proceed smoothly. A stopper 2 is arranged inside the driving part 11 of the sleeve body 1. A through - hole 21 for the corresponding screw to pass through is provided at the center of the stopper 2. The stopper 2 is at a certain distance from the port of the sleeve body 1, and this distance is approximately the thickness of a nut. Principle of action of the stopper, positioning and support: The stopper 2 is located inside the driving part 11 and is at a certain distance from the port of the sleeve body 1. When the sleeve is sleeved on the nut, the stopper 2 can play a certain role in positioning and supporting the nut, playing an accurate positioning role, just right to block the nut from entering the driving part excessively, making the nut close to the end and keeping it upright without skew. In this way, when assembling, the nut and the screw can be quickly aligned. Without the stopper, during the process of loosening the nut, the nut may fall into the inside of the sleeve due to gravity or other external forces, resulting in inconvenient operation. The stopper 2 can prevent this situation from occurring, keeping the nut in a proper position inside the sleeve, facilitating the tightening or loosening operation. Screw pass - through mechanism: A through - hole 21 for the corresponding screw to pass through is provided at the center of the stopper 2. During operation, the screw can pass through this through - hole, enabling the sleeve to move along the axial direction of the screw to adapt to different operation requirements. For example, when it is necessary to tighten the nut, the sleeve can move downward along the screw until the driving part 11 is in full contact with the nut and starts to transmit torque. During the whole process, the through - hole 21 ensures that the screw will not interfere with the stopper 2, making the operation of the sleeve more flexible. Through the above - mentioned adaptation connection between the sleeve and the nut and the action of the stopper, when using a wrench or other power tools to rotate the sleeve, the torque is transmitted to the nut through the driving part 11 of the sleeve, realizing the tightening or loosening operation of the nut on the screw.

[0035] An adsorption magnet 3 is arranged on the stopper 2. The adsorption magnet 3 can generate an adsorption force on the nut. The fixing hole 22 plays a role in fixing and protecting the adsorption magnet 3. During the use of the sleeve, it may be affected by various external forces, such as collision, vibration, etc. The fixing hole 22 can prevent the magnet from falling off or being damaged accidentally due to these external forces.

[0036] There are three fixing holes 22 evenly distributed on the stopper 2, and the included angle between two adjacent fixing holes 22 is 120°. Three adsorption magnets 3 are respectively embedded in the three fixing holes 22. Omnidirectional adsorption: The three adsorption magnets 3 are evenly distributed on the stopper 2 and can provide omnidirectional adsorption force for the nut. No matter from which direction the nut approaches the sleeve, it will be subjected to the adsorption action of at least one magnet. For example, in a complex operating environment, when the nut is in an inclined state due to equipment vibration or non-standard previous installation, the adsorption forces in three directions can work together to quickly straighten the nut and stably adsorb it on the stopper 2, ensuring the correct positioning of the nut in the sleeve. Balanced positioning effect: The 120° included angle between two adjacent fixing holes 22 ensures the balance of the adsorption force in the circumferential direction. This balance is very important for maintaining the central positioning of the nut in the sleeve. When the sleeve is sleeved on the nut, the evenly distributed adsorption force can prevent the nut from shifting in the driving part 11.

[0037] Radial holes 12 are radially formed on the outer wall of the sleeve body 1, and the outer circumference of the stopper 2 is aligned with the radial holes 12. The position of the stopper 2 can be observed through the radial holes 12, and the stopper 2 can be fixed by means such as welding from the radial holes 12.

[0038] The radial hole 12 is a threaded hole, and the set screw 13 is screwed into the radial hole 12. The inner end of the set screw 13 abuts against the stopper 2. Precise fixing of the stopper position: The set screw 13 precisely fixes the stopper 2 at the set position within the sleeve body 1 through cooperation with the radial threaded hole 12. During the operation, no matter what external forces the sleeve is subjected to, such as vibration, collision or torque reaction force, the stopper 2 can maintain a stable position. This is crucial for ensuring the stable operation of other components (such as adsorption magnets, if any) on the stopper 2. For example, in an environment where a machining equipment starts and stops frequently and generates vibration, the set screw 13 can prevent the stopper 2 from shifting, thereby ensuring the accurate adsorption and positioning of the nut in the sleeve. Positioning adjustment function: By rotating the set screw 13, the position of the stopper 2 can be finely adjusted. This fine adjustment ability is very useful in some special cases. For example, when it is necessary to adapt to nuts of different thicknesses or there are slight deviations in the cooperation between the stopper 2 and the nut, the operator can adjust the position of the stopper 2 by tightening or loosening the set screw 13 according to the actual situation, so that the distance and relative position between the stopper 2 and the nut reach the best state to achieve more precise operation.

[0039] The stopper 2 has magnetism and can adsorb the nut, eliminating the need for additional adsorption magnets and reducing costs.

[0040] The stopper 2 is fixed in the driving part 11 of the sleeve body 1 by interference fit, simplifying the installation method.

[0041] Principle and usage method of the utility model:

[0042] Operation of tightening the nut

[0043] 1. Approach the nut: Hold the socket wrench by hand and align the driving part of the socket wrench body with the nut to be tightened. Since there is an adsorption magnet on the stopper, during the process of the socket wrench approaching the nut, the nut will be attracted by the adsorption magnet within a certain distance. When feeling the adsorption force, slowly adjust the position of the socket wrench to completely align the driving part with the nut. If the nut is in an inclined state, the adsorption force of the adsorption magnet can be used to straighten the nut to ensure good cooperation between the nut and the driving part;

[0044] 2. Put on the nut: Continue to move the socket wrench so that the nut completely enters the driving part and contacts the stopper. At this time, the adsorption magnet will tightly adsorb the nut to prevent it from accidentally falling off or shifting during the operation;

[0045] 3. Apply torque: Connect a suitable tool (such as a wrench, a hand drill, a power tool, etc.) to the socket wrench, and then start applying torque. The torque is transmitted through the socket wrench body to the driving part, and then acts on the nut by the driving part, so that the nut starts to be tightened on the screw. The screw will pass through the through hole on the stopper 2 and enter the socket wrench, which will not affect the assembly;

[0046] 4. Complete tightening: When the nut is tightened to the appropriate degree (it can be controlled by a torque wrench according to specific operation requirements, or judged according to experience), stop applying torque, and then slowly remove the socket wrench.

[0047] Operation of loosening the nut:

[0048] 1. Approach the nut: Similar to tightening the nut, hold the socket wrench by hand and align the driving part with the nut to be loosened. Due to the existence of the adsorption magnet, the nut will be adsorbed to the stopper to ensure accurate alignment between the socket wrench and the nut;

[0049] 2. Start loosening: Connect a suitable tool to the socket wrench and apply reverse torque to make the nut start to loosen on the screw. In the initial stage of loosening, it may be necessary to slightly increase the torque to overcome the friction between the nut and the screw and possible rusting. During the loosening process, the adsorption magnet will continuously adsorb the nut to prevent it from falling into the socket wrench;

[0050] 3. Unscrew the nut: Continue to apply reverse torque until the nut is completely unscrewed from the screw. At this time, the nut is still adsorbed on the stopper, and the socket wrench and the nut can be moved away from the operation area together;

[0051] 4. Remove the nut: Move the socket wrench to a suitable position (such as the tool placement area), and the nut can be removed from the stopper by gently shaking the socket wrench or using a tool to complete the operation of loosening the nut. Embodiment

[0052] As Figures 4 to 6 shown, the nut - tightening sleeve of this embodiment is basically the same as that of the first embodiment. The difference is that in this embodiment, the adsorption magnet 3 is an annular magnet. As Figure 5 shown, the adsorption magnet 3 fits on the inner surface of the stopper 2. The adsorption magnet 3 is pasted on the surface of the stopper 2 using an adhesive. In order to further prevent the adsorption magnet from falling off or shifting, a sleeve is provided at the bottom of the adsorption magnet and the sleeve body 1. As Figure 6 shown, the adsorption magnet 3 fits on the outer surface of the stopper 2. The adsorption magnet 3 is pasted on the surface of the stopper 2 using an adhesive. When the adsorption magnet 3 is an annular magnet and fits on the inner or outer surface of the stopper 2, the annular magnet will generate a magnetic field around it. Since the magnet has magnetism, its magnetic field can generate an attractive force on ferromagnetic substances. In the operation scenario of tightening nuts, nuts are usually made of metal and mostly ferromagnetic. So when the sleeve approaches the nut, the nut will enter the magnetic field range generated by the adsorption magnet 3. According to the characteristics of the magnetic field, the magnetic field intensity is relatively strong in the area close to the magnet surface. Therefore, when the nut approaches the stopper 2 with the adsorption magnet 3 attached, it will be subjected to a strong adsorption force, enabling the nut to be quickly and accurately attracted to the stopper 2, facilitating the subsequent accurate cooperation and operation between the sleeve and the nut. Embodiment

[0053] As Figures 7 to 8 shown, the nut - tightening sleeve of this embodiment is basically the same as that of the first embodiment. The difference is that the stopper 2 and the sleeve body 1 are integrally formed. When the stopper 2 and the sleeve body 1 are integrally formed, it means that they are processed as a whole part during the manufacturing process. This integrated structure makes there be no connection gap or weak connection point between the stopper 2 and the sleeve body 1, thus greatly enhancing the structural strength of the whole part. A retaining platform is formed between the stopper 2 and the driving part 11 of the sleeve body 1. The adsorption magnet 3 is pasted on the surface of the stopper 2 using an adhesive. The retaining platform is actually an annular protrusion formed inside the sleeve body. It cooperates with the stopper 2 to effectively divide and define the space inside the sleeve. The retaining platform can serve as an additional support structure to share part of the pressure and torque transmitted by the nut. As Figure 7 shown, the outer diameter of the nut - tightening sleeve is consistent up and down, and the structural strength is high. As Figure 8 shown, the outer diameter of the driving part 11 is larger than the outer diameter of the sleeve body 1. In this way, it is formed by stamping to make the driving part 11 form a shape adapted to the nut, and the cost is low. Embodiment

[0054] As Figure 9As shown, the nut - tightening sleeve of this embodiment is basically the same in structure as the nut - tightening sleeve in Embodiment 1. The difference is that the adsorption magnet 3 is sleeved on the outer periphery of the sleeve body 1, reducing the manufacturing difficulty.

[0055] The best embodiment of the present utility model has 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 utility model.

Claims

1. A nut-tightening sleeve, comprising a sleeve body (1), wherein the sleeve body (1) is provided with a driving portion (11) adapted to the nut, wherein the driving portion (11) can allow a screw to enter, and wherein: A stopper (2) is arranged inside the driving part (11) of the sleeve body (1), a through hole (21) for a corresponding screw to pass through is arranged at the center of the stopper (2), and the stopper (2) is at a certain distance from the port of the sleeve body (1).

2. A nut tightening sleeve according to claim 1, characterized in that: An adsorption magnet (3) is provided on the blocking body (2).

3. A nut tightening sleeve according to claim 2, characterized in that: The blocking body (2) is provided with a fixing hole (22), and the adsorption magnet (3) is embedded in the fixing hole (22).

4. A nut tightening sleeve according to claim 3, characterized in that: Three fixing holes (22) are evenly distributed on the blocking body (2), the angle between two adjacent fixing holes (22) is 120°, and the three fixing holes (22) are respectively embedded with the adsorption magnets (3).

5. A nut tightening sleeve according to claim 2, characterized in that: The adsorption magnet (3) is attached to the surface of the blocking body (2).

6. A nut tightening sleeve according to claim 1, characterized in that: The blocking body (2) has magnetism and can absorb the nut.

7. A nut tightening sleeve according to any one of claims 4 to 6, characterized in that: The blocking body (2) is interference fixed in the driving portion (11) of the sleeve body (1).

8. A nut tightening sleeve according to any one of claims 4 to 6, characterized in that: A radial hole (12) is radially opened on the outer wall of the sleeve body (1), and the outer periphery of the blocking body (2) is aligned with the radial hole (12).

9. A nut tightening sleeve according to claim 8, characterized in that: The radial hole (12) is a threaded hole, and the top screw (13) is screwed into the radial hole (12), and the inner end of the top screw (13) abuts against the blocking body (2).

10. A nut tightening sleeve according to claim 2, characterized in that: The stopper body (2) is integrally formed with the sleeve body (1), and a stopper is formed between the stopper body (2) and the driving portion (11) of the sleeve body (1).

Images