Screw structure and dismounting tool

Abstract

The utility model discloses a screw structure and a dismounting tool, and relates to the technical field of screws. The screw rod is connected with the nut and provided with a shoulder part close to the nut and a tail part away from the nut, and threads are arranged on the outer surface of the tail part and used for being matched with the first threaded hole and the second threaded hole to lock the first component and the second component; in the locking state of the first component and the second component, the nut abuts against the surface, away from the second component, of the first component, and the tail of the nut extends to the side, away from the first threaded hole, of the second threaded hole. And the matching parts are arranged on the side, away from the screw rod, of the nut, at least two matching parts are evenly arranged around the axis of the nut at intervals, and the at least two matching parts are stressed and stretched at the same time to drive the screw rod to rotate and move in the axial direction of the second threaded hole, so that the tail part is matched with the second threaded hole to separate the first component from the second component. The two-section type structural design is adopted, and the technical problem that an existing screw is prone to being illegally detached is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of screws, in particular to a screw structure and a disassembly tool. Background Art

[0002] Screws are common fasteners used to connect or secure two or more components. Screws come in a variety of configurations. Screws with a standard cross-slotted cap can be easily screwed in and out using either a Phillips or slotted screwdriver, making them convenient. Screws are used to secure most products today, playing a key role in ensuring product safety and security.

[0003] However, the conventional screws currently used have a relatively simple structure and are easily disassembled by unauthorized or non-professional personnel. Utility Model Content

[0004] The main purpose of the utility model is to provide a screw structure, aiming to solve the problem that the existing screw structure is easily illegally disassembled.

[0005] To achieve the above-mentioned object, the present invention proposes a screw structure for connecting a first component and a second component, wherein the first component has a first threaded hole, and the second component has a second threaded hole, and the second threaded hole corresponds to the first threaded hole. The screw structure includes:

[0006] Nut;

[0007] a screw connected to the nut and having a shoulder proximal to the nut and a tail distal to the nut, wherein the tail is provided with threads on an outer surface thereof for engaging with the first threaded hole and the second threaded hole to lock the first and second members; wherein, in a locked state of the first and second members, the nut abuts against a surface of the first member facing away from the second member, and the tail extends to a side of the second threaded hole facing away from the first threaded hole; and

[0008] The mating portion is provided on the side of the nut facing away from the screw, and at least two of the mating portions are evenly spaced around the axis of the nut, wherein at least two of the mating portions are simultaneously stretched to drive the screw to rotate and move axially along the second threaded hole, so that the tail portion cooperates with the second threaded hole to separate the first component and the second component.

[0009] In one embodiment, the length of the shoulder portion is equal to the sum of the depths of the first threaded hole and the second threaded hole.

[0010] In one embodiment, the thread diameter of the tail portion is larger than the hole diameter of the second threaded hole.

[0011] In one embodiment, the matching portion is configured as an oblique hole.

[0012] In one embodiment, a groove is provided on a side of the nut facing away from the screw rod and at the axis of the nut, for placing a disassembly tool to generate torque.

[0013] The utility model also provides a disassembly tool, which is used to disassemble and assemble the above-mentioned screw structure. The disassembly tool includes a body and a traction hook arranged on the outer peripheral surface of the body, wherein the traction hook is used to cooperate with the matching portion to drive the tail to contact the second threaded hole.

[0014] In one embodiment, the pulling barb is integrally formed with the body.

[0015] In one embodiment, at least two traction barbs are evenly spaced around the axis of the body, and each traction barb is correspondingly provided with one matching portion.

[0016] In one embodiment, the traction barb includes a connecting rod and an extension portion arranged non-parallel to the connecting rod, wherein the connecting rod is connected to the outer peripheral surface of the body, and the extension portion extends toward the axial direction of the body.

[0017] In one embodiment, a cutting head is provided at one end of the body close to the pulling barb, and the cutting head is used to cooperate with the groove to drive the nut to rotate.

[0018] In the technical solution provided by the present utility model, a screw structure is used to connect a first component and a second component. The nut provided can facilitate the unlocking of the first component and the second component from the screw rod under the action of an external force, and can also provide support for the screw rod. The screw rod is the main part of the screw. The screw rod has a shoulder near the nut rod and a tail away from the nut rod. The outer surface of the tail rod is provided with a thread. The tail rod can be used to conveniently connect the first component and the second component together. When the first component and the second component are locked, the nut rod abuts the surface of the first component facing away from the second component. At this time, the tail rod fully extends to the side of the second threaded hole facing away from the first threaded hole, and the shoulder rod is located within the first threaded hole and the second threaded hole. In this way, when a conventional screwdriver or other tool acts on the screw structure, the entire screw structure will rotate on its own, reducing the possibility of disassembly, thereby effectively reducing the risk of the screw structure being illegally disassembled. In addition, the mating portion provided can be stretched when the screw structure needs to be disassembled. At this time, the screw rod rotates and moves along the axial direction of the second threaded hole, so that the tail rod can mate with the second threaded hole, thereby achieving separation of the first component and the second component. The technical solution proposed in the embodiment of the present utility model can effectively reduce the risk of the screw structure being illegally disassembled after the first component and the second component are connected by setting the screw rod as a non-threaded shoulder and a threaded tail, thereby effectively protecting the target product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of the screw structure provided by the utility model;

[0021] Figure 2 A schematic diagram of an embodiment of a screw structure provided by the present invention;

[0022] Figure 3 A schematic diagram of the three-dimensional structure of an embodiment of the disassembly tool provided by the utility model;

[0023] Figure 4 This is a schematic diagram of the state of an embodiment of the disassembly tool provided by the utility model.

[0024] Description of Figure Numbers:

[0025] 10. Screw structure; 11. Nut; 111. Fitting portion; 12. Screw rod; 121. Shoulder; 122. Tail; 20. First component; 30. Second component; 40. Disassembly tool; 41. Body; 42. Pulling barb; 421. Connecting rod; 422. Extension portion.

[0026] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] 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 embodiments described 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 making creative efforts shall fall within the scope of protection of the present invention.

[0028] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0030] With the development of increasingly high-value-added products, the security of their core components has become a critical issue. Traditional screws are easily removed by unauthorized personnel, increasing the risk of product theft or data leakage. Therefore, there is an urgent need for new anti-tampering and anti-theft screws and removal tools that can effectively prevent unauthorized removal while facilitating legitimate repair and maintenance.

[0031] In view of this, an embodiment of the present invention provides a screw structure and a disassembly tool. The screw structure adopts a two-section design, the shoulder is a non-threaded part, and the tail is a threaded part. When the screw is installed, the tail protrudes outside the structural assembly, so that when a conventional disassembly tool acts on the screw structure, the shoulder and the assembly have no rotational force, and the entire screw structure can only rotate in place, thereby solving the problem that the product is easily illegally disassembled.

[0032] In order to better understand the above technical solution, the above technical solution is described in detail below with reference to the accompanying drawings.

[0033] like Figure 1 、 Figure 2 As shown, an embodiment of the present invention provides a screw structure 10, which is used to connect a first component 20 and a second component 30. The first component 20 has a first threaded hole, and the second component 30 has a second threaded hole. The second threaded hole corresponds to the first threaded hole. The screw structure 10 includes:

[0034] Nut 11;

[0035] a screw rod 12 connected to the nut 11 and having a shoulder 121 proximal to the nut 11 and a tail 122 distal to the nut 11; the tail 122 having a threaded outer surface for engaging with the first and second threaded holes to securely fasten the first and second components 20 and 30; wherein, in the secured state of the first and second components 20 and 30, the nut 11 abuts against a surface of the first component 20 facing away from the second component 30, and the tail 122 extends to a side of the second threaded hole facing away from the first threaded hole; and

[0036] The mating portion 111 is provided on the side of the nut 11 away from the screw 12, and at least two mating portions 111 are evenly spaced around the axis of the nut 11, wherein at least two mating portions 111 are simultaneously stretched to drive the screw 12 to rotate and move axially along the second threaded hole, so that the tail portion 122 cooperates with the second threaded hole to separate the first component 20 and the second component 30.

[0037] In the technical solution adopted in this embodiment, a screw structure 10 is used to connect a first component 20 and a second component 30. The nut 11 provided can facilitate the unlocking of the first component 20 and the second component 30 from the screw 12 under the action of an external force, and can also provide support for the screw 12. The screw 12 is the main part of the screw. The screw 12 has a shoulder 121 close to the nut 11 and a tail 122 away from the nut 11. The outer surface of the tail 122 is provided with a thread. The tail 122 is provided to facilitate the connection between the first component 20 and the second component 30. When the first component 20 and the second component 30 are locked, the nut 11 abuts against the surface of the first component 20 facing away from the second component 30. At this time, the tail 122 is fully extended to the side of the second threaded hole facing away from the first threaded hole, and the shoulder 121 is located in the first threaded hole and the second threaded hole. In this way, when a conventional screwdriver or other tool acts on the screw structure 10, the entire screw structure 10 will rotate on its own, reducing the possibility of disassembly, thereby effectively reducing the risk of illegal disassembly of the screw structure 10. Furthermore, through the provision of the mating portion 111, when the screw structure 10 needs to be disassembled, the mating portion 111 is subjected to tension, at which point the screw 12 rotates and moves along the axial direction of the second threaded hole, allowing the tail portion 122 to mate with the second threaded hole, thereby enabling separation of the first component 20 and the second component 30. The technical solution proposed in this embodiment of the utility model, by providing the screw 12 with an unthreaded shoulder 121 and a threaded tail portion 122, effectively reduces the risk of unauthorized disassembly of the screw structure 10 after it is connected to the first component 20 and the second component 30, thereby effectively protecting the target product.

[0038] Specifically, the screw structure 10 includes a nut 11 , a screw rod 12 and a fitting portion 111 .

[0039] The nut 11 can be made of stainless steel, aluminum alloy, etc., and can provide support for the screw 12. The shape and size of the nut 11 can be designed accordingly according to the actual requirements of the surface of the first component 20. It can be a hexagonal nut, a round nut, or a square nut, which is not limited here.

[0040] The screw 12 is fixedly connected to the nut 11. The two-stage structural design makes it difficult for conventional tools such as screwdrivers to effectively rotate it, thereby reducing the possibility of illegal disassembly of the screw structure 10. It is understood that the screw 12 has a shoulder 121 close to the nut 11 and a tail 122 away from the nut 11. The shoulder 121 is a non-threaded portion and the tail 122 is a threaded portion. The tail 122 can be screwed into the first threaded hole from the side facing away from the second threaded hole until it is screwed out from the side of the second threaded hole facing away from the first threaded hole, thereby securing the first component 20 and the second component 30. In this embodiment, when the first component 20 and the second component 30 are locked, the shoulder 121 is located within the first threaded hole and the second threaded hole, and there is a gap between the shoulder 121 and the first threaded hole and the second threaded hole. In this way, when a conventional screwdriver or other tool acts on the nut 11, there is no rotational force on the shoulder 121 and the first component 20 and the second component 30, and the entire screw assembly rotates on its own, thereby reducing the risk of illegal disassembly.

[0041] The mating portion 111 is used to separate the first component 20 and the second component 30. It is understandable that the tail portion 122 can be stretched to contact the second threaded hole by the mating portion 111, so that the screw structure 10 can be removed along the hole under the action of the rotational torque. In this embodiment, the mating portion 111 can be set on the side of the nut 11 away from the screw 12, so that it can be easily stretched toward the side of the first component 20 facing away from the second component 30. The mating portion 111 can be set as two or more, and at least two mating portions 111 must be simultaneously subjected to external force to enable the screw structure 10 to move stably. In this way, it can ensure that the screw structure 10 is disassembled by the matching special disassembly tool, reducing the possibility of illegal disassembly.

[0042] Further, refer to Figure 2 In one embodiment of the present invention, the length of the shoulder 121 is equal to the sum of the depths of the first threaded hole and the second threaded hole.

[0043] In the technical solution adopted in this embodiment, this arrangement can effectively reduce the loosening of the fixing of the first component 20 and the second component 30. It can be understood that when the shoulder 121 is completely within the first threaded hole and the second threaded hole, the nut 11 can abut against the surface of the first component 20, and the tail 122 can extend to the side of the second threaded hole away from the first threaded hole. The first component 20 and the second component 30 are locked by the threaded engagement between the nut 11 and the tail 122.

[0044] Further, refer to Figure 2 In one embodiment of the present invention, the thread diameter of the tail portion 122 is larger than the aperture of the second threaded hole.

[0045] In the technical solution adopted in this embodiment, the thread diameter of the tail portion 122 is set to be larger than the aperture of the second threaded hole. In this way, when the first component 20 and the second component 30 are locked, the thread diameter of the tail portion 122 can be closely attached to the side of the second component 30 facing away from the first component 20, thereby improving the reliability of the connection between the first component 20 and the second component 30.

[0046] Further, refer to Figure 1 In one embodiment of the present invention, the matching portion 111 is configured as an oblique hole.

[0047] In the technical solution adopted in this embodiment, the mating portion 111 can be set as an inclined hole. By so setting, when disassembling the screw structure 10, the matching disassembly tool can be conveniently inserted into the inclined hole, and the screw structure 10 can be effectively forced to move toward the side of the first component 20 away from the second component 30.

[0048] Further, refer to Figure 1 、 Figure 2 In one embodiment of the present invention, a groove is provided on the side of the nut 11 away from the screw rod 12 and at the axis of the nut 11 for placing a disassembly tool to generate torque.

[0049] In the technical solution adopted in this embodiment, the provided groove can facilitate the engagement of a matching disassembly tool, so that the disassembly tool can provide sufficient torque to tighten or loosen the screw structure 10 .

[0050] The present invention also provides a disassembly tool 40, which is used to disassemble and assemble the screw structure 10 of the above-mentioned embodiments. The disassembly tool 40 includes a main body 41 and a traction hook 42 arranged on the outer peripheral surface of the main body 41, wherein the traction hook 42 is used to cooperate with the matching portion 111 to drive the tail 122 to contact the second threaded hole.

[0051] In the technical solution adopted in this embodiment, the body 41 can be mounted on a manual screwdriver or an electric screwdriver handle. The traction barb 42 is provided on the body 41 and is used to cooperate with the mating portion 111, so that the screw structure 10 as a whole can rotate under the action of an external force and can move along the axial direction of the second threaded hole until the tail portion 122 can cooperate with the second threaded hole, thereby allowing the screw structure 10 to be removed along the hole position under the action of rotational torque. It is understood that the traction barb 42 has a certain elasticity. Therefore, when the body 41 moves toward the screw structure 10, the traction barb 42 can abut against the outer surface of the nut 11 and bend until the bent portion of the traction barb 42 hooks onto the mating portion 111 and resets, thereby facilitating the stretching of the screw structure 10. Of course, to facilitate the hooking and engagement of the bent portion of the traction barb 42 with the mating portion 111, a positioning groove can also be provided on the outer surface of the nut 11 so that the traction barb 42 can slide along the positioning groove into the mating portion 111. The bending angle of the traction barb 42 can also be set according to the curvature of the outer surface of the nut 11 .

[0052] Further, refer to Figure 3 、 Figure 4 In one embodiment of the present invention, the traction barb 42 and the body 41 are integrally formed.

[0053] In the technical solution adopted in this embodiment, the traction barb 42 can be integrally formed with the body 41. This arrangement reduces the number of connection points between components, allowing the traction barb 42 to follow the body 41 in the event of rotation due to external force, thereby reducing the number of components and the complexity of the structure. Furthermore, the integrated structure is generally stronger, providing greater stability and durability, and enhancing the reliability of the removal tool 40.

[0054] Further, refer to Figure 3 、 Figure 4 In one embodiment of the present invention, at least two traction barbs 42 are evenly spaced around the axis of the body 41 , and each traction barb 42 is correspondingly provided with a matching portion 111 .

[0055] In the technical solution adopted in this embodiment, by such an arrangement, a more stable traction force can be provided, reducing the possibility of the screw structure 10 being offset during the disassembly process. At the same time, the cooperation of at least two traction barbs 42 can be more evenly distributed around the component, balancing the force and reducing local stress concentration. Moreover, a matching portion 111 is provided corresponding to each traction barb 42, which can ensure that the cooperation between the disassembly tool 40 and the screw structure 10 is more precise, and improve the controllability and accuracy of the disassembly process. In addition, the one-to-one configuration can provide better stability, reduce the sliding or dislocation that may occur during the disassembly process, and ensure the smoothness of the operation. The number of traction barbs 42 can be set to two or more. Preferably, the number of traction barbs 42 is set to two, so that the disassembly tool 40 can be more flexible and convenient for the traction barbs 42 to be hooked into the matching portion 111.

[0056] Further, refer to Figure 3 、 Figure 4 In one embodiment of the present invention, the traction hook 42 includes a connecting rod 421 and an extension portion 422 arranged non-parallel to the connecting rod 421, wherein the connecting rod 421 is connected to the outer peripheral surface of the body 41, and the extension portion 422 extends toward the axial direction of the body 41.

[0057] In the technical solution adopted in this embodiment, the traction barb 42 can include two parts: a connecting rod 421 and an extension portion 422. It can be understood that the connecting rod 421 is connected to the outer circumference of the body 41, while the extension portion 422 extends from the end of the connecting rod 421 away from the body 41 toward the axial center of the body 41. When the end of the body 41 abuts the top of the nut 11, it can hook into the mating portion 111, allowing the screw structure 10 to effectively rotate under force.

[0058] Further, refer to Figure 3 、 Figure 4 In one embodiment of the present invention, a cutter head is provided at one end of the body 41 close to the traction barb 42 , and the cutter head is used to cooperate with the groove to drive the nut 11 to rotate.

[0059] In the technical solution adopted in this embodiment, the provided cutter head can facilitate the removal tool 40 to be forced to drive the screw structure 10 to rotate. The cutter head can be set to a cross shape, a straight shape, or a plum blossom shape, which is not limited here.

[0060] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A screw structure, characterized in that: The screw structure is used to connect a first component and a second component, the first component has a first threaded hole, the second component has a second threaded hole, and the second threaded hole corresponds to the first threaded hole. The screw structure includes: Nut; a screw connected to the nut and having a shoulder proximal to the nut and a tail distal to the nut, wherein the tail is provided with threads on an outer surface thereof for engaging with the first threaded hole and the second threaded hole to lock the first and second members; wherein, in a locked state of the first and second members, the nut abuts against a surface of the first member facing away from the second member, and the tail extends to a side of the second threaded hole facing away from the first threaded hole; and The mating portion is provided on the side of the nut facing away from the screw, and at least two of the mating portions are evenly spaced around the axis of the nut, wherein at least two of the mating portions are simultaneously stretched to drive the screw to rotate and move axially along the second threaded hole, so that the tail portion cooperates with the second threaded hole to separate the first component and the second component.

2. The screw structure according to claim 1, wherein: The length of the shoulder portion is equal to the sum of the depths of the first threaded hole and the second threaded hole.

3. The screw structure according to claim 1, wherein: The thread diameter of the tail portion is larger than the aperture of the second threaded hole.

4. The screw structure according to claim 1, wherein: The matching portion is configured as an oblique hole.

5. The screw structure according to claim 1, wherein: A groove is provided on the side of the nut away from the screw rod and at the axis of the nut, for placing a disassembly tool to generate torque.

6. A disassembly tool, characterized in that: The disassembly tool is used to disassemble and assemble the screw structure according to any one of claims 1 to 5, and the disassembly tool includes a main body and a traction barb arranged on the outer peripheral surface of the main body, wherein the traction barb is used to cooperate with the mating portion to drive the tail portion to contact the second threaded hole.

7. The disassembly tool according to claim 6, wherein: The traction barb and the body are integrally formed.

8. The disassembly tool according to claim 7, wherein: At least two traction barbs are evenly spaced around the axis of the body, and each traction barb is correspondingly provided with a matching portion.

9. The disassembly tool according to claim 8, wherein: The traction barb includes a connecting rod and an extension portion arranged non-parallel to the connecting rod, wherein the connecting rod is connected to the outer peripheral surface of the body, and the extension portion extends toward the axial center direction of the body.

10. The disassembly tool according to claim 6, wherein: A cutter head is provided at one end of the body close to the traction barb, and the cutter head is used to cooperate with the groove to drive the nut to rotate.

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