Anti-disassembly screw

Abstract

The utility model relates to the technical field of screws, in particular to an anti-disassembly screw. According to the technical scheme, the anti-disassembly assembly comprises a butt-joint inserting block, a butt-joint inserting groove, a cutter groove and a screwdriver, the butt-joint inserting groove is formed in the bottom of a screw head and located over the butt-joint inserting block, the butt-joint inserting block is connected with the butt-joint inserting groove in an inserted mode, the cutter groove is formed in the top of the screw head, and the screwdriver is located in the cutter groove. A strong magnet is fixedly installed in the screwdriver, and the end of the screwdriver is aligned with the tool groove. The weak magnet at the end of the screw rod attracts the butt-joint insertion block, so that the butt-joint insertion block is separated from the butt-joint insertion groove, the screw rod cannot be driven to rotate by rotating the screw head, and the anti-disassembly effect is achieved; during dismounting, the butt joint insertion block is attracted through the strong magnet in the screwdriver, the butt joint insertion block is inserted into the butt joint insertion groove, at the moment, the screw rod can be driven to rotate by rotating the screw head, and therefore the screw rod is dismounted.

Description

Technical Field

[0001] The utility model relates to the technical field of screws, in particular to an anti-disassembly screw. Background Art

[0002] A screw is a common fastener, usually made of metal and having spiral threads. It has a wide range of applications in various fields. A screw generally consists of a head and a screw rod. When using a screw, it is necessary to select a suitable specification and material according to the specific application scenario to ensure the firmness and reliability of the connection. The slots on the screw head have various shapes, including a flat slot, a Phillips slot, a cross slot, and a square slot, etc.

[0003] In the prior art, by using a screwdriver that is the same as the slot on the screw head, the screwdriver is used to drive the screw to rotate to screw the screw. However, this kind of screw can be rotated and disassembled as long as a screwdriver is used. The screw slot is exposed outside and is easy to be opened by others, resulting in low safety. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an anti-disassembly screw for the problem of low safety of screws in the background art.

[0005] The technical solution of the utility model: An anti-disassembly screw includes a screw rod, the top end of the screw rod is rotatably connected with a screw head, and a protective sleeve is fixedly installed at the bottom of the screw head;

[0006] An anti-disassembly component includes a docking plug, a docking slot, a tool slot, and a screwdriver. A docking slot is opened at the bottom of the screw head, the docking slot is directly above the docking plug, the docking plug is inserted into the docking slot, a tool slot is opened at the top of the screw head, a strong magnet is fixedly installed inside the screwdriver, and the end of the screwdriver is aligned with the tool slot;

[0007] The docking plug slides up and down inside the screw rod.

[0008] Optionally, the docking plug is divided into upper and lower parts. The upper half of the docking plug adopts a structure of two intersecting triangular prisms, and the lower half of the docking plug adopts a cross-shaped structure.

[0009] Optionally, the shape of the docking slot matches the shape of the docking plug. The screw head is made of one of an iron cap, a cobalt cap, or a nickel cap, and a weak magnet is fixedly installed at one end of the screw rod facing the docking plug.

[0010] Optionally, a fixing cylinder is fixedly installed at the top of the screw rod, and a sliding groove is opened at the top of the screw rod and at the center of the fixing cylinder. The docking plug slides up and down in the sliding groove.

[0011] Optionally, a positioning component is provided on the inner wall of the protective sleeve. The positioning component includes a docking slot and a docking ball. A docking slot is formed on the inner wall of the protective sleeve, and a docking ball is fixedly installed on the outer arc surface of the fixed cylinder. The docking slot is engaged with the docking ball.

[0012] Optionally, the docking ball adopts a hemispherical spring sheet structure, and the protective sleeve is sleeved on the outer wall of the fixed cylinder.

[0013] Optionally, the knife groove is one of a straight groove, a plum blossom groove, a cross groove or a square groove, and the shape of the end of the screwdriver matches the shape of the knife groove.

[0014] Compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0015] In the present utility model, the weak magnet at the end of the screw rod attracts the docking plug, so that the docking plug is separated from the docking slot, and rotating the screw head cannot drive the screw rod to rotate, achieving the effect of anti-disassembly.

[0016] Furthermore, during disassembly, the strong magnet inside the screwdriver attracts the docking plug, so that the docking plug is inserted into the docking slot. At this time, rotating the screw head can drive the screw rod to rotate, thereby disassembling the screw rod.

[0017] Furthermore, after the docking ball is inserted into the docking slot, the resistance to rotating the protective sleeve again increases, to prompt the user that the docking plug is aligned with the docking slot, facilitating the insertion of the docking plug into the docking slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structural schematic diagram of an embodiment of the present utility model is given;

[0019] Figure 2 The structural schematic diagram of the screw head of an embodiment of the present utility model is given;

[0020] Figure 3 The sectional schematic diagram of the screw rod structure of an embodiment of the present utility model is given;

[0021] Figure 4 For Figure 3 the enlarged schematic diagram of the docking ball structure of part A of

[0022] Reference numerals: 1, screw rod; 2, screw head; 3, protective sleeve; 4, anti-disassembly component; 41, chute; 42, docking plug; 43, docking slot; 44, knife groove; 45, screwdriver; 46, fixed cylinder; 5, positioning component; 51, docking slot; 52, docking ball. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them.

[0024] Generally, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model.

[0025] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0028] Embodiment 1

[0029] This embodiment provides an anti-disassembly screw. As Figure 1 shown, it includes a screw rod 1. The top end of the screw rod 1 is rotatably connected to a screw head 2, and the screw head 2 cannot be directly removed from the screw rod 1. A protective sleeve 3 is fixedly installed at the bottom of the screw head 2.

[0030] As Figure 2 and Figure 3As shown in the figure, an anti-disassembly component 4 is provided at the end of the screw rod 1. The anti-disassembly component 4 includes a docking plug 42, a docking slot 43, a tool slot 44 and a screwdriver 45. A fixing cylinder 46 is fixedly installed at the top of the screw rod 1. A chute 41 is opened at the center of the top of the screw rod 1 and located within the fixing cylinder 46. The docking plug 42 slides up and down in the chute 41. A weak magnet is fixedly installed at one end of the screw rod 1 facing the docking plug 42.

[0031] A docking slot 43 is opened at the bottom of the screw head 2. The docking slot 43 is directly above the docking plug 42. The docking plug 42 is drawn into the chute 41 under the adsorption of the weak magnet. The docking plug 42 and the docking slot 43 are in a separated state. At this time, rotating the screw head 2 cannot change the state of the screw rod 1. And the weak magnet prevents the docking plug 42 from being attracted by a generally magnetic screwdriver.

[0032] A tool slot 44 is opened at the top of the screw head 2. A strong magnet is fixedly installed inside the screwdriver 45. The end of the screwdriver 45 is aligned with the tool slot 44. The screw head 2 is made of one of an iron cap, a cobalt cap or a nickel cap. The tool slot 44 is made of one of a flat slot, a Phillips slot, a cross slot or a square slot. The shape of the end of the screwdriver 45 matches the shape of the tool slot 44.

[0033] Align the screwdriver 45 with the tool slot 44. Attract the docking plug 42 through the strong magnet inside the screwdriver 45. The magnetic force received by the docking plug 42 from the direction of the screwdriver 45 is stronger than the magnetic force at the screw rod 1. Therefore, the docking plug 42 is inserted into the docking slot 43.

[0034] The docking plug 42 is divided into upper and lower parts. The upper half of the docking plug 42 adopts a structure of two intersecting triangular prisms, which is convenient for the docking plug 42 to be inserted into the docking slot 43. The lower half of the docking plug 42 adopts a cross-shaped structure.

[0035] In this embodiment, the weak magnet at the end of the screw rod 1 attracts the docking plug 42, so that the docking plug 42 is separated from the docking slot 43. Rotating the screw head 2 cannot drive the screw rod 1 to rotate, achieving the anti-disassembly effect. During disassembly, the strong magnet inside the screwdriver 45 attracts the docking plug 42, so that the docking plug 42 is inserted into the docking slot 43. At this time, rotating the screw head 2 can drive the screw rod 1 to rotate, thus disassembling the screw rod 1.

[0036] Embodiment 2

[0037] Based on Embodiment 1, this embodiment proposes an anti-disassembly screw, as Figure 3 and Figure 4As shown in the figure, a positioning component 5 is arranged on the inner wall of the protective sleeve 3. The positioning component 5 includes a docking slot 51 and a docking ball 52. The docking slot 51 is opened on the inner wall of the protective sleeve 3, and the docking ball 52 is fixedly installed on the outer arc surface of the fixed cylinder 46. The docking slot 51 is clamped with the docking ball 52.

[0038] By rotating the screw head 2, the protective sleeve 3 rotates. When the docking slot 51 on the inner wall of the protective sleeve 3 rotates to the position of the docking ball 52, when the resistance received by the rotating protective sleeve 3 increases, it indicates that the docking ball 52 is inserted into the docking slot 51, and the docking plug 42 is aligned with the docking slot 43. Then, the screw rod 1 can be disassembled using the screwdriver 45.

[0039] The docking ball 52 adopts a hemispherical spring sheet structure, and the protective sleeve 3 is sleeved on the outer wall of the fixed cylinder 46.

[0040] In this embodiment, after the docking ball 52 is inserted into the docking slot 51, the resistance of rotating the protective sleeve 3 increases again to prompt the user that the docking plug 42 is aligned with the docking slot 43, which is convenient for the docking plug 42 to be inserted into the docking slot 43.

[0041] The above specific embodiments are only several alternative embodiments of the present invention. Based on the technical solution of the present invention and the relevant revelations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An anti-disassembly screw, characterized in that, Comprising: A screw rod (1), the top end of the screw rod (1) is rotatably connected with a screw head (2), and a protective sleeve (3) is fixedly installed at the bottom of the screw head (2); An anti-disassembly component (4), including a docking plug (42), a docking slot (43), a knife slot (44) and a screwdriver (45). A docking slot (43) is opened at the bottom of the screw head (2), the docking slot (43) is directly above the docking plug (42), the docking plug (42) is inserted into the docking slot (43), a knife slot (44) is opened at the top of the screw head (2), and a strong magnet is fixedly installed inside the screwdriver (45), and the end of the screwdriver (45) is aligned with the knife slot (44); The docking plug (42) slides up and down inside the screw rod (1).

2. The anti-disassembly screw according to claim 1, wherein: The docking plug (42) is divided into upper and lower parts. The upper half of the docking plug (42) adopts a structure of two intersecting triangular prisms, and the lower half of the docking plug (42) adopts a cross-shaped structure.

3. The anti-disassembly screw according to claim 1, wherein: The shape of the docking slot (43) matches the shape of the docking plug (42). The screw head (2) is made of one of an iron cap, a cobalt cap or a nickel cap, and a weak magnet is fixedly installed at one end of the screw rod (1) facing the docking plug (42).

4. The anti-disassembly screw according to claim 1, wherein: A fixing cylinder (46) is fixedly installed at the top of the screw rod (1), and a sliding groove (41) is opened at the top of the screw rod (1) and at the center of the fixing cylinder (46). The docking plug (42) slides up and down in the sliding groove (41).

5. The anti-disassembly screw according to claim 4, characterized in that: A positioning component (5) is arranged on the inner wall of the protective sleeve (3). The positioning component (5) includes a docking clamping groove (51) and a docking ball (52). A docking clamping groove (51) is opened on the inner wall of the protective sleeve (3), and a docking ball (52) is fixedly installed on the outer arc surface of the fixing cylinder (46). The docking clamping groove (51) is clamped with the docking ball (52).

6. The anti-disassembly screw according to claim 5, characterized in that: The docking ball (52) adopts a hemispherical spring sheet structure, and the protective sleeve (3) is sleeved on the outer wall of the fixing cylinder (46).

7. The anti-disassembly screw according to claim 1, wherein: The knife slot (44) is one of a straight slot, a plum blossom slot, a cross slot or a square slot, and the shape of the end of the screwdriver (45) matches the shape of the knife slot (44).

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