Fastener with limiting structure

Abstract

The fastener with the limiting structure comprises a tightening latch and is characterized in that the tightening latch is in threaded connection with a nut, the top of the nut is provided with a limiting assembly, the limiting assembly comprises an installation ring which is in centering rotation connection with the outer wall of the top of the nut, and the outer wall of the top of the installation ring is provided with a first limiting groove; a through groove is formed in the middle of the tightening latch, a blocking rod is slidably inserted into the first limiting groove, the through groove can penetrate through the through groove, screw rods are in threaded connection with the two sides of the outer wall of the top of the mounting ring, the two screw rods can make contact with the outer wall of the top of the nut, and a reinforcing assembly is mounted in the blocking rod. Through the arrangement of the limiting assembly, two limits can be formed on the position of the nut after the fastener completes work, so that the problem that the nut is loosened due to external vibration is avoided, and the fastening piece is ensured to be connected more firmly.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a fastener with a limiting structure. Background Art

[0002] Bolt: A mechanical part, a cylindrical threaded fastener that is matched with a nut. A type of fastener consisting of a head and a screw (a cylinder with external threads), which must be matched with a nut to fasten two parts with through holes.

[0003] After searching, the utility model with Chinese patent announcement number CN218863033U discloses a high-strength bolt fastener, including: a bolt body, a knob mounted on one end of the bolt body, and a gasket sleeved on the outer wall of the bolt body. The strengthening layer includes an electroplated nickel layer and a zinc plating layer, the electroplated nickel layer is electroplated on the outer wall of the bolt rod, and the zinc plating layer is electroplated on the outer wall of the electroplated nickel layer.

[0004] Since the bolt fasteners are connected by threads, when they are fixed on vibrating equipment, long-term vibration can easily loosen the bolts or nuts. It is well known that loosening of bolts is very dangerous, so a fastener with a limiting structure is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a fastener with a limiting structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fastener with a limiting structure, including a bolt rod, characterized in that: the bolt rod is threadedly connected to a nut, a limiting assembly is installed on the top of the nut, the limiting assembly includes a mounting ring rotatably connected to the center of the top outer wall of the nut, a limiting groove is provided on the top outer wall of the mounting ring, a through groove is provided in the middle of the bolt rod, a blocking rod is slidably inserted in the limiting groove, and the through groove can pass through the through groove, screws are threadedly connected to both sides of the top outer wall of the mounting ring, and the two screws can contact the top outer wall of the nut.

[0007] As a further preferred embodiment of the present technical solution, a reinforcement component is installed inside the blocking rod, and the reinforcement component includes a second limiting groove opened in the middle of the blocking rod, a bidirectional screw rod is rotatably connected to the middle of the blocking rod, and the bidirectional screw rod passes through the second limiting groove, and two symmetrically arranged moving blocks are slidably connected in the second limiting groove, and the two moving blocks are respectively threadedly connected to the threads at both ends of the bidirectional screw rod, and the outer walls at both ends of the two moving blocks are rotatably connected to a connecting rod, and the two connecting rods at one end are rotatably connected to the same extrusion block.

[0008] After the fastener completes its work, the position of the nut can be restricted by two limits, thereby avoiding the problem of the fastening nut loosening due to external vibration, thereby ensuring that the fastener connection state is more secure. By pushing the mounting ring to rotate on the top of the nut, the limiting groove 1 on the top of the mounting ring is kept parallel to the through groove, and then the blocking rod is inserted into the limiting groove 1, and then the two screws are rotated so that one end of the screws squeezes the top wall of the nut, the effect of fixing the mounting ring can be achieved. Therefore, the nut cannot be easily rotated under the restriction of the blocking rod, and then the two-way screw rod is driven by the knob to rotate inside the limiting groove 2, and the two moving blocks connected to the limiting groove 2 will be driven by the two-way screw rod to approach each other, and the two moving blocks can drive the two extrusion blocks away from each other through the connecting rod until the extrusion blocks are tightly squeezed on the inner wall of the through groove. When the effectiveness of the screw rod is reduced, if the nut rotates due to vibration, its position also needs to change, and under the effect of the friction between the extrusion block and the inner wall of the through groove, the process of position change can be hindered, thereby forming two limits.

[0009] As a further preferred embodiment of the present technical solution, a plug block is coaxially fixed at the bottom of the bolt rod, a bolt head is provided on the external sliding sleeve of the plug block, a first plug rod is slidably inserted between the middle of one side of the bolt head and the plug block, a second plug rod is slidably inserted between the bolt head and the middle of the other side of the plug block, and the second plug rod is inserted into the first plug rod.

[0010] If the fastener rusts after being used for a long time and needs to be removed, it is only necessary to take out the second plug rod and the first plug rod inserted between the bolt head and the plug block in turn, and then the bolt head can be removed from the outside of the plug block, thereby making the disassembly of the fastener more convenient.

[0011] As a further preferred embodiment of the present technical solution, there is an interference fit between the first insertion rod and the second insertion rod.

[0012] As a further preferred embodiment of the present technical solution, a pointed head is coaxially fixed to one end of the top of the bolt rod.

[0013] As a further preferred embodiment of the present technical solution, outer walls of the two extrusion blocks at one end away from each other are both provided with anti-slip pads.

[0014] The utility model provides a fastener with a limiting structure, which has the following beneficial effects:

[0015] (1) The utility model sets a limit assembly to form two limits on the position of the nut after the fastener completes its work, thereby avoiding the problem of the fastening nut loosening due to external vibration, thereby ensuring that the fastener is more firmly connected. By pushing the mounting ring to rotate on the top of the nut, the limit groove 1 on the top of the mounting ring is kept parallel to the through groove, and then the blocking rod is inserted into the limit groove 1, and then the two screws are rotated so that one end of the screw squeezes the top wall of the nut, so that the effect of fixing the mounting ring can be achieved. Therefore, the nut cannot be easily rotated under the restriction of the blocking rod. Then, the two-way screw is driven by the knob to rotate inside the limit groove 2, and the two moving blocks connected to the limit groove 2 are driven by the two-way screw to move closer to each other. The two moving blocks can drive the two extrusion blocks to move away from each other through the connecting rod until the extrusion blocks are tightly squeezed on the inner wall of the through groove. When the screw effect is reduced, if the nut rotates due to vibration, its position also needs to change. Under the effect of the friction between the extrusion block and the inner wall of the through groove, the process of position change can be hindered, thereby forming two limits.

[0016] (2) The utility model provides an insert block, a first insert rod and a second insert rod. If the fastener is used for a long time and rusts, and needs to be removed, it is only necessary to take out the second insert rod and the first insert rod inserted between the bolt head and the insert block in turn, and then the bolt head can be removed from the outside of the insert block, thereby making it more convenient to disassemble the fastener. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall first-view structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall structure of the utility model from a second viewing angle;

[0019] Figure 3 This is a schematic diagram of the structure of the limit assembly of the utility model;

[0020] Figure 4 For the utility model Figure 1 The enlarged structural diagram at A in the middle;

[0021] In the figure: 1. bolt rod; 2. nut; 3. bolt head; 4. plug block; 5. first plug rod; 6. second plug rod; 7. pointed head; 8. limit assembly; 801. mounting ring; 802. limit groove one; 803. blocking rod; 804. screw rod; 805. through groove; 806. limit groove two; 807. bidirectional screw rod; 808. moving block; 809. connecting rod; 810. extrusion block. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] The utility model provides a technical solution: Figure 2 , Figure 3 As shown in FIG. 4 , in this embodiment, a fastener with a limiting structure includes a bolt rod 1, characterized in that: the bolt rod 1 is threadedly connected to a nut 2, a limiting assembly 8 is installed on the top of the nut 2, the limiting assembly 8 includes a mounting ring 801 rotatably connected to the top outer wall of the nut 2, a limiting groove 802 is provided on the top outer wall of the mounting ring 801, a through groove 805 is provided in the middle of the bolt rod 1, a blocking rod 803 is slidably inserted in the limiting groove 802, and the through groove 805 can pass through the through groove 805, and the top of the mounting ring 801 Screws 804 are threadedly connected on both sides of the outer wall, and the two screws 804 can contact the outer wall of the top of the nut 2. By pushing the mounting ring 801 to rotate on the top of the nut 2, the limiting groove 802 on the top of the mounting ring 801 is kept parallel to the through groove 805, and then the blocking rod 803 is inserted into the limiting groove 802, and then the two screws 804 are rotated so that one end of them squeezes the top wall of the nut 2, so that the effect of fixing the mounting ring 801 can be achieved. Therefore, the nut 2 cannot be easily rotated under the restriction of the blocking rod 803.

[0024] A reinforcement component is installed inside the blocking rod 803, and the reinforcement component includes a second limiting groove 806 opened in the middle of the blocking rod 803. A two-way screw rod 807 is rotatably connected to the middle of the blocking rod 803, and the two-way screw rod 807 passes through the second limiting groove 806. Two symmetrically arranged moving blocks 808 are slidably connected in the second limiting groove 806. The two moving blocks 808 are respectively threadedly connected to the threads at both ends of the two-way screw rod 807. The outer walls at both ends of the two moving blocks 808 are rotatably connected to a connecting rod 809, and the two connecting rods 809 at one end are rotatably connected to the same extrusion block 810.

[0025] The two-way screw rod 807 is driven by the knob to rotate inside the second limit groove 806, and the two moving blocks 808 connected in the second limit groove 806 are driven by the two-way screw rod 807 to approach each other, and the two moving blocks 808 can drive the two extrusion blocks 810 to move away from each other through the connecting rod 809 until the extrusion blocks 810 are tightly squeezed on the inner wall of the through groove 805. When the effectiveness of the screw rod 804 decreases, if the nut 2 rotates due to vibration, its position also needs to change. Under the effect of the friction between the extrusion block 810 and the inner wall of the through groove 805, the process of position change can be hindered, thereby forming two restrictions.

[0026] like Figure 2 As shown, a plug block 4 is coaxially fixed at the bottom of the bolt rod 1, a bolt head 3 is slidably sleeved on the outside of the plug block 4, a first plug rod 5 is slidably inserted in the middle of one side of the bolt head 3 and the plug block 4, a second plug rod 6 is slidably inserted in the middle of the other side of the bolt head 3 and the plug block 4, and the second plug rod 6 is inserted in the first plug rod 5.

[0027] The first plug rod 5 and the second plug rod 6 are interference fit, which can increase the friction between the two, thereby preventing the two from being easily separated from the bolt head 3.

[0028] If the fastener rusts after being used for a long time and needs to be removed, it is only necessary to remove the second plug rod 6 and the first plug rod 5 inserted between the bolt head 3 and the plug block 4 in turn, and the bolt head 3 can be removed from the outside of the plug block 4, thereby making the disassembly of the fastener more convenient.

[0029] like Figure 1 As shown in FIG. 2 , a pointed head 7 is coaxially fixed to one end of the top of the bolt rod 1 , making it easier to insert the bolt rod 1 into an external device.

[0030] like Figure 3 As shown, the outer walls of the two extrusion blocks 810 at one end away from each other are both provided with anti-slip pads, which can increase the friction between the extrusion blocks 810 and the through grooves 805, thereby further increasing the limiting effect.

[0031] The utility model provides a fastener with a limiting structure, and the specific working principle is as follows:

[0032] When the device is working, after the fastener is connected, the mounting ring 801 is pushed to rotate on the top of the nut 2 so that the limiting groove 802 on the top of the mounting ring 801 remains parallel to the through groove 805, and then the blocking rod 803 is inserted into the limiting groove 802, and then the two screw rods 804 are rotated so that one end of them squeezes the top wall of the nut 2, and the effect of fixing the mounting ring 801 can be achieved. Therefore, the nut 2 cannot be easily rotated under the restriction of the blocking rod 803, and then the two-way screw rod 807 is driven by the knob to rotate inside the limiting groove 806, and the two moving blocks 808 connected to the limiting groove 806 will be driven by the two-way screw rod 807 to move closer to each other, and the two moving blocks 808 will be moved closer to each other. The moving block 808 can drive the two extrusion blocks 810 to move away from each other through the connecting rod 809 until the extrusion block 810 is tightly squeezed against the inner wall of the through groove 805. When the effectiveness of the screw rod 804 decreases, if the nut 2 rotates due to vibration, its position also needs to change. Under the effect of the friction between the extrusion block 810 and the inner wall of the through groove 805, the process of position change can be hindered, thereby forming two restrictions. If the fastener is rusted due to long-term use and needs to be removed, it is only necessary to take out the second plug rod 6 and the first plug rod 5 inserted between the bolt head 3 and the plug block 4 in turn, and the bolt head 3 can be removed from the outside of the plug block 4, so that the disassembly of the fastener is also more convenient.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fastener with a limiting structure, comprising a bolt rod (1), characterized in that: The bolt rod (1) is threadedly connected to a nut (2), a limit assembly (8) is installed on the top of the nut (2), the limit assembly (8) comprises a mounting ring (801) rotatably connected to the top outer wall of the nut (2), a limit groove (802) is provided on the top outer wall of the mounting ring (801), a through groove (805) is provided in the middle of the bolt rod (1), a blocking rod (803) is slidably inserted in the limit groove (802), and the through groove (805) can pass through the through groove (805), and screw rods (804) are threadedly connected to both sides of the top outer wall of the mounting ring (801), and the two screw rods (804) can contact the top outer wall of the nut (2).

2. The fastener with a limiting structure according to claim 1, characterized in that: A reinforcement component is installed inside the blocking rod (803), and the reinforcement component includes a second limiting groove (806) opened in the middle of the blocking rod (803); a bidirectional screw rod (807) is rotatably connected to the middle of the blocking rod (803), and the bidirectional screw rod (807) passes through the second limiting groove (806); two symmetrically arranged moving blocks (808) are slidably connected in the second limiting groove (806); the two moving blocks (808) are respectively threadedly connected to the threads at both ends of the bidirectional screw rod (807); the outer walls at both ends of the two moving blocks (808) are both rotatably connected to a connecting rod (809); and the two connecting rods (809) at one end are rotatably connected to the same extrusion block (810).

3. The fastener with a limiting structure according to claim 1, characterized in that: An insert block (4) is coaxially fixed to the bottom of the bolt rod (1); a bolt head (3) is provided on the outer sliding sleeve of the insert block (4); a first insert rod (5) is slidably inserted in the middle of one surface of the bolt head (3) and the insert block (4); a second insert rod (6) is slidably inserted in the middle of the other surface of the bolt head (3) and the insert block (4); and the second insert rod (6) is inserted into the first insert rod (5).

4. The fastener with a limiting structure according to claim 3, characterized in that: The first insert rod (5) and the second insert rod (6) are in interference fit.

5. The fastener with a limiting structure according to claim 1, characterized in that: A pointed head (7) is coaxially fixed to one end of the top of the bolt rod (1).

6. The fastener with a limiting structure according to claim 2, characterized in that: The outer walls of the two extrusion blocks (810) at one end away from each other are both provided with anti-slip pads.

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