Bolt fastener of electric power fitting

Abstract

The utility model discloses a bolt fastener for electric power fittings, which comprises a bolt part, the surface of the bolt part is in sliding connection with a sliding sleeve, the surface of the sliding sleeve is sleeved with a protective cover, one side of the protective cover is inserted with a sealing assembly, the surface of the bolt part is in sliding connection with an extrusion assembly, and the extrusion assembly is connected with the sliding sleeve. And one side of the extrusion assembly is fixedly connected with a fixed ring, the sealing assembly comprises a movable ring inserted into one side of the protective cover, one side of the movable ring is fixedly connected with a plurality of sets of supporting springs in an annular array, and one end of each supporting spring is fixedly connected with a sealing ring. Through the arrangement of the protective cover, the sealing assembly and the sliding sleeve, the effect of sealing and protecting the joint between the bolt piece and the electric power fitting is achieved during use, it is ensured that the sealing ring is tightly attached to the surface of the electric power fitting all the time, water and dust are effectively prevented from entering the joint, and the service life of the bolt fastener is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of power fittings technology, specifically to a bolt fastener for power fittings. Background Technology

[0002] Bolts in power fittings are primarily used for connecting and securing various devices in power systems, ensuring system stability and safety. These bolts typically possess high strength and corrosion resistance, belonging to the category of special standard fasteners, and are specifically designed for power systems. As the main metal connection component, bolts are usually made of high-strength steel or stainless steel to ensure the stability of the connection. Bolt fasteners not only withstand mechanical loads but also must cope with the effects of vibration and thermal expansion that may occur during the operation of power equipment; therefore, they need to meet high strength and durability requirements.

[0003] Patent document CN222863856U discloses a bolt fastener for power fittings. This utility model discloses a bolt fastener for power fittings, including a bolt and a nut. The bolt has a threaded structure with several interruptions forming several fixing grooves. The nut is detachably connected to the threaded structure and also detachably connected to the fixing grooves. This utility model's bolt fastener for power fittings connects the nut and bolt, causing the nut to engage with the fixing grooves. When the equipment vibrates, it restricts relative sliding between the nut and bolt, preventing the nut from loosening.

[0004] However, when using this device, it is difficult to seal and protect the connection between the bolts and electrical fittings, which makes it easy for moisture and dust to enter the connection, causing corrosion and reducing the service life of the bolts and fasteners. Utility Model Content

[0005] The main purpose of this utility model is to provide a bolt fastener for power fittings, which can effectively solve the problem in the background art that it is difficult to seal and protect the connection between the bolt and the power fitting during use, which makes it easy for moisture and dust to enter the connection, causing corrosion and reducing the service life of the bolt fastener.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A bolt fastener for an electrical fitting includes a bolt, a sliding sleeve slidably connected to the surface of the bolt, a protective cover fitted onto the surface of the sliding sleeve, a sealing assembly inserted into one side of the protective cover, a pressing assembly slidably connected to the surface of the bolt, a fixing ring fixedly connected to one side of the pressing assembly, and a sealing assembly including a movable ring inserted into one side of the protective cover, a plurality of support springs fixedly connected in a circular array on one side of the movable ring, and a sealing ring fixedly connected to one end of each support spring; the pressing assembly includes two sets of sliders slidably connected to the surface of the bolt, a sliding ring fixedly connected to one side of each slider, and a telescopic spring fixedly connected to one side of each sliding ring.

[0008] Preferably, a damping ring is rotatably connected to one side of the fixed ring, and a compression ring is fixedly connected to one side of the damping ring. The damping ring achieves dynamic friction damping through rotatable connection. In the vibration environment, it contacts the friction surface of the fixed ring to consume energy and suppress the transmission of mechanical vibration. The compression ring is fixed to one side of the damping ring to enhance the contact surface pressure and prevent uneven wear, thereby improving damping stability.

[0009] Preferably, a connecting ring is fixedly connected to one end of the telescopic spring, and a number of positioning rods are fixedly connected to one side of the connecting ring. The connecting ring evenly transmits the elastic force of the telescopic spring to the sliding sleeve to avoid local stress concentration.

[0010] Preferably, the positioning rod is inserted into the interior of the sliding sleeve, and the interior of the sliding sleeve has a slot adapted to the positioning rod. The positioning rod is guided and engaged with the sliding sleeve through the slot, which limits radial displacement and ensures axial movement accuracy.

[0011] Preferably, the surface of the bolt is provided with a groove that matches the slider, and one end of the bolt is fixedly connected to a hexagonal nut, which provides a standard tool interface for easy installation and disassembly.

[0012] Preferably, both ends of the bolt are threaded with limit nuts, and a washer is slidably connected to the surface of the bolt. The limit nuts and washer work together to adjust the preload of the sealing assembly and the bolt, and prevent the threads from loosening.

[0013] Preferably, one side of the protective cover has an insertion hole that matches the movable ring, and the surface of the bolt is coated with a protective layer. The insertion hole and the movable ring are connected to form a labyrinth seal, which prevents external dust and moisture from entering, increases the sealing performance, and resists the corrosion of the protective cover by the external environment.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model, through the setting of a protective cover, sealing component and sliding sleeve, allows for the use of electrical fittings secured by bolts. Tightening the limiting nut on one side of the protective cover causes the limiting nut to push the sliding sleeve and protective cover to move, thereby pushing the sealing ring tightly against the surface of the electrical fitting. Simultaneously, the sealing ring compresses the support spring, causing the support spring to contract under force. Since the movable ring is inserted into the slot on one side of the protective cover, the support spring pushes the sealing ring in the opposite direction, thus achieving a sealing and protective effect at the connection between the bolts and the electrical fitting. This ensures that the sealing ring is always tightly fitted to the surface of the electrical fitting, effectively preventing moisture and dust from entering the connection and extending the service life of the bolts and fasteners.

[0016] 2. This utility model, through the setting of the extrusion component, allows the sliding sleeve to slide within the groove on the bolt as the limiting nut pushes it during use. This causes the sliding sleeve to slide within the groove on the bolt, which in turn causes the connecting ring to compress the telescopic spring. The telescopic spring deforms under force, generating elastic force that pushes the sliding ring. In turn, the sliding ring compresses the fixed ring, causing the friction surface inside the fixed ring to be in close contact with the friction surface on one side of the damping ring. When subjected to vibration, the telescopic spring continuously pushes the sliding ring, keeping the friction surfaces of the fixed ring and the damping ring in close contact. This allows energy to be dissipated through sliding friction between the friction surfaces under vibration. The preload of the telescopic spring can compensate for the wear gap of the contact surface caused by vibration, thus improving the locking effect of the bolt fastener. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

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

[0020] Figure 4 This is a schematic diagram of the sealing component structure of this utility model.

[0021] In the diagram: 1. Bolt; 2. Protective cover; 3. Sealing assembly; 301. Moving ring; 302. Support spring; 303. Sealing ring; 4. Compression assembly; 401. Slider; 402. Sliding ring; 403. Telescopic spring; 5. Fixed ring; 6. Sliding sleeve; 7. Damping ring; 8. Compression ring; 9. Connecting ring; 10. Positioning rod; 11. Hexagonal nut; 12. Limit nut; 13. Washer. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4 This utility model provides a technical solution: a bolt fastener for power fittings, including a bolt 1, a sliding sleeve 6 slidably connected to the surface of the bolt 1, a protective cover 2 fitted onto the surface of the sliding sleeve 6, and a sealing component 3 inserted into one side of the protective cover 2. Through the arrangement of the protective cover 2, the sealing component 3, and the sliding sleeve 6, the connection between the bolt 1 and the power fitting is sealed and protected, ensuring that the sealing ring 303 is always tightly fitted to the surface of the power fitting, effectively preventing moisture and dust from entering the connection, and extending the service life of the bolt fastener. A pressing component 4 is slidably connected to the surface of the bolt 1; through the setting of the pressing component 4, it can withstand vibration in a vibrating environment. The energy is consumed by sliding friction between the friction surfaces. The preload of the telescopic spring 403 can compensate for the wear gap of the contact surface caused by vibration, thus improving the locking effect of the bolt fastener. A fixed ring 5 is fixedly connected to one side of the extrusion assembly 4. The sealing assembly 3 includes a movable ring 301 inserted into one side of the protective cover 2. Several sets of support springs 302 are fixedly connected in a ring array on one side of the movable ring 301. A sealing ring 303 is fixedly connected to one end of the support spring 302. The extrusion assembly 4 includes two sets of sliders 401 slidably connected to the surface of the bolt 1. A sliding ring 402 is fixedly connected to one side of the slider 401. A telescopic spring 403 is fixedly connected to one side of the sliding ring 402.

[0024] Please see Figure 2 and Figure 3 A damping ring 7 is rotatably connected to one side of the fixed ring 5, and a compression ring 8 is fixedly connected to one side of the damping ring 7; a connecting ring 9 is fixedly connected to one end of the telescopic spring 403, and several sets of positioning rods 10 are fixedly connected to one side of the connecting ring 9.

[0025] The damping ring 7 achieves dynamic friction damping through a rotating connection. In a vibration environment, it contacts the friction surface of the fixed ring 5 to consume energy and suppress the transmission of mechanical vibration. The compression ring 8 is fixed to one side of the damping ring 7 to enhance the contact surface pressure and prevent uneven wear, thereby improving damping stability. The connecting ring 9 evenly transmits the elastic force of the telescopic spring 403 to the sliding sleeve 6 to avoid local stress concentration. The positioning rod 10 is guided and engaged with the sliding sleeve 6 through a slot to limit radial displacement and ensure axial movement accuracy.

[0026] Please see Figure 2 and Figure 3The positioning rod 10 is inserted into the inside of the sliding sleeve 6, and the inside of the sliding sleeve 6 is provided with a slot that matches the positioning rod 10; the surface of the bolt 1 is provided with a groove that matches the slider 401, and one end of the bolt 1 is fixedly connected to a hexagonal nut 11.

[0027] The groove on the surface of the bolt 1 cooperates with the slider 401 to achieve linear sliding of the extrusion assembly 4, preventing rotational interference. The hexagonal nut 11 provides a standard tool interface for easy installation and disassembly. The limit nut 12 and the washer 13 work together to adjust the preload of the sealing assembly 3 and the bolt 1, and prevent the threads from loosening, thereby improving the fastening effect of the bolt fastener.

[0028] Please see Figure 2 Both ends of the bolt 1 are threaded with limit nuts 12, and the surface of the bolt 1 is slidably connected with a washer 13; one side of the protective cover 2 is provided with an insertion hole that matches the movable ring 301, and the surface of the bolt 1 is coated with a protective layer.

[0029] The insertion hole and the movable ring 301 form a labyrinth seal, which prevents external dust and moisture from entering, increases the sealing performance, and resists the corrosion of the protective cover 2 by the external environment; the protective layer on the surface of the bolt 1, such as zinc plating or epoxy coating, improves corrosion resistance, adapts to harsh outdoor environments, and increases the service life of the bolt 1.

[0030] Working principle: During use, the power fitting is secured by bolt 1, which in turn loosens the limiting nut 12 on one side of the protective cover 2. This causes the limiting nut 12 to push the sliding sleeve 6 and the protective cover 2 to move, thereby pushing the sealing ring 303 to press tightly against the surface of the power fitting. Simultaneously, the sealing ring 303 compresses the support spring 302 in the opposite direction, causing the support spring 302 to contract under force. Since the movable ring 301 is inserted into the slot on one side of the protective cover 2, the support spring 302 pushes the sealing ring 303 in the opposite direction. During use, as the limiting nut 12 pushes the sliding sleeve 6, the sliding sleeve 6... The bolt 1 slides within the groove, causing the connecting ring 9 to compress the telescopic spring 403. This causes the telescopic spring 403 to deform under force, generating elastic force that pushes the sliding ring 402. Consequently, the sliding ring 402 compresses the fixed ring 5, causing the friction surface inside the fixed ring 5 to be in close contact with the friction surface on one side of the damping ring 7. When subjected to vibration, the telescopic spring 403 continuously pushes the sliding ring 402, keeping the friction surfaces of the fixed ring 5 and the damping ring 7 in close contact. This is the entire working process of the device. Any content not described in detail in this specification is considered prior art known to those skilled in the art.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bolt fastener for an electrical fitting, comprising a bolt (1), characterized in that: A sliding sleeve (6) is slidably connected to the surface of the bolt (1), a protective cover (2) is fitted onto the surface of the sliding sleeve (6), a sealing component (3) is inserted into one side of the protective cover (2), a pressing component (4) is slidably connected to the surface of the bolt (1), and a fixing ring (5) is fixedly connected to one side of the pressing component (4). The sealing assembly (3) includes a movable ring (301) inserted into one side of the protective cover (2). A number of support springs (302) are fixedly connected to one side of the movable ring (301) in a ring array. A sealing ring (303) is fixedly connected to one end of the support springs (302). The extrusion assembly (4) includes two sets of sliders (401) slidably connected to the surface of the bolt (1). A sliding ring (402) is fixedly connected to one side of the slider (401), and a telescopic spring (403) is fixedly connected to one side of the sliding ring (402).

2. The bolt fastener for an electrical fitting according to claim 1, characterized in that: A damping ring (7) is rotatably connected to one side of the fixed ring (5), and a compression ring (8) is fixedly connected to one side of the damping ring (7).

3. The bolt fastener for an electrical fitting according to claim 1, characterized in that: One end of the telescopic spring (403) is fixedly connected to a connecting ring (9), and one side of the connecting ring (9) is fixedly connected to several sets of positioning rods (10).

4. The bolt fastener for an electrical fitting according to claim 3, characterized in that: The positioning rod (10) is inserted into the interior of the sliding sleeve (6), and the interior of the sliding sleeve (6) has a slot that is compatible with the positioning rod (10).

5. The bolt fastener for an electrical fitting according to claim 1, characterized in that: The surface of the bolt (1) is provided with a groove that is compatible with the slider (401), and a hexagonal nut (11) is fixedly connected to one end of the bolt (1).

6. The bolt fastener for an electrical fitting according to claim 1, characterized in that: Both ends of the bolt (1) are threaded with limit nuts (12), and the surface of the bolt (1) is slidably connected with a washer (13).

7. The bolt fastener for an electrical fitting according to claim 1, characterized in that: The protective cover (2) has an insertion hole on one side that is compatible with the movable ring (301), and the surface of the bolt (1) is coated with a protective layer.

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