Protective device
By designing guide grooves, guide blocks, limiting components, and high-temperature resistant protective covers, the problems of low installation efficiency and easy separation in cable joint protection devices are solved, achieving the effects of rapid connection, high sealing performance, and easy maintenance, and is suitable for high-temperature and humid environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2026-03-06
AI Technical Summary
In existing cable joint protection devices, the protective box and the protective cover are fixed by bolts, which is inefficient to install and inconvenient to maintain after long-term use. In addition, there is no limiting structure between the joints, which makes the joints easy to separate and affects normal use.
The design employs a guide groove and guide block insertion mechanism, combined with the use of limit components and sealing rings. Through the cooperation of snap-fit and positioning groove, the joint can be quickly connected and separated. The protective cover design made of high-temperature resistant, waterproof, and corrosion-resistant materials improves sealing performance and facilitates maintenance.
It enables quick connection and disconnection of the connector, improves sealing and safety, is suitable for high temperature and humid environments, extends service life, and enhances practicality.
Smart Images

Figure CN223978409U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable joint technology, specifically a protective device. Background Technology
[0002] A cable joint is a connection point between different sections of a cable line to ensure that the cable becomes a continuous line. The main functions of a cable joint include locking and fixing the incoming and outgoing lines, as well as providing waterproofing, dustproofing, and vibration protection to ensure the safe and reliable operation of the cable. A cable joint protection device is a device specifically designed to protect cable joints, aiming to prevent them from being exposed to air and causing corrosion or damage, while providing necessary mechanical protection and fire protection.
[0003] Chinese Utility Model Patent Publication No. CN 220382744 U discloses a cable joint protection device. This device includes a protective box, a protective cover, and a guide tube, which effectively protects the cable joint. Two cables are inserted into the inner cavity of the protective box from both ends through the guide tube, and the protective cover seals the connected cable joint, thus effectively protecting the cable joint and preventing damage caused by external environmental factors. This improves the stability of cable transmission. However, the protective box and cover are fixed with bolts, resulting in low installation efficiency and inconvenient maintenance after prolonged use. Furthermore, the lack of a limiting structure between the joints makes them prone to separation during use, affecting normal operation. Therefore, this device has poor practicality and is not suitable for widespread adoption. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a protective device that can effectively solve the problems of the existing technology where the protective box and the protective cover are fixed by bolts, which has low installation efficiency, is inconvenient to maintain after long-term use, and does not have a limiting structure between the joints. In use, the two joints are prone to separation, affecting normal use, and has poor practicality, making it difficult to promote and use.
[0005] The technical solution adopted by this utility model is as follows: a protective device, including a connector one and a connector two. The inner surface of the connector one is provided with a guide groove, the inner surface of the connector two is fixedly installed with a guide block, the outer surface of the connector two is provided with an installation groove, the inner surface of the installation groove is provided with a sealing ring, the outer surface of the connector two is fixedly installed with a limit component, the outer surfaces of both the connector one and the connector two are provided with positioning grooves, the outer surface of the connector one is provided with a protective cover one and a protective cover two, the end of the protective cover one near the protective cover two is fixedly installed with a buckle, the end of the protective cover two near the protective cover one is provided with a slot and a groove, and the inner surfaces of both the protective cover one and the protective cover two are fixedly installed with positioning blocks.
[0006] Preferably, the first connector and the second connector are compatible, the guide block and the guide groove are plugged in, and the cross-section of the guide block is an isosceles trapezoidal structure.
[0007] Through the above technical solution, by cooperating with connector one and connector two, the operator inserts connector two into the interior of connector one, and at the same time inserts the guide block into the interior of the guide groove, thereby achieving a quick connection between connector one and connector two.
[0008] Preferably, the limiting assembly includes a connecting block one, a sliding rod one, a movable plate, a spring one, a sliding rod two, a movable sleeve, a spring two, a limiting block one, a pull rod, a limiting block two, a connecting block two, and a limiting groove two. The sliding rod one is fixedly installed on the inner surface of the connecting block one, and the movable plate is slidably connected to the outer surface of the sliding rod one. The spring one is fixedly installed on the outer surface of the movable plate. The sliding rod two is fixedly installed on the inner surface of the connecting block one, and the movable sleeve is slidably connected to the outer surface of the sliding rod two. The spring one is fixedly installed on the outer surface of the movable sleeve. Spring 2; a limiting block 1 is fixedly installed on the inner surface of the movable sleeve; a pull rod is fixedly installed on the outer surface of the movable sleeve; a limiting block 2 is fixedly installed on the side of the movable plate near the limiting block 1; a connecting block 2 is fixedly installed on the outer surface of the connector 1; a limiting groove 2 is formed on the side of the connecting block 2 near the connecting block 1; the end of the movable plate is inclined; the limiting block 2 and the limiting groove 2 are adapted to each other; the cross-section of the limiting block 2 is trapezoidal; and the cross-section of the limiting groove 2 is L-shaped.
[0009] Through the above technical solution, during the process of inserting connector two into connector one, when the limiting block two contacts the connecting block two, the spring one contracts, causing the moving plate to move inward. While quickly connecting connector one and connector two, the spring one rebounds, pushing the limiting block two into the limiting groove two, thus achieving quick limiting of connector two and connector one. When it is necessary to separate connector two from connector one, the operator pulls the lever, and the limiting block two squeezes the moving plate, causing the moving plate to move inward, thereby causing the limiting block two to move inward. Then, the limiting block two is pulled out of the limiting groove two, thus achieving quick separation of connector two and connector one.
[0010] Preferably, the sealing ring is a rubber sealing gasket, and three identical sealing rings are provided, with the three sealing rings distributed at equal intervals.
[0011] Through the above technical solution, the rubber sealing gasket has good sealing performance. The design of the sealing ring prevents water from entering the interior of joint one and joint two through the connection gap, which would cause leakage and affect the normal use of the whole. The overall safety and sealing performance are high. The design of three sealing rings further improves the overall sealing performance.
[0012] Preferably, the positioning block and the positioning groove are plugged in, and the buckle is adapted to the groove.
[0013] With the above technical solution, through the cooperation of protective cover one and protective cover two, the staff inserts the positioning block into the positioning groove. When the buckle comes into contact with protective cover two, the buckle deforms. When the positioning block is completely submerged in the positioning groove, the buckle returns to its original shape, so that the buckle is engaged in the groove. This enables the rapid installation of protective cover one and protective cover two, and facilitates maintenance after long-term use.
[0014] Preferably, the first protective cover includes a high-temperature resistant layer, a reinforcing layer, a waterproof layer, and a corrosion-resistant layer. The outer surface of the high-temperature resistant layer is provided with a reinforcing layer, the surface of the reinforcing layer is provided with a waterproof layer, and the outer surface of the waterproof layer is provided with a corrosion-resistant layer. The first protective cover and the second protective cover are made of the same material. The high-temperature resistant layer is an alumina ceramic layer, and the reinforcing layer is a fiber composite material layer.
[0015] Through the above technical solutions, the alumina ceramic layer has good high temperature resistance, can remain stable in high temperature environments, and is not easy to soften or melt, making it suitable for high temperature working environments and highly practical. The fiber composite material layer has the characteristics of high strength, light weight, corrosion resistance, high temperature resistance and strong designability, making it more robust.
[0016] Preferably, the waterproof layer is a polyurethane layer and the corrosion-resistant layer is a carbon fiber layer.
[0017] Through the above technical solutions, polyurethane has good waterproof and moisture-proof properties, making it suitable for humid environments and preventing it from rusting. The carbon fiber layer has the characteristics of being lightweight, high-strength, corrosion-resistant, and having design flexibility, which greatly extends its service life.
[0018] Compared with the prior art, the present invention provides a protective device with the following advantages:
[0019] 1. This protective device, due to the excellent sealing performance of the rubber sealing gasket and the design of the sealing ring, prevents water from entering the interior of connectors one and two through the connection gap, thus avoiding leakage and affecting the normal use of the whole device. The overall safety and sealing performance are high. The design of three sealing rings further improves the overall sealing performance. The design of the limiting component allows for quick connection between connectors one and two, making it difficult for connectors one and two to separate during use, thus making it highly practical.
[0020] 2. This protective device, through the cooperation of positioning blocks and positioning slots and buckles and slots, enables the rapid installation of protective cover one and protective cover two. It facilitates maintenance after prolonged use. The design of protective cover one and protective cover two provides a certain degree of protection for joint one and joint two in the event of a collision, making it highly practical. The alumina ceramic layer has excellent high-temperature resistance, remaining stable in high-temperature environments and not easily softening or melting, making it suitable for high-temperature working environments. The fiber composite material layer features high strength, lightweight, corrosion resistance, high-temperature resistance, and strong design flexibility, making it more robust. Polyurethane has excellent waterproof and moisture-proof properties, suitable for humid environments, and is not prone to rust. The carbon fiber layer features lightweight, high strength, corrosion resistance, and design flexibility, greatly extending its service life. Attached Figure Description
[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0022] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;
[0023] Figure 3 This is a schematic diagram of the sealing ring installation structure of this utility model;
[0024] Figure 4 This is a schematic diagram of the installation structure of the limiting component of this utility model;
[0025] Figure 5 This is a schematic diagram of the installation structure of protective cover one and protective cover two of this utility model;
[0026] Figure 6 This is a schematic diagram of the installation structure of the protective cover of this utility model.
[0027] The components are as follows: 1. Connector 1; 2. Connector 2; 3. Guide groove; 4. Guide block; 5. Mounting groove; 6. Sealing ring; 7. Limiting assembly; 701. Connecting block 1; 702. Slide rod 1; 703. Moving plate; 704. Spring 1; 705. Slide rod 2; 706. Moving sleeve; 707. Spring 2; 708. Limiting block 1; 709. Pull rod; 710. Limiting block 2; 711. Connecting block 2; 712. Limiting groove 2; 8. Positioning groove; 9. Protective cover 1; 901. High temperature resistant layer; 902. Reinforcing layer; 903. Waterproof layer; 904. Corrosion resistant layer; 10. Protective cover 2; 11. Buckle; 12. Slot; 13. Slot; 14. Positioning block. Detailed Implementation
[0028] 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.
[0029] Example 1: As Figure 1-6 As shown, the protective device provided by this utility model includes a connector 1 and a connector 2. The inner surface of connector 1 is provided with a guide groove 3. The inner surface of connector 2 is fixedly installed with a guide block 4. The outer surface of connector 2 is provided with an installation groove 5. The inner surface of the installation groove 5 is provided with a sealing ring 6. The outer surface of connector 2 is fixedly installed with a limit component 7. The outer surfaces of both connector 1 and connector 2 are provided with positioning grooves 8. The outer surface of connector 1 is provided with a protective cover 9 and a protective cover 10. The end of protective cover 9 near protective cover 10 is fixedly installed with a buckle 11. The end of protective cover 10 near protective cover 9 is provided with a slot 12 and a slot 13. The inner surfaces of both protective cover 9 and protective cover 10 are fixedly installed with positioning blocks 14.
[0030] Specifically, connector 1 and connector 2 are compatible, and guide block 4 and guide groove 3 are plug-in installed. The cross-section of guide block 4 is an isosceles trapezoid. The advantage is that by cooperating with connector 1 and connector 2, the operator can insert connector 2 into the interior of connector 1 and simultaneously insert guide block 4 into the interior of guide groove 3, thus achieving a quick connection between connector 1 and connector 2.
[0031] Specifically, the limiting component 7 includes a connecting block 701, a sliding rod 702, a movable plate 703, a spring 704, a sliding rod 705, a movable sleeve 706, a spring 707, a limiting block 708, a pull rod 709, a limiting block 710, a connecting block 711, and a limiting groove 712. The sliding rod 702 is fixedly installed on the inner surface of the connecting block 701, and the movable plate 703 is slidably connected to the outer surface of the sliding rod 702. A spring 704 is fixedly installed on the outer surface of the movable plate 703. The sliding rod 705 is fixedly installed on the inner surface of the connecting block 701, and the movable sleeve 706 is slidably connected to the outer surface of the sliding rod 705. A spring 707 is fixedly installed on the outer surface of the movable sleeve 706. A limit block 708 is fixedly installed on the inner surface of the movable sleeve 706. A pull rod 709 is fixedly installed on the outer surface of the movable sleeve 706. A limit block 710 is fixedly installed on the side of the movable plate 703 near the limit block 708. A connecting block 711 is fixedly installed on the outer surface of the connector 1. A limit groove 712 is opened on the side of the connecting block 711 near the connecting block 701. The end of the movable plate 703 is inclined. The limit block 710 and the limit groove 712 are adapted to each other. The cross section of the limit block 710 is trapezoidal and the cross section of the limit groove 712 is L-shaped. The advantage is that during the process of inserting connector 2 into connector 1, when the limiting block 2 710 contacts the connecting block 2 711, the spring 1 704 contracts, causing the moving plate 703 to move inward. While quickly connecting connector 1 and connector 2, the spring 1 704 rebounds, pushing the limiting block 2 710 into the limiting groove 2 712, which can quickly limit the connection between connector 2 and connector 1. When it is necessary to separate connector 2 from connector 1, the operator pulls the lever 709, and the limiting block 2 710 squeezes the moving plate 703, causing the moving plate 703 to move inward, thereby moving the limiting block 2 710 inward. Then, the limiting block 2 710 is pulled out of the limiting groove 2 712, which can quickly separate connector 2 from connector 1.
[0032] Specifically, the sealing ring 6 is a rubber gasket, and three identical sealing rings 6 are provided, distributed at equal intervals. The advantage is that, due to the excellent sealing performance of the rubber gasket, the design of the sealing rings 6 prevents water from entering the interior of connectors 1 and 2 through the connection gap, thus avoiding leakage and affecting the normal use of the entire unit. The overall safety and sealing performance are high, and the design of three sealing rings 6 further enhances the overall sealing performance.
[0033] Example 2: Figure 2-6 As shown, this is an improvement on the previous embodiment.
[0034] Specifically, the positioning block 14 and the positioning groove 8 are installed by plugging in, and the buckle 11 is compatible with the groove 13. The advantage is that, through the cooperation of the first protective cover 9 and the second protective cover 10, the operator inserts the positioning block 14 into the interior of the positioning groove 8. When the buckle 11 contacts the second protective cover 10, the buckle 11 deforms. When the positioning block 14 is completely submerged in the interior of the positioning groove 8, the buckle 11 returns to its original shape, so that the buckle 11 is engaged in the interior of the groove 13. This allows for quick installation of the first protective cover 9 and the second protective cover 10, and facilitates maintenance after long-term use.
[0035] Specifically, the protective cover 9 includes a high-temperature resistant layer 901, a reinforcing layer 902, a waterproof layer 903, and a corrosion-resistant layer 904. The reinforcing layer 902 is disposed on the outer surface of the high-temperature resistant layer 901, the waterproof layer 903 is disposed on the surface of the reinforcing layer 902, and the corrosion-resistant layer 904 is disposed on the outer surface of the waterproof layer 903. The protective cover 9 and the protective cover 10 are made of the same material. The high-temperature resistant layer 901 is an alumina ceramic layer, and the reinforcing layer 902 is a fiber composite material layer. The advantages are that the alumina ceramic layer has good high-temperature resistance, remains stable in high-temperature environments, and is not easily softened or melted, making it suitable for high-temperature working environments and highly practical. The fiber composite material layer has high strength, is lightweight, corrosion-resistant, high-temperature resistant, and highly designable, making it more robust.
[0036] Specifically, the waterproof layer 903 is a polyurethane layer, and the corrosion-resistant layer 904 is a carbon fiber layer. The advantages are that polyurethane has excellent waterproof and moisture-proof properties, making it suitable for humid environments and preventing rusting, while the carbon fiber layer features lightweight, high strength, corrosion resistance, and design flexibility, greatly extending its service life.
[0037] Working principle: During installation, by cooperating with connector 1 and connector 2, the operator inserts connector 2 into connector 1 and simultaneously inserts guide block 4 into guide groove 3, achieving a quick connection between connector 1 and connector 2. During the insertion of connector 2 into connector 1, when limit block 2 710 contacts connecting block 2 711, spring 1 704 contracts, causing moving plate 703 to move inward. Simultaneously, as connector 1 and connector 2 are quickly connected, spring 1 704 rebounds, pushing limit block 2 710 into limit groove 2 712. Inside, connector 2 and connector 1 can be quickly positioned. When it is necessary to separate connector 2 and connector 1, the operator pulls the lever 709, and the limiting block 710 presses the moving plate 703, causing the moving plate 703 to move inward, thereby moving the limiting block 710 inward. Then, the limiting block 710 is pulled out of the limiting groove 712, thus achieving the rapid separation of connector 2 and connector 1. Subsequently, through the cooperation of protective cover 9 and protective cover 10, the operator inserts the positioning block 14 into the positioning groove 8. When the buckle 11 engages with the protective cover 1... When there is zero contact, the buckle 11 deforms. When the positioning block 14 is completely submerged in the positioning groove 8, the buckle 11 returns to its original shape, allowing the buckle 11 to engage with the groove 13. This enables quick installation of the protective cover 19 and the protective cover 20. It facilitates maintenance after prolonged use. During use, the rubber sealing gasket has excellent sealing performance. The design of the sealing ring 6 prevents water from entering the interior of the connectors 11 and 22 through the connection gap, thus preventing leakage and affecting the normal operation of the entire system. The overall safety and sealing performance are high. The design of six sealing rings further improves the overall sealing performance. The alumina ceramic layer has good high-temperature resistance and can remain stable in high-temperature environments, making it difficult to soften or melt. It is suitable for high-temperature working environments and has high practicality. The fiber composite material layer has the characteristics of high strength, light weight, corrosion resistance, high temperature resistance and strong design flexibility, making it more robust. Polyurethane has good waterproof and moisture-proof properties, making it suitable for humid environments and preventing it from rusting. The carbon fiber layer has the characteristics of lightweight, high strength, corrosion resistance and design flexibility, which greatly extends its service life.
[0038] 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 protective device comprising a first joint (1) and a second joint (2), characterized in that: The inner surface of the joint one (1) is provided with a guide groove (3), the inner surface of the joint two (2) is fixedly installed with a guide block (4), the outer surface of the joint two (2) is provided with a mounting groove (5), the inner surface of the mounting groove (5) is provided with a sealing ring (6), the outer surface of the joint two (2) is fixedly installed with a limiting assembly (7), the outer surfaces of the joint one (1) and the joint two (2) are provided with positioning grooves (8), the outer surface of the joint one (1) is provided with a protective cover one (9) and a protective cover two (10), one end of the protective cover one (9) close to the protective cover two (10) is fixedly installed with a buckle (11), one end of the protective cover two (10) close to the protective cover one (9) is provided with a insertion slot (12) and a clamping groove (13), the inner surfaces of the protective cover one (9) and the protective cover two (10) are fixedly installed with positioning blocks (14).
2. A guard according to claim 1, characterised in that: The joint one (1) is matched with the joint two (2), the guide block (4) is insertedly installed with the guide groove (3), the cross section of the guide block (4) is in the shape of "isosceles trapezoidal".
3. A guard according to claim 1, wherein: The limiting assembly (7) comprises a connecting block one (701), a sliding rod one (702), a moving plate (703), a spring one (704), a sliding rod two (705), a moving sleeve (706), a spring two (707), a limiting block one (708), a pull rod (709), a limiting block two (710), a connecting block two (711) and a limiting groove two (712), the inner surface of the connecting block one (701) is fixedly installed with the sliding rod one (702), the outer surface of the sliding rod one (702) is slidably connected with the moving plate (703), the outer surface of the moving plate (703) is fixedly installed with the spring one (704), the inner surface of the connecting block one (701) is fixedly installed with the sliding rod two (705), the outer surface of the sliding rod two (705) is slidably connected with the moving sleeve (706), the outer surface of the moving sleeve (706) is fixedly installed with the spring two (707), the inner surface of the moving sleeve (706) is fixedly installed with the limiting block one (708), the outer surface of the moving sleeve (706) is fixedly installed with the pull rod (709), one side of the moving plate (703) close to the limiting block one (708) is fixedly installed with the limiting block two (710), the outer surface of the joint one (1) is fixedly installed with the connecting block two (711), one side of the connecting block two (711) close to the connecting block one (701) is provided with the limiting groove two (712), the end of the moving plate (703) is obliquely arranged, the limiting block two (710) is matched with the limiting groove two (712), the cross section of the limiting block two (710) is in the shape of "trapezoidal", the cross section of the limiting groove two (712) is in the shape of "L".
4. The guard of claim 1, wherein: The sealing ring (6) is a rubber sealing gasket, and three sealing rings (6) are arranged at equal intervals.
5. The guard of claim 1, wherein: The positioning block (14) is insertedly installed with the positioning groove (8), the buckle (11) is matched with the clamping groove (13).
6. The guard of claim 1, wherein: The protective cover one (9) comprises a high-temperature-resistant layer (901), a reinforcing layer (902), a waterproof layer (903) and a corrosion-resistant layer (904), the outer surface of the high-temperature-resistant layer (901) is provided with the reinforcing layer (902), the surface of the reinforcing layer (902) is provided with the waterproof layer (903), the outer surface of the waterproof layer (903) is provided with the corrosion-resistant layer (904), the protective cover one (9) and the protective cover two (10) are made of the same material, the high-temperature-resistant layer (901) is an alumina ceramic layer, and the reinforcing layer (902) is a fiber composite material layer.
7. A guard according to claim 6, wherein: The waterproof layer (903) is a polyurethane layer, and the corrosion-resistant layer (904) is a carbon fiber layer.
Citation Information
Patent Citations
Cable joint protection device
CN220382744U