A flexible cable connection device

Abstract

The utility model discloses a flexible cable connecting device, from inside to outside includes in proper order: fixed cover, fastening cover, casing and connecting sleeve, the casing is by the casing of same structure no.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically to a flexible cable connection device. Background Technology

[0002] In modern industrial production and daily life, power transmission and signal transmission play a crucial role. Flexible cables, as the preferred power transmission material and signal transmission carrier in cable chain motion systems, have a wide range of applications, including but not limited to power supply for fire-fighting equipment and fire elevators in various buildings, power supply for equipment and lighting systems in important or densely populated buildings, high-temperature environments, flammable and explosive environments, environments requiring special cleanliness, and power supply for important equipment in power plants and nuclear power plants. A search revealed Chinese patent application number "CN202021631760.X", which discloses a flexible cable connection device with a sealing structure, comprising an upper shell and a lower shell. Semi-circular holes are drilled at both ends of the upper and lower shells, and two flexible cable bodies are movably inserted into the four semi-circular holes. Sealing rings are fixedly connected to the surfaces of the two flexible cable bodies. Two arc-shaped mounting grooves are drilled at the adjacent ends of the upper and lower shells, and the two sealing rings match the four arc-shaped mounting grooves.

[0003] The existing cable connection devices have the following problems during use: Existing cable connection devices simply place the connection point of two cables with aligned ends inside a housing consisting of an upper and lower shell. During cable pulling, the connection point of the two cables is prone to detaching from both ends of the housing, resulting in poor stability. Therefore, the present invention urgently needs to solve the problem of providing a flexible cable connection device that, during use, allows the two fastening sleeves on the two fixed sleeves inside the housing to move respectively, so that all the clamping pieces on the two fixed sleeves clamp the cables passing through the two fixed sleeves respectively, thereby fixing the two cables with aligned ends inside the housing, preventing the two cables from falling off from both ends of the housing during the cable pulling process, and improving the stability and reliability of the entire device. Utility Model Content

[0004] To address the aforementioned technical problems, the purpose of this utility model is to overcome the issue that existing technologies, which place the connection point of two cables with aligned ends within a housing consisting of an upper and lower housing, can easily detach from both ends of the housing during cable pulling, resulting in poor stability. This invention provides a flexible cable connection device that, during use, allows for the movement of two fastening sleeves on two fixed sleeves within the housing to clamp all the clamping plates on the two fixed sleeves that pass through the two fixed sleeves, thereby securing the two cables with aligned ends within the housing. This prevents the two cables from detaching from both ends of the housing during cable pulling, improving the stability and reliability of the entire device.

[0005] To achieve the above objectives, this utility model provides a flexible cable connection device, which includes, from the inside out: a fixing sleeve, a fastening sleeve, a housing, and a connecting sleeve. The housing is assembled from two housings of identical structure, No. 1 and No. 2. Cable inlets are opened at the ends of both housings. External threads that connect with the inner wall of the connecting sleeve are uniformly fixed on the outer surfaces of adjacent ends of housings No. 1 and No. 2. Two symmetrical frustum-shaped fixing sleeves for connecting two cables are coaxially and detachably assembled inside housings No. 1 and No. 2. Several clamping pieces integrally formed with the two fixing sleeves are evenly spaced along their respective circumferences at adjacent ends. Each fixing sleeve is fitted with a fastening sleeve that can move along its surface and lock after movement. The adjacent ends of the two fastening sleeves are respectively opened with clamping openings with a diameter smaller than that of the fixing sleeves, so that during the movement, all clamping pieces on each fixing sleeve are pushed toward the cable to clamp the cable and form a frustum-shaped clamping opening.

[0006] Preferably, each of the fastening sleeves is threadedly connected to the corresponding fixing sleeve.

[0007] Preferably, the outer surfaces of the two fixing sleeves are respectively provided with external threads in opposite directions, and the inner walls of the two fastening sleeves are respectively provided with internal threads that mate with the two fixing sleeves. The adjacent ends of the two fixing sleeves are connected together by at least one connecting assembly, the connecting assembly including: a connecting rod, a limiting member, and a spring; wherein, Each of the two fastening sleeves has a number of corresponding through holes at equal intervals along its circumference at its adjacent ends. A connecting rod is horizontally inserted between each pair of corresponding through holes in the two fastening sleeves. Each end of the connecting rod inside each fastening sleeve is fixedly provided with a limiting member with a diameter larger than the through hole. A spring is sleeved on each connecting rod between the two fastening sleeves, and both ends of each spring are fixed to the fastening sleeve.

[0008] Preferably, threads are uniformly provided on the outer surface of the end of each connecting rod located inside the two fastening sleeves, and each limiting member is provided with a threaded hole that is threadedly connected to the connecting rod, and each limiting member is threadedly connected to the end of the connecting rod.

[0009] Preferably, each of the fastening sleeves is fixedly provided with a sealing ring that fits against the cable.

[0010] Preferably, the cable inlets of the first and second housings protrude toward the fixing sleeve portion to form a frustum-shaped protrusion that cooperates with the fixing sleeve. The port of each fixing sleeve is fitted onto the protrusion and abuts against the side wall of the first or second housing.

[0011] Preferably, each of the protrusions is fitted with a sealing sleeve that fits the cable.

[0012] According to the above technical solution, the beneficial effects of the flexible cable connection device provided by this utility model in use are as follows: (1) Insert the two cables to be connected into the cable inlets of the first and second housings respectively, and move the first and second housings along the length of the cables to leave a certain gap between them. Then, put the two fixing sleeves on the cables from the ends and abut against the inner walls of the first and second housings respectively. Then, put the two fastening sleeves on the outer walls of the fixing sleeves from the ends of the cables through the clamping plates of the fixing sleeves, and rotate the two fastening sleeves to face each other. As the cable inlets of housings one and two move, their respective clamping openings compress all the clamping plates of the fixing sleeves towards the cable until the fixing sleeves can no longer be rotated. At this point, all the clamping plates on the fixing sleeves tightly grip the cable connection end onto the fixing sleeves, thus reliably fixing the cable connection end onto the fixing sleeves. Housings one and two then connect and fix the two fixing sleeves inside, thus securely connecting the two cables to be connected inside the housings. This prevents the cables from falling off during cable pulling.

[0013] (2) When the two fastening sleeves are rotated in opposite directions and approach each other, the distance between all the clamping plates on each fixed sleeve and the clamping opening of the fastening sleeve increases, so as to release the clamping relationship between the clamping plates and the connection end of the cable, thereby making it easier to pull the cable out of the housing and disassemble it.

[0014] In summary, this utility model uses two fastening sleeves on two fixed sleeves that are respectively moved inside the housing to make all the clamping pieces on the two fixed sleeves clamp the cables passing through the two fixed sleeves respectively, thereby fixing the two cables with aligned ends inside the housing and preventing the two cables from falling off from both ends of the housing during the cable pulling process, thus improving the stability and reliability of the entire device.

[0015] Other features and advantages of this utility model will be described in detail in the following detailed description section; and all parts not covered in this utility model are the same as or can be implemented using existing technology. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of a flexible cable connection device provided in a preferred embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of a flexible cable connection device provided in a preferred embodiment of the present invention; Figure 3 This is a schematic diagram of the assembly of the fastening sleeve and the fixing sleeve of the flexible cable connection device provided in a preferred embodiment of the present invention. Figure 4 This is a schematic diagram of the structure of the fixing sleeve of the flexible cable connection device provided in a preferred embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the housing and connecting sleeve 5 of the flexible cable connection device provided in a preferred embodiment of this utility model; Figure 6 yes Figure 5 Exploded view; Figure 7 This is a structural cross-sectional view of the first or second housing of the flexible cable connection device provided in a preferred embodiment of this utility model.

[0017] Explanation of reference numerals in the attached figures 1. Fixing sleeve; 2. Clamping plate; 3. Fastening sleeve; 4. Housing cover; 401. Housing cover No. 1; 402. Housing cover No. 2; 5. Connecting sleeve; 6. Connecting rod; 7. Limiting component; 8. Spring; 9. Sealing ring; 10. Sealing sleeve. Detailed Implementation

[0018] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0019] like Figure 1-7 As shown, the flexible cable connection device provided by this utility model includes, from the inside out: a fixing sleeve 1, a fastening sleeve 3, a housing 4, and a connecting sleeve 5. The housing 4 is assembled from housing 401 and housing 402 with identical structures. Cable inlets are opened at the ends of both housings. External threads that are threaded to the inner wall of the connecting sleeve 5 are uniformly fixed on the outer surfaces of adjacent ends of housing 401 and housing 402. Two symmetrical frustum-shaped fixing sleeves 1 for connecting two cables are coaxially and detachably assembled inside housing 401 and housing 402. Several clamping pieces 2 are uniformly spaced along their respective circumferences at adjacent ends of the two fixing sleeves 1. Each fixing sleeve 1 is fitted with a fastening sleeve 3 that can move along its surface and lock after movement. The adjacent ends of the two fastening sleeves 3 are respectively provided with clamping openings with a diameter smaller than that of the fixing sleeve 1, so that during the movement, all clamping pieces 2 on each fixing sleeve 1 are pushed toward the cable to clamp the cable and form a frustum-shaped clamping opening.

[0020] In the above solution, the components of the flexible connection device provided by this utility model are all made of insulating materials.

[0021] In use, the two cables to be connected are inserted into the cable inlets of housing 401 and housing 402 respectively. Housing 401 and housing 402 are then moved along the length of the cables to create a gap between them. The two fixing sleeves 1 are then fitted onto the cables from their ends and pressed against the inner walls of housing 401 and housing 402 respectively. Next, the two fastening sleeves 3 are inserted from the ends of the cables through the clamping plates 2 of the fixing sleeves 1 and fitted onto the outer walls of the fixing sleeves 1. The two fastening sleeves 3 are then rotated to separate them. Do not move the cable into the direction of the cable inlet of the first housing 401 and the second housing 402. During their movement, the clamping openings of both housings will press all the clamping plates 2 of the fixing sleeve 1 towards the cable until the fastening sleeve 3 can no longer be rotated. At this point, all the clamping plates 2 on the fixing sleeve 1 tightly clamp the cable connection end to the fixing sleeve 1, thus reliably fixing the cable connection end to the fixing sleeve 1. The first housing 401 and the second housing 402 connect and fix the two fixing sleeves 1 inside, thereby firmly fixing the two cables to be connected inside the housing 1. This prevents the cables from falling off during the pulling process.

[0022] Conversely, as the two fastening sleeves 1 are rotated in the opposite direction and move closer to each other, the distance between all the clamping pieces 2 on each of the fixed sleeves 1 and the clamping openings of the fastening sleeves 3 increases, thereby releasing the clamping relationship between the clamping pieces 2 and the connection end of the cable, making it easier to pull the cable out of the housing 1 and disassembly.

[0023] This invention uses two fastening sleeves 3 on two fixed sleeves 1 inside the housing 4 to move, thereby clamping all the clamping pieces 2 on the two fixed sleeves 1 to hold the cables passing through the two fixed sleeves 1. This fixes the two cables with aligned ends inside the housing 4, preventing the two cables from falling off from both ends of the housing 4 during cable pulling, and improving the stability and reliability of the entire device. In a preferred embodiment of this utility model, each of the fastening sleeves 3 is threadedly connected to the corresponding fixing sleeve 1.

[0024] In the above scheme, since the clamping opening of the fastening sleeve 3 is frustoconical, when the fastening sleeve 3 is placed on the fixing sleeve 1 and moves away from the clamping piece 2, the inner wall of the clamping opening squeezes all the clamping pieces 2 on the fixing sleeve 1 toward the cable to clamp the cable, thereby firmly fixing the cable on the fixing sleeve 1 and preventing the cable from moving inside the fixing sleeve 1.

[0025] In use, the fastening sleeve 3 can be rotated to allow it to move while rotating, and the fastening sleeve 3 can achieve a self-locking function after it stops rotating.

[0026] As the fastening sleeve 3 is fitted onto the fixing sleeve 1 and rotated to move from one end containing the clamping piece 2 toward the other end of the fixing sleeve 1, the clamping opening of the fastening sleeve 3 clamps all the clamping pieces 2 of the fixing sleeve 1 together to secure the cable. Similarly, another cable is assembled onto another fixing sleeve 1 using the above assembly method. Then, the first housing 401 and the second housing 402 are moved to align their openings, and then the connecting sleeve 5 is removed from either the first housing 401 or the second housing 402. In a preferred embodiment of this utility model, the outer surfaces of the two fixing sleeves 1 are respectively provided with external threads in opposite directions, and the inner walls of the two fastening sleeves 3 are respectively provided with internal threads that cooperate with the two fixing sleeves 1. The adjacent ends of the two fixing sleeves 1 are connected together by at least one connecting assembly, the connecting assembly including: a connecting rod 6, a limiting member 7, and a spring 8; wherein, Each of the two fastening sleeves 3 has a number of corresponding through holes at equal intervals along its circumference at its adjacent ends. A connecting rod 6 is horizontally inserted between each of the two corresponding through holes of the two fastening sleeves 3. Each end of the connecting rod 6 located inside each fastening sleeve 3 is fixedly provided with a limiting member 7 with a diameter larger than the through hole. A spring 8 is sleeved on each connecting rod 6 located between the two fastening sleeves 3. The two ends of each spring 8 are fixed to the fastening sleeve 3.

[0027] In the above scheme, since the outer walls of the two fixed sleeves 1 are provided with external threads in opposite directions, and the inner walls of the two fastening sleeves 3 are respectively provided with internal threads that cooperate with the external threads of the two fixed sleeves 1, under the connecting action of the connecting assembly, only one fastening sleeve 3 needs to be rotated, and the other fastening sleeve 3 can also rotate together, thereby achieving synchronous rotation of the two fastening sleeves 3. This improves assembly efficiency. Regardless of whether the two fastening sleeves 3 move closer or further away from each other during their rotation on their respective fixed sleeves 1, the spring 8 is always in a tensioned state.

[0028] As the two fastening sleeves 1 are rotated towards the two ends of the connecting rod 6 to increase the distance between them, the inner walls of the clamping openings of the two fastening sleeves 3 can squeeze all the clamping pieces 2 on the fixed sleeve 1 towards the cable until the fastening sleeve 3 can no longer be rotated. At this time, all the clamping pieces 2 on the fixed sleeve 1 tightly clamp the connection end of the cable onto the fixed sleeve 1, thereby reliably fixing the connection end of the cable onto the fixed sleeve 1. The two fixed sleeves 1 are connected and fixed inside by the first housing 401 and the second housing 402, thereby firmly fixing the two cables to be connected inside the housing 1. This prevents the cables from falling off during the pulling process.

[0029] Conversely, as the two fastening sleeves 1 are rotated in the opposite direction and move closer to each other, the distance between all the clamping pieces 2 on each of the fixed sleeves 1 and the clamping openings of the fastening sleeves 3 increases, thereby releasing the clamping relationship between the clamping pieces 2 and the connection end of the cable, making it easier to pull the cable out of the housing 1 and disassembly.

[0030] In a preferred embodiment of this utility model, threads are uniformly provided on the outer surface of the end of each connecting rod 6 located inside the two fastening sleeves 3, and each limiting member 7 is provided with a threaded hole that is threadedly connected to the connecting rod 6, and each limiting member 7 is threadedly connected to the end of the connecting rod 6.

[0031] In the above scheme, the outer diameter of the limiting member 7 is larger than the diameter of the through hole on the fastening sleeve 3, and it is assembled by means of threads, which facilitates the disassembly of the connecting rod 6.

[0032] Of course, when actually connecting the two cables together, all the connecting rods 6 and springs 8 on the two fastening sleeves 3 can be disassembled, and the two fastening sleeves 3 can be rotated directly to hold and fix the cable connection end on the fixing sleeve 1 with all the clamping pieces 2 on the fixing sleeve 1 through the fastening sleeves 3. This prevents the cable from falling off during the pulling process.

[0033] In a preferred embodiment of this utility model, each of the fastening sleeves 3 is fixedly provided with a sealing ring 9 that fits against the cable.

[0034] In the above solution, the sealing ring 9 serves to prevent dust and water.

[0035] In a preferred embodiment of this utility model, the cable inlets of the first housing 401 and the second housing 402 protrude towards the fixing sleeve 1 to form a truncated cone-shaped protrusion that cooperates with the fixing sleeve 1. The port of each fixing sleeve 1 is fitted onto the protrusion and abuts against the side wall of the first housing 401 or the second housing 402.

[0036] In the above scheme, the protrusion plays a positioning role. During assembly, the two fixing sleeves 1 can be respectively put on the protrusion of the first shell 401 or the second shell 402 so that one end of the fixing sleeve 1 abuts against the first shell 401 and the other end abuts against the other fixing sleeve 1, thereby playing a limiting role.

[0037] In addition, the two fixing sleeves 1 can also be coaxially fixed to the protrusions of the first shell 401 and the second shell 402 respectively and integrally formed with the protrusions.

[0038] In a preferred embodiment of the present invention, a sealing sleeve 10 that fits into the cable is fixedly fitted inside each of the protrusions.

[0039] In the above solution, it serves a sealing function to prevent moisture from entering the interior of the housing 4 through the cable inlet and coming into contact with the connection between the two cables, thus affecting the normal use of the cables.

[0040] In summary, the flexible cable connection device provided by this utility model overcomes the problem in the prior art that the connection point of two cables with aligned ends is placed inside a housing composed of an upper housing and a lower housing, which causes the connection point of the two cables to easily detach from both ends of the housing during the pulling process, resulting in poor stability.

[0041] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0042] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0043] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A flexible cable connection device, characterized in that, From the inside out, it includes: a fixing sleeve (1), a fastening sleeve (3), a housing (4), and a connecting sleeve (5); The housing (4) is assembled from a first housing (401) and a second housing (402) with identical structures. Cable inlets are provided at the ends of both housings. The outer surfaces of adjacent ends of the first housing (401) and the second housing (402) are uniformly and fixedly provided with external threads that connect to the inner wall of the connecting sleeve (5). The interiors of the first housing (401) and the second housing (402) are coaxially and detachably equipped with two symmetrical frustum-shaped fixtures for connecting the two cables together. The two fixed sleeves (1) are provided with a number of clamping pieces (2) evenly spaced along their respective circumferential directions at their adjacent ends. Each fixed sleeve (1) is fitted with a fastening sleeve (3) that can move along its surface and can be locked after moving. The two fastening sleeves (3) are respectively provided with a clamping opening with a diameter smaller than that of the fixed sleeve (1) so that during its movement, all the clamping pieces (2) on each fixed sleeve (1) are pushed toward the cable to clamp the cable and form a frustum-shaped clamping opening.

2. The flexible cable connection device according to claim 1, characterized in that, Each of the fastening sleeves (3) is threadedly connected to the corresponding fixing sleeve (1).

3. The flexible cable connection device according to claim 2, characterized in that, The outer surfaces of the two fixed sleeves (1) are respectively provided with external threads in opposite directions, and the inner walls of the two fastening sleeves (3) are respectively provided with internal threads that cooperate with the two fixed sleeves (1). The adjacent ends of the two fixed sleeves (1) are connected together by at least one connecting assembly, which includes: a connecting rod (6), a limiting member (7), and a spring (8); wherein, The two fastening sleeves (3) have a number of corresponding through holes at equal intervals along their respective circumferences at their adjacent ends. A connecting rod (6) is horizontally inserted between the two corresponding through holes of the two fastening sleeves (3). Each end of the connecting rod (6) located inside each fastening sleeve (3) is fixedly provided with a limiting member (7) with a diameter larger than the through hole. A spring (8) is sleeved on each connecting rod (6) located between the two fastening sleeves (3). The two ends of each spring (8) are fixed on the fastening sleeve (3).

4. The flexible cable connection device according to claim 3, characterized in that, The outer surface of the end of each of the connecting rods (6) located inside the two fastening sleeves (3) is uniformly provided with threads, and each of the limiting members (7) is provided with a threaded hole that is threadedly connected to the connecting rod (6), and each of the limiting members (7) is threadedly connected to the end of the connecting rod (6).

5. The flexible cable connection device according to claim 1, characterized in that, Each of the fastening sleeves (3) is fixedly provided with a sealing ring (9) that fits against the cable.

6. The flexible cable connection device according to claim 1, characterized in that, The cable inlets of the first housing (401) and the second housing (402) protrude towards the fixing sleeve (1) to form a truncated cone-shaped protrusion that cooperates with the fixing sleeve (1). The port of each fixing sleeve (1) is fitted onto the protrusion and abuts against the side wall of the first housing (401) or the second housing (402).

7. The flexible cable connection device according to claim 6, characterized in that, Each of the protrusions is fitted with a sealing sleeve (10) that fits into the cable.

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