Fire resistant, flame retardant silicone connector

Abstract

The utility model relates to the technical field of flexible connection, concretely to a fire -retardant silica gel connecting piece, its solution existing flexible connecting piece appears excessive stretch problem in the use process, including the connecting sleeve, both ends of connecting sleeve all install the connecting frame, every connecting frame all install rotatable mounting bracket on, mounting bracket all install rotatable connecting piece on, and the through -hole is seted up to connecting piece, and both sides corresponding connecting piece's through -hole is installed to the connecting rod and is penetrated, the length of connecting rod is greater than the interval between both sides through -hole, and both ends of connecting rod all set up the limit stop, the size of limit stop is greater than the diameter of through -hole, and the interval of connecting rod both sides limit stop, the stretch distance of both sides connecting frame is positioned, the diameter of through -hole is greater than the diameter of connecting rod, and the interval of connecting rod both sides limit stop can be adjusted.

Description

Technical Field

[0001] This utility model relates to the field of flexible connection technology, specifically a fireproof and flame-retardant silicone connector. Background Technology

[0002] In industrial production and other fields, flexible silicone connectors are widely used in various fixed structures due to their good elasticity and adaptability. Especially in the connection and assembly of connecting sleeves, the connection and fixation between components are often achieved by the cooperation of connecting frames and connecting sleeves, providing basic support for the assembly and use of the overall structure.

[0003] A search revealed a fire-retardant silicone connector disclosed in publication number CN211039969U. In the prior art, the fixing ring structure uses fixed assembly at both ends of the fixing ring. However, in actual use, when the fixing ring is subjected to external tensile force, once the tensile force exceeds the tolerance threshold of the fixing ring, it is very easy to cause damage such as tearing and breakage of the fixing ring. This not only affects the normal use stability of the fixing structure, but may also cause safety hazards due to component damage, making it difficult to meet the requirements of long-term and reliable use. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a fire-retardant silicone connector, solving the problem of excessive stretching that occurs during the use of existing flexible connectors.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fire-retardant silicone connector, comprising a connecting sleeve, with connecting frames installed at both ends of the connecting sleeve, and a rotatable mounting bracket installed on each connecting frame; a rotatable connector is installed on the mounting bracket, and a through hole is formed on the connector; a connecting rod is installed through the through hole on both sides of the connector, the length of the connecting rod being greater than the distance between the two through holes, and a limit block is provided at both ends of the connecting rod; the size of the limit block is greater than the diameter of the through hole, and the distance between the limit blocks on both sides of the connecting rod limits the stretching distance of the connecting frames on both sides.

[0006] Furthermore, the diameter of the through hole is larger than the diameter of the connecting rod.

[0007] Furthermore, the spacing between the limiting blocks on both sides of the connecting rod is adjustable.

[0008] Furthermore, both outer walls of the connecting rod are provided with external threads, and the limiting block has a threaded hole inside that matches the external threads of the connecting rod. The limiting block and the connecting rod are connected by threads.

[0009] Furthermore, both ends of the connecting rod are provided with anti-detachment blocks, which are used to prevent the limiting block from detaching from the connecting rod; the limiting block is arranged in the form of a regular polygon.

[0010] Furthermore, the connecting rod has an internal mounting groove, in which a lead screw is installed and rotatably connected to the connecting rod; the outer wall of the connecting rod has a sliding groove, which communicates with the mounting groove; a slider is installed in the mounting groove, and the slider has a threaded hole matching the lead screw, with the slider and lead screw connected by threads; a limiting block is installed on the outside of the connecting rod, and the slider and limiting block are fixedly connected by a connecting block, with the connecting block slidably installed in the sliding groove.

[0011] Furthermore, the lead screw is provided with a turning block for rotating the lead screw.

[0012] Furthermore, the connecting frame is provided with an inner sleeve, the connecting sleeve is sandwiched between the inner wall of the connecting frame and the outer wall of the inner sleeve, and the connecting frame and the inner sleeve are fixedly connected by rivets.

[0013] Furthermore, the connecting sleeve is provided with a flame-retardant layer, a heat-insulating layer, and a silicone layer from the outside to the inside.

[0014] Compared with the prior art, this utility model provides a fireproof and flame-retardant silicone connector, which has the following beneficial effects: This fire-retardant silicone connector is rotatably connected to the mounting frame and the connecting frame, and the connector is rotatably engaged with the mounting frame. When the connecting frame is laterally displaced (the connecting sleeve tilts), the connecting rod can automatically adapt to the tilt direction, avoiding damage to the connecting rod due to forced force and ensuring that the connecting rod adapts in the dynamic displacement scenario of the connecting sleeve.

[0015] By utilizing a design where the length of the connecting rod is greater than the spacing between the through holes on both sides of the connector, and combined with a limiting block whose size is greater than the diameter of the through hole, the maximum stretching distance on both sides of the connecting sleeve can be effectively limited, preventing the connecting sleeve from tearing or being damaged due to excessive stretching. This improves the stability of the connecting sleeve in use and significantly extends its service life. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the first embodiment of the present utility model; Figure 2 This is a three-dimensional structural diagram of the second embodiment of the present utility model; Figure 3 This is a cross-sectional view of the second embodiment of the present invention; Figure 4 This is a three-dimensional structural diagram of the present invention, wherein the inner sleeve is detached from the connecting frame; Figure 5 This is an exploded three-dimensional structural diagram showing the assembly of the mounting bracket and connector of this utility model. Figure 6 This is a three-dimensional structural diagram of the connection between the lead screw and the limiting block in the second embodiment of this utility model; Figure 7 This is a schematic diagram of the layered structure of the connecting sleeve of this utility model; Figure 8 This utility model Figure 2 A partially enlarged structural diagram of point A shown in the image; Figure 9 This utility model Figure 3 The diagram shows a partially enlarged structural schematic at point B.

[0017] In the diagram: 1. Connecting sleeve; 2. Connecting frame; 3. Connecting pin; 4. Mounting bracket; 5. Connecting piece; 6. Connecting shaft; 7. Mounting hole one; 8. Mounting hole two; 9. Through hole; 10. Connecting rod; 11. Limiting block; 12. Anti-detachment block; 13. Mounting groove; 14. Lead screw; 15. Slide groove; 16. Sliding block; 17. Connecting block; 18. Tightening block; 19. Inner sleeve; 101. Flame retardant layer; 102. Heat insulation layer; 103. Silicone layer. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-3 This utility model discloses a fireproof and flame-retardant silicone connector, comprising a connecting sleeve 1, with connecting frames 2 respectively installed at both ends of the connecting sleeve 1. The two connecting frames 2 are symmetrically distributed, and the connecting frames 2 provide a stable foundation for installation. Figure 5 As shown, each connecting frame 2 (which can be on the outer wall or the inner wall) is equipped with a mounting bracket 4 in a rotatable assembly manner. A connecting pin 3 is fixedly installed on the connecting frame 2. The mounting bracket 4 has a mounting hole 7 that matches the connecting pin 3. Alternatively, the connecting pin 3 is set on the mounting bracket 4, and the connecting frame 2 has a mounting hole 7 for the connecting pin 3 to be installed. Through the cooperation of the connecting pin 3 and the mounting hole 7, the mounting bracket 4 can rotate with the axis of the connecting pin 3 as the rotation axis. The mounting bracket 4 and the connecting frame 2 can also adopt other rotatable connection methods.

[0020] Based on the rotation of the mounting bracket 4, a connector 5 is further assembled. The connector 5 is preferably a shaft structure, and the connector 5 and the mounting bracket 4 are also rotatably connected. The middle of the connector 5 is provided with a connecting shaft 6 protruding to both sides. The mounting bracket 4 is provided with a second mounting hole 8 that matches the connecting shaft 6. Alternatively, the connecting shaft 6 is provided on the mounting bracket 4, and the middle of the connector 5 is provided with a second mounting hole 8 for the connecting shaft 6 to be installed. Through the cooperation between the connecting shaft 6 and the second mounting hole 8, the connector 5 can rotate on the mounting bracket 4 about the axis of the connecting shaft 6. Other rotatable connection methods can also be used between the connector 5 and the mounting bracket 4.

[0021] The connector 5 has a through hole 9. The through holes 9 on both sides of the connector 5 must be coaxially aligned. The connecting rod 10 is installed through the through holes 9 on both sides of the connector 5. The diameter of the through hole 9 is larger than the diameter of the connecting rod 10. The overall length of the connecting rod 10 is designed to be greater than the distance between the through holes 9 on both sides, allowing for a reasonable stroke for the stretching movement of the connecting frame 2. Simultaneously, fixed limiting blocks 11 are provided at both ends of the connecting rod 10. The outer dimensions of the limiting blocks 11 are larger than the diameter of the through holes 9 on the connector 5, effectively preventing the connecting rod 10 from coming out of the through holes 9 and ensuring the stability of the component connecting rod 10.

[0022] When the connecting frames 2 on both sides are stretched or misaligned by external force, the mounting bracket 4 and the connector 5 will move synchronously along the stretching direction. At this time, the connecting rod 10 will move synchronously with the connector 5 along the axis of the through hole 9. The limiting blocks 11 at both ends of the connecting rod 10 will effectively limit the movement stroke: when the connecting frame 2 is stretched to the point where the limiting block 11 abuts against the outer wall of the connector 5, the connecting frame 2 can no longer be stretched. Through this design, the distance between the limiting blocks 11 on both sides of the connecting rod 10 directly determines the maximum stretching distance of the connecting frames 2 on both sides, thereby preventing the connecting sleeve 1 from tearing, breaking or other damage due to excessive stretching, ensuring the long-term stable operation of the connecting sleeve 1, and guaranteeing the service life of the connecting sleeve 1.

[0023] The spacing between the limiting blocks 11 on both sides of the connecting rod 10 is adjustable to adjust the longest distance of the connecting sleeve 1 to pull the rope. The adjustment method is described in detail below through two specific embodiments. Other equivalent adjustment structures can also be used in actual applications, all of which are within the protection scope of this design.

[0024] Example 1, as Figure 1As shown, both outer walls of the connecting rod 10 are machined with external threads, and the inner surface of the limiting block 11 has a threaded hole that matches the external threads. The limiting block 11 is connected to the connecting rod 10 through a threaded connection. The threaded connection allows the limiting block 11 to move freely along the axis of the connecting rod 10. By rotating the limiting block 11, the distance between the two limiting blocks 11 can be adjusted, thereby flexibly adjusting the protection range of the connecting sleeve 1. A nut can also be threaded onto the external threads of the connecting rod 10 to further lock the position of the limiting block 11 and prevent accidental rotation and displacement of the limiting block 11.

[0025] To prevent the limiting block 11 from accidentally detaching from the end of the connecting rod 10 during adjustment or long-term use, anti-detachment blocks 12 are fixedly installed at both ends of the connecting rod 10. The anti-detachment block 12 is an integral structure with the connecting rod 10 or is fastened by a fixed connection. Its external dimensions are larger than the diameter of the threaded hole on the limiting block 11. When the limiting block 11 moves towards the end of the connecting rod 10, the anti-detachment block 12 will abut against the limiting block 11, effectively preventing the limiting block 11 from continuing to move and detaching from the connecting rod 10.

[0026] The limiting block 11 can be designed in two ways: one is to set the limiting block 11 as a regular polygon (such as a regular hexagon or a regular octagon), and the polygonal structure makes it easy to rotate and adjust the limiting block 11 with the help of tools; the other is to set anti-slip texture on the outer wall of the limiting block 11, which increases the friction between the hand and the limiting block 11, improves the stability when operating by hand, and also makes it easy to turn the limiting block 11.

[0027] Second embodiment, such as Figure 2-3 As shown in Figures 8-9, the connecting rod 10 has an installation groove 13 inside along its axial direction. A bidirectional lead screw 14 is installed in the installation groove 13. Alternatively, opposite lead screws 14 can be installed on both sides of the installation groove 13. The lead screws 14 are rotatably connected to the connecting rod 10 through bearings. Other methods can also be used to rotatably connect the lead screws 14 to the connecting rod 10 to ensure that the lead screws 14 can rotate flexibly in the installation groove 13 without axial displacement.

[0028] To achieve the transmission connection, a long, narrow groove 15 is provided on the outer wall of the connecting rod 10. The groove 15 extends along the axial direction of the connecting rod 10 and is connected to the internal mounting groove 13, forming a channel that runs through the inside and outside. Figure 6 As shown, a slider 16 is fitted into the mounting groove 13. The slider 16 has a threaded hole inside that matches the external thread of the lead screw 14. The slider 16 is fitted onto the lead screw 14 through threaded engagement. When the lead screw 14 rotates, the slider 16 can move linearly along the axis of the lead screw 14.

[0029] The limiting block 11 is assembled on the outside of the connecting rod 10. It is fixedly connected to the internal slider 16 through the connecting block 17. The connecting block 17 is set through the slide groove 15 and forms a sliding fit with the slide groove 15. When the slider 16 moves along the lead screw 14, the connecting block 17 will slide synchronously along the slide groove 15, thereby driving the external limiting block 11 to move smoothly along the axis of the connecting rod 10.

[0030] To facilitate the rotation of the lead screw 14, a screw-turning block 18 is provided at the end of the lead screw 14. The screw-turning block 18 can be a regular hexagon, slotted, or cross-shaped structure that is easy to operate with tools. In use, by turning the screw-turning block 18 with a tool or by hand, the lead screw 14 can be rotated synchronously, thereby driving the slider 16, connecting block 17, and limiting block 11 to move as a whole, realizing the adjustment of the distance between the two limiting blocks 11. The operation is convenient and the adjustment accuracy is high.

[0031] like Figure 4 As shown, an inner sleeve 19 is provided inside the connecting frame 2, and an annular installation space is formed between the inner sleeve 19 and the connecting frame 2. The end of the connecting sleeve 1 is clamped in this annular space, that is, the inner wall of the connecting sleeve 1 is attached to the outer wall of the inner sleeve 19, and the outer wall is attached to the inner wall of the connecting frame 2. Through this nested structure, the connecting sleeve 1, the connecting frame 2, and the inner sleeve 19 form a stable assembly relationship, effectively dispersing the stress of the connecting sleeve 1 when it is under force, and avoiding damage caused by local stress concentration.

[0032] To further reinforce the connection between the connecting frame 2 and the inner sleeve 19 and ensure that they do not shift relative to each other, the connecting frame 2 and the inner sleeve 19 are fixedly connected by rivets. The rivets are passed sequentially through the side wall of the connecting frame 2, the connecting sleeve 1, and the side wall of the inner sleeve 19. After the rivets are pressed, the three parts are tightly fixed together, ensuring the connection strength of the overall structure. In addition to the rivets mentioned above, bolts or screws can also be used instead of rivets for fixing.

[0033] like Figure 7 As shown, the connecting sleeve 1 adopts a multi-layer composite structure design, with a flame-retardant layer 101, a heat insulation layer 102, and a silicone layer 103 arranged sequentially from the outside to the inside. The outermost flame-retardant layer 101 is mainly used to improve the fire safety performance of the connecting sleeve 1. It is made of a deformable flame-retardant material to ensure that the connecting sleeve 1 has a fire-retardant effect without affecting the overall flexibility and adaptability. For example, flame-retardant Oxford cloth or flame-retardant elastic fiber cloth can be selected as the flame-retardant layer material. The heat insulation layer 102, located in the middle layer, is used to block the transfer of external heat to the inside, avoiding the impact of high temperature on the inner contact parts or the usage environment of the connecting sleeve 1. This heat insulation layer is also made of a deformable material, specifically aerogel felt or flexible heat insulation cotton. The innermost silicone layer 103 is directly attached to the contact parts or internal parts during use. The silicone material itself has good elasticity.

[0034] In summary, this fire-retardant silicone connector, when in use, uses the connecting rod 10 in conjunction with the limiting block 11 and the connector 5 to precisely limit the stretching length of the connecting sleeve 1, as detailed below: When the two connecting frames 2 tilt at different angles due to external forces, the rotatable mounting bracket 4 on the connecting frame 2 will rotate synchronously with the tilt direction of the connecting frame 2, and the connector 5 on the mounting bracket 4 will also rotate accordingly. Through the dual rotational cooperation of the mounting bracket 4 and the connector 5, the connecting rod 10 passing through the through hole 9 of the connector 5 can automatically adjust its direction, so that the connecting rod 10 always adapts to the tilt angle of the connecting frame 2, and avoids stress caused by forced misalignment of the connecting rod 10.

[0035] At the same time, the limiting blocks 11 at both ends of the connecting rod 10 effectively limit the stretching length of the connecting sleeve 1. When the connecting sleeve 1 is stretched by external force and causes the connecting frames 2 on both sides to move away from each other, the connecting frames 2 will drive the connecting rod 10 to move synchronously through the mounting bracket 4 and the connector 5. Since the size of the limiting block 11 is larger than the diameter of the through hole 9 of the connector 5, and the distance between the limiting blocks 11 on both sides of the connecting rod 10 is preset to the maximum safe stretching range of the connecting sleeve 1, when the connecting frame 2 is stretched to the point where the limiting block 11 abuts against the outer wall of the connector 5, the connecting frame 2 can no longer move away, thereby preventing the connecting sleeve 1 from stretching further, fundamentally avoiding damage problems such as tearing and breakage of the connecting sleeve 1 due to excessive stretching.

[0036] 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 fireproof and flame-retardant silica gel connector, comprising a connecting sleeve (1), a connecting frame (2) is installed at both ends of the connecting sleeve (1), characterized in that: Each of the connecting frames (2) is equipped with a rotatable mounting bracket (4); a rotatable connector (5) is installed on the mounting bracket (4), and a through hole (9) is provided on the connector (5); a connecting rod (10) is installed through the through hole (9) of the connector (5) on both sides, the length of the connecting rod (10) is greater than the distance between the through holes (9) on both sides, and a limit block (11) is provided at both ends of the connecting rod (10); the size of the limit block (11) is greater than the diameter of the through hole (9), and the distance between the limit blocks (11) on both sides of the connecting rod (10) limits the stretching distance of the connecting frames (2) on both sides.

2. The fire and flame resistant silicone grommet of claim 1, wherein: The diameter of the through hole (9) is larger than the diameter of the connecting rod (10).

3. The fire and flame resistant silicone grommet of claim 2, wherein: The spacing between the limiting blocks (11) on both sides of the connecting rod (10) is adjustable.

4. The fire and flame resistant silicone grommet of claim 3, wherein: Both sides of the outer wall of the connecting rod (10) are provided with external threads, and the inside of the limiting block (11) is provided with a threaded hole that matches the external thread of the connecting rod (10). The limiting block (11) and the connecting rod (10) are connected by threads.

5. The fire and flame resistant silicone grommet of claim 4, wherein: Both ends of the connecting rod (10) are provided with anti-detachment blocks (12), which are used to prevent the limiting block (11) from detaching from the connecting rod (10); the limiting block (11) is arranged in the form of a regular polygon.

6. The fire-retardant silicone connector according to claim 3, characterized in that: The connecting rod (10) has an installation groove (13) inside, and a lead screw (14) is installed in the installation groove (13). The lead screw (14) is rotatably connected to the connecting rod (10). The outer wall of the connecting rod (10) has a sliding groove (15) that is connected to the installation groove (13). A slider (16) is installed in the installation groove (13). The slider (16) has a threaded hole that matches the lead screw (14) inside, and the slider (16) is connected to the lead screw (14) by a thread. The limiting block (11) is installed on the outside of the connecting rod (10). The slider (16) and the limiting block (11) are fixedly connected by a connecting block (17), and the connecting block (17) is slidably installed in the sliding groove (15).

7. The fire and flame resistant silicone grommet of claim 6, wherein: The lead screw (14) is provided with a screwing block (18) for rotating the lead screw (14).

8. The fire resistant, flame retarded silicone grommet of any of claims 1-7, wherein: The connecting frame (2) is provided with an inner sleeve (19), and the connecting sleeve (1) is sandwiched between the inner wall of the connecting frame (2) and the outer wall of the inner sleeve (19), and the connecting frame (2) and the inner sleeve (19) are fixedly connected by rivets.

9. The fire and flame resistant silicone grommet of claim 8, wherein: The connecting sleeve (1) is provided with a flame retardant layer (101), a heat insulation layer (102) and a silicone layer (103) from the outside to the inside.

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