Novel weak current bridge structure

Abstract

The utility model discloses a novel weak current bridge structure, which belongs to the technical field of weak current and comprises a bridge A, a mounting groove A, mounting racks, a bridge B, a mounting groove B and a lead frame, the bridge B is arranged above the bridge A, the mounting racks are fixedly mounted on the side of the bridge B and above the bridge A, the mounting grooves A are embedded in the other side of the bridge B and below the bridge A, and the mounting grooves A are embedded in the mounting racks. A mounting groove B is embedded in the middle of the lower portion of the bridge frame B, and the mounting frames are slidably arranged on the inner sides of the mounting groove A and the mounting groove B in a matched mode. The two limiting frames are pushed to slide on the inner sides of the sliding grooves, the limiting pressing plates are extruded to drive the damping telescopic rods A and the springs on the outer sides to contract, the limiting clamping blocks slide out of the limiting clamping grooves to loosen the bridge A or the bridge B, then the bridge A or the bridge B is pushed to drive the mounting grooves A or the mounting grooves B to be taken down from the outer sides of the mounting frames, and dismounting is completed. And the correct bridge frame A or bridge frame B is installed for supporting the weak electric wire, so that workers can conveniently and quickly disassemble and assemble the weak electric bridge frame.

Description

Technical Field

[0001] The utility model belongs to the technical field of weak current, in particular to a novel weak current bridge structure. Background Art

[0002] Weak current mainly refers to DC circuits, audio, video lines, network lines, telephone lines, etc. The voltage of these lines is generally within 36V. The main feature of weak current is that its processing object is mainly the transmission and control of information, and it has the characteristics of low voltage, small current, small power and high frequency.

[0003] Among them, after searching, it was found that the application number is CN202222017878.9, a strong and weak current bridge, which has a setting of a rigid partition to isolate the weak wire body and the strong wire body. Through the coordinated use of the hand-tightened slide bar, the card strip and the card slot, the rigid partition can be stably attached to the top of the second baffle bar, and the weak wire body or the strong wire body can be limited by the setting of the arc buckle and the pressure buckle; among them, the shortcomings are as follows:

[0004] When the staff uses this kind of strong and weak current bridge to support the strong and weak wires, the rigid partition isolates the weak wire body and the strong wire body. The hand-tightened sliding rod, the clamping strip and the clamping slot are used together to make the rigid partition stably fit on the top of the second baffle bar. The arc buckle and the pressure buckle limit the weak wire body or the strong wire body. When limiting the strong and weak wires, since only a single isolation is made by the rigid partition, the arc buckle connected to the spring is used to limit the support of the strong and weak wires. The arc buckle is easily vibrated by the spring to produce high flexibility, causing the strong and weak wires to loosen and fall off, resulting in collision damage, making the shock absorbing effect of this kind of strong and weak current bridge relatively poor. Utility Model Content

[0005] The purpose of the utility model is to provide a novel weak current bridge structure in order to solve the problem that the above-mentioned strong and weak current bridge has a relatively poor shock absorbing effect.

[0006] The technical solution adopted by the utility model is as follows: a new type of weak current bridge structure, including a bridge A, a mounting groove A, a mounting frame, a bridge B, the mounting groove B and a wire rack, a bridge B is arranged above the bridge A, the mounting frames are fixedly installed on the sides of the bridge B and on the top of the bridge A, the mounting groove A is embedded on the other side of the bridge B and below the bridge A, the mounting groove B is embedded in the middle of the bottom of the bridge B, and the mounting frames are slidably arranged on the inner sides of the mounting groove A and the mounting groove B, the front and rear sides of the inside of the bridge B and the front and rear sides of the inside of the bridge A are relatively arranged with wire racks, the outside of the wire rack is provided with an adjustment and limiting mechanism that can limit the branching of weak current wires of different specifications, the bridge B and the bridge A are provided with a buffering mechanism that can buffer the vibration of the weak current wires during an earthquake, and the bridge B and the bridge A are provided with a snap-on installation mechanism that is convenient for disassembly and assembly on the outside.

[0007] Among them, the card-connecting installation mechanism is composed of a limit slot, a slide slot, a limit frame, a limit block, a damping telescopic rod A and a limit pressure plate. Slide slots are embedded on both sides of the inner walls of the installation slot A and the installation slot B, and a limit frame is slidably arranged on the side of the slide slot. Limiting blocks are fixedly installed on the sides of the limit frame. Limiting slots are embedded on both sides of the installation frame. There are several limit slots, which are equidistantly arranged around, and the limit blocks are slidably arranged on the inner side of the limit slots. Damping telescopic rods A are fixedly installed on the upper and lower sides of the inner walls of the installation slots A and the installation slots B near the upper and lower sides of the limit frames, and springs are matched with the outer side of the damping telescopic rod A, and a limit pressure plate is fixedly installed on the side of the end of the damping telescopic rod A.

[0008] Among them, the adjustment and limiting mechanism is composed of a thread groove, an adjusting screw, a wire groove and a rubber pressure pad. The thread grooves are embedded on both sides of the front of the front wire rack inside the bridge frame A and the bridge frame B. The front sides of another wire rack at the rear of the bridge frame A and the bridge frame B are both provided with adjusting screws for rotation through bearings, and the adjusting screw threads are engaged and rotated on the inner side of the thread groove. Wire grooves are embedded on the opposite sides of the wire racks. There are several wire grooves, and every two are arranged in parallel at relatively equidistant distances. A rubber pressure pad is relatively fixedly installed inside the wire groove, and the rubber pressure pad is arranged in an arc shape, and springs are matched between the rubber pressure pad and the four corners of the opposite sides of the wire groove.

[0009] Among them, the buffer mechanism is composed of a damping telescopic rod B, a buffer plate, a buffer block A, a buffer block B, a buffer frame, a buffer block C and a movable rod. The damping telescopic rod B is fixedly installed at the four front corners of the wire frame, and a spring is arranged on the outside of the damping telescopic rod B. A buffer plate is fixedly installed in front of the end of the damping telescopic rod B, and a buffer block A is fixedly installed in front of the buffer plate, and the buffer block A is arranged in a semicircular shape. A buffer block B is fixedly installed inside the buffer block A, and the buffer block B is arranged in a triangular cone shape. Buffer frames are fixedly installed on the upper and lower sides of the front and rear of the inner wall of the bridge frame A and on both sides of the front and rear of the inner wall of the bridge frame B. Buffer blocks C are slidably arranged on both sides of the outer ring of the buffer frame through sliders, and springs are arranged between the buffer blocks C. Springs are arranged between both sides of the outer ring of the buffer frame and the other end of the opposite buffer block C. Movable rods are arranged on the upper and lower sides of the front of the wire frame and between the opposite buffer blocks C through rotating shafts.

[0010] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0011] 1. This new type of weak-current bridge structure is equipped with a card-connecting installation mechanism, which allows the staff to cooperate between the limit card slot, the slide slot, the limit frame, the limit card block, the damping telescopic rod A and the limit pressure plate, and use the limit pressure plate to squeeze and limit the limit frame through the damping telescopic rod A and the outer spring. The limit frame can slide freely on the inside of the limit card slot through the limit card block, which is convenient for the staff to quickly disassemble and assemble the weak-current bridge.

[0012] 2. This new type of weak-current bridge structure is equipped with an adjustment limit mechanism, which allows workers to coordinate between the thread groove, adjustment screw, wire groove and rubber pressure pad, and use the adjustment screw to freely rotate in the thread engagement inside the thread groove to adjust the spacing between the wire racks. The rubber pressure pad is deformed by the spring and squeezed to contact the surface of the weak-current wire, which allows workers to freely perform limit support treatment on weak-current wires of different specifications.

[0013] 3. This new type of weak current bridge structure is provided with a buffer mechanism, so that the staff can cooperate between the damping telescopic rod B, the buffer plate, the buffer block A, the buffer block B, the buffer frame, the buffer block C and the movable rod, and use the movable rod to drive the buffer block C to slide on the outside of the buffer frame through the rotating shaft, drive the spring between the buffer block C to expand and the springs on both sides of the buffer frame to contract, so that the expanded and contracted springs produce a reverse thrust on the buffer block C, and the buffer block A and the buffer block B at the end of the buffer plate will be continuously squeezed, and drive the damping telescopic rod B and the outer spring to repeatedly expand and contract, so as to reduce the vibration buffering of the conductor frame and improve the effect of efficient buffering and shock absorption treatment of the conductor frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1This is a schematic diagram of the three-dimensional structure of the weak current bridge of the utility model;

[0015] Figure 2 This is a schematic diagram of the front cross-sectional structure of the weak current bridge of the utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the conductor frame in the utility model;

[0017] Figure 4 For the utility model Figure 2 The enlarged schematic diagram of the structure at A in the middle;

[0018] Figure 5 For the utility model Figure 3 The enlarged schematic diagram of the structure at B in the middle;

[0019] Figure 6 For the utility model Figure 3 The enlarged structural schematic diagram of Example 2 is shown at B.

[0020] Markings in the figure: 1. Bridge A; 101. Mounting slot A; 102. Mounting frame; 103. Limiting card slot; 104. Slide slot; 105. Limiting frame; 106. Limiting card block; 107. Damping telescopic rod A; 108. Limiting pressure plate; 2. Bridge B; 201. Mounting slot B; 3. Wire rack; 301. Damping telescopic rod B; 302. Buffer plate; 303. Buffer block A; 304. Buffer block B; 305. Threaded groove; 306. Adjusting screw; 307. Wire trough; 308. Rubber pressure pad; 4. Buffer frame; 401. Buffer block C; 402. Movable rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the utility model:

[0023] Example 1: Reference Figure 1-5A novel weak-current bridge structure comprises a bridge A1, an installation groove A101, a mounting frame 102, a bridge B2, an installation groove B201 and a conductor frame 3. A bridge B2 is arranged above the bridge A1, and the mounting frames 102 are fixedly installed on the sides of the bridge B2 and on the top of the bridge A1, the mounting groove A101 is embedded on the other side of the bridge B2 and below the bridge A1, and the mounting groove B201 is embedded in the middle of the lower part of the bridge B2, and the mounting frames 102 are slidably arranged inside the mounting groove A101 and the mounting groove B201, and the conductor frames 3 are relatively arranged on the front and rear sides of both sides of the bridge B2 and the front and rear sides of the bridge A1, and the outer side of the conductor frame 3 is provided with an adjustment limit mechanism that can limit the branching of weak-current wires of different specifications, and the inside of the bridge B2 and the bridge A1 are provided with a buffer mechanism that can buffer the vibration of the weak-current wires during an earthquake, and the outer side of the bridge B2 and the bridge A1 is provided with a snap-on installation mechanism that is convenient for disassembly and assembly.

[0024] Reference Figure 1-4 , further, the clamping installation mechanism is composed of a limit slot 103, a slide slot 104, a limit frame 105, a limit block 106, a damping telescopic rod A107 and a limit pressure plate 108;

[0025] Slide grooves 104 are embedded on both sides of the inner wall of the installation groove A101 and the installation groove B201. A limit frame 105 is slidably arranged inside the slide groove 104. A limit card block 106 is fixedly installed around the side of the limit frame 105. Limit card grooves 103 are embedded on both sides of the installation frame 102. There are several limit card grooves 103, which are equidistantly arranged around, and the limit card block 106 is slidably arranged on the inner side of the limit card groove 103. Damping telescopic rods A107 are fixedly installed on the upper and lower sides of the inner walls of the installation grooves A101 and the installation grooves B201 near the upper and lower sides of the limit frame 105, and the damping telescopic rod A107 A spring is provided on the outside, and a limit pressure plate 108 is fixedly installed on the side of the end of the damping telescopic rod A107. When the staff needs to install the bridge A1 and the bridge B2 for supporting weak wires, they carry the specified number of bridges A1 and B2 to the installation site, place one of the bridges A1 above the other bridge A1, push the two limit frames 105 to slide inside the slide groove 104, squeeze the limit pressure plate 108 to drive the damping telescopic rod A107 and the outer spring to contract, and make the mounting frame 102 slide into the inner side of the mounting groove A101, while rotating and loosening the limit frame 105, so that the damping telescopic rod A107 and the outer spring After the spring pops out the limit frame 105 and drives the limit card block 106 to slide into the inner side of the relative limit card groove 103, the splicing between the two bridge frames A1 is completed, and the weak wires are passed through the wire racks 3, and the bridge frame A1 after splicing is installed on the wall by bolts. When the staff installs other bridge frames A1 and arranges the weak wires inside, if it is necessary to install the bridge frame B2 to make the weak wires turn corners, slide the installation groove B201 under one of the bridge frames B2 onto the installation frame 102 above the bridge frame A1 and perform the limit installation treatment in the same way to complete the installation of the corner between the bridge frame A1 and the bridge frame B2. If the staff finds that one of the bridge frames B2 or A1 is installed incorrectly and needs to be removed, push the two limit frames 105 to slide inside the slide groove 104, squeeze the limit pressure plate 108 to drive the damping telescopic rod A107 and the outer spring to contract, so that the limit block 106 slides out of the limit slot 103 to release the bridge frame A1 or B2, and then push the bridge frame A1 or B2 to drive the installation slot A101 or B201 to be removed from the outside of the installation frame 102 to complete the disassembly, and install the correct bridge frame A1 or B2 to support the weak wires, which is convenient for the staff to quickly disassemble and assemble the weak current bridge frame.

[0026] Reference Figure 2 , 3 , further, the adjustment limit mechanism is composed of a thread groove 305, an adjustment screw 306, a wire groove 307 and a rubber pressure pad 308;

[0027] Thread grooves 305 are embedded on both sides of the front of the wire rack 3 in the front of the bridge A1 and the bridge B2. Adjustment screws 306 are rotatably arranged on both sides of the front of the other wire rack 3 in the rear of the bridge A1 and the bridge B2 through bearings, and the adjustment screws 306 are rotatably arranged on the inner side of the thread groove 305. Wire grooves 307 are embedded on the opposite sides of the wire rack 3. There are several wire grooves 307, and every two of them are arranged in parallel at a relatively equidistant distance. Rubber pressure pads 308 are relatively fixedly installed inside the wire grooves 307, and the rubber pressure pads 308 are arranged in an arc shape, and springs are matched between the four corners of the rubber pressure pads 308 and the opposite sides of the wire grooves 307. When the staff first adjusts two of the bridges A1 or the bridge B2 and the bridge After the bridge A1 is installed between the bridges, when it is necessary to arrange the weak wires inside the connected bridge A1 and bridge B2, the staff will place the weak wires between the wire grooves 307 between the opposite conductor racks 3, and at the same time, turn the two adjusting screws 306 to rotate in the threaded engagement inside the thread grooves 305, driving the two conductor racks 3 to shrink in opposite directions, so that the rubber pressure pads 308 are squeezed and contacted with the weak wires through the spring contraction deformation, and the weak wires are limited between the inner sides of the wire grooves 307. After the limit support for the weak wires is completed, the staff will install other bridges B2 and bridge A1 in the same way, and limit the weak wires at the same time, so that the staff can freely limit and support weak wires of different specifications.

[0028] Reference Figure 3 , 5 , further, the buffer mechanism is composed of a damping telescopic rod B301, a buffer plate 302, a buffer block A303, a buffer block B304, a buffer frame 4, a buffer block C401 and a movable rod 402;

[0029] A damping telescopic rod B301 is fixedly installed at the four front corners of the wire rack 3, and a spring is provided on the outside of the damping telescopic rod B301. A buffer plate 302 is fixedly installed in front of the end of the damping telescopic rod B301, and a buffer block A303 is fixedly installed in front of the buffer plate 302, and the buffer block A303 is arranged in a semicircular shape. A buffer block B304 is fixedly installed inside the buffer block A303, and the buffer block B304 is arranged in a triangular cone shape. Buffer racks 4 are fixedly installed at the upper and lower parts of the front and rear of the inner wall of the bridge A1 and at the front and rear sides of the inner wall of the bridge B2. Buffer blocks C401 are slidably provided on both sides of the outer ring of the buffer rack 4 through sliders, and springs are provided between the buffer blocks C401. Springs are provided between both sides of the outer ring of the buffer rack 4 and the other end of the opposite buffer block C401. The upper and lower parts of the front sides of the wire rack 3 and the opposite buffer blocks C401 are all arranged to rotate through a rotating shaft. With movable rod 402, when the staff completes the installation of the weak current bridge and uses it for long-term support of the weak electric wires, if an earthquake occurs in the outside world and causes vibration to the conductor rack 3, the conductor rack 3 will repeatedly push the movable rod 402 through the rotating shaft, driving the buffer block C401 to slide on the outside of the buffer rack 4, driving the spring between the buffer block C401 to expand and the springs on both sides of the buffer rack 4 to contract, so that the expanded and contracted springs produce a reverse thrust on the buffer block C401, while weakening the vibration buffering of the conductor rack 3, the buffer block A303 and the buffer block B304 at the end of the buffer plate 302 will be continuously squeezed, and drive the damping telescopic rod B301 and the outer spring to repeatedly expand and contract, performing secondary shock-absorbing and buffering treatment on the conductor rack 3, avoiding the weak electric wire from being vibrated and colliding with the inside of the bridge rack A1 and the bridge rack B2, causing damage to the outer skin of the weak electric wire, and improving the effect of efficient buffering and shock-absorbing treatment of the conductor rack 3. Example

[0030] like Figure 5 , 6 As shown, in addition to the embodiment in which a buffer block A303 is fixedly installed in front of the buffer plate 302, and the buffer block A303 is arranged in a semicircular shape, a buffer block B304 is fixedly installed inside the buffer block A303, and the buffer block B304 is arranged in a triangular cone shape, there is another implementation mode, in which a buffer block A303 is fixedly installed in front of the buffer plate 302, and the buffer block A303 is arranged in a semicircular shape, a buffer block B304 is fixedly installed inside the buffer block A303, and the buffer block B304 is arranged in a semicircular shape. When the buffer block A303 and the buffer block B304 at the end of the buffer plate 302 are continuously squeezed, and drive the damping telescopic rod B301 and the outer spring to repeatedly expand and contract, and perform secondary shock absorbing and buffering treatment on the wire rack 3, the semicircular buffer block B304 and the buffer block A303 can disperse the pressure to the surroundings to avoid pressure concentration at one point, and perform more efficient buffering and shock absorbing treatment on the wire rack 3. Compared with the first implementation mode, the buffering effect is better.

[0031] Working principle: First, when the staff needs to install the bridge A1 and bridge B2 for supporting weak wires, they carry the specified number of bridges A1 and B2 to the installation site, place one of the bridges A1 above the other bridge A1, push the two limit frames 105 to slide inside the slide groove 104, squeeze the limit pressure plate 108 to drive the damping telescopic rod A107 and the outer spring to contract, and then make the installation frame 102 slide into the inside of the installation groove A101. At the same time, rotate and loosen the limit frame 105, so that the damping telescopic rod A107 and the outer spring pop out. The limit frame 105 drives the limit block 106 to slide into the inside of the relative limit card groove 103. After completing the splicing between the two bridges A1, the staff will place the weak wires on the relative side. After the wire racks 3 are between the wire grooves 307, the two adjusting screws 306 are simultaneously screwed to rotate in the inner threaded grooves 305, driving the two wire racks 3 to shrink in opposite directions, so that the rubber pressure pads 308 are squeezed and contacted with the weak wires through the spring contraction deformation, and the weak wires are limited between the inner sides of the wire grooves 307. After the limited support for the weak wires is completed, the bridge A1 after the splicing of the bridge A1 is installed on the wall by bolts. When the staff installs other bridges A1 and arranges the weak wires inside, if it is necessary to install a bridge B2 to make the weak wires turn corners, slide the installation groove B201 below one of the bridges B2 on the installation frame 102 above the bridge A1 and perform the limited installation treatment in the same way to complete the support. The corner between bridge frame A1 and bridge frame B2 is installed, and the weak wire is limited and supported in the same way. Then, if the staff finds that the installation is wrong when installing one of the bridge frames B2 or bridge frame A1 and needs to be removed, push the two limit frames 105 to slide on the inside of the slide groove 104, squeeze the limit pressure plate 108 to drive the damping telescopic rod A107 and the outer spring to contract, so that the limit block 106 slides out of the limit card groove 103 to release the bridge frame A1 or bridge frame B2, push the bridge frame A1 or bridge frame B2 to drive the installation groove A101 or the installation groove B201 to be removed from the outside of the installation frame 102, complete the disassembly, and install the correct bridge frame A1 or bridge frame B2 to support the weak wires. Finally, the weak current bridge frame is installed and the weak wires are During long-term support use, if an earthquake occurs in the outside world and causes vibration to the conductor rack 3, the conductor rack 3 will repeatedly push the movable rod 402 through the rotating shaft, driving the buffer block C401 to slide on the outside of the buffer rack 4, driving the spring between the buffer block C401 to expand and the springs on both sides of the buffer rack 4 to contract, so that the expanded and contracted springs produce a reverse thrust on the buffer block C401, while weakening the vibration buffering of the conductor rack 3, the buffer block A303 and the buffer block B304 at the end of the buffer plate 302 will be continuously squeezed, and drive the damping telescopic rod B301 and the outer spring to repeatedly expand and contract, performing secondary shock-absorbing and buffering treatment on the conductor rack 3, to prevent the weak wires from being vibrated and colliding with the inside of the bridge frame A1 and the bridge frame B2, causing damage to the outer skin of the weak wires.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel weak current bridge structure, comprising a bridge A (1), a mounting groove A (101), a mounting frame (102), a bridge B (2), a mounting groove B (201) and a conductor frame (3), wherein the bridge B (2) is arranged above the bridge A (1), the mounting frame (102) is fixedly installed on the side of the bridge B (2) and above the bridge A (1), the mounting groove A (101) is embedded on the other side of the bridge B (2) and below the bridge A (1), the mounting groove B (201) is embedded in the middle of the bottom of the bridge B (2), and the mounting frame (102) is slidably arranged on the inner side of the mounting groove A (101) and the mounting groove B (201), the conductor frames (3) are relatively arranged on the front and rear sides of the inside of the bridge B (2) and the front and rear sides of the inside of the bridge A (1), and the characteristics are: The outer side of the conductor rack (3) is provided with an adjustable limit mechanism capable of limiting the position and branching of weak electric wires of different specifications; the inner sides of the bridge frame B (2) and the bridge frame A (1) are provided with a buffer mechanism capable of buffering the vibration of the weak electric wires during an earthquake; the outer sides of the bridge frame B (2) and the bridge frame A (1) are provided with a snap-on installation mechanism for easy disassembly and assembly.

2. A novel weak current bridge structure as claimed in claim 1, characterized in that: The clamping installation mechanism is composed of a limit clamping slot (103), a slide slot (104), a limit frame (105), a limit clamping block (106), a damping telescopic rod A (107) and a limit pressing plate (108); Slide grooves (104) are embedded on both sides of the inner walls of the installation grooves A (101) and the installation grooves B (201); a limit frame (105) is slidably arranged on the side of the slide grooves (104); a limit clamping block (106) is fixedly installed around the side of the limit frame (105); a limit clamping groove (103) is embedded on both sides of the installation frame (102); and the limit clamping block (106) is slidably arranged on the inner side of the limit clamping groove (103); damping telescopic rods A (107) are fixedly installed on the upper and lower sides of the inner walls of the installation grooves A (101) and the installation grooves B (201) near the upper and lower sides of the limit frame (105); a spring is matched on the outer side of the damping telescopic rod A (107); and a limit pressing plate (108) is fixedly installed on the side of the end of the damping telescopic rod A (107).

3. A novel weak current bridge structure as claimed in claim 1, characterized in that: The adjustment and limiting mechanism is composed of a thread groove (305), an adjustment screw rod (306), a wire groove (307) and a rubber pressure pad (308); The front sides of the wire rack (3) in the front of the bridge frame A (1) and the bridge frame B (2) are embedded with thread grooves (305), and the front sides of another wire rack (3) in the rear of the bridge frame A (1) and the bridge frame B (2) are both rotatably provided with adjustment screws (306) through bearings, and the adjustment screws (306) are rotatably provided inside the thread groove (305), and the opposite surface of the wire rack (3) is embedded with a wire groove (307), and a rubber pressure pad (308) is relatively fixedly installed inside the wire groove (307), and springs are matched between the rubber pressure pad (308) and the four corners of the opposite surface of the wire groove (307).

4. A novel weak current bridge structure as claimed in claim 1, characterized in that: The buffer mechanism is composed of a damping telescopic rod B (301), a buffer plate (302), a buffer block A (303), a buffer block B (304), a buffer frame (4), a buffer block C (401) and a movable rod (402); A damping telescopic rod B (301) is fixedly mounted on each of the four front corners of the wire rack (3), and a spring is matched with the outer side of the damping telescopic rod B (301). A buffer plate (302) is fixedly mounted on the front side of the end of the damping telescopic rod B (301), and a buffer block A (303) is fixedly mounted on the front side of the buffer plate (302). A buffer block B (304) is fixedly mounted inside the buffer block A (303). A buffer rack (4) is fixedly mounted on the upper and lower sides of the front and rear sides of the inner wall of the bridge frame A (1) and on both sides of the front and rear sides of the inner wall of the bridge frame B (2). Buffer blocks C (401) are slidably mounted on both sides of the outer ring of the buffer rack (4) through sliders, and springs are matched with each other between the buffer blocks C (401). A spring is matched with each other between both sides of the outer ring of the buffer rack (4) and the other end of the buffer block C (401) opposite thereto. A movable rod (402) is rotatably mounted on both sides of the front of the wire rack (3) and between the buffer blocks C (401) opposite thereto through a rotating shaft.

5. A novel weak current bridge structure as claimed in claim 2, characterized in that: There are a plurality of limit slots (103), which are arranged equidistantly around each other.

6. A novel weak current bridge structure as claimed in claim 3, characterized in that: There are a plurality of wire grooves (307), and every two of them are arranged in parallel at a relatively equal distance, and the rubber pressure pad (308) is arranged in an arc shape.

7. A novel weak current bridge structure as claimed in claim 4, characterized in that: The buffer block A (303) is arranged in a semicircular shape, and the buffer block B (304) is arranged in a triangular cone shape.

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