A screwless cable mounting structure for fire emergency lighting fixtures

Abstract

This invention discloses a screwless cable installation structure for fire emergency lighting fixtures, comprising a cable body and a mounting plate located on the lighting fixture. An injection-molded block for mounting on the mounting plate is fixedly connected to the outer surface of the cable body. The injection-molded block includes a contact block and a positioning block, with a locking block between the contact block and the positioning block. An injection-molded block arranged in a number seven shape is injection-molded onto the surface of the cable body, allowing the cable body to be bent. The positioning block and the through hole in the injection-molded block are matched; when the positioning block passes through the through hole and rotates 90°, the positioning block and the through hole are staggered, thus fixing the cable. This method of cable installation not only reduces screw production but also makes assembly more convenient, while meeting the tensile and thrust requirements of lighting fixture cables in GB17945-2010.

Description

Technical Field

[0001] This invention relates to the field of cable installation technology, specifically to a screwless cable installation structure for fire emergency lighting fixtures. Background Technology

[0002] With the rapid development of evacuation guidance systems, the requirements for the stability, manufacturability, and product quality of evacuation guidance structures are becoming increasingly stringent. The structural reliability of the cables after installation during the production of evacuation indicator lights is crucial. Traditionally, evacuation indicator light cable assembly uses screws and structural components to meet the national standards for the tensile and thrust forces of lighting cables. However, in actual production and use, the screw installation process involves many steps, is complex, and has a long production cycle, which greatly increases production costs. Summary of the Invention

[0003] The purpose of this invention is to provide a screwless cable installation structure for fire emergency lighting fixtures. A number-seven shaped injection block is injection molded on the surface of the cable body, which allows the cable body to be bent. When the positioning block passes through the through hole and rotates 90°, the cable can be fixed. This method of cable installation not only reduces the production of screws but also makes the assembly method more convenient, while meeting the requirements of GB17945-2010 for the tensile and thrust forces of lighting fixture cables.

[0004] The objective of this invention can be achieved through the following technical solutions:

[0005] A screwless cable mounting structure for fire emergency lighting fixtures includes a cable body and a mounting plate located on the lighting fixture. An injection-molded block for mounting on the mounting plate is fixedly connected to the outer surface of the cable body. The injection-molded block includes a contact block and a positioning block. A locking block is provided between the contact block and the positioning block. One side of the contact block contacts one side of the mounting plate. The contact block is used to support the cable body. The cable body is arranged in the shape of the number "7". A through hole adapted to the locking block is opened on one side of the mounting plate.

[0006] As a further embodiment of the present invention: limit holes are provided on both sides of the through hole on the mounting plate, and a connecting component for positioning is provided inside the injection block.

[0007] As a further embodiment of the present invention: the connecting assembly includes two placement grooves located on the limiting block and two sliding grooves located on the contact block. The sliding grooves have sliding cavities inside. A second spring is fixedly connected to one side of the inner wall of the placement groove. One end of the second spring is fixedly connected to a limiting block adapted to the sliding groove. One side of the limiting block is set as an inclined surface.

[0008] As a further aspect of the present invention: a limiting rod is slidably connected to the inner surface of the sliding groove, a sliding plate is fixedly connected to the surface of the limiting rod, a first spring is sleeved on the outer surface of the limiting rod, one end of the first spring is fixedly connected to one end of the sliding plate, and the inner wall of one end of the sliding groove is set as an arc surface.

[0009] The beneficial effects of this invention are:

[0010] (1) In this invention, a number seven-shaped injection block is injection molded on the surface of the cable body, which can bend the cable body. With the cooperation between the positioning block and the through hole in the injection block, when the positioning block passes through the through hole and rotates 90°, the positioning block and the through hole can be staggered, thereby fixing the cable. This method of cable installation not only reduces the production of screws, but also makes the assembly method more convenient, and can meet the requirements of tensile and thrust forces of lighting cables in GB17945-2010.

[0011] (2) In this invention, by setting a sliding limit rod in the contact block and a sliding limit block in the positioning block, when the limit block is located inside the limit hole, the placement groove and the sliding groove, the position of the injection block can be fixed to further ensure the stability of the cable. Attached Figure Description

[0012] The invention will now be further described with reference to the accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the installation of the cable body in this invention;

[0014] Figure 2 This is a half-sectional schematic diagram of the mounting plate in this invention;

[0015] Figure 3 This is a side view of the external structure of the injection-molded block in this invention;

[0016] Figure 4 This is a three-dimensional view of the external structure of the injection-molded block in this invention;

[0017] Figure 5 This is a partial structural cross-sectional view of the injection-molded block in this invention.

[0018] In the diagram: 1. Cable body; 2. Injection block; 21. Contact block; 22. Locking block; 23. Positioning block; 3. Connecting assembly; 30. Placement slot; 31. Limiting block; 32. Sliding groove; 33. Sliding cavity; 34. Limiting rod; 35. Sliding plate; 36. First spring; 37. Second spring; 4. Through hole; 5. Limiting hole; 6. Mounting plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-5 As shown, the present invention is a screwless cable installation structure for fire emergency lighting fixtures, including a cable body 1 and a mounting plate 6 located on the lighting fixture. The outer surface of the cable body 1 is fixedly connected to an injection molding block 2 for mounting on the mounting plate 6. The injection molding block 2 includes a contact block 21 and a positioning block 23. A locking block 22 is provided between the contact block 21 and the positioning block 23. The locking block 22 has a circular cross-section. One side of the contact block 21 contacts one side of the mounting plate 6. The contact block 21 is used to support the cable body 1. The cable body 1 is arranged in the shape of the number "seven". One side of the mounting plate 6 has a through hole 4 that matches the locking block 22. The through hole 4 is elliptical with straight edges. After the positioning block 23 is inserted into the through hole 4, the injection molding block 2 is rotated 90° so that the through hole 4 and the positioning block 23 are arranged in a cross shape, thereby causing the injection molding block 2 to fall off the mounting plate 6.

[0021] In order to make the installation of the cable body 1 more stable, the mounting plate 6 has limit holes 5 on both sides of the through hole 4, and the injection block 2 is provided with a connecting component 3 for positioning.

[0022] The connecting component 3 includes two placement slots 30 on the positioning block 23 and two sliding slots 32 on the contact block 21. A sliding cavity 33 is formed inside each sliding slot 32. A second spring 37 is fixedly connected to one side of the inner wall of each placement slot 30. One end of the second spring 37 is fixedly connected to a limiting block 31 adapted to the sliding slot 32. One side of the limiting block 31 is set as an inclined surface. Due to the inclined surface of the limiting block 31, when the cable is rotated, the limiting block 31 contacts the inner wall of the through hole 4, at which time the limiting block 31 will slide into the interior of the placement slot 30. A limiting rod 34 is slidably connected to the inner surface of the sliding slot 32. A sliding plate 35 is fixedly connected to the surface of the limiting rod 34. A first spring 36 is sleeved on the outer surface of the limiting rod 34. One end of the first spring 36 is fixedly connected to one end of the sliding plate 35. The inner wall of one end of the sliding slot 32 is set as an arc surface, which facilitates pressing down the limiting rod 34, thereby pushing the limiting block 31 out of the interior of the sliding slot 32.

[0023] The working principle of this invention is as follows: First, pinch the contact block 21 so that one end of the cable body 1 and the positioning block 23 pass through the through hole 4 together. Then, press the limiting rod 34 in the sliding groove 32. The limiting block 31 is pushed out of the sliding groove 32 through the bottom end of the limiting rod 34. At the same time, the sliding plate 35 slides downward on the inner surface of the sliding cavity 33, and the first spring 36 is in a compressed state. At this time, rotate the contact block 21 by 90°. Since one side of the limiting block 31 is set as an inclined surface, the limiting block 31 retracts into the placement groove 30 after contacting the inner wall of the through hole 4, and compresses the second spring 37 until the limiting block 31 is above the limiting hole 5. Then, release the limiting rod 34. At this time, under the push of the second spring 37, the limiting block 31 passes through the limiting hole 5 and slides into the sliding groove 32. At this time, the positioning block 23 and the through hole 4 are staggered, thereby fixing the cable body 1.

[0024] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A screwless cable mounting structure for fire emergency luminaire comprising a cable body (1) and a mounting plate (6) on the luminaire, characterized in that, The outer surface of the cable body (1) is fixedly connected with an injection block (2) for mounting on a mounting plate (6), the injection block (2) comprises a contact block (21) and a positioning block (23), a clamping block (22) is arranged between the contact block (21) and the positioning block (23), one side of the contact block (21) is in contact with one side of the mounting plate (6), the contact block (21) is used for supporting the cable body (1), the cable body (1) is arranged in the shape of the number "7", and a through hole (4) that is matched with the clamping block (22) is arranged through one side of the mounting plate (6); An inner part of the injection block (2) is provided with a connecting assembly (3) for positioning; The connecting assembly (3) comprises two placing grooves (30) on the positioning block (23) and two sliding grooves (32) on the contact block (21), a sliding cavity (33) is arranged in the inner part of the sliding groove (32), one side of the inner wall of the placing groove (30) is fixedly connected with a second spring (37), one end of the second spring (37) is fixedly connected with a limiting block (31) matched with the sliding groove (32), and one side of the limiting block (31) is arranged as an inclined surface; The inner surface of the sliding groove (32) is slidably connected with a limiting rod (34), the surface of the limiting rod (34) is fixedly connected with a sliding plate (35), and the outer surface of the limiting rod (34) is sleeved with a first spring (36), one end of the first spring (36) is fixedly connected with one end of the sliding plate (35).

2. A screwless cable mounting structure for a fire emergency luminaire according to claim 1, characterized in that, Limiting holes (5) are arranged through both sides of the through hole (4) on the mounting plate (6).

3. A screwless cable mounting structure for a fire emergency luminaire according to claim 1, wherein, The inner wall of one end of the sliding groove (32) is arranged as a circular arc surface.

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