A fire alarm cable pull-resistant connection device

Abstract

The utility model discloses a kind of fire alarm cable anti-pulling connecting devices, it is related to fire alarm cable connection field, to solve the problem that existing connecting device only fixes fire alarm cable to prevent connection from falling off, in long-term use, it can lead to fire alarm cable loosening influence electrical connection, its technical scheme main point is: including shell, shell is equipped with several through slots one, through slot one is slidably connected with sleeve, sleeve is fixedly connected with conducting block one in, conducting block one is fixedly connected with cable at the inside one side of shell, shell is equipped with several through slots two that can be exported to cable respectively, limiting member for limiting sleeve movement is equipped on sleeve, fixed part for limiting external cable is equipped on sleeve.The utility model of a kind of fire alarm cable anti-pulling connecting device can be used after long-term use of fire alarm cable, if pulling fire alarm cable occurs, sleeve will slide on shell, avoid stress accumulation at fire alarm cable joint, further avoid fire alarm cable loosening influence electrical connection.

Description

Technical Field

[0001] This utility model relates to the field of fire alarm wire connection, and more specifically, it relates to a fire alarm wire anti-pull connection device. Background Technology

[0002] Automatic fire alarm systems are key facilities for protecting life and property in modern buildings. Fire alarm circuits (commonly known as "fire alarm lines") serve as the neural network of this system, spreading throughout various areas of the building and connecting numerous field devices such as smoke detectors, heat detectors, and manual alarm buttons.

[0003] A multi-interface connection device is disclosed in patent publication number CN222530939U, including a junction box, a movable arm, and a terminal block. The junction box has a wiring groove on its inner side, and a terminal block is fixedly installed inside the wiring groove. A placement groove is opened on the top of the terminal block. The movable arm is movably installed in the wiring groove on the top of the terminal block. A sleeve is fixedly installed on the bottom of the movable arm. A movable seat is slidably installed on the bottom of the sleeve. A wire clamping seat corresponding to the placement groove is fixedly installed on the bottom of the movable seat. A limiting plate that cooperates with the movable arm is slidably installed on the top of the junction box.

[0004] The connection device in the above scheme can use the wire pressing block to press the battery core into the wire pressing groove, effectively preventing the battery core from sliding in the placement groove and having an anti-pull function, thereby avoiding connection detachment. However, this connection device can only fix the fire alarm wire to prevent connection detachment. During long-term use, the fire alarm wire will be pulled due to factors such as slight settlement or vibration of the building itself and thermal expansion and contraction of the cable, which will cause stress to accumulate at the fire alarm wire joint, eventually leading to loosening of the fire alarm wire and affecting the electrical connection.

[0005] Therefore, a new solution is needed to address this problem. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a fire alarm wire anti-pull connection device. After long-term use of the fire alarm wire, if the fire alarm wire is pulled, the sleeve will slide on the outer shell to avoid stress accumulation at the fire alarm wire joint, thereby preventing the fire alarm wire from loosening and affecting the electrical connection.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a fire alarm wire anti-pull connection device includes a housing, a plurality of through slots I are provided on the housing, a sleeve is slidably connected to the through slots I, a conductive block I is fixedly connected inside the sleeve, a cable is fixedly connected to the conductive block I on one side inside the housing, a plurality of through slots II are provided on the housing for the cable to be led out respectively, a limiting member is provided on the sleeve for limiting the movement of the sleeve, and a fixing member is provided on the sleeve for limiting the external cable.

[0008] The present invention is further configured such that: the limiting member includes a connecting plate fixedly connected between several sleeves and several springs fixedly connected to the connecting plate, and the other end of the spring is fixedly connected to the inner wall of the outer shell.

[0009] The present invention is further configured such that: the fixing component includes a second conductive block fixedly connected inside the sleeve and a bolt threadedly connected to the sleeve, and the second conductive block is fixedly connected to the first conductive block.

[0010] The present invention is further configured such that: the cable is bent inside the housing, and a partition plate is fixedly connected to the inner wall of the housing between two adjacent cables.

[0011] The present invention is further configured such that: a protective cover is fixedly connected to the outer wall of the outer shell, and the protective cover is provided with a through groove for several cables to be led out respectively.

[0012] The present invention is further provided that: an adhesive tape is fixedly connected to the protective cover.

[0013] In summary, this utility model has the following beneficial effects: after long-term use of the fire alarm line, if the fire alarm line is pulled, the sleeve will slide on the outer shell, avoiding the accumulation of stress at the fire alarm line joint, thereby preventing the fire alarm line from loosening and affecting the electrical connection. It can also separate several cables through the partition plate to prevent the cables from contacting each other and hindering the sliding of the sleeve. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 A cross-sectional view of this utility model Figure 1 ; Figure 4 A cross-sectional view of this utility model Figure 2 ; Figure 5 A cross-sectional view of this utility model Figure 3 ; Figure 6 A cross-sectional view of this utility model Figure 4 .

[0015] In the diagram: 1. Outer shell; 2. Through slot one; 3. Sleeve; 4. Conductive block one; 5. Cable; 6. Through slot two; 7. Connecting plate; 8. Spring; 9. Conductive block two; 10. Bolt; 11. Divider plate; 12. Protective cover; 13. Through slot three; 14. Adhesive tape. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0017] A fire alarm wire anti-pull connection device, such as Figures 1-6 As shown, the device includes a housing 1, on which several through slots 2 are formed. Sleeves 3 are slidably connected to the through slots 2. A conductive block 4 is fixedly connected inside the sleeve 3. A cable 5 is fixedly connected to one side of the conductive block 4 inside the housing 1. Several through slots 2 6 are formed on the housing 1 for the cables 5 to be routed out. The sleeve 3 is provided with limiting components to restrict its movement. The sleeve 3 is also provided with fixing components to restrict the movement of external cables. The limiting components include connecting plates 7 fixedly connected between the sleeves 3 and several springs 8 fixedly connected to the connecting plates 7. The other end of each spring 8 is fixedly connected to the inner wall of the housing 1. The limiting components prevent... When connecting the external cable to the sleeve 3, the sleeve 3 is in a telescopic state, which affects subsequent use. When using the connection device, several cables 5 can be connected to the fire alarm first, and then several external cables can be connected to several sleeves 3 through the fasteners. Then the outer shell 1 is fixedly connected to the fire alarm and fixed to the wall. When the fire alarm line is pulled, the external cable will pull the sleeve 3, causing the sleeve 3 to slide on the outer shell 1. At this time, the cable 5 inside the outer shell 1 will also be stretched, which can avoid the accumulation of stress at the fire alarm line joint and thus prevent the fire alarm line from loosening and affecting the electrical connection.

[0018] like Figure 1 , Figure 5 , Figure 6 As shown, the fastener includes a conductive block 2 9 fixedly connected inside the sleeve 3 and a bolt 10 threadedly connected to the sleeve 3. The conductive block 2 9 is fixedly connected to the conductive block 1 4. When it is necessary to connect the external cable to the fire alarm line, first rotate the bolt 10 to move the bolt 10 away from the bottom side of the conductive block 2 9, and then insert the external cable 5 into several sleeves 3 respectively and make the external cable 5 contact the conductive block 2 9. Then tighten the bolt 10 to make the bolt 10 contact the external cable 5 and press against the external cable 5. At this time, the external cable 5 is fixed.

[0019] like Figures 4-6 As shown, the cable 5 is bent inside the housing 1, which allows the cable 5 to have more redundancy for the sleeve 3 to slide. A partition plate 11 is fixedly connected between two adjacent cables 5 on the inner wall of the housing 1. The partition plate 11 can separate several cables 5 to prevent the cables 5 from contacting each other and hindering the sliding of the sleeve 3.

[0020] like Figures 2-3 As shown, a protective cover 12 is fixedly connected to the outer wall of the outer casing 1. The protective cover 12 has through slots 13 for several cables 5 to be led out, which can protect the external cables 5 and prevent the cables 5 from being exposed to the outside for a long time and thus aging.

[0021] like Figure 2 As shown, adhesive tape 14 is fixedly connected to the protective cover 12. After the cable 5 is connected to the fire alarm, the protective film on the adhesive tape 14 can be peeled off, and then the adhesive tape 14 can be fully contacted with the back of the fire alarm, so that the protective cover 12 and the outer shell 1 can be fixed to the back of the fire alarm.

[0022] Working principle: When using the connection device, first connect several cables 5 to the fire alarm, then rotate bolt 10 away from the bottom of conductive block 9. Next, insert the external cables 5 into several sleeves 3 and make them contact the conductive block 9. Then tighten bolt 10 to make it contact and press against the external cables 5. Then remove the protective film from the adhesive tape 14 and apply it to the back of the fire alarm, fixing the protective cover 12 and outer casing 1 to the back of the fire alarm. Finally, fix the outer casing 1 to the wall. When the fire alarm wire is pulled, the external cable will pull the sleeve 3, causing it to slide on the outer casing 1. At this time, the cable 5 inside the outer casing 1 will also be stretched, thus preventing stress accumulation at the fire alarm wire joint and preventing the fire alarm wire from loosening and affecting the electrical connection.

[0023] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A fire alarm wire anti-pull connection device, comprising a housing (1), characterized in that: The outer shell (1) has several through slots (2), and a sleeve (3) is slidably connected to the through slot (2). A conductive block (4) is fixedly connected inside the sleeve (3). A cable (5) is fixedly connected to the conductive block (4) on one side inside the outer shell (1). The outer shell (1) has several through slots (6) for the cable (5) to be led out respectively. The sleeve (3) is provided with a limiting member for restricting the movement of the sleeve (3). The sleeve (3) is provided with a fixing member for restricting the external cable (5).

2. The fire alarm wire anti-pull connection device according to claim 1, characterized in that: The limiting component includes a connecting plate (7) fixedly connected between several sleeves (3) and several springs (8) fixedly connected on the connecting plate (7), with the other end of the springs (8) fixedly connected to the inner wall of the outer shell (1).

3. The fire alarm wire anti-pull connection device according to claim 1, characterized in that: The fastener includes a conductive block two (9) fixedly connected inside the sleeve (3) and a bolt (10) threadedly connected on the sleeve (3). The conductive block two (9) is fixedly connected to the conductive block one (4).

4. The fire alarm wire anti-pull connection device according to claim 1, characterized in that: The cable (5) is bent inside the housing (1), and a partition plate (11) is fixedly connected between two adjacent cables (5) on the inner wall of the housing (1).

5. The fire alarm wire anti-pull connection device according to claim 1, characterized in that: A protective cover (12) is fixedly connected to the outer wall of the outer shell (1), and the protective cover (12) is provided with a through groove (13) for several cables (5) to be led out respectively.

6. The fire alarm wire anti-pull connection device according to claim 5, characterized in that: Adhesive tape (14) is fixedly connected to the protective cover (12).

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