Fire-fighting switch power supply with stable connection

Abstract

The utility model discloses a fire-fighting switch power supply with stable connection, which belongs to the field of switch power supplies and comprises a switch power supply body. After a connecting wire passes through a space between a movable plate and a fixed plate in a mechanism frame and is connected with a wiring terminal at the front end of a switching power supply body, the connecting wire is placed in an arc-shaped wire clamping opening formed in the top surface of the fixed plate, and a knob is rotated to drive a bidirectional screw rod to rotate through a first rotating rod; the connecting rods are forced to incline in the process that the symmetrical movable blocks move relatively along the bidirectional screw rod through the screw holes, and the movable plate is pushed downwards in the process that the degree of the included angle formed between the bilaterally symmetrical connecting rods is gradually reduced; the arc-shaped wire clamping openings are formed in the opposite surface walls of the movable plate and the fixed plate, so that the problem that the connecting wire is loosened and falls off after being connected with the wiring terminal can be effectively prevented.

Description

Technical Field

[0001] The utility model relates to the field of switching power supplies, and particularly relates to a switching power supply with stable connection for fire protection. Background Technique

[0002] A fire protection switching power supply is a power supply device specifically designed for fire protection systems. It can convert the input alternating current (AC) into a stable direct current (DC) output by controlling a switching tube through a high-frequency PWM (pulse width modulation) signal to meet the power requirements of fire protection equipment in emergency situations. This power supply has the characteristics of high efficiency, stability, and reliability, and is usually equipped with various protection measures such as overvoltage protection, overcurrent protection, overload protection, short-circuit protection, and over-temperature protection to ensure that it can continuously and stably provide power support for fire protection equipment in emergencies such as fires. Fire protection switching power supplies are widely used in fire alarm systems, fire extinguishing systems, smoke exhaust systems, and emergency lighting and other fire protection equipment, and are one of the important equipment for ensuring fire safety.

[0003] In the prior art, during the actual use of the switching power supply, the equipment connection wire is mainly connected to the wiring terminal by screwing the screw on the wiring terminal to squeeze the wiring end of the equipment connection wire. However, the stability of this connection method is poor. When the connection wire is pulled by an external force, the connection wire will loosen and fall off from the wiring terminal, resulting in poor line contact or disconnection, affecting the use of the switching power supply. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a switching power supply with stable connection for fire protection, which can effectively solve the problems in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A switching power supply with stable connection for fire protection includes a switching power supply body. A wiring terminal is provided at the front end of the switching power supply body. An anti-loosening mechanism is provided at the front end of the wiring terminal. The anti-loosening mechanism includes a mechanism frame, a bidirectional screw, movable blocks, movable plates, fixed blocks, connecting rods, and fixing plates. The mechanism frame is fixedly connected to the front end of the switching power supply body through front plates on both sides of the rear wall. The bidirectional screw is movably connected to the upper part inside the mechanism frame through first rotating rods at both ends. The movable blocks are movably connected to the bidirectional screw through screw holes on the side walls. The movable plates are movably connected to the inside of the mechanism frame through second sliders on both sides. Fixed blocks that are symmetrically corresponding to each other are fixedly connected to the top surface of the movable plates and the bottom surface of the movable blocks respectively. The connecting rods are movably connected between the upper and lower groups of symmetric fixed blocks through second rotating rods on both sides of the upper and lower ends. The fixing plates are fixedly connected to the inner bottom surface of the mechanism frame.

[0007] Preferably, a set of left - and right - symmetric front plates are fixedly installed on the rear wall of the mechanism housing, and the front plates are fixedly installed on the front end wall of the switching power supply body. A horizontal sliding opening is formed on the top surface of the mechanism housing, and first rotation holes are respectively formed above the left and right side walls of the mechanism housing. Vertical sliding openings are also respectively formed on the left and right side walls of the mechanism housing.

[0008] Preferably, first rotation rods are respectively fixedly installed at the left and right ends of the bidirectional screw rod, and the first rotation rods are movably installed in the first rotation holes. A knob is fixedly installed on the outer end wall of the first rotation rod at the right end. A set of left - and right - symmetric movable blocks are provided, and screw holes are formed on the side walls of the movable blocks and are threadedly connected to the bidirectional screw rod through the screw holes. A first slider is fixedly installed on the top surface of the movable block, and the first slider is movably installed in the horizontal sliding opening.

[0009] Preferably, second sliders are respectively fixedly installed on the left and right side walls of the movable plate, and the second sliders are movably installed in the vertical sliding openings. Fixed blocks that are correspondingly front - and rear - symmetric are respectively fixedly installed at the bottom surface of the movable block and the center of the top surface of the movable plate, and second rotation holes are formed on the front wall of the fixed blocks.

[0010] Preferably, a set of front - and rear - symmetric second rotation rods are respectively fixedly installed at the upper and lower ends of the connecting rod, and the second rotation rods are movably installed in the second rotation holes.

[0011] Preferably, the fixed plate is fixedly installed on the inner bottom surface of the mechanism housing, and a number of mutually corresponding arc - shaped wire - clamping openings are respectively formed on the top surface of the fixed plate and the bottom surface of the movable plate.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] In the present utility model, through the cooperation of the anti - loosening mechanism and the use of the switching power supply body, after the connecting wire passes through between the movable plate and the fixed plate in the mechanism housing and is connected to the wiring terminal at the front end of the switching power supply body, the connecting wire is placed in the arc - shaped wire - clamping opening formed on the top surface of the fixed plate, and the knob is rotated to drive the bidirectional screw rod to rotate through the first rotation rod. When the symmetric movable blocks move relatively along the bidirectional screw rod through the screw holes, the connecting rod is forced to incline, and when the included angle formed between the left - and right - symmetric connecting rods gradually becomes smaller, the movable plate is pushed downward until the connecting wire is clamped and fixed in the arc - shaped wire - clamping openings formed on the opposite side walls of the movable plate and the fixed plate. Thereby, it can effectively prevent the problem that the connecting wire loosens and falls off after being connected to the wiring terminal, and also avoid the problems of poor line contact or disconnection when the switching power supply body is in use. Furthermore, it not only improves the connection stability between the switching power supply body and the connecting wire during use, but also ensures the normal use of the switching power supply body. Brief Description of the Drawings

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the connection structure between the mechanism frame and the switch power supply body of the present utility model;

[0016] Figure 3 is a schematic exploded view of the anti-loosening mechanism of the present utility model.

[0017] In the figure: 1. Switch power supply body; 2. Wiring terminal; 3. Anti-loosening mechanism; 4. Front panel; 5. Mechanism frame; 6. Horizontal sliding opening; 7. First rotating hole; 8. Vertical sliding opening; 9. Bidirectional screw; 10. First rotating rod; 11. Knob; 12. Movable block; 13. Threaded hole; 14. First slider; 15. Movable plate; 16. Second slider; 17. Fixed block; 18. Second rotating hole; 19. Connecting rod; 20. Second rotating rod; 21. Fixed plate; 22. Arc-shaped wire clamping opening. Detailed Description of the Preferred Embodiment

[0018] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] As Figure 1 - Figure 3 shown, a switch power supply with stable connection for fire protection includes a switch power supply body 1. A wiring terminal 2 is provided at the front end of the switch power supply body 1. An anti-loosening mechanism 3 is provided at the front end of the wiring terminal 2. The anti-loosening mechanism 3 includes a mechanism frame 5, a bidirectional screw 9, a movable block 12, a movable plate 15, a fixed block 17, a connecting rod 19 and a fixed plate 21. The mechanism frame 5 is fixedly connected to the front end of the switch power supply body 1 through the front panels 4 on both sides of the rear wall. The bidirectional screw 9 is movably connected to the upper part inside the mechanism frame 5 through the first rotating rods 10 at both ends. The threaded holes 13 on the side walls of the two movable blocks 12 are movably connected to the bidirectional screw 9. The movable plate 15 is movably connected to the inside of the mechanism frame 5 through the second sliders 16 on both sides. The top surface of the movable plate 15 and the bottom surface of the movable block 12 are respectively fixedly connected with symmetrically corresponding fixed blocks 17. The connecting rod 19 is movably connected between the upper and lower groups of symmetric fixed blocks 17 through the second rotating rods 20 on both sides of the upper and lower ends. The fixed plate 21 is fixedly connected to the bottom surface inside the mechanism frame 5.

[0020] As Figure 2As shown, a set of left - and - right symmetric front plates 4 are fixedly installed on the rear wall of the mechanism housing 5, and the front plates 4 are fixedly installed on the front end wall of the switch - mode power supply body 1. A horizontal sliding opening 6 is provided on the top surface of the mechanism housing 5, and first rotation holes 7 are respectively provided above the left and right side walls of the mechanism housing 5. Vertical sliding openings 8 are also respectively provided on the left and right side walls of the mechanism housing 5. The horizontal sliding opening 6 provided on the top surface of the mechanism housing 5 is used to cooperate with the first slider 14 to achieve sliding operation, the first rotation holes 7 provided on both sides are used to cooperate with the first rotating rod 10 to achieve rotation operation, and the vertical sliding openings 8 provided are used to cooperate with the second slider 16 to achieve sliding operation;

[0021] As Figure 3 As shown, first rotating rods 10 are respectively fixedly installed at the left and right ends of the bidirectional screw rod 9, and the first rotating rods 10 are movably installed in the first rotation holes 7. A knob 11 is fixedly installed on the outer end wall of the right - hand first rotating rod 10. A set of left - and - right symmetric movable blocks 12 are provided, and threaded holes 13 are provided on the side walls of the movable blocks 12 and are threadedly connected to the bidirectional screw rod 9 through the threaded holes 13. A first slider 14 is fixedly installed on the top surface of the movable block 12, and the first slider 14 is movably installed in the horizontal sliding opening 6. After the connecting wire passes through the space between the movable plate 15 and the fixing plate 21 in the mechanism housing 5 and is connected to the terminal 2, the knob 11 located on the right side of the mechanism housing 5 can be rotated. The knob 11 will drive the first rotating rod 10 to rotate in the first rotation hole 7, and the first rotating rod 10 will drive the bidirectional screw rod 9 to rotate, so that the left - and - right symmetric movable blocks 12 on the bidirectional screw rod 9 respectively make relative movement operations along the bidirectional screw rod 9 through the threaded holes 13 on the side walls, and the first slider 14 installed on the top surface during the movement will slide in the horizontal sliding opening 6 to limit the rotation of the movable block 12;

[0022] As Figure 3 As shown, second sliders 16 are respectively fixedly installed on the left and right side walls of the movable plate 15, and the second sliders 16 are movably installed in the vertical sliding openings 8. Fixed blocks 17 that are correspondingly installed front - to - back and symmetrically are respectively fixedly installed on the bottom surface of the movable block 12 and the center of the top surface of the movable plate 15, and second rotation holes 18 are provided on the front walls of the fixed blocks 17. During the downward movement of the movable plate 15, the second slider 16 will slide in the vertical sliding opening 8, and the second rotation holes 18 provided on the front walls of the fixed blocks 17 installed on the movable plate 15 and the movable block 12 are used to cooperate with the second rotating rod 20 to achieve rotation operation;

[0023] As Figure 3As shown in the figure, a set of second rotating rods 20 that are symmetric in the front and back are fixedly installed at the upper and lower ends of the connecting rod 19, and the second rotating rods 20 are movably installed in the second rotating holes 18. Under the movement of the movable block 12, the second rotating rods 20 installed at the upper and lower ends of the connecting rod 19 will rotate in the second rotating holes 18, and the connecting rod 19 will tilt. The included angle formed between the symmetric left and right connecting rods 19 will gradually increase, and thereby push the movable plate 15 downward;

[0024] As Figure 3 shown in the figure, the fixed plate 21 is fixedly installed on the inner bottom surface of the mechanism housing 5, and a plurality of corresponding arc-shaped wire clamping openings 22 are respectively formed on the top surface of the fixed plate 21 and the bottom surface of the movable plate 15. After the movable plate 15 continuously moves downward, the connecting wire connected to the terminal 2 will be pressed and fixed in the arc-shaped wire clamping openings 22 formed on the opposite side walls of the movable plate 15 and the fixed plate 21, so as to prevent the problem of loosening and falling off after the terminal 2 is wired, and improve the connection stability of the switching power supply body 1.

[0025] It should be noted that the present utility model is a switching power supply with stable connection for fire protection. After the connecting wire to be connected passes through the movable plate 15 and the fixed plate 21 installed in the mechanism frame 5 at the front end of the switching power supply body 1 through the front plate 4 and completes the connection with the terminal 2, the connected connecting wire is sequentially placed in the arc-shaped wire clamping openings 22 opened on the top surface of the fixed plate 21 installed on the inner bottom surface of the mechanism frame 5. Then, rotate the knob 11 located at the top right of the mechanism frame 5. The knob 11 will drive the first rotating rod 10 to rotate in the first rotating hole 7, and the first rotating rod 10 will drive the bidirectional screw 9 to rotate. During the rotation of the bidirectional screw 9, the symmetrically arranged movable blocks 12 on the left and right will respectively make relative movement operations along the bidirectional screw 9 through the screw holes 13 opened on the side walls. And when moving, the first sliders 14 installed on the top surfaces of the movable blocks 12 will slide in the horizontal sliding openings 6. At the same time, the symmetrically arranged second rotating rods 20 installed at the upper and lower ends of the connecting rod 19 will respectively rotate in the second rotating holes 18 opened on the front walls of the corresponding symmetrically arranged fixed blocks 17 installed on the top surface of the movable plate 15 and the bottom surface of the movable block 12. And the connecting rod 19 is inclined, and the included angle formed between the symmetrically arranged connecting rods 19 on the left and right will gradually become smaller. And during this change process, the lower movable plate 15 is pushed. The movable plate 15 will move downward in the mechanism frame 5. And when moving, the second sliders 16 installed on the left and right sides of the movable plate 15 will slide in the vertical sliding openings 8 until the movable plate 15 presses and fixes the connecting wire on the fixed plate 21 through the arc-shaped wire clamping opening 22 opened on the bottom surface, and the connecting wire is clamped and fixed in the arc-shaped wire clamping openings 22 on the opposite surface walls of the movable plate 15 and the fixed plate 21. Then, stop rotating the knob 11. Thus, it can effectively prevent the problem that the connecting wire loosens and falls off after being connected to the terminal 2, and also avoid the problems of poor line contact or disconnection when the switching power supply body 1 is in use. Furthermore, it not only improves the connection stability between the switching power supply body 1 and the connecting wire during use, but also ensures the normal use of the switching power supply body 1.

[0026] In summary, the above is only the preferred embodiment of the present utility model and is not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, various improvements can be made to it without departing from the scope of the present utility model, and components therein can be replaced with equivalents, or some of the technical features can be equivalently replaced. All within the spirit and principle of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A switching power supply with stable connection for fire protection, comprising a switching power supply body (1), and a wiring terminal (2) is arranged at the front end of the switching power supply body (1), and is characterized in that: The front end of the terminal block (2) is provided with an anti-loosening mechanism (3), and the anti-loosening mechanism (3) includes a mechanism housing (5), a bidirectional screw (9), a movable block (12), a movable plate (15), a fixed block (17), a connecting rod (19) and a fixing plate (21). The mechanism housing (5) is fixedly connected to the front end of the switching power supply body (1) through the front plates (4) on both sides of the rear wall, and the bidirectional screw (9) is movably connected to the upper part inside the mechanism housing (5) through the first rotating rods (10) at both ends. The screw holes (13) on the side walls of the two movable blocks (12) are movably connected to the bidirectional screw (9). The movable plate (15) is movably connected to the inside of the mechanism housing (5) through the second sliders (16) on both sides, and the top surface of the movable plate (15) and the bottom surface of the movable block (12) are respectively fixedly connected with symmetrically corresponding fixed blocks (17). The connecting rod (19) is movably connected between the upper and lower groups of symmetric fixed blocks (17) through the second rotating rods (20) on both sides of the upper and lower ends. The fixing plate (21) is fixedly connected to the inner bottom surface of the mechanism housing (5).

2. The switching power supply with stable connection for fire protection according to claim 1, characterized in that: A set of left and right symmetric front plates (4) are fixedly installed on the rear wall of the mechanism housing (5), and the front plates (4) are fixedly installed on the front end wall of the switching power supply body (1). A horizontal sliding opening (6) is formed on the top surface of the mechanism housing (5), and first rotating holes (7) are respectively formed above the left and right side walls of the mechanism housing (5). Vertical sliding openings (8) are also respectively formed on the left and right side walls of the mechanism housing (5).

3. A switching power supply with stable connection for fire protection according to claim 2, characterized in that: First rotating rods (10) are respectively fixedly installed at the left and right ends of the bidirectional screw (9), and the first rotating rods (10) are movably installed in the first rotating holes (7). A knob (11) is fixedly installed on the outer end wall of the right first rotating rod (10). A set of left and right symmetric movable blocks (12) are provided, and screw holes (13) are formed on the side walls of the movable blocks (12) and are threadedly connected to the bidirectional screw (9) through the screw holes (13). A first slider (14) is fixedly installed on the top surface of the movable block (12), and the first slider (14) is movably installed in the horizontal sliding opening (6).

4. The switching power supply with stable connection for fire protection according to claim 3, characterized in that: Second sliders (16) are respectively fixedly installed on the left and right side walls of the movable plate (15), and the second sliders (16) are movably installed in the vertical sliding openings (8). Fixed blocks (17) that are symmetrically corresponding front and rear are respectively fixedly installed at the center of the bottom surface of the movable block (12) and the top surface of the movable plate (15), and second rotating holes (18) are formed on the front wall of the fixed blocks (17).

5. The switching power supply with stable connection for fire fighting according to claim 4, characterized in that: A set of front and rear symmetric second rotating rods (20) are respectively fixedly installed at the upper and lower ends of the connecting rod (19), and the second rotating rods (20) are movably installed in the second rotating holes (18).

6. A switching power supply with stable connection for fire protection according to claim 5, characterized in that: The fixing plate (21) is fixedly installed on the inner bottom surface of the mechanism housing (5), and a number of mutually corresponding arc-shaped wire clamping openings (22) are respectively formed on the top surface of the fixing plate (21) and the bottom surface of the movable plate (15).

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