CN216412945U

CN216412945U - Bistable switch

Info

Publication number: CN216412945U
Application number: CN202122076184.8U
Authority: CN
Inventors: 张斌
Original assignee: Xiangshan Sanhuan Electric Machinery Co ltd
Current assignee: Xiangshan Sanhuan Electric Machinery Co ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-04-29
Anticipated expiration: 2031-08-31

Abstract

The utility model relates to a bistable switch, which comprises a switch base, a circuit box, a PCB (printed Circuit Board) and a sealing plate, wherein a cavity for installing the circuit box is formed at the bottom of the switch base; a groove with a shape matched with that of the circuit box is formed in the cavity, wall grooves are formed in two sides in the groove, and convex strips are arranged outside the circuit box and correspond to the wall grooves. The utility model aims to provide a bistable switch with a circuit box capable of being stably installed in a switch base, and solves the problem that the conventional bistable switch is poor in shock resistance.

Description

Bistable switch

Technical Field

The utility model relates to a switch, in particular to a bistable switch.

Background

In elevator door machine systems, bi-stable switches are used in elevator car leveling position detection systems. The series of speed change positions of the door opening limit, the door closing limit, the door opening deceleration and the door closing deceleration in the operation of the elevator door motor are controlled by the bistable switch.

The bistable switch of the gantry crane is a dry reed type bistable switch. The principle is that two spring pieces which can be closed and opened are arranged in a glass tube, a small magnetic ring is sleeved on a reed tube, an external large magnet is used for driving the reed tube to be closed, after the large magnet leaves, the reed in the reed tube is still kept in a closed state due to the fact that the small magnetic ring on the reed tube is magnetic, and when the external large magnet is driven to return reversely, the reed closed by the reed tube can be opened due to the fact that the magnetism is larger than that of the small magnetic ring fixed on the reed tube, and therefore the function of magnetic preservation is achieved.

At present, the switch has unstable stable structural performance, poor shock resistance and high failure rate in low-temperature environment, and has the following defects in actual use: due to transportation vibration and installation knocking in the switch using environment, the distance between reed leaves in the reed pipe can be changed and the reed pipe cannot work normally when the switch falls to the ground, and the shock resistance is poor.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a bistable switch with a circuit box stably installed in a switch base, which solves the problem of poor shock resistance of the existing bistable switch.

In order to achieve the purpose, the utility model provides a bistable switch which comprises a switch base, a circuit box, a PCB (printed circuit board) and a sealing plate, wherein a cavity for installing the circuit box is formed at the bottom of the switch base; a groove with a shape matched with that of the circuit box is formed in the cavity, wall grooves are formed in two sides in the groove, and convex strips are arranged outside the circuit box and correspond to the wall grooves.

Furthermore, the whole elongated shape that is the isosceles trapezoid in cross-section that is of circuit box, wherein the circuit box is close to the area of the one side of shrouding is greater than keeps away from the one side of shrouding.

Further, the cross section of the groove is in an isosceles trapezoid shape, wherein the area of one surface, close to the sealing plate, of the groove is larger than that of one surface, far away from the sealing plate.

Further, the switch base top is provided with the observation hole.

Furthermore, a wiring hole and a lead fixing hole are formed in the connecting column.

Further, the wiring hole is connected with the outside, the wire fixing hole is perpendicular to the wiring hole, and threads are formed inside the wire fixing hole.

Further, a rotatable flip cover is arranged at the top of the switch base.

Further, one end, close to the connecting column, of the groove is provided with a wiring groove.

The bistable switch applying the technical scheme of the utility model comprises a switch base, a circuit box, a PCB circuit board and a sealing plate. The switch base is internally provided with a cavity for mounting the circuit box, and a groove with the shape matched with the circuit box is formed in the cavity. The circuit box is arranged in the groove, so that the change of the distance between the reed leaves in the reed pipe caused by transportation vibration, installation knocking or falling of the bistable switch to the ground in the use environment can be effectively prevented, and the anti-seismic performance of the bistable switch is improved.

Drawings

FIG. 1 is a schematic diagram illustrating a bistable switch according to an embodiment of the present invention;

FIG. 2 is a schematic diagram illustrating a bottom angle configuration of a bistable switch according to an embodiment of the present invention;

FIG. 3 is a schematic diagram showing the configuration of the rear bottom angle of the bistable switch concealing closure plate;

FIG. 4 illustrates a partial cross-sectional view of the bi-stable switch of FIG. 3;

FIG. 5 shows an enlarged schematic view of the structure at A in FIG. 3;

a schematic view of the structure of the stud is shown in fig. 6.

Reference numerals: 1-a switch base; 2-a circuit box; 3-closing the plate; 4-connecting a column; 5-a groove; 6-wall groove; 7-convex strips; 8-a viewing aperture; 9-wiring holes; 10-wire fixing holes; 11-a flip cover; 12-wiring groove.

Detailed Description

The present invention is further illustrated by the following examples, which are not intended to limit the utility model to these embodiments. It will be appreciated by those skilled in the art that the present invention encompasses all alternatives, modifications and equivalents as may be included within the scope of the claims.

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.

As shown in fig. 1-6, this embodiment shows a bistable switch, which includes a switch base 1, a circuit box 2, a PCB circuit board and a sealing plate 3, wherein a cavity for installing the circuit box 2 is formed at the bottom of the switch base 1, the PCB circuit board is installed in the circuit box 2, a bistable switch circuit is formed on the PCB circuit board, two connecting posts 4 are arranged at one end in the cavity, and the PCB circuit board is connected to the connecting posts 4; a groove 5 with a shape matched with that of the circuit box 2 is formed in the cavity, wall grooves 6 are formed in two sides of the groove 5, and convex strips 7 are arranged outside the circuit box 2 and correspond to the wall grooves.

The circuit box 2 is integrally in the shape of an elongated strip with an isosceles trapezoid cross section, wherein the area of one surface of the circuit box 2 close to the sealing plate 3 is larger than that of one surface of the sealing plate 3 away from the circuit box.

The section of the groove 5 is isosceles trapezoid, wherein the area of one surface of the groove 5 close to the sealing plate 3 is larger than that of one surface far away from the sealing plate 3.

Wherein the arrangement of the ribs 7 and the groove walls restricts the movement of the circuit box 2 in its length direction.

The trapezoidal strip design of the circuit box 2 and the groove 5 enables the circuit box 2 to be better fixed in the groove 5, and prevents the circuit box 2 from displacing or vibrating relative to the groove 5.

Specifically, the PCB is mounted in the cavity of the switch base 1 through the circuit box 2. Be provided with the LED pilot lamp on the PCB circuit board, switch base 1 top is provided with observation hole 8 to observe the LED pilot lamp.

In the structure, the connecting column 4 is provided with a wiring hole 9 and a lead fixing hole 10. Wherein the wiring holes 9 are connected with the outside and can be used for connecting wires, thereby connecting the PCB circuit board with an external frequency converter.

The lead fixing hole 10 is perpendicular to the wiring hole 9, and threads are formed in the lead fixing hole, and the lead can be fixed by penetrating a screw into the lead fixing hole 10.

Further, a rotatable flip 11 is arranged on the top of the switch base 1. The flip cover 11 is used for protecting screws and can be opened at any time.

More specifically, one end of the groove 5 near the terminal is provided with a wiring groove 12. The wiring groove 12 is convenient for connecting the PCB and the wiring terminal, so that a lead for connecting the PCB and the wiring terminal has a right route path, and the bistable switch is convenient to assemble.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bistable switch characterized by: the circuit board comprises a switch base (1), a circuit box (2), a PCB (printed circuit board) and a sealing plate (3), wherein a cavity for installing the circuit box (2) is formed at the bottom of the switch base (1), the PCB is installed in the circuit box (2), a bistable switch circuit is formed on the PCB, two connecting columns (4) are arranged at one end in the cavity, and the PCB is connected with the connecting columns (4); a groove (5) with a shape matched with that of the circuit box (2) is formed in the cavity, wall grooves (6) are formed in two sides of the groove (5), and protruding strips (7) are arranged outside the circuit box (2) and correspond to the wall grooves (6).

2. A bistable switch according to claim 1 wherein: the circuit box (2) is integrally in the shape of a long strip with an isosceles trapezoid cross section, wherein the area of one surface, close to the sealing plate (3), of the circuit box (2) is larger than the area of one surface, far away from the sealing plate (3).

3. A bistable switch according to claim 2 wherein: the cross section of the groove (5) is isosceles trapezoid, wherein the area of one surface, close to the sealing plate (3), of the groove (5) is larger than that of the other surface, far away from the sealing plate (3).

4. A bistable switch according to claim 1 wherein: the top of the switch base (1) is provided with an observation hole (8).

5. A bistable switch according to claim 1 wherein: the connecting column (4) is provided with a wiring hole (9) and a lead fixing hole (10).

6. A bistable switch according to claim 5 wherein: the wiring hole (9) is connected with the outside, the lead fixing hole (10) is perpendicular to the wiring hole (9), and threads are formed inside the lead fixing hole (10).

7. A bistable switch according to claim 6, wherein: the top of the switch base (1) is provided with a rotatable flip cover (11).

8. A bistable switch according to claim 1 wherein: and one end of the groove (5) close to the connecting column (4) is provided with a wiring groove (12).