CN210443445U

CN210443445U - Safe automatic power-off device for door opening

Info

Publication number: CN210443445U
Application number: CN201921718982.2U
Authority: CN
Inventors: 邓德平
Original assignee: Shenzhen Changtian Chuangxiang Technology Co Ltd
Current assignee: Shenzhen Changtian Chuangxiang Technology Co Ltd
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-05-01
Anticipated expiration: 2029-10-14

Abstract

The utility model discloses a safe automatic power-off device that opens door, the both ends of installation shell are provided with entrance hole and wire hole respectively, are provided with the mounting groove that is used for fixed micro-gap switch in the installation shell, and the mounting groove separates through the division board, and the open-top of installation shell, and the top is provided with the drive plate, and the one end of drive plate is provided with the rotation axis, and the rotation axis settles the pivot groove that the one end at the installation shell top set up; the width of the driving plate is equal to that of the top opening of the mounting shell; when the equipment door is opened, the edge of the equipment door is separated from the drive plate, and the drive plate rotates and bounces by taking the rotating shaft as a rotating center line so as to loosen all the micro switches and disconnect the circuit; the beneficial effects are that: because the width of drive plate equals the width of installation shell open-top, when opening the equipment door, equipment door edge breaks away from the drive plate, and the drive plate uses the rotation axis to rotate as the rotation center line and bounces thereby unclamp all micro-gap switches and break off the circuit simultaneously and make equipment outage to prevent that the staff from being electrocuted.

Description

Safe automatic power-off device for door opening

Technical Field

The utility model relates to an electromechanical device accessory technical field especially relates to a safe automatic power-off device that opens door.

Background

At present, almost all electromechanical equipment applied to the industry are provided with a switch door, the switch door is usually made of metal materials as the equipment, the equipment is usually powered, the equipment is sometimes repaired, accidents that workers are electrically shocked occur after the door is opened, the situation is dangerous, the workers are likely to be electrically shocked and die due to carelessness, and then the people connect a charged device to a ground wire, but the mode is not stable. Therefore, the improvement of the safe door-opening automatic power-off device is a problem to be solved urgently at present.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a safe automatic power-off device that opens door, power-off device install on equipment, and when the door of equipment was opened, equipment auto-power-off prevented that the staff is by the danger of electric shock.

In order to solve the technical problem, the utility model discloses a technical scheme does: a safe automatic power-off device for opening a door comprises a power-off device arranged at the edge of a door opening of equipment, wherein the power-off device comprises an installation shell and one or more micro switches arranged in the installation shell, the on-off electric elastic pieces of one or more micro switches extend out of the top of the installation shell, the on-off electric elastic pieces are arranged on a motion path of an equipment door, one or more installation grooves for fixing the micro switches are arranged in the installation shell, the one or more installation grooves are separated by a partition plate, the top of the installation shell is opened, the top of the installation shell is provided with a driving plate, one end of the driving plate is provided with a rotating shaft, and the rotating shaft is hinged to one end of the top of the installation shell; the width of the driving plate is equal to that of the top opening of the mounting shell so as to cover all the micro switches; when the equipment door is closed, the edge of the equipment door extrudes the driving plate to rotate by taking the rotating shaft as a rotating center line so as to extrude the micro switches to close the circuit at the same time; when the equipment door is opened, the edge of the equipment door is separated from the driving plate, and the driving plate rotates and bounces by taking the rotating shaft as a rotating center line, so that the micro switches are loosened, and a circuit is disconnected.

As the utility model discloses an optimal scheme, micro-gap switch includes casing, button and connection contact, the one end on casing upper portion is located to the break-make shell fragment, the break-make shell fragment is pressed the button and is leaned on in the casing top, the button lower extreme stretches into in the casing, the slope is equipped with a shell fragment in the casing, shell fragment one end and button bottom contact, the shell fragment other end and connection contact move, the connection contact includes normally closed contact and normally open contact, be equipped with the spring in the casing of shell fragment below, the spring lower extreme is connected with the pull rod, the button bottom is equipped with the connecting rod with shell fragment contact department, and this connecting rod is connected with the pull rod.

As a preferred scheme of the utility model, a first micro-switch for controlling the on-off of the zero line and a second micro-switch for controlling the on-off of the live line are arranged in the mounting shell; and the normally open contacts of the first micro switch and the second micro switch are respectively connected to a zero line and a live line of the equipment.

As a preferable embodiment of the present invention, the end of the movable spring piece contacting the connection contact forms an inclined plane, and the inclination angle of the inclined plane is 20 to 45 °.

As the utility model discloses an optimal scheme, the side of installation shell is provided with and is used for passing the screw rod fixed micro-gap switch's screw hole, and the upper surface of installation shell is provided with and is used for fixing fixed screw hole and the spacer pin on equipment with power-off device.

As the utility model discloses an optimal scheme, the fixed screw hole sets up the position at four apex angles of installation shell upper surface respectively, just the top of spacer pin is provided with the direction cambered surface.

The beneficial effect of adopting above-mentioned technical scheme is: because the width of drive plate equals the width of installation shell open-top, when opening the equipment door, equipment door edge breaks away from the drive plate, and the drive plate uses the rotation axis to rotate as the rotation center line and bounces thereby unclamp all micro-gap switches and break off the circuit simultaneously, makes equipment outage to prevent that the staff from being electrocuted.

Drawings

Fig. 1 is a schematic structural view of an angle of the present invention;

fig. 2 is a schematic structural view of another angle of the present invention;

fig. 3 is a schematic diagram of the microswitch of the present invention;

in the figure, 1, a housing is installed; 2. a drive plate; 3. mounting grooves; 4. an air intake chamber; 5. a wire inlet hole; 6. a wire outlet hole; 7. a rotating shaft; 8. a screw hole; 9. fixing the threaded hole; 10. a spacing pin; 11. a housing; 12. a button; 13. a spring plate; 14. a movable spring plate; 15. a normally closed contact; 16. a normally open contact; 17. a spring; 18. a pull rod; 19. a connecting rod; 20. a boss; 21. an inclined surface; 22. neutral/live.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

According to fig. 1, the embodiment provides a safe automatic power-off device for opening a door, which includes a power-off device installed at the edge of an equipment door opening, the power-off device includes an installation shell 1 and one or more micro switches arranged in the installation shell 1, on-off electric elastic pieces of the one or more micro switches extend out of the top of the installation shell 1, and the on-off electric elastic pieces are arranged on a motion path of an equipment door. Both ends of installation shell 1 are provided with entrance hole 5 and wire hole 6, be provided with one or more mounting groove 3 that are used for fixed micro-gap switch in the installation shell 1, one or more mounting groove 3 separate through the division board, every mounting groove 3 all is the shape size unanimity, and the micro-gap switch of settling also all is the same size of same model, just so can guarantee that all micro-gap switches are unanimous at the height of the shell fragment 13 that 1 top of installation shell exposes, just can press all micro-gap switches simultaneously when drive plate 2 pushes down, accomplish simultaneously circular telegram or outage. The top of the mounting shell 1 is opened, the top of the mounting shell is provided with a driving plate 2, one end of the driving plate 2 is provided with a rotating shaft 7, and the rotating shaft 7 is hinged to one end of the top of the mounting shell 1; the width of the driving plate 2 is equal to that of the top opening of the mounting shell 1 so as to cover all the micro switches; when the equipment door is closed, the equipment door edge extrusion driving plate 2 rotates by taking the rotating shaft 7 as a rotating center line so as to extrude a plurality of micro switches to close a circuit at the same time; when the equipment door is opened, the edge of the equipment door is separated from the driving plate 2, and the driving plate 2 rotates and bounces by taking the rotating shaft 7 as a rotating center line so as to loosen a plurality of micro switches and break a circuit at the same time. When the driving plate 2 is not pressed, the driving plate 2 can automatically recover due to the fact that the driving plate 2 is movable under the action of the automatic recovery force of the elastic sheets 13 of all the micro switches. The utility model has a plurality of application fields, is commonly used on a door cabinet of an air purifier, and when the door is closed, the door cabinet extrudes the driving plate 2 to press down the elastic pieces 13 of all the micro switches to be electrified; after the door is opened, the driving plate 2 automatically restores, and the elastic sheet 13 of the microswitch also automatically restores under the action of the spring 17 to realize power failure; such setting is favorable to saving manual operation cost for maintenance machine's safe and reliable more.

The side of installation shell 1 is provided with the screw hole 8 that is used for passing the fixed micro-gap switch of screw rod, and screw hole 8 is convenient for insert the dismantlement installation micro-gap switch, when needs change or maintain micro-gap switch, and the dismouting is also very convenient. The upper surface of the mounting shell 1 is provided with a fixed threaded hole 9 for fixing the safe door opening automatic power-off device on a machine and a limiting pin 10; the fixing threaded holes 9 are respectively arranged at the positions of four top corners of the upper surface of the mounting shell 1, and the top of the limiting pin 10 is provided with a guide cambered surface. The fixing threaded hole 9 is used for fixing the mounting shell 1 on a machine, such as a doorway of the machine, by using a screw; the limiting pin 10 is used for guiding and fixing the mounting shell 1, and is convenient to mount.

Micro-gap switch includes casing 11, button 12 and connection contact, 11 upper portion one end of casing is equipped with shell fragment 13, shell fragment 13 has pressed button 12 and has inclined in casing 11 top, 12 lower extremes of button stretch into in casing 11, the slope is equipped with a shell fragment 14 in the

casing

11, 14 one end of shell fragment and the contact of button 12 bottom, the contact of 14 other ends of shell fragment and connection contact, it includes normally closed contact 15 and normally open contact 16 to connect the contact, be equipped with spring 17 in the casing 11 of shell fragment 13 below, the spring 17 lower extreme is connected with pull rod 18, button 12 bottom is equipped with connecting rod 19 with the contact department of shell fragment 14, this connecting rod 19 is connected with pull rod 18. The elastic sheet 13 is touched, the button 12 is downward, the button 12 extrudes the movable elastic sheet 14 below, an inclined plane formed at the tail end of the movable elastic sheet 14 touches the normally closed contact 15, the movable elastic sheet 14 is pressed down by the button 12, the connecting rod 19 pulls the pull rod 18 downward, the spring 17 is downward, restoring force is generated, the button 12 can be frequently switched on and switched off, the structure is simple, and the service life is long.

The tail end of the movable spring piece 14 contacted with the connecting contact is provided with an inclined surface 21, and the inclined angle of the inclined surface 21 is 20-45 degrees. Multiple tests show that the inclination angle of the movable spring plate 14 is set to be within the range, so that the end part of the movable spring plate 14 can be in full contact with the contact, and the phenomenon of poor electric contact caused by insufficient contact is avoided.

A first microswitch for controlling the on-off of a zero line and a second microswitch for controlling the on-off of a live wire are arranged in the mounting shell 1; normally open contacts of the first micro switch and the second micro switch are respectively connected to a zero line and a live line of the equipment. This is the first embodiment of the power-off device of the utility model, only two micro-switches are provided in the installation shell 1, the wire inlet 5 of each micro-switch is used for extending into respective zero line or live wire and is connected with the end of the movable elastic piece 14 far away from the contact, the wire outlet 6 is used for extending into respective zero line or live wire and is connected with the normally open contact 16, the movable elastic piece 14 is made of conductive material, when the movable elastic piece 14 is arranged in the normally open contact 16, the wire inlet 5 and the zero line or live wire of the wire outlet 6 form a passage; when placed in a normally closed contact 15, an open circuit is formed. When the equipment door is closed, the contact of the on-off electric spring pieces 13 of the two micro switches is indirectly extruded through the extrusion driving plate 2 to move to the normally closed contact 15, so that the live wire and the zero line are completely disconnected, the safety of the equipment is guaranteed, and the electric shock of a worker during maintenance or working is avoided.

In some possible embodiments, only one microswitch for controlling the on/off of the live wire can be arranged in the installation shell 1, so that the cost is saved.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. A safe automatic power-off device for opening a door is characterized by comprising a power-off device arranged at the edge of an equipment door opening, wherein the power-off device comprises an installation shell and one or more micro switches arranged in the installation shell, the on-off electric elastic sheet of one or more micro switches extends out of the top of the installation shell and is arranged on the motion path of an equipment door, one or more installation grooves for fixing the micro switches are arranged in the installation shell, one or more installation grooves are separated by a separation plate, the top of the installation shell is provided with an opening, the top of the installation shell is provided with a driving plate, one end of the driving plate is provided with a rotating shaft, and the rotating shaft is hinged to one end of the top of the installation shell; the width of the driving plate is equal to that of the top opening of the mounting shell so as to cover all the micro switches; when the equipment door is closed, the edge of the equipment door extrudes the driving plate to rotate by taking the rotating shaft as a rotating center line so as to extrude the micro switches to close the circuit at the same time; when the equipment door is opened, the edge of the equipment door is separated from the driving plate, and the driving plate rotates and bounces by taking the rotating shaft as a rotating center line, so that the micro switches are loosened, and a circuit is disconnected.

2. The automatic safe power-off device for opening a door according to claim 1, wherein the micro switch comprises a housing, a button and a connecting contact, the power-on and power-off elastic sheet is arranged at one end of the upper part of the housing, the power-on and power-off elastic sheet presses the button and inclines above the housing, the lower end of the button extends into the housing, a movable elastic sheet is obliquely arranged in the housing, one end of the movable elastic sheet is in contact with the bottom of the button, the other end of the movable elastic sheet is in contact with the connecting contact, the connecting contact comprises a normally closed contact and a normally open contact, a spring is arranged in the housing below the elastic sheet, the lower end of the spring is connected with the pull rod, a connecting rod is arranged at the contact part of.

3. The automatic safe power-off device for opening a door according to claim 2, wherein a first microswitch for controlling the on-off of a zero line and a second microswitch for controlling the on-off of a live line are arranged in the mounting shell; and the normally open contacts of the first micro switch and the second micro switch are respectively connected to a zero line and a live line of the equipment.

4. The automatic power-off device for a safety door opening according to claim 2, wherein the end of the striking plate contacting the connection contact forms an inclined surface, and the inclined surface has an inclination angle of 20-45 °.

5. The automatic safety power-off device for door opening according to claim 1, wherein the side of the mounting case is provided with a screw hole for fixing the micro switch through a screw, and the upper surface of the mounting case is provided with a fixing screw hole for fixing the power-off device on the equipment and a limit pin.

6. The automatic power-off device for a safety door opening according to claim 5, wherein the fixing threaded holes are respectively formed at four corners of the upper surface of the mounting case, and the top of the limit pin is provided with a guide arc surface.