CN211404391U

CN211404391U - Centrifugal switch

Info

Publication number: CN211404391U
Application number: CN202020286107.8U
Authority: CN
Inventors: 姜波
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-10
Filing date: 2020-03-10
Publication date: 2020-09-01
Anticipated expiration: 2030-03-10

Abstract

The utility model belongs to the electrical technology field, which discloses a centrifugal switch, the front side and the rear side of the upper surface of the lower support plate are both connected with the lower end of a longitudinal plate-shaped fixed plate, the upper end of the fixed plate is connected with the upper end of a pinch plate which is turned over outwards, a transverse spring is respectively arranged below the pinch plate, the natural state of the spring is a downward-convex arc-shaped structure, the two ends of the spring are respectively connected with the lower part of the inner moving contact connecting plate inner side surface of the longitudinal plate-shaped, the upper part of the outer side surface of the inner moving contact connecting plate is respectively provided with an inner moving contact, the lower part of the outer side surface of the inner moving contact connecting plate is respectively connected with a transverse plate-shaped outer moving contact connecting plate, the upper surface of the outer moving contact connecting plate is respectively connected with the lower end of an outer moving contact, the upper end, high sensitivity and long service life.

Description

Centrifugal switch

Technical Field

The utility model belongs to the technical field of it is electric, especially, relate to a centrifugal switch, especially relate to a motor that is used for curtain machine is rolled up to big-arch shelter.

Background

At present, in agricultural production, a roller shutter device is mostly needed for a greenhouse. Due to the limited conditions, three-phase motors cannot be used in most greenhouses. Therefore, the single-phase capacitor start asynchronous motor becomes the first. Due to the special use, the cotton quilt or the straw curtain is wetted and overweight in rainy and snowy days, so that the brake failure of the roller shutter machine is caused. Or because the brake spring of the curtain rolling machine is broken, the brake claw and the column are rusted and can not move, the brake claw can not return and the like, the power input end of the curtain rolling machine becomes the output end, and the overspeed is caused to the motor through the transmission of the triangular belt. The damage rate is high. Especially after rainy or snowy weather. Ordinary centrifugal switch can break because of powerful centrifugal force, and metal parts such as its spring, balancing weight can cause the electric leakage because of the speed is inlayed too fast on the motor coil, form the potential safety hazard, and the motor consequently can not independently start.

SUMMERY OF THE UTILITY MODEL

The utility model provides a centrifugal switch solves among the prior art existence because powerful centrifugal force breaks, and metal parts such as its spring, balancing weight can cause the electric leakage because of speed is inlayed too fast on the motor coil, form the potential safety hazard, and the motor consequently can not be the problem of independently starting to prevent centrifugal switch because of centrifugal force too big damage, avoid single phase motor to maintain the potential safety hazard of trouble and electric leakage.

In order to achieve the above object, the utility model adopts the following technical scheme:

the centrifugal switch comprises a transverse plate-shaped lower supporting plate, wherein the front side and the rear side of the upper surface of the lower supporting plate are connected with the lower end of a longitudinal plate-shaped fixed plate, the upper end of the fixed plate is connected with the upper end of a buckling plate which is folded outwards, a transverse spring is arranged below the buckling plate respectively, the natural state of the spring is an arc-shaped structure protruding downwards, two ends of the spring are connected with the lower part of the inner side surface of a longitudinal plate-shaped inner moving contact connecting plate respectively, inner moving contacts are arranged on the upper part of the outer side surface of the inner moving contact connecting plate respectively, the lower part of the outer side surface of the inner moving contact connecting plate is connected with a transverse plate-shaped outer moving contact connecting plate respectively, the upper surface of the outer moving contact connecting plate is connected with the lower end of each outer moving contact respectively, the upper end of each outer moving contact is connected with the end of a transverse plate-shaped upper supporting plate respectively, and the.

The centrifugal switch of the utility model, through the relative motion that the distance between the lower supporting plate and the upper supporting plate is reduced, the pinch plate plays the fixed action of surface contact to the middle part of the spring, and through the downward motion of the external moving contact, the external moving contact connecting plate is driven to move downward to drive the upper part of the internal moving contact connecting plate to incline outward, so that the internal moving contact moves towards the external moving contact, the two are connected, and the switch is opened; on the contrary, through the relative motion of distance increase between lower backup pad and the last backup pad for the buckle plays the fixed action of face contact to the middle part of spring, and moves contact upward movement outward through outer, drives outer contact connecting plate upward movement, inclines to the inboard in the upper portion that drives interior moving contact connecting plate, then makes interior moving contact keep away from outer contact movement that moves, makes the two break away from, and the switch is closed.

In the above aspect of the centrifugal switch, it is preferable that a center hole of the through hole type is provided at the center of the upper support plate.

In the above scheme of the centrifugal switch, it is preferable that the lower support plate is circular, the upper support plate is circular, and the longitudinal center lines of the lower support plate and the upper support plate coincide with each other.

In the above solution of the centrifugal switch, it is preferable that the diameter of the lower support plate is larger than the diameter of the upper support plate.

In the above scheme of the centrifugal switch, preferably, one side of the outer moving contact connecting plate connected with the inner moving contact connecting plate is provided with a bending structure.

In the above scheme of the centrifugal switch, preferably, one side of the outer moving contact connecting plate connected with the inner moving contact connecting plate is provided with a bending structure which is inclined upwards from inside to outside.

In the above aspect of the centrifugal switch, it is preferable that the pinch plate is provided with an inverted L-shaped bent structure.

In the above scheme of the centrifugal switch, it is preferable that the bending structure of the pinch plate is an arc-shaped bending structure.

In the above solution of the centrifugal switch it is preferred that the pinch plate is located at the middle of the spring.

In the above solution of the centrifugal switch, it is preferable that the height of the longitudinal portion of the pinch plate is greater than the outer diameter of the spring.

The utility model discloses a centrifugal switch can reach following beneficial effect:

the centrifugal switch of the utility model, through adopting the structure mode of the double-moving contact, the fixed control structure that the cooperation carries out the face contact to the spring can solve the problem that the metal parts such as its spring, balancing weight can cause the electric leakage because the speed is inlayed too fast on the motor coil because of the powerful centrifugal force that exists among the prior art, form the potential safety hazard, the motor can not be started independently, it can play the upper supporting plate that has spacing hole that stops limiting action in the both sides of the spring that can play the counter weight effect, prevent that centrifugal switch from damaging because of centrifugal force is too big, avoid single-phase motor to maintain the trouble and the potential safety hazard of electric leakage; the novel sensor has the advantages of reasonable and compact structure, high sensitivity and prolonged service life, thereby reducing cost, improving economic benefit, use safety and reliability, and establishing a firmer foundation for reducing damage rate and improving safety because no case of damage exists through a large number of uses and experiments in recent years.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 is a front view of the centrifugal switch of the present invention.

Fig. 2 is a top view of the centrifugal switch of the present invention.

Fig. 3 is a side view of the centrifugal switch of the present invention.

In the figure, 1 is a lower supporting plate, 2 is a fixing plate, 3 is a pinch plate, 4 is a spring, 5 is an inner moving contact connecting plate, 6 is an inner moving contact, 7 is an outer moving contact connecting plate, 8 is an outer moving contact, 9 is an upper supporting plate, 10 is a limiting hole, and 11 is a central hole.

Detailed Description

To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Examples

A centrifugal switch comprises a transverse plate-shaped lower supporting plate 1, wherein the front side and the rear side of the upper surface of the lower supporting plate 1 are connected with the lower end of a longitudinal plate-shaped fixed plate 2, the upper end of the fixed plate 2 is connected with the upper end of a buckling plate 3 which is turned over outwards, a transverse spring 4 is arranged below the buckling plate 3 respectively, the natural state of the spring 4 is an arc-shaped structure which protrudes downwards, two ends of the spring 4 are connected with the lower part of the inner side surface of a longitudinal plate-shaped inner moving contact connecting plate 5 respectively, inner moving contacts 6 are arranged on the upper part of the outer side surface of the inner moving contact connecting plate 5 respectively, the lower part of the outer side surface of the inner moving contact connecting plate 5 is connected with a transverse plate-shaped outer moving contact connecting plate 7 respectively, the upper surface of the outer moving contact connecting plate 7 is connected with the lower end of an outer moving contact 8 respectively, and the upper, the left side and the right side of the upper supporting plate 9 are respectively provided with a through hole-shaped limiting hole 10 matched with the upper end of the inner moving contact connecting plate 5.

The centrifugal switch of the utility model, because the natural state of the spring 4 is the arc structure of downward bulge, namely the natural state of the spring 4 is that its left and right ends are upwarped, then through the relative motion that the distance between the lower supporting plate 1 and the upper supporting plate 9 is reduced, make the pinch plate 3 play the fixed action of surface contact to the middle part of the spring 4, and through the downward motion of the external moving contact 8, drive the downward motion of the external moving contact connecting plate 7, in order to drive the upper portion of the internal moving contact connecting plate 5 to incline to the outside, make the internal moving contact 6 move towards the external moving contact 8, make the two connect, the switch is opened; on the contrary, through the relative motion of the increase of distance between lower backup pad 1 and the last backup pad 9 for pinch plate 3 plays the fixed action of face contact to the middle part of spring 4, and moves upward through outer movable contact 8, drives outer movable contact connecting plate 7 and moves upward, inclines to the inboard in the upper portion that drives inner moving contact connecting plate 5, makes inner moving contact 6 keep away from outer movable contact 8 and removes, makes the two break away from, and the switch is closed. Wherein, the outer side refers to that relative to the center point of the lower support plate 1, the side far away from the center point of the lower support plate 1 is the outer side, and the opposite side is the inner side. In which, the front-back direction refers to the outward and inward directions perpendicular to the paper surface in fig. 1, respectively, where the outward direction perpendicular to the paper surface in fig. 1 is the front direction, and vice versa is the rear direction, and the left-right direction refers to the left-right direction in fig. 1, respectively. The centrifugal switch of this embodiment, its structural style through adopting double acting contact, the cooperation carries out the fixed control structure of face contact to the spring, can be so that rational in infrastructure compactness, sensitivity is high, improves life to reduce cost improves economic benefits and safety in utilization, reliability.

More specifically, in the centrifugal switch of this embodiment, because the natural state of the spring 4 is an arc-shaped structure protruding downward, that is, the natural state of the spring 4 is that its left and right ends are tilted upward, the pinch plate 3 plays a role in fixing the middle of the spring 4 by surface contact through the relative motion of the distance between the lower support plate 1 and the upper support plate 9, and the outer moving contact 8 moves downward to drive the outer moving contact connecting plate 7 to move downward to drive the upper portion of the inner moving contact connecting plate 5 to tilt outward, so that the inner moving contact 6 moves toward the outer moving contact 8, and the two are connected, and the switch is turned on; on the contrary, through the relative motion of the increase of distance between lower backup pad 1 and the last backup pad 9 for pinch plate 3 plays the fixed action of face contact to the middle part of spring 4, and moves upward through outer movable contact 8, drives outer movable contact connecting plate 7 and moves upward, inclines to the inboard in the upper portion that drives inner moving contact connecting plate 5, makes inner moving contact 6 keep away from outer movable contact 8 and removes, makes the two break away from, and the switch is closed. Wherein, the outer side refers to that relative to the center point of the lower support plate 1, the side far away from the center point of the lower support plate 1 is the outer side, and the opposite side is the inner side. In which, the front-back direction refers to the outward and inward directions perpendicular to the paper surface in fig. 1, respectively, where the outward direction perpendicular to the paper surface in fig. 1 is the front direction, and vice versa is the rear direction, and the left-right direction refers to the left-right direction in fig. 1, respectively. The centrifugal switch of this embodiment, its structural style through adopting double acting contact, the cooperation carries out the fixed control structure of face contact to the spring, can be so that rational in infrastructure compactness, sensitivity is high, improves life to reduce cost improves economic benefits and safety in utilization, reliability. The inner moving contact connecting plate 5 may be a rectangular plate or an isosceles trapezoid plate, and the limiting hole 10 may be a rectangular hole matched with the upper end of the inner moving contact connecting plate 5. The positioning plate is positioned in the limiting hole of the base. As shown in fig. 1, 2 and 3, two ends of the spring 4 are respectively connected with the lower part of the inner side surface of the longitudinal plate-shaped inner moving contact connecting plate 5, the upper part of the outer side surface of the inner moving contact connecting plate 5 is respectively provided with an inner moving contact 6, the lower part of the outer side surface of the inner moving contact connecting plate 5 is respectively connected with a transverse plate-shaped outer moving contact connecting plate 7, the upper surface of the outer moving contact connecting plate 7 is respectively connected with the lower end of an outer moving contact 8, and the upper end of the outer moving contact 8 is respectively connected with the end part of a transverse plate-shaped upper. The outer moving contact 8 moves downwards to drive the outer moving contact connecting plate 7 to move downwards so as to drive the upper part of the inner moving contact connecting plate 5 to incline outwards, so that the inner moving contact 6 moves towards the outer moving contact 8, the inner moving contact and the outer moving contact are connected, and the switch is opened; on the contrary, through the relative motion of the increase of distance between lower backup pad 1 and the last backup pad 9 for pinch plate 3 plays the fixed action of face contact to the middle part of spring 4, and moves upward through outer movable contact 8, drives outer movable contact connecting plate 7 and moves upward, inclines to the inboard in the upper portion that drives inner moving contact connecting plate 5, makes inner moving contact 6 keep away from outer movable contact 8 and removes, makes the two break away from, and the switch is closed. The outer moving contact 8 is pressed downwards to drive the outer moving contact connecting plate 7 to move downwards so as to drive the upper part of the inner moving contact connecting plate 5 to incline outwards, so that the inner moving contact 6 moves towards the outer moving contact 8, the inner moving contact and the outer moving contact are connected, and the switch is opened; on the contrary, loosen outer moving contact 8, through the elastic force of spring 4, make the relative motion of distance increase between lower backup pad 1 and the last backup pad 9, make the buckle 3 play the fixed action of face contact to the middle part of spring 4, and move upwards through outer moving contact 8, drive outer moving contact connecting plate 7 and move upwards, incline to the inboard in upper portion that drives interior moving contact connecting plate 5, make interior moving contact 6 keep away from outer moving contact 8 and remove, make the two break away from, the switch is closed. The inner moving contact connecting plate 5 may be a rectangular plate or an isosceles trapezoid plate, and the limiting hole 10 may be a rectangular hole matched with the upper end of the inner moving contact connecting plate 5. The positioning plate is positioned in the limiting hole of the base. Namely, the upper end of the inner moving contact connecting plate 5 is extended into the limiting hole 10, so that the position state of the inner moving contact connecting plate 5 can be fixed, and the limiting effect is achieved.

The centrifugal switch of the embodiment is particularly suitable for a greenhouse roller shutter machine. The cotton quilt or the straw curtain used for the greenhouse is easy to be overweight in rainy and snowy days, so that the brake failure of the roller shutter machine is caused; or because the brake spring of the roller shutter machine breaks off, the brake fails, so that the power input end of the roller shutter machine becomes the output end, the motor is driven to overspeed through the V-belt, and at the moment, the common centrifugal switch can break off due to strong centrifugal force. Compared with a common centrifugal switch, the centrifugal switch of the embodiment is provided with the upper supporting plate 9 with the limiting hole 10, which can stop limiting action, in the two sides of the spring 4 which can play a role of the balance weight, so that the centrifugal switch is prevented from being damaged due to overlarge centrifugal force, has stronger practicability and is convenient for large-scale popularization.

In the above embodiment, a through hole type central hole 11 may be further disposed at the center of the upper support plate 9 to facilitate installation and use of the upper support plate 9. The central hole 11 may be a circular hole.

In the above embodiment, the lower supporting plate 1 may be circular, the upper supporting plate 9 may be circular, and the longitudinal center lines of the lower supporting plate 1 and the upper supporting plate 9 coincide with each other, so as to facilitate the installation of the overall structure and facilitate the stability and balance of the overall switch. When the central hole 11 is a circular hole, the central hole 11 preferably coincides with the longitudinal center lines of the lower support plate 1 and the upper support plate 9.

In the above embodiment, the diameter of the lower support plate 1 may be larger than that of the upper support plate 9, so as to improve the stability and firmness of the whole switch during use.

In the above embodiment, one side of the outer moving contact connecting plate 7 connected to the inner moving contact connecting plate 5 may be a bent structure, so that the supporting strength and firmness of the outer moving contact connecting plate 7 when the outer moving contact 8 moves downward may be improved.

In the above embodiment, one side of the outer moving contact connecting plate 7 connected to the inner moving contact connecting plate 5 may be a bent structure inclined upward from inside to outside, so that the supporting strength and firmness of the outer moving contact connecting plate 7 when the outer moving contact 8 moves downward can be further improved.

In the above embodiment, the buckling plate 3 may be a bent structure of an inverted L shape, so that the buckling plate 3 can fix the spring 4 through the bent structure.

In the above embodiment, the buckling structure of the buckling plate 3 is set as an arc-shaped buckling structure to improve the fixing and protecting effects of the buckling plate 3 on the spring 4, and improve the firm stability of the combined structure of the two.

In the above embodiment, the buckling plate 3 may be located in the middle of the spring 4, so that the balance of the spring 4 by the buckling plate 4 can be improved.

In the above embodiment, the height of the longitudinal part of the pinch plate 3 may be larger than the outer diameter of the spring 4, so as to improve the stability and strength of the fixing structure of the pinch plate 3 to the spring 4.

It should be noted that, the lower supporting plate 1, the fixing plate 2, the pinch plate 3, the spring 4, the inner moving contact connecting plate 5, the inner moving contact 6, the outer moving contact connecting plate 7, the outer moving contact 8, and the upper supporting plate 9 may all be stainless steel or alloy, and the surface thereof may be provided with a plating layer for protection, such as a zinc plating layer, etc., and the above-mentioned connecting structures may be connected by screws or welding; in addition, the inner moving contact connecting plate 5 may be a rectangular plate or an isosceles trapezoid plate, and the limiting hole 10 may be a rectangular hole matched with the upper end of the inner moving contact connecting plate 5.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A centrifugal switch comprises a transverse plate-shaped lower support plate (1), and is characterized in that the front side and the rear side of the upper surface of the lower support plate (1) are connected with the lower end of a longitudinal plate-shaped fixed plate (2), the upper end of the fixed plate (2) is connected with the upper end of a buckling plate (3) which is folded outwards, a transverse spring (4) is arranged below the buckling plate (3), the spring (4) is of an arc-shaped structure protruding downwards in a natural state, two ends of the spring (4) are respectively connected with the lower part of the inner side surface of a longitudinal plate-shaped inner moving contact connecting plate (5), inner moving contacts (6) are respectively arranged on the upper part of the outer side surface of the inner moving contact connecting plate (5), the lower part of the outer side surface of the inner moving contact connecting plate (5) is respectively connected with a transverse plate-shaped outer moving contact connecting plate (7), the upper surface of the outer moving contact connecting plate (7) is respectively connected with the, the upper end of the outer moving contact (8) is respectively connected with the end part of a transverse plate-shaped upper supporting plate (9), and the left side and the right side of the upper supporting plate (9) are respectively provided with a through hole-shaped limiting hole (10) matched with the upper end of the inner moving contact connecting plate (5).

2. A centrifugal switch according to claim 1, characterized in that the centre of the upper support plate (9) is provided with a through-hole-type centre hole (11).

3. A centrifugal switch according to claim 2, characterized in that the lower support plate (1) is circular and the upper support plate (9) is circular, the longitudinal centre lines of the lower support plate (1) and the upper support plate (9) coinciding.

4. A centrifugal switch according to claim 3, characterized in that the diameter of the lower support plate (1) is larger than the diameter of the upper support plate (9).

5. A centrifugal switch according to claim 1, characterized in that the side of the outer moving contact connecting plate (7) connected with the inner moving contact connecting plate (5) is arranged in a bent structure.

6. A centrifugal switch according to claim 5, characterized in that the side of the outer moving contact connecting plate (7) connected with the inner moving contact connecting plate (5) is arranged into a bent structure which is inclined upwards from inside to outside.

7. A centrifugal switch according to claim 6, characterized in that the pinch plate (3) is provided as an inverted L-shaped bent structure.

8. A centrifugal switch according to claim 7, characterized in that the bending structure of the pinch plate (3) is arranged as an arc-shaped bending structure.

9. A centrifugal switch according to claim 8, characterized in that the pinch plate (3) is located in the middle of the spring (4).

10. A centrifugal switch according to claim 9, characterized in that the height of the longitudinal part of the pinch plate (3) is greater than the outer diameter of the spring (4).