CN219017536U

CN219017536U - Three-phase motor relay

Info

Publication number: CN219017536U
Application number: CN202320002374.1U
Authority: CN
Inventors: 蔡秋鸣; 苏春玲
Original assignee: Shanghai Yuwen Electronic Technology Co ltd
Current assignee: Shanghai Yuwen Electronic Technology Co ltd
Priority date: 2023-01-03
Filing date: 2023-01-03
Publication date: 2023-05-12
Anticipated expiration: 2033-01-03

Abstract

The utility model discloses a three-phase motor relay which comprises a first conductive component, a second conductive component, a control mechanism and a middle frame shell, wherein the first conductive component comprises three first conductive sheets which are arranged on the middle frame shell at intervals in parallel, and the first end of each first conductive sheet extends out of the middle frame shell; the second conductive component comprises three second conductive sheets which are arranged on the middle frame shell at intervals in parallel; the control mechanism comprises a deflector rod for poking the conductive elastic sheet, and the power piece is connected with the deflector rod through a transmission assembly; the front cover and the rear cover are respectively fixed on two sides of the middle frame shell. The beneficial effects of the technical scheme are as follows: the first conductive component and the second conductive component can be switched on and off under the action of the control mechanism, so that the conductive and power-off functions of the relay are realized. The control mechanism can maintain a larger maintaining force through the power piece and the transmission assembly, so that the second conductive assembly and the second conductive assembly can maintain the current state without being influenced.

Description

Three-phase motor relay

Technical Field

The utility model relates to the technical field of relays, in particular to a three-phase motor relay.

Background

Currently, the self-holding relay in the market mainly has two main types, one type is magnetic holding, and at least one hard permanent magnet is arranged in the magnetic holding; the other is a mechanical lock catch, which relies on a complex mechanical structure to maintain a relatively stable state; the two kinds of products have obvious defects, namely, the external dimension is relatively large, and the magnetic latching relay is easy to malfunction when the magnetic latching relay is acted by an external magnetic field or interfered by the external magnetic field when the magnetic latching relay is acted by an external force; the contact pressure of the mechanism lock catch type product is smaller, the high-power product is difficult to realize, and meanwhile, the component has high precision requirement, complex structure, difficult manufacture, high cost, large appearance volume and great limitation on the use occasion.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides the three-phase motor relay which has strong self-holding capacity, is not easy to be influenced by the outside, and has stable operation and higher safety.

The utility model provides a technical scheme that: a three-phase motor relay, comprising:

the first conductive assembly comprises three first conductive sheets which are arranged on the middle frame shell at intervals in parallel, the first ends of the first conductive sheets extend out of the middle frame shell, and the second ends of the first conductive sheets are positioned in the middle frame shell and fixedly provided with static contacts;

the second conductive assembly comprises three second conductive sheets which are arranged on the middle frame shell at intervals in parallel, the second conductive sheets are close to the first conductive sheets, the first ends of the second conductive sheets extend out of the middle frame shell, the second ends of the second conductive sheets are positioned in the middle frame shell and are provided with conductive elastic sheets, the first ends of the conductive elastic sheets are fixed on the second conductive sheets, and the second ends of the conductive elastic sheets are provided with movable contacts which are communicated with the fixed contacts;

the control mechanism comprises a deflector rod for poking the conductive elastic sheet, the deflector rod is arranged in the middle frame shell, a power piece for driving the deflector rod to reciprocate is further arranged in the middle frame shell, and the power piece is connected with the deflector rod through a transmission assembly; the method comprises the steps of,

the electric control device comprises a middle frame shell, wherein a front cover and a rear cover are respectively fixed on two sides of the middle frame shell, a partition plate is arranged in the middle frame shell, the partition plate and the front cover enclose to form a control cavity for accommodating the control mechanism, and the partition plate and the rear cover enclose to form an electric cavity for accommodating the first conductive component and the second conductive component.

The beneficial effects of the technical scheme are as follows: the first conductive component and the second conductive component can be switched on and off under the action of the control mechanism, so that the conductive and power-off functions of the relay are realized. The control mechanism can maintain a larger maintaining force through the power piece and the transmission assembly, so that the second conductive assembly and the second conductive assembly can maintain the current state without being influenced.

Further, the power piece is the motor, be provided with the fixing on the baffle the cardboard of motor, the cardboard block in the both sides of motor, drive assembly is including worm, worm wheel, intermediate gear and the sector gear of meshing in proper order, the worm with the transmission shaft of motor is fixed to be linked to each other, the sector gear eccentric connection has a connecting rod, the connecting rod keep away from the one end of sector gear with the driving lever links to each other. The transmission of the worm wheel and the worm has self-locking performance, so that the control mechanism has good holding capacity.

Further, a butt joint pin is arranged on the deflector rod, a bar-shaped hole sleeved with the butt joint pin is arranged on the connecting rod, and the connecting rod drives the deflector rod to move through the butt joint pin.

Further, the poking rod is provided with poking forks which are in one-to-one correspondence with the conductive elastic sheets, and the end parts of the conductive sheets are provided with poking sheets which extend into the poking forks.

Further, the baffle is provided with a yielding hole for the poking fork to pass through.

Further, the conductive elastic sheet comprises a plurality of metal sheets which are overlapped and manufactured, a bending part is arranged in the middle of the conductive elastic sheet, two ends of the metal sheets are pressed together, and gaps are formed between the metal sheets in the bending part. The multilayer overlapped metal sheets have good elasticity and are not easy to damage.

Further, a travel switch is arranged on the path of the deflector rod in the control cavity. The travel switch that sets up can assist in judging the position of current driving lever, and then judges the break-make condition of first conductive component and second conductive component.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of the front cover according to the embodiment of the present utility model after the front cover is opened;

FIG. 3 is a schematic illustration of FIG. 2 with the lever removed;

FIG. 4 is a schematic view of the structure of the embodiment of the present utility model with the front cover and the middle frame housing removed;

FIG. 5 is a schematic structural diagram of a first conductive component and a second conductive component according to an embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a control mechanism according to an embodiment of the present utility model.

Reference numerals: the middle frame casing 100, the partition 101, the relief hole 102, the clamping plate 103, the front cover 110, the rear cover 120, the first conductive sheet 200, the stationary contact 201, the second conductive sheet 300, the conductive spring sheet 310, the bending part 311, the movable contact 312, the pulling sheet 313, the motor 400, the worm 410, the worm wheel 420, the middle gear 430, the sector gear 440, the connecting rod 450, the bar hole 451, the pulling rod 460, the docking pin 461, the pulling fork 462, and the travel switch 500.

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

As shown in fig. 1-6, the present embodiment provides a three-phase motor relay, including a first conductive assembly, a second conductive assembly, a control mechanism and a middle frame housing 100, where the first conductive assembly includes three first conductive plates 200 arranged on the middle frame housing 100 in parallel at intervals, a first end of each first conductive plate 200 extends out of the middle frame housing 100, and a second end of each first conductive plate 200 is located in the middle frame housing 100 and fixedly provided with a stationary contact 201; the second conductive assembly comprises three second conductive plates 300 arranged on the middle frame shell 100 at intervals in parallel, the second conductive plates 300 are close to the first conductive plates 200, the first ends of the second conductive plates 300 extend out of the middle frame shell 100, the second ends of the second conductive plates 300 are positioned in the middle frame shell 100 and are provided with conductive elastic pieces 310, the first ends of the conductive elastic pieces 310 are fixed on the second conductive plates 300, and the second ends of the conductive elastic pieces 310 are provided with movable contacts 312 which are communicated with the fixed contacts 201; the control mechanism comprises a deflector rod 460 for poking the conductive elastic sheet 310, the deflector rod 460 is arranged in the middle frame shell 100, a power piece for driving the deflector rod 460 to reciprocate is also arranged in the middle frame shell 100, and the power piece is connected with the deflector rod 460 through a transmission assembly; the front cover 110 and the rear cover 120 are respectively fixed on two sides of the middle frame housing 100, the partition board 101 is arranged in the middle frame housing 100, the partition board 101 and the front cover 110 enclose to form a control cavity for accommodating the control mechanism, and the partition board 101 and the rear cover 120 enclose to form an electrical cavity for accommodating the first conductive component and the second conductive component. The front cover 110 and the rear cover 120 are fastened and fixed with the middle frame shell 100, a fastening protrusion is arranged outside the middle frame shell 100, fixing lugs matched with the fastening protrusion are arranged on the outer edges of the front cover 110 and the rear cover 120, and fixing holes matched with the fastening protrusion are arranged on the fixing lugs. After the front cover 110 is fixed on the middle frame housing 100, a slide way for the shift lever 460 to slide is formed in the front cover 110 and the middle frame housing 100, and specifically, the slide way is formed by enclosing the side edge of the middle frame and the limiting plate on the front cover 110.

When the relay is used, the first conductive sheet 200 and the second conductive sheet 300 of the relay are respectively connected into a circuit, and the first conductive assembly and the second conductive assembly can be connected and disconnected under the action of the control mechanism, so that the conductive and power-off functions of the relay are realized. The control mechanism can maintain a larger maintaining force through the power piece and the transmission assembly, so that the second conductive assembly and the second conductive assembly can maintain the current state without being influenced.

In a preferred embodiment, the power component is a motor 400, the baffle 101 is provided with a clamping plate 103 for fixing the motor 400, the clamping plate 103 is clamped on two sides of the motor 400, the transmission assembly comprises a worm 410, a worm wheel 420, an intermediate gear 430 and a sector gear 440 which are meshed in sequence, the worm 410 is fixedly connected with a transmission shaft of the motor 400, the sector gear 440 is eccentrically connected with a connecting rod 450, and one end, away from the sector gear 440, of the connecting rod 450 is connected with a deflector rod 460. The transmission of the worm wheel 420 and the worm 410 has self-locking performance, so that the control mechanism has good holding capability.

When the connecting rod 450 moves, the angle between the connecting rod 450 and the deflector 460 can be changed to a certain extent, the deflector 460 is provided with a butt joint pin 461 for fault tolerance and transmission reliability, the connecting rod 450 is provided with a strip-shaped hole 451 sleeved on the butt joint pin 461, and the connecting rod 450 drives the deflector 460 to move through the butt joint pin 461. Further, the shift lever 460 is provided with shift forks 462 corresponding to the conductive spring plates 310 one by one, and the ends of the conductive plates are provided with shift pieces 313 extending into the shift forks 462. Toggle fork 462 is comprised of two parallel struts with a gap between them, extending perpendicularly outwardly from the sides of toggle lever 460.

Because the shift lever 460 is disposed in the control cavity, and the conductive spring 310 to be controlled is disposed in the electrical cavity, in order to make the shift fork 462 extend into the electrical cavity, the spacer 101 is provided with a yielding hole 102 for the shift fork 462 to pass through.

In order to increase the elasticity of the conductive spring plate 310 and prolong the service life of the conductive spring plate 310, the conductive spring plate 310 is formed by overlapping a plurality of metal sheets, a bending part 311 is arranged in the middle of the conductive spring plate 310, two ends of the metal sheets are pressed together, and the metal sheets have gaps at the bending part 311. The multilayer overlapped metal sheets have good elasticity and are not easy to damage.

After the movement of the lever 460 is changed, in order to directly acquire the state of the lever 460 from the outside, a travel switch 500 is provided in the control chamber on the path of the lever 460. The provided travel switch 500 can assist in judging the current position of the shift lever 460, so as to judge the on-off condition of the first conductive component and the second conductive component.

In the description of the present application, it is to be understood that the terminology in the present application is for the purpose of description only, and is not to be interpreted as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is two or more unless specifically defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be an electrical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, numerous specific details are set forth. However, it is understood that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, systems, and techniques have not been shown in detail in order not to obscure an understanding of this description.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.

Claims

1. A three-phase motor relay, comprising:

the first conductive assembly comprises three first conductive sheets (200) which are arranged on the middle frame shell (100) at intervals in parallel, the first ends of the first conductive sheets (200) extend out of the middle frame shell (100), and the second ends of the first conductive sheets (200) are positioned in the middle frame shell (100) and fixedly provided with static contacts (201);

the second conductive assembly comprises three second conductive sheets (300) which are arranged on the middle frame shell (100) at intervals in parallel, the second conductive sheets (300) are close to the first conductive sheets (200), the first ends of the second conductive sheets (300) extend out of the middle frame shell (100), the second ends of the second conductive sheets (300) are positioned in the middle frame shell (100) and are provided with conductive elastic sheets (310), the first ends of the conductive elastic sheets (310) are fixed on the second conductive sheets (300), and the second ends of the conductive elastic sheets (310) are provided with movable contacts (312) which are communicated with the fixed contacts (201);

the control mechanism comprises a deflector rod (460) for poking the conductive elastic sheet (310), the deflector rod (460) is arranged in the middle frame shell (100), a power piece for driving the deflector rod (460) to reciprocate is further arranged in the middle frame shell (100), and the power piece is connected with the deflector rod (460) through a transmission assembly; the method comprises the steps of,

the electric control device comprises a middle frame shell (100), wherein a front cover (110) and a rear cover (120) are respectively fixed on two sides of the middle frame shell (100), a partition board (101) is arranged in the middle frame shell (100), the partition board (101) and the front cover (110) enclose to form a control cavity for accommodating a control mechanism, and the partition board (101) and the rear cover (120) enclose to form an electric cavity for accommodating a first conductive component and a second conductive component.

2. The three-phase motor relay according to claim 1, wherein the power piece is a motor (400), a clamping plate (103) for fixing the motor (400) is arranged on the partition plate (101), the clamping plate (103) is clamped on two sides of the motor (400), the transmission assembly comprises a worm (410), a worm wheel (420), an intermediate gear (430) and a sector gear (440) which are meshed in sequence, the worm (410) is fixedly connected with a transmission shaft of the motor (400), a connecting rod (450) is eccentrically connected with the sector gear (440), and one end, away from the sector gear (440), of the connecting rod (450) is connected with the deflector rod (460).

3. A three-phase motor relay according to claim 2, wherein the shift lever (460) is provided with a butt joint pin (461), the connecting rod (450) is provided with a bar-shaped hole (451) sleeved on the butt joint pin (461), and the connecting rod (450) drives the shift lever (460) to move through the butt joint pin (461).

4. A three-phase motor relay according to any one of claims 1-3, characterized in that the shift lever (460) is provided with shift forks (462) in one-to-one correspondence with the conductive spring pieces (310), and the ends of the conductive plates are provided with shift pieces (313) extending into the shift forks (462).

5. A three-phase motor relay according to claim 4, characterized in that the partition (101) is provided with a relief hole (102) for the passage of the toggle fork (462).

6. The three-phase motor relay according to claim 1, wherein the conductive spring plate (310) is made of a plurality of overlapped metal sheets, a bending portion (311) is arranged in the middle of the conductive spring plate (310), two ends of the metal sheets are pressed together, and a gap is formed between the metal sheets at the bending portion (311).

7. A three-phase motor relay according to claim 1, characterized in that a travel switch (500) is provided in the control chamber in the path of the lever (460).