CN210403610U

CN210403610U - Magnetic latching relay with microswitch

Info

Publication number: CN210403610U
Application number: CN201921729165.7U
Authority: CN
Inventors: 钟叔明; 廖国进; 代文广; 李方能
Original assignee: Xiamen Hongfa Electric Power Controls Co Ltd
Current assignee: Xiamen Hongfa Electric Power Controls Co Ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-04-24
Anticipated expiration: 2029-10-15

Abstract

The utility model discloses a magnetic latching relay with micro-gap switch, including insulating housing and micro-gap switch, insulating housing is linked firmly by base and lid and forms, and the pin joint has armature subassembly on the base, and the base is equipped with an assembly area that holds micro-gap switch near armature subassembly one end department, and micro-gap switch casing butt is in assembly area bottom and fix a position through this assembly area, and one side part that micro-gap switch casing is close to armature subassembly is unsettled, and the unsettled lower space of micro-gap switch casing gives the removal of armature subassembly and/or push card and lets the position, and the lid pushes down the micro-gap switch casing; one end of the armature component extends to one side of the cover body to form a pressure rod, and when the armature component rotates, the pressure rod presses the micro switch to trigger the reed or releases the micro switch to trigger the reed. Furthermore, two positioning columns are arranged at the bottom of the assembling area, and each positioning column is inserted into one mounting hole in the microswitch. The utility model discloses compact structure for the magnetic latching relay volume of addding micro-gap switch is less.

Description

Magnetic latching relay with microswitch

Technical Field

The utility model belongs to the technical field of the magnetic latching relay manufacturing technology and specifically relates to a magnetic latching relay with micro-gap switch.

Background

The magnetic latching relay is a novel relay developed in recent years and is also an automatic switch. As with other electromagnetic relays, it acts to automatically turn on and off the circuit. The magnetic latching relay has the advantages that the normally closed state or the normally open state of the magnetic latching relay completely depends on the action of permanent magnetic steel, and the switching state of the magnetic latching relay is triggered by pulse electric signals with certain width to complete the switching.

Existing magnetically held relays typically include a plastic housing, a plurality of conductive pins, a magnetic circuit system, a contact system, and a push mechanism. The conductive pins, the magnetic circuit system, the contact system and the pushing mechanism are all arranged on the plastic shell. The magnetic circuit system generally comprises a yoke, a coil and an armature assembly, the contact system comprises a movable spring and a static spring, the movable spring is provided with a movable contact, the static spring is provided with a static contact, the pushing mechanism comprises a pushing card, the armature assembly is connected with the pushing card, the pushing card is connected with the movable spring part, one end of a conductive leading-out pin in the shell is fixedly connected with the movable spring and the static spring, when a relay coil is energized with positive pulse voltage, the magnetic circuit system works, the armature assembly drives the pushing card, the pushing card pushes the movable spring to move, the movable contact is contacted with the static contact, and the relay is in an on state; when the coil of the relay is energized with reverse pulse voltage, the magnetic circuit system works again, the armature component drives the pushing clamp to return, the pushing clamp pulls the moving spring to return, the moving contact is separated from the static contact, the contact is disconnected, and the relay is in a cut-off state.

In order to judge whether a movable contact and a fixed contact of the magnetic latching relay are in a combined state or in a separated state, a microswitch is arranged in part of the magnetic latching relay, and the state between the movable contact and the fixed contact is judged by closing or opening the contact of the microswitch.

For example, a patent number ZL201210198058.2, named as: the invention relates to a three-closing force magnetic latching relay capable of monitoring the opening and closing states of a movable contact and a fixed contact, which belongs to the Chinese patent application and comprises a shell, a coil component, a rotary armature component, a combined pushing card, a movable reed, a movable contact and the fixed contact, wherein a compressed duplex spring is arranged at the back of the movable contact on the movable reed, and the duplex spring is formed by connecting two spiral springs into a whole through a steel wire at the bottom; the back of the movable contact on the movable spring is also provided with a Z-shaped pressure spring piece, the upper part of the pressure spring piece is attached to the surface of the movable spring behind the movable contact, and the lower part of the pressure spring piece is clamped into the combined pushing card; the upper surface of the combined pushing card is provided with a convex block; the shell corresponding to the position of the bump is provided with a microswitch connected with an external display device. The invention has the function of monitoring the opening and closing states of the movable contact and the fixed contact, so that the external display device can display the closed or opened state of the external display device. However, due to the fact that the microswitch is additionally arranged on the magnetic latching relay, the size of a shell of the magnetic latching relay is increased, and the arrangement difficulty of the magnetic latching relay with the microswitch on electrical equipment is also increased.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a magnetic latching relay with micro-gap switch, its compact structure for the magnetic latching relay volume of addding micro-gap switch is less, and does benefit to the automatic assembly who realizes micro-gap switch.

In order to achieve the above purpose, the technical scheme of the utility model is that: a magnetic latching relay with a microswitch comprises an insulating shell and the microswitch, wherein the insulating shell is formed by fixedly connecting a base and a cover, a magnetic circuit system, a push card and a contact system are arranged on the base, the magnetic circuit system comprises an armature component, the middle part of the armature component is pivoted on the base, the contact system comprises a movable contact and a fixed contact, the armature component is connected with the push card and drives the movable contact of the contact system to enable the movable contact to be jointed with or separated from the fixed contact through the push card, an assembly area for accommodating the microswitch is arranged at one end of the base close to the armature component, the bottom surface of the microswitch shell is abutted against the bottom of the assembly area and is positioned through the assembly area, one side part of the microswitch shell close to the armature component is suspended, the lower suspended space of the microswitch shell gives a moving abdication for the armature component and/or the push card, and the cover is fixedly connected on, the cover body presses the microswitch shell;

one end of the armature component extends to one side of the cover body to form a pressure rod, and when the armature component rotates, the pressure rod presses the micro switch to trigger the reed or releases the micro switch to trigger the reed.

The bottom of the assembly area is provided with two positioning columns, and each positioning column is inserted into one mounting hole in the microswitch when the microswitch is mounted in the assembly area; the two positioning columns are parallel to the pressing rod. Therefore, the positioning and the assembly of the microswitch are more convenient.

Furthermore, the positioning column comprises a cylinder, and a plurality of positioning convex parts are arranged on the peripheral surface of the cylinder at intervals along the radial direction of the cylinder; each positioning convex part is in a long strip shape and is distributed along the axial direction of the cylinder.

In a further improvement, a limiting column for limiting the displacement of the micro-switch shell is arranged at the bottom of the assembling area beside one positioning column. Therefore, the micro switch shell is prevented from overturning and shifting through the limiting of the limiting column.

The distance between the bottom surface of the shell of the microswitch and the bottom surface of the base is further improved to be larger than the distance between the upper surface of one end, connected with the armature component, of the push card and the bottom surface of the base, so that one end of the push card does not interfere with the microswitch when moving. So as to facilitate the arrangement of the abdicating and pushing the card of the microswitch. The structure is further compact.

In a further improvement, the bottom of the assembly area is formed by the upper end face of a lug on the base, and one side of the lug, which is close to the armature component, is in a step shape. This may better give way for the armature assembly to rotate and for the card to move.

The improved microswitch is characterized in that a limiting rib is arranged on the inner side surface of the cover body, and when the cover body is fixedly connected to the base, the limiting rib presses the microswitch shell.

In a further improvement, a plurality of conductive plug terminals of the micro switch are bent and then penetrate out of the cover body or the bottom of the base. The installation of the relay and the connection of the conductive insertion end of the microswitch are facilitated.

Furthermore, when a plurality of conductive plug terminals of the micro switch are bent and then penetrate out of the bottom of the base, a terminal extension piece is fixedly connected onto the conductive plug terminals and comprises an I-shaped frame, insulators are arranged at two ends of the I-shaped frame, a plurality of conductive extension pins penetrate through two ends of the I-shaped frame at intervals, the plurality of conductive plug terminals of the micro switch are inserted into one end of the I-shaped frame at intervals, and each conductive plug terminal of the micro switch is in contact with one conductive extension pin; the base is in the bottom in assembly area is equipped with a through-hole, and the through-hole runs through the bottom of base, the I-shaped frame inlays in the through-hole, many the base is worn out to the one end of electrically conductive extension pin. The terminal extension piece is used for prolonging the length of the conductive plug terminal, ensuring the strength of the conductive plug terminal and ensuring the plug reliability.

Preferably, the contact system comprises two movable springs and two static springs, the movable contact is arranged on each movable spring, the static contact is arranged on each static spring, the number of the push clamps is two, one end of each push clamp is provided with a clamping groove, a matching hole is formed in each push clamp below the clamping groove, the two ends of the armature component are provided with clamping portions, each clamping portion is matched with the clamping groove at one end of one push clamp and inserted into the matching hole, the other end of each push clamp is connected with one end of one movable spring, and the other end of each movable spring is connected with a conductive leading-out pin. Therefore, the armature component can drive two groups of movable and static contacts of the contact system to be combined or separated through the two pushing clamps.

In a further improvement, one end of the armature component extends to one side far away from the micro switch, and the pressure rod is arranged at one end of the support part far away from the micro switch. Therefore, the microswitch can be better abducted, so that the whole structure is more compact.

The utility model discloses because the base is equipped with an assembly area that holds micro-gap switch near armature subassembly one end, micro-gap switch casing butt is in assembly area bottom and fix a position through this assembly area, one side part that micro-gap switch casing is close to armature subassembly is unsettled, the unsettled lower space of micro-gap switch casing gives armature subassembly and/or the removal of propelling movement card to step over, when the lid links firmly on the base, the lid pushes down the micro-gap switch casing; one end of the armature component extends to one side of the cover body to form a pressure rod, and when the armature component rotates, the pressure rod presses the micro switch to trigger the reed or releases the micro switch to trigger the reed. On one hand, the microswitch can be arranged closer to the armature component, and the residual space on the base is fully utilized, so that the overall structure of the relay is compact, and the volume of the magnetic latching relay after the microswitch is added is smaller; on the other hand, the microswitch shell is abutted against the bottom of the assembling area and is positioned through the assembling area, and then the cover body presses the microswitch shell; therefore, the mechanical arm can conveniently grab the microswitch and the cover body for assembly, the automatic assembly of the microswitch is facilitated, and the manufacturing cost is reduced.

Drawings

FIG. 1 is a top perspective view of a first embodiment of the present invention;

fig. 2 is an exploded perspective view of a first embodiment of the present invention;

FIG. 3 is an enlarged view at A of FIG. 2;

FIG. 4 is a bottom perspective view of the first embodiment of the present invention with the base, micro-switch and a stationary spring concealed;

FIG. 5 is a perspective view of a base according to a first embodiment of the present invention;

FIG. 6 is an enlarged view at B of FIG. 5;

fig. 7 is a perspective view of an armature assembly according to a first embodiment of the present invention;

FIG. 8 is a perspective view of a micro-gap switch according to a first embodiment of the present invention;

fig. 9 is a top perspective view of the hidden cover and magnetic circuit of the first embodiment of the present invention;

FIG. 10 is a perspective view of a second embodiment of the present invention showing the hidden base, cover and a stationary spring plate;

fig. 11 is a bottom perspective view of a second embodiment of the concealed cover of the present invention;

figure 12 is a top perspective view of a base according to a second embodiment of the present invention;

fig. 13 is a perspective view of the microswitch and the terminal extension piece according to the second embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Embodiment one, as shown in fig. 1 to 9, a magnetic latching relay with a micro switch includes an insulating housing 1 and a micro switch 2, the insulating housing 1 is formed by fixedly connecting a base 11 and a cover 12 by clamping, the base 11 and the cover 12 are both made of plastic materials by injection molding, a magnetic circuit system 3, two push clamps 4 and a contact system 5 are mounted on the base 11, the magnetic circuit system 3 includes an armature assembly 31, a coil 32 and a yoke 33, the yoke 33 is fixedly connected to a coil rack, the coil 32 and the yoke 33 are fixed on one side of the base 11, the middle portion of the armature assembly 31 is pivoted on the base 11 and beside the coil 32, a pivot shaft 311 extends outwards from the middle of the upper end and the lower end of the armature assembly 31, the central axes of the two pivot shafts 311 are overlapped, one pivot shaft 311 is inserted into a pivot hole 111 of the base 11, the other pivot shaft 311 is matched with a sleeve hole 341 of a press block, two ends of the pressing block 34 are fixedly connected with the base 11. The armature on the armature assembly 31 cooperates with the yoke 33.

The contact system 5 comprises two movable spring pieces 51 and two fixed spring pieces 52, the two movable spring pieces 51 have the same structure and are provided with two movable contacts 511, the two fixed spring pieces 52 have different structures, the specific structure is shown in fig. 2, but each fixed spring piece 52 is provided with two fixed contacts 521; the number of the push cards 4 is two, one end of each push card 4 is provided with a clamping groove 41, the push card 4 below the clamping groove 41 is provided with a matching hole 42, two ends of the armature component 31 are both provided with clamping parts 312, each clamping part 312 is generally cylindrical, each clamping part 312 is matched with the clamping groove 41 at one end of one push card 4 and is inserted into the matching hole 42, the other end of each push card 4 is connected with one end of one movable spring 51, and the other end of each movable spring 51 is connected with a conductive leading-out pin 512; the conductive pin 512 connected to the other end of each movable contact spring 51 has a different structure, which is described in detail in fig. 2.

As can be seen from the above structure, the contact system 5 is provided with two sets of corresponding movable contacts 511 and fixed contacts 521, two ends of the armature assembly 31 are respectively connected with one pushing card 4 through one clamping portion 312, and the two sets of movable contacts 511 and fixed contacts 521 on the contact system 5 are simultaneously driven to be mutually jointed or separated through the two pushing cards 4; the circuit is switched on and off.

The base 11 is provided with an assembly area 112 for accommodating the micro switch 2 at one end close to the armature assembly 31, the housing of the micro switch 2 abuts against the bottom of the assembly area 112 and is positioned through the assembly area 112, the bottom of the assembly area 112 is provided with two positioning columns 1a, and when the micro switch 2 is installed in the assembly area 112, each positioning column 1a is inserted into one installation hole 21 on the micro switch 2; each positioning column 1a comprises a cylinder, a plurality of positioning convex parts 11a are arranged on the peripheral surface of the cylinder at intervals along the radial direction of the cylinder, and each positioning convex part 11a is long-strip-shaped and is distributed along the axial direction of the cylinder. This facilitates insertion of the positioning post 1a into the mounting hole 21 of the microswitch 2 and ensures the fitting accuracy. The bottom of the assembly area 112 is provided with a limiting column 1b for limiting the displacement of the shell of the micro-switch 2 beside one of the positioning columns 1 a. The micro switch 2 can be prevented from tilting, overturning and shifting through the limiting column 1 b.

When the cover body 12 is fixedly connected on the base 11, the cover body 12 presses the shell of the microswitch 2; the method specifically comprises the following steps: a limiting rib 121 is arranged on the inner side surface of the cover 12, and when the cover 12 is fixedly connected to the base 11, the limiting rib 121 presses the casing of the microswitch 2.

The touch reed 22 of the microswitch 2 is arranged close to the armature component 31, one end of the armature component 31 extends to one side of the cover body 12 to form a pressure lever 313, and the pressure lever 313 is parallel to the two positioning columns 1 a; when the armature component 31 rotates, the pressure rod 313 presses the micro switch 2 to trigger the reed 22 or releases the micro switch 2 to trigger the reed 22.

The three conductive plug terminals 23 of the microswitch 2 are bent by 90 degrees and then pass out of the cover body 12.

As further shown in fig. 2, 7 and 9, a side portion of the casing of the microswitch 2, which is close to the armature assembly 31, is suspended, a lower suspended space of the casing of the microswitch 2 gives the way for the movement of the armature assembly 31 and the push card 4, and a distance from the bottom surface of the casing of the microswitch 2 to the bottom surface of the base 11 is greater than a distance from the upper surface of one end of the push card 4, which is connected with the armature assembly 31, to the bottom surface of the base 11, so that one end of the push card 4 is displaced without interfering with the microswitch 2; the bottom of the assembly area 112 is formed by the upper end surface of a projection 113 on the base 11, and one side of the projection 113 close to the armature component 31 is in a step shape. This allows the armature assembly 31 and the pusher card 4 to be moved out of the way better, making the overall structure more compact.

One end of the armature assembly 31 extends to a supporting portion 314 towards the side far away from the micro switch 2, and the pressing rod 313 is arranged at one end of the supporting portion 314 far away from the micro switch 2. This allows the microswitch 2 to be positioned closer to the armature assembly 31, resulting in a more compact configuration.

When the armature assembly 31 of the present embodiment rotates counterclockwise, the two sets of moving contacts 511 and the fixed contacts 521 on the contact system 5 are separated from each other; the pressure lever 313 presses the micro switch 2 to touch the reed 22, so that the micro switch 2 acts, and the micro switch 2 transmits one state to the outside through the conductive plug-in terminal 23; when the armature assembly 31 of the present embodiment rotates clockwise, two sets of moving contacts 511 and the fixed contacts 521 on the contact system 5 are engaged with each other, the pressing rod 313 releases the micro switch 2 to touch the spring 22, the micro switch 2 is reset and does not act, and the micro switch 2 also transmits another state to the outside through the conductive plug-in terminal 23; therefore, the working state of the contactor can be conveniently judged by judging the state of the microswitch.

In a second embodiment, and as shown in fig. 10 to 13, a magnetic latching relay with a micro switch is different from the first embodiment in that: two conductive plug terminals 23 are arranged on the micro switch 2, and the two conductive plug terminals 23 of the micro switch 2 are bent by 90 degrees and then penetrate out from the bottom of the base 11. In order to use the existing microswitch and reduce the cost, two conductive plug terminals 23 of the microswitch 2 can penetrate out from the bottom of the base 11, the two conductive plug terminals 23 are fixedly connected with a terminal extension piece 6, the terminal extension piece 6 comprises an I-shaped frame 61, two ends of the I-shaped frame 61 are insulators, two conductive extension pins 62 penetrate through two ends of the I-shaped frame 61 at intervals, the two conductive plug terminals 23 of the microswitch 2 are inserted into one end of the I-shaped frame 61 at intervals, and each conductive plug terminal 23 of the microswitch 2 is in contact with one conductive extension pin 62;

the base 11 is provided with a through hole 1c at the bottom of the assembly area 112, the through hole 1c penetrates through the bottom of the base 11, the i-shaped frame 61 is embedded in the through hole 1c, and one end of each of the two conductive extension pins 62 penetrates through the base 11.

The above are only two preferred embodiments of the present invention, and those skilled in the art will be able to make equivalent changes in the claims and fall within the scope of the present invention.

Claims

1. The utility model provides a magnetic latching relay with micro-gap switch, including insulating housing and micro-gap switch, insulating housing is linked firmly by base and lid and forms, is equipped with magnetic circuit on the base, promotes card and contact system, and magnetic circuit includes the armature subassembly, and the middle part pin joint of armature subassembly is on the base, and contact system includes movable contact and stationary contact, and the armature subassembly is connected and is pushed the card and make movable contact and stationary contact joint or separation, its characterized in that through the movable contact that promotes card drive contact system:

the base is provided with an assembly area for accommodating a microswitch at one end close to the armature component, the microswitch shell is abutted against the bottom of the assembly area and is positioned through the assembly area, one side of the microswitch shell close to the armature component is partially suspended, the suspended lower space of the microswitch shell gives the movement abdication to the armature component and/or the push card, and the cover presses the microswitch shell when the cover is fixedly connected to the base;

2. The magnetic latching relay with microswitch of claim 1, wherein: two positioning columns are arranged at the bottom of the assembly area, and each positioning column is inserted into one mounting hole in the microswitch when the microswitch is mounted in the assembly area; the two positioning columns are parallel to the pressing rod.

3. The magnetic latching relay with microswitch of claim 2, wherein: the positioning column comprises a cylinder, and a plurality of positioning convex parts are arranged on the peripheral surface of the cylinder at intervals along the radial direction of the cylinder; each positioning convex part is in a long strip shape and is distributed along the axial direction of the cylinder.

4. The magnetic latching relay with microswitch of claim 2, wherein: and a limiting column for limiting the displacement of the micro-switch shell is arranged at the bottom of the assembly area beside one positioning column.

5. The magnetic latching relay with microswitch of claim 1, wherein: the distance between the bottom surface of the microswitch shell and the bottom surface of the base is larger than the distance between the upper surface of one end, connected with the armature component, of the push card and the bottom surface of the base, so that one end of the push card does not interfere with the microswitch when moving.

6. The magnetic latching relay with microswitch of claim 1, wherein: the bottom of the assembly area is formed by the upper end face of a convex block on the base, and one side of the convex block, which is close to the armature component, is in a step shape.

7. The magnetic latching relay with microswitch of claim 1, wherein: the inner side surface of the cover body is provided with a limiting rib, and when the cover body is fixedly connected to the base, the limiting rib presses the micro-switch shell.

8. The magnetic latching relay with microswitch of claim 1, wherein: a plurality of conductive plug terminals of the micro switch are bent and then penetrate out of the cover body or the bottom of the base.

9. The magnetic latching relay with microswitch of claim 8, wherein: when a plurality of conductive plug terminals of the microswitch are bent and then penetrate out of the bottom of the base, the conductive plug terminals are fixedly connected with a terminal extension piece which comprises an I-shaped frame, insulators are arranged at two ends of the I-shaped frame, a plurality of conductive extension pins penetrate through two ends of the I-shaped frame at intervals, the plurality of conductive plug terminals of the microswitch are inserted into one end of the I-shaped frame at intervals, and each conductive plug terminal of the microswitch is contacted with one conductive extension pin;

the base is in the bottom in assembly area is equipped with a through-hole, and the through-hole runs through the bottom of base, the I-shaped frame inlays in the through-hole, many the base is worn out to the one end of electrically conductive extension pin.

10. The magnetic latching relay with microswitch of claim 1, wherein: the contact system comprises two movable springs and two static springs, wherein each movable spring is provided with the movable contact, each static spring is provided with the static contact, the number of the push clamps is two, one end of each push clamp is provided with a clamping groove, the push clamp below the clamping groove is provided with a matching hole, the two ends of the armature component are provided with clamping parts, each clamping part is matched with the clamping groove at one end of one push clamp and inserted into the matching hole, the other end of each push clamp is connected with one end of one movable spring, and the other end of each movable spring is connected with a conductive leading-out pin.

11. A magnetic latching relay with a microswitch according to any one of claims 1 to 10, wherein: one end of the armature component extends to one side far away from the micro switch, and the pressure rod is arranged at one end of the support part far away from the micro switch.