CN219144080U

CN219144080U - Magnetic latching relay capable of reducing time rebound

Info

Publication number: CN219144080U
Application number: CN202223611810.XU
Authority: CN
Inventors: 刘衍聪; 胡齐亮; 金锦建
Original assignee: Zhejiang Meishuo Electric Technology Co ltd
Current assignee: Zhejiang Meishuo Electric Technology Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-06
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses a magnetic latching relay capable of reducing time rebound, which comprises a movable spring part and a static spring part which are oppositely arranged on a base, wherein the static spring part is provided with a first end extending out of the base and a second end fixed in the base, the static spring part is provided with an open pore structure in an extending way along the length direction, a static buffer sheet is formed at one end of the open pore structure, the static buffer sheet extends in the same direction as the open pore structure and is accommodated in the open pore structure, the closing rebound time between contacts can be reduced by utilizing the static buffer sheet, the static buffer sheet is integrally connected with the second end of the static spring part according to the design that the static buffer sheet is formed at one end of the open pore structure, when the movable contact and the static contact of the magnetic latching relay are in closed contact, current is transmitted to the second end through the static buffer sheet and then flows to the first end along the static spring part, so that the passing distance and the sectional area of the current on the static spring part are increased, the temperature rise of the static spring during working is reduced, and the service life of the static spring is prolonged.

Description

Magnetic latching relay capable of reducing time rebound

Technical Field

The utility model relates to the technical field of relays, in particular to a magnetic latching relay capable of reducing time rebound.

Background

The electronic control device plays roles of automatic regulation, safety protection, switching circuit and the like in a circuit, the normally closed or normally open state of the magnetic latching relay is completely dependent on the role of permanent magnet steel, and the switching state is switched by triggering by a pulse electric signal with a certain width.

The structure of the existing magnetic latching relay comprises a base, a magnetic circuit assembly, a push piece and a reed assembly, wherein the reed assembly comprises a static spring with a static contact and a movable spring with a movable contact. For example, chinese patent document CN208889585U discloses a switch assembly of a magnetic latching relay, which comprises a movable spring and a fixed spring, wherein the movable spring comprises a movable spring seat and a movable spring, the movable spring comprises a movable spring leaf, a lining spring and an outer lining spring which are sequentially overlapped, a movable spring leaf connecting end, a base fixing end and a movable contact connecting part are formed on the movable spring leaf, a first pressing piece is formed on the movable spring leaf, the first pressing piece is abutted against the movable spring leaf to press the movable spring leaf to the lining spring and the outer lining spring through a reaction force, and the first pressing piece is formed by forming a slot on the movable spring leaf; in addition, the static spring is provided with a mounting hole, a mounting sheet is formed on the inner wall of the mounting hole, and the movable contact is arranged on the mounting sheet.

As can be seen from the structure of the magnetic latching relay described above, it still has the following problems: 1. the mounting sheet is formed on the inner wall of the upper side of the mounting opening, so that the distance that current flows to the static spring through the mounting sheet is short, the sectional area is small, the temperature rise of the static spring is not reduced, and the service life of the static spring is influenced; 2. according to the compressing sheet, the compressing sheet is arranged on one side of the movable spring sheet, and a linear groove is formed between the compressing sheet and the movable spring sheet, so that the single-side action amplitude is large when the compressing sheet is acted by the pushing sheet, the stress transmission between the compressing sheet and the movable spring sheet is not balanced enough, the actuation is easy to conduct, the static contact is stressed at a position which is not in the middle, and the situation of deflection contact is caused, the contact stability is poor, and the electric life of a product is reduced.

Disclosure of Invention

The utility model aims to solve the problems that the distance of current flowing to a static spring through a mounting sheet when a contact is closed by a magnetic latching relay in the prior art is short, the sectional area is small, the temperature rise of the static spring is not reduced, and the service life of the static spring is influenced.

In order to solve the above problems, the present utility model provides a magnetic latching relay for reducing time rebound, which comprises a movable spring component and a static spring component which are oppositely arranged on a base, wherein the static spring component is provided with a first end extending out of the base and a second end fixed in the base relative to the first end, the static spring component is provided with an open hole structure in a extending way along the length direction, one end of the open hole structure is provided with a static buffer sheet, the static buffer sheet is provided with a static contact opposite to the movable contact, the static buffer sheet and the open hole structure extend in the same direction and are accommodated in the open hole structure, and the second end is positioned at one end of the open hole structure and is integrally connected with the static buffer sheet.

As a preferable scheme, the static buffer sheet comprises a connecting part connected with the second end and a contact part which is bent downwards by the connecting part and is formed by extending along the length direction of the open pore structure, and the static contact is arranged on the contact part.

As a preferable scheme, a gap is reserved between two sides of the static buffer sheet and two side walls of the open pore structure, and the contact part is arranged opposite to the other end of the open pore structure.

As a preferred embodiment, the contact part is higher than the bottom surface of the static spring part.

As a preferred scheme, the movable spring part is connected with the push rod, the push rod is driven by the armature structure to reciprocate in the base, the movable spring part comprises a movable contact plate, an upper spring plate, a middle spring plate and a lower spring plate which are arranged on the movable contact plate in a superposition mode, one ends of the upper spring plate, the middle spring plate and the lower spring plate are jointly fixed on the movable contact plate, movable contacts are arranged at the other ends of the upper spring plate, the middle spring plate and the lower spring plate, the lower spring plate is connected with the push rod through a connecting structure, the connecting structure comprises a limit notch formed in the push rod, a driving spring plate which is bent towards one side of the middle spring plate and is formed at the other end of the lower spring plate, the driving spring plate is inserted into the limit notch and is pressed on the push rod, and elastic pressure is applied to the upper spring plate and the middle spring plate when the driving spring plate is pushed by the push rod.

As a preferable scheme, the driving spring plate is integrally connected to the other end of the lower spring plate in an inclined structure.

As a preferable scheme, the driving spring plate and the middle spring plate are connected to form a certain included angle, and the middle spring plate and the upper spring plate respectively extend through the limiting notch.

As a preferable scheme, the push rod comprises an upper limit table and a lower limit table which are formed on two sides of the limit notch, the length of the upper limit table is larger than that of the lower limit table, the upper reed penetrates through the limit notch and is matched and abutted with the upper limit table, and one side edge of the driving elastic sheet is abutted to the lower limit table.

As a preferable scheme, the driving spring plate is provided with a through hole structure which is suitable for accommodating the other end of the lower spring plate and corresponds to the movable contact point.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

1. in the magnetic latching relay for reducing time rebound, two ends of the static spring component are respectively provided with the first end and the second end which penetrate through the inside and the outside of the base, the second end of the static spring component is integrally connected with the first end of the static spring component according to the forming of the static buffer piece at one end of the open pore structure, when the movable contact and the static contact of the magnetic latching relay are in closed contact, current is transmitted to the second end through the static buffer piece and then flows to the first end along the static spring component, so that a current path passing through the static contact, the static buffer piece and the second end and then reaching the first end is formed, the passing distance and the cross section of the current on the static spring component are increased, the temperature rise of the static spring during working is reduced, and the service life of the static spring is prolonged.

2. According to the magnetic latching relay capable of reducing time rebound, the static spring component is provided with the open pore structure in the extending mode along the length direction, the static buffer piece which extends in the same direction as the open pore structure is formed at one end of the open pore structure, and the static contact is arranged on the static buffer piece.

3. According to the magnetic latching relay for reducing time rebound, the movable spring part consists of the upper spring, the middle spring and the lower spring which are overlapped on the movable contact plate, the other end of the lower spring is bent towards one side of the middle spring to form the driving spring, the driving spring is inserted into the limit notch and is pressed against the push rod, so that the connection between the lower spring and the push rod is realized, the driving spring and the lower spring are integrally formed, the driving spring can directly and effectively transmit force to the lower spring when the driving spring is acted by the push rod, the phenomenon that the single-side action amplitude of the driving spring is large is avoided, the force transmission is more balanced and reliable, the action reliability of the lower spring is improved, the upper spring and the middle spring are exerted with elastic pressure under the driving of the push rod, and the contact pressure is provided for closing the movable contact and the static contact, so that the movable contact and the static contact are in stressed contact at the middle position and the situation of deflection contact is not generated, the contact stability is good, and the electric service life of a product is facilitated.

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.

FIG. 1 is a schematic plan view of a magnetic latching relay provided by the present utility model;

FIG. 2 is a schematic view of the structure of the static spring assembly of the present utility model;

FIG. 3 is a schematic view of the mounting structure between the moving spring member and the push rod of the present utility model;

FIG. 4 is a side view of the moving spring component and pushrod shown in FIG. 3;

FIG. 5 is a schematic view of the structure of the moving spring member of the present utility model;

reference numerals illustrate: 1. a moving spring member; 11. a movable contact plate, 12 and an upper reed; 13. a middle reed; 14. a lower reed; 15. a driving spring plate; 2. a stationary spring member; 21. a first end; 22. a second end; 23. an open cell structure; 3. a static buffer sheet; 31. a connection part; 32. a contact portion; 4. a base; 5. a push rod; 51. a limit notch; 52. an upper limit table; 53. a lower limit table; 6. an armature structure; 7. an electromagnetic coil; 8. a yoke.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1

The present embodiment provides a magnetic latching relay for reducing time rebound as shown in fig. 1-5, comprising a movable spring part 1 and a static spring part 2 oppositely arranged on a base 4, wherein the static spring part 2 is provided with a first end 21 extending out of the base 4 and a second end 22 fixed in the base 4 relative to the first end 21, the static spring part 2 is provided with an open hole structure 23 along the length direction, a static buffer sheet 3 is formed at one end of the open hole structure 23, a static contact is arranged on the static buffer sheet 3, the static buffer sheet 3 extends along the same direction as the open hole structure 23 and is accommodated in the open hole structure 23, and the second end 22 is positioned at one end of the open hole structure 23 and is integrally connected with the static buffer sheet 3. When the movable contact is in closed contact with the fixed contact, the static buffer sheet 3 is impacted to generate elastic swing in the open pore structure 23, so that the closed contact of the movable contact and the static contact is buffered, the rebound time of the contact is reduced, the ablation degree of arc discharge to the contact caused by rebound is further reduced, and the service lives of the static spring component and the movable spring component are greatly prolonged.

According to the embodiment, the two ends of the static spring component 2 are the first end and the second end penetrating through the inside and the outside of the base respectively, the static buffer sheet 3 is integrally connected with the second end of the static spring component 2 at one end of the open pore structure according to the forming of the static buffer sheet 3, when the movable contact and the static contact of the magnetic latching relay are in closed contact, current is transmitted to the second end 22 through the static buffer sheet 3 and then flows to the first end 21 along the static spring component, so that a current path passing through the static contact, the static buffer sheet and the second end and then reaching the first end is formed, the passing distance and the cross section of the current on the static spring component are increased, the temperature rise of the static spring during working is reduced, and the service life of the static spring is prolonged.

As a preferred embodiment, referring to fig. 5, the static buffer blade 3 includes a connecting portion 31 connected to the second end 22, and a contact portion 32 formed by bending the connecting portion 31 downward and extending along the length direction of the open hole structure 23, the static contact is disposed on the contact portion 32, the contact portion 32 is higher than the bottom surface of the static spring component 2, and the static buffer blade 3 is used to generate vibration in the opening structure to buffer kinetic energy when the dynamic contact and the static contact strike contact, wherein a gap is left between two sides of the static buffer blade 3 and two side walls of the open hole structure 23, the contact portion 32 is disposed opposite to the other end of the open hole structure 23, only the connecting portion is connected to one end of the open hole structure, according to the second end of the static spring component 2 is connected to one end of the open hole structure 23, and the first end is used for connecting a circuit board, so that current passes through the contact portion 32 and the connecting portion 31 to reach the second end and then flows to the first end to increase the current passing cross-sectional area, thereby improving the conductive performance of the static spring component.

The magnetic latching relay in the embodiment comprises a base 4, a magnetic circuit structure, a contact structure and a transmission structure, wherein the magnetic circuit structure comprises a solenoid 7, a yoke 8 and an armature structure 6, the contact structure is composed of a movable spring part 1 and a fixed spring part 2, the transmission structure comprises a push rod 5 connected with the armature structure 6 and the movable spring part 1, and the push rod 5 drives a movable contact of the movable spring part 1 to be contacted with or separated from a fixed contact of the fixed spring part 2 under the driving of the armature structure.

The following describes in detail the specific arrangement of the moving spring component with reference to fig. 1 and 3-5:

the movable spring part 1 is connected with the push rod 5, the push rod 5 is driven by the armature structure 6 to reciprocate in the base, the movable spring part 1 comprises a movable contact plate 11, an upper spring plate 12, a middle spring plate 13 and a lower spring plate 14 which are overlapped on the movable contact plate 11, one ends of the upper spring plate 12, the middle spring plate 13 and the lower spring plate 14 are jointly fixed on the movable contact plate 11, movable contacts are arranged at the other ends of the upper spring plate 12, the middle spring plate 13 and the lower spring plate 14, in order to solve the problem that the movable contact and the fixed contact in the prior art are easy to be in oblique contact, the lower spring plate 14 is connected with the push rod 5 through a connecting structure, the connecting structure comprises a limit notch 51 formed on the push rod 5, and a driving spring plate 15 which is bent and formed at the other end of the lower spring plate 14 towards one side opposite to the middle spring plate 13, the driving spring plate 15 is inserted in the limit notch 51 and is pressed on the push rod 5, and the lower spring plate 14 applies elastic pressure to the upper spring plate and the middle spring plate when the driving spring plate is pushed by the push rod 5.

In the above embodiment, the other end of the lower spring 14 is bent towards the side opposite to the middle spring 13 to form the driving spring 15, and the driving spring 15 is inserted into the limit notch 51 and is pressed against the push rod 5, so as to realize the connection between the lower spring 14 and the push rod 5.

As a preferred embodiment, the driving spring 15 is integrally connected to the other end of the lower spring 14 in an inclined structure, so that the driving spring 15 and the middle spring 13 are connected to form a certain included angle, the middle spring 13 and the upper spring 12 respectively extend through the limit notch 51, the driving spring 15 with the inclined design can obtain better elastic deformation capability, and the lower spring 14, the middle spring 13 and the upper spring 12 can be tightly overlapped together by using the reaction force of the driving spring 15 pressed on the push rod 5, so that the overall stability of the movable spring component 1 is improved, and the conductivity of the movable spring component is improved.

As shown in fig. 5, the driving spring 15 is provided with a through hole structure corresponding to the movable contact point and adapted to accommodate the other end of the lower spring, so that the other end of the lower spring can deviate into the through hole structure when the movable contact point is separated from the stationary contact point. The specific structure of the push rod is described in detail below: the push rod 5 comprises an upper limit table 52 and a lower limit table 53 which are formed on two sides of the limit notch 51, the length of the upper limit table is larger than that of the lower limit table, the upper reed 12 passes through the limit notch 51 and is matched and abutted against the upper limit table 52, one side edge of the driving spring piece 15 is abutted against the lower limit table 53, a bevel edge clamping table is formed on the side edge of the driving spring piece, and the bevel edge clamping table is abutted against the side surface of the limit notch to limit the installation distance of the driving spring piece penetrating into the limit notch, so that the movable spring part 1 and the push rod 5 form linkage fit, and therefore, the push rod 5 pushes the driving spring piece 15 when driven by an armature structure moves upwards, so that a biasing force close to one side of the fixed spring part 2 is applied to the whole movable spring part 1, and movable and fixed contact is realized; and when driven by the armature structure to move downwards, the push rod 5 pulls the upper spring 12, so that a biasing force away from one side of the static spring part is applied to the whole dynamic spring part, and the separation of the dynamic contact and the static contact is realized.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims

1. A magnetic latching relay for reducing time rebound is characterized in that: including setting up relatively in moving spring part (1) and quiet spring part (2) of base (4), quiet spring part (2) have stretch out first end (21) outside base (4), and for first end (21) are fixed second end (22) in base (4), quiet spring part (2) are provided with open pore structure (23) along its length direction extension to open pore structure (23) one end department shaping has quiet buffer piece (3), be provided with the stationary contact on quiet buffer piece (3), quiet buffer piece (3) with open pore structure (23) syntropy extension and hold in open pore structure (23), second end (22) are located open pore structure (23) one end department and with quiet buffer piece (3) an organic whole links to each other.

2. The time-trip-reduced magnetic latching relay of claim 1 wherein: the static buffer sheet (3) comprises a connecting part (31) connected with the second end (22), and a contact part (32) which is bent downwards by the connecting part (31) and is formed by extending along the length direction of the open pore structure (23), wherein the static contact is arranged on the contact part (32).

3. The time-trip-reduced magnetic latching relay of claim 2 wherein: and gaps are reserved between the two sides of the static buffer sheet (3) and the side walls of the two sides of the open pore structure (23), and the contact part (32) is arranged opposite to the other end of the open pore structure (23).

4. A time-trip-reduced magnetic latching relay according to claim 3, wherein: the contact part (32) is higher than the bottom surface of the static spring part (2).

5. The time-trip-reduced magnetic latching relay of any one of claims 1-4 wherein: the movable spring part (1) is connected with the push rod (5), the movable spring part (1) comprises a movable contact plate (11), and an upper spring plate (12), a middle spring plate (13) and a lower spring plate (14) which are arranged on the movable contact plate in a superposition mode, one ends of the upper spring plate (12), the middle spring plate (13) and the lower spring plate (14) are jointly fixed on the movable contact plate (11), movable contacts are arranged at the other ends of the upper spring plate (12), the middle spring plate (13) and the lower spring plate (14), the lower spring plate (14) is connected with the push rod (5) through a connecting structure, the connecting structure comprises a limiting notch (51) formed in the push rod (5), and a driving spring plate (15) which is bent and formed at the other end of the lower spring plate (14) towards one side of the middle spring plate (13), the driving spring plate (15) is inserted in the limiting notch (51) and is pressed on the push rod (5), and the lower spring plate (14) exerts elastic pressure on the upper spring plate and the middle spring plate when the driving spring plate is pushed by the push rod (5).

6. The time-trip-reduced magnetic latching relay of claim 5 wherein: the driving spring piece (15) is integrally connected to the other end of the lower spring piece (14) in an inclined structure.

7. The time-trip-reduced magnetic latching relay of claim 6 wherein: the driving spring piece (15) is connected with the middle spring piece (13) to form a certain included angle, and the middle spring piece (13) and the upper spring piece (12) respectively extend through the limit notch (51).

8. The time-trip-reduced magnetic latching relay of claim 7 wherein: the push rod (5) comprises an upper limit table (52) and a lower limit table (53) which are formed on two sides of the limit notch (51), the length of the upper limit table is larger than that of the lower limit table, the upper reed (12) passes through the limit notch (51) and is matched and propped against the upper limit table (52), one side edge of the driving elastic sheet (15) is propped against the lower limit table (53), and a bevel edge clamping table is formed on the side edge of the driving elastic sheet.

9. The time-trip-reduced magnetic latching relay of claim 8 wherein: the driving spring piece (15) is provided with a through hole structure which is suitable for accommodating the other end of the lower spring piece and corresponds to the movable contact point.