CN219873344U - Relay device - Google Patents

Abstract

The utility model discloses a relay, which comprises a shell, a contact part, a push rod mechanism and an elastic member, wherein the shell is made of plastic materials; the contact part comprises a movable spring part and a pair of static spring parts, and each static spring part comprises a static spring plate and a static contact arranged on the static spring plate; the movable spring part comprises movable springs and movable contacts arranged at two ends of the movable springs in the length direction; the push rod mechanism is movable relative to the shell and is used for pushing the movable spring part to move so as to realize the contact or separation of the movable contact and the fixed contact; the elastic component is mounted on the movable spring part; the movable spring part is arranged on the push rod mechanism through an elastic component, and the elastic component is used for providing contact pressure when the movable contact contacts with the static contact.

Description

Relay device

Technical Field

The utility model relates to the technical field of electronic control devices, in particular to a relay.

Background

A relay is an electronic control device having a control system (also called an input loop) and a controlled system (also called an output loop), which is generally used in an automatic control circuit. A relay is in fact an "automatic switch" that uses a smaller current to control a larger current. Therefore, the circuit plays roles of automatic adjustment, safety protection, circuit switching and the like.

The direct-acting relay comprises two static spring parts, a movable spring part, an elastic component and a push rod mechanism, wherein the elastic component is used for providing contact pressure, the movable spring part is arranged on the push rod mechanism through the elastic component, and the movable spring part and the two static spring parts are closed or opened through the linear reciprocating motion of the push rod mechanism.

However, the relay of the related art is inconvenient in assembling the moving spring part, the elastic member and the push rod mechanism, and affects the assembly efficiency.

Disclosure of Invention

The embodiment of the utility model provides a relay, which aims to solve the problem of low assembly efficiency in the prior art.

The relay of the embodiment of the utility model comprises:

a housing made of a plastic material;

the contact part comprises a movable spring part and a pair of static spring parts, wherein each static spring part comprises a static reed and a static contact arranged on the static reed; the movable spring part comprises a movable spring and movable contacts arranged at two ends of the movable spring in the length direction;

a push rod mechanism movable relative to the housing for pushing the movable spring portion to move to achieve contact or separation of the movable contact from the stationary contact; and

An elastic member mounted to the moving spring portion; the movable spring part is arranged on the push rod mechanism through the elastic component, and the elastic component is used for providing contact pressure when the movable contact contacts with the stationary contact.

According to some embodiments of the utility model, the movable reed is provided with a first connecting hole;

the elastic component is provided with a second connecting hole corresponding to the first connecting hole, and the movable contact penetrates through the first connecting hole and the second connecting hole, so that the movable reed and the elastic component are riveted through the movable contact.

According to some embodiments of the utility model, the contact portion comprises one of the moving spring portions;

the two ends of the movable reed in the length direction comprise at least two support arms, and each support arm is provided with one movable contact;

each static spring part comprises at least two static contacts, and at least two static contacts of one static spring part correspond to at least two movable contacts of one end of the movable reed in the length direction.

According to some embodiments of the utility model, the elastic member comprises:

two connecting parts respectively and fixedly connected with the movable contacts at two ends of the movable spring part in the length direction; and

The first elastic part is arranged between the two connecting parts and is used for abutting against the push rod mechanism.

According to some embodiments of the utility model, each connecting portion includes at least two connecting arms, the at least two connecting arms are connected with the first elastic portion, and the at least two connecting arms of one connecting portion correspond to the at least two support arms of one end of the movable contact spring in the length direction;

each support arm is provided with a first connecting hole, each connecting arm is provided with a second connecting hole, and the movable contact penetrates through the first connecting holes and the second connecting holes, so that the corresponding support arm and the connecting arm are riveted through the movable contact.

According to some embodiments of the utility model, the first elastic portion includes:

the elastic frame is arranged between the two connecting parts; the middle part of the elastic frame is provided with an opening;

and one end of the first elastic arm is connected to the edge of the opening, and the other end of the first elastic arm is used for abutting against the push rod mechanism.

According to some embodiments of the utility model, the push rod mechanism is movable relative to the housing between a first position and a second position; when the push rod mechanism is positioned at the first position, the movable contact is closed with the fixed contact, and when the push rod mechanism is positioned at the second position, the movable contact is disconnected with the fixed contact; the elastic member further includes:

And the second elastic part is connected with the first elastic part and is used for providing an elastic force for the push rod mechanism to move towards the first position when the push rod mechanism is in the second position.

According to some embodiments of the utility model, the second resilient portion comprises at least one second resilient arm;

when the push rod mechanism is in the second position, one end of the second elastic arm is abutted against the movable reed, and the other end of the second elastic arm is abutted against the shell.

According to some embodiments of the utility model, the second resilient portion does not provide a resilient force to the push rod mechanism when the push rod mechanism is in the first position.

According to some embodiments of the utility model, the contact part comprises at least two movable spring parts, and two ends of the movable spring of each movable spring part are provided with one movable contact; at least two movable spring portions are arranged side by side along a width direction of the respective movable springs;

each static spring part comprises at least two static contacts, and at least two static contacts of one static spring part correspond to at least two movable contacts of one end of at least two movable spring parts in the length direction respectively.

According to some embodiments of the utility model, the elastic member comprises two elastic pieces, each elastic piece comprising a connecting end and a free end;

the connecting ends of the two elastic sheets are respectively connected with the movable contacts at the two ends of the length direction of at least two movable spring parts, and the free ends of the two elastic sheets are used for being abutted with the push rod mechanism.

According to some embodiments of the utility model, each elastic piece comprises at least two third elastic arms, one end of each third elastic arm is connected with the free end, and the other end is provided with the connecting end;

at least two third elastic arms of each elastic piece correspond to at least two movable spring pieces of at least two movable spring pieces.

According to some embodiments of the utility model, the two ends of the movable reed in the length direction are provided with first connecting holes;

each third elastic arm is provided with a second connecting hole corresponding to the first connecting hole, and the movable contact penetrates through the first connecting hole and the second connecting hole, so that the third elastic arms and the movable spring are riveted through the movable contact.

According to some embodiments of the utility model, a relief space is provided between the elastic member and the moving spring portion; the relay further includes:

The short-circuit resistant structure comprises a first magnetizer and a second magnetizer, wherein the first magnetizer is arranged on one side of the movable spring part, which faces the static spring part, the second magnetizer is arranged on one side of the movable spring part, which faces away from the static spring part, and is in follow-up with the movable spring part, and the second magnetizer is used for forming a magnetic conduction loop with the first magnetizer;

wherein, the second magnetizer is arranged in the avoidance space.

According to some embodiments of the utility model, the elastic member is a metal elastic reed.

One embodiment of the above utility model has at least the following advantages or benefits:

according to the relay provided by the embodiment of the utility model, the elastic member is arranged on the movable spring part, so that the elastic member and the movable spring part can be assembled firstly in the assembly process of the relay, and then the assembled elastic member and the movable spring part are arranged in the push rod mechanism. Thus, for assembly personnel, the assembly process is easy to operate, the assembly efficiency is higher, and the assembly precision is easy to control.

Drawings

Fig. 1 is a perspective view of a relay according to a first embodiment of the present utility model, in which an upper cover is omitted and a contact portion is in a completely closed state.

Fig. 2 shows a perspective view of the base omitted from fig. 1.

Fig. 3 shows a schematic side view of the relay of the first embodiment of the present utility model, in which the upper cover is omitted and the contact portion is in a fully closed state.

Figure 4 shows a cross-sectional view of A-A in figure 3.

Fig. 5 shows a schematic perspective view of the magnetic circuit portion omitted in fig. 2.

Fig. 6 shows an exploded view of fig. 5 with the push rod mechanism omitted and only one set of contact portions shown.

Fig. 7 is a perspective view of the elastic member of fig. 6.

Fig. 8 shows a schematic top view of the contact portion, the elastic member, disposed on the base, wherein the contact portion is in a fully closed state.

Fig. 9 shows a schematic top view of the contact portion, the elastic member, disposed on the base, wherein the contact portion is in a fully open state.

Fig. 10 is an exploded view showing an elastic member, a short-circuit resistant structure, and a contact portion in a relay according to a second embodiment of the present utility model.

Fig. 11 is an exploded view showing an elastic member, a short-circuit resistant structure, and a contact portion in a relay according to a third embodiment of the present utility model.

Fig. 12 is an exploded view showing an elastic member, a short-circuit resistant structure, and a contact portion in a relay according to a fourth embodiment of the present utility model.

Fig. 13 is a schematic view showing an elastic member in a relay according to a fifth embodiment of the present utility model.

Wherein reference numerals are as follows:

10. a base; 110. A stop portion;

30. a push rod mechanism; 310. A push rod; 320. An iron core;

50. a contact portion; 501. a moving spring part; 502. a stationary spring portion; 510. a static reed; 520a, stationary contact; 530. a movable reed; 532a, arms; 532b, first connection holes; 534. a through hole; 540a, movable contact;

70. a magnetic circuit portion; 710. a yoke structure; 711. a yoke plate; 7111. a through hole; 712. a U-shaped yoke; 720. a wire frame; 721. a central bore; 730. a coil; 740. a permanent magnet;

80. an anti-short circuit structure; 810. a first magnetizer; 820. a second magnetizer; 821. a base; 822. a side portion;

90. an elastic member; 910. a connection part; 911. a second connection hole; 912. a connecting arm; 920. a first elastic portion; 921. a spring frame; 921a, openings; 922. a first elastic arm; 930. a second elastic part; 931. a second elastic arm; 940. a spring plate; 941. a connection end; 942. a free end; 943. a third elastic arm; 950. a reed; 960. a connection section;

d1, in the length direction; d2, width direction; s, avoiding space

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted.

As shown in fig. 1 to 5, the relay of the embodiment of the present utility model includes a housing, a push rod mechanism 30, a magnetic circuit portion 70, a contact portion 50, and an elastic member 90. The magnetic circuit portion 70 is energized to drive the push rod mechanism 30 to move to control the closing or opening of the contact portion 50.

It will be understood that the terms "comprising," "including," and "having," and any variations thereof, are intended to cover non-exclusive inclusions in the embodiments of the utility model. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may alternatively include other steps or elements not listed or inherent to such process, method, article, or apparatus.

The housing is made of a plastic material and has a cavity for accommodating the push rod mechanism 30, the magnetic circuit portion 70, the contact portion 50 and the elastic member 90.

The housing includes a base 10 and an upper cover (not shown in the drawings), the base 10 and the upper cover being snapped together and forming a chamber for accommodating the push rod mechanism 30, the magnetic circuit portion 70, the contact portion 50 and the elastic member 90. The shape in which the base 10 and the upper cover are snapped together may be determined according to the assembled shape of the push rod mechanism 30, the magnetic circuit portion 70, the contact portion 50 and the elastic member 90. For example, in the embodiment of the present utility model, the base 10 and the upper cover are buckled to form a hollow cuboid, but not limited thereto.

In one embodiment, the upper cover has a rectangular parallelepiped shape with an opening, the base 10 has a substantially plate shape, and the base 10 is engaged with the opening of the upper cover to form the chamber.

Of course, in other embodiments, the upper cover may be plate-shaped, and the base 10 may be rectangular parallelepiped with an opening. Or, the base 10 and the upper cover are both cuboid and have openings on one surface, the openings of the base 10 and the openings of the upper cover are opposite, and the base 10 and the upper cover are buckled to form the cavity.

In addition, the chamber of the housing may be used only for accommodating the parts of the relay itself such as the push rod mechanism 30, the magnetic circuit portion 70, the contact portion 50, and the elastic member 90. Of course, in other embodiments, the housing is also to be understood in a broad sense as being used not only to house components of the relay, but also to house components of other components. In other words, the relay shares one housing with other components.

The magnetic circuit portion 70 includes a yoke structure 710, a bobbin 720, and a coil 730. The yoke structure 710 forms a cavity, and the bobbin 720 and the coil 730 are disposed within the cavity of the yoke structure 710. The coil 730 is wound around the outer circumference of the bobbin 720 to form a magnetic control loop. The wire holder 720 is provided with a center hole 721 in the contact-contact separation direction of the contact portion 50, the center hole 7211 being for the push rod mechanism 30 to pass therethrough.

As an example, the yoke structure 710 includes a yoke plate 711 and a U-shaped yoke 712, and the yoke plate 711 is connected to the U-shaped yoke 712 to form a ring yoke. The yoke plate 711 is provided with a through hole 7111, and the through hole 7111 is provided for the push rod mechanism 30 to pass through.

Of course, in other embodiments, the yoke structure 710 may also include a cylindrical yoke and a yoke plate that are joined to form a ring yoke.

The magnetic circuit portion 70 further includes two permanent magnets 740, and the two permanent magnets 740 are disposed on the bobbin 720 and located at both sides of the movement direction of the push rod mechanism 30. The yoke structure 710 is arranged outside the wire frame 720 and the permanent magnet 740 to form a magnetic circuit structure of magnetic retention.

Of course, in other embodiments, the permanent magnet 740 may be omitted, and no magnetic circuit structure with magnetic latching is formed, so that the cost of electricity is high, the service life is short, and the stability of comprehensive performance is poor.

As shown in fig. 4 and 5, the push rod mechanism 30 is movable relative to the base 10 of the housing between a first position and a second position in the contact-to-separation direction of the contacts of the contact portion 50. When the push rod mechanism 30 is in the first position, the contacts of the contact portion 50 are in a fully closed state. When the push rod mechanism 30 is in the second position, the contacts of the contact portion 50 are in a fully open state.

The push rod mechanism 30 includes a push rod 310 and a core 320, the core 320 being connected to the push rod 310. The iron core 320 can move in the contact or separation direction of the contacts under the action of the magnetic control circuit formed by the coil 730, and thus drives the push rod 310 to move, so as to control the contact or separation of the contact portion 50. A permanent magnet 740 is provided on the side of the iron core 320 facing away from the push rod 310.

In the embodiment of the present utility model, the push rod mechanism 30 includes two iron cores 320, the two iron cores 320 are respectively disposed on two sides of the push rod 310, and a permanent magnet 740 is disposed on a side of each iron core 320 facing away from the push rod 310.

As shown in fig. 5 and 6, the contact portion 50 includes at least one moving spring portion 501 and a pair of static spring portions 502. The stationary spring portion 502 is fixedly mounted on the base 10, the movable spring portion 501 is mounted on the push rod mechanism 30 through the elastic member 90, and the movable spring portion 501 follows the push rod mechanism 30.

It should be noted that the number of the contact portions 50 in the embodiment of the present utility model is not particularly limited, and for example, the contact portions 50 may be one, two, three or more. In the embodiment of the present utility model, the number of the contact portions 50 is two, and the two contact portions 50 are disposed at intervals in the moving direction of the push rod mechanism 30.

Each static spring portion 502 includes a static spring plate 510 and at least one static contact 520a connected to the static spring plate 510. The static reed 510 is fixedly mounted on the base 10, for example, the static reed 510 is inserted into the base 10, and part of the static reed 510 extends out of the bottom surface of the base 10, and part of the static reed 510 is located in the base 10.

Each stationary contact 520a may be connected to the stationary reed 510 by riveting, welding, or the like. The stationary contact 520a and the stationary reed 510 may be integrally formed or may be separately formed.

The number of stationary contacts 520a may be one, two, three, or other numbers. When the number of the stationary contacts 520a is equal to or greater than two, the plurality of stationary contacts 520a do not contact each other.

Each movable spring portion 501 includes a movable spring 530 and a movable contact 540a, and at least one movable contact 540a is provided at both ends of the movable spring 530 in the length direction D1. At least one movable contact 540a at one end of the at least one movable spring portion 501 in the length direction D1 corresponds to at least one stationary contact 520a of one stationary spring portion 502.

The movable contact 540a and movable spring 530 may be connected by riveting, welding, or the like. Further, movable contact 540a and movable spring 530 may be integrally formed or may be separately formed.

The number of movable contacts 540a at one end in the length direction D1 of movable reed 530 may be one, two, three, or the like. When the number of movable contacts 540a at one end in the longitudinal direction D1 of movable reed 530 is two or more, the plurality of movable contacts 540a do not contact each other.

As shown in fig. 5 and 6, the relay according to the embodiment of the present utility model further includes a short-circuit resisting structure 80, and the short-circuit resisting structure 80 is used for resisting an electric repulsive force generated by a short-circuit current flowing between the movable contact 540a and the stationary contact 520 a.

It will be appreciated that the number of anti-shorting structures 80 corresponds to the number of contact portions 50. For example, the relay of the embodiment of the present utility model includes two short-circuit resistant structures 80, and the two short-circuit resistant structures 80 correspond to the two contact portions 50, respectively.

The anti-shorting structure 80 includes a first magnetic conductor 810 and a second magnetic conductor 820. The first magnetizer 810 and the second magnetizer 820 can be made of iron, cobalt, nickel, alloys thereof, and the like.

The first magnetizer 810 is fixedly mounted on the base 10, for example, the first magnetizer 810 is inserted into the base 10. First magnetizer 810 and static spring portion 502 are provided on one side of movable spring 530.

In one embodiment, the first magnetizer 810 is disposed between the pair of static spring portions 502. In this manner, the space between the pair of static spring portions 502 is utilized to accommodate the first magnetizer 810, and the arrangement of the first magnetizer 810 does not occupy the space of the relay in the moving direction of the push rod mechanism 30.

Second magnetic conductor 820 is disposed on a side of movable reed 530 facing away from first magnetic conductor 810 and is configured to follow movable reed 530. The second magnetizer 820 and the movable spring 530 may be connected by riveting, but not limited thereto. First magnetizer 810 and second magnetizer 820 are respectively positioned at two sides of movable spring 530, and when movable spring 530 is used for flowing current, a magnetic conduction loop is formed between first magnetizer 810 and second magnetizer 820.

It is understood that the first magnetizer 810 and the second magnetizer 820 may have L-shape, U-shape, or straight shape, as long as a magnetic conductive loop can be formed between the first magnetizer 810 and the second magnetizer 820.

When a large current passes through movable reed 530, a suction force is generated between first magnetizer 810 and second magnetizer 820 along the contact pressure direction, and the suction force can resist an electric repulsive force generated between movable contact 540a and stationary contact 520a due to a short-circuit current, so that movable contact 540a and stationary contact 520a are ensured not to spring open.

As shown in fig. 5, the number of elastic members 90 corresponds to the number of contact portions 50. In the embodiment of the present utility model, the relay includes two elastic members 90, one of the movable spring portions 501 is mounted on the push rod mechanism 30 through one elastic member 90, and the other movable spring portion 501 is mounted on the push rod mechanism 30 through the other elastic member 90. The resilient member 90 is used to provide a contact pressure when the push rod mechanism 30 is in the first position.

As shown in fig. 6, both ends in the length direction D1 of movable spring 530 include at least two arms 532a, and each arm 532a is provided with a movable contact 540a. Each stationary spring portion 502 includes at least two stationary contacts 520a. At least two stationary contacts 520a of one stationary spring portion 502 correspond to at least two movable contacts 540a of one end of movable reed 530 in the length direction D1, respectively.

In the embodiment of the present utility model, the contact portion 50 includes a movable spring portion 501, two arms 532a are disposed at two ends of the movable spring 530 of the movable spring portion 501 in the length direction D1, and a movable contact 540a is disposed on each arm 532 a. Each stationary spring portion 502 includes two stationary contacts 520a. The two stationary contacts 520a of one stationary spring portion 502 correspond to the two movable contacts 540a at one end of the movable spring 530 in the longitudinal direction D1, and the two stationary contacts 520a of the other stationary spring portion 502 correspond to the two movable contacts 540a at the other end of the movable spring 530 in the longitudinal direction D1.

It will be appreciated that the electrical repulsive force between the moving contact 540a and the stationary contact 520a is proportional to the square of the current. In the embodiment of the present utility model, at least two movable contacts 540a are disposed on at least two arms 532a in a one-to-one correspondence, and the stationary spring portion 502 also includes at least two stationary contacts 520a, and the at least two stationary contacts 520a are in a one-to-one correspondence with the at least two movable contacts 540 a. Since the number of the movable contacts 540a increases and the movable contacts 540a are provided on the arm 532a, when the contacts are closed, the current value flowing between the pair of the stationary contacts 520a and the movable contacts 540a decreases, and thus the electric repulsive force between the movable contacts 540a and the stationary contacts 520a can be reduced. On the basis of ensuring the short circuit resistance, the thickness of the first magnetizer 810 and/or the second magnetizer 820 can be reduced, the cost is reduced, the product performance can be improved, the volume of the relay can be reduced, and the miniaturization is facilitated. In other words, in the case of the first magnetizer 810 and/or the second magnetizer 820 having the same size, the short-circuit resistance efficiency can be improved.

As shown in fig. 6, the second magnetizer 820 includes a base 821 and two side portions 822, and the two side portions 822 are connected to opposite sides of the base 821, respectively. Base 821 is fixedly attached to a side of movable reed 530 facing away from first magnetic conductor 810, and two side portions 822 are respectively provided on two opposite side edges in width direction D2 of movable reed 530. Each side 822 has a pole face on a side facing first magnetic conductor 810.

As shown in fig. 4 and 6, the elastic member 90 is mounted on a side of the movable spring portion 501 facing away from the first magnetizer 810, and the movable spring portion 501 is disposed on the push rod mechanism 30 through the elastic member 90.

An avoidance space S is provided between the elastic member 90 and the movable spring portion 501, and the second magnetizer 820 is provided in the avoidance space S.

It will be appreciated that the resilient member 90 is mounted to the moving spring portion 501 such that during assembly of the relay, the resilient member 90 may be assembled with the moving spring portion 501 prior to the assembly of the resilient member 90 and moving spring portion 501 into the push rod mechanism 30. Thus, for operators, the assembly process is easy to operate, the assembly efficiency is high, and the assembly accuracy is easy to control.

In the embodiment of the utility model, as shown in fig. 7, the elastic member 90 is a metal elastic reed. The elastic member 90 includes two connection portions 910 and a first elastic portion 920. The two connection portions 910 are respectively and fixedly connected to the movable contacts 540a at both ends of the movable spring portion 501 in the length direction D1, and the first elastic portion 920 is disposed between the two connection portions 910 and is used for abutting against the push rod mechanism 30. The first elastic portion 920 is used to provide a contact pressure when the contact portion 50 is in a closed state.

The first resilient portion 920 includes a resilient frame 921 and at least one first resilient arm 922. The spring frame 921 is disposed between the two connection portions 910, and an opening 921a is provided in the middle of the spring frame 921. One end of the first elastic arm 922 is connected to the edge of the opening 921a, and the other end is for abutting against the push rod mechanism 30.

The number of first resilient arms 922 may be one, two, three, or other numbers. The number of the spring frames 921 may be one, two, three, or other numbers.

As shown in fig. 7, each of the connection portions 910 of the elastic member 90 includes at least two connection arms 912, and the at least two connection arms 912 are connected with the first elastic portion 920. At least two connecting arms 912 of one connecting portion 910 correspond to at least two arms 532a at one end in the longitudinal direction D1 of movable spring 530. Each arm 532a is provided with a first connecting hole 532b, each connecting arm 912 is provided with a second connecting hole 911, and the movable contact 540a is inserted through the first connecting hole 532b and the second connecting hole 911 to realize the riveting connection of the movable contact 540a with the movable spring 530, the elastic member 90, and the movable contact 540a, so that the connecting arms 912 can be simultaneously riveted when the movable contact 540a is riveted to the arm 532a of the movable spring 530. That is, in one caulking process, movable reed 530, elastic member 90, and movable contact 540a can be caulking-connected, which is convenient for processing operations and saves processing processes. In the embodiment of the present utility model, each connecting portion 910 includes two connecting arms 912, and two arms 532a are disposed at two ends of the movable spring 530, but not limited thereto.

As shown in fig. 7 to 9, the elastic member 90 further includes a second elastic portion 930, and the second elastic portion 930 is connected to the first elastic portion 920, for providing an elastic force to the push rod mechanism 30 to move toward the first position when the push rod mechanism 30 is in the second position.

Since the second elastic portion 930 provides the push rod mechanism 30 with an elastic force that causes the push rod mechanism 30 to have a tendency to move toward the first position when the contact portion 50 is in the completely opened state, when the push rod mechanism 30 is required to move again (i.e., the contact portion 50 is switched to the closed state) to energize the coil 730, since the push rod mechanism 30 has been subjected to the elastic force exerted by the second elastic portion 930 at this time, the voltage at which the coil 730 is energized can be reduced, thereby reducing the operation voltage such that the magnitude of the operation voltage is within the standard range. The standard range of the operating voltage may be between 40% rated voltage and 60% rated voltage, but is not limited thereto.

In addition, the magnitude of the operation voltage of the relay can be flexibly adjusted by adjusting the magnitude of the elastic force applied by the second elastic portion 930. Specifically, when the elastic force provided by the second elastic portion 930 is increased, the operating voltage of the relay becomes smaller. When the elastic force provided by the second elastic portion 930 is reduced, the operation voltage of the relay is increased.

Further, when the relay has the permanent magnet 740 (i.e., the relay has a magnetic holding function), the magnitude of the reset voltage of the relay can be flexibly adjusted by adjusting the magnitude of the elastic force of the first elastic portion 920. Specifically, when the elastic force provided by the first elastic portion 920 is increased, the return voltage of the relay becomes smaller. When the elastic force provided by the first elastic portion 920 is reduced, the return voltage of the relay becomes larger accordingly.

Therefore, by adjusting the magnitude of the elastic force of the second elastic portion 930, the magnitude of the operation voltage can be adjusted independently without affecting the reset voltage, and by adjusting the magnitude of the elastic force of the first elastic portion 920, the magnitude of the reset voltage of the relay can be adjusted flexibly without affecting the operation voltage, so that the operation voltage and the reset voltage are in a state without a pressure difference. At this time, the permanent magnet 740 is only required to be magnetized or demagnetized, so that the magnetic holding force can be increased or reduced, and the action voltage and the reset voltage can be synchronously adjusted without adjusting the dispersion difference of other parts of the relay, thereby reducing the requirements on the precision of other parts.

It should be noted that, the magnitude of the elastic force of the second elastic portion 930 may be adjusted by changing the elastic modulus of the second elastic portion 930, for example, by changing the elastic modulus of the second elastic portion 930: the magnitude of the elastic force of the second elastic portion 930 may be adjusted by changing the deformation amount of the second elastic portion 930 in the uncompressed state, and the width of the second elastic portion 930 may be changed, but is not limited thereto.

As shown in fig. 8, when the push rod mechanism 30 is in the first position (the contact portion 50 is in the fully closed state), the second elastic portion 930 does not provide an elastic force to the push rod mechanism 30.

As shown in fig. 9, when the push rod mechanism 30 is in the second position (the contact portion 50 is in the completely opened state), one end of the second elastic portion 930 abuts against the movable spring 530, and the other end of the second elastic portion 930 abuts against the stopper 110 of the base 10.

Of course, in other embodiments, when the push rod mechanism 30 is in the second position, one end of the second elastic portion 930 abuts against the push rod 310 of the push rod mechanism 30, and the other end of the second elastic portion 930 abuts against the stop portion 110 of the base 10.

Note that the contact portion 50 being in the fully closed state means that: after the movable contact 540a and the stationary contact 520a of the contact portion 50 are contacted and when the over-stroke is completed, the contact portion 50 is in a state; the contact portion 50 being in the completely open state means that: after the movable contact 540a and the stationary contact 520a of the contact portion 50 are opened and at the maximum contact gap, the contact portion 50 is in a state.

Referring back to fig. 7, the second elastic portion 930 includes at least one second elastic arm 931, and when the push rod mechanism 30 is at the second position, one end of the second elastic arm 931 abuts against the movable spring 530, and the other end of the second elastic arm 931 abuts against the base 10.

In the embodiment of the present utility model, the elastic member 90 includes two second elastic portions 930, and the two second elastic portions 930 are connected to two opposite sides of the first elastic portion 920. And, each second elastic part 930 includes one second elastic arm 931, and each second elastic arm 931 is disposed between two connection arms 912.

Of course, in other embodiments, the elastic member 90 may be other components capable of providing elastic force, which are not listed here.

As shown in fig. 10, the relay of the second embodiment has substantially the same structure in the basic configuration as the relay of the first embodiment. Therefore, in the following description of the relay of the second embodiment, the structure already described in the first embodiment is not repeated. The same reference numerals are given to the same configurations as those of the relay described in the first embodiment. Therefore, in the following description of the present embodiment, differences from the relay of the first embodiment will be mainly described.

The relay of the embodiment of the utility model comprises at least two movable spring parts 501, and two ends of a movable spring 530 of each movable spring part 501 are provided with a movable contact 540a. The anti-shorting structure 80 includes a first magnetic conductor 810 and at least two second magnetic conductors 820. At least two movable spring portions 501 are arranged side by side along the width direction D2 of the respective movable springs 530. At least two second magnetic conductors 820 are fixedly connected to the movable springs 530 of at least two movable spring portions 501 in one-to-one correspondence. Each of the stationary spring portions 502 includes at least two stationary contacts 520a, and the at least two stationary contacts 520a of one stationary spring portion 502 correspond to the at least two movable contacts 540a of one end of the at least two movable spring portions 501 in the length direction D1, respectively.

It will be appreciated that the current flowing in from one of the static spring portions 502 will be split into at least two paths after passing through at least two of the dynamic spring portions 501, and finally at least two paths of current will flow out from the other static spring portion 502. In this way, the contact portion 50 is closed to form a multi-contact parallel structure, which serves as a shunt. On one hand, the temperature rise near the contact is reduced; on the other hand, it is also advantageous to reduce the electromotive repulsive force between the movable contact 540a and the stationary contact 520 a. On the basis of ensuring the short circuit resistance, the thickness of the first magnetizer 810 and/or the second magnetizer 820 can be reduced, the cost is reduced, the product performance can be improved, the volume of the relay can be reduced, and the miniaturization is facilitated.

In the embodiment of the present utility model, the relay includes two movable spring portions 501, and two ends of each movable spring portion 501 are provided with one movable contact 540a. One stationary spring portion 502 includes two stationary contacts 520a, and the two stationary contacts 520a correspond to the two movable contacts 540a at one end of the two movable spring portions 501 in the length direction D1, respectively. The anti-short circuit structure 80 includes a first magnetizer 810 and two second magnetizers 820, where the two second magnetizers 820 are fixedly connected to the movable springs 530 of the two movable spring portions 501, respectively.

Of course, in other embodiments, the number of moving spring portions 501 may also be three, four, etc. When the number of the movable spring parts 501 is changed, the number of the second magnetizers 820 and the stationary contacts 520a of the stationary spring part 502 are also changed, and will not be described herein.

With continued reference to fig. 10, each second magnetic conductor 820 includes a base 821 and two sides 822. Two sides 822 are connected to opposite sides of the base 821, respectively. Base 821 is fixedly attached to a side of movable reed 530 facing away from first magnetic conductor 810, and two side portions 822 are respectively provided on two opposite side edges in width direction D2 of movable reed 530. Each side 822 has a pole face on a side facing first magnetic conductor 810. A through hole 534 is formed between two adjacent movable reeds 530. Two adjacent sides 822 of two adjacent second magnetic conductors 820 are disposed through the through-hole 534.

The resilient member 90 includes two spring tabs 940, each spring tab 940 including a connecting end 941 and a free end 942. The two free ends 942 of the two spring pieces 940 are close to each other in the longitudinal direction D1 of the moving spring portion 501. The connection ends 941 of the two spring pieces 940 are respectively connected to the movable contacts 540a at both ends of the at least two movable spring portions 501 in the length direction D1, and the free ends 942 of the two spring pieces 940 are configured to abut against the push rod mechanism 30.

Each spring 940 includes at least two third elastic arms 943, where one end of each third elastic arm 943 is connected to the free end 942, and the other end is provided with a connecting end 941. At least two third spring arms 943 of 940 of each spring piece correspond to at least two movable springs 530 of at least two movable spring portions 501. Each of the connection ends 941 is provided with a second connection hole 911, and the movable contact 540a sequentially penetrates through the first connection hole 532b of the movable spring 530 and the second connection hole 911 of the elastic sheet 940 to connect the elastic sheet 940 and the movable spring 530.

In the embodiment of the present utility model, each elastic sheet 940 includes two third elastic arms 943, and the connection ends 941 of the two third elastic arms 943 are respectively connected to two movable contacts 540a at one ends of the two movable spring portions 501.

It is understood that the number of third resilient arms 943 may be identical to the number of moving spring portions 501.

It should be noted that, under the condition that the contacts are on different surfaces, the structure of the two elastic sheets 940 in this embodiment can ensure that each contact can achieve over-travel reliable contact.

It should be noted that the relay according to the second embodiment of the present utility model may also employ the elastic member 90 according to the first embodiment.

As shown in fig. 11, the relay of the third embodiment has substantially the same structure in the basic structure as the relay of the first embodiment. Therefore, in the following description of the relay of the third embodiment, the structure already described in the first embodiment is not repeated. The same reference numerals are given to the same configurations as those of the relay described in the first embodiment. Therefore, in the following description of the present embodiment, differences from the relay of the first embodiment will be mainly described.

In the present embodiment, the contact portion 50 includes one moving spring portion 501 and a pair of static spring portions 502. Both ends in the longitudinal direction D1 of movable spring 530 of movable spring portion 501 are provided with one movable contact 540a. Each stationary spring portion 502 includes a stationary contact 520a. Two stationary contacts 520a correspond to movable contacts 540a at both ends of movable reed 530, respectively.

Each second elastic portion 930 of the elastic member 90 includes two second elastic arms 931, and the connection portion 910 is located between the two second elastic arms 931.

It should be noted that the relay according to the third embodiment of the present utility model may also employ the elastic member 90 according to the first and second embodiments.

As shown in fig. 12, the relay of the fourth embodiment has substantially the same structure in the basic structure as the relay of the second embodiment. Therefore, in the following description of the relay of the fourth embodiment, the structure already described in the second embodiment is not repeated. The same reference numerals are given to the same configurations as those of the relay described in the second embodiment. Therefore, in the following description of the present embodiment, differences from the relay of the second embodiment will be mainly described.

In the present embodiment, the elastic member 90 includes at least two reeds 950, and the at least two reeds 950 are respectively connected to the at least two movable reed portions 501 in one-to-one correspondence.

Each reed 950 includes two connection portions 910 and a first elastic portion 920. The two connection portions 910 are fixedly connected to the moving spring portion 501, and the first elastic portion 920 is disposed between the two connection portions 910 and is used for abutting against the push rod mechanism 30. The first elastic portion 920 is used to provide a contact pressure when the contact portion 50 is in a closed state.

The first resilient portion 920 includes a resilient frame 921 and at least one first resilient arm 922. The spring frame 921 is disposed between the two connection portions 910, and an opening 921a is provided in the middle of the spring frame 921. One end of the first elastic arm 922 is connected to the edge of the opening 921a, and the other end is for abutting against the push rod mechanism 30.

The number of first resilient arms 922 may be one, two, three, or other numbers. The number of the spring frames 921 may be one, two, three, or other numbers.

As shown in fig. 12, each connecting portion 910 is provided with a second connecting hole 911 corresponding to the first connecting hole 532b of the movable contact spring 530, and the movable contact 540a is inserted through the first connecting hole 532b and the second connecting hole 911, thereby realizing the rivet connection of the movable contact spring 530, the spring 950 and the movable contact 540 a.

It should be noted that, in the case that the contacts are on different surfaces, the structure of at least two reeds 950 in this embodiment can ensure that each contact can achieve over-travel reliable contact.

As shown in fig. 13, the elastic member of the fifth embodiment has substantially the same structure in the basic configuration as the elastic member of the third embodiment. Therefore, in the following description of the elastic member of the fifth embodiment, the structure already described in the third embodiment is not repeated. The same reference numerals are given to the same structures as those of the elastic members described in the third embodiment. Therefore, in the following description of the present embodiment, mainly differences from the elastic member of the third embodiment will be described.

In this embodiment, the elastic member 90 further includes two connection sections 960, and two ends of each connection section 960 are respectively connected to one end of the corresponding second elastic arm 931 away from the elastic frame 921.

It will be appreciated that the various embodiments/implementations provided by the utility model may be combined with one another without conflict and are not illustrated here.

In the inventive embodiments, the terms "first," "second," "third," "a pair," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more, unless expressly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the embodiments of the utility model will be understood by those skilled in the art according to the specific circumstances.

In the description of the embodiments of the utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the utility model and to simplify the description, and do not indicate or imply that the devices or units referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the utility model.

In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the utility model and is not intended to limit the embodiment of the utility model, and various modifications and variations can be made to the embodiment of the utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present utility model should be included in the protection scope of the embodiments of the present utility model.

Claims (15)

1. A relay, comprising:

a housing made of a plastic material;

the contact part comprises a movable spring part and a pair of static spring parts, wherein each static spring part comprises a static reed and a static contact arranged on the static reed; the movable spring part comprises a movable spring and movable contacts arranged at two ends of the movable spring in the length direction;

a push rod mechanism movable relative to the housing for pushing the movable spring portion to move to achieve contact or separation of the movable contact from the stationary contact; and

an elastic member mounted to the moving spring portion; the movable spring part is arranged on the push rod mechanism through the elastic component, and the elastic component is used for providing contact pressure when the movable contact contacts with the stationary contact.

2. The relay according to claim 1, wherein the movable reed is provided with a first connection hole;

the elastic component is provided with a second connecting hole corresponding to the first connecting hole, and the movable contact penetrates through the first connecting hole and the second connecting hole, so that the movable reed and the elastic component are riveted through the movable contact.

3. The relay according to claim 1, wherein the contact portion includes one of the moving spring portions;

The two ends of the movable reed in the length direction comprise at least two support arms, and each support arm is provided with one movable contact;

each static spring part comprises at least two static contacts, and at least two static contacts of one static spring part correspond to at least two movable contacts of one end of the movable reed in the length direction.

4. A relay according to claim 3, wherein the resilient member comprises:

two connecting parts respectively and fixedly connected with the movable contacts at two ends of the movable spring part in the length direction; and

the first elastic part is arranged between the two connecting parts and is used for abutting against the push rod mechanism.

5. The relay according to claim 4, wherein each of the connecting portions includes at least two connecting arms, the at least two connecting arms are connected to the first elastic portion, and the at least two connecting arms of one connecting portion correspond to the at least two arms of one end of the movable reed in the longitudinal direction;

each support arm is provided with a first connecting hole, each connecting arm is provided with a second connecting hole, and the movable contact penetrates through the first connecting holes and the second connecting holes, so that the corresponding support arm and the connecting arm are riveted through the movable contact.

6. The relay of claim 4, wherein the first resilient portion comprises:

the elastic frame is arranged between the two connecting parts; the middle part of the elastic frame is provided with an opening;

and one end of the first elastic arm is connected to the edge of the opening, and the other end of the first elastic arm is used for abutting against the push rod mechanism.

7. The relay of claim 4, wherein the pushrod mechanism is movable relative to the housing between a first position and a second position; when the push rod mechanism is positioned at the first position, the movable contact is closed with the fixed contact, and when the push rod mechanism is positioned at the second position, the movable contact is disconnected with the fixed contact; the elastic member further includes:

and the second elastic part is connected with the first elastic part and is used for providing an elastic force for the push rod mechanism to move towards the first position when the push rod mechanism is in the second position.

8. The relay of claim 7, wherein the second resilient portion comprises at least one second resilient arm;

when the push rod mechanism is in the second position, one end of the second elastic arm is abutted against the movable reed, and the other end of the second elastic arm is abutted against the shell.

9. The relay of claim 7, wherein the second resilient portion does not provide a resilient force to the push rod mechanism when the push rod mechanism is in the first position.

10. The relay according to claim 1, wherein the contact portion includes at least two movable spring portions, and both ends of the movable spring of each movable spring portion are provided with one movable contact; at least two movable spring portions are arranged side by side along a width direction of the respective movable springs;

each static spring part comprises at least two static contacts, and at least two static contacts of one static spring part correspond to at least two movable contacts of one end of at least two movable spring parts in the length direction respectively.

11. The relay of claim 10, wherein the resilient member comprises two spring plates, each spring plate comprising a connecting end and a free end;

the connecting ends of the two elastic sheets are respectively connected with the movable contacts at the two ends of the length direction of at least two movable spring parts, and the free ends of the two elastic sheets are used for being abutted with the push rod mechanism.

12. The relay according to claim 11, wherein each spring piece comprises at least two third elastic arms, one end of each third elastic arm is connected with the free end, and the other end is provided with the connecting end;

at least two third elastic arms of each elastic piece correspond to at least two movable spring pieces of at least two movable spring pieces.

13. The relay according to claim 12, wherein first connecting holes are formed at both ends of the movable reed in the length direction;

each third elastic arm is provided with a second connecting hole corresponding to the first connecting hole, and the movable contact penetrates through the first connecting hole and the second connecting hole, so that the third elastic arms and the movable spring are riveted through the movable contact.

14. The relay according to claim 1, wherein a relief space is provided between the elastic member and the moving spring portion; the relay further includes:

the short-circuit resistant structure comprises a first magnetizer and a second magnetizer, wherein the first magnetizer is arranged on one side of the movable spring part, which faces the static spring part, the second magnetizer is arranged on one side of the movable spring part, which faces away from the static spring part, and is in follow-up with the movable spring part, and the second magnetizer is used for forming a magnetic conduction loop with the first magnetizer;

Wherein, the second magnetizer is arranged in the avoidance space.

15. The relay of claim 1, wherein the resilient member is a metallic spring reed.