CN218975361U

CN218975361U - Relay device

Info

Publication number: CN218975361U
Application number: CN202223233608.8U
Authority: CN
Inventors: 钟叔明; 代文广; 何峰; 何仲波
Original assignee: Xiamen Hongfa Electric Power Controls Co Ltd
Current assignee: Xiamen Hongfa Electric Power Controls Co Ltd
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2023-05-05
Anticipated expiration: 2032-12-01

Abstract

The utility model discloses a relay, which comprises a base, a contact assembly, a push rod mechanism and an elastic piece, wherein the contact assembly comprises a contact or separable static reed and a movable reed, and the static reed is fixedly connected to the base; the push rod mechanism is movable between a first position and a second position relative to the base along the contact separation direction of the contact assembly; the elastic piece comprises a first elastic part and a second elastic part; the movable reed is arranged on the push rod mechanism through a first elastic part, and the first elastic part is used for providing contact pressure when the push rod mechanism is at a first position; the second elastic portion 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.

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 operating voltage of the relay is a voltage value applied to the coil when the contacts are switched from the open state to the closed state. When the relay is a magnetic latching relay, the return voltage refers to the voltage value applied to the coil when the contacts are switched from the closed state to the open state. When the relay is a non-magnetic latching relay, the value of the coil voltage remaining when the contacts are switched from the closed state to the open state is referred to as the release voltage.

However, the relay in the related art does not regulate the action voltage well, and when the relay is a magnetic latching relay, the regulation of the action voltage and the return voltage cannot be completed independently, and the regulation flexibility is still to be further improved.

Disclosure of Invention

The embodiment of the utility model provides a relay, which aims to solve the problem that action voltage and reset voltage are inconvenient to adjust in the related technology.

The relay provided by the embodiment of the utility model comprises a base, a contact assembly, a push rod mechanism and an elastic piece, wherein the contact assembly comprises a contact or separable static reed and a movable reed, and the static reed is fixedly connected to the base; a push rod mechanism movable relative to the base between a first position and a second position along a contact separation direction of the contact assembly; the elastic piece comprises a first elastic part and a second elastic part; the movable reed is arranged on the push rod mechanism through the first elastic part, and the first elastic part is used for providing contact pressure when the push rod mechanism is in the first position; the second elastic portion is configured to provide an elastic force to the push rod mechanism that moves toward the first position when the push rod mechanism is in the second position.

According to some embodiments of the utility model, when the push rod mechanism is in the second position, one end of the second elastic portion abuts against the movable spring, and the other end of the second elastic portion abuts against the base.

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 relay further comprises a permanent magnet;

the push rod mechanism comprises a push rod and an iron core, wherein the iron core is connected with the push rod, and one side of the iron core, which is opposite to the push rod, is provided with the permanent magnet.

According to some embodiments of the utility model, the base comprises:

a bottom wall;

a side wall connected to the bottom wall; and

a stop part connected to the inner surface of the side wall and used for abutting against the second elastic part; the second elastic portion is not in contact with the stopper portion when the push rod mechanism is in the first position.

According to some embodiments of the utility model, the second elastic part includes two elastic pieces, and the two elastic pieces are respectively disposed at two sides of the first elastic part in the width direction of the movable reed;

the two ends of each elastic piece along the length direction of the movable reed are respectively provided with a second elastic arm, and the second elastic arms are used for propping between the movable reed and the base.

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

the bulge of the second bending part is used for abutting against the movable reed; and

and one end of the spring strip is connected to the second bending part, and the other end of the spring strip is used for being abutted with the base.

According to some embodiments of the utility model, the elastic element is fixedly connected with the movable reed through the first elastic part.

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

the main reed is provided with connecting parts along the two ends of the length direction of the movable reed, the connecting parts are fixedly connected with the movable reed, and an opening is arranged between the two connecting parts;

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 being abutted with the push rod mechanism.

According to some embodiments of the utility model, the other end of the elastic arm has a first bending portion, and a protrusion of the first bending portion is used for abutting against the push rod mechanism.

According to some embodiments of the utility model, the connecting part is provided with a connecting hole, and the movable contacts arranged at two ends of the movable reed penetrate through the connecting hole.

According to some embodiments of the utility model, the plane of the opening is not coplanar with the plane of the connecting portion.

According to some embodiments of the utility model, the push rod mechanism comprises a push rod, the push rod comprises a rod part and a bottom part, the bottom part is connected to one axial end of the rod part, and the movable reed is movable relative to the bottom part along the axial direction of the rod part between a third position and a fourth position; the first elastic part is abutted between the bottom part and the movable reed and is used for applying an elastic force for moving towards the third position to the movable reed; the elastic piece is arranged between the bottom and the movable reed; when the push rod mechanism is positioned at the first position, the movable reed is positioned at the fourth position; when the push rod mechanism is in the second position, the movable reed is in the third position.

According to some embodiments of the utility model, the push rod further comprises a first side part and a second side part, wherein the first side part and the second side part are connected to the bottom part and are oppositely arranged along the length direction of the movable reed;

the first side part is provided with a first through hole, the second side part is provided with a second through hole, and the movable reed and the elastic piece are both arranged through the first through hole and the second through hole; and in the third position, the movable reed is respectively abutted with the hole wall of the first through hole and the hole wall of the second through hole.

According to some embodiments of the utility model, the first elastic portion and the second elastic portion are of unitary construction.

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 action voltage of the relay can be adjusted by adjusting the elastic force of the second elastic part.

Furthermore, when the relay has a permanent magnet (i.e., the relay has a magnetic holding function), the magnitude of the reset voltage of the relay can be adjusted independently by adjusting the magnitude of the elastic force of the first elastic portion without affecting the action voltage, and the magnitude of the action voltage can be adjusted independently by adjusting the magnitude of the elastic force of the second elastic portion without affecting the reset voltage, so that the action voltage and the reset voltage are in a state without differential pressure. At this time, the permanent magnet 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.

Drawings

Fig. 1 shows a top view of a relay according to an embodiment of the utility model, with the upper cover omitted and the contact assembly in a fully open state.

Figure 2 shows a cross-sectional view along A-A in figure 1.

Fig. 3 shows a cross-sectional view along B-B in fig. 2.

Fig. 4 is a schematic cross-sectional view of the contact assembly of fig. 1 in a fully closed state, with the push rod mechanism and magnetic circuit mechanism omitted.

Fig. 5 is a schematic cross-sectional view of the contact assembly of fig. 1 in a fully opened state, with the push rod mechanism and magnetic circuit mechanism omitted.

Fig. 6 is a schematic cross-sectional view of the relay of fig. 1, with the push rod mechanism and the magnetic circuit mechanism omitted, showing the second elastic portion of the elastic member just contacting the base.

Fig. 7 shows a schematic perspective view of the elastic member.

Fig. 8 shows a schematic side view of the elastic element.

Fig. 9 shows a perspective view of the push rod.

Fig. 10 is a schematic view showing the assembled push rod, yoke plate, elastic member and contact assembly.

Fig. 11 shows a side view of fig. 10.

Fig. 12 shows a cross-sectional view of C-C of fig. 11.

Fig. 13 shows a top view of an embodiment relay of the present utility model with the upper cover omitted and the contact assembly in a fully closed state.

Fig. 14 shows a cross-sectional view along D-D in fig. 13.

Fig. 15 shows a cross-sectional view along E-E in fig. 14.

Fig. 16 is a schematic perspective view of the contact assembly of fig. 1 in a fully closed state, with the push rod mechanism and magnetic circuit mechanism omitted.

Fig. 17 is a schematic perspective view of the contact assembly of fig. 1 in a fully opened state, with the push rod mechanism and the magnetic circuit mechanism omitted.

Fig. 18 is a perspective view showing the state in which the second elastic portion of the elastic member is just in contact with the base during the disconnection of the relay of fig. 1, wherein the push rod mechanism and the magnetic circuit mechanism are omitted.

Wherein reference numerals are as follows:

10. a base; 130. a bottom wall; 140. a sidewall; 150. a stop portion; 20. a push rod mechanism; 210. a push rod; 211. a stem portion; 212. a bottom; 213. a first side portion; 2131. a first through hole; 214. a second side portion; 2141. a second through hole; 215. a spacer; 216. a third side portion; 2161. a third through hole; 217. a fourth side portion; 2171. a fourth through hole; 220. an iron core; 30. a magnetic circuit mechanism; 310. a yoke structure; 311. a yoke plate; 3111. a through hole; 312. a U-shaped yoke; 320. a wire frame; 321. a central bore; 330. a coil; 340. a permanent magnet; 40. a contact assembly; 40a, a first contact assembly; 40b, a second contact assembly; 410. a first movable contact spring; 411. a first movable contact; 414. a first movable spring body; 420. a first static reed; 421. a first stationary spring body; 422. a first stationary contact; 430. a second movable contact spring; 431. a second movable contact; 434. the second movable spring body; 440. a second static reed; 441. the second static spring body; 442. a second stationary contact; 500. an elastic member; 510. a first elastic portion; 511. a main reed; 5111. a connection part; 5112. an opening; 5113. a connection hole; 512. a first elastic arm; 5121. a first bending part; 5122. a protrusion; 520. a second elastic part; 521. an elastic sheet; 522. a second elastic arm; 5221. a second bending part; 5222. a spring strip; 5223. a protrusion; 610. a first magnetizer; 620. a second magnetizer; d1, in the length direction; d2, width direction; d3, the movement direction.

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 3, fig. 1 is a plan view of the relay according to the embodiment of the present utility model, in which the upper cover is omitted and the contact assembly is in a completely opened state, fig. 2 is a sectional view taken along A-A in fig. 1, and fig. 3 is a sectional view taken along B-B in fig. 2. The relay of the embodiment of the present utility model includes a base 10, a push rod mechanism 20, a magnetic circuit mechanism 30, and a contact assembly 40. The push rod mechanism 20, the magnetic circuit mechanism 30 and the contact assembly 40 are provided on the base 10, and the magnetic circuit mechanism 30 passes through the push rod mechanism 20 to control contact or separation of the contact assembly 40.

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 magnetic circuit mechanism 30 includes a yoke structure 310, a bobbin 320, and a coil 330. The yoke structure 310 forms a chamber, and the bobbin 320 and the coil 330 are disposed within the chamber of the yoke structure 310. The coil 330 is wound around the outer circumference of the bobbin 320 to form a magnetic control loop. The wire holder 320 is provided with a center hole 321 in a contact-contact separation direction of the contact assembly 40, and the center hole 321 is used for passing through one end of the push rod mechanism 20.

As an example, the yoke structure 310 includes a yoke plate 311 and a U-shaped yoke 312, and the yoke plate 311 is connected with the U-shaped yoke 312 to form a ring yoke. The yoke plate 311 is provided with a through hole 3111, and the through hole 3111 is used for the push rod mechanism 20 to pass through.

Of course, in other embodiments, the yoke structure 310 may further include a cylindrical yoke and a yoke plate 311, and the cylindrical yoke and the yoke plate 311 are connected to form a ring yoke.

The magnetic circuit mechanism 30 further includes two permanent magnets 340, and the two permanent magnets 340 are disposed on the bobbin 320 and located on two sides of the movement direction D3 of the push rod mechanism 20. Yoke structure 310 is arranged outside bobbin 320 and permanent magnet 340 to form a magnetic circuit structure for magnetic retention.

Of course, in other embodiments, the permanent magnet 340 may be omitted, but 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. 3, the pusher mechanism 20 is movable between a first position and a second position with respect to the base 10 in the contact-separation direction of the contact assembly 40. The push rod mechanism 20 includes a push rod 210 and a plunger 220, the plunger 220 being connected to the push rod 210. The iron core 220 can move along the contact or separation direction under the action of the magnetic control loop formed by the coil 330, and then drives the pushing rod 210 to move so as to control the contact or separation of the contact assembly 40. The side of the iron core 220 facing away from the push rod 210 is provided with a permanent magnet 340.

In this embodiment, the push rod mechanism 20 includes two iron cores 220, the two iron cores 220 may be disposed on two sides of the push rod 210, and a permanent magnet 340 is disposed on a side of each iron core 220 facing away from the push rod 210.

With continued reference to fig. 1-3, the contact assembly 40 includes a movable reed (410, 430) and a stationary reed (420,440), the stationary reed (420,440) is fixedly mounted on the base 10, and the movable reed (410, 430) is mounted on the push rod mechanism 20 and follows the push rod mechanism 20.

In the present embodiment, the contact assemblies 40 are two sets, respectively, a first contact assembly 40a and a second contact assembly 40b, and the first contact assembly 40a and the second contact assembly 40b are arranged along the movement direction D3 of the push rod mechanism 20. And, the first contact assembly 40a is close to the magnetic circuit mechanism 30, and the second contact assembly 40b is distant from the magnetic circuit mechanism 30.

The first contact assembly 40a includes a first movable reed 410 and two first stationary reeds 420. The second contact assembly 40b includes a second movable reed 430 and two second stationary reeds 440. Both ends of the first movable reed 410 can be respectively contacted with or separated from the two first fixed reeds 420, and both ends of the second movable reed 430 can be respectively contacted with or separated from the two second fixed reeds 440.

Of course, in other embodiments, the contact assemblies 40 may be in a group or other number.

Both ends of the movable reed (410, 430) in the longitudinal direction D1 serve as movable contacts, and the movable contacts may protrude from other parts of the movable reed (410, 430) or may be flush with other parts. The part of the static reed (420,440) contacted with the movable contact is used as the static contact, and the static contact can be protruded from other parts of the static reed (420,440) or can be flush with other parts.

As an example, the first movable reed 410 includes a first movable reed body 414 and a first movable contact 411, the first movable contact 411 and the first movable reed body 414 are in a split structure, and the first movable contact 411 and the first movable reed body 414 can be connected by riveting, but not limited to this. The first static spring 420 includes a first static spring body 421 and a first static contact 422, the first static contact 422 and the first static spring body 421 are in a split structure, and the first static contact 422 and the first static spring body 421 can be connected by riveting, but not limited to.

The second movable spring 430 includes a second movable spring body 434 and a second movable contact 431, where the second movable contact 431 and the second movable spring body 434 are in a split structure, and the second movable contact 431 and the second movable spring body 434 may be connected by riveting, but not limited to. The second static spring 440 includes a second static spring body 441 and a second static contact 442, where the second static contact 442 and the second static spring body 441 are in a split structure, and the second static contact 442 and the second static spring body 441 may be connected by riveting, but not limited thereto.

Of course, in another embodiment, the first movable contact 411 and the first movable spring body 414 may be of an integral structure; the first stationary contact 422 and the first stationary spring body 421 may be of an integral structure; the second movable contact 431 and the second movable spring body 434 may be of an integral structure; the second stationary contact 442 and the second stationary spring body 441 may be integrally formed. The relay according to the embodiment of the present utility model further includes a short circuit resisting structure, where the short circuit resisting structure may include a first magnetizer 610 and a second magnetizer 620, the first magnetizer 610 is fixedly connected to the base 10, the second magnetizer 620 is fixedly connected to the first movable reed 410, and at least a part of the second magnetizer 620 is disposed on a side of the first movable reed 410 opposite to the first magnetizer 610. When a short-circuit current passes through the first movable reed 410, a suction force in the contact pressure direction is generated between the first conductive magnet 610 and the second conductive magnet 620, and the suction force can resist an electric repulsive force generated between the movable contact of the first movable reed 410 and the stationary contact of the first stationary reed 420 due to the short-circuit current, so that the movable contact of the first movable reed 410 and the stationary contact of the first stationary reed 420 are ensured not to be sprung.

As shown in fig. 3, the relay further includes elastic members 500, and the number of the elastic members 500 corresponds to the number of the contact assemblies 40. In the present embodiment, the relay includes two elastic members 500, and the two elastic members 500 are respectively connected to the first movable reed 410 of the first contact assembly 40a and the second movable reed 430 of the second contact assembly 40 b.

The elastic member 500 includes a first elastic portion 510 and a second elastic portion 520, and the first elastic portion 510 and the second elastic portion 520 are integrally formed. The movable reed (410, 430) is disposed on the push rod 210 of the push rod mechanism 20 through a first elastic portion 510, the first elastic portion 510 is used for providing a contact pressure when the push rod mechanism 20 is in the first position, and the second elastic portion 520 is used for providing an elastic force for moving the push rod mechanism 20 toward the first position when the push rod mechanism 20 is in the second position.

Of course, in other embodiments, the first elastic portion 510 and the second elastic portion 520 may be in a split structure.

As shown in fig. 4 and 5 in combination with fig. 13 to 18, fig. 4 is a schematic cross-sectional view of the contact assembly of fig. 1 in a fully closed state, and fig. 5 is a schematic cross-sectional view of the contact assembly of fig. 1 in a fully open state, wherein the push rod mechanism 20 and the magnetic circuit mechanism 30 are omitted from fig. 4 and 5. Fig. 13 is a top view of the relay according to the embodiment of the present utility model, wherein the upper cover is omitted and the contact assembly is in a fully closed state, fig. 14 is a sectional view taken along D-D in fig. 13, and fig. 15 is a sectional view taken along E-E in fig. 14. Fig. 16 is a schematic perspective view of the contact assembly of fig. 1 in a fully closed state, with the push rod mechanism and magnetic circuit mechanism omitted. Fig. 17 is a schematic perspective view of the contact assembly of fig. 1 in a fully opened state, with the push rod mechanism and the magnetic circuit mechanism omitted. Fig. 18 is a perspective view showing the state in which the second elastic portion of the elastic member is just in contact with the base during the disconnection of the relay of fig. 1, wherein the push rod mechanism and the magnetic circuit mechanism are omitted. When the contact assembly 40 is in the fully closed state, the pusher mechanism 20 is in a first position relative to the base 10. When the contact assembly 40 is in the fully open state, the push rod mechanism 20 is in the second position relative to the base 10.

Note that, when the contact assembly 40 is in the fully closed state, this means: after the movable reed and the static reed of the contact assembly 40 are contacted and the overstroke is completed, the contact assembly 40 is in a state (shown in fig. 4, 13, 15 and 16); the contact assembly 40 being in the fully open state means that: the movable contact spring and the stationary contact spring of the contact assembly 40 are in a state in which the contact assembly 40 is in a maximum contact gap after being disconnected (as shown in fig. 1, 3, 5 and 17).

When the contact assembly 40 is in the fully closed state, the push rod mechanism 20 is in the first position, and the first elastic portion 510 is used for providing the overstroke contact pressure. When the contact assembly 40 is in the fully opened state, the push rod mechanism 20 is in the second position, and the second elastic portion 520 is used to provide an elastic force to the push rod mechanism 20 that moves toward the first position. Since the second elastic portion 520 provides an elastic force to the push rod mechanism 20 when the contact assembly 40 is in the completely opened state, the elastic force causes the push rod mechanism 20 to have a tendency to move to the first position, and thus when the push rod mechanism 20 is required to move again (i.e., the contact assembly 40 is switched to the closed state) to energize the coil, since the push rod mechanism 20 has been subjected to the elastic force exerted by the second elastic portion 520 at this time, the voltage of the energization of the coil 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 520. Specifically, when the elastic force provided by the second elastic portion 520 is increased, the operating voltage of the relay becomes smaller. When the elastic force provided by the second elastic portion 520 is reduced, the operation voltage of the relay is increased accordingly.

Further, when the relay has the permanent magnet 340 (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 510. Specifically, when the elastic force provided by the first elastic portion 510 is increased, the return voltage of the relay becomes smaller. When the elastic force provided by the first elastic portion 510 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 520, the magnitude of the actuation voltage can be adjusted independently without affecting the reset voltage, and by adjusting the magnitude of the elastic force of the first elastic portion 510, the magnitude of the reset voltage of the relay can be adjusted flexibly without affecting the actuation voltage, so that the actuation voltage and the reset voltage are in a state without differential pressure. At this time, the permanent magnet 340 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 can be appreciated that the magnitude of the elastic force of the second elastic portion 520 can be adjusted by changing the elastic modulus of the second elastic portion 520, for example, by changing the elastic modulus of the second elastic portion 520: the magnitude of the elastic force of the second elastic portion 520 may be adjusted by changing the deformation of the second elastic portion 520 in the uncompressed state, and the width of the second elastic portion 520 may be changed, but is not limited thereto.

As shown in fig. 4, when the push rod mechanism 20 is in the first position (the contact assembly 40 is in the fully closed state), the second elastic portion 520 does not provide an elastic force to the push rod mechanism 20.

As shown in fig. 5, when the push rod mechanism 20 is in the second position (the contact assembly 40 is in the completely open state), one end of the second elastic portion 520 abuts against the movable springs (410, 430), and the other end of the second elastic portion 520 abuts against the base 10.

Of course, in other embodiments, when the push rod mechanism 20 is in the second position, one end of the second elastic portion 520 is also abutted against the push rod 210 of the push rod mechanism 20, and the other end of the second elastic portion 520 is abutted against the base 10.

With continued reference to fig. 5, the base 10 includes a bottom wall 130, side walls 140, and a stop 150. The side wall 140 is connected to the bottom wall 130, the side wall 140 may encircle the edge of the bottom wall 130, and the side wall 140 and the bottom wall 130 together enclose a space for accommodating the push rod mechanism 20, the magnetic circuit mechanism 30, the contact assembly 40, the elastic member 500, and the like. The stopper 150 is connected to an inner surface of the side wall 140 and/or an inner surface of the bottom wall 130 for abutting against the second elastic portion 520.

As shown in fig. 6, fig. 6 is a schematic cross-sectional view of the second elastic portion 520 of the elastic member 500 just in contact with the base during disconnection of the relay of fig. 1, wherein the push rod mechanism 20 and the magnetic circuit mechanism 30 are omitted. When the contact assembly 40 of the relay is switched from the fully opened state to the fully closed state (i.e., from fig. 5 to fig. 4), an intermediate state is passed in which the second elastic portion 520 of the elastic member 500 is just contacted with the base 10.

As shown in fig. 7 and 8, fig. 7 is a perspective view of the elastic member 500, and fig. 8 is a side view of the elastic member 500. The first elastic portion 510 of the elastic member 500 includes a main spring 511 and a first elastic arm 512, the main spring 511 extends along a length direction D1 of the movable spring (410, 430), and connecting portions 5111 are provided at two ends of the movable spring (410, 430) along the length direction D1, the connecting portions 5111 are fixedly connected with the movable spring (410, 430), and an opening 5112 is provided between the two connecting portions 5111. One end of the first elastic arm 512 is connected to the edge of the opening 5112, and the other end is used for abutting against the push rod mechanism 20. The other end of the first elastic arm 512 has a first bending portion 5121, and a protrusion 5122 of the first bending portion 5121 is used for abutting against the push rod mechanism 20.

In the present embodiment, the first elastic portion 510 includes two first elastic arms 512, and the two first elastic arms 512 are disposed in a central symmetry with respect to the center of the opening 5112.

The connection portion 5111 has a connection hole 5113, and movable contacts provided at both ends of the movable springs (410, 430) are inserted into the connection hole 5113 (as shown in fig. 9). The plane of the opening 5112 is not coplanar with the plane of the connection 5111.

With continued reference to fig. 7 and 8, the second elastic portion 520 of the elastic member 500 includes two elastic pieces 521, and the two elastic pieces 521 are respectively disposed on two sides of the first elastic portion 510 along the width direction D2 of the movable reed (410, 430). Each elastic piece 521 has a second elastic arm 522 at both ends in the length direction D1 of the movable reed (410, 430), and the second elastic arm 522 is configured to be pressed between the movable reed (410, 430) and the base 10.

The magnitude of the elastic force provided by the second elastic arm 522 can be adjusted by adjusting the initial deformation of the second elastic arm 522 in the uncompressed state, so as to adjust the magnitude of the action voltage of the relay.

The second elastic arm 522 includes a second bending portion 5221 and a spring bar 5222, wherein a protrusion 5223 of the second bending portion 5221 is configured to abut against the movable spring (410, 430), one end of the spring bar 5222 is connected to the second bending portion 5221, and the other end is configured to abut against the base 10.

When the contact assembly 40 is in the fully open state (i.e., the push rod mechanism 20 is in the second position), the spring strips 5222 deform to provide the push rod mechanism 20 with a spring force that tends to move the push rod mechanism 20 toward the first position.

As shown in fig. 9 to 12, fig. 9 is a perspective view showing the push rod, fig. 10 is a view showing the push rod 210, the yoke plate 311, the elastic member 500 and the contact assembly 40 assembled, fig. 11 is a side view showing fig. 10, and fig. 12 is a cross-sectional view of C-C in fig. 11. The push rod 210 includes a rod portion 211, a bottom portion 212, a first side portion 213, and a second side portion 214. The first movable reed 410 is connected to the bottom 212 through the first elastic portion 510. One of the elastic members 500 is provided between the first movable reed 410 and the bottom 212. The rod 211 is movably inserted through the through hole 3111 of the yoke plate 311, and the core 220 is connected to the rod 211. The bottom 212 is connected to one axial end of the rod 211, and the first side 213 and the second side 214 are connected to the bottom 212 and are disposed opposite to each other along the length direction D1 of the first movable reed 410. The first side 213 is provided with a first through hole 2131 and the second side 214 is provided with a second through hole 2141. The first movable reed 410 and the elastic member 500 are disposed through the first through hole 2131 and the second through hole 2141. Along the axial direction of the lever portion 211 (i.e., the movement direction D3 of the push rod mechanism 20), the first movable reed 410 is movable between the third position and the fourth position with respect to the first through hole 2131 and the second through hole 2141. In the third position, the first movable reed 410 abuts against the wall of the first through hole 2131 and the wall of the second through hole 2141, respectively. The first elastic portion 510 abuts between the bottom portion 212 and the first movable reed 410, for applying an elastic force to the first movable reed 410 to move toward the third position. The connection portion 5111 of the first elastic portion 510 is connected to the first movable reed 410, and the protrusion 5122 of the first bending portion 5121 of the first elastic portion 510 abuts against the bottom 212.

When the push rod mechanism 20 is in the first position, the first movable reed 410 is in the fourth position; when the push rod mechanism 20 is in the second position, the first movable reed 410 is in the third position.

During the closing of the first contact assembly 40a of the relay, the push rod 210 drives the first movable reed 410 to move toward the first stationary reed 420. Before the first movable reed 410 contacts the first static reed 420, the first movable reed 410 is in contact with the hole wall of the first through hole 2131 and the hole wall of the second through hole 2141, respectively, under the action of the first elastic portion 510, and is in the third position. After the first movable reed 410 contacts with the first static reed 420, since the first static reed 420 is fixedly mounted on the base 10, the first movable reed 410 is stopped by the first static reed 420 and cannot move continuously, at this time, the pushing rod 210 moves continuously, the first elastic arm 512 of the first elastic portion 510 deforms and is gradually compressed until the over-stroke is completed, at this time, the first movable reed 410 is at a fourth position relative to the first through hole 2131 and the second through hole 2141, and the push rod mechanism 20 is at the first position. During the movement of the push rod mechanism 20 from the second position to the first position, the second elastic arm 522 of the second elastic portion 520 is moved from the compression deformed state to the state in which the second elastic arm 522 is in contact with the stopper 150 of the base 10, and then to the state in which the second elastic arm 522 is separated from the stopper 150 of the base 10.

During the separation of the first contact assembly 40a of the relay, the process of moving the push rod 210 in a direction away from the first static spring plate 420 may be divided into two stages: in the first stage, the push rod 210 moves while the first movable reed 410 does not move with the push rod 210. In the first stage, the first movable reed 410 moves from the fourth position to the third position with respect to the first through hole 2131 and the second through hole 2141. At the beginning of the second stage, the first movable reed 410 has moved to the third position with respect to the first through hole 2131 and the second through hole 2141, and at this time, the first movable reed 410 abuts against the hole wall of the first through hole 2131 and the hole wall of the second through hole 2141, respectively. Then, the first movable reed 410 is moved along with the movement of the pushing rod 210, so that the first movable reed 410 is separated from the first static reed 420. In the second stage, when the pushing rod 210 drives the first movable reed 410 to move, the first movable reed 410 is abutted with the hole wall of the first through hole 2131 and the hole wall of the second through hole 2141, which is equivalent to that the pushing rod 210 acts on the first movable reed 410 through the first side 213 and the second side 214, so that the first movable reed 410 is separated from the first static reed 420.

During the movement of the push rod mechanism 20 to drive the first movable reed 410 to the second position, the second elastic arm 522 of the second elastic portion 520 will first contact the stop portion 150 of the base 10, and as the push rod mechanism 20 moves, the second elastic arm 522 is deformed and compressed to provide an elastic force to the push rod mechanism 20 until the push rod mechanism 20 moves to the second position.

It can be appreciated that, on the one hand, the first elastic portion 510 and the second elastic portion 520 of the elastic member 500 are integrally configured, and the elastic member 500 and the first movable reed 410 are both disposed through the first through hole 2131 and the second through hole 2141, the first elastic portion 510 is configured to provide an over-stroke contact pressure, and the second elastic portion 520 is configured to provide an elastic force moving toward the contact closing direction to the push rod mechanism 20, so as to reduce the action voltage of the relay, so that the relay of the embodiment is compact in structure after the elastic member 500, the first movable reed 410 and the push rod 210 are assembled on the premise of meeting the requirement of flexibly adjusting the action voltage, thereby being beneficial to realizing miniaturization of the relay.

On the other hand, the position where the hole wall of the first through hole 2131 abuts against the first movable reed 410 corresponds to one force application point, the position where the hole wall of the second through hole 2141 abuts against the first movable reed 410 corresponds to another force application point, and by setting two force application points, the two force application points are arranged along the length direction D1 of the first movable reed 410, the pulling force stressed area of the pushing rod 210 borne by the first movable reed 410 is larger, so that the pushing rod 210 drives the first movable reed 410 to move more stably.

With continued reference to fig. 9-12, the push rod 210 further includes a spacer 215, a third side 216 and a fourth side 217, the third side 216 is connected to an end of the first side 213 opposite the bottom 212, the fourth side 217 is connected to an end of the second side 214 opposite the bottom 212, and the spacer 215 is disposed between the third side 216 and the fourth side 217. The third side portion 216 has a third through hole 2161, the fourth side portion 217 has a fourth through hole 2171, the second movable contact spring 430 and the other elastic member 500 are provided to pass through the third through hole 2161 and the fourth through hole 2171, the third through hole 2161 is located at one side of the spacing portion 215 in the axial direction of the rod portion 211, and the first through hole 2131 is located at the other side of the spacing portion 215 in the axial direction of the rod portion 211. The fourth through hole 2171 is located at one side of the spacer 215 in the axial direction of the lever 211, and the second through hole 2141 is located at the other side of the spacer 215 in the axial direction of the lever 211. The second movable reed 430 is movable relative to the third through hole 2161 and the fourth through hole 2171 in the axial direction of the lever portion 211 between a fifth position and a sixth position. In the fifth position, second movable reed 430 abuts against the wall of third through hole 2161 and the wall of fourth through hole 2171, respectively. Another elastic member 500 is provided between the second movable contact spring 430 and the spacer 215 for applying an elastic force to the second movable contact spring 430 toward the fifth position.

The operation of the push rod 210 to drive the second movable reed 430 to contact with or separate from the first stationary reed 420 is the same as that of the first contact assembly 40a, and will not be described again.

Therefore, the position of the hole wall of the third through hole 2161 abutting against the second movable reed 430 corresponds to one force acting point, the position of the hole wall of the fourth through hole 2171 abutting against the second movable reed 430 corresponds to another force acting point, and by setting two force acting points, the two force acting points are arranged along the length direction D1 of the second movable reed 430, the pulling force stressed area of the pushing rod 210 borne by the second movable reed 430 is larger, so that the pushing rod 210 drives the second movable reed 430 to move more stably.

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," 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

1. A relay, comprising:

a base;

the contact assembly comprises a contact or separable static spring plate and a movable spring plate, and the static spring plate is fixedly connected to the base;

a push rod mechanism movable between a first position and a second position relative to the base in a contact separation direction of the contact assembly; and

an elastic member including a first elastic portion and a second elastic portion; the movable reed is arranged on the push rod mechanism through the first elastic part, and the first elastic part is used for providing contact pressure when the push rod mechanism is in the first position; the second elastic portion is configured to provide an elastic force to the push rod mechanism that moves toward the first position when the push rod mechanism is in the second position.

2. The relay according to claim 1, wherein one end of the second elastic portion abuts against the movable reed and the other end of the second elastic portion abuts against the base when the push rod mechanism is in the second position.

3. The relay of claim 1, 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.

4. The relay of claim 1, wherein the relay further comprises a permanent magnet;

5. The relay according to any one of claims 1 to 4, wherein the base comprises:

a bottom wall;

a side wall connected to the bottom wall; and

6. The relay according to any one of claims 1 to 4, wherein the second elastic portion includes two elastic pieces, the two elastic pieces being provided on both sides of the first elastic portion in the width direction of the movable reed, respectively;

7. The relay of claim 6, wherein the second resilient arm comprises:

8. The relay according to any one of claims 1 to 4, wherein the elastic member is fixedly connected to the movable reed through the first elastic portion.

9. The relay of claim 8, wherein the first resilient portion comprises:

10. The relay according to claim 9, wherein the other end of the elastic arm has a first bent portion, and a protrusion of the first bent portion is used for abutting against the push rod mechanism.

11. The relay according to claim 9, wherein the connecting portion has a connecting hole, and the movable contacts provided at both ends of the movable reed are penetrated through the connecting hole.

12. The relay of claim 9, wherein the plane of the opening is non-coplanar with the plane of the connection.

13. The relay according to any one of claims 1 to 4, wherein the push rod mechanism includes a push rod including a rod portion and a bottom portion, the bottom portion being connected to one end of the rod portion in an axial direction thereof, and the movable reed being movable relative to the bottom portion between a third position and a fourth position in the axial direction of the rod portion; the first elastic part is abutted between the bottom part and the movable reed and is used for applying an elastic force for moving towards the third position to the movable reed; the elastic piece is arranged between the bottom and the movable reed;

when the push rod mechanism is positioned at the first position, the movable reed is positioned at the fourth position; when the push rod mechanism is in the second position, the movable reed is in the third position.

14. The relay of claim 13, wherein the push rod further comprises a first side portion and a second side portion, each of the first side portion and the second side portion being connected to the bottom portion and disposed opposite along a length of the movable reed;

15. The relay according to any one of claims 1 to 4, wherein the first elastic portion and the second elastic portion are of a unitary structure.