Relay

Abstract

The invention discloses a relay. The relay comprises a contact assembly and a stopper. The contact assembly comprises two movable spring parts which are arranged side by side, and a parallel circuit structure is formed when the two movable spring parts make contact with each other. The stop piece is arranged between the two movable spring parts and used for stopping the two movable spring parts, so that the deflection of bending deformation generated after the two movable spring parts attract each other due to the fact that current passes through the parallel circuit structure is smaller than or equal to a threshold value.

Description

Technical Field

[0001] The present application relates to the technical field of electric control devices, and in particular to a relay. Background Art

[0002] A relay is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit). It is usually used in automatic control circuits. A relay is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic regulation, safety protection, and circuit conversion in the circuit.

[0003] As one type of relay, the magnetic latching relay includes two sets of moving spring parts. When the contacts of the two sets of moving springs are in contact, the relay is in a closed state, and when the contacts of the two sets of moving springs are separated, the relay is in an open state. However, when the contacts of the moving spring parts in the related art are closed, the contacts are prone to instantaneous disconnection, which in turn causes contact splashing, and in severe cases even causes the relay to explode, posing a major safety hazard. Summary of the invention

[0004] The embodiment of the present application provides a relay to solve the problem of instantaneous disconnection of relay contacts existing in the related art.

[0005] The relay of the embodiment of the present application includes:

[0006] A contact assembly, comprising two movable spring parts arranged side by side, wherein the two movable spring parts form a parallel circuit structure when in contact with each other; and

[0007] The stopper is arranged between the two movable spring parts and is used to stop the two movable spring parts so that the deflection of the two movable spring parts generated by bending deformation after being attracted to each other due to current passing through the parallel circuit structure is less than or equal to a threshold value.

[0008] According to some embodiments of the present application, the stopper is made of an elastic material and is configured so that when the two movable spring parts are bent and deformed to squeeze the stopper, the stopper can be deformed;

[0009] When the deflection of the bending deformation of the movable spring part is equal to the threshold, the suction force between the two movable spring parts is equal to the sum of the first elastic force generated by the deformation of the stopper and the second elastic force generated by the deformation of the movable spring part.

[0010] According to some embodiments of the present application, the two movable spring parts are respectively a first movable spring part and a second movable spring part, the first movable spring part includes a first movable spring piece, a first static contact and a second movable contact, the first static contact and the second movable contact are respectively arranged at two ends of the length direction of the first movable spring piece; the second movable spring part includes a second movable spring piece, a first movable contact and a second static contact, the first movable contact and the second static contact are respectively arranged at two ends of the length direction of the second movable spring piece, the first movable contact is used to contact or separate with the first static contact, and constitute a first contact group, the second movable contact is used to contact or separate with the second static contact, and constitute a second contact group;

[0011] Wherein, the stopper is located between the first movable spring piece and the second movable spring piece, and between the first contact point group and the second contact point group.

[0012] According to some embodiments of the present application, the relay further includes a housing, the contact assembly and the stopper are located inside the housing, and the stopper is connected to the housing.

[0013] According to some embodiments of the present application, the stopper and the housing are an integral structure.

[0014] According to some embodiments of the present application, the housing includes a first shell and a second shell that are interlocked, and the stopper is integrally formed on the inner wall surface of the first shell or the inner wall surface of the second shell.

[0015] According to some embodiments of the present application, the stopper comprises a middle portion, two first stop portions and two second stop portions, and the first stop portion and the second stop portion are respectively disposed at two ends of the middle portion along the length direction of the contact assembly;

[0016] Along the thickness direction of the contact component, the two first stop portions are arranged at intervals, and the two second stop portions are arranged at intervals.

[0017] According to some embodiments of the present application, the stopper is a hollow cylindrical structure, and one end of the cylindrical structure is connected to the outer shell.

[0018] According to some embodiments of the present application, the stopper and the housing are separate structures.

[0019] According to some embodiments of the present application, a slot is provided on the inner wall surface of the shell, and the stopper is inserted into the slot.

[0020] According to some embodiments of the present application, the stopper includes a connecting portion and an elastic portion, the connecting portion is connected to the housing, the elastic portion is connected to the connecting portion, and has a wavy structure;

[0021] The elastic portion includes a plurality of peak sections and a plurality of trough sections, and the peak sections and the trough sections are alternately arranged along a length direction of the contact component.

[0022] According to some embodiments of the present application, the stopper is made of a rigid material;

[0023] When the bending deformation of the movable spring part is less than the threshold or no bending deformation occurs, there is a gap between the stopper and the movable spring part; when the bending deformation of the movable spring part is equal to the threshold, the stopper abuts against the movable spring part.

[0024] According to some embodiments of the present application, when the deflection of the bending deformation of the two movable spring parts is equal to the threshold value, the two movable spring parts still maintain contact and form the parallel circuit structure.

[0025] According to some embodiments of the present application, when the deflection of the bending deformation of the two movable spring parts is greater than the threshold value, the two movable spring parts are disconnected or form a series circuit structure.

[0026] One embodiment of the above application has at least the following advantages or beneficial effects:

[0027] The relay of the embodiment of the present application includes a stopper disposed between two movable spring parts, and the stopper is used to stop the two movable spring parts so that the deflection of the bending deformation caused by the mutual attraction of the two movable spring parts due to the current passing through the parallel circuit structure is less than or equal to a threshold value, which allows the two movable spring parts to produce a small bending deformation due to the suction force, and prevents the two movable spring parts from being over-attracted and producing a large bending deformation. On the one hand, the stopper ensures that the two movable spring parts can produce a small bending deformation, and can ensure that sufficient suction can be generated between the two movable spring parts to resist the electric repulsion caused by the short-circuit current between the contacts, and avoid the contacts being disconnected instantly and causing the relay to explode. On the other hand, the stopper prevents the two movable spring parts from producing a large bending deformation, so as to prevent the movable spring parts from being over-deformed and causing the contacts to be disconnected instantly, and at the same time avoid the problems of contact splashing and relay explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Shown is a schematic diagram of an exploded view of a relay according to an embodiment of the present application.

[0029] Figure 2 What is shown is a schematic diagram of the relay of the embodiment of the present application with the first housing omitted.

[0030] Figure 3 The diagram shows the bending deformation of the first movable spring piece and the second movable spring piece.

[0031] Figure 4 The diagram shows a schematic diagram of the stopper of the first embodiment being integrally connected to the inner wall surface of the second shell.

[0032] Figure 5 The diagram shows a schematic diagram of the stopper of the first embodiment being integrally connected to the inner wall surface of the first shell.

[0033] Figure 6 The diagram shows a schematic diagram of the stopper of the second embodiment being integrally connected to the inner wall surface of the second shell.

[0034] Figure 7 FIG. 1 is a schematic diagram showing that the stopper of the third embodiment is installed on the second housing.

[0035] Figure 8 Shown is a three-dimensional schematic diagram of a stopper according to a third embodiment.

[0036] The reference numerals are described as follows:

[0037] 100, housing; 110, first housing; 120, second housing; 121, slot;

[0038] 200, contact assembly; 200a, first contact group; 200b, second contact group; 210, first movable spring portion; 211, first movable spring piece; 212, first stationary contact; 213, second movable contact; 220, second movable spring portion; 221, second movable spring piece; 222, first movable contact; 223, second stationary contact;

[0039] 300, armature assembly; 310, fixing member; 331, swing shaft;

[0040] 500, coil assembly;

[0041] 600, stopper; 610, middle portion; 620, first stop portion; 630, second stop portion; 640, connecting portion; 650, elastic portion; 651, peak section; 652, trough section. DETAILED DESCRIPTION

[0042] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0043] It is understood that the terms "including" and "having" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or components that are inherent to these processes, methods, products, or devices.

[0044] The present application embodiment provides a relay, which may be a magnetic latching relay, but is not limited thereto. Figure 1 As shown, the relay includes a housing 100, a contact assembly 200, an armature assembly 300 and a coil assembly 500. The contact assembly 200 is arranged in the housing 100 and has a closed state and an open state. The armature assembly 300 is arranged in the housing 100 and is used to drive the contact assembly 200 to switch from the closed state to the open state and from the open state to the closed state. The coil assembly 500 is arranged in the housing 100 and is electromagnetically coupled with the armature assembly 300.

[0045] In one embodiment, if Figure 1 As shown, the housing 100 may include a first shell 110 and a second shell 120, which are connected together to form a hollow chamber for accommodating the contact assembly 200, the armature assembly 300 and the coil assembly 500. The shape of the first shell 110 and the second shell 120 after being connected can have various embodiments. For example, in the embodiment of the present application, the shape of the first shell 110 and the second shell 120 after being connected is a hollow cuboid. Of course, in other embodiments, the shape of the first shell 110 and the second shell 120 after being connected can also be a hollow cylinder, or other suitable shapes.

[0046] As an example, the second housing 120 is in the shape of a rectangular parallelepiped with an opening, and the contact assembly 200, the armature assembly 300 and the coil assembly 500 are installed in the second housing 120 through the opening of the second housing 120. The first housing 110 is in the shape of a plate, and the first housing 110 is buckled in the opening of the second housing 120 to form a hollow rectangular parallelepiped.

[0047] Of course, in other embodiments, the first shell 110 and the second shell 120 are both in the shape of a rectangular parallelepiped and have an opening on one surface. The opening of the first shell 110 is arranged opposite to the opening of the second shell 120, and the first shell 110 and the second shell 120 are snapped together to form a hollow chamber for accommodating the contact assembly 200, the armature assembly 300 and the coil assembly 500.

[0048] like Figure 1 and Figure 2As shown, the contact assembly 200 includes two movable spring parts, which are arranged side by side along the thickness direction of the movable spring parts. Moreover, when the two movable spring parts are in contact, a parallel circuit structure is formed. For the convenience of description, the two movable spring parts are respectively defined as a first movable spring part 210 and a second movable spring part 220.

[0049] The first movable spring portion 210 includes a first movable spring piece 211, a first static contact 212, and a second movable contact 213, and the first static contact 212 and the second movable contact 213 are respectively mounted at both ends of the length direction of the first movable spring piece 211. As an example, the first static contact 212 and the second movable contact 213 can be mounted on the first movable spring piece 211 by riveting, but the present invention is not limited thereto.

[0050] The second movable spring portion 220 includes a second movable spring piece 221, a first movable contact 222, and a second static contact 223. The first movable contact 222 and the second static contact 223 are respectively mounted at both ends of the length direction of the second movable spring piece 221. As an example, the first movable contact 222 and the second static contact 223 can be mounted on the second movable spring piece 221 by riveting, but the present invention is not limited thereto.

[0051] like Figure 2 As shown, the first movable spring piece 211 and the second movable spring piece 221 are arranged side by side along the thickness direction of the movable spring piece and are substantially parallel to each other. Along the side-by-side arrangement direction of the first movable spring piece 211 and the second movable spring piece 221, the first movable contact 222 corresponds to the position of the first static contact 212, and the first movable contact 222 is used to contact or separate with the first static contact 212, and constitutes the first contact group 200a; the second movable contact 213 corresponds to the position of the second static contact 223, and the second movable contact 213 is used to contact or separate with the second static contact 223, and constitutes the second contact group 200b. The first contact group 200a and the second contact group 200b are arranged at intervals along the length direction of the contact assembly 200.

[0052] When the contact assembly 200 is in a closed state, the first movable contact 222 contacts the first stationary contact 212, and the second movable contact 213 contacts the second stationary contact 223, so that the first movable spring piece 211 and the second movable spring piece 221 form a parallel circuit structure. When the contact assembly 200 is in an open state, the first movable contact 222 is separated from the first stationary contact 212, and the second movable contact 213 is separated from the second stationary contact 223.

[0053] like Figure 1As shown, the relay further includes a fixing member 310, which is fixedly mounted in the housing 100. In one embodiment, the fixing member 310 is connected to the second housing 120, but is not limited thereto. The armature assembly 300 is located on the side of the second movable spring portion 220 facing away from the first movable spring portion 210. The armature assembly 300 is swingably connected to the fixing member 310 through a swing shaft 331, and is used to drive the first movable spring piece 211 and the second movable spring piece 221 to move respectively, so that the first movable contact 222 and the second movable contact 213 are respectively in contact with or separated from the first static contact 212 and the second static contact 223. The coil assembly 500 is configured to drive the armature portion 330 to swing relative to the fixing member 310 in response to an input signal.

[0054] It should be noted that the inventors of the present application have found in their research that when the contact assembly 200 is in a closed state, the first movable spring portion 210 and the second movable spring portion 220 form a parallel circuit structure, the first movable spring piece 211 and the second movable spring piece 221 are substantially parallel, and the direction of the current passing through the first movable spring piece 211 is the same as the direction of the current passing through the second movable spring piece 221, so the first movable spring piece 211 and the second movable spring piece 221 attract each other. When a large current flows through the contact assembly 200, a large suction force can be generated between the first movable spring piece 211 and the second movable spring piece 221, thereby causing the first movable spring piece 211 and the second movable spring piece 221 to switch from the original parallel setting to bending and deforming in a direction close to each other (such as Figure 3 shown).

[0055] For the sake of convenience, the following only takes the bending deformation of the second movable spring piece 221 as an example, and the first movable spring piece 211 can refer to the second movable spring piece 221, which will not be repeated here. When the second movable spring piece 221 is bent and deformed with a large deflection, the middle part of the second movable spring piece 221 will be tilted upward, which will cause the free end of the second movable spring piece 221 (the end with the movable contact) to tilt downward, which will cause the outer side of the first movable contact 222 on the second movable spring piece 221 to be disconnected from the first static contact 212, resulting in a contact disconnection phenomenon. At the same time, when the bending deformation of the second movable spring piece 221 continues to increase, the free end of the second movable spring piece 221 will apply abutment force to the armature part 330, and the abutment force will drive the armature part 330 to swing in the direction of contact disconnection, eventually causing the contacts of the relay to be disconnected instantly and the contacts to burst, causing the relay to fail.

[0056] From the above analysis, it can be seen that the first movable spring piece 211 and the second movable spring piece 221 attract each other and produce a large bending deformation, which will cause the contact to be disconnected instantly.

[0057] Based on this, Figure 2As shown, the relay of the embodiment of the present application also includes a stopper 600, which is connected to the inner wall surface of the second shell 120 and is arranged between the first movable spring part 210 and the second movable spring part 220, and is used to stop the first movable spring part 210 and the second movable spring part 220, so that the deflection of the bending deformation of the two movable spring parts caused by the mutual attraction due to the current passing through the parallel circuit structure is less than or equal to a threshold value.

[0058] The relay of the embodiment of the present application includes a stopper 600 disposed between two movable spring parts, and the stopper 600 is used to stop the two movable spring parts so that the deflection of the bending deformation caused by the mutual attraction of the two movable spring parts due to the current passing through the parallel circuit structure is less than or equal to a threshold value, so that the two movable spring parts are allowed to produce a small bending deformation due to the suction force, and the two movable spring parts are prevented from being excessively attracted and causing a large bending deformation. On the one hand, the stopper 600 ensures that the two movable spring parts can produce a small bending deformation, and can ensure that sufficient suction can be generated between the two movable spring parts to resist the electric repulsion caused by the short-circuit current between the contacts, and avoid the contacts being disconnected instantly and causing the relay to explode. On the other hand, the stopper 600 prevents the two movable spring parts from producing a large bending deformation, so as to prevent the movable spring parts from being excessively deformed and causing the contacts to be disconnected instantly, and at the same time avoid the problems of contact splashing and relay explosion.

[0059] When the bending deformation of the two movable spring parts is equal to the threshold, the two movable spring parts still keep in contact and form a parallel circuit structure. When the bending deformation of the two movable spring parts is greater than the threshold, the two movable spring parts are disconnected or form a series circuit structure.

[0060] Among them, when the two movable spring parts are disconnected, it means that the first contact group 200a and the second contact group 200b are both disconnected, that is, the first movable contact 222 is disconnected from the first static contact 212, and the second movable contact 213 is disconnected from the second static contact 223; when the two movable spring parts form a series circuit structure, it means that one of the first contact group 200a and the second contact group 200b is disconnected, that is, the first movable contact 222 is disconnected from the first static contact 212, and the second movable contact 213 is closed with the second static contact 223, or, the first movable contact 222 is closed with the first static contact 212, and the second movable contact 213 is disconnected from the second static contact 223.

[0061] It should be noted that the function of the stopper 600 is to prevent the first movable spring piece 211 and the second movable spring piece 221 from excessive bending and deformation, but it does not prohibit the first movable spring piece 211 and the second movable spring piece 221 from bending and deformation within a controllable range, that is, when the deflection of the bending deformation of the first movable spring piece 211 and the second movable spring piece 221 is less than or equal to a threshold value, it is allowed.

[0062] Next, combine Figure 3The bending deformation process of the first movable spring piece 211 and the second movable spring piece 221 is described in detail. When the first movable spring piece 211 and the second movable spring piece 221 are bent and deformed within a controllable range, for example, the first movable spring piece 211 is bent and deformed to the state A1, and the second movable spring piece 221 is bent and deformed to the state A2, since the deflection of the bending deformation of the first movable spring piece 211 and the second movable spring piece 221 is small and less than the threshold, it will not cause the contact to be disconnected instantaneously, and ensure that sufficient suction can be generated between the first movable spring piece 211 and the second movable spring piece 221 to resist the electric repulsion. Therefore, the deflection of the bending deformation of A1 and A2 is allowed.

[0063] When the first movable spring piece 211 and the second movable spring piece 221 are greatly bent and deformed, for example, the first movable spring piece 211 is bent and deformed to the state B1, and the second movable spring piece 221 is bent and deformed to the state B2, if the deflection of the bending deformation of the two movable spring pieces reaches the threshold at this time, since the deflection of the bending deformation of the first movable spring piece 211 and the second movable spring piece 221 is not greater than the threshold at this time, the two movable spring parts still maintain contact and form a parallel circuit structure, so the deflection of the bending deformation of B1 and B2 is allowed at this time.

[0064] Continue reading Figure 3 , there is no stopper between the first movable spring piece 211 and the second movable spring piece 221, and the first movable spring piece 211 and the second movable spring piece 221 are over-engaged, resulting in excessive warping of the middle part of the movable spring piece, and excessive tilting of the contact points at both ends, for example, the first movable spring piece 211 is bent and deformed to the state of C1, and the second movable spring piece 221 is bent and deformed to the state of C2. If the deflection of the bending deformation of the two movable spring pieces is greater than the threshold value at this time, the deflection of the bending deformation of C1 and C2 is prohibited.

[0065] In summary, when the deflection of the bending deformation of the first movable spring piece 211 and the second movable spring piece 221 is less than or equal to a threshold value (for example, the bending state of A1 and A2 or the bending state of B1 and B2), it is allowed; when the deflection of the bending deformation of the first movable spring piece 211 and the second movable spring piece 221 is greater than the threshold value (for example, the bending state of C1 and C2), it is prohibited.

[0066] It should be noted that the "threshold" here is the upper limit of the deflection, which is related to various factors, such as: the magnitude of the reaction force generated when the first movable spring piece 211 and the second movable spring piece 221 are bent and deformed, the magnitude of the suction force between the first movable spring piece 211 and the second movable spring piece 221, the elastic modulus of the materials of the first movable spring piece 211 and the second movable spring piece 221, the lengths of the first movable spring piece 211 and the second movable spring piece 221, the armature holding force, etc. Therefore, the magnitude of the "threshold" is not constant and should be specifically defined according to different relays.

[0067] like Figure 2As shown, the stopper 600 is located between the first movable reed 211 and the second movable reed 221 , and between the first contact group 200 a and the second contact group 200 b .

[0068] In one embodiment, the stopper 600 may be made of an elastic material and configured to deform when the two movable spring parts are bent and deformed to squeeze the stopper 600. When the deflection of the movable spring part is equal to the threshold, the suction force between the two movable spring parts is equal to the sum of the first elastic force generated by the deformation of the stopper 600 and the second elastic force generated by the deformation of the movable spring part. The elastic material may be rubber, plastic or other materials that can provide elastic force when deformed.

[0069] When the first movable spring piece 211 and the second movable spring piece 221 are attracted to each other by the suction force and press the stopper 600, since the stopper 600 is made of elastic material, the stopper 600 will be deformed and provide the first elastic force to the first movable spring piece 211 and the second movable spring piece 221 due to the deformation. Since the deformation amplitude of the stopper 600 is small in the initial stage of deformation, the first elastic force provided is also small.

[0070] From the perspective of resisting the electric repulsion, when the movable spring piece and the stopper 600 just come into contact, since the stopper 600 is made of elastic material, the first movable spring piece 211 and the second movable spring piece 221 can squeeze the stopper 600 when they are attracted to each other and bend and deform within a controllable range. It can be seen that the characteristic of the stopper 600 being deformed under pressure provides elastic deformation space for the first movable spring piece 211 and the second movable spring piece 221, so that within the range of deflection less than or equal to the threshold, the first movable spring piece 211 and the second movable spring piece 221 can bend and deform to meet the requirement of the amount of elastic deformation required to resist the electric repulsion.

[0071] From the perspective of avoiding instantaneous disconnection of the contact, when a large current flows between the first movable spring piece 211 and the second movable spring piece 221, the first movable spring piece 211 and the second movable spring piece 221 have a tendency to bend and deform greatly due to the large suction force between the first movable spring piece 211 and the second movable spring piece 221. As the first movable spring piece 211 and the second movable spring piece 221 gradually squeeze the stopper 600, the deformation of the stopper 600 becomes larger and larger, until the sum of the first elastic force generated by the deformation of the stopper 600 and the second elastic force generated by the deformation of the movable spring piece is equal to the suction force, and the first movable spring piece 211 and the second movable spring piece 221 will not continue to bend and deform. At this time, the stopper 600 plays a role in preventing the first movable spring piece 211 and the second movable spring piece 221 from excessive bending and deformation.

[0072] like Figure 4As shown, the stopper 600 is connected to the inner wall surface of the second shell 120 . Furthermore, the stopper 600 and the second shell 120 are an integral structure.

[0073] like Figure 5 As shown, the stopper 600 is connected to the inner wall surface of the first shell 110 . Furthermore, the stopper 600 and the first shell 110 are an integral structure.

[0074] like Figure 4 As shown, the stopper 600 includes a middle portion 610, two first stop portions 620 and two second stop portions 630, and the middle portion 610 is provided with a first stop portion 620 and a second stop portion 630 at both ends along the length direction of the contact component 200; along the thickness direction of the contact component 200, the two first stop portions 620 are arranged at intervals, and the two second stop portions 630 are arranged at intervals.

[0075] When the first movable spring piece 211 and the second movable spring piece 221 are bent and deformed, the first movable spring piece 211 squeezes one of the first stop parts 620 and one of the second stop parts 630 at the same time, and the second movable spring piece 221 squeezes the other first stop part 620 and the other second stop part 630 at the same time, so that the two first stop parts 620 are close to each other, and the two second stop parts 630 are close to each other.

[0076] like Figure 6 As shown, the stopper 600 may also be a hollow cylindrical structure, one end of which is connected to the inner wall surface of the second shell 120 .

[0077] In the embodiment of the present application, since the stopper 600 is a hollow cylindrical structure, when the first movable spring piece 211 and the second movable spring piece 221 squeeze the two sides of the cylindrical structure, the cylindrical structure can produce a slight deformation to prevent the first movable spring piece 211 and the second movable spring piece 221 from excessive bending deformation.

[0078] It should be noted that the cross-sectional shape of the cylindrical structure may be a circular ring, an elliptical ring, or other shapes that can be deformed under pressure and provide elastic force.

[0079] Of course, in other embodiments, one end of the cylindrical structure may also be connected to the inner wall surface of the first shell 110 .

[0080] In one embodiment, the stopper 600 and the housing 100 may also be separate structures. For example, the stopper 600 is installed on the second housing 120 , or the stopper 600 is installed on the first housing 110 .

[0081] like Figure 7As shown, the inner wall surface of the second shell 120 is provided with a slot 121, and the stopper 600 is inserted into the slot 121. Of course, in other embodiments, the stopper 600 can also be connected to the housing 100 by means of clamping, gluing, riveting, welding, etc., which are not listed here one by one.

[0082] like Figure 8 As shown, the stopper 600 includes a connecting portion 640 and an elastic portion 650. The connecting portion 640 is connected to the housing 100, for example, the connecting portion 640 is inserted into the slot 121 of the second housing 120. The elastic portion 650 is connected to the connecting portion 640 and has a wavy structure. The elastic portion 650 includes a plurality of wave crest sections 651 and a plurality of wave trough sections 652, and the wave crest sections 651 and the wave trough sections 652 are alternately arranged along the length direction of the contact assembly 200.

[0083] When the first movable spring piece 211 and the second movable spring piece 221 are bent and deformed, the first movable spring piece 211 squeezes a plurality of wave crest sections 651 , and the second movable spring piece 221 squeezes a plurality of wave trough sections 652 .

[0084] It should be supplemented that the stopper 600 is not limited to being made of elastic material. For example, the stopper 600 can also be made of rigid material.

[0085] When the stopper 600 is made of a rigid material, when the deflection of the bending deformation of the first movable spring piece 211 and the second movable spring piece 221 is less than a threshold value or no bending deformation occurs, there is a gap between the stopper 600 and the first movable spring piece 211 and the second movable spring piece 221. When the deflection of the bending deformation of the movable spring part is equal to the threshold value, the stopper 600 abuts against the first movable spring piece 211 and the second movable spring piece 221, respectively.

[0086] In the embodiment of the present application, the gap can provide a certain deformation space for the first movable spring piece 211 and the second movable spring piece 221, so that the first movable spring piece 211 and the second movable spring piece 221 can be bent and deformed within a controllable range when they attract each other. When the deflection of the bending deformation of the first movable spring piece 211 and the second movable spring piece 221 reaches a threshold value, the stopper 600 abuts against the first movable spring piece 211 and the second movable spring piece 221 respectively to prevent the first movable spring piece 211 and the second movable spring piece 221 from excessive bending and deformation.

[0087] In summary, the relay of the embodiment of the present application has at least the following advantages and beneficial effects:

[0088] The relay of the embodiment of the present application includes a stopper 600 disposed between two movable spring parts, and the stopper 600 is used to stop the two movable spring parts so that the deflection of the bending deformation caused by the mutual attraction of the two movable spring parts due to the current passing through the parallel circuit structure is less than or equal to a threshold value, which allows the two movable spring parts to produce a small bending deformation due to the suction force, and prevents the two movable spring parts from being over-attracted and producing a large bending deformation. On the one hand, the stopper 600 ensures that the two movable spring parts can produce a small bending deformation, and can ensure that sufficient suction can be generated between the two movable spring parts to resist the electric repulsion caused by the short-circuit current between the contacts, and avoid the contacts being disconnected instantly and causing the relay to explode. On the other hand, the stopper 600 prevents the two movable spring parts from producing a large bending deformation, so as to prevent the movable spring parts from being over-deformed and causing the contacts to be disconnected instantly, and at the same time avoid the problems of contact splashing and relay explosion.

[0089] It is understandable that the various embodiments / implementations provided in the present application can be combined with each other without causing any contradiction, and will not be illustrated one by one here.

[0090] In the application embodiments, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the application embodiments can be understood according to the specific circumstances.

[0091] In the description of the application embodiments, it should be understood that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the application embodiments and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the application embodiments.

[0092] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the application embodiment. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0093] The above are only preferred embodiments of the application embodiments and are not intended to limit the application embodiments. For those skilled in the art, the application embodiments may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application embodiments shall be included in the protection scope of the application embodiments.

Claims

1. A relay, characterized in that: include: A contact assembly, comprising two movable spring parts arranged side by side, wherein the two movable spring parts form a parallel circuit structure when in contact with each other; as well as The stopper is arranged between the two movable spring parts and is used to stop the two movable spring parts so that the deflection of the two movable spring parts generated by bending deformation after being attracted to each other due to current passing through the parallel circuit structure is less than or equal to a threshold value.

2. The relay according to claim 1, characterized in that: The stopper is made of an elastic material and is configured so that when the two movable spring parts are bent and deformed to press the stopper, the stopper can be deformed; When the deflection of the bending deformation of the movable spring part is equal to the threshold, the suction force between the two movable spring parts is equal to the sum of the first elastic force generated by the deformation of the stopper and the second elastic force generated by the deformation of the movable spring part.

3. The relay according to claim 1, characterized in that: The two movable spring parts are respectively a first movable spring part and a second movable spring part, the first movable spring part comprises a first movable spring piece, a first static contact and a second movable contact, the first static contact and the second movable contact are respectively arranged at two ends of the length direction of the first movable spring piece; the second movable spring part comprises a second movable spring piece, a first movable contact and a second static contact, the first movable contact and the second static contact are respectively arranged at two ends of the length direction of the second movable spring piece, the first movable contact is used to contact or separate with the first static contact, and constitutes a first contact group, the second movable contact is used to contact or separate with the second static contact, and constitutes a second contact group; Wherein, the stopper is located between the first movable spring piece and the second movable spring piece, and between the first contact point group and the second contact point group.

4. The relay according to any one of claims 1 to 3, characterized in that: The relay further comprises a housing, the contact assembly and the stopper are located in the housing, and the stopper is connected to the housing.

5. The relay according to claim 4, characterized in that: The stopper and the housing are an integral structure.

6. The relay according to claim 5, characterized in that: The housing comprises a first shell and a second shell that are buckled together, and the stopper is integrally formed on the inner wall surface of the first shell or the inner wall surface of the second shell.

7. The relay according to claim 5, characterized in that: The stopper comprises a middle portion, two first stoppers and two second stoppers, and the first stoppers and the second stoppers are respectively disposed at two ends of the middle portion along the length direction of the contact assembly; Along the thickness direction of the contact component, the two first stop portions are arranged at intervals, and the two second stop portions are arranged at intervals.

8. The relay according to claim 5, characterized in that: The stopper is a hollow cylindrical structure, and one end of the cylindrical structure is connected to the shell.

9. The relay according to claim 4, characterized in that: The stopper and the housing are separate structures.

10. The relay according to claim 9, characterized in that: The inner wall surface of the shell is provided with a slot, and the stopper is inserted into the slot.

11. The relay according to claim 9, characterized in that: The stopper comprises a connecting portion and an elastic portion, wherein the connecting portion is connected to the housing, and the elastic portion is connected to the connecting portion and has a wave-shaped structure; The elastic portion includes a plurality of peak sections and a plurality of trough sections, and the peak sections and the trough sections are alternately arranged along a length direction of the contact component.

12. The relay according to claim 1, characterized in that: The stopper is made of a rigid material; When the bending deformation of the movable spring part is less than the threshold or no bending deformation occurs, there is a gap between the stopper and the movable spring part; when the bending deformation of the movable spring part is equal to the threshold, the stopper abuts against the movable spring part.

13. The relay according to claim 1, characterized in that: When the deflection of the bending deformation of the two movable spring parts is equal to the threshold value, the two movable spring parts still maintain contact and form the parallel circuit structure.

14. The relay according to claim 1, characterized in that: When the deflection of the bending deformation of the two movable spring parts is greater than the threshold value, the two movable spring parts are disconnected or form a series circuit structure.

Images