Auxiliary contact structure and relay

Abstract

The utility model discloses an auxiliary contact structure and a relay, the auxiliary contact structure comprises a mounting rack, an auxiliary contact assembly and a contact finger, the mounting rack is provided with a circuit board, the auxiliary contact assembly is arranged on the circuit board, the auxiliary contact assembly forms a slot, and the contact finger is plugged in the slot. The utility model aims to improve the reliability of connection and use by reducing welding points and simplifying the structure of the auxiliary contact.

Description

Technical Field

[0001] The utility model relates to the technical field of relay equipment, in particular to an auxiliary contact structure and a relay. Background Art

[0002] Control electrical appliances such as contactors and relays usually carry one or more sets of auxiliary contacts to monitor the opening and closing status of the main contacts of the product. The auxiliary contacts are led out in the form of lead wires, connectors, lead terminals, etc. to connect to an external power supply.

[0003] At present, the auxiliary contact lead-out method is more commonly used and relatively reliable to directly weld the wire lead-out, but the use of welded lead-out wires will cause the wires to be crushed or broken during installation and transportation, and welding may also result in cold soldering, which will cause damage to the relay. Rubber-coated parts are also used at the connection points. The use of rubber-coated parts will inevitably have more corners and require more welding points, thereby increasing the risk of failure. Utility Model Content

[0004] The main purpose of the utility model is to provide an auxiliary contact structure and a relay, aiming to reduce welding points, simplify the structure of the auxiliary contact, and improve the reliability of connection and use.

[0005] In order to achieve the above object, the utility model proposes an auxiliary contact structure, which includes:

[0006] A mounting frame, wherein the mounting frame is provided with a circuit board;

[0007] an auxiliary contact assembly, the auxiliary contact assembly being disposed on the circuit board, the auxiliary contact assembly being formed with a slot; and

[0008] A contact finger assembly is inserted into the slot.

[0009] In one embodiment, the auxiliary contact assembly includes two auxiliary static contact modules, each of the auxiliary static contact modules includes an auxiliary static contact and an adapter, the auxiliary static contact is arranged on the mounting frame and electrically connected to the adapter, the adapter is arranged on the circuit board, and the adapter forms the slot;

[0010] The contact finger assembly includes two contact fingers, and each of the contact fingers is plugged into one of the slots.

[0011] In one embodiment, the circuit board is provided with a plug hole, and the adapter includes at least two adapter plates, at least two of the adapter plates are enclosed to form the slot, one end of each of the adapter plates is fixed to the edge of the plug hole, and the other end of each of the adapter plates extends into the plug hole and extends away from the circuit board.

[0012] In one embodiment, the circuit board is further provided with at least two first limiting holes, and the at least two first limiting holes are evenly distributed around the plug hole at the periphery of the plug hole;

[0013] The adapter plate is provided with a positioning portion, and each of the positioning portions can extend into one of the first limiting holes to limit the adapter plate.

[0014] In one embodiment, the adapter sheet further comprises:

[0015] A supporting portion, the supporting portion being connected to the positioning portion, the supporting portion being located between the first limiting hole and the plug-in hole and abutting against the circuit board; and

[0016] An elastic part is connected to the supporting part, and one end of the elastic part away from the supporting part extends into the plug hole and extends in a direction away from the supporting part.

[0017] In one embodiment, the extension direction of the elastic portion is arranged at an angle to the axial direction of the plug hole, and the elastic portion starts from the support portion and gradually extends toward the axial direction of the plug hole;

[0018] Or, the elastic portion includes a first portion and a second portion, the extension direction of the first portion is parallel to the axial direction of the plug hole, the extension direction of the second portion is arranged at an angle to the axial direction of the plug hole, and the second portion gradually extends toward the axial direction of the plug hole;

[0019] In one embodiment, the elastic portion is provided with a force unloading groove, and the force unloading groove is extended along the extension direction of the elastic portion;

[0020] And / or, a hole wall of the plug hole is provided with a limiting groove, and part of the supporting portion is limitedly disposed in the limiting groove.

[0021] In one embodiment, the auxiliary static contact comprises:

[0022] A bottom film, the bottom film being limitedly arranged on the mounting frame; and

[0023] Two vertical pieces, the two vertical pieces are connected to the bottom piece, the two vertical pieces extend away from the bottom piece toward the circuit board, and the two vertical pieces are electrically connected to the adapter.

[0024] In one embodiment, the circuit board is provided with two second limiting holes, and a limiting column is provided at one end of each of the vertical sheets away from the bottom sheet, and the limiting column is limitedly arranged in the second limiting hole;

[0025] And / or, the mounting frame is provided with a positioning convex bump, the bottom plate is provided with a positioning hole corresponding to the positioning convex bump, and the positioning convex bump extends into the positioning hole to limit the auxiliary static contact.

[0026] In one embodiment, the auxiliary contact assembly includes an auxiliary moving contact module and two auxiliary stationary contact modules, and one end of the auxiliary moving contact module is fixedly arranged on the circuit board;

[0027] Among them, the auxiliary contact structure has a conducting state and a separating state. In the conducting state, the other end of the auxiliary moving contact module is used to abut against the two auxiliary static contact modules to conduct the two auxiliary static contact modules. In the separating state, the other end of the auxiliary moving contact module is separated from the two auxiliary static contact modules.

[0028] In one embodiment, the auxiliary moving contact module includes:

[0029] an auxiliary moving contact, one end of which is fixedly connected to the circuit board, and the other end of which extends toward the auxiliary static contact module and is arranged opposite to the auxiliary static contact; and

[0030] An elastic member, one end of which is connected to the mounting frame, and the other end of which is connected to the auxiliary moving contact;

[0031] Wherein, in the conducting state, the auxiliary moving contact presses the elastic member to abut against the two auxiliary static contact modules.

[0032] In one embodiment, the auxiliary moving contact is provided with a bending portion, the bending portion protrudes toward the direction of the auxiliary static contact module, and the bending portion is located at the movable end of the auxiliary moving contact;

[0033] And / or, the auxiliary moving contact is provided with a plurality of process holes.

[0034] The utility model also provides a relay, the relay comprising:

[0035] Main contacts; and

[0036] As in the auxiliary contact structure described above, the main contact is connected to a mounting frame of the auxiliary contact structure.

[0037] The auxiliary contact structure of the technical solution of the utility model includes a mounting frame, an auxiliary contact assembly and a contact finger assembly. The mounting frame is provided with a circuit board, the auxiliary contact assembly is arranged on the circuit board, the auxiliary contact assembly is formed with a slot, and the contact finger assembly is plugged into the slot. By plugging and matching the contact finger assembly used for connecting to an external circuit with the slot, the electrical connection between the auxiliary contact assembly and the contact finger assembly is achieved, and the contact lead-out structure in the auxiliary contact assembly is made simpler, reducing the risk of failure caused by too many welding points, and effectively improving the reliability of connection and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0039] Figure 1 This is a structural schematic diagram of an auxiliary contact structure in an embodiment of the utility model;

[0040] Figure 2 This is a structural schematic diagram of an auxiliary contact structure from another perspective in one embodiment of the utility model;

[0041] Figure 3 It is a partial structural diagram of the auxiliary contact structure in another perspective in one embodiment of the utility model;

[0042] Figure 4 This is a structural schematic diagram of a mounting frame in one embodiment of the utility model;

[0043] Figure 5 This is a schematic diagram of the structure of a circuit board in one embodiment of the utility model;

[0044] Figure 6 This is a schematic diagram of the structure of the adapter in one embodiment of the utility model;

[0045] Figure 7 This is a structural schematic diagram of an auxiliary static contact in an embodiment of the utility model;

[0046] Figure 8 It is a structural schematic diagram of the auxiliary moving contact in one embodiment of the utility model.

[0047] Description of Figure Numbers:

[0048]

[0049]

[0050] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0052] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0053] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or a option in which both A and B are satisfied.

[0054] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0055] Please refer to Figures 1 to 8 As shown, the utility model proposes an auxiliary contact structure 100, which includes a mounting frame 1, an auxiliary contact assembly 2 and a contact finger assembly 3. The mounting frame 1 is provided with a circuit board 13, the auxiliary contact assembly 2 is arranged on the circuit board 13, the auxiliary contact assembly 2 is formed with a slot 2122, and the contact finger assembly 3 is inserted into the slot 2122.

[0056] In this embodiment, the auxiliary contact structure 100 is applied to the relay. The relay generally includes a group of main contact structures and at least one group of auxiliary contact structures 100. The auxiliary contact structure 100 is mechanically connected to the main contact structure, so that under normal working conditions, after the main contact structure is closed, it will drive the auxiliary contact structure 100 to close as well, so that the closing status of the main contact structure can be detected by the auxiliary contact structure 100.

[0057] In this embodiment, the mounting frame 1 is a structural support part 2121b of the auxiliary contact structure 100. The mounting frame 1 is used to install part of the main contact structure on the one hand, and to install the auxiliary contact assembly 2 on the other hand. The mounting frame 1 includes a barrel frame 11 and a mounting plate 12. A coil is wound on the barrel frame 11 to form a magnetic field. The mounting plate 12 is arranged at one end of the barrel frame 11. The mounting plate 12 is formed with a mounting plane 121. The circuit board 13 is arranged on the mounting plate 12. The circuit board 13 is arranged opposite to the mounting plane 121, and the extension plane of the circuit board 13 It is arranged parallel to the mounting plane 121, so that a mounting space 1a is enclosed between the circuit board 13 and the mounting plate 12, the auxiliary contact assembly 2 is arranged in the mounting space 1a, the cylinder frame 11 is formed with a hollow through hole, the mounting plate 12 is formed with a first mounting hole connecting the through hole and the mounting space 1a, the circuit board 13 is formed with a second mounting hole 131 connecting the through hole and the mounting space 1a, and part of the main contact structure can extend into the through hole and pass through the first mounting hole and the second mounting hole 131 to be connected to the auxiliary contact assembly 2 arranged in the mounting space 1a.

[0058] It can be understood that by setting up the mounting frame 1, a coil can be wound to form a magnetic field to cooperate with the main contact structure to realize circuit switching. At the same time, the mounting space 1a formed between the mounting plate 12 and the circuit board 13 can also provide a mounting area for the auxiliary contact assembly 2, thereby improving the compactness of the structure of the relay.

[0059] In this embodiment, if Figure 3 As shown, the auxiliary contact assembly 2 is formed with a slot 2122, so that the contact finger assembly 3 can be inserted into the slot 2122. It can be understood that the contact finger assembly 3 is used to connect the auxiliary contact assembly 2 and the external circuit. The contact finger assembly 3 is usually a metal pin. In the traditional structure, the contact finger assembly 3 and the auxiliary contact assembly 2 are connected by welding, so that the auxiliary contact assembly 2 is led to the outside. However, there are too many welding points, which may easily cause the relay to fail due to cold welding and desoldering, and the welding points may also be broken due to compression and pulling during installation and transportation, so it has considerable limitations.

[0060] In the present application, the contact finger assembly 3 is inserted into the slot 2122 to realize the connection between the contact finger assembly 3 and the auxiliary contact assembly 2, and the side wall of the slot 2122 has a certain elasticity, such as the auxiliary contact assembly 2 forming the slot 2122 is set as an elastic metal part, so that the contact finger assembly 3 can be tightly connected with the side wall of the slot 2122 after being inserted into the slot 2122, so as to ensure the stability of the connection between the contact finger assembly 3 and the auxiliary contact assembly 2, and make the connection structure between the contact finger assembly 3 and the auxiliary contact assembly 2 simpler, and make the lead-out structure of the auxiliary contact assembly 2 simpler.

[0061] The auxiliary contact structure 100 of the present technical solution includes a mounting frame 1, an auxiliary contact assembly 2 and a contact finger assembly 3. The mounting frame 1 is provided with a circuit board 13. The auxiliary contact assembly 2 is arranged on the circuit board 13. The auxiliary contact assembly 2 is formed with a slot 2122. The contact finger assembly 3 is plugged into the slot 2122. By plugging and matching the contact finger assembly 3 used for connecting to an external circuit with the slot 2122, the electrical connection between the auxiliary contact assembly 2 and the contact finger assembly 3 is achieved, and the contact lead-out structure in the auxiliary contact assembly 2 is made simpler, reducing the risk of failure caused by too many welding points, and effectively improving the reliability of connection and use.

[0062] In one embodiment, the auxiliary contact assembly 2 includes two auxiliary static contact modules 21, each auxiliary static contact module 21 includes an auxiliary static contact 211 and an adapter 212, the auxiliary static contact 211 is arranged on the mounting frame 1, and is electrically connected to the adapter 212, the adapter 212 is arranged on the circuit board 13, and the adapter 212 forms a slot 2122; the contact finger assembly 3 includes two contact fingers 31, each contact finger 31 is inserted into a slot 2122.

[0063] In this embodiment, if Figures 1 to 3 as well as Figure 7 As shown, the auxiliary contact assembly 2 includes two auxiliary static contact modules 21, and the two auxiliary static contact modules 21 are arranged on the circuit board 13 at intervals, and each auxiliary static contact module 21 includes an auxiliary static contact 211 and an adapter 212, the auxiliary static contact 211 is arranged on the mounting plane 121 of the mounting plate 12, and the adapter 212 is arranged on the circuit board 13, so that one end of the auxiliary static contact 211 extends toward the circuit board 13 and is electrically connected to the adapter 212, and the adapter 212 is formed with a slot 2122, and the two slots 2122 are arranged at intervals, so that each of the two contact fingers 31 can be plugged into one slot 2122.

[0064] It can be understood that the auxiliary contact structure 100 includes two auxiliary static contact modules 21 and one auxiliary moving contact module 22. The auxiliary moving contact module 22 is arranged on the circuit board 13. The auxiliary moving contact module 22 is mechanically connected to the main contact structure. When the main contact structure is closed under the action of electromagnetic force, it can drive the auxiliary moving contact module 22 to move. At this time, the auxiliary moving contact module 22 will abut against the two auxiliary static contact modules 21 at the same time, so that the two contact fingers 31 inserted on the two auxiliary static contact modules 21 can be turned on.

[0065] Furthermore, the auxiliary moving contact module 22 will abut against the two auxiliary static contacts 211, and the two auxiliary static contacts 211 are respectively connected to the two adapters 212 and transmit current. A contact finger 31 is inserted on each adapter 212. When the auxiliary moving contact module 22 and the two auxiliary static contacts 211 abut against each other, the two contact fingers 31 are turned on, so that the external circuit is connected, so that the relay is closed normally, and the normal operation of the external circuit is ensured.

[0066] In one embodiment, the circuit board 13 is provided with a plug hole 132, and the adapter 212 includes at least two adapter plates 2121, and the at least two adapter plates 2121 are enclosed to form a slot 2122, one end of each adapter plate 2121 is fixed to the edge of the plug hole 132, and the other end of each adapter plate 2121 extends into the plug hole 132 and extends in a direction away from the circuit board 13.

[0067] In this embodiment, if Figures 1 to 5 as well as Figure 6 As shown, a plug hole 132 is opened on the circuit board 13, and the plug hole 132 is connected with the above-mentioned installation space 1a, so that the adapter 212 can be extended into the plug hole 132, and the adapter 212 includes at least two adapter plates 2121, and one end of each adapter plate 2121 is fixed on the circuit board 13 and located at the edge of the plug hole 132, and the other end of each adapter plate 2121 extends into the plug hole 132 and the installation space 1a, extending in the direction away from the circuit board 13, so that at least two adapter plates 2121 enclose a slot 2122, and the axis of the slot 2122 coincides with the axis of the plug hole 132.

[0068] It can be understood that the provision of the adapter sheet 2121 can make the slot 2122 formed by the adapter 212 a petal-type structure, so that the slot 2122 has a certain expansion or contraction space, that is, when the contact finger 31 is inserted into the slot 2122, at least two adapter sheets 2121 can, on the basis of abutting against the contact finger 31, also tightly wrap the contact finger 31 through the elasticity of the material of the adapter sheet 2121 itself, thereby effectively improving the plug-in firmness of the contact finger 31 and the adapter 212, and improving the reliability of the connection between the contact finger 31 and the auxiliary static contact module 21. At the same time, the provision of at least two adapter sheets 2121 can also make the slot 2122 adapt to contact fingers 31 of different sizes, thereby improving the versatility and adaptability of the auxiliary contact structure 100.

[0069] In one embodiment, the circuit board 13 is further provided with at least two first limiting holes 133, and the at least two first limiting holes 133 are evenly distributed around the plug hole 132 at the periphery of the plug hole 132; the adapter plate 2121 is provided with a positioning portion 2121a, and each positioning portion 2121a can extend into a first limiting hole 133 to limit the adapter plate 2121.

[0070] In this embodiment, if Figures 3 to 6 As shown, the first limiting hole 133 is located at the periphery of the plug-in hole 132, and the first limiting hole 133 can be connected to the installation space 1a. At least two first limiting holes 133 are evenly arranged around the plug-in hole 132, that is, at least two plug-in holes 132 are distributed on the periphery of the plug-in hole 132 in a manner of evenly dividing the circumference. If two adapter plates 2121 are provided, the two first limiting holes 133 are relatively arranged along a straight line passing through the axis of the plug-in hole 132, and the adapter plate 2121 is provided with a positioning portion 2121a corresponding to the first limiting hole 133, and the positioning portion 2121a can extend into the first limiting hole 133.

[0071] It can be understood that an abutment platform is formed between the first limiting hole 133 and the plug-in hole 132, so that when the positioning portion 2121a is inserted into the first limiting hole 133, part of the structure of the adapter plate 2121 can be placed on the abutment platform to achieve positioning and fixation of the adapter plate 2121. At the same time, one end of the adapter plate 2121 away from the positioning portion 2121a extends into the plug-in hole 132 and the installation space 1a to form a slot 2122. By setting the first limiting hole 133, not only the installation of the adapter plate 2121 is simplified, but also the adapter plate 2121 can be effectively positioned and limited, so that the installation of the adapter plate 2121 and the circuit board 13 is more reliable and tight.

[0072] In one embodiment, the adapter 2121 is also provided with a supporting portion 2121b and an elastic portion 2121c, the supporting portion 2121b is connected to the positioning portion 2121a, the supporting portion 2121b is located between the first limiting hole 133 and the plug-in hole 132, and abuts against the circuit board 13, the elastic portion 2121c is connected to the supporting portion 2121b, and one end of the elastic portion 2121c away from the supporting portion 2121b extends into the plug-in hole 132 and extends in a direction away from the supporting portion 2121b.

[0073] In this embodiment, if Figures 3 to 6 As shown, the adapter plate 2121 includes the above-mentioned positioning portion 2121a, the supporting portion 2121b and the elastic portion 2121c, the positioning portion 2121a and the elastic portion 2121c are both connected to the supporting portion 2121b, the supporting portion 2121b is the main supporting structure of the adapter plate 2121, when the positioning portion 2121a is inserted into the first limiting hole 133, the supporting portion 2121b abuts against the abutment platform, and the elastic portion 2121c connected to the supporting portion 2121b extends into the plug-in hole 132, the end of the elastic portion 2121c away from the supporting portion 2121b extends toward the plug-in hole 132 and the installation space 1a, and gradually extends toward the axial direction of the plug-in hole 132, so that the elastic portions 2121c of at least two adapter plates 2121 are close to each other at the end away from the supporting portion 2121b to enclose and form a slot 2122.

[0074] It can be understood that the support portion 2121b is used to install the positioning portion 2121a and the elastic portion 2121c. When the support portion 2121b abuts against the abutment platform, the positioning portion 2121a can be ensured to be tightly fitted and plugged into the first limiting hole 133 to ensure the fixation of the entire adapter 2121 and the circuit board 13. At the same time, the elastic portion 2121c can be arranged in the plug-in hole 132 to enclose and form a slot 2122, wherein the elastic portion 2121c extends in the axial direction of the plug-in hole 132, so that the ends of at least two elastic portions 2121c are gathered together to facilitate the insertion of the contact finger 31, and through the elasticity of the metal material of the elastic portion 2121c itself, the contact finger 31 can be tightly wrapped and abutted after the contact finger 31 is inserted, thereby effectively improving the plug-in firmness and reliability of the contact finger 31 and the adapter 212.

[0075] In one embodiment, the extension direction of the elastic portion 2121c is set at an angle to the axial direction of the plug hole 132, and the elastic portion 2121c starts from the support portion 2121b and gradually extends toward the axial direction of the plug hole 132; or, the elastic portion 2121c includes a first part and a second part, the extension direction of the first part is parallel to the axial direction of the plug hole 132, the extension direction of the second part is set at an angle to the axial direction of the plug hole 132, and the second part gradually extends toward the axial direction of the plug hole 132.

[0076] It is understandable that if Figure 6 As shown, the extension direction of all or part of the elastic portion 2121c is set at an angle to the axial direction of the plug-in hole 132. For example, the elastic portion 2121c extends from the support portion 2121b and transitions to the axial direction of the plug-in hole 132, so that the ends of the elastic portions 2121c of at least two adapter plates 2121 away from the support portion 2121b gradually approach and shrink together, so that the slot 2122 is set to gradually shrink. When the contact finger 31 is inserted into the slot 2122, the end of the elastic portion 2121c away from the support portion 2121b can tightly wrap the contact finger 31 by shrinking, so as to improve the connection firmness and reliability between the contact finger 31 and the adapter 212. Furthermore, the elastic portion 2121c may also include a first part and a second part, the extension direction of the first part is parallel to the axial direction of the plug hole 132, and the second part gradually extends toward the axial direction of the plug hole 132. In this way, the elastic force of the elastic portion 2121c can be further improved through the first part, the overall fatigue strength of the elastic portion 2121c can be improved, the pressing force of the second part on the contact finger 31 can be enhanced, and the connection reliability between the contact finger 31 and the adapter 212 can be improved.

[0077] In one embodiment, the elastic portion 2121c is provided with a force unloading groove 2121d, and the force unloading groove 2121d is extended along the extension direction of the elastic portion 2121c; it can be understood that, if Figure 6As shown, the unloading groove 2121d is set through the elastic part 2121c, and the extension direction of the unloading groove 2121d is the same as that of the elastic part 2121c. The unloading groove 2121d is opened at the end of the elastic part 2121c away from the supporting part 2121b, so that the elastic part 2121c is divided into two parallel elastic strips 2121e. Such a setting can increase the elastic force of the elastic part 2121c of the adapter plate 2121, improve the fatigue strength of the elastic part 2121c, and make the plug-in fit between the contact finger 31 and the adapter plate 2121 tighter.

[0078] Optionally, a limiting groove 1321 is provided on the wall of the plug hole 132, and part of the support portion 2121b is limitedly disposed in the limiting groove 1321. It can be understood that if Figure 5 As shown, the limiting groove 1321 is connected with the plug hole 132, and the support portion 2121b includes two parts perpendicular to each other, one part abuts against the abutment platform, and the other part is limited in the limiting groove 1321 and abuts against the side wall of the limiting groove 1321 to limit and fix the support portion 2121b. Combined with the first limiting hole 133, it can effectively improve the connection firmness between the circuit board 13 and the adapter plate 2121, thereby improving the connection reliability between the contact finger 31 and the adapter 212.

[0079] In one embodiment, the auxiliary static contact 211 includes a bottom film 2111 and two vertical films 2112. The bottom film 2111 is limited on the mounting frame 1. The two vertical films 2112 are connected to the bottom film 2111. The two vertical films 2112 extend away from the bottom film 2111 toward the circuit board 13. The two vertical films 2112 are electrically connected to the adapter 212.

[0080] In this embodiment, if Figure 7 As shown, the auxiliary static contact 211 is arranged in the installation space 1a, the bottom film 2111 is limited on the installation plane 121 of the mounting frame 1, the two vertical pieces 2112 are connected to the bottom film 2111, and extend from the bottom film 2111 toward the direction of the circuit board 13, and the two vertical pieces 2112 are electrically connected to the adapter 212, and a contact area is also provided on the bottom film 2111, and the contact area is arranged in a plane.

[0081] It can be understood that, on the one hand, the bottom sheet 2111 is fixedly arranged on the mounting plane 121 to fix the two vertical sheets 2112, and on the other hand, through the extension of the vertical sheets 2112, a movable space is left between the auxiliary moving contact module 22 and the bottom sheet 2111, so that the auxiliary moving contact module 22 can move toward the bottom sheet 2111 and abut against the bottom sheet 2111. The vertical sheets 2112 are used to electrically connect the bottom sheet 2111 and the adapter 212. Specifically, the bottom sheet 2111 11 abuts against the auxiliary moving contact module 22 through the contact area. Further, when the auxiliary contact structure 100 is turned on, the auxiliary moving contact module 22 approaches the bottom film 2111 and finally abuts against two spaced bottom films 2111. Further, the bottom film 2111 is connected to the adapter 212 through the vertical film 2112 and finally electrically connected to the external circuit through the contact finger 31, so that the external circuit is turned on, thereby completing the closure of the auxiliary contact.

[0082] In one embodiment, the circuit board 13 has two second limiting holes 134, and each vertical piece 2112 is provided with a limiting post 2112a at one end away from the bottom piece 2111, and the limiting post 2112a is limited in the second limiting hole 134; it can be understood that if Figure 4 and Figure 5 As shown, the limiting column 2112a can be inserted into the second limiting hole 134 so that the two second limiting holes 134 can limit the installation of the two vertical plates 2112, thereby fixing the auxiliary static contact 211, ensuring the reliability of the electrical connection between the auxiliary static contact 211 and the adapter 212, and avoiding connection failure due to the movement of the auxiliary static contact 211.

[0083] Optionally, the mounting frame 1 is provided with a positioning convex bump 122, and the bottom plate 2111 is provided with a positioning hole 2111a corresponding to the positioning convex bump 122, and the positioning convex bump 122 extends into the positioning hole 2111a to limit the auxiliary static contact 211. It can be understood that the mounting frame 1 is provided with a positioning convex bump 122 on the mounting plane 121, and the bottom plate 2111 is provided with a positioning hole 2111a corresponding to the positioning convex bump 122, so that the positioning convex bump 122 extends into the positioning hole 2111a, and the bottom plate 2111 is limited and positioned, thereby achieving the positioning and limiting of the auxiliary static contact 211, ensuring the reliability of the electrical connection between the auxiliary static contact 211 and the adapter 212, and the connection reliability between the auxiliary static contact 211 and the auxiliary moving contact module 22 in the conductive state.

[0084] In one embodiment, the auxiliary contact assembly 2 includes an auxiliary moving contact module 22 and two auxiliary static contact modules 21, and one end of the auxiliary moving contact module 22 is fixed to the circuit board 13; wherein, the auxiliary contact structure 100 has a conducting state and a separating state, in which, in the conducting state, the other end of the auxiliary moving contact module 22 is used to abut against the two auxiliary static contact modules 21 to conduct the two auxiliary static contact modules 21, and in the separating state, the other end of the auxiliary moving contact module 22 is separated from the two auxiliary static contact modules 21.

[0085] In this embodiment, if Figures 1 to 3 As shown, one end of the auxiliary moving contact module 22 is fixed on the circuit board 13, and the other end of the auxiliary moving contact module 22 extends toward the auxiliary static contact 211 and is spaced relative to the bottom film 2111. The end of the auxiliary moving contact module 22 that is relatively arranged with the auxiliary static contact 211 can approach or move away from the bottom film 2111, and abuts against the bottom film 2111 in the conductive state.

[0086] It can be understood that the auxiliary moving contact module 22 can be elastically connected to the circuit board 13 and / or the mounting plate 12, so that in the separated state, the auxiliary moving contact module 22 is separated from the bottom film 2111, and in the conductive state, the auxiliary moving contact module 22 can overcome the elastic force, approach the bottom film 2111 and abut against the bottom film 2111 to achieve circuit conduction.

[0087] In one embodiment, the auxiliary moving contact module 22 includes an auxiliary moving contact 221 and an elastic member 222, one end of the auxiliary moving contact 221 is fixedly connected to the circuit board 13, the other end of the auxiliary moving contact 221 extends toward the auxiliary static contact module 21, and is arranged opposite to the auxiliary static contact 211, one end of the elastic member 222 is connected to the mounting frame 1, and the other end of the elastic member 222 is connected to the auxiliary moving contact 221; wherein, in the conducting state, the auxiliary moving contact 221 squeezes the elastic member 222 to abut against the two auxiliary static contact modules 21.

[0088] In this embodiment, if Figure 1 and Figure 2 As shown, the auxiliary moving contact 221 includes a fixed end and a movable end, and the fixed end and the movable end are arranged at both ends of the extension direction of the auxiliary moving contact 221. The fixed end is fixed on the circuit board 13, and the movable end can be movable relative to the fixed end, and can approach or move away from the bottom film 2111. One end of the elastic member 222 is connected to the mounting plate 12 of the mounting frame 1, and the other end is connected to the auxiliary moving contact 221, and the elastic member 222 is closer to the movable end than the fixed end.

[0089] It can be understood that the main contact structure is mechanically connected to the auxiliary moving contact 221. When the main contact structure is closed, it will drive the auxiliary moving contact 221 to move, and the auxiliary moving contact 221 will overcome the elastic force of the elastic member 222 and approach the bottom film 2111. In the conductive state, the auxiliary moving contact 221 respectively abuts against the bottom films 2111 of the two auxiliary static contact modules 21 to achieve conduction of the external circuit. At the same time, the elastic member 222 is provided to ensure that the auxiliary moving contact 221 can be quickly reset when the main contact structure is disconnected to avoid sticking with the auxiliary static contact module 21.

[0090] In one embodiment, the auxiliary moving contact 221 is provided with a bending portion 2211, the bending portion 2211 protrudes toward the auxiliary static contact module 21, and the bending portion 2211 is located at one end of the auxiliary moving contact 221; it can be understood that, if Figure 8 As shown, the auxiliary moving contact 221 is provided with a bending portion 2211 at the movable end, and the bending portion 2211 protrudes toward the auxiliary static contact module 21, so that when the movable end moves toward the bottom film 2111, it can better abut against the bottom film 2111 through the protrusion of the bending portion 2211, thereby improving the abutment effect and circuit conduction effect.

[0091] Optionally, the auxiliary moving contact 221 is provided with a plurality of process holes 2212. It is understandable that Figure 8 As shown, the provision of the process hole 2212 can increase the toughness of the auxiliary moving contact 221 , improve the fatigue strength of the auxiliary moving contact 221 , and ensure the rapid resetting of the auxiliary moving contact 221 when released.

[0092] The utility model also provides a relay, which includes a main contact and the auxiliary contact structure 100, wherein the main contact is connected to the mounting frame 1 of the auxiliary contact structure 100. The specific structure of the auxiliary contact structure 100 refers to the aforementioned embodiment, and since the present relay adopts all the technical solutions of all the aforementioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the aforementioned embodiments, which will not be described one by one here.

[0093] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An auxiliary contact structure, characterized in that: The auxiliary contact structure comprises: A mounting frame, wherein the mounting frame is provided with a circuit board; an auxiliary contact assembly, the auxiliary contact assembly being disposed on the circuit board, the auxiliary contact assembly being formed with a slot; and A contact finger assembly is inserted into the slot.

2. The auxiliary contact structure according to claim 1, characterized in that: The auxiliary contact assembly includes two auxiliary static contact modules, each of which includes an auxiliary static contact and an adapter, the auxiliary static contact is arranged on the mounting frame and electrically connected to the adapter, the adapter is arranged on the circuit board, and the adapter forms the slot; The contact finger assembly includes two contact fingers, and each of the contact fingers is plugged into one of the slots.

3. The auxiliary contact structure according to claim 2, characterized in that: The circuit board is provided with a plug hole, and the adapter includes at least two adapter plates, which enclose the slot, one end of each adapter plate is fixed to the edge of the plug hole, and the other end of each adapter plate extends into the plug hole and extends away from the circuit board.

4. The auxiliary contact structure according to claim 3, characterized in that: The circuit board is further provided with at least two first limiting holes, and the at least two first limiting holes are evenly distributed around the plug hole at the periphery of the plug hole; The adapter plate is provided with a positioning portion, and each of the positioning portions can extend into one of the first limiting holes to limit the adapter plate.

5. The auxiliary contact structure according to claim 4, characterized in that: The adapter also includes: A supporting portion, the supporting portion is connected to the positioning portion, the supporting portion is located between the first limiting hole and the plug-in hole, and abuts against the circuit board; and An elastic part is connected to the supporting part, and one end of the elastic part away from the supporting part extends into the plug hole and extends in a direction away from the supporting part.

6. The auxiliary contact structure according to claim 5, characterized in that: The extension direction of the elastic part is set at an angle with the axial direction of the plug hole, and the elastic part starts from the support part and gradually extends toward the axial direction of the plug hole; Alternatively, the elastic portion includes a first part and a second part, the extension direction of the first part is parallel to the axial direction of the plug hole, the extension direction of the second part is set at an angle to the axial direction of the plug hole, and the second part gradually extends toward the axial direction of the plug hole.

7. The auxiliary contact structure according to claim 5, characterized in that: The elastic part is provided with a force unloading groove, and the force unloading groove is extended along the extension direction of the elastic part; And / or, a hole wall of the plug hole is provided with a limiting groove, and part of the supporting portion is limitedly disposed in the limiting groove.

8. The auxiliary contact structure according to claim 2, characterized in that: The auxiliary static contact comprises: A bottom film, the bottom film being limitedly arranged on the mounting frame; and Two vertical pieces, the two vertical pieces are connected to the bottom piece, the two vertical pieces extend away from the bottom piece toward the circuit board, and the two vertical pieces are electrically connected to the adapter.

9. The auxiliary contact structure according to claim 8, characterized in that: The circuit board is provided with two second limiting holes, and each of the vertical sheets is provided with a limiting column at one end away from the bottom sheet, and the limiting column is limitedly arranged in the second limiting hole; And / or, the mounting frame is provided with a positioning convex bump, the bottom plate is provided with a positioning hole corresponding to the positioning convex bump, and the positioning convex bump extends into the positioning hole to limit the auxiliary static contact.

10. The auxiliary contact structure according to any one of claims 1 to 9, characterized in that: The auxiliary contact assembly comprises an auxiliary moving contact module and two auxiliary stationary contact modules, and one end of the auxiliary moving contact module is fixedly arranged on the circuit board; Among them, the auxiliary contact structure has a conducting state and a separating state. In the conducting state, the other end of the auxiliary moving contact module is used to abut against the two auxiliary static contact modules to conduct the two auxiliary static contact modules. In the separating state, the other end of the auxiliary moving contact module is separated from the two auxiliary static contact modules.

11. The auxiliary contact structure according to claim 10, characterized in that: The auxiliary moving contact module comprises: an auxiliary moving contact, one end of which is fixedly connected to the circuit board, and the other end of which extends toward the auxiliary static contact module and is arranged opposite to the auxiliary static contact; and An elastic member, one end of which is connected to the mounting frame, and the other end of which is connected to the auxiliary moving contact; Wherein, in the conducting state, the auxiliary moving contact presses the elastic member to abut against the two auxiliary static contact modules.

12. The auxiliary contact structure according to claim 11, characterized in that: The auxiliary moving contact is provided with a bending portion, the bending portion protrudes toward the direction of the auxiliary static contact module, and the bending portion is located at the movable end of the auxiliary moving contact; And / or, the auxiliary moving contact is provided with a plurality of process holes.

13. A relay, characterized in that: The relay comprises: Main contacts; and The auxiliary contact structure according to any one of claims 1 to 12, wherein the main contact is connected to a mounting frame of the auxiliary contact structure.

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