Relay

Abstract

The relay comprises a base, a static contact assembly and a moving part, at least two contact spaces are distributed on the base in the Y-axis direction, the contact spaces are opened in the X-axis direction, and the static contact assembly is provided with static contacts contained in the contact spaces; the moving part swings relative to the base and comprises moving contact pieces arranged corresponding to the contact spaces. The moving contact pieces are arranged in the Y-axis direction and are provided with moving contacts extending into the contact spaces from the openings and corresponding to the static contacts. The base is provided with an insulating part used for separating two adjacent contact spaces, the insulating part extends out of the opening in the X-axis direction, the moving part is provided with a separating part corresponding to the insulating part, and the separating part and the insulating part are matched to form a plug-in structure. The plugging structure comprises at least two insulating walls which are arranged at intervals along the Y-axis direction and a first insulating plate which is inserted into the interval between the two adjacent insulating walls. During breaking, the insulation effect is good, and the phenomenon of arc short circuit breakdown is not prone to occurring.

Description

Technical Field

[0001] The invention relates to the field of switches, and in particular to a relay. Background Art

[0002] A relay is an electrical control device that is widely used in control circuits of household appliances, remote controls, communications, and automation. Its actual function is to use a smaller current to control a larger current as an automatic switch.

[0003] Relays belong to a type of low-voltage switch. Due to their switch properties, there are certain requirements for their electrical safety and insulation performance. The relay includes a base, a magnetic circuit part and a contact part. The base is provided with a contact space, and the contact space is provided with an opening. The magnetic circuit part includes a coil assembly fixed relative to the base and an armature assembly driven by the coil assembly to swing. The contact part includes a moving contact and a stationary contact. The moving contact is connected to the armature assembly to form a moving part driven by the coil assembly to swing relative to the base. The moving contact and the stationary contact are respectively provided with a moving contact and a stationary contact. The stationary contact is fixed in the contact space. The moving contact can extend into the contact space from the opening of the contact space and be driven by the coil assembly to close or disconnect with the stationary contact. When there are multiple static contacts and they form at least two static contact groups, there are also multiple moving contacts and they correspond one-to-one with the static contacts to form multiple contact groups. Each contact group is connected to an external load. In practice, it is found that this relay can be used normally in home situations, but when this relay is used in industrial control, since industrial control generally uses three-phase electricity and adjacent loads are in different phases, there is a potential difference between the two adjacent contact groups during the process of the relay disconnecting the load, which is prone to arc short-circuit breakdown. Summary of the invention

[0004] The object of the present invention is to overcome the above-mentioned defects or problems existing in the background technology and to provide a relay which has good insulation effect when disconnecting and is not prone to arc short circuit breakdown.

[0005] To achieve the above objectives, the present invention and its preferred embodiments adopt the following technical solutions, but the embodiments are not limited to the following solutions:

[0006] Technical solution one and its related embodiments provide a relay, which includes a base, a static contact group and a moving part, wherein the base is provided with at least two contact spaces along the Y-axis direction, and the contact space is open along the X-axis direction; the static contact group is arranged corresponding to the contact space and is provided with a static contact accommodated in the contact space; the moving part swings relative to the base and has at least a movement component along the Z-axis direction, the moving part includes a moving contact arranged corresponding to the contact space, each moving contact is arranged along the Y-axis direction and is provided with a moving contact extending from the opening into the contact space and corresponding to the static contact, and the moving contact is suitable for closing or disconnecting with the static contact along the Z-axis direction; the base is provided with an insulating part for separating two adjacent contact spaces, the insulating part extends out of the opening along the X-axis direction, the moving part is provided with a partitioning part arranged corresponding to the insulating part, the partitioning part cooperates with the insulating part to form a plug-in structure, and the plug-in structure includes at least two insulating walls arranged at intervals along the Y-axis direction and a first insulating plate inserted into the gap between two adjacent insulating walls.

[0007] Based on technical solution one, technical solution two is also provided. In technical solution two and its related embodiments, the insulating portion is provided with the insulating wall, the insulating wall extends out of the opening along the X-axis direction, and the partition portion is provided with the first insulating plate.

[0008] Based on Technical Solution 2, there is also provided Technical Solution 3. In Technical Solution 3 and its related embodiments, the first insulating plate is suitable for extending into the gap between the opening portions extending from the corresponding two adjacent insulating walls.

[0009] Based on Technical Solution Three, Technical Solution Four is also provided. Technical Solution Four and its related embodiments further include a coil assembly, which is fixed relative to the base and is provided with a coil frame extending along the Z-axis direction and an iron core extending along the Z-axis direction and penetrating the coil frame, the iron core is provided with a magnetic pole portion protruding from the first side of the coil frame along the Z-axis direction, the first side of the coil frame is provided with a second insulating plate located between the magnetic pole portion and the contact space along the X-axis direction, and the second insulating plate is perpendicular to the X-axis direction; the moving component is placed on the first side of the coil frame.

[0010] Based on Technical Solution 4, Technical Solution 5 is also provided. In Technical Solution 5 and its related embodiments, the moving part includes an armature driven by the magnetism of the coil assembly and an insulating part fixedly connected to the armature and each moving contact; the armature is located on the side of the second insulating plate close to the magnetic pole portion along the X-axis direction and is suitable for being attracted to or away from the magnetic pole portion; the insulating part is provided with the first insulating plate, and a baffle is also provided on the side of the insulating part close to the second insulating plate; when the static contact and the moving contact are closed, the baffle is parallel to the second insulating plate and separates the armature and the second insulating plate along the X-axis direction.

[0011] Based on technical solution five, technical solution six is ​​also provided. In technical solution six and its related embodiments, the armature and the moving contact are respectively fixed to two sides of the insulating part facing away from each other; the insulating part is provided with an isolation part for separating two adjacent moving contacts along the Y-axis direction, and one end of the first insulating plate away from the isolation space is connected to the isolation part and cooperates with the isolation part to form a blocking part for separating two adjacent moving contacts.

[0012] Based on Technical Solution Five, Technical Solution Seven is also provided. In Technical Solution Seven and its related embodiments, the first side of the coil frame is provided with second insulating plates corresponding to each contact space one by one, and each second insulating plate is arranged at intervals along the Y-axis direction; the first insulating plate is also suitable for extending between the corresponding two second insulating plates.

[0013] Based on Technical Solution Seven, Technical Solution Eight is also provided. In Technical Solution Eight and its related embodiments, each static contact is located at the same height along the Z-axis direction, each second insulating plate is located at the same height along the Z-axis direction, and the second insulating plate is flush with the static contact along the Z-axis direction or protrudes relative to the static contact along the Z-axis direction.

[0014] Based on technical solution five, technical solution nine is also provided. In technical solution nine and its related embodiments, an isolation groove with an opening facing away from the armature is provided on the side of the baffle plate close to the second insulating plate, and the isolation groove extends along the length direction of the baffle plate.

[0015] Based on any one of technical solutions four to nine, a technical solution ten is also provided. In technical solution ten and its related embodiments, the coil assembly is also provided with a coil winding extending along the Z-axis direction; an abutment wall perpendicular to the Z-axis direction is protruding from the first side of the coil frame close to the contact space, and the base is provided with an abutment surface suitable for abutting the abutment wall to separate the coil winding and the contact space along the Z-axis direction.

[0016] Based on any one of technical solutions one to nine, a technical solution eleven is also provided. In the technical solution eleven and its related embodiments, an isolation wall is also provided in each contact space, and the isolation wall is provided with an isolation wall perpendicular to the Y-axis direction and two extension walls perpendicular to the Z-axis direction. The two extension walls are respectively formed on both sides of the free end of the isolation wall along the Y-axis direction and are arranged at intervals along the Y-axis direction; each static contact group is provided with two static contacts arranged along the Y-axis direction, and the two static contacts are suitable for being separated by the isolation wall.

[0017] Based on technical solution eleven, technical solution twelve is also provided. In technical solution twelve and its related embodiments, each static contact group is used to connect to loads of different phases.

[0018] From the above description of the present invention and its preferred embodiments, it can be seen that, compared with the prior art, the technical solution of the present invention and its preferred embodiments have the following beneficial effects due to the adoption of the following technical means:

[0019] The applicant has learned through continuous observation, experimentation and research that the reason why the technical problem of "there is a potential difference between two adjacent contact groups in the process of the relay disconnecting the load, which is prone to arc short-circuit breakdown" in the existing technical solution is that the two adjacent contact groups of the existing relay are isolated by air and can only be used to switch different loads with the same voltage phase. When switching loads with different voltage phases, the arcs of adjacent contact groups will attract each other at the moment of relay disconnection, thereby causing arc breakdown and short-circuit, causing the relay to fail.

[0020] In the technical solution 1 and its preferred embodiment, when the relay is connected to loads of different potentials at the same time and is used to switch loads of different potentials, since the insulating part separates the two adjacent contact spaces, the insulating part extends out of the opening of the contact space along the X-axis direction, and the partition part cooperates with the insulating part to form a plug-in structure, and the plug-in structure includes at least two insulating walls arranged at intervals along the Y-axis direction and a first insulating plate inserted in the interval between the two adjacent insulating walls. Therefore, when the contact groups of the two adjacent contact spaces are disconnected, the arc is blocked from moving in the Y-axis direction, and can only bypass the plug-in structure formed by the partition part and the insulating part from the outside, that is, at least bypass the insulating wall, the first insulating plate, and the gap between the insulating wall and the first insulating plate. The arc path is longer, thereby reducing and blocking the possibility of arc connection when the adjacent contact groups are disconnected, and it is not easy to produce arc short-circuit breakdown. The setting of the insulating part can increase the strength of the base, and the partition part can cooperate with the insulating part to isolate the moving contacts of the two adjacent moving contacts during the relay disconnection process, thereby further increasing the insulation strength of the relay.

[0021] Compared with the prior art, the present technical solution does not need to increase the space occupied by the relay in the X-axis direction, the Y-axis direction and the Z-axis direction, and the improvement of the relay is only in the setting of the insulating part and the setting of the partition part, and there is no need to change the assembly process of the relay product, so that the insulation strength of the relay is greatly increased by minimally changing the relay, which is not only ingenious in structure but also low in cost. In addition, the relay of the present technical solution can also be connected to a load of the same potential, so it has a wider applicability and can be applied to different application environments.

[0022] In technical solution 2 and its preferred embodiment, the insulating part is provided with at least two insulating walls, the insulating walls extend out of the opening along the X-axis direction, and the partition part is provided with a first insulating plate. Compared with the solution in which the insulating part is provided with a first insulating plate and the partition part is provided with at least two insulating walls, on the one hand, at least two insulating walls are provided on the insulating part, which is more conducive to increasing the strength of the base. On the other hand, if at least two insulating walls are formed on the partition part, compared with forming the first insulating plate on the partition part, in order to avoid the moving part of the dynamic contact, the length along the Y-axis direction will be longer. That is to say, forming a first insulating plate on the partition part can make the length of the relay in the Y-axis direction shorter. More advantageously, the modification of the mold of the moving part is smaller during production and processing, which is more conducive to reducing processing costs.

[0023] In technical solution three and its preferred embodiments, since the moving part has at least a movement component along the Z-axis direction, the first insulating plate also has a movement component along the Z-axis direction, and the first insulating plate is suitable for extending into the gap between the corresponding two adjacent insulating walls extending out of the opening portion, thereby avoiding interference between the first insulating plate and the outer wall of the base. If the first insulating plate extends into the portion of the two insulating walls located in the contact space, it is necessary to open an avoidance opening on the outer wall of the base corresponding to the contact space, which will undoubtedly reduce the strength of the base. Therefore, this technical solution avoids interference of the base with the first insulating plate and ensures the strength of the base.

[0024] In technical solution 4 and its preferred embodiment, the provision of the second insulating plate can increase the arc path of the arc reaching the magnetic pole part when the contact group is disconnected, thereby increasing the insulation strength and making it less likely to cause arc short-circuit breakdown.

[0025] In technical solution five and its preferred embodiments, the armature is located on the side of the second insulating plate close to the magnetic pole portion along the X-axis direction and is suitable for being attracted to or away from the magnetic pole portion; the insulating member is provided with a first insulating plate, and a baffle is also provided on the side close to the second insulating plate; when the static contact and the moving contact are closed, the baffle is parallel to each second insulating plate and separates the armature and each second insulating plate along the X-axis direction. Therefore, when the contact group in the contact space is disconnected, the arc is blocked from moving in the X-axis direction, and can only reach the armature (or magnetic pole portion) from the outside by bypassing the free end of the second insulating plate, the gap between the second insulating plate and the baffle, and the free end of the baffle. The arc path is longer, thereby reducing and blocking the possibility of arc connectivity, increasing the insulation strength, and not easily causing arc short-circuit breakdown.

[0026] In technical solution six and its preferred embodiment, one end of the first insulating plate away from the isolation space is connected to the isolation part and cooperates with the isolation part to form a blocking part that separates two adjacent moving contacts. The blocking part can block the arc between the moving contacts of two adjacent moving contacts along the Y-axis direction during the relay disconnection process, further reducing and blocking the possibility of arc connection.

[0027] In technical solution seven and its preferred embodiment, a second insulating plate corresponding to each contact space is provided on the first side of the coil frame, and each second insulating plate is arranged at intervals along the Y-axis direction; the first insulating plate is also suitable for extending between the corresponding two second insulating plates, avoiding the second insulating plate from interfering with the movement of the first insulating plate and ensuring the height of the first insulating plate.

[0028] In technical solution eight and its preferred embodiments, each static contact is located at the same height along the Z-axis direction, each second insulating plate is located at the same height along the Z-axis direction, the second insulating plate is flush with the static contact along the Z-axis direction or protrudes relative to the static contact along the Z-axis direction, thereby ensuring that the second insulating plate blocks the arc for the static contact and the armature.

[0029] In technical solution nine and its preferred embodiments, an isolation groove with an opening facing away from the armature is provided on the side of the baffle close to the second insulating plate, and the isolation groove extends along the length direction of the baffle. The isolation groove can accommodate the arc when the relay is disconnected. Compared with the flat surface of the side of the baffle close to the second insulating plate facing away from the armature, the creepage distance between the contact group and the armature is longer when the contact group is disconnected, and the insulation effect is better.

[0030] In technical solution ten and its preferred embodiments, a first side of the coil frame is provided with an abutment wall protruding near the contact space and perpendicular to the Z-axis direction, and the base is provided with an abutment surface suitable for abutting the abutment wall to separate the coil winding and the contact space along the Z-axis direction, thereby effectively blocking the arc between the coil winding and the contact group and improving the insulation strength of the relay.

[0031] In technical solution eleven and its preferred embodiments, the structural setting of the isolation wall makes the creepage distance between adjacent static contacts in the contact space longer and the insulation effect better.

[0032] In Technical Solution 12 and its preferred embodiment, each static contact group is used to connect to loads of different phases, which is a preferred implementation of Technical Solution 1. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 It is a three-dimensional exploded view of the relay of Embodiment 1 of the present invention;

[0035] Figure 2 Schematic diagram of the base, static contact and coil terminal of embodiment 1 of the present invention Figure 1 ;

[0036] Figure 3 Schematic diagram of the base, static contact and coil terminal of embodiment 1 of the present invention Figure 2 ;

[0037] Figure 4 Schematic diagram of a coil assembly and an armature assembly according to Embodiment 1 of the present invention;

[0038] Figure 5 This is a schematic diagram of a relay hidden cover according to Embodiment 1 of the present invention;

[0039] Figure 6 It is a front view of the base, the stationary contact, the armature assembly and part of the coil assembly of the embodiment 1 of the present invention;

[0040] Figure 7 for Figure 6 Section view in AA direction;

[0041] Figure 8 A top view of a relay according to Embodiment 1 of the present invention;

[0042] Fig. 9 for Figure 8 A cross-sectional view in the BB direction, in which the moving contact and the stationary contact are in the disconnected state;

[0043] Fig.10 for Figure 8 A cross-sectional view in the BB direction, wherein the moving contact and the stationary contact are in a closed state;

[0044] Fig.11 A top view of a relay hidden cover according to an embodiment of the present invention;

[0045] Fig.12 for Fig.11 Cross-sectional view in CC direction;

[0046] Fig.13 is a schematic diagram of an armature assembly according to Embodiment 2 of the present invention;

[0047] Fig.14 It is a cross-sectional view of embodiment 2 of the present invention.

[0048] Description of main reference numerals:

[0049] Base 10; contact space 01; positioning space 02; bottom wall 11; first through hole 111; second through hole 112; isolation wall 12; isolation wall 121; extension wall 122; insulating wall 13; slot 14; abutment surface 15; coil assembly 20; coil frame 21; retaining wall 211; second insulating plate 212; abutment wall 213; first plug block 214; coil winding 22; coil terminal 23; iron core 24; magnetic pole portion 241; yoke 25 ; first arm 251; connecting strip 2511; first hooking groove 2512; second plug block 2513; second arm 252; notch 2521; armature assembly 30; armature 31; second hooking groove 311; insulating member 32; first insulating plate 321; baffle 322; isolation groove 323; isolation portion 324; blocking portion 325; tension spring 40; static contact 50; static contact 51; lead terminal 52; moving contact 60; moving contact 61; cover body 70. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] In the claims and the specification except for the embodiments, the terms "X-axis direction", "Y-axis direction" and "Z-axis direction" only mean that the feature with one of the above directions is perpendicular to the feature with another direction, and do not require that they must be implemented according to the "X-axis direction", "Y-axis direction" and "Z-axis direction" described in the embodiments. In the embodiments, the X-axis direction is perpendicular to the Y-axis direction and the Z-axis direction. Among them, the X-axis direction can be divided into left and right, the Y-axis direction can be divided into front and back, and the Z-axis direction can be divided into top and bottom.

[0052] In the claims, description and the above-mentioned drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. are for distinguishing different objects rather than for describing a specific order.

[0053] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the present invention.

[0054] In the claims, specification and the above drawings of the present invention, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0055] In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0056] In the claims and the specification except for the embodiments, the terms "X-axis direction", "Y-axis direction" and "Z-axis direction" only mean that the feature with one of the above directions is perpendicular to the feature with another direction, and do not require that they must be implemented according to the "X-axis direction", "Y-axis direction" and "Z-axis direction" described in the embodiments. In the embodiments, the X-axis direction is perpendicular to the Y-axis direction and the Z-axis direction. Among them, the X-axis direction can be divided into left and right, the Y-axis direction can be divided into front and back, and the Z-axis direction can be divided into top and bottom.

[0057] Example 1

[0058] See also Figure 1 , Figure 1 A relay is shown, comprising a base 10 , a magnetic circuit portion, a contact portion and a cover 70 .

[0059] See also Figure 1-3 The base 10 is a box-shaped structure with one end open. Figure 1 and Figure 3 In the embodiment, one end of the base 10 along the X-axis direction is open, and the base 10 is further provided with a bottom wall 11 opposite to the opening. One side of the base 10 along the Z-axis direction is provided with at least two contact spaces 01 along the Y-axis direction. Figure 1-3In the embodiment, the Z-axis direction is the up-down direction, the X-axis direction is the left-right direction, and the Y-axis direction is the front-back direction. The base 10 is provided with two contact spaces 01. The contact space 01 is in the shape of a long strip and is open along the X-axis direction. A partition wall 12 is provided in each contact space 01. The partition wall 12 is provided with a partition wall 121 perpendicular to the Y-axis direction and two extension walls 122 perpendicular to the Z-axis direction. The two extension walls 122 are respectively formed on both sides of the free end of the partition wall 121 along the Y-axis direction and are arranged at intervals along the Y-axis direction. The base 10 is provided with an insulating portion for separating two adjacent contact spaces 01. The insulating portion includes at least two insulating walls 13 arranged at intervals along the Y-axis direction. The two insulating walls 13 extend out of the opening along the X-axis direction. In this embodiment, the insulating portion is provided with two insulating walls 13, but it should be understood that the number of insulating walls 13 can be set to be more as needed. The base 10 is provided with a positioning space 02 below the contact space 01. The positioning space 02 is open along the X-axis direction. A slot 14 is provided in the positioning space 02 and is open along the X-axis direction. Figure 3 In the embodiment, a slot 14 is provided at each end of the positioning space 02 along the Z-axis direction, and an abutment surface 15 perpendicular to the Z-axis direction is also provided in the positioning space 02, and the abutment surface 15 is suitable for abutting against the abutment wall 213 described below along the Z-axis direction; see Figure 2 The bottom wall 11 is provided with two first through holes 111 corresponding to each contact space 01, and two second through holes 112 corresponding to the positioning space 02. In this embodiment, there are a total of four first through holes 111, and the four first through holes 111 are arranged at intervals along the Y-axis direction.

[0060] The magnetic circuit portion includes a coil assembly 20 , an armature assembly 30 and a tension spring 40 .

[0061] See also Figure 1 and Figure 9-10 The coil assembly 20 includes a coil frame 21 , a coil winding 22 , a coil terminal 23 , an iron core 24 and a yoke 25 .

[0062] See also Figure 1The coil frame 21 extends along the Z-axis direction and is provided with a center hole extending along the Z-axis direction. The coil frame 21 is provided with retaining walls 211 at both ends along the Z-axis direction. The left side of the first side (upper side) of the coil frame 21 along the Z-axis direction is provided with a second insulating plate 212 perpendicular to the X-axis direction. In this embodiment, two second insulating plates 212 arranged at intervals along the Y-axis direction are protruded from the retaining wall 211 on the first side of the coil frame 21, and each second insulating plate 212 is located at the same height along the Z-axis direction. Among them, the left end of the retaining wall 211 on the first side of the coil frame 21 is provided with an abutment wall 213 perpendicular to the Z-axis direction. The abutment wall 213 is suitable for abutting with the abutment surface 15 mentioned above to separate the coil winding 22 and the contact space 01 mentioned below along the Z-axis direction. The upper end of the left side of the coil frame 21 is provided with a first plug block 214 adapted to the slot 14 above the base 10, so that the coil frame 21 can be fixed relative to the base 10. When the coil frame 21 is fixed relative to the base 10, see Figure 8-10 The left side of the coil frame 21 faces the base 10 , and the right side faces away from the base 10 , and each second insulating plate 212 corresponds to each contact space 01 one by one.

[0063] The coil winding 22 is wound on the coil frame 21 and is located between the two retaining walls 211, so the axis of the coil winding 22 also extends along the Z-axis direction. The coil winding 22 is connected to the coil terminal 23, and the coil terminal 23 passes through the second through hole 112 of the bottom wall 11 along the X-axis direction. The iron core 24 extends along the Z-axis direction and is inserted into the center hole of the coil frame 21. The iron core 24 is provided with a magnetic pole portion 241 protruding from the first side of the coil frame 21 along the Z-axis direction, and the second insulating plate 212 is located on the left side of the magnetic pole portion 241.

[0064] The yoke 25 is L-shaped and has a first arm 251 and a second arm 252. The first arm 251 extends along the X-axis direction and is fixed to the lower end of the iron core 24. A connecting strip 2511 extending along the X-axis direction is provided on the right side of the first arm 251. A first hooking groove 2512 opening downward is provided on the right side of the connecting strip 2511. A second plug block 2513 matching the slot 14 below the base 10 is formed on the left side of the first arm 251. The second arm 252 is located on the right side of the coil frame 21 and extends upward from the right end of the first arm 251. A notch 2521 is formed at the upper end of the second arm 252.

[0065] See also Figure 4-5 , Figure 9-10The armature assembly 30 is placed on the first side of the coil frame 21 and includes an armature 31 and an insulating member 32 fixed to each other. The armature 31 is located on the side (right side) of the second insulating plate 212 close to the magnetic pole portion 241 along the X-axis direction and is suitable for being attracted to or away from the magnetic pole portion 241. The armature 31 is a plate-like structure. The right end of the armature 31 is inserted into the notch 2521 and is swung up and down to attract or away from the magnetic pole portion 241. The right end of the armature 31 is also provided with a second hooking groove 311 opening upward. The insulating member 32 is provided with a partition, which cooperates with the insulating member mentioned above to form a plug-in structure, and the plug-in structure includes at least two insulating walls 13 arranged at intervals along the Y-axis direction and a first insulating plate 321 inserted into the interval between two adjacent insulating walls 13; in this embodiment, the insulating member 32 is provided with a partition on the left side (the side close to the isolation space 01), and the partition is provided with a first insulating plate 321, and the insulating member 32 is also provided with an isolation part 324 on the right side (the side away from the isolation space 01), and the right end of the first insulating plate 321 is connected to the isolation part 324 and cooperates with the isolation part 324 to form a blocking part 325. See Figure 5-7 The first insulating plate 321 corresponds to the insulating part mentioned above and is suitable for extending into the gap between the two insulating walls 13 of the corresponding insulating part. In this embodiment, the first insulating plate 321 is suitable for extending into the gap between the two adjacent insulating walls 13 extending out of the opening. A baffle 322 is provided at the left end of the insulating member 32. It should be understood that although this embodiment only shows an embodiment in which the insulating part is provided with two insulating walls 13 and the partition is provided with the first insulating plate 321, in other embodiments, the partition may be provided with two insulating walls, the insulating part may be provided with the first insulating plate, and the portion of the first insulating plate extending out of the opening may be inserted into the gap between the two insulating walls.

[0066] See also Figure 8-10 The tension spring 40 extends along the Z-axis direction, and its upper and lower ends are respectively suitable for hooking with the second hooking groove 311 and the first hooking groove 2512.

[0067] See also Figure 1 , Figure 8-10 The contact portion includes a static contact group and a dynamic contact 60. In this embodiment, the static contact group is arranged corresponding to the contact space 01 and is provided with a static contact 51 accommodated in the contact space 01. In this embodiment, the number of static contact groups is equal to the number of contact spaces 01 and corresponds one to one, that is, the number of static contact groups is two, and each static contact group is used to connect loads of different phases. Each static contact group is arranged along the Y-axis direction. The static contact 50 is provided with a static contact 51 and a lead-out terminal 52 that passes through the first through hole 111 and extends out of the base 10. In this embodiment, the two static contacts 50 are separated by an isolation wall 12, and each static contact 51 is located at the same height along the Z-axis direction, and the second insulating plate 212 is flush with the static contact 51 along the Z-axis direction or protrudes relative to the static contact 51 along the Z-axis direction.

[0068] The movable contact 60 is arranged corresponding to the contact space 01. Each movable contact 60 is arranged along the Y-axis direction and is provided with a movable contact 61 extending from the opening into the contact space 01 and corresponding to the static contact 51. The movable contact 61 is suitable for closing or opening with the static contact 51 along the Z-axis direction. In this embodiment, the armature 31 and the movable contact 60 are respectively fixed to the two sides of the insulating member 32 that are away from each other. Figure 5-6 The isolation portion 324 and the first insulating plate 321 separate two adjacent moving contacts 60 along the Y-axis direction, that is, the blocking portion 325 separates two adjacent moving contacts 60 .

[0069] In this embodiment, there are two movable contacts 60 . Each movable contact 60 is provided with two movable contact points 61 . Each movable contact 60 is fixedly connected to the insulating member 32 and is located above the baffle 322 . The movable contact point 61 is located on the left side of the baffle 322 .

[0070] The cover body 70 is used to cooperate with the base 10. It is a box-shaped structure with one end open. It cooperates with the base 10 to form a receiving space for accommodating the magnetic circuit part.

[0071] The installation process of the relay of this embodiment is as follows:

[0072] The static contact 50 is fixedly connected to the base 10 and the lead terminal 52 is passed through the first through hole 111 and extended out of the base 10. The coil terminal 23 is fixedly connected to the base 10 and the coil terminal 23 is passed through the second through hole 112 and extended out of the base 10. The structure is as follows: Figure 3 As shown;

[0073] Insert the coil assembly 20 into the positioning space 02 along the X-axis direction, and the first plug block 214 and the second plug block 2513 of the coil assembly 20 respectively cooperate with the two slots 14 of the positioning space 02, so that the coil assembly 20 is fixed relative to the base 10, and then the coil winding 22 is fixedly connected to the two coil terminals 23, as shown in FIG. Figure 11-12 ;

[0074] The armature assembly 30 and the moving contact 60 are fixedly connected to form a moving component, and the moving component includes the moving contact 60 arranged corresponding to the contact space 01. The moving component is placed on the first side of the coil frame 21, and the moving contact 60 is extended into the corresponding contact space 01 so that the moving contact 61 and the static contact 51 are matched one by one. The armature 31 in the moving component is placed in the notch 2521 of the second arm 252 of the yoke 25, and then the upper and lower ends of the tension spring 40 are respectively inserted into the second hooking groove 311 and the first hooking groove 2512;

[0075] Then, the cover body 70 is fixedly connected to the base 10, and the installation is completed.

[0076] After the installation is completed, the second insulating plate 212 is located between the magnetic pole portion 241 and the contact space 01 along the X-axis direction, and the first insulating plate 321 of the moving part is located between the two insulating walls 13 along the X-axis direction. The first insulating plate 321 is also inserted between the two second insulating plates 212; the baffle 322 is close to the second insulating plate 212; the end of the first insulating plate 321 away from the isolation space 01 is connected to the isolation portion 324 and cooperates with the isolation portion 324 to form a blocking portion 325 that separates two adjacent moving contacts 60.

[0077] The working process of this embodiment is as follows:

[0078] When the armature assembly 30 is not excited by the coil assembly 20, the tension spring 40 applies force to the moving part, so that the moving contact 61 is disconnected from the stationary contact 51;

[0079] When voltage is applied to the coil assembly 20 for excitation, the armature 31 is attracted by the magnetic pole portion 241 of the iron core 24 and drives the moving part to swing relative to the base 10 until the armature 31 is in contact with the magnetic pole portion 241. When the moving part swings, it has movement components along the Z-axis direction and the X-axis direction, so that the moving contact 61 and the static contact 51 are closed along the Z-axis direction. At this time, the moving contact 60 connects the two static contacts 51 of the corresponding static contact 50. At this time, the tension spring 40 stores energy, and the baffle 322 is parallel to each second insulating plate 212 and separates the armature 31 and the second insulating plate 212 along the X-axis direction. The second insulating plate 212 separates the armature 31 and the contact space 01 along the X-axis direction.

[0080] When the pressure on the coil assembly 20 stops, the tension spring 40 releases energy to drive the moving part to rotate clockwise, the armature 31 moves away from the magnetic pole portion 241, and the moving contact 61 is disconnected from the static contact 51.

[0081] In this embodiment, when the relay is connected to loads of different potentials at the same time and is used to switch loads of different potentials, since the insulating part separates the two adjacent contact spaces 01, the insulating part extends out of the opening of the contact space along the X-axis direction, and the partition part cooperates with the insulating part to form a plug-in structure, the plug-in structure includes at least two insulating walls arranged at intervals along the Y-axis direction and a first insulating plate 321 inserted into the gap between two adjacent insulating walls 13, so the arc is blocked from moving in the Y-axis direction when the contact groups of the two adjacent contact spaces are disconnected, and can only bypass the plug-in structure formed by the partition part and the insulating part from the outside, that is, at least bypass the insulating wall 13, the first insulating plate 321 and the gap between the insulating wall 13 and the first insulating plate 321, and the arc path is longer, thereby reducing and blocking the possibility of arc connection when the adjacent contact groups are disconnected, and arc short circuit breakdown is not easy to occur. The setting of the insulating part can increase the strength of the base 10, and the partition part can cooperate with the insulating part to isolate the moving contacts 61 of the two adjacent moving contacts 60 during the relay disconnection process, thereby further increasing the insulation strength of the relay. Compared with the prior art, this embodiment does not need to increase the space occupied by the relay in the X-axis direction, the Y-axis direction and the Z-axis direction, and the improvement of the relay is only in the setting of the insulating part and the setting of the first insulating plate 321, and there is no need to change the assembly process of the relay product, so that the insulation strength of the relay is greatly increased by minimally changing the relay, which is not only ingenious in structure but also low in cost. In addition, the relay of this embodiment can also be connected to a load of the same potential, so it has a wider applicability and can be applied to different application environments.

[0082] In this embodiment, the insulating part is provided with at least two insulating walls 13, and the insulating wall 13 extends out of the opening along the X-axis direction. The partition part is provided with a first insulating plate 321. Compared with the scheme in which the insulating part is provided with the first insulating plate 321 and the partition part is provided with at least two insulating walls 13, on the one hand, at least two insulating walls 13 provided on the insulating part are more conducive to increasing the strength of the base 10. On the other hand, if at least two insulating walls 13 are formed on the partition part, compared with forming the first insulating plate 321 on the partition part, in order to avoid the moving contact 60, the length of the moving part along the Y-axis direction will be longer. That is to say, forming the first insulating plate 321 on the partition part can make the length of the relay in the Y-axis direction shorter. More advantageously, the modification of the moving part mold during production and processing is smaller, which is more conducive to reducing processing costs.

[0083] In this embodiment, since the moving part has at least a movement component along the Z-axis direction, the first insulating plate 321 also has a movement component along the Z-axis direction, and the first insulating plate 321 is suitable for extending into the gap between the corresponding two adjacent insulating walls 13 extending out of the opening portion, thereby avoiding interference between the first insulating plate 321 and the outer wall of the base 10. If the first insulating plate 321 extends into the portion of the two insulating walls 13 located in the contact space 01, it is necessary to open an avoidance opening on the outer wall of the base 10 corresponding to the contact space 01, which will undoubtedly reduce the strength of the base 10. Therefore, this embodiment avoids interference of the base 10 with the first insulating plate 321 and ensures the strength of the base 10.

[0084] In the embodiment, the second insulating plate 212 can increase the arc path of the arc reaching the magnetic pole when the contact assembly is disconnected, thereby increasing the insulation strength and preventing arc short circuit breakdown from occurring.

[0085] In this embodiment, the armature 31 is located on the side of the second insulating plate 212 close to the magnetic pole portion 241 along the X-axis direction and is suitable for being attracted to or away from the magnetic pole portion 241; the insulating member 32 is provided with a first insulating plate 321, and a baffle 322 is also provided on the side close to the second insulating plate 212; when the static contact 51 and the moving contact 61 are closed, the baffle 322 is parallel to each second insulating plate 212 and separates the armature 31 and each second insulating plate 212 along the X-axis direction. Therefore, when the contact group in the contact space 01 is disconnected, the arc is blocked from moving in the X-axis direction, and can only bypass the free end of the second insulating plate 212, the gap between the second insulating plate 212 and the baffle 322, and the free end of the baffle 322 from the outside to reach the armature 31. The arc path is long, thereby reducing and blocking the possibility of arc connection, increasing the insulation strength, and not easily causing arc short-circuit breakdown.

[0086] In this embodiment, one end of the first insulating plate 321 away from the isolation space 01 is connected to the isolation portion 324 and cooperates with the isolation portion 324 to form a blocking portion 325 that separates two adjacent moving contacts 60. The blocking portion 325 can block the arc between the moving contacts of two adjacent moving contacts 60 along the Y-axis direction during the relay disconnection process, further reducing and blocking the possibility of arc connectivity.

[0087] In this embodiment, the first side of the coil frame 21 is provided with second insulating plates 212 corresponding to each contact space 01, and each second insulating plate 212 is arranged at intervals along the Y-axis direction; the first insulating plate 321 is also suitable for extending between the corresponding two second insulating plates 212, avoiding the second insulating plate 212 from interfering with the movement of the first insulating plate 321 and ensuring the height of the first insulating plate 321.

[0088] In this embodiment, each static contact 51 is located at the same height along the Z-axis direction, each second insulating plate 212 is located at the same height along the Z-axis direction, the second insulating plate 212 is flush with the static contact 51 along the Z-axis direction or protrudes relative to the static contact 51 along the Z-axis direction, thereby ensuring that the second insulating plate 212 blocks the arc for the static contact 51 and the armature 31.

[0089] In this embodiment, a first side of the coil frame 21 is provided with an abutment wall 213 protruding from the contact space 01 and perpendicular to the Z-axis direction, and the base 10 is provided with an abutment surface 15 suitable for abutting the abutment wall 213 to separate the coil winding 22 and the contact space 01 along the Z-axis direction, thereby effectively blocking the arc between the coil winding 22 and the contact group and improving the insulation strength of the relay.

[0090] In this embodiment, the structural setting of the isolation wall 12 makes the creepage distance between adjacent static contacts 50 in the contact space 01 longer and the insulation effect better.

[0091] Example 2

[0092] The structure of Example 2 is basically the same as that of Example 1, except that Figure 13-14 A side (left side) of the baffle 322 close to the second insulating plate 212 is also provided with an isolation groove 323 with an opening facing away from the armature 31. The isolation groove 323 extends along the length direction of the baffle 322. The isolation groove 323 can accommodate an arc when the relay is disconnected. Compared with the side of the baffle 322 close to the second insulating plate 212 facing away from the armature 31, which is a flat surface, the creepage distance between the contact group and the armature 31 is longer when the contact group is disconnected, and the insulation effect is better.

[0093] The description of the above specification and embodiments is used to explain the protection scope of the present invention, but does not constitute a limitation on the protection scope of the present invention. Through the enlightenment of the present invention or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent substitutions or other improvements to the embodiments of the present invention or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the present invention.

Claims

1. A relay, comprising a base, a static contact group and a moving part, wherein the base is provided with at least two contact spaces along the Y-axis direction, and the contact space is open along the X-axis direction; the static contact group is arranged corresponding to the contact space and is provided with a static contact accommodated in the contact space; the moving part swings relative to the base and has at least a movement component along the Z-axis direction, the moving part comprises a moving contact arranged corresponding to the contact space, each moving contact is arranged along the Y-axis direction and is provided with a moving contact extending from the opening into the contact space and corresponding to the static contact, the moving contact being suitable for closing or disconnecting with the static contact along the Z-axis direction; the base is provided with an insulating part for separating two adjacent contact spaces, the insulating part extends out of the opening along the X-axis direction, the moving part is provided with a partitioning part arranged corresponding to the insulating part, the partitioning part cooperates with the insulating part to form a plug-in structure, the plug-in structure comprises at least two insulating walls arranged at intervals along the Y-axis direction and a first insulating plate inserted into the gap between two adjacent insulating walls.

2. A relay as claimed in claim 1, characterized in that: The insulating portion is provided with the insulating wall, the insulating wall extends out of the opening along the X-axis direction, and the partition portion is provided with the first insulating plate.

3. A relay as claimed in claim 2, characterized in that: The first insulating plate is suitable for extending into a gap between two adjacent insulating wall protruding opening portions.

4. A relay as claimed in claim 3, characterized in that: It also includes a coil assembly, which is fixed relative to the base and is provided with a coil frame extending along the Z-axis direction and an iron core extending along the Z-axis direction and penetrating the coil frame, the iron core is provided with a magnetic pole portion protruding from the first side of the coil frame along the Z-axis direction, the first side of the coil frame is provided with a second insulating plate located between the magnetic pole portion and the contact space along the X-axis direction, and the second insulating plate is perpendicular to the X-axis direction; the moving component is placed on the first side of the coil frame.

5. A relay as claimed in claim 4, characterized in that: The moving part includes an armature driven by the magnetism of the coil assembly and an insulating member fixedly connected to the armature and each moving contact; the armature is located on a side of the second insulating plate close to the magnetic pole portion along the X-axis direction and is suitable for being attracted to or away from the magnetic pole portion; the insulating member is provided with the first insulating plate, and a baffle is also provided on a side of the insulating member close to the second insulating plate; When the static contact and the movable contact are closed, the baffle is parallel to the second insulating plate and separates the armature and the second insulating plate along the X-axis direction.

6. A relay as claimed in claim 5, characterized in that: The armature and the moving contact are respectively fixed to two sides of the insulating member facing away from each other; the insulating member is provided with an isolation portion for separating two adjacent moving contacts along the Y-axis direction, and one end of the first insulating plate away from the isolation space is connected to the isolation portion and cooperates with the isolation portion to form a blocking portion for separating two adjacent moving contacts.

7. A relay as claimed in claim 5, characterized in that: The first side of the coil frame is provided with second insulating plates corresponding to each contact space one by one, and each second insulating plate is arranged at intervals along the Y-axis direction; the first insulating plate is also suitable for extending between two corresponding second insulating plates.

8. A relay as claimed in claim 7, characterized in that: Each static contact is at the same height along the Z-axis direction, each second insulating plate is at the same height along the Z-axis direction, and the second insulating plate is flush with the static contact along the Z-axis direction or protrudes relative to the static contact along the Z-axis direction.

9. A relay as claimed in claim 5, characterized in that: A separation groove with an opening facing away from the armature is also provided on one side of the baffle plate close to the second insulating plate, and the separation groove extends along the length direction of the baffle plate.

10. A relay according to any one of claims 4 to 9, characterized in that: The coil assembly is also provided with a coil winding extending along the Z-axis direction; a first side of the coil frame is provided with an abutment wall protruding near the contact space and perpendicular to the Z-axis direction, and the base is provided with an abutment surface suitable for abutting the abutment wall to separate the coil winding and the contact space along the Z-axis direction.

11. A relay according to any one of claims 1 to 9, characterized in that: An isolation wall is also provided in each contact space, and the isolation wall is provided with an isolation wall perpendicular to the Y-axis direction and two extension walls perpendicular to the Z-axis direction, and the two extension walls are respectively formed on both sides of the free end of the isolation wall along the Y-axis direction and are arranged at intervals along the Y-axis direction; each static contact group is provided with two static contacts arranged along the Y-axis direction, and the two static contacts are suitable for being separated by the isolation wall.

12. A relay as claimed in claim 11, characterized in that: Each static contact group is used to connect loads of different phases.

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