A relay

Abstract

The utility model relates to a kind of relays, including relay body and accommodating piece, and the relay is provided with blocking structure, blocking structure is close to contact group and is used to separate the space of coil and contact group, to inhibit airflow migration from coil to contact group, at least part static spring assembly is configured to form part of blocking structure.The utility model can inhibit contact icing before contact contact, improve the possibility of contact conduction.

Description

Technical Field

[0001] This utility model relates to the field of relay technology, and specifically to a relay. Background Technology

[0002] The relay includes a fixed part and a moving part. The fixed part includes a stationary spring assembly with a stationary contact. The moving part includes an armature and a moving contact assembly fixed to the armature. The moving contact assembly has a moving contact corresponding to the stationary contact. When the coil is not energized, the moving part remains in the position where the moving contact is disconnected from the stationary contact. When the coil is energized, the armature is attracted by the iron core, which drives the moving contact assembly to move, causing the moving contact to close with the stationary contact.

[0003] Existing relays commonly suffer from contact failure due to condensation and ice formation on the contact surface at low temperatures (e.g., ambient temperature ≤ -10℃). There is an urgent need to achieve humidity control and phase change suppression through structural innovation. Utility Model Content

[0004] The purpose of this invention is to overcome the aforementioned defects or problems in the prior art and to provide a relay that can suppress contact icing before contact and provide the possibility of contact conduction.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Technical solution one relates to a relay, including a relay body, comprising a magnetic circuit portion and a contact portion; the magnetic circuit portion includes a coil frame and a coil wound on the coil frame; the contact portion includes at least one contact group and a stationary spring assembly, the contact group including correspondingly arranged moving contacts and stationary contacts, the stationary spring assembly being fixedly connected to and fixed to the coil frame; a receiving member accommodating the coil frame, the coil, and the contact group; the relay is provided with a blocking structure, the blocking structure being close to the contact group and used to separate the space where the coil and the contact group are located, to suppress airflow migration from the coil to the contact group, at least a portion of the stationary spring assembly being configured to form part of the blocking structure.

[0007] Technical solution two based on technical solution one: The coil frame is provided with a first baffle and a second baffle at the first end and the second end along the coil axis, respectively. The contact group is close to the first baffle, and the first baffle is adapted to cooperate with the receiving member to form part of the blocking structure; the static spring assembly is at least partially located between the first baffle and the second baffle.

[0008] Technical Solution 3 based on Technical Solution 2: The axis of the coil extends along a first direction, the contact group is supported on a first baffle wall and close to the first side of the coil frame along a third direction, the moving contact is adapted to swing relative to the stationary contact in a plane perpendicular to the second direction and to close or open with the stationary contact through a motion component along the first direction; the blocking structures are respectively located on both sides of the first baffle wall along the second direction and on the first side along the first direction; the first direction, the second direction and the third direction are orthogonal to each other.

[0009] Technical Solution 4 based on Technical Solution 3: The static spring assembly is close to the first side of the coil frame along the third direction and at least partially overlaps with the projection of the coil on the plane perpendicular to the third direction, and the static spring assembly is at least in contact with the first retaining wall of the coil frame to form part of the blocking structure.

[0010] Technical solution five based on technical solution four: The accommodating member is provided with a second sidewall on the first side of the coil frame along a third direction, and the second sidewall protrudes with an abutment block suitable for abutting against the first retaining wall and / or the static spring assembly.

[0011] Technical solution six based on technical solution five: The static spring assembly is in contact with both the first and second retaining walls of the coil frame; the magnetic circuit portion further includes an armature located at the first end of the coil frame along the first direction; the contact portion further includes a moving spring, which has a first contact portion fixedly connected to the moving contact and a second contact portion fixedly connected to the armature; the receiving member and the first retaining wall also cooperate to form a first channel extending along a third direction and through which the first contact portion passes; the first channel is located between the second contact portion and the contact group along the third direction.

[0012] Technical solution seven based on technical solution six: The first retaining wall has first blocks protruding from both sides of the second contact portion along the second direction and extending along the third direction, and the receiving member has second blocks adapted to contact both first blocks to cooperate in forming the first channel, and the second blocks extend along the second direction to the two opposite sidewalls of the receiving member.

[0013] Technical solution eight based on technical solution seven: The first retaining wall is further provided with a receiving cavity for accommodating the contact group, and the receiving cavity is connected to the first channel.

[0014] Technical solution nine based on technical solution three: The first retaining wall overlaps or abuts against the receiving member to form part of the blocking structure.

[0015] Technical solution ten based on technical solution nine: The first retaining wall is provided with first connecting blocks on both sides along the second direction, the first connecting blocks form steps along the third direction, and the receiving member is provided with second connecting blocks that overlap with the two first connecting blocks respectively, the second connecting blocks extending to both ends of the receiving member along the third direction.

[0016] Based on technical solution 3 or 4, technical solution 11: The static spring assembly is provided with a first wall perpendicular to a third direction, and the static spring assembly is also provided with two second walls opposite to each other along a second direction. The first wall and the second wall are both in contact with the first and second retaining walls to form part of the blocking structure; the first wall at least partially overlaps with the projection of the coil on the projection plane perpendicular to the third direction.

[0017] Based on any one of technical solutions six to ten, technical solution twelve: the accommodating member is joined with the second baffle to form a cavity suitable for accommodating the coil and the contact group; the magnetic circuit part further includes an iron core and a yoke, the iron core penetrates the coil along a first direction, the yoke is provided with a first arm extending along the first direction and a second arm extending along a third direction, the first arm is located on the second side of the coil frame along the third direction and is fixedly connected to the moving spring; the second arm is fixedly connected to the iron core at the second end of the coil frame along the first direction.

[0018] Based on technical solution 4, technical solution 13: The receiving component includes a base and a shell fixedly connected to each other. The base is located at one end of the coil frame along the second direction and contacts both the first and second retaining walls. The ends of the first and second retaining walls away from the base along the second direction are both in contact with the shell. The magnetic circuit portion also includes an iron core, an armature, and a yoke. The contact portion also includes a movable spring fixedly connected to the movable contact. The iron core passes through the coil along the first direction. The armature is located at the first end of the coil frame along the first direction and is fixedly connected to the movable spring. The yoke has a first arm extending along the first direction and a second arm extending along a third direction. The first arm is located on the second side of the coil frame along the third direction and is fixedly connected to the movable spring. The second arm is fixedly connected to the iron core at the second end of the coil frame along the first direction.

[0019] As can be seen from the above description of this utility model, compared with the prior art, this utility model has the following beneficial effects:

[0020] Through continuous observation, experimentation, and research, the applicant has determined that the technical problem in existing solutions—namely, the common occurrence of contact failure due to condensation and ice formation on the contact surface in low-temperature environments (e.g., ambient temperature ≤ -10℃)—lies in the fact that the enameled wire of the existing relay coil is wound on a coil frame, and the gaps between the enameled wires trap or accumulate trace amounts of moisture. During the low-temperature start-up phase (e.g., ambient temperature ≤ -10℃), the heat generated after the coil is energized causes the air in the adjacent cavity to heat up rapidly, creating a significant temperature gradient with the contact chamber at ambient temperature. The thermal effect generated during the coil's energization process leads to a significant increase in the air temperature in its vicinity. This temperature rise causes the gas inside the coil cavity to expand due to heat, creating a dynamic pressure gradient between the gas and the low-temperature, non-conductive contact chamber. Driven by this pressure, the air medium containing gaseous moisture undergoes directional convection along the internal channels of the relay, causing water vapor to condense at the lower-temperature contact surface. As the relay continues to operate, this cycle of water vapor migration and condensation will cause the liquid water film on the contact surface to thicken continuously. The liquid water in the contact gap will undergo a solidification phase change, forming an ice crystal layer with insulating properties. This will prevent the contacts from making contact and conducting due to the ice layer, ultimately causing relay contact failure.

[0021] In technical solution one, the blocking structure can be formed entirely independently of the relay body, entirely by the relay body and the receiving element, or partially by the relay body and the receiving element and partially by the relay body independently. The blocking structure is located near the contact group and is used to separate the coil and the contact group to suppress airflow from the coil to the contact group. Suppression means significantly reducing, hindering, limiting, or lowering the rate or flow of airflow migration. Separation means physical or spatial separation of the space where the coil and the contact group are located. The blocking structure is close to the contact group, which can physically separate the water vapor in the corresponding part of the blocking structure, making it difficult for the moisture generated by the coil to migrate directly to the contact group at the location corresponding to the blocking structure. This prolongs the moisture path, causing it to reach the vicinity of the contact group only after the contacts are made and conducting, or causing the moisture to migrate in the direction away from the blocking structure. Compared with the prior art, this reduces the water vapor content around the contact group, making it less likely for water vapor to undergo phase change condensation at the lower temperature contact surface before the contact group is made and conducting, thus enabling the contacts to conduct effectively. At least part of the retaining spring assembly is configured to form part of the barrier structure, reusing existing relay parts as a barrier, eliminating the need for additional partition material. Since the retaining spring assembly itself needs to be assembled, the barrier can be achieved simply by adjusting its state or position. In addition, as a metal component, the metal surface of the retaining spring assembly has a certain condensation effect on the airflow flowing around it. Thus, the partial barrier formed by the retaining spring assembly can be used to condense moisture, further reducing the moisture content reaching the contact group. Compared to setting up a separate condensation component, using the retaining spring assembly to promote airflow condensation makes full use of the relay's own structure, requires minimal modification to the relay, and is cost-effective.

[0022] In technical solution two, the first baffle wall is adapted to cooperate with the receiving component to form part of the blocking structure, making full use of the structure of the coil frame and the receiving component. Furthermore, the contact group is close to the first baffle wall, which can suppress airflow in the axial region of the coil from directly migrating through the first baffle wall to the contact group. The stationary spring assembly is at least partially located between the first and second baffle walls, and can suppress airflow from the coil through the stationary spring assembly to the contact group in the radial peripheral region of the coil. Compared to a solution where the blocking structure is entirely formed independently by the relay body, the above arrangement makes full use of the structure of the coil frame and the receiving component, reducing costs. Moreover, the cooperation between the first baffle wall and the receiving component can also position the coil frame, improving its stability and thus enhancing the operational stability of the relay.

[0023] In technical solution three, the blocking structures are located on both sides of the first baffle wall along the second direction and on the first side along the first direction, respectively. This ensures that the three sides near the contact group are blocked. The three-sided blocking extends the path of water vapor to the contact group, ensuring it reaches the vicinity of the contact group only after the contacts have made contact and conducted. This suppresses water vapor inflow around the contact group, guaranteeing contact and conduction, and even isolates the contact group space from the coil space, preventing water vapor from entering the contact group space. Furthermore, the third direction is generally the length direction of the relay, and the second direction is generally the width direction of the relay. The blocking structures are located on both sides of the first baffle wall along the second direction, which increases the area blocking airflow and limits the coil frame, improving the stability of the coil frame and thus enhancing the stability of the relay during operation.

[0024] In technical solution four, the stationary spring assembly is in contact with at least the first retaining wall of the coil frame. Combined with the fact that the stationary spring assembly is located on the first side of the coil along the third direction, closer to the contact group, it is more conducive to forming a barrier near the contact group, thereby more conducive to reducing the moisture content around the contact group.

[0025] In technical solution five, the setting of the abutment block is more conducive to suppressing water vapor from the coil frame along the third direction to the first side along the first direction to the contact group, thereby further reducing the water vapor content around the contact group. In addition, the setting of the abutment block can also increase the strength of the second sidewall.

[0026] In technical solution six, the stationary spring assembly is in contact with both the first and second baffle walls, making full use of the structure of the stationary spring assembly and increasing the blocking area. This further suppresses the airflow generated by the coil from the first side of the coil frame in the third direction to the contact group via the stationary spring assembly. The first channel reduces the flow area of ​​airflow from the first end of the coil frame in the first direction to the contact group in the third direction, further preventing moisture migration to the contact group. In addition, the first channel can also limit the first contact portion of the moving spring, that is, limit the movement of the moving spring to a certain extent, ensuring that the moving spring moves within a preset range, avoiding interference between the moving spring and the inner wall of the receiving component, and improving the stability of the relay operation.

[0027] In technical solution seven, the first stop and the second stop cooperate to form the first channel, which is simple to process and easy to assemble; the second stop can limit the swing amplitude of the moving spring and improve the strength of the receiving component; the two first stops are located on both sides of the coil frame in the second direction, and the second stop is in contact with both first stops. The second stop extends along the second direction to the two opposite side walls of the receiving component, which not only increases the blocking area, but also makes the coil frame bear force evenly on both sides of the second direction, making it less prone to tilting, and further improving the stability of the relay during operation.

[0028] In technical solution eight, the arrangement of the receiving cavity can reduce the absolute content of moisture in the receiving cavity by reducing the space around the contact group, thereby reducing the probability of contact icing and thus improving the possibility of contact and conduction. Moreover, since the receiving cavity is connected to the first channel, the airflow has multiple levels of obstruction as it flows from the first end of the coil frame along the first direction to the contact group in the third direction, thereby reducing the water vapor flow speed and making it more conducive to the precipitation of water vapor before reaching the contact group, thus greatly reducing the water vapor content around the contact group.

[0029] In technical solution nine, the first barrier wall overlaps or abuts with the receiving element, which can form a more tightly fitted blocking structure on the side near the contact group, further preventing airflow from flowing to the contact group through the gap between the first barrier wall and the receiving element.

[0030] In technical solution ten, the stepped first connecting block and the second connecting block that cooperate with the first connecting block have a simpler structure and are easier to process and assemble. The second connecting block extends to both ends of the receiving member along a third direction, which is generally the length direction of the relay. The above arrangement further makes the blocking structure on both sides of the first baffle wall along the second direction have a larger blocking area, further suppressing the airflow migration to the contact group and increasing the strength of the receiving member. It also makes the receiving member and the first baffle wall on both sides along the second direction form a more balanced force structure, avoiding the warping deformation of the coil frame due to the coil winding tension. The first connecting block forms a step along the third direction, which is more conducive to reducing the length of the relay along the second direction than forming a step along the second direction.

[0031] In technical solution eleven, both the first wall and the second wall are in contact with the first and second retaining walls to form part of the blocking structure, so that the static spring assembly forms a semi-enclosed structure on the side of the coil winding near the contact group, which is more conducive to forming a barrier near the contact group, and also more conducive to water vapor condensing and precipitating on the surface of the static spring assembly before the contact is made conductive, thereby ensuring that the contact can make contact and conduct.

[0032] In technical solution twelve, both the yoke and the moving spring are metal structures, which can promote airflow condensation, thereby further reducing the water vapor content around the contact group.

[0033] In technical solution thirteen, the base is located at one end of the coil frame along the second direction and contacts both the first and second baffles. The ends of the first and second baffles away from the base are in contact with the outer casing. This makes the installation of the coil frame with the receiving component along both sides of the second direction simpler. When the outer casing is fitted along the second direction, compared with the structure of technical solution twelfth, the yoke, the stationary spring assembly, and the coil frame have virtually no resistance to the outer casing. The yoke and the moving spring are both metal structures, which can promote airflow condensation, thereby further reducing the moisture content around the contact group. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is an exploded perspective view of the relay body according to Embodiment 1 of this utility model;

[0036] Figure 2 This is a perspective view of the accommodating member according to Embodiment 1 of this utility model;

[0037] Figure 3 This is a front view of the relay in Embodiment 1 of this utility model;

[0038] Figure 4 for Figure 3 Sectional view along the AA direction;

[0039] Figure 5 for Figure 3 Sectional view in the BB direction;

[0040] Figure 6 This is a top view of the relay according to Embodiment 1 of this utility model;

[0041] Figure 7 for Figure 6 Sectional view in the CC direction;

[0042] Figure 8 This is a perspective view of the relay concealed housing according to Embodiment 2 of this utility model;

[0043] Figure 9 This is a top view of the relay according to Embodiment 2 of this utility model;

[0044] Figure 10 for Figure 9 Sectional view in the DD direction;

[0045] Figure 11 for Figure 9 Sectional view in the EE direction;

[0046] Figure 12 for Figure 9 Sectional view in the FF direction;

[0047] Figure 13 This is a three-dimensional schematic diagram of the relay concealed housing in Embodiment 3 of this utility model. Figure 1 ;

[0048] Figure 14 This is a three-dimensional schematic diagram of the relay concealed housing in Embodiment 3 of this utility model. Figure 2 ;

[0049] Figure 15 This is a cross-sectional view of the relay of Embodiment 3 of this utility model.

[0050] Explanation of key figure labels:

[0051] 10. Receiving component; 11. Top wall; 12. First side wall; 13. Second side wall; 14. Second stop block; 15. Second connecting block; 16. Abutment block; 11. First channel; 17. Base; 18. Housing; 100. Relay body; 20. Magnetic circuit part; 21. Coil frame; 211. First stop wall; 212. Second stop wall; 213. Winding shaft; 214. Receiving cavity; 215. First connecting block; 216. First stop block; 22. Coil terminal; 23. Iron core; 24. Yoke; 25. First arm; 251. Second arm; 252. Armature; 26. Moving spring; 30. Connecting part; 31. Moving lead-out terminal; 311. First contact part; 32. Second contact part; 33. Bending part; 34. Stationary spring assembly; 40. Stationary spring; 41. Stationary lead-out terminal; 42. First wall; 43. Second wall; 44. Contact group; 50. Moving contact; 51. Stationary contact; 52. Detailed Implementation

[0052] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0053] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.

[0054] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing this utility model and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of this utility model.

[0055] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.

[0056] In the claims, description and accompanying drawings of this utility model, the terms "comprising", "having", and variations thereof are used to mean "including but not limited to".

[0057] In the claims and the description other than the embodiments, the terms "first direction," "second direction," and "third direction" only refer to a feature having one of the aforementioned directions being perpendicular to a feature having another direction, and do not require that they be implemented according to the "first direction," "second direction," and "third direction" described in the embodiments. In this embodiment, the first direction is perpendicular to both the second direction and the third direction, and the first direction, the second direction, and the third direction are orthogonal to each other. Exemplarily, the first direction can be divided into up and down, the second direction can be divided into left and right, and the third direction can be divided into front and back.

[0058] Example 1

[0059] See Figure 1-7 , Figure 1-7 A relay is shown, including a receiving member 10 and a relay body 100, the relay body 100 being at least partially received in the receiving member 10 and including a magnetic circuit portion 20 and a contact portion.

[0060] See Figure 2The accommodating member 10 has a box-like structure. The accommodating member 10 is open at its second end along the first direction. The accommodating member 10 accommodates the coil frame 21, coil 22 and contact group 50 (hereinafter referred to as the coil frame 21). In this embodiment, the accommodating member 10 is fixedly connected to the second baffle 212 of the coil frame 21 (hereinafter referred to as the coil frame 21) to form a cavity. The accommodating member 10 has a top wall 11 opposite to the first baffle 211 of the coil frame 21 (hereinafter referred to as the coil frame 21), two first side walls 12 opposite to each other along the second direction, and a second side wall 13. The two first side walls 12 are respectively located on both sides of the top wall 11 along the second direction, and the second side wall 13 is located on the first side of the top wall 11 along the third direction. The first side walls 12 are perpendicular to the second direction, and the second side walls 13 are perpendicular to the third direction. The top wall 11 of the accommodating member 10 has a second baffle 14 adapted to contact the two first baffles 216 (hereinafter referred to as the first baffles) to form a first channel 01. The second baffle 14 extends along the second direction to the two opposing side walls (first side walls 12) of the accommodating member 10. The first sidewall 12 also has a protruding second connecting block 15 adapted to engage with the first connecting block 215 described below. The second connecting block 15 is stepped along the third direction and extends along the third direction to both ends of the receiving member 10. The second sidewall 13 is close to the first side of the coil frame 21 described below along the third direction, and the second sidewall 13 has a protruding abutment block 16 adapted to abut with the first retaining wall 211 and / or the static spring assembly 40 described below.

[0061] See Figure 1 and Figure 4 The magnetic circuit section 20 includes a coil frame 21, a coil 22, a coil terminal 23, an iron core 24, a yoke 25, and an armature 26. The coil frame 21 includes a first baffle 211, a second baffle 212, and a winding shaft 213 located between the first baffle 211 and the second baffle 212. The winding shaft 213 extends along a first direction, and the first baffle 211 is located at the first end of the coil frame 21 along the first direction. Figure 4 (Upper middle end), the second retaining wall 212 is located at the second end of the coil frame 21 along the first direction, see [reference]. Figure 1 The first baffle 211 protrudes from a first side in the third direction near the coil frame 21, providing a receiving cavity 214 for accommodating the contact assembly 50 (hereinafter referred to as the contact assembly 50). Stepped first connecting blocks 215 are formed on both sides of the first baffle 211 in the second direction, with each first connecting block 215 forming a step in the third direction. The two first connecting blocks 215 overlap with the two second connecting blocks 15. The first baffle 211 also protrudes from both sides of the second contact portion 33 in the second direction, providing first stops 216 extending in the third direction. The two first stops 216 are adapted to cooperate with the second stops 14 to form a first channel 01 extending in the third direction, which communicates with the receiving cavity 214.

[0062] See also Figure 4The coil 22 is wound on the winding shaft 213 of the coil frame 21 with its axis extending along the first direction. The coil terminal 23 is electrically connected to the coil 22 and extends out of the lower end of the coil frame 21. The iron core 24 penetrates the coil frame 21 along the first direction. The yoke 25 is L-shaped and has a first arm 251 extending along the first direction and a second arm 252 extending along the third direction. The first arm 251 is located on the second side of the coil frame 21 along the third direction. Figure 4 The left side of the middle section is fixedly connected to the connecting part 31 of the moving spring 30 mentioned below, and the second arm 252 is at the second end of the coil frame 21 along the first direction ( Figure 4 The lower end) is fixedly connected to the iron core 24. The armature 26 is located at the first end of the coil frame 21 along the first direction ( Figure 4 The left end of the armature 26 abuts against the upper end of the first arm 251. The armature 26 moves to attract or move away from the upper end of the core 24 by swinging in a plane perpendicular to the second direction.

[0063] The contact portion includes at least one contact group 50, a stationary spring assembly 40, and a moving spring 30, see also Figure 1 and Figure 4 The contact group 50 is supported on the first baffle 211 and close to the first side of the coil frame 21 along the third direction. The contact group 50 includes a moving contact 51 and a stationary contact 52 respectively. The contact group 50 is located in the receiving cavity 214. In this embodiment, there are two contact groups 50. The two contact groups 50 are arranged at intervals along the second direction. The moving contact 51 swings relative to the stationary contact 52 in a plane perpendicular to the second direction and closes or opens with the stationary contact 52 through the motion component along the first direction.

[0064] In this embodiment, the relay is provided with a blocking structure. The blocking structure is close to the contact group 50 and is used to separate the space where the coil 22 and the contact group 50 are located, so as to suppress airflow from the coil 22 to the contact group 50. At least a portion of the stationary spring assembly 40 is configured to form part of the blocking structure. As described above, the first barrier 211 is adapted to cooperate with the receiving member 10 to form part of the blocking structure. The first barrier 211 cooperates with the receiving member 10 on both sides along the first direction to form part of the blocking structure. Wherein, the first barrier 211 overlaps or abuts with the receiving member 10 to form part of the blocking structure, see [reference]. Figure 6-7 Specifically, the first connecting block 215 and the second connecting block 15 cooperate to form part of the blocking structure. In this embodiment, preferably, the second baffle 212 also cooperates with the receiving member 10 on both sides along the first direction to form part of the blocking structure, thereby making it difficult for the airflow of the coil 22 on both sides along the second direction to migrate directly to the space where the contact group 50 is located along the first direction. In this embodiment, the blocking structure is located on both sides of the coil frame 21 along the second direction and on the first side along the first direction; the following will describe how at least part of the stationary spring assembly 40 forms part of the blocking structure.

[0065] The stationary spring assembly 40 is fixedly connected to and secured to the stationary contact 52 on the coil frame 21, see [link / reference]. Figure 1 and Figure 4 The stationary spring assembly 40 is at least partially located between the first stop wall 211 and the second stop wall 212. The stationary spring assembly 40 is close to the first side of the coil frame 21 along a third direction and at least partially overlaps with the projection of the coil 22 onto a plane perpendicular to the third direction. In this embodiment, the stationary spring assembly 40 is at least in contact with the first stop wall 211 of the coil frame 21 to form part of the blocking structure. Preferably, in this embodiment, the stationary spring assembly 40 is in contact with both the first stop wall 211 and the second stop wall 212 of the coil frame 21. See also... Figure 1 The stationary spring assembly 40 includes two stationary springs 41 spaced apart along a second direction. The bottom end of each stationary spring 41 extends out of the second retaining wall 212 to form a stationary lead-out terminal 42, and the upper end of each stationary spring 41 extends into the receiving cavity 214 and is fixedly connected to the stationary contact 52. The moving lead-out terminal 311 of the moving spring 30 and the stationary lead-out terminal 42 of the stationary spring 41 form the lead-out terminals of the contact portion. It should be understood that the stationary spring assembly 40 may also have only one stationary spring 41.

[0066] See also Figure 1 and Figure 4 The moving spring 30 is generally L-shaped and has a connecting part 31, a first contact part 32, a second contact part 33, and a bending part 34 that are connected to each other. The connecting part 31 extends along a first direction, and the first contact part 32 and the second contact part 33 both extend along a third direction. The connecting part 31 is located on the second side of the coil frame 21 along the third direction. Figure 4 The connecting portion 31 (left side) is fixed to the first arm 251 of the yoke 25 and adheres to the outer surface of the first arm 251. The lower end of the connecting portion 31 penetrates the second baffle 212 to form a moving lead-out terminal 311. The first contact portion 32 is located at the first end of the coil frame 21 along the first direction and is fixed to the moving contact 51. The second contact portion 33 is located at the first end of the coil frame 21 along the first direction and is fixed to the armature 26 and adheres to the upper surface of the armature 26. The bending portion 34 connects the upper end of the connecting portion 31 and the left end of the second contact portion 33 and bends upward. The armature 26 is adapted to drive the first contact portion 32 to swing so that the moving contact 51 and the stationary contact 52 (hereinafter referred to as the stationary contact 52) ​​close or open along the first direction. The first contact portion 32 penetrates the first channel 01, which is located between the second contact portion 33 and the contact group 50 along the third direction.

[0067] In this embodiment, the blocking structure is partially formed by the relay body 100 and the receiving member 10, and partially formed independently by the relay body 100. The coil frame 21 blocks the airflow in the axial end region of the coil 22 by cooperating with the first side wall 12 on both sides along the second direction through the first baffle 211 and the second baffle 212 respectively. The static spring assembly 40 blocks the airflow in the radial peripheral region of the coil 22 by cooperating with the abutment block 16 of the coil frame 21 and the second side wall 13. The blocking structure separates the space where the coil 22 and the contact group 50 are located. It should be understood that in other embodiments, the airflow in the axial end region of the coil 22 can also be blocked by only the first baffle 211 cooperating with the first side wall 12 on both sides along the second direction.

[0068] However, it should be understood that in other embodiments, the blocking structure may be formed entirely by the relay body 100 independently, or it may be formed entirely by the relay body 100 and the receiving member 10 in combination.

[0069] In this embodiment, the blocking structure is close to the contact group 50 and is used to separate the coil 22 and the contact group 50 to suppress the airflow from the coil 22 to the contact group 50. Here, suppression means significantly reducing, hindering, limiting or reducing the rate or flow of airflow migration; separation means physical or spatial separation of the space where the coil 22 and the contact group 50 are located. The blocking structure is close to the contact group 50, which can physically separate the water vapor in the corresponding part of the blocking structure, making it difficult for the moisture generated by the coil 22 to migrate directly to the contact group 50 at the location corresponding to the blocking structure. This prolongs the moisture path, so that it only reaches the vicinity of the contact group 50 after the contacts are made to conduct, or causes the moisture to migrate in the direction away from the blocking structure. Compared with the prior art, this reduces the moisture content around the contact group 50, so that water vapor is less likely to undergo phase change condensation on the contact surface at a lower temperature before the contacts are made to conduct, and the contacts can conduct effectively. At least a portion of the retaining spring assembly 40 is configured as part of the barrier structure, reusing existing relay components as a barrier, eliminating the need for additional partition material. Since the retaining spring assembly 40 itself requires assembly, the barrier can be achieved simply by adjusting its state or position. Furthermore, as a metal component, the metal surface of the retaining spring assembly 40 has a certain condensation effect on the airflow flowing around it. This allows for the partial barrier formed by the retaining spring assembly 40 to condense moisture, further reducing the moisture content reaching the contact group 50. Compared to setting up a separate condensation component, using the retaining spring assembly to promote airflow condensation makes full use of the relay's own structure, requires minimal modification to the relay, and is cost-effective.

[0070] In this embodiment, the first baffle 211 is adapted to cooperate with the receiving member 10 to form part of the blocking structure, making full use of the structure of the coil frame 21 and the receiving member 10. The contact group 50 is close to the first baffle 211, which can suppress airflow from the coil 22 directly to the contact group 50 via the first baffle 211 in the axial region. The stationary spring assembly 40 is at least partially located between the first baffle 211 and the second baffle 212. The stationary spring assembly 40 can suppress airflow from the coil 22 to the contact group 50 via the stationary spring assembly 40 in the radial peripheral region of the coil 22. Compared to a scheme where the blocking structure is entirely formed independently by the relay body 100, the above arrangement makes full use of the structure of the coil frame 21 and the receiving member 10, reducing costs. Furthermore, the first baffle 211, adapted to cooperate with the receiving member 10, can also position the coil frame 21, improving its stability and thus enhancing the stability of the relay operation.

[0071] In this embodiment, the blocking structures are located on both sides of the first baffle 211 along the second direction and on the first side along the first direction, respectively, so that the three sides near the contact group 50 are blocked. The three-sided blocking can extend the path of water vapor to the contact group 50, so that it only reaches the vicinity of the contact group 50 after the contacts are made and conducting, thereby inhibiting the flow of water vapor into the vicinity of the contact group 50, ensuring contact conduction, and even isolating the space of the contact group 50 from the space of the coil 22, preventing water vapor from entering the space of the contact group 50. In addition, the third direction is generally the length direction of the relay, and the second direction is generally the width direction of the relay. The blocking structures are located on both sides of the first baffle 211 along the second direction, which can increase the blocking area for airflow and limit the coil frame 21, improve the stability of the coil frame 21, and thus improve the stability of the relay operation.

[0072] In this embodiment, the stationary spring assembly 40 is in contact with at least the first barrier 211 of the coil frame 21. Combined with the fact that the stationary spring assembly 40 is located on the first side of the coil 22 along the third direction, closer to the contact group 50, it is more conducive to forming a barrier near the contact group 50, thereby more conducive to reducing the moisture content around the contact group 50.

[0073] In this embodiment, the abutment block 16 is more conducive to suppressing water vapor from the coil frame 21 along the first side in the third direction to the contact group 50, thereby further reducing the water vapor content around the contact group 50. In addition, the abutment block 16 can also increase the strength of the second sidewall 13.

[0074] In this embodiment, the stationary spring assembly 40 is in contact with both the first baffle 211 and the second baffle 212, making full use of the structure of the stationary spring assembly 40 and increasing the blocking area, further suppressing the airflow generated by the coil 22 from the first side of the coil frame 21 in the third direction to the contact group 50 through the stationary spring assembly 40; the setting of the first channel 01 can reduce the flow area of ​​the airflow from the first end of the coil frame 21 in the first direction to the contact group 50 in the third direction, further preventing water vapor from migrating to the contact group 50. In addition, the first channel 01 can also limit the first contact portion 32 of the moving spring 30, that is, limit the movement of the moving spring 30 to a certain extent, ensuring that the moving spring 30 moves within a preset range, avoiding interference between the moving spring 30 and the inner wall of the receiving member 10, and improving the stability of the relay operation.

[0075] In this embodiment, the first stop 216 and the second stop 14 cooperate to form the first channel 01, which is simple to process and easy to assemble. The second stop 14 can limit the swing amplitude of the moving spring 30 and improve the strength of the receiving member 10. The two first stops 216 are respectively located on both sides of the coil frame 21 in the second direction. The second stop 14 contacts the two first stops 216 and extends along the second direction to the two opposite side walls of the receiving member 10. This not only increases the blocking area, but also makes the coil frame 21 bear force evenly on both sides along the second direction, making it less prone to tilting, and further improving the stability of the relay during operation.

[0076] In this embodiment, the arrangement of the receiving cavity 214 can reduce the absolute content of moisture in the receiving cavity 214 by reducing the space around the contact group 50, thereby reducing the probability of contact icing and improving the possibility of contact contact and conduction. Moreover, since the receiving cavity 214 is connected to the first channel 01, the airflow has multiple levels of obstruction as it flows from the first end of the coil frame 21 along the first direction to the contact group 50 along the third direction, thereby reducing the water vapor flow speed and making it more conducive to the precipitation of water vapor before reaching the contact group 50, thus greatly reducing the water vapor content around the contact group 50.

[0077] In this embodiment, the first barrier 211 overlaps or abuts with the receiving member 10, which can form a more tightly fitted blocking structure on the side near the contact group 50, further preventing airflow from flowing from the gap between the first barrier 211 and the receiving member 10 to the contact group 50.

[0078] In this embodiment, the stepped first connecting block 215 and the second connecting block 15 that cooperate with the first connecting block 215 have a simpler structure and are easier to process and assemble. The second connecting block 15 extends to both ends of the receiving member 10 along a third direction, which is generally the length direction of the relay. The above arrangement further makes the blocking structure on both sides of the first baffle 211 along the second direction have a larger blocking area, further suppressing the airflow migration to the contact group 50, and increasing the strength of the receiving member 10. It further makes the receiving member 10 and the first baffle 211 form a more balanced force structure along the second direction, avoiding the warping deformation of the coil frame 21 caused by the winding tension of the coil 22. The first connecting block 215 forms a step along the third direction, which is more conducive to reducing the length of the relay along the second direction than forming a step along the second direction.

[0079] In this embodiment, both the yoke 25 and the moving spring 30 are metal structures, which can promote airflow condensation, thereby further reducing the water vapor content around the contact group 50.

[0080] Example 2

[0081] Example 2 has a structure that is basically the same as that of Example 1, except that, see [link to example]. Figures 8-12 The receiving member 10 includes a base 17 and a housing 18 fixedly connected to each other. The base 17 and the housing 18 are fixedly connected to form a cavity. The base 17 is located at the second end of the coil frame 21 along a first direction. The lead-out terminals and coil terminals 23 of the contact portion both extend downward from the base 17. Furthermore, the stationary spring assembly 40 has a first wall 43 perpendicular to a third direction, and two second walls 44 opposite to each other along a second direction. Both the first wall 43 and the second wall 44 contact the first barrier wall 211 and the second barrier wall 212 to form part of the blocking structure. The first wall 43 at least partially overlaps with the projection of the coil 22 onto a projection plane perpendicular to the third direction. The stationary spring assembly 40 includes two stationary springs 41 arranged along the second direction, each stationary spring 41 having a first wall 43 and a second wall 44 perpendicular to each other. It should be understood that in other embodiments, the first wall 43 and the second wall 44 may only contact the first barrier wall 211 to form part of the blocking structure.

[0082] In this embodiment, the first wall 43 and the second wall 44 are both in contact with the first baffle 211 and the second baffle 212 to form part of the blocking structure, so that the static spring assembly forms a semi-enclosed structure on the side of the coil 22 winding near the contact group 50, which is more conducive to forming a barrier near the contact group 50, and is also more conducive to water vapor condensing and precipitating on the surface of the static spring assembly 40 before the contact is made conductive, thereby greatly ensuring that the contact can make conductive.

[0083] Example 3

[0084] Example 3 has a structure that is basically the same as that of Example 1, except that, see [link to example]. Figure 13-15 The receiving member 10 includes a base 17 and a housing 18 fixedly connected to each other. The base 17 is located at one end of the coil frame 21 along the second direction and contacts both the first barrier wall 211 and the second barrier wall 212. The ends of the first barrier wall 211 and the second barrier wall 212 away from the base 17 along the second direction contact the housing 18, so that both ends of the coil frame 21 along the second direction respectively cooperate with the receiving member 10 to form part of the blocking structure. The lead-out terminals and coil terminals 23 of the contact portion extend out of the base 17. In addition, in this embodiment, the first barrier wall 211 is not provided with a receiving cavity 214, a first connecting block 215, or a first stop block 216. The receiving member 10 is also not provided with a second connecting block 15, a second stop block 14, or an abutment block 16. The stationary spring assembly 40 includes only one stationary spring 41 and only contacts the first barrier wall 211.

[0085] In this embodiment, the base 17 is located at one end of the coil frame 21 along the second direction and is in contact with both the first baffle 211 and the second baffle 212. The ends of the first baffle 211 and the second baffle 212 away from the base 17 along the second direction are in contact with the outer shell 18. This makes the installation of the coil frame 21 with the receiving member 10 along both sides of the second direction simpler. When the outer shell 18 is inserted along the second direction, compared with the structure of Embodiment 1, the yoke 25, the stationary spring assembly 40 and the coil frame 21 have basically no resistance to the outer shell 18. The yoke 25 and the moving spring 30 are both metal structures, which can promote airflow condensation, thereby further reducing the moisture content around the contact group 50. The yoke 25 and the moving spring 30 are both metal structures, which can promote airflow condensation.

[0086] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.

Claims

1. A relay, comprising The relay body (100) includes a magnetic circuit portion (20) and a contact portion; - The magnetic circuit portion (20) includes a coil frame (21) and a coil (22) wound on the coil frame (21); - The contact portion includes at least one contact group (50) and a stationary spring assembly (40). The contact group (50) includes a moving contact (51) and a stationary contact (52) respectively. The stationary spring assembly (40) is fixed to the stationary contact (52) and fixed to the coil frame (21). A receiving member (10) that receives the coil frame (21), the coil (22), and the contact assembly (50); characterized in that, The relay is provided with a blocking structure that is close to the contact group (50) and is used to separate the space where the coil (22) and the contact group (50) are located to suppress airflow from the coil (22) to the contact group (50), and at least a portion of the stationary spring assembly (40) is configured to form part of the blocking structure.

2. A relay according to claim 1, characterised in that The coil frame (21) is provided with a first baffle (211) and a second baffle (212) at its first and second ends along the axis of the coil (22), respectively. The contact group (50) is close to the first baffle (211), and the first baffle (211) is adapted to cooperate with the receiving member (10) to form part of the blocking structure. The static spring assembly (40) is at least partially located between the first baffle (211) and the second baffle (212).

3. A relay according to claim 2, wherein the magnetic field generated by the coil is arranged to be substantially uniform across the face of the armature. The axis of the coil (22) extends along a first direction, the contact group (50) is supported on a first barrier wall (211) and close to the first side of the coil frame (21) along a third direction, the moving contact (51) is adapted to swing relative to the stationary contact (52) in a plane perpendicular to a second direction and to close or open with the stationary contact (52) by means of a motion component along the first direction; the blocking structures are located on both sides of the first barrier wall (211) along the second direction and on the first side along the first direction; the first direction, the second direction and the third direction are orthogonal to each other.

4. A relay according to claim 3, wherein the magnetic field generated by the coil is arranged to be substantially uniform across the face of the armature. The stationary spring assembly (40) is close to the first side of the coil frame (21) along the third direction and at least partially overlaps with the projection of the coil (22) on a plane perpendicular to the third direction. The stationary spring assembly (40) is in contact with at least the first retaining wall (211) of the coil frame (21) to form part of the blocking structure.

5. A relay according to claim 4, wherein the magnetic circuit is formed by a plurality of magnetic bodies, and the magnetic bodies are arranged in a ring shape. The receiving member (10) has a second sidewall (13) on a first side in a third direction near the coil frame (21), and the second sidewall (13) has a protruding abutment block (16) adapted to abut against the first retaining wall (211) and / or the static spring assembly (40) of the coil frame (21).

6. A relay according to claim 5, wherein the magnetic field generated by the coil is arranged to be substantially uniform across the face of the armature. The stationary spring assembly (40) is in contact with both the first retaining wall (211) and the second retaining wall (212) of the coil frame (21); the magnetic circuit portion (20) also includes an armature (26) located at the first end of the coil frame (21) along a first direction; the contact portion also includes a moving spring (30), which has a first contact portion (32) fixedly connected to the moving contact (51) and a second contact portion (33) fixedly connected to the armature (26); the receiving member (10) and the first retaining wall (211) also cooperate to form a first channel (01) extending along a third direction and through which the first contact portion (32) passes; the first channel (01) is located between the second contact portion (33) and the contact group (50) along a third direction.

7. A relay according to claim 6, wherein the relay is a latching relay. The first retaining wall (211) has a first stop (216) protruding from both sides of the second contact portion (33) along the second direction, and the receiving member (10) has a second stop (14) adapted to contact both first stop (216) to form the first channel (01). The second stop (14) extends along the second direction to the two opposite sidewalls of the receiving member (10).

8. A relay according to claim 7, wherein the relay is a latching relay. The first retaining wall (211) is also provided with a receiving cavity (214) for accommodating the contact group (50), and the receiving cavity (214) is connected to the first channel (01).

9. A relay according to claim 3, wherein the magnetic circuit is formed by a magnetic core and a magnetic yoke, and the magnetic core is disposed in the magnetic yoke. The first retaining wall (211) overlaps or abuts against the receiving member (10) to form part of the barrier structure.

10. A relay as described in claim 9, characterized in that, The first retaining wall (211) is provided with first connecting blocks (215) on both sides along the second direction. The first connecting blocks (215) form steps along the third direction. The receiving member (10) is provided with second connecting blocks (15) that overlap with the two first connecting blocks (215). The second connecting blocks (15) extend along the third direction to both ends of the receiving member (10).

11. A relay as described in claim 3 or 4, characterized in that, The stationary spring assembly (40) is provided with a first wall (43) perpendicular to a third direction, and the stationary spring assembly (40) is also provided with two second walls (44) opposite to each other along a second direction. The first wall (43) and the second wall (44) are in contact with the first barrier wall (211) and the second barrier wall (212) to form part of the blocking structure. The projection of the first wall (43) on the projection plane of the coil (22) perpendicular to the third direction at least partially overlaps.

12. A relay as described in any one of claims 6-10, characterized in that, The receiving member (10) engages with the second baffle (212) to form a cavity suitable for receiving the coil (22) and the contact assembly (50); the magnetic circuit portion (20) further includes an iron core (24) and a yoke (25), the iron core (24) penetrates the coil (22) along a first direction, the yoke (25) is provided with a first arm (251) extending along the first direction and a second arm (252) extending along a third direction, the first arm (251) is fixed to the second side of the coil frame (21) along the third direction and fixed to the moving spring (30); the second arm (252) is fixed to the iron core (24) at the second end of the coil frame (21) along the first direction.

13. A relay as described in claim 4, characterized in that, The receiving member (10) includes a base (17) and a housing (18) fixedly connected to each other. The base (17) is located at one end of the coil frame (21) along the second direction and is in contact with both the first barrier wall (211) and the second barrier wall (212). The ends of the first barrier wall (211) and the second barrier wall (212) away from the base (17) along the second direction are in contact with the housing (18). The magnetic circuit part (20) also includes an iron core (24), an armature (26) and a yoke (25), and the contact part also includes a moving spring (30) fixedly connected to the moving contact (51); The iron core (24) passes through the coil (22) along the first direction, and the armature (26) is located at the first end of the coil frame (21) along the first direction and is fixedly connected to the moving spring (30); the yoke (25) is provided with a first arm (251) extending along the first direction and a second arm (252) extending along the third direction, the first arm (251) is located on the second side of the coil frame (21) along the third direction and is fixedly connected to the moving spring (30); the second arm (252) is fixedly connected to the iron core (24) at the second end of the coil frame (21) along the first direction.

Images