A relay

Abstract

The utility model discloses a relay, including relay body and accommodating piece, and the relay body includes magnetic circuit part and contact part, and the magnetic circuit part includes coil, and the contact part includes at least one contact group, and the coil and contact group are all accommodated in accommodating piece, and at least one condensation passage for making the airflow condensation that passes through is equipped in at least one airflow passway to contact group. The utility model can inhibit the contact icing before contact contact.

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 the contacts make contact.

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

[0006] Technical solution one provides a relay, including a relay body and a housing. The relay body includes a magnetic circuit portion and a contact portion. The magnetic circuit portion includes a coil. The contact portion includes at least one contact group. The coil and the contact group are both housed in the housing. At least one airflow passage leading to the contact group is provided with at least one condensation channel for condensing the passing airflow.

[0007] Technical Solution 2 based on Technical Solution 1: The relay is provided with a cooling component, the cooling component is provided with a condensation interface, and the condensation interface forms the channel wall of the condensation channel.

[0008] Technical solution three based on technical solution two: The cooling component is a cooling coating disposed on the inner surface of the accommodating component.

[0009] Technical Solution 4 based on Technical Solution 3: The condensation interface of the cooling component is at least partially spaced from the outer surface of the relay body to cooperate with it to form a condensation channel.

[0010] Technical solution five based on technical solution four: the magnetic circuit part further includes an armature and a yoke, the contact part includes a moving spring, and the condensation interface of the cooling element is at least partially spaced from the outer surface of at least one of the moving spring, armature and yoke.

[0011] Technical Solution Six based on Technical Solution Five: The magnetic circuit portion includes a coil frame, the coil is wound on the coil frame and its axis extends along a first direction, the contact group is located at a first end of the coil frame along the first direction and close to a first side of the coil frame along a third direction, the contact group includes correspondingly arranged moving contacts and stationary contacts, the moving contacts swing relative to the stationary contacts in a plane perpendicular to a second direction and close or open with the stationary contacts through a motion component along the first direction; the condensation channel extends at least partially along the first direction and is located on a second side of the coil frame along a third direction, the condensation channel also extends at least partially along a third direction and is located at a first end of the coil frame along the first direction; the first direction, the second direction, and the third direction are orthogonal to each other.

[0012] Technical solution seven based on technical solution six: The accommodating member is provided with a first wall opposite to the first end of the coil frame; the first wall is provided with an airflow reversing structure protruding from a second side near the coil frame along a third direction, the airflow reversing structure being used to increase the contact area between the airflow and the first wall.

[0013] Technical solution eight based on technical solution seven: The magnetic circuit part further includes an iron core; the moving spring is provided with a contact part and a connecting part; the iron core passes through the coil frame along a first direction, the armature is located at the first end of the coil frame along the first direction and is fixedly connected to the contact part, the contact part is fixedly connected to the moving contact; 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 fixedly connected to the connecting part on the second side of the coil frame along the third direction, and the second arm is fixedly connected to the iron core at the second end of the coil frame along the first direction; the condensation interface avoidance contact group of the cooling component is spaced apart from the moving spring, the first arm and the armature.

[0014] Technical Solution Nine based on Technical Solution One: The condensation channel has a protruding airflow reversing structure on its channel wall, which is used to increase the contact area between the airflow and the receiving component; the airflow reversing structure is at least partially spaced from the outer surface of the relay body to cooperate with it to form a condensation channel.

[0015] Technical solution ten based on technical solution nine: The magnetic circuit part is further provided with a coil frame, the coil is wound on the coil frame and the axis extends along the first direction, the contact group is located at the first end of the coil frame along the first direction and close to the first side of the coil frame along the third direction, the contact group includes moving contacts and stationary contacts arranged corresponding to each other, the moving contacts swing relative to the stationary contacts in a plane perpendicular to the second direction and close or open with the stationary contacts through the motion component along the first direction; the first direction, the second direction and the third direction are orthogonal; the receiving member is provided with a first wall opposite to the first end of the coil frame, and the airflow reversing structure protrudes from the first wall.

[0016] Technical solution eleven, based on any one of technical solutions seven, eight or ten: The airflow reversing structure (70) includes at least two condenser channels spaced apart along a third direction and extending along a second direction.

[0017] Technical Solution 11 Technical Solution 12: The airflow reversing structure includes a plurality of first protrusions extending along a second direction and spaced apart along a third direction on the first wall along a first direction. The condenser channel is formed between the first protrusions that are opposite to each other. The projections of adjacent first protrusions along the third direction on the projection plane perpendicular to the third direction at least partially overlap and at least partially offset by 50%.

[0018] Technical Solution 13 of Technical Solution 10: The magnetic circuit portion includes an iron core, an armature, and a yoke; the contact portion includes a moving spring, which has a contact portion and a connecting portion; the iron core extends through the coil frame along a first direction; the armature is located at the first end of the coil frame along the first direction and is fixedly connected to the contact portion; the contact portion is fixedly connected to the moving contact; the yoke has a first arm extending along the first direction and a second arm extending along a third direction; the first arm is fixedly connected to the connecting portion on the second side of the coil frame along the third direction; the second arm is fixedly connected to the iron core at the second end of the coil frame along the first direction; the armature is adapted to drive the contact portion to swing so that the moving contact and the stationary contact close or open along the first direction; the channel wall of the condensation channel is also formed on the portion of the contact portion that avoids the contact group and on the surface of the armature facing the first wall; the airflow reversing structure is close to the first arm of the yoke along the third direction.

[0019] Technical solution fourteen of any one of technical solutions six to eight, ten or twelve: The contact portion further includes a stationary spring assembly, the stationary spring assembly is located on the first side of the coil frame along the third direction, the stationary spring assembly is fixed to the stationary contact and cooperates with the coil frame or simultaneously cooperates with the coil frame and the receiving member to form a blocking structure, and the stationary spring assembly and the projection of the coil on the projection plane perpendicular to the third direction at least partially overlap.

[0020] Technical Solution 15: The magnetic circuit part includes a coil frame, the coil is wound on the coil frame and the axis extends along a first direction, the contact group is located at the first end of the coil frame along the first direction; the relay is provided with a cooling element, the cooling element is located on the radial outside of the coil and contacts both ends of the coil frame along the first direction; the cooling element is provided with several spaced-apart condensation channels.

[0021] Technical Solution 16 of Technical Solution 15: The contact group includes correspondingly arranged moving contacts and stationary contacts. The moving contacts swing relative to the stationary contacts on a plane perpendicular to the second direction and close or open with the stationary contacts along the first direction. The projections of the cooling element and the coil on a projection plane perpendicular to the third direction at least partially overlap. Each condensation channel is arranged at intervals along the first direction and passes through along the third direction. The first direction, the second direction, and the third direction are orthogonal to each other.

[0022] Technical Solution 17 of Technical Solution 16: The magnetic circuit portion includes an iron core, a yoke, and an armature; the contact portion includes a moving spring, which has a contact portion and a connecting portion; the contact group is located near the first side of the coil frame along a third direction; the iron core extends through the coil frame along a first direction; the armature is located at the first end of the coil frame along the first direction and is fixedly connected to the contact portion; the contact portion is fixedly connected to the moving contact; the yoke has a first arm extending along the first direction and a second arm extending along a third direction; the first arm is fixedly connected to the connecting portion at the second side of the coil frame along the third direction; the second arm is fixedly connected to the iron core at the second end of the coil frame along the first direction; the cooling element is located on the first side of the coil frame along the third direction; the lead-out terminals of the contact portion and the coil terminals of the magnetic circuit portion are both located at the first end of the coil frame along the first direction; the contact portion includes a stationary spring assembly, which is fixedly connected to the stationary contact and located on at least one side of the contact group along a second direction.

[0023] Technical solution eighteen based on technical solution one: The magnetic circuit part includes a coil frame, an iron core, a yoke, and an armature; the contact part includes a moving spring, which has a contact portion and a connecting portion; the contact group includes moving contacts and stationary contacts that are correspondingly arranged to each other; the coil is wound on the coil frame and its axis extends along a first direction; the armature and the contact group are both located at a first end of the coil frame along the first direction, and the contact group is also located on a first side of the coil frame along a third direction; the armature is fixedly connected to the contact portion, and the contact portion is fixedly connected to the moving contact; the yoke has a first arm extending along the first direction and an arm extending along a third direction. The second arm is fixed to the connecting part on the second side of the coil frame along the third direction, and the second arm is fixed to the iron core at the second end of the coil frame along the first direction; the armature is adapted to drive the contact part to swing so that the moving contact swings relative to the stationary contact in a plane perpendicular to the second direction and closes or opens with the stationary contact along the first direction; the two sides of the coil frame along the second direction respectively cooperate with the receiving member to form a blocking structure, and the first direction, the second direction and the third direction are orthogonal to each other; the condensation channel is provided at the first end of the coil frame along the first direction and / or on the first side or the second side along the third direction.

[0024] 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:

[0025] 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, 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 will undergo 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.

[0026] In technical solution one, the condensation channel refers to a specific structural channel installed in the airflow path leading to the contact group within the relay. This channel utilizes its own structure (e.g., increasing the contact area with the airflow), material properties, and / or heat exchange with the environment to lower the temperature of the airflow flowing through it below the dew point, thereby promoting the condensation of water vapor contained in the airflow. Therefore, the condensation channel can condense water vapor in the airflow in advance, reducing the humidity of the air entering the contact area, preventing direct condensation and ice formation on the contact surface before contact, ensuring contact continuity, and avoiding problems such as decreased insulation between contacts, short circuits, oxidation corrosion, and abnormal arcing caused by condensation, thus improving the reliability and lifespan of the relay.

[0027] In technical solution two, the airflow is condensed by a cooling component. In practical applications, materials with better thermal conductivity or components with better heat exchange with the environment can be selected as cooling components, which is more conducive to keeping the cooling components at a lower temperature to promote the condensation of airflow in the condensation channel and improve condensation efficiency.

[0028] In technical solution three, since the housing is easy to exchange heat with the outside environment, the housing has a lower temperature, and the airflow is easy to condense on the inner wall of the housing. The cooling element is a cooling coating on the inner surface of the housing, which is more conducive to the formation of a "heat dissipation-condensation" composite interface between the cooling coating and the housing, improving the consistency of heat exchange, reducing the risk of local high humidity, and making it easier to keep the cooling element at a lower temperature to promote the condensation of airflow on the condensation interface of the cooling element. In addition, the cooling coating can be integrated with the housing, eliminating the need for an additional cooling element, which is more conducive to reducing the size of the relay and reducing the cost of modifying the relay.

[0029] In technical solution four, the structure of the relay body (such as yoke and armature) is fully utilized to form a condensation channel with the condensation interface of the cooling component, which can guide the airflow to condense on the condensation interface. When the part of the outer surface of the relay body that forms the condensation channel is made of metal, it can also promote the condensation of the airflow on the outer surface of the relay.

[0030] In technical solution five, the armature, yoke, and moving spring are all made of metal. The condensation interface of the cooling component is at least partially spaced from the outer surface of at least one of the moving spring, armature, and yoke. This can promote the condensation of airflow on at least one of the moving spring, armature, and yoke, thereby increasing the condensation area, increasing the condensation efficiency and the amount of water vapor in the condensed airflow, and reducing the air humidity in the contact area.

[0031] In technical solution six, the condensation channel extends at least partially along the first direction and is located on the second side of the coil frame along the third direction. The condensation channel also extends at least partially along the third direction and is located at the first end of the coil frame along the first direction. The path of the condensation channel is longer, and the structural arrangement of the condensation channel allows the airflow to move away from the contact group in the first direction section of the condensation channel and achieve preliminary cooling and condensation. Then, it undergoes secondary cooling and condensation in the third direction section. Secondary dehumidification is performed before the airflow finally enters the contact area, intercepting residual water vapor. This is more conducive to promoting the condensation of the airflow before it migrates to the contact group, reducing the water vapor content around the contact group.

[0032] In technical solution seven, the airflow is intercepted by the airflow reversing structure as it flows from the coil frame along the second side of the third direction to the contact group, and condenses on the first wall of the housing. This further promotes the condensation of the airflow before it migrates to the contact group. This arrangement also makes full use of the space between the first wall of the housing and the first end of the relay body in the first direction without increasing the height of the relay in the first direction. If the airflow reversing structure were placed on the side wall of the housing, the space between the side wall of the housing and the relay body would be small, requiring an increase in the size of the relay. Therefore, the airflow reversing structure protruding from the first wall can make full use of the operating space of the moving spring and armature, which is more conducive to reducing the size of the relay. Since the condensation channel also extends at least partially along the third direction and is located at the first end of the coil frame along the first direction, a cooling element is provided on the first wall. That is to say, as the airflow travels along the condensation channel to the contact group, the airflow reversing structure forces the airflow to slow down and approach the cooling element. The cooling element drives a phase change through temperature difference. The combination of these two factors greatly increases the water vapor interception efficiency, achieving rapid water vapor interception and resulting in higher condensation efficiency of the airflow in the condensation channel.

[0033] In technical solution eight, the condensation interface of the cooling component avoids the contact group, the moving spring, the first arm and the armature, which are all spaced apart and opposite to each other, so that the condensation channel is located on the second side of the coil frame along the third direction and the first end along the first direction, ensuring that the airflow is fully condensed in the condensation channel before reaching the contact group.

[0034] In technical solution nine, because the housing easily exchanges heat with the outside environment and has a low temperature, the condensation channel has a protruding airflow reversing structure on its wall. This structure increases the contact area between the airflow and the housing, promoting the condensation of water vapor on the inner wall of the housing. The airflow reversing structure is at least partially spaced from the outer surface of the relay body to form a condensation channel, fully utilizing the structure of the relay body (such as the yoke and armature). It guides the airflow through the reversing structure, thereby promoting the condensation of water vapor on the inner wall of the housing. When the portion of the outer surface of the relay body that forms the condensation channel is made of metal, it also promotes the condensation of airflow on the outer surface of the relay.

[0035] In technical solution ten, the first wall avoids the contact group and the outer surface of the relay, forming a condensation channel. The airflow reversing structure protrudes from the first wall. This arrangement intercepts the airflow as it flows towards the contact group, causing it to condense on the first wall of the housing. This promotes condensation of the airflow before it reaches the contact group. This arrangement also makes full use of the space between the first wall of the housing and the first end of the relay body in the first direction, without increasing the height of the relay in the first direction. If the airflow reversing structure were placed on the side wall of the housing, the space between the side wall of the housing and the relay body would be small, requiring an increase in the size of the relay. Therefore, the airflow reversing structure protruding from the first wall makes full use of the operating space of the moving spring and armature, which is more conducive to reducing the size of the relay.

[0036] In technical solution eleven, the airflow reversing structure includes at least two condenser channels spaced apart along a third direction and extending along a second direction, which can increase the condensation area, thereby increasing the condensation efficiency and the amount of water vapor in the condensation airflow, and reducing the air humidity in the contact area.

[0037] In technical solution twelve, the airflow reversing structure forms a labyrinthine flow channel, which forces the airflow to turn multiple times, extending the airflow path and thus increasing the contact area between the airflow and the first wall of the receiving component. The projections of adjacent first protrusions along the third direction on the projection plane perpendicular to the third direction are at least 50% offset. The greater the offset between adjacent first protrusions compared to overlapping portions, the better it avoids excessive resistance from the airflow reversing structure, which would cause the airflow to flow primarily along the gap between the free end of the first protrusion and the moving spring, rather than through the gap between adjacent first protrusions. In other words, it is more conducive to the airflow passing through the airflow reversing structure, increasing the contact area between the airflow and the first wall. Furthermore, the airflow reversing structure also increases the structural strength of the first wall.

[0038] In technical solution thirteen, the channel wall of the condensation channel is also formed on the part of the contact portion that avoids the contact group and on the surface of the armature facing the first wall. Both the armature and the moving spring are made of metal, which can promote the condensation of airflow on the contact portion of the armature and the moving spring, thereby trapping more water vapor.

[0039] In technical solution fourteen, the stationary spring assembly, as a metal component, forms a physical barrier between the contact group and the coil by structurally cooperating with the coil frame or simultaneously with the coil frame and the housing. This forces hot and humid air to bypass the coil and flow into a pre-designed condensation channel, thereby promoting airflow condensation. Because the metal surface of the stationary spring assembly has a low thermal conductivity temperature, the airflow flowing around it can be cooled, and water vapor condenses and precipitates on the surface of the stationary spring assembly. Therefore, the stationary spring assembly can condense water vapor before it reaches the contact group, reducing the air humidity in the contact area.

[0040] In technical solution fifteen, the cooling element is located radially outside the coil and contacts both ends of the coil frame along the first direction. The cooling element can trap water vapor diffused radially from the coil and promote the condensation of water vapor on the cooling element. Furthermore, the separately designed cooling element is easier to manufacture and more easily controlled to maintain a lower temperature, resulting in better airflow condensation. The cooling element has several spaced-apart and penetrating condensation channels; the multiple condensation channels increase the condensation area and trap more water vapor generated by the coil's heating.

[0041] In technical solution sixteen, the projections of the cooling element and the coil on the projection plane perpendicular to the third direction at least partially overlap, which is more conducive to the cooling element intercepting the airflow. Combined with the fact that each condensation channel is arranged at intervals along the first direction and runs through the third direction, the contact area between the airflow and the cooling element can be increased, thereby promoting the condensation of the airflow on the cooling element.

[0042] In technical solution seventeen, the cooling element is located on the first side of the coil frame along the third direction, allowing the cooling element and the yoke to respectively block the airflow from migrating to the contact group. Furthermore, the yoke, being a metal structure, also promotes airflow condensation. The lead-out terminals of the contact portion and the coil terminals of the magnetic circuit portion are both located at the first end of the coil frame along the first direction. This arrangement facilitates the installation of the cooling element and allows the relay to be inverted. When the first direction is vertical, the hot airflow flows upwards and is less likely to migrate to the contact group at the bottom.

[0043] In technical solution eighteen, the coil and the receiving element cooperate to form a blocking structure along the second direction to constrain the airflow in the second direction and force the airflow to migrate along the first and third directions. Combined with the condensation channel located at the first end of the coil frame along the first direction and / or the first or second side along the third direction, the blocking structure can force the airflow to migrate to the condensation channel, thereby suppressing the migration of water vapor to the contact group in different directions at multiple locations. Attached Figure Description

[0044] 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.

[0045] Figure 1 This is a schematic diagram of the relay in Embodiment 1 of this utility model;

[0046] Figure 2 This is a schematic diagram of the receiving component according to Embodiment 1 of this utility model;

[0047] Figure 3 This is a top view of the relay according to Embodiment 1 of this utility model;

[0048] Figure 4 for Figure 3 Sectional view along the AA direction;

[0049] Figure 5 This is a cross-sectional view of the relay according to Embodiment 2 of this utility model;

[0050] Figure 6 This is a bottom view of the accommodating member of Embodiment 2 of this utility model;

[0051] Figure 7 This is a cross-sectional view of the relay according to Embodiment 3 of this utility model;

[0052] Figure 8 This is a schematic diagram of the relay concealed housing in Embodiment 4 of this utility model;

[0053] Figure 9 This is a cross-sectional view of an embodiment of the present utility model.

[0054] Explanation of key figure labels:

[0055] 10 housing; 11 first wall; 12 second connecting block; 13 base plate; 100 relay body; 20 magnetic circuit part; 21 coil frame; 211 first baffle; 212 second baffle; 213 winding shaft; 214 housing cavity; 215 first connecting block; 22 coil; 23 coil terminal; 24 iron core; 25 yoke; 251 first arm; 252 second arm; 26 armature; 30 moving spring; 31 connecting part; 311 moving lead-out terminal; 32 contact part; 33 bending part; 40 stationary spring assembly; 41 stationary spring; 42 stationary lead-out terminal; 50 contact group; 51 moving contact; 52 stationary contact; 60 cooling component; 61 condensation interface; 01 condensation channel; 011 condensation sub-channel; 70 airflow reversing structure; 71 first protrusion. Detailed Implementation

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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".

[0061] 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. 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.

[0062] Example 1

[0063] See Figure 1-4 , Figure 1-4 A relay is shown, including a housing 10, a relay body 100, and a cooling element 60. The relay body 100 includes a magnetic circuit portion 20 and a contact portion.

[0064] See Figure 1-2 The accommodating member 10 has a box-shaped structure, and the second end of the accommodating member 10 along the first direction ( Figure 1The lower end of the receiving member 10 is open, and the second retaining wall 212 of the coil frame 21 (hereinafter referred to as the coil frame 21) is fixedly connected to form a cavity for receiving the coil 22 and the contact group 50. The receiving member 10 is provided with a first wall 11 that is opposite to the first end of the coil frame 21 (hereinafter referred to as the coil frame 21). The first wall 11 is provided with second connecting blocks 12 on both sides along the second direction, which are suitable for overlapping with the first connecting block 215 (hereinafter referred to as the first connecting block 215).

[0065] See Figure 1 and Figure 4 The magnetic circuit section 20 includes a coil frame 21, a coil 22, coil terminals 23, an iron core 24, a yoke 25, and an armature 26. The coil frame 21 includes a first barrier 211, a second barrier 212, and a winding shaft 213 located between the first barrier 211 and the second barrier 212. The first barrier 211 is disposed towards the first wall 11 of the receiving member 10. See [reference needed]. Figure 1 The first barrier 211 protrudes from the first side of the coil frame 21 along the third direction and has a receiving cavity 214 for accommodating the contact assembly 50 (hereinafter referred to as the contact assembly 50). The first barrier 211 has stepped first connecting blocks 215 on both sides along the second direction, with each first connecting block 215 forming a step along the third direction. The two first connecting blocks 215 overlap with the two second connecting blocks 12, causing the coil frame 21 to cooperate with the receiving member 10 on both sides along the second direction to form a blocking structure.

[0066] See also Figure 4 The 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 right 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 right 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.

[0067] The contact portion includes a moving spring 30, a stationary spring assembly 40, and at least one contact group 50, see [link / reference]. Figure 4 The moving spring 30 has a connecting part 31, a contact part 32, and a bending part 33 that are integrated with each other. The connecting part 31 extends along a first direction, and the contact part 32 extends along a third direction. The connecting part 31 is located on the second side of the coil frame 21 along the third direction. Figure 4The connecting part 31 (right 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 part 31 penetrates the second baffle 212 to form a moving lead-out terminal 311. The contact part 32 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 contact part 32 also extends into the receiving cavity 214 and is fixed to the moving contact 51 mentioned below. The bent part 33 connects the upper end of the connecting part 31 and the right end of the contact part 32 and bends upward. The armature 26 is adapted to drive the contact part 32 to swing so that the moving contact 51 and the stationary contact 52 mentioned below close or open along the first direction.

[0068] See Figure 1 and Figure 4 The stationary spring assembly 40 is located on the first side of the coil frame 21 along the third direction. The stationary spring assembly 40 is fixed to the stationary contact 52 and cooperates with the coil frame 21 to form a blocking structure. In this embodiment, the stationary spring assembly 40 contacts both ends of the coil frame 21 along the first direction, that is, it contacts both the first barrier wall 211 and the second barrier wall 212. The projections of the stationary spring assembly 40 and the coil 22 on the projection plane perpendicular to the third direction at least partially overlap. However, it should be understood that in other embodiments, the stationary spring assembly 40 can also cooperate with the coil frame 21 and the receiving member 10 to form a blocking structure. In this case, the receiving member 10 may have a protrusion on the side wall near the first side of the coil frame 21 along the third direction that abuts against the stationary spring assembly 40. In this embodiment, see 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.

[0069] See also Figure 1 and Figure 4 The contact group 50 is located at the first end of the coil frame 21 along the first direction 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.

[0070] In this embodiment, at least one condensation channel 01 for condensing the passing airflow is provided in at least one airflow passage leading to the contact group 50. The condensation channel 01 refers to a specific structural channel provided in the airflow passage leading to the contact group 50 within the relay. It can utilize the channel's own structure (e.g., increasing the contact area with the airflow), material properties, and / or heat exchange with the environment to lower the temperature of the airflow flowing through the channel below the dew point, thereby promoting the condensation and precipitation of water vapor contained in the airflow. In this embodiment, the condensation channel 01 is located at a first end of the coil frame 21 along a first direction and / or a first or second side along a third direction. In this embodiment, the cooling element 60 is provided with a condensation interface 61, which forms the channel wall of the condensation channel 01. See also... Figure 4 The cooling element 60 is a cooling coating disposed on the inner surface of the receiving member 10. The condensation interface 61 of the cooling element 60 is at least partially spaced from the outer surface of the relay body 100 to cooperate with it to form a condensation channel 01. For example, the condensation interface 61 of the cooling element 60 is at least partially spaced from the outer surface of at least one of the moving spring 30, armature 26 and yoke 25. In this embodiment, the condensation channel 01 is located at a first end of the coil frame 21 along a first direction and a second side along a third direction. The condensation channel 01 extends at least partially along the first direction and is located on the second side of the coil frame 21 along a third direction. The condensation channel 01 also extends at least partially along a third direction and is located at the first end of the coil frame 21 along the first direction. The condensation interface 61 of the cooling element 60 avoids the contact group 50 and is spaced from the moving spring 30, the first arm 251 and the armature 26.

[0071] In this embodiment, the condensation channel 01 can condense water vapor in the airflow in advance, reduce the air humidity entering the contact area, prevent condensation and ice formation on the contact surface before contact, ensure contact and conduction, and avoid problems such as reduced insulation between contacts, short circuits, oxidation corrosion, and abnormal arcing caused by condensation, thereby improving the reliability and lifespan of the relay.

[0072] In this embodiment, the airflow is condensed by the cooling element 60. In practical applications, materials with better thermal conductivity or components with better heat exchange with the environment can be selected as the cooling element 60, which is more conducive to keeping the cooling element 60 at a lower temperature to promote the condensation of the airflow in the condensation channel 01 and improve the condensation efficiency.

[0073] In this embodiment, since the accommodating element 10 is easy to exchange heat with the outside, the accommodating element 10 has a low temperature, and the airflow is easy to condense on the inner wall of the accommodating element 10. The cooling element 60 is a cooling coating provided on the inner surface of the accommodating element 10, which is more conducive to the formation of a "heat dissipation-condensation" composite interface between the cooling coating and the accommodating element 10, improving the consistency of heat exchange, reducing the risk of local high humidity, and making it more conducive to keeping the cooling element 60 at a lower temperature to promote the condensation of the airflow on the condensation interface 61 of the cooling element 60. In addition, the cooling coating can be integrated with the accommodating element 10, eliminating the need for an additional cooling element 60, which is more conducive to reducing the size of the relay and reducing the cost of modifying the relay.

[0074] In this embodiment, the structure of the relay body 100 (such as the yoke 25 and armature 26) is fully utilized to form a condensation channel 01 by cooperating with the condensation interface 61 of the cooling component 60. This can guide the airflow to condense on the condensation interface 61. When the part of the condensation channel 01 formed on the outer surface of the relay body 100 is made of metal, it can also promote the condensation of the airflow on the outer surface of the relay.

[0075] In this embodiment, the armature 26, yoke 25, and moving spring 30 are all made of metal. The condensation interface 61 of the cooling component 60 is at least partially spaced from the outer surface of at least one of the moving spring 30, armature 26, and yoke 25, which can promote the condensation of airflow on at least one of the moving spring 30, armature 26, and yoke 25, thereby increasing the condensation area, increasing the condensation efficiency and the amount of water vapor in the condensed airflow, and reducing the air humidity in the contact area.

[0076] In this embodiment, the condensation channel 01 extends at least partially along the first direction and is located on the second side of the coil frame 21 along the third direction. The condensation channel 01 also extends at least partially along the third direction and is located at the first end of the coil frame 21 along the first direction. The path of the condensation channel 01 is longer, and the structural arrangement of the condensation channel 01 allows the airflow to first move away from the contact group 50 in the first direction section of the condensation channel 01 and achieve preliminary cooling and condensation, and then achieve secondary cooling and condensation in the third direction section. Secondary dehumidification is performed before the airflow finally enters the contact area, intercepting residual water vapor, which is more conducive to promoting the condensation of the airflow before it migrates to the contact group 50, and reducing the water vapor content around the contact group 50.

[0077] In this embodiment, the condensation interface 61 of the cooling component 60 avoids the contact group 50 and the moving spring 30, the first arm 251 and the armature 26 being spaced apart and opposite to each other, so that the condensation channel 01 is located on the second side of the coil frame 21 along the third direction and the first end along the first direction, ensuring that the airflow is fully condensed in the condensation channel 01 before reaching the contact group 50.

[0078] In this embodiment, the stationary spring assembly 40, as a metal component, forms a physical barrier between the contact group 50 and the coil 22 through structural cooperation with the coil frame 21 or simultaneously with the coil frame 21 and the housing 10. This forces the hot and humid air to bypass the predetermined condensation channel 01, thereby promoting airflow condensation. Because the metal surface of the stationary spring assembly 40 has a low thermal conductivity temperature, the airflow flowing around it is cooled, and water vapor condenses and precipitates on the surface of the stationary spring assembly 40.

[0079] In this embodiment, the coil 22 forms a blocking structure with the accommodating member 10 on both sides of the second direction, which constrains the airflow in the second direction and forces the airflow to migrate along the first and third directions. Combined with the condensation channel 01 located at the first end of the coil frame 21 along the first direction and / or the first or second side along the third direction, the blocking structure can force the airflow to migrate to the condensation channel 01, thereby suppressing the migration of water vapor in different directions to the contact group 50 at multiple locations.

[0080] Example 2

[0081] The structure of this embodiment is basically the same as that of Embodiment 1, except that, see [link to Embodiment 1]. Figure 5 An airflow reversing structure 70 protrudes from the first wall 11, located on a second side near the coil frame 21 along a third direction. The airflow reversing structure 70 increases the contact area between the airflow and the first wall 11. (See also...) Figure 6 The airflow reversing structure 70 includes at least two condenser channels 011 spaced apart along a third direction and extending along a second direction. The condenser channels 011 are formed between first protrusions 71 that are opposite to each other. The airflow reversing structure 70 includes a plurality of first protrusions 71 that are spaced apart along a third direction and extending along a second direction and protruding from the first wall 11 along a first direction. The projections of adjacent first protrusions 71 along the third direction on a projection plane perpendicular to the third direction at least partially overlap and at least partially offset by 50%.

[0082] In this embodiment, the airflow is intercepted by the airflow reversing structure 70 as it flows from the outside of the first arm 251 of the yoke 25 to the contact group 50, and condenses on the first wall 11 of the accommodating member 10. This is more conducive to promoting the condensation of the airflow before it migrates to the contact group 50. This arrangement also makes full use of the space between the first wall 11 of the accommodating member 10 and the first end of the relay body 100 in the first direction, without increasing the height of the relay in the first direction. If the airflow reversing structure 70 is set on the side wall of the accommodating member 10, the space between the side wall of the accommodating member 10 and the relay body 100 is narrow, and the volume of the relay needs to be increased. Therefore, the airflow reversing structure 70 protruding from the first wall 11 can make full use of the operating space of the moving spring 30 and the armature 26, which is more conducive to reducing the volume of the relay. Since the condensation interface 61 of the cooling element 60 avoids the contact group 50 and the moving spring 30, the first arm 251 and the armature 26 are all spaced apart and opposite, the cooling element 60 is provided on the first wall 11. That is to say, when the airflow is along the condensation channel 01 to the contact group 50, the airflow reversing structure 70 forces the airflow to slow down and get closer to the cooling element 60. The cooling element 60 drives the phase change through the temperature difference. The combination of the two greatly increases the water vapor interception efficiency and jointly achieves the rapid interception of water vapor, so that the airflow has a higher condensation efficiency in the condensation channel 01.

[0083] In this embodiment, the airflow reversing structure includes at least two condensation sub-channels 011 spaced apart along a third direction and extending along a second direction, which can increase the condensation area, thereby increasing the condensation efficiency and the amount of water vapor in the condensation airflow, and reducing the air humidity in the contact area.

[0084] In this embodiment, the airflow reversing structure 70 forms a labyrinthine flow channel, which forces the airflow to turn multiple times, extending the airflow path and thus increasing the contact area between the airflow and the first wall 11 of the receiving member 10. The projections of adjacent first protrusions 71 along the third direction on the projection plane perpendicular to the third direction are at least 50% offset, with even greater offset between adjacent first protrusions 71 compared to overlapping portions. This is more conducive to preventing excessive resistance from the airflow reversing structure 70, which would cause the airflow to flow primarily along the gap between the free end of the first protrusion 71 and the moving spring 30, rather than through the gap between adjacent first protrusions 71. In other words, it is more conducive to the airflow passing through the airflow reversing structure 70, increasing the contact area between the airflow and the first wall 11. Furthermore, the airflow reversing structure 70 also increases the structural strength of the first wall 11.

[0085] Example 3

[0086] Example 3 has a structure that is basically the same as Example 2, except that, see [link to example]. Figure 7In this embodiment, the relay does not include the cooling element 60. The condensation channel 01 is only provided at the first end of the coil frame 21 along the first direction. The channel wall of the condensation channel 01 is provided with an airflow reversing structure 70 protruding. The airflow reversing structure 70 is used to increase the contact area between the airflow and the receiving element 10. The airflow reversing structure 70 is at least partially spaced from the outer surface of the relay body 100 to cooperate with it to form the condensation channel 01. The airflow reversing structure 70 protrudes from the first wall 11. The channel wall of the condensation channel 01 is also formed in the part of the contact portion 32 that avoids the contact group 50 and the surface of the armature 26 facing the first wall 11. The airflow reversing structure 70 is close to the first arm 251 of the yoke 25 along the third direction.

[0087] In this embodiment, since the accommodating member 10 easily exchanges heat with the outside environment, the accommodating member 10 has a low temperature. The channel wall of the condensation channel 01 is provided with an airflow reversing structure 70 protruding. The airflow reversing structure 70 is used to increase the contact area between the airflow and the accommodating member 10, which can promote the condensation of water vapor on the inner wall of the accommodating member 10. The airflow reversing structure 70 is at least partially spaced from the outer surface of the relay body 100 to cooperate with it to form the condensation channel 01. It makes full use of the structure of the relay body 100 (such as the yoke 25 and armature 26), and can guide the airflow through the airflow reversing structure 70, thereby promoting the condensation of water vapor on the inner wall of the accommodating member 10. When the part of the outer surface of the relay body 100 that forms the condensation channel 01 is made of metal, it can also promote the condensation of airflow on the outer surface of the relay.

[0088] In this embodiment, the first wall 11 avoids the contact group 50 and the outer surface of the relay, forming a condensation channel 01. The airflow reversing structure 70 protrudes from the first wall 11. This arrangement allows the airflow to be intercepted by the airflow reversing structure 70 as it flows towards the contact group 50, and condenses on the first wall 11 of the accommodating member 10, which is more conducive to promoting the condensation of the airflow before it migrates to the contact group 50. This arrangement also makes full use of the space between the first wall 11 of the accommodating member 10 and the first end of the relay body 100 in the first direction, without increasing the height of the relay in the first direction. If the airflow reversing structure 70 is set on the side wall of the accommodating member 10, the space between the side wall of the accommodating member 10 and the relay body 100 is small, and the volume of the relay would need to be increased. Therefore, the airflow reversing structure 70 protruding from the first wall 11 can make full use of the operating space of the moving spring 30 and the armature 26, which is more conducive to reducing the volume of the relay.

[0089] In this embodiment, the channel wall of the condensation channel 01 is also formed on the part of the contact portion 32 that avoids the contact group 50 and on the surface of the armature 26 facing the first wall 11. The armature 26 and the moving spring 30 are both made of metal, which can promote the condensation of airflow on the contact portion 32 of the armature 26 and the moving spring 30, thereby trapping more water vapor.

[0090] Example 4

[0091] Example 4 has a structure that is basically the same as that of Example 1, except that, see [link to example]. Figure 8-9 :

[0092] First, the cooling element 60 is located radially outside the coil 22 and contacts the first baffle 211 and the second baffle 212 at both ends of the coil frame 21 along the first direction; the cooling element 60 is located on the first side of the coil frame 21 along the third direction; the cooling element 60 is provided with condensation channels 01. The cooling element 60 has a grid plate structure, and a plurality of condensation channels 01 are provided on the cooling element 60, spaced apart and penetrating along the first direction. The projections of the cooling element 60 and the coil 22 on a projection plane perpendicular to the third direction at least partially overlap; in this embodiment, the condensation channels 01 penetrate along the third direction.

[0093] Second, the housing 10 includes a base plate 13 and a housing (not shown in the figure). The base plate 13 is located at the first end of the coil frame 21 along the first direction and is enclosed with the first baffle 211 to form a space for the contact portion 32 of the moving spring 30 to move. The housing is open at the first end (upper end) along the first direction. The housing is fixed to the base plate 13 and forms a cavity for housing the coil 22 and the contact group 50.

[0094] Third, the lead-out terminals of the contact portion and the coil terminals 23 of the magnetic circuit portion 20 are both located at the first end of the coil frame 21 along the first direction and extend through the base plate 13;

[0095] Fourth, the stationary spring assembly is fixed to the stationary contact 52 and located on at least one side of the contact group 50 along the second direction. In this embodiment, preferably, the two stationary springs 41 of the stationary spring assembly are located on both sides of the contact group 50 along the second direction.

[0096] In this embodiment, the condensation channel 01 is located on the first side of the coil frame 21 along the third direction.

[0097] In this embodiment, the cooling element 60 is located radially outside the coil 22 and contacts both ends of the coil frame 21 along the first direction. The cooling element 60 can trap water vapor diffused radially from the coil 22 and promote the condensation of water vapor on the cooling element 60. In addition, the separately provided cooling element 60 is easier to manufacture and easier to control and maintain at a lower temperature, thereby achieving a better airflow condensation effect.

[0098] In this embodiment, the cooling component 60 is provided with a plurality of condensation channels 01 that are spaced apart and pass through along the first direction. The arrangement of multiple condensation channels 01 can increase the condensation area and trap more water vapor generated by the heating of the coil 22.

[0099] In this embodiment, the projections of the cooling element 60 and the coil 22 on the projection plane perpendicular to the third direction at least partially overlap, which is more conducive to the cooling element 60 intercepting the airflow. Combined with the condensation channel 01 penetrating along the third direction, the contact area between the airflow and the cooling element 60 can be increased, thereby promoting the condensation of the airflow on the cooling element 60.

[0100] In this embodiment, the cooling element 60 is located on the first side of the coil frame 21 along the third direction, so that the cooling element 60 and the yoke 25 can respectively block the airflow of the coil 22 from migrating to the contact group 50. The yoke 25 is a metal structure, which can also promote the condensation of the airflow. The lead-out terminals of the contact portion and the coil terminals 23 of the magnetic circuit portion 20 are both located at the first end of the coil frame 21 along the first direction. The above arrangement is beneficial to the installation of the cooling element 60 and allows the relay to be installed upside down. When the first direction is vertical, the hot airflow flows upward and is not easily migrated to the contact group 50 at the bottom.

[0101] 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 a relay body (100) and a receiving member (10), the relay body (100) comprising a magnetic circuit portion (20) and a contact portion, the magnetic circuit portion (20) comprising a coil (22), the contact portion comprising at least one contact group (50), the coil (22) and the contact group (50) both being received in the receiving member (10), characterized in that, At least one airflow passage leading to the contact group (50) is provided with at least one condensation channel (01) for condensing the passing airflow.

2. A relay as described in claim 1, characterized in that, The relay is provided with a cooling element (60), the cooling element (60) is provided with a condensation interface (61), and the condensation interface (61) forms the channel wall of the condensation channel (01).

3. A relay as described in claim 2, characterized in that, The cooling element (60) is a cooling coating provided on the inner surface of the accommodating element (10).

4. A relay as described in claim 3, characterized in that, The condensation interface (61) of the cooling element (60) is at least partially spaced from the outer surface of the relay body (100) to cooperate with it to form a condensation channel (01).

5. A relay as described in claim 4, characterized in that, The magnetic circuit portion (20) further includes an armature (26) and a yoke (25), the contact portion includes a moving spring (30), and the condensation interface (61) of the cooling element (60) is at least partially spaced from the outer surface of at least one of the moving spring (30), armature (26) and yoke (25).

6. A relay as described in claim 5, characterized in that, The magnetic circuit portion (20) includes a coil frame (21), the coil (22) is wound on the coil frame (21) and its axis extends along a first direction, the contact group (50) is located at a first end of the coil frame (21) along the first direction and close to a first side of the coil frame (21) along a third direction, the contact group (50) includes a moving contact (51) and a stationary contact (52) respectively, the moving contact (51) swings relative to the stationary contact (52) in a plane perpendicular to a second direction and closes or opens with the stationary contact (52) by a motion component along the first direction; the condensation channel (01) extends at least partially along the first direction and is located on a second side of the coil frame (21) along a third direction, the condensation channel (01) also extends at least partially along a third direction and is located at a first end of the coil frame (21) along the first direction; the first direction, the second direction, and the third direction are orthogonal to each other.

7. A relay as described in claim 6, characterized in that, The receiving member (10) is provided with a first wall (11) opposite to the first end of the coil frame (21); the first wall (11) is provided with an airflow reversing structure (70) protruding from the second side of the coil frame (21) along the third direction, the airflow reversing structure (70) is used to increase the contact area between the airflow and the first wall (11).

8. A relay as described in claim 7, characterized in that, The magnetic circuit part (20) also includes an iron core (24); the moving spring (30) is provided with a contact part (32) and a connecting part (31); the iron core (24) passes through the coil frame (21) along the first direction, the armature (26) is located at the first end of the coil frame (21) along the first direction and is fixedly connected to the contact part (32), and the contact part (32) is fixedly connected to the moving contact (51); The yoke (25) is provided with a first arm (251) extending in a first direction and a second arm (252) extending in a third direction. The first arm (251) is fixed to the connecting part (31) on the second side of the coil frame (21) in the third direction, and the second arm (252) is fixed to the iron core (24) at the second end of the coil frame (21) in the first direction. The condensation interface (61) of the cooling element (60) avoids the contact group (50) and is spaced apart from the moving spring (30), the first arm (251) and the armature (26).

9. A relay as described in claim 1, characterized in that, The condensation channel (01) has an airflow reversing structure (70) protruding from its channel wall. The airflow reversing structure (70) is used to increase the contact area between the airflow and the receiving member (10). The airflow reversing structure (70) is at least partially spaced from the outer surface of the relay body (100) to cooperate with it to form the condensation channel (01).

10. A relay as described in claim 9, characterized in that, The magnetic circuit section (20) is also provided with a coil frame (21), the coil (22) is wound on the coil frame (21) and the axis extends along the first direction, the contact group (50) is located at the first end of the coil frame (21) along the first direction 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) arranged corresponding to each other, 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; the first direction, the second direction and the third direction are orthogonal; the receiving member (10) is provided with a first wall (11) opposite to the first end of the coil frame (21), and the airflow reversing structure (70) protrudes from the first wall (11).

11. A relay as claimed in any one of claims 7-8 or 10, characterized in that, The airflow reversing structure (70) includes at least two condenser channels (011) spaced apart along a third direction and extending along a second direction.

12. A relay as described in claim 11, characterized in that, The airflow reversing structure (70) includes a plurality of first protrusions (71) extending along a second direction and spaced apart along a third direction on the first wall (11) along a first direction. The condenser channel (011) is formed between the first protrusions (71) that are opposite to each other. The projections of adjacent first protrusions (71) along the third direction on the projection plane perpendicular to the third direction at least partially overlap and at least partially offset by 50%.

13. A relay as described in claim 10, characterized in that, The magnetic circuit section (20) is provided with an iron core (24), an armature (26), and a yoke (25). The contact section is provided with a moving spring (30), which is provided with a contact portion (32) and a connecting portion (31). The iron core (24) passes through the coil frame (21) along a first direction. The armature (26) is located at the first end of the coil frame (21) along the first direction and is fixedly connected to the contact portion (32). The contact portion (32) is fixedly connected to the moving contact (51). 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 connected to the coil frame (25) along the first direction. The coil frame (21) is fixed to the connecting part (31) on the second side along the third direction, and the second arm (252) is fixed to the iron core (24) at the second end of the coil frame (21) along the first direction; the armature (26) is adapted to drive the contact part (32) to swing so that the moving contact (51) and the stationary contact (52) are closed or opened along the first direction; the channel wall of the condensation channel (01) is also formed on the part of the contact part (32) that avoids the contact group (50) and on the surface of the armature (26) facing the first wall (11); the airflow reversing structure (70) is close to the first arm (251) of the yoke (25) along the third direction.

14. A relay as claimed in any one of claims 6-8, 10, or 12, characterized in that, The contact portion further includes a stationary spring assembly (40), which is located on the first side of the coil frame (21) along the third direction. The stationary spring assembly (40) is fixed to the stationary contact (52) and cooperates with the coil frame (21) or simultaneously cooperates with the coil frame (21) and the receiving member (10) to form a blocking structure. The projection of the stationary spring assembly (40) and the coil (22) on the projection plane perpendicular to the third direction at least partially overlaps.

15. A relay as described in claim 1, characterized in that, The magnetic circuit portion (20) includes a coil frame (21), the coil (22) is wound on the coil frame (21) and its axis extends along a first direction, and the contact group (50) is located at the first end of the coil frame (21) along the first direction; the relay is provided with a cooling element (60), the cooling element (60) is located on the radially outer side of the coil (22) and contacts both ends of the coil frame (21) along the first direction; the cooling element (60) is provided with a plurality of spaced and penetrating condensation channels (01).

16. A relay as described in claim 15, characterized in that, The contact group (50) includes a moving contact (51) and a stationary contact (52) respectively. 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) in the first direction. The projections of the cooling element (60) and the coil (22) on a projection plane perpendicular to the third direction at least partially overlap. Each condensation channel (01) is arranged at intervals along the first direction and passes through along the third direction. The first direction, the second direction, and the third direction are orthogonal to each other.

17. A relay as described in claim 16, characterized in that, The magnetic circuit section (20) is provided with an iron core (24), a yoke (25) and an armature (26); the contact section is provided with a moving spring (30); the moving spring (30) is provided with a contact part (32) and a connecting part (31); the contact group (50) is located near the first side of the coil frame (21) along the third direction. The iron core (24) extends through the coil frame (21) along a first direction. The armature (26) is located at the first end of the coil frame (21) along the first direction and is fixedly connected to the contact portion (32). The contact portion (32) is fixedly connected to the moving contact (51). 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 fixedly connected to the connecting portion (31) on the second side of the coil frame (21) along the third direction. 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. The cooling element (60) is located on the first side of the coil frame (21) along the third direction. The lead-out terminals of the contact portion and the coil terminals (23) of the magnetic circuit portion (20) are both located at the first end of the coil frame (21) along the first direction; the contact portion is provided with a stationary spring assembly (40), which is fixed to the stationary contact (52) and located on at least one side of the contact group (50) along the second direction.

18. The relay as claimed in claim 1, characterized in that, The magnetic circuit section (20) is provided with a coil frame (21), an iron core (24), a yoke (25), and an armature (26). The contact section is provided with a moving spring (30), which has a contact part (32) and a connecting part (31). The contact group (50) includes a moving contact (51) and a stationary contact (52) arranged corresponding to each other. The coil (22) is wound on the coil frame (21) and its axis extends along a first direction. The armature (26) and the contact group (50) are both located at the first end of the coil frame (21) along the first direction. The contact group (50) is also located on the first side of the coil frame (21) along a third direction. The armature (26) is fixedly connected to the contact part (32), and the contact part (32) is fixedly connected to the moving contact (51). The yoke (25) has a first arm (251) extending along a first direction and a second arm (252) extending along a third direction. The first arm (251) is fixed to the connecting part (31) on the second side of the coil frame (21) along the third direction, and the second arm (252) is fixed to the iron core (24) at the second end of the coil frame (21) along the first direction. The armature (26) is adapted to drive the contact part (32) to swing so that 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) along the first direction. The two sides of the coil frame (21) along the second direction cooperate with the receiving member (10) to form a blocking structure. The first direction, the second direction and the third direction are orthogonal to each other. The condensation channel (01) is located at the first end of the coil frame (21) along the first direction and / or on the first or second side along the third direction.

Images