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 support and coil winding that winds on coil support, and the contact part is equipped with at least one contact group, and coil winding and contact group are all accommodated in accommodating piece, and the axis of coil winding extends along the first direction, and the contact group is located the first end of coil support along the first direction, and the first end of coil support cooperates with accommodating piece and forms the accommodation cavity that surrounds contact group to reduce the water vapor around contact group, the utility model can inhibit contact icing before contact contact, and 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 with 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 close the moving contact 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 improve the possibility of contact continuity.

[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 and a receiving element. The relay body includes a magnetic circuit portion and a contact portion. The magnetic circuit portion includes a coil frame and a coil winding wound on the coil frame. The contact portion includes at least one group of contacts. Both the coil winding and the group of contacts are received in the receiving element. The axis of the coil winding extends along a first direction. The group of contacts is located at a first end of the coil frame along the first direction. The first end of the coil frame cooperates with the receiving element to form a receiving cavity surrounding the group of contacts to reduce moisture around the group of contacts.

[0007] Technical Solution 2 based on Technical Solution 1: The contact portion includes a moving spring, which is at least partially located at the first end of the coil frame along the first direction; the receiving cavity is provided with an inlet for the moving spring to extend into; the flow area of ​​the inlet is smaller than the minimum flow area inside the receiving cavity.

[0008] Technical solution three based on technical solution two: The contact group includes correspondingly arranged moving contacts and stationary contacts, the moving contacts having a motion component along a first direction to close or open with the stationary contacts; the receiving member is provided with a blocking block, the blocking block forming the cavity wall at the entrance of the receiving cavity and used to limit the range of motion of the moving spring along the first direction.

[0009] Technical Solution 4 based on Technical Solution 3: The moving contact is adapted to swing relative to the stationary contact in a plane perpendicular to the second direction; the contact group is close to the front side of the coil frame along the third direction; the first direction, the second direction, and the third direction are orthogonal to each other; the first end of the coil frame and the receiving member are connected by overlapping or plugging to form a receiving cavity surrounding the contact group, and the blocking block extends along the second direction to the two opposite sidewalls of the receiving member.

[0010] Technical solution five based on technical solution four: The contact portion further includes a stationary spring assembly fixedly connected to the stationary contact; the stationary spring assembly is close to the front side of the coil frame along a third direction and at least partially overlaps with the projection of the coil on a plane perpendicular to the third direction; the receiving member is provided with a second sidewall close to the front side of the coil frame along a third direction, and the second sidewall protrudes with an abutment block adapted to abut against the first end of the coil frame along a first direction and / or the stationary spring assembly; the abutment block forms the cavity wall of the front side of the receiving cavity.

[0011] Technical Solution Six based on Technical Solution Four: The first end of the coil frame is provided with first connecting blocks extending in a third direction on both outer sides of the contact group along the second direction; the receiving member is provided with two opposing first sidewalls along the second direction, the two first sidewalls being adapted to abut against the two opposite sides of the two first connecting blocks along the second direction, the inner surface of the first sidewalls is also provided with a thickened block adapted to abut against the first connecting blocks along the first direction, the blocking block and the rear end of the thickened block are integrated, and the blocking block is also spaced from the first connecting block along the first direction.

[0012] Technical solution seven based on technical solution six: The accommodating member is further provided with a second connecting block at the first end facing the coil frame, which is spaced apart from the first connecting block along the first direction. The second connecting block extends along the second direction and its two ends are respectively connected to two thickened blocks. The rear end of the second connecting block is connected to the blocking block.

[0013] Technical solution eight based on technical solution four: The accommodating component includes a shell and a base that are fixedly connected to each other, and the base is inserted into the coil frame to form the accommodating cavity.

[0014] Technical solution nine based on technical solution eight: the base is close to the front side of the coil frame along a third direction; the receiving cavity has only a rear end opening.

[0015] Technical solution ten based on technical solution nine: The first end of the coil frame is provided with first connecting blocks extending along the third direction on both outer sides of the contact group along the second direction, and the base is provided with a fifth connecting block that is suitable for extending between the two first connecting blocks.

[0016] Technical solution eleven based on technical solution one: The accommodating member includes a shell and a base fixedly connected to each other, the base being inserted into the coil frame to form the accommodating cavity; the contact group includes correspondingly arranged moving contacts and stationary contacts, the moving contacts being adapted to swing relative to the stationary contacts in a plane perpendicular to the second direction to close or open with the stationary contacts through a motion component along the first direction; the contact group is located near the front side of the coil frame along a third direction; the first direction, the second direction, and the third direction are orthogonal.

[0017] Based on technical solution eight or eleven, technical solution twelve: the base is close to the first end of the coil winding along the first direction; the receiving cavity has only a rear end opening.

[0018] Technical solution thirteen based on technical solution twelve: The first end of the coil frame is provided with a first baffle suitable for supporting the contact group and first connecting blocks extending in a third direction on both outer sides of the contact group along a second direction, the first connecting blocks extending forward relative to the first baffle; the contact portion also includes a stationary spring assembly; the stationary spring assembly is provided with a stationary lead-out terminal that passes through the first connecting block and extends out of the receiving member; the base is provided with a third connecting block suitable for insertion between the two first connecting blocks, the third connecting block extending in a second direction and suitable for abutting against the front end of the first baffle and the opposing surfaces of the two first connecting blocks; the base is also provided with fourth connecting blocks respectively suitable for abutting against the opposing surfaces of the two first connecting blocks; the two ends of the third connecting block are respectively integrated with the two fourth connecting blocks.

[0019] Technical solution fourteen, based on technical solution one: at least a portion of the accommodating cavity is made of metal.

[0020] 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:

[0021] Through continuous observation, experimentation, and research, the applicant has determined that the technical problem in existing relays—namely, the common issue of contact failure due to condensation and ice formation on the contact surfaces at low temperatures (e.g., ambient temperature ≤ -10℃)—lies in the coil's enameled wire wound around a coil frame. The gaps between the enameled wires trap or accumulate trace amounts of moisture, resulting in the presence of free water molecules inside the relay. During the low-temperature startup 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 coil energization leads to a significant increase in the air temperature in the adjacent area. This temperature rise causes the gas inside the coil cavity to expand, 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 surfaces. 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.

[0022] In technical solution one, the arrangement of the receiving cavity can reduce the absolute moisture content in the receiving cavity by reducing the space around the contact group, thereby reducing the probability of contact icing and improving the possibility of contact conduction. Compared with the coil frame forming a receiving cavity independently, the combination of the coil frame and the receiving frame can restrict the position of the coil frame near the contact group by the receiving component, which improves the stability of the coil frame and makes the relay structure more compact, which is more conducive to the miniaturization of the relay.

[0023] In technical solution two, the flow area at the inlet of the receiving cavity is smaller than the minimum flow area inside the receiving cavity. On the one hand, this can reduce the amount of water vapor entering the receiving cavity through the inlet, and on the other hand, it can limit the range of motion of the moving spring and prevent the moving spring from interfering with the inner wall of the receiving component.

[0024] In technical solution three, the blocking block ensures that the flow area at the inlet of the receiving cavity is less than the minimum flow area inside the receiving cavity. The blocking block limits the movement range of the moving spring along the first direction, preventing excessive movement of the moving spring from interfering with the inner wall of the receiving component. Furthermore, the blocking block on the receiving component also improves its strength.

[0025] In technical solution four, the overlapping or plugging fit can improve the sealing of the cavity wall, preventing airflow from flowing into the cavity through the gap between the coil frame and the receiving component, thereby reducing the moisture content in the cavity. The blocking block extends along the second direction to the two opposite side walls of the receiving component, allowing the blocking block to block the airflow flowing from back to front along the third direction, further reducing the absolute moisture content in the cavity, thereby improving the possibility of contact and conduction. In addition, the blocking block connects the two opposite side walls of the receiving component along the second direction, giving the receiving component higher strength.

[0026] In technical solution five, the stationary spring assembly, as a metal component, has a condensing effect on the airflow flowing around it. This allows for partial condensation of moisture by the stationary spring assembly, further reducing the water vapor content reaching the receiving cavity. Compared to a separate condensing element, using the stationary contact assembly to promote airflow condensation makes full use of the relay's structure, requires minimal modification to the relay, and is cost-effective. The abutment block further inhibits water vapor from flowing from the coil frame along the third direction to the receiving cavity, further reducing the absolute moisture content within the cavity and increasing the likelihood of contact continuity. Furthermore, the abutment block increases the strength of the second sidewall, resulting in a thicker cavity wall and preventing external moisture from entering the contact assembly through gaps in the plastic receiving element.

[0027] In technical solution six, the two first sidewalls are respectively adapted to abut against the two first connecting blocks on opposite sides along the second direction. The inner surface of the first sidewall also has a protruding thickened block adapted to abut against the first connecting block along the first direction, causing the first sidewall and the first connecting block to overlap. This overlap helps the receiving component to limit the coil frame in both the second and first directions and minimizes the volume of the receiving cavity, thereby reducing the absolute moisture content within the cavity and increasing the likelihood of contact continuity. The thickened block also enhances the strength of the first sidewall. Furthermore, since the receiving component is generally made of plastic, the thickened block makes the cavity wall thicker, preventing external moisture from entering the contact assembly through gaps in the plastic receiving component.

[0028] In technical solution seven, the inclusion of the second connecting block further reduces the volume within the receiving cavity without affecting the movement of the moving contact, thereby further reducing the absolute moisture content within the cavity and increasing the likelihood of contact and conduction. The second connecting block also enhances the strength of the receiving component. Furthermore, the thicker cavity wall of the second connecting block prevents external moisture from entering the area around the contact assembly through gaps in the plastic receiving component.

[0029] In technical solution eight, the base and the coil frame are connected to form a receiving cavity. Compared with the outer shell and the coil frame being connected to form a receiving cavity, the processing of the base is simpler.

[0030] In technical solution nine, the cavity is only open at the rear end, which further improves the sealing performance of the cavity and reduces the moisture content inside the cavity, thereby increasing the possibility of contact and conduction.

[0031] In technical solution ten, the arrangement of the first connecting block and the fifth connecting block is conducive to making the cavity wall of the receiving cavity thicker, which is more conducive to preventing external water vapor from entering.

[0032] In technical solution eleven, the base and the coil frame are connected to form a receiving cavity. Compared with the outer shell and the coil frame being connected to form a receiving cavity, the processing of the base is simpler.

[0033] In technical solution twelve, the cavity is only open at the rear end, which further improves the sealing performance of the cavity and reduces the water vapor content inside the cavity, thereby increasing the possibility of contact and conduction.

[0034] In technical solution thirteen, the first connecting block is located outside the third and fourth connecting blocks, which is beneficial for the installation of the static lead-out terminal; the cooperation of the first connecting block, the first retaining wall, the third connecting block and the fourth connecting block can form a more enclosed and thicker cavity, which further reduces the water vapor content in the cavity.

[0035] In technical solution fourteen, the metal surface has a lower thermal conductivity temperature. Before the contacts are connected, the metal surface temperature is lower than that of the plastic. The airflow flowing around it is easily cooled and condensed. At least part of the material of the receiving cavity is metal, which further reduces the water vapor content around the contact group. Attached Figure Description

[0036] 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.

[0037] Figure 1 This is a three-dimensional exploded view of the relay according to Embodiment 1 of this utility model;

[0038] Figure 2 This is a perspective view of the accommodating member according to Embodiment 1 of this utility model;

[0039] Figure 3 for Figure 2 A bottom view;

[0040] Figure 4 This is a front view of the relay in Embodiment 1 of this utility model;

[0041] Figure 5 for Figure 4 Sectional view along the AA direction;

[0042] Figure 6 for Figure 4 Sectional view in the BB direction;

[0043] Figure 7 This is a top view of the relay according to Embodiment 1 of this utility model;

[0044] Figure 8 for Figure 7 Sectional view in the CC direction;

[0045] Figure 9 This is a three-dimensional exploded view of the relay in Embodiment 2 of this utility model;

[0046] Figure 10 This is a three-dimensional schematic diagram of the base of Embodiment 2 of this utility model;

[0047] Figure 11 Cross-sectional view of Embodiment 2 of this utility model Figure 1 ;

[0048] Figure 12 Cross-sectional view of Embodiment 2 of this utility model Figure 2 ;

[0049] Figure 13 This is a three-dimensional schematic diagram of the base of Embodiment 3 of this utility model;

[0050] Figure 14 This is a three-dimensional exploded view of the relay in Embodiment 4 of this utility model;

[0051] Figure 15 This is a three-dimensional schematic diagram of the coil frame in Embodiment 4 of this utility model;

[0052] Figure 16 This is a three-dimensional schematic diagram of the base of Embodiment 4 of this utility model;

[0053] Figure 17 This is a cross-sectional view of embodiment 4 of the present invention. Figure 1 ;

[0054] Figure 18 This is a cross-sectional view of embodiment 4 of the present invention. Figure 2 .

[0055] Explanation of key figure labels:

[0056] 10. Receiving component; 11. Top wall; 12. First side wall; 13. Second side wall; 131. Abutting block; 14. Blocking block; 15. Second connecting block; 16. Thickened block; 17. Base; 171. Third connecting block; 172. Fourth connecting block; 173. Fifth connecting block; 18. Housing; 100. Relay body; 20. Magnetic circuit part; 21. Coil frame; 211. First retaining wall; 212. Second retaining wall; 213. Winding shaft; 214. First connecting block; 2141. Slot; 2141. Receiving cavity; 02. Insertion slot; 22. Coil; 23. Coil terminal; 24. Iron core; 25. Yoke; 251. First arm; 252. Armature; 26. Moving spring; 30. Connecting part; 31. Moving lead-out terminal; 311. Contact part; 32. Bending part; 33. Stationary spring assembly; 40. Stationary spring; 41. Stationary lead-out terminal; 42. Contact group; 50. Moving contact; 51. Stationary contact; 52. Detailed Implementation

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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".

[0062] In the claims and the description other than the embodiments, the terms "first direction," "second direction," and "third direction" refer only 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.

[0063] Example 1

[0064] See Figure 1-8 , Figure 1-8 A relay is shown, including a receiving element 10 and a relay body 100, the relay body 100 including a magnetic circuit portion 20 and a contact portion.

[0065] See Figure 1-2 The accommodating member 10 is generally box-shaped, with an opening at its second end along a first direction. The accommodating member 10 houses the coil frame 21, coil 22, and contact assembly 50 (described below). In this embodiment, the accommodating member 10 is fixedly connected to the second baffle 212 of the coil frame 21 (described below) to form a cavity. The accommodating member 10 has a top wall 11 opposite to the first baffle 211 of the coil frame 21 (described below), two first side walls 12 and a second side wall 13 opposite to each other along a second direction. The two first side walls 12 are located on opposite sides of the top wall 11 along the second direction, and the second side wall 13 is located on the front side of the top wall 11 along a third direction. The first side walls 12 are perpendicular to the second direction, and the second side wall 13 is perpendicular to the third direction. See also... Figure 2-3The accommodating member 10 is also provided with a blocking block 14 that cooperates with the first end of the coil frame 21 along the first direction and a second connecting block 15 that is spaced apart from the first connecting block 214 mentioned below along the first direction. In this embodiment, the second connecting block 15 and the blocking block 14 both protrude from the inner surface of the top wall 11 and are close to the second side wall 13. The blocking block 14 extends along the second direction to the two opposite side walls (first side wall 12) of the accommodating member 10. The blocking block 14 is also spaced apart from the first connecting block 214 mentioned below along the first direction. The two first sidewalls 12 are respectively adapted to abut against the two first connecting blocks 214 (hereinafter referred to as first connecting blocks 214) on opposite sides along a second direction. The inner surface of the first sidewall 12 also has a thickened block 16 protruding near the top wall 11, adapted to abut against the first connecting blocks 214 (hereinafter referred to as first connecting blocks 214) along a first direction. The thickened block 16 is located between the blocking block 14 and the second sidewall 13 along a third direction. The blocking block 14 and the rear end of the thickened block 16 are integrally connected. In this embodiment, the second connecting block 15 extends along the second direction and its two ends are respectively integrally connected to the two thickened blocks 16. The rear end of the second connecting block 15 is integrally connected to the blocking block 14. The second sidewall 13 has a protruding abutment block 131 adapted to abut against the coil frame 21 and / or the stationary spring 41 assembly. The abutment block 131 forms the cavity wall on the front side of the receiving cavity 01 (hereinafter referred to as receiving cavity 01). In this embodiment, see [reference needed]. Figure 4-5 The abutment block 131 is stepped along the first direction, and the part near the top wall 11 is thicker along the third direction. The abutment block 131 is also integrated with the front end of the second connecting block 15. Thus, the accommodating member 10 is enclosed by the thickened block 16, the blocking block 14, the second connecting block 15 and the abutment block 131 to form a box structure with the opening facing downward.

[0066] See Figure 4-5 The magnetic circuit portion 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 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 a first end (upper end) of the coil frame 21 along the first direction. In this embodiment, the first end of the coil frame 21 cooperates with the receiving member 10 to form a receiving cavity 01 surrounding the contact assembly 50 (hereinafter referred to as the contact assembly 50) to reduce moisture around the contact assembly 50. The receiving cavity 01 faces rearward ( Figure 5 The left side of the cavity 01 has an inlet for the moving spring 30 (described below) to extend into, and the flow area of ​​the inlet is smaller than the minimum flow area inside the receiving cavity 01. In this embodiment, the blocking block 14 forms the cavity wall at the inlet of the receiving cavity 01 and is used to limit the range of motion of the moving spring 30 (described below) along the first direction.

[0067] See Figure 6The first end of the coil frame 21 and the receiving member 10 are connected by overlapping or plugging to form a receiving cavity 01 that surrounds the contact group 50 (hereinafter referred to as the contact group 50). The blocking block 14 extends along the second direction to the two opposite side walls (first side wall 12) of the receiving member 10.

[0068] See Figure 1 The first end of the coil frame 21 is provided with first connecting blocks 214 located on both outer sides of the contact group 50 (hereinafter referred to as the contact group 50) along the second direction and extending along the third direction. The first connecting blocks 214 protrude from the first retaining wall 211. See [link to relevant documentation]. Figure 8 The first connecting block 214 abuts against the inner surface of the first sidewall 12 and the lower surface of the thickened block 16, thereby making the first connecting block 214 engage with the first sidewall 12 and the thickened block 16 to form an overlap. Both first connecting blocks 214 are fixed to the first retaining wall 211 and engage with the first retaining wall 211 to form two slots 2141 with openings facing each other. The slots 2141 allow the portion of the stationary spring 41 to be inserted as described below.

[0069] See also Figure 5 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 5 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 5 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 5 (Upper middle end), the left end of the armature 26 abuts against the upper end of the first arm 251. The armature 26 moves closer to or further away from the upper end of the core 24 by swinging in a plane perpendicular to the second direction.

[0070] The contact portion includes at least one contact group 50, a moving spring 30, and a stationary spring assembly 40, see also Figure 1 and Figure 5 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 01. 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.

[0071] See Figure 5The movable spring 30 is at least partially located at the first end of the coil frame 21 along the first direction. In this embodiment, the movable spring 30 is generally L-shaped and has a connecting portion 31, a contact portion 32, and a bending portion 33 that are integrally connected to each other. The connecting portion 31 extends along the first direction, the contact portion 32 extends along a third direction, and the connecting portion 31 is located on the second side of the coil frame 21 along the third direction. Figure 5 (Left side) and fixed to the first arm 251 of the yoke 25 and attached to the outer surface of the first arm 251, the lower end of the connecting part 31 extends out of the cavity formed by the receiving member 10 and the second baffle 212 and forms a movable lead-out terminal 311, the contact part 32 is located at the first end of the coil frame 21 along the first direction and fixed to the armature 26 and attached to the upper surface of the armature 26, the contact part 32 along the first side of the third direction ( Figure 5 The right side of the armature 26 extends into the receiving cavity 01 and is fixedly connected to the moving contact 51. The bent part 33 connects the upper end of the connecting part 31 and the left 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 close or open in the first direction.

[0072] See Figure 1 and Figure 5 The stationary spring assembly 40 is located near 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 and the receiving member 10 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 blocking wall 211 and the second blocking 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. See also [link to relevant documentation]. 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. (See also...) Figure 5 The upper end of the stationary spring 41 extends into the receiving cavity 01 and is fixedly connected to the stationary contact 52. The stationary spring assemblies 40 are respectively inserted into the two slots 2141. In this embodiment, each of the two stationary springs 41 is partially inserted into the slot 2141 along the third direction. Compared with the scheme where the stationary spring assemblies 40 are not inserted, the length of the relay along the second direction can be reduced, and the length of the receiving cavity 01 along the second direction can be reduced as much as possible, thereby reducing the volume of the receiving cavity 01. 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 can also be provided with only one stationary spring 41. Figure 5 As can be seen, the abutment block 131 abuts against the upper end of the static spring assembly 40, but at the same time, the abutment block 131 also abuts against the front end of the first retaining wall 211. Figure 5 (Not shown in the image).

[0073] In this embodiment, the arrangement of the receiving cavity 01 can reduce the absolute moisture content in the receiving cavity 01 by reducing the space around the contact group 50, thereby reducing the probability of contact icing and improving the possibility of contact conduction. Compared with the coil frame 21 forming the receiving cavity 01 independently, the coil frame 21 and the receiving frame cooperate to restrict the position of the coil frame 21 near the contact group 50 by the receiving member 10, which improves the stability of the coil frame 21 and makes the relay structure more compact, which is more conducive to the miniaturization of the relay.

[0074] In this embodiment, the flow area at the inlet of the accommodating cavity 01 is smaller than the minimum flow area inside the accommodating cavity 01. On the one hand, this can reduce the amount of water vapor entering the accommodating cavity 01 through the inlet. On the other hand, it can limit the range of motion of the moving spring 30 and prevent the moving spring 30 from interfering with the inner wall of the accommodating member 10.

[0075] In this embodiment, the blocking block 14 ensures that the flow area at the inlet of the receiving cavity 01 is less than the minimum flow area inside the receiving cavity 01. The blocking block 14 can limit the movement range of the moving spring 30 along the first direction, thus avoiding excessive movement range of the moving spring 30 and interference with the inner wall of the receiving member 10. In addition, the blocking block 14 is provided on the receiving member 10, which can also improve the strength of the receiving member 10.

[0076] In this embodiment, the overlapping or plugging fit can improve the sealing of the cavity wall of the receiving cavity 01, preventing airflow from flowing into the receiving cavity 01 through the gap between the coil frame 21 and the receiving member 10, thereby reducing the moisture content in the receiving cavity 01; the blocking block 14 extends along the second direction to the two opposite side walls of the receiving member 10, so that the blocking block 14 can block the airflow flowing from back to front along the third direction, further reducing the absolute moisture content in the receiving cavity 01, thereby improving the possibility of contact and conduction; in addition, the setting of the blocking block 14 allows the two opposite side walls of the receiving member 10 along the second direction to be connected by the blocking block 14, so that the receiving member 10 has higher strength.

[0077] In this embodiment, the stationary spring assembly 40 is a metal component. The metal surface of the stationary spring assembly 40 has a certain condensation effect on the airflow flowing around it. This allows for the partial obstruction formed by the stationary spring assembly 40 to condense moisture, further reducing the water vapor content reaching the receiving cavity 01. Compared to setting a separate condensing element, using the stationary contact assembly to promote airflow condensation makes full use of the relay's structure, requires minimal modification to the relay, and is cost-effective. The abutment block 131 further helps to suppress water vapor from the coil frame 21 flowing from the first side along the third direction to the receiving cavity 01, thereby further reducing the absolute moisture content in the receiving cavity 01 and increasing the likelihood of contact conduction. Furthermore, the abutment block 131 increases the strength of the second sidewall 13, making the cavity wall of the receiving cavity 01 thicker and preventing external moisture from entering the area around the contact assembly 50 through the gaps in the plastic receiving member 10.

[0078] In this embodiment, the two first sidewalls 12 are respectively adapted to abut against the two sides of the two first connecting blocks 214 that are opposite to each other in the second direction. The inner surface of the first sidewall 12 is also provided with a thickened block 16 adapted to abut against the first connecting block 214 in the first direction, so that the first sidewall 12 and the first connecting block 214 overlap. This overlap helps the receiving member 10 to limit the coil frame 21 in the second direction and the first direction, and minimizes the volume of the receiving cavity 01, thereby reducing the absolute content of moisture in the receiving cavity 01 and improving the possibility of contact conduction. The thickened block 16 also enhances the strength of the first sidewall 12. In addition, since the receiving member 10 is generally made of plastic, the thickened block 16 makes the cavity wall of the receiving cavity 01 thicker, which can also prevent external moisture from entering the contact group 50 through the gaps in the plastic receiving member 10.

[0079] In this embodiment, the second connecting block 15 further reduces the volume within the receiving cavity 01 without affecting the movement of the moving contact 51, thereby further reducing the absolute moisture content within the receiving cavity 01 and increasing the likelihood of contact and conduction. The second connecting block 15 also enhances the strength of the receiving member 10. The second connecting block 15 also makes the cavity wall of the receiving cavity 01 thicker, preventing external moisture from entering the area around the contact group 50 through the gaps in the plastic receiving member 10.

[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]. Figure 9-12The housing 10 includes a housing 18 and a base 17 fixedly connected to each other. After the housing 18 and the base 17 are fixedly connected, they form a cavity for accommodating the coil frame 21, the coil 22, and the contact assembly 50. The base 17 is inserted into the coil frame 21 to form a receiving cavity 01. In this embodiment, the base 17 is close to the first end (bottom end) of the coil frame 21 along the first direction; the lead-out terminals and coil terminals 23 of the contact portion both extend downward through the base 17.

[0082] The first connecting block 214 extends forward relative to the first retaining wall 211; the static spring assembly 40 is provided with a static lead-out terminal 42 that is inserted through the first connecting block 214 and extends out of the cavity;

[0083] In this embodiment, the receiving cavity 01 has only a rear end opening. Specifically, the base 17 is provided with a third connecting block 171 adapted to be inserted between the two first connecting blocks 214. The third connecting block 171 extends along the second direction and is adapted to abut against the front end of the first baffle 211 and the opposing surfaces of the two first connecting blocks 214. The base 17 is also provided with fourth connecting blocks 172, each adapted to abut against the opposing surfaces of the two first connecting blocks 214. The two ends of the third connecting block 171 are respectively integrated with the two fourth connecting blocks 172. The blocking block 14 is located at the rear end of the fourth connecting block 172 and is integrated with the rear end of the two third connecting blocks 171. Similarly, the base 17 is provided with a second connecting block 15 spaced apart from the first baffle 211 along the first direction. The second connecting block 15 is located within the space enclosed by the blocking block 14, the two third connecting blocks 171, and the fourth connecting block 172 and is integrated with them.

[0084] In this embodiment, the base 17 and the coil frame 21 are connected to form the receiving cavity 01. Compared with the outer shell 18 and the coil frame 21 being connected to form the receiving cavity 01, the processing of the base 17 is simpler.

[0085] In this embodiment, the receiving cavity 01 has only an opening at the rear end, which further improves the sealing performance of the receiving cavity 01 and reduces the moisture content inside the receiving cavity 01, thereby increasing the possibility of contact and conduction.

[0086] In this embodiment, the first connecting block 214 is located outside the second connecting block 15 and the fourth connecting block 172, which is beneficial for the installation of the static lead-out terminal 42; the cooperation of the first connecting block 214, the first baffle 211, the third connecting block 171 and the fourth connecting block 172 can form a more enclosed and thicker cavity 01, which further reduces the water vapor content in the cavity 01.

[0087] Example 3

[0088] This embodiment has a basically the same structure as Embodiment 2, except that, see [link to Embodiment 2]. Figure 13 The accommodating component 10 does not have a blocking block 14.

[0089] Example 4

[0090] Example 4 has a structure that is basically the same as that of Example 1, except that, see [link to example]. Figure 14-18 The receiving member 10 includes a housing 18 and a base 17 fixedly connected to each other. The base 17 is inserted into the coil holder 21 to form a receiving cavity 01. The base 17 is located near the front side of the coil holder 21 along a third direction. Figure 14 (The bottom is in the middle); the receiving cavity 01 has only a rear end opening. The first connecting block 214 is provided with a insertion groove 02 extending in the third direction, the insertion groove 02 for the insertion of the stationary spring 41; the base 17 has a fifth connecting block 173 protruding in the third direction, suitable for extending between the two first connecting blocks 214. See also Figure 17 The blocking block 14 is located on the top wall 11 of the outer shell 18, which is opposite to the first end of the coil frame 21.

[0091] In this embodiment, the receiving cavity 01 has only an opening at the rear end, which further improves the sealing performance of the receiving cavity 01 and reduces the moisture content inside the receiving cavity 01, thereby increasing the possibility of contact and conduction.

[0092] In this embodiment, the arrangement of the first connecting block 214 and the fifth connecting block 173 is conducive to making the cavity wall of the receiving cavity 01 thicker, which is more conducive to preventing external moisture from entering. The first connecting block 214 is provided with a third-direction extending insertion groove 02, which can further block external moisture from entering the receiving cavity 01.

[0093] Example 5

[0094] Example 5 has a structure that is basically the same as that of Example 2, except that at least part of the receiving cavity 01 is made of metal. Specifically, at least one of the third connecting block 171, the fourth connecting block 172, and the blocking block 14 may be made of metal.

[0095] In this embodiment, the metal surface has a lower thermal conductivity temperature. Before the contacts are connected, the metal surface temperature is lower than that of the plastic. The airflow flowing around it is easily cooled and condensed. At least part of the material of the receiving cavity 01 is metal, which further reduces the water vapor content around the contact group 50.

[0096] 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 frame (21) and a coil (22) wound on the coil frame (21), the contact portion comprising at least one contact group (50), the coil (22) and the contact group (50) being received in the receiving member (10), characterized in that, The axis of the coil (22) extends along a first direction; the contact group (50) is located at the first end of the coil frame (21) along the first direction; the first end of the coil frame (21) cooperates with the receiving member (10) to form a receiving cavity (01) surrounding the contact group (50) to reduce moisture around the contact group (50).

2. A relay as described in claim 1, characterized in that, The contact portion includes a moving spring (30), which is at least partially located at a first end of the coil frame (21) along a first direction; the receiving cavity (01) is provided with an inlet for the moving spring (30) to extend into; the flow area of ​​the inlet is smaller than the minimum flow area inside the receiving cavity (01).

3. A relay as described in claim 2, characterized in that, The contact group (50) includes a moving contact (51) and a stationary contact (52) respectively. The moving contact (51) has a motion component along a first direction to close or open with the stationary contact (52). The receiving member (10) is provided with a blocking block (14). The blocking block (14) forms the cavity wall at the entrance of the receiving cavity (01) and is used to limit the range of motion of the moving spring (30) along the first direction.

4. A relay as described in claim 3, characterized in that, The moving contact (51) is adapted to swing relative to the stationary contact (52) in a plane perpendicular to the second direction; the contact group (50) is located near the front side of the coil frame (21) along the third direction; the first direction, the second direction, and the third direction are orthogonal to each other; The first end of the coil frame (21) and the receiving member (10) are connected by overlapping or plugging to form a receiving cavity (01) surrounding the contact group (50), and the blocking block (14) extends along the second direction to the two opposite side walls of the receiving member (10).

5. A relay as described in claim 4, characterized in that, The contact portion further includes a stationary spring assembly (40) fixed to the stationary contact (52); the stationary spring assembly (40) is located near the front side of the coil frame (21) along a third direction and at least partially overlaps with the projection of the coil (22) on a plane perpendicular to the third direction; the receiving member (10) is provided with a second sidewall (13) near the front side of the coil frame (21) along a third direction, the second sidewall (13) protruding with an abutment block (131) adapted to abut against the coil frame (21) and / or the stationary spring assembly (40); the abutment block (131) forms the cavity wall on the front side of the receiving cavity (01).

6. A relay as described in claim 4, characterized in that, The first end of the coil frame (21) is provided with a first connecting block (214) extending in a third direction on both outer sides of the contact group (50) in the second direction; The receiving member (10) is provided with two opposing first sidewalls (12) along the second direction. The two first sidewalls (12) are respectively adapted to abut against the two opposite sides of the two first connecting blocks (214) along the second direction. The inner surface of the first sidewall (12) is also provided with a thickened block (16) adapted to abut against the first connecting block (214) along the first direction. The blocking block (14) and the rear end of the thickened block (16) are integrated. The blocking block (14) is also spaced from the first connecting block (214) along the first direction.

7. A relay as described in claim 6, characterized in that, The receiving member (10) is also provided with a second connecting block (15) at the first end facing the coil frame (21) and spaced apart from the first connecting block (214) along the first direction. The second connecting block (15) extends along the second direction and its two ends are respectively connected to two thickened blocks (16). The rear end of the second connecting block (15) is connected to the blocking block (14).

8. A relay as described in claim 4, characterized in that, The receiving member (10) includes a housing and a base (17) fixedly connected to each other, the base (17) being inserted into the coil frame (21) to form the receiving cavity (01).

9. A relay as described in claim 8, characterized in that, The base (17) is located near the front side of the coil frame (21) in a third direction; the receiving cavity (01) has only a rear end opening.

10. A relay as described in claim 9, characterized in that, The first end of the coil frame (21) is provided with a first connecting block (214) extending along a third direction on both outer sides of the contact group (50) along the second direction; the base (17) is provided with a fifth connecting block (173) protruding along the third direction, which is suitable for extending between the two first connecting blocks (214).

11. A relay as described in claim 1, characterized in that, The receiving member (10) includes a housing (18) and a base (17) fixedly connected to each other. The base (17) is inserted into the coil frame (21) to form the receiving cavity (01). The contact group (50) includes a moving contact (51) and a stationary contact (52) respectively. The moving contact (51) is adapted to swing relative to the stationary contact (52) in a plane perpendicular to the second direction so as to close or open with the stationary contact (52) by a motion component along the first direction. The contact group (50) is located near the front side of the coil frame (21) along a third direction. The first direction, the second direction, and the third direction are orthogonal to each other.

12. A relay as described in claim 8 or 11, characterized in that, The base (17) is located near the first end of the coil (22) along the first direction; the receiving cavity (01) has an opening only at the rear end.

13. A relay as described in claim 12, characterized in that, The first end of the coil frame (21) is provided with a first baffle (211) suitable for supporting the contact group (50) and a first connecting block (214) extending in a third direction on both outer sides of the contact group (50) in a second direction, the first connecting block (214) extending forward relative to the first baffle (211); the contact portion also includes a stationary spring assembly (40); the stationary spring assembly (40) is provided with a stationary lead-out terminal (42) inserted through the first connecting block (214) and extending out of the receiving member (10); The base (17) is provided with a third connecting block (171) suitable for insertion between two first connecting blocks (214), the third connecting block (171) extending in a second direction and suitable for abutting against the front end of the first retaining wall (211) and the surfaces of the two first connecting blocks (214) opposite to each other; The base (17) is also provided with a fourth connecting block (172) which is adapted to abut against the surfaces of the two first connecting blocks (214) that are opposite to each other; The two ends of the third connecting block (171) are respectively connected to the two fourth connecting blocks (172).

14. A relay as described in claim 1, characterized in that, At least a portion of the receiving cavity (01) is made of metal.

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