relay

Abstract

This utility model relates to the field of electronic control device technology, and specifically to a relay. The relay includes: an insulating cover, a first housing, and a stationary contact. Along a first direction, at least a portion of the first housing is located on one side of the insulating cover. The stationary contact includes a first portion, and the first portion has a stepped structure around its outer peripheral wall in the first direction. Along the first direction, the stepped structure includes a first surface facing the insulating cover in the first direction. A dispensing opening is formed between the outer peripheral wall of the first portion and the wall of a first through-hole. The first housing has a first region on its surface facing away from the insulating cover, the first region connecting to the wall of the first through-hole and located between the first surface and the insulating cover. Along the first direction, the wall of the first through-hole connected to the first region has an orthographic projection on the surface of the insulating cover facing the first housing. This relay, by optimizing its structure, reduces the difficulty of connecting the stationary contact to the insulating cover and reduces air residue after the potting operation, ensuring insulation withstand voltage performance.

Description

Technical Field

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

[0002] A relay is an electronic control device commonly used in automatic control circuits. It consists of a control system and a controlled system, with the control system acting as the input circuit and the controlled system as the output circuit. The function of a relay is to control a larger current with a smaller current, thereby achieving the function of "automatic switching".

[0003] A high-voltage DC relay is a type of relay that typically includes a housing, a stationary contact, and an insulating cover. The stationary contact passes through and connects to the insulating cover. After the housing and insulating cover are assembled, they need to be sealed with potting compound. For miniaturized relay products, their size is small, and correspondingly, the size of the housing, stationary contact, and insulating cover inside the relay is also small. This makes connecting the stationary contact and the insulating cover difficult. Moreover, the potting space formed between the housing, stationary contact, and insulating cover is not easily filled completely with glue, and air residue is likely to remain, which will affect the insulation performance and appearance. Utility Model Content

[0004] This utility model provides a relay that, by optimizing its own structure, can reduce the difficulty of connecting the stationary contact and the insulating cover, improve the connection effect, and reduce the air residue between the stationary contact and the first housing after the potting operation, thereby reducing the potting difficulty, reducing the amount of glue used, ensuring the insulation withstand voltage effect between the stationary contacts, and improving the aesthetics of the internal structural components of the relay after assembly.

[0005] This utility model embodiment provides a relay, including: an insulating cover, a first housing, and a stationary contact, wherein:

[0006] The first housing is provided with a first through hole for the stationary contact to pass through; along a first direction, at least a portion of the first housing is located on one side of the insulating cover, and the first direction is the direction in which the stationary contact passes through;

[0007] The stationary contact includes a first part located along the first direction on the side of the insulating cover facing the first housing, and at least a portion of the first part passes through the first through hole and is connected to the surface of the insulating cover facing the first housing; the first part has a stepped structure around its outer peripheral wall in the first direction, the stepped structure including a first surface facing the insulating cover in the first direction; and a dotted joint is formed between the outer peripheral wall of the first part and the wall of the first through hole;

[0008] The first housing has a first region on the side surface facing away from the insulating cover in the first direction. The first region is connected to the wall of the first through hole and is located between the first surface and the insulating cover. Along the first direction, the wall of the first through hole connected to the first region has an orthographic projection on the surface of the insulating cover facing the first housing.

[0009] According to some embodiments of this utility model, the distance between the outer peripheral wall of the first part and the hole wall of the first through hole is set along a direction perpendicular to the first direction to form the dispensing opening;

[0010] And / or, along the first direction, the distance between the first surface and the first region is set to form the dispensing orifice.

[0011] According to some embodiments of the present invention, the first surface is arranged parallel to a plane perpendicular to the first direction;

[0012] Alternatively, the first surface may be set at an angle to a plane perpendicular to the first direction.

[0013] According to some embodiments of the present invention, the stepped structure includes a first step, and the first surface is disposed on the step.

[0014] According to some embodiments of the present invention, the stepped structure includes multiple steps, each step having a first surface, the first region including multiple sub-regions spaced apart in the first direction, each sub-region corresponding to the first surface of the first step; and along the first direction, each sub-region is located between the first surface of the step corresponding to it and the insulating cover.

[0015] Alternatively, the stepped structure includes multiple steps, with the first step having the first surface; along the first direction, the first region is located between the first surface and the insulating cover.

[0016] According to some embodiments of the present invention, the insulating cover is provided with an exposure hole for the stationary contact to pass through; along the first direction, the insulating cover has a first outer wall on the side facing the first housing, the first outer wall connecting the hole wall of the exposure hole and the outer peripheral wall of the insulating cover surrounding the first direction.

[0017] According to some embodiments of the present invention, along the first direction, the orthographic projection of the first region onto the insulating cover at least covers at least a portion of the smallest region of the first outer wall in a plane perpendicular to the first direction.

[0018] According to some embodiments of the present invention, the first part includes a body part and a connecting part. Along the first direction, at least a portion of the body part passes through the first through hole, the connecting part is located in the first through hole, and the connecting part is connected to the side surface of the body part facing the insulating cover. The stationary contact is connected to the first outer wall through the connecting part.

[0019] The step-like structure is formed between the outer peripheral wall of the connecting part and the outer peripheral wall of the main body; and a first gap is formed between the outer peripheral wall of the connecting part and the wall of the first through hole in a direction perpendicular to the first direction.

[0020] According to some embodiments of the present invention, the wall of the first through hole is located on the side of the outer peripheral wall of the body portion away from the connecting portion.

[0021] According to some embodiments of the present invention, the first outer wall forms an annular boss that surrounds the exposed hole circumferentially along the first direction; the connecting portion is connected to the middle region of the annular boss in a direction perpendicular to the first direction.

[0022] According to some embodiments of the present invention, the first housing includes a main body and a baffle portion, the main body being provided with the first through hole; along the first direction, the baffle portion is located on the side of the main body away from the insulating cover; along a direction perpendicular to the first direction, the baffle portion is located on the side of the hole wall of the first through hole away from the stationary contact.

[0023] According to some embodiments of the present invention, a second gap is provided between the adhesive-blocking portion and the stationary contact in a direction perpendicular to the first direction, and the second gap is larger than the first gap.

[0024] According to some embodiments of the present invention, the first housing further includes a limiting part. In the first direction, the limiting part and the adhesive-blocking part are located on opposite sides of the main body. In a direction perpendicular to the first direction, the limiting part is located on the side of the hole wall of the first through hole away from the stationary contact, and the limiting part is arranged around the insulating cover.

[0025] According to some embodiments of the present invention, along a direction perpendicular to the first direction, the limiting portion contacts the outer peripheral wall of the insulating cover on one side surface facing the insulating cover.

[0026] According to some embodiments of the present invention, the stationary contact further includes a second part located inside the insulating cover and a third part passing through the exposure hole, wherein the third part connects the second part and the first part.

[0027] According to some embodiments of the present invention, along the circumference of the first direction, the first region connects the entire circumferential wall of the first through hole.

[0028] According to some embodiments of the present invention, the first region includes a plurality of sub-regions, each of the sub-regions being connected to the wall of the first through hole; the plurality of sub-regions are spaced apart along the circumferential direction of the first direction.

[0029] According to some embodiments of this utility model, the insulating cover is a ceramic cover.

[0030] According to some embodiments of this utility model, the stationary contact is brazed to the insulating cover.

[0031] According to some embodiments of the present invention, a portion of the outer peripheral wall of the first part, the hole wall of the first through hole, and the insulating cover located between the outer peripheral wall and the hole wall form an accommodating space;

[0032] The relay also includes an adhesive layer, at least partially filling the accommodating space.

[0033] According to some embodiments of the present invention, the relay further includes a second housing, which is connected to the first housing to form a placement cavity, and the insulating cover is placed inside the placement cavity.

[0034] One embodiment of the above-described utility model has at least the following advantages or beneficial effects:

[0035] 1. In the relay provided in this application, the stepped structure causes the outer peripheral wall of the first part to taper inward. For the portion of the first part where the outer peripheral wall is not tapered, this structural design ensures the conductive area of ​​the first part, preventing excessively small conductive cross-sectional area and excessive temperature rise in the plane perpendicular to the first direction. For the portion of the first part where the outer peripheral wall is tapered, this structural design reduces the local size of the first part, decreases the space occupied by the first part, and facilitates the miniaturization of the relay. Accordingly, the structural design in this application facilitates the connection of the stationary contact to the side surface of the insulating cover facing the first housing through the first part, thereby optimizing the connection position between the first part and the insulating cover, improving the connection effect, and extending the service life of the insulating cover.

[0036] Furthermore, in the relay provided in this application, a glue outlet is formed between the outer peripheral wall of the first part and the wall of the first through hole. When the position of the first region in the first direction is lower than the first surface, and the wall of the first through hole connected to the first region along the first direction has an orthographic projection on the surface of the insulating cover facing the first housing, the glue outlet position can be controlled to form a smaller space, causing glue to be squeezed out when passing through this smaller space. Accordingly, this structure facilitates glue injection during the potting operation, allowing the glue to better cover the stepped structure on the outer peripheral wall of the first part, and reducing air residue in the accommodating space formed by the first housing, stationary contact, and insulating cover. This reduces potting difficulty, reduces glue usage, and prevents excessive glue from flowing to other places and causing stress that could break the insulating cover, thus extending the service life of the insulating cover. Simultaneously, this relay improves the connection effect of the insulating cover, stationary contact, and first housing after potting, ensures the insulation withstand voltage effect between the stationary contacts, and enhances the aesthetics of the relay's internal structural components after assembly.

[0037] 2. In the relay provided in this application, a gap exists between the first part and the wall of the first through hole in a direction perpendicular to the first direction. During the connection of the first part and the insulating cover, if the stationary contact shifts, it will not easily touch the first housing. Therefore, this structural design can prevent the stationary contact from being subjected to the resisting force of the first housing when it touches it, which would be transmitted to the connection between the stationary contact and the insulating cover, causing the insulating cover to crack under long-term stress. This extends the service life of the insulating cover and improves the safety performance of the relay.

[0038] 3. In the relay provided in this application, the first surface is set at an angle to a plane perpendicular to the first direction. On the one hand, the inclined setting of the first surface can guide the adhesive. When the adhesive is poured in, the inclined surface guides its flow, making it more evenly distributed in the area to be bonded, avoiding adhesive accumulation or uneven distribution. On the other hand, the inclined design helps to reduce air residue. During the adhesive filling process, the inclined surface can guide air to be smoothly discharged along its inclined direction, thereby reducing air bubbles or gaps formed due to air retention, which can further improve the reliability and sealing of the bond.

[0039] 4. In the relay provided in this application, the first surface is arranged parallel to a plane perpendicular to the first direction. This structural design can save on manufacturing processes and reduce manufacturing costs. Of course, a small chamfer can also be present at the corner position to remove burrs and facilitate assembly. Attached Figure Description

[0040] Figure 1 The diagram shown is a three-dimensional structural schematic of the relay provided in an embodiment of the present invention;

[0041] Figure 2 What is shown is Figure 1 A partial sectional view of the intermediate relay;

[0042] Figure 3 What is shown is Figure 2 Enlarged view of point A in the middle;

[0043] Figure 4 What is shown is Figure 1 A plan view of a medium-voltage relay;

[0044] Figure 5 What is shown is Figure 4 Sectional view at point BB;

[0045] Figure 6 What is shown is Figure 5 Enlarged view of point C in the middle;

[0046] Figure 7 What is shown is Figure 1 A three-dimensional structural diagram of the inner insulating cover of the intermediate relay;

[0047] Figure 8 What is shown is Figure 7 A schematic diagram of the planar structure of the insulating cover;

[0048] Figure 9 What is shown is Figure 1 A three-dimensional structural diagram of the first housing inside the intermediate relay;

[0049] Figure 10 What is shown is Figure 9 A plan view of the first shell in the middle;

[0050] Figure 11 What is shown is Figure 10 Sectional view at point DD;

[0051] Figure 12 The diagram shown is a three-dimensional structural schematic of another first housing inside the relay provided in this embodiment of the present invention;

[0052] Figure 13 Shown Figure 12 A three-dimensional structural diagram of the first shell from another angle;

[0053] Figure 14 What is shown is Figure 12 A plan view of the first shell in the middle;

[0054] Figure 15 What is shown is Figure 14 Sectional view at EE;

[0055] Figure 16 The diagram shown is a three-dimensional structural schematic of another relay provided in an embodiment of the present invention;

[0056] Figure 17 What is shown is Figure 16 A partial sectional view of the intermediate relay;

[0057] Figure 18 What is shown is Figure 17 Enlarged view of point F in the middle;

[0058] Figure 19 What is shown is Figure 16 A plan view of a medium-voltage relay;

[0059] Figure 20 What is shown is Figure 19 Sectional view at point GG;

[0060] Figure 21 What is shown is Figure 20 Enlarged view of point H in the middle;

[0061] Figure 22 The diagram shown is a three-dimensional structural schematic of another relay provided in an embodiment of the present invention;

[0062] Figure 23 What is shown is Figure 22 A partial sectional view of the intermediate relay;

[0063] Figure 24 What is shown is Figure 23 Enlarged view of point I in the middle;

[0064] Figure 25 What is shown is Figure 22 A plan view of a medium-voltage relay;

[0065] Figure 26 What is shown is Figure 25 A cross-sectional view at point JJ;

[0066] Figure 27 What is shown is Figure 26 A magnified view of point K in the middle.

[0067] The annotations in the attached figures are explained as follows:

[0068] 100, Insulating cover; 110, Exposed hole; 120, First outer wall; 200, First housing; 210, Main body; 211, First through hole; 220, Adhesive-blocking part; 230, Limiting part; 300, Stationary contact; 310, First part; 311, Body part; 3111, First surface; 312, Connecting part; 320, Second part; 330, Third part; 400, Second housing; S1, First region. Detailed Implementation

[0069] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0070] This application provides a relay. For example... Figure 1 As shown, the relay includes: an insulating cover 100, a first housing 200, and a stationary contact 300. Please refer to... Figure 1 refer to Figure 2 and Figure 3 The structure shown includes: a first housing 200 having a first through hole 211 through which a stationary contact 300 passes; and at least a portion of the first housing 200 being located on one side of the insulating cover 100 along a first direction Z, where Z is the direction in which the stationary contact 300 passes. It should be understood that this passing direction is indicated by Z in the figures. Figure 2 and Figure 3 As shown, the stationary contact 300 includes a first portion 310. It should be understood that the first portion 310 of the stationary contact 300 is used for connection to an external circuit.

[0071] The first part 310 is located along the first direction Z on the side of the insulating cover 100 facing the first housing 200, and at least a portion of the first part 310 passes through the first through hole 211 and is connected to the surface of the insulating cover 100 facing the first housing 200. The first part 310 has a stepped structure around its outer peripheral wall in the first direction Z, and the stepped structure includes a first surface 3111 on the side of the insulating cover 100 in the first direction Z. A glue outlet is formed between the outer peripheral wall of the first part 310 and the wall of the first through hole 211 to facilitate glue pouring.

[0072] Understandably, when glue is poured into a larger space and flows into a smaller space, the glue will accumulate in the smaller space, thus achieving the effect of extrusion. Therefore, during the glue pouring operation, glue can be extruded as it passes through the nozzle.

[0073] like Figure 2 and Figure 3As shown, the stepped structure causes the outer peripheral wall of the first portion 310 to taper inward. For the portion of the first portion 310 without tapering its outer peripheral wall, this structural design ensures the conductive area of ​​the first portion 310, preventing excessively small conductive cross-sectional area and excessive temperature rise in the plane perpendicular to the first direction Z. For the portion of the first portion 310 with tapered outer peripheral wall, this structural design reduces the local size of the first portion 310, reduces the space occupied by the first portion 310, and facilitates miniaturization of the relay. Accordingly, the structural design in this application facilitates the connection of the stationary contact 300 to the surface of the insulating cover 100 facing the first housing 200 through the first portion 310, optimizes the connection position between the first portion 310 and the insulating cover 100, improves the connection effect, and extends the service life of the insulating cover 100.

[0074] like Figure 3 As shown, the first housing 200 has a first region S1 on its surface facing away from the insulating cover 100 in the first direction Z. The first region S1 is connected to the wall of the first through hole 211, and the first region S1 is located between the first surface 3111 and the insulating cover 100. When assembling the relay provided in this embodiment, the insulating cover 100 and the first housing 200 are first assembled to a preset position, and then potting is performed. Figure 3 As shown, along the first direction Z, the first region S1 is located between the first surface 3111 and the insulating cover 100, that is, the position of the first region S1 in the first direction Z is lower than the first surface 3111.

[0075] like Figure 3 As shown, along the first direction Z, the wall of the first through hole 211 connected to the first region S1 has an orthographic projection on the surface of the insulating cover 100 facing the first housing 200. Accordingly, along a direction perpendicular to the first direction Z, the distance between the wall of the first through hole 211 connected to the first region S1 and the first portion 310 will not be too large.

[0076] It is worth noting that, along the direction perpendicular to the first direction Z, if the distance between the hole wall of the first through hole 211 connected to the first region S1 and the first part 310 is too large, it will cause the accommodating space formed by the first housing 200, the stationary contact 300 and the insulating cover 100 to be too large, the amount of glue used will increase, and the excessive glue will easily flow to other places to generate stress and cause the insulating cover 100 to crack, affecting the service life of the insulating cover 100.

[0077] Furthermore, the first region S1 can effectively perform the extrusion function during the glue-pouring process. Compared with the structure in related technologies, the relay provided in this application embodiment, by setting the position of the first region S1 in the direction perpendicular to the first direction Z, can shift the flow path of the glue towards the first surface 3111 of the stepped structure, making it easier for the glue to cover the stepped structure during the glue-pouring process.

[0078] It should be noted that in the relay provided in this application embodiment, a dispensing nozzle is formed between the outer peripheral wall of the first part 310 and the wall of the first through hole 211. When the position of the first region S1 in the first direction Z is set lower than the first surface 3111, and the wall of the first through hole 211 connected to the first region S1 along the first direction Z is set to have an orthographic projection on the surface of the insulating cover 100 facing the first housing 200, the dispensing nozzle position can be controlled to form a smaller space, so that the glue will be squeezed out when passing through the smaller space. Accordingly, this structure is set to facilitate glue injection during the glue-drinking operation, so that the glue can better cover the stepped structure on the outer peripheral wall of the first part 310, and can reduce the air residue in the accommodating space formed by the first housing 200, the stationary contact 300 and the insulating cover 100, reduce the glue-drinking difficulty, reduce the amount of glue used, and prevent excessive glue from flowing to other places and causing stress that could cause the insulating cover 100 to break, thereby improving the service life of the insulating cover 100. Meanwhile, the relay can improve the connection effect of the insulating cover 100, the stationary contact 300 and the first housing 200 after potting, and ensure the insulation withstand voltage effect between the stationary contacts 300, thereby improving the aesthetics of the internal structural components of the relay after assembly.

[0079] When manufacturing the relay provided in the embodiments of this application, the structure or setting position of the first part 310 and the first through hole 211 can be adjusted to form a dispensing port.

[0080] In one specific embodiment, the distance between the outer peripheral wall of the first portion 310 and the wall of the first through hole 211 is set along a direction perpendicular to the first direction Z to form a dispensing opening.

[0081] It is worth noting that, along a direction perpendicular to the first direction Z, there is a gap between the first portion 310 and the wall of the first through hole 211. During the connection of the first portion 310 and the insulating cover 100, if the stationary contact 300 shifts, it will not easily come into contact with the first housing 200. Therefore, this structural design can prevent the stationary contact 300 from being subjected to the pushing force of the first housing 200 when it comes into contact with it, which would be transmitted to the connection point between the stationary contact 300 and the insulating cover 100, causing the insulating cover 100 to crack under long-term stress. This extends the service life of the insulating cover 100 and improves the safety performance of the relay.

[0082] In another specific embodiment, the distance between the first surface 3111 and the first region S1 along the first direction is set to form a dispensing opening.

[0083] Of course, the structural settings of the two specific embodiments described above can also be used simultaneously to form a dispensing port, which will not be elaborated further.

[0084] When setting the stationary contact 300, there are multiple possibilities for the arrangement of the first surface 3111 within the first part 310, at least one of the following arrangements.

[0085] In one embodiment, such as Figure 6 as well as Figures 16 to 21 As shown, the first surface 3111 is set at an angle to the plane perpendicular to the first direction Z. If the plane perpendicular to the first direction Z is defined as a horizontal plane, then the first surface 3111 is an inclined plane.

[0086] It should be noted that, on the one hand, the inclined design of the first surface 3111 guides the adhesive. When the adhesive is poured in, the inclined surface guides its flow, ensuring a more even distribution across the bonding area and preventing adhesive buildup or uneven distribution. On the other hand, the inclined design helps reduce air residue. During adhesive filling, the inclined surface guides air to escape smoothly along its inclined direction, reducing air bubbles or voids formed due to air retention, further improving the reliability and sealing of the bond.

[0087] In another embodiment, such as Figures 22 to 27 As shown, the first surface 3111 is arranged parallel to a plane perpendicular to the first direction Z. If the plane perpendicular to the first direction Z is defined as a horizontal plane, then the first surface 3111 is also a horizontal plane.

[0088] It should be noted that in this embodiment, the first surface 3111 forms a right angle with the corner of the adjacent surface forming the stepped structure. This structural design can save on manufacturing processes and reduce manufacturing costs. Of course, the corner can also have a small chamfer to remove burrs and facilitate assembly.

[0089] When setting the stationary contact 300, there are multiple possibilities for the structure of the first part 310 inside the stationary contact 300, at least one of the following structural forms.

[0090] Structural Form 1: such as Figures 1 to 3 As shown, the stepped structure includes a single step, and a first surface 3111 is disposed on this step. It is worth noting that, as... Figure 3 As shown, along the first direction Z, if the side surface of the insulating cover 100 facing the first housing 200 is defined as the bottom surface, then the height of the first region S1 in the penetration direction Z is lower than the height of the first surface 3111, so as to form a smaller space between the first region S1 and the first surface 3111 for extrusion.

[0091] Structural Form 2: The stepped structure includes multiple steps, each step having a first surface 3111. The first region S1 includes multiple sub-regions spaced apart in the first direction Z, each sub-region corresponding to the first surface 3111 of a step; and along the first direction Z, each sub-region is located between the first surface 3111 of its corresponding step and the insulating cover 100.

[0092] It is worth noting that when the stepped structure includes multiple steps, each step in the multiple steps has a surface on the side of the first part 310 facing the insulating cover 100 in the first direction Z, and each surface serves as the first surface 3111.

[0093] Correspondingly, the first housing 200 also forms a stepped structure at the first through hole 211. Each step in the stepped structure has a first region S1 on the side of the first housing 200 away from the insulating cover 100 in the first direction Z. Each first region S1 corresponds to a first surface 3111, and the height of the first region S1 in the Z direction through which the stationary contact 300 passes is lower than the corresponding first surface 3111.

[0094] Structural Form 3: The stepped structure includes multiple steps. Only one step in the multi-step structure has a first surface 3111; along the first direction Z, the first region S1 is located between the first surface 3111 and the insulating cover 100.

[0095] It is worth noting that when the stepped structure includes multiple steps, each step in the multiple steps has a surface on the side of the first portion 310 facing the insulating cover 100 in the first direction Z, and one of the multiple surfaces is designated as the first surface 3111. When setting the first housing 200, it is only necessary to control that: along the first direction Z, the first region S1 is located between the first surface 3111 and the insulating cover 100, so as to form a small space between the first region S1 and the first surface 3111 for extrusion.

[0096] In one embodiment, such as Figure 7 and Figure 8 As shown, the insulating cover 100 is provided with an exposure hole 110 for the stationary contact 300 to pass through; along the first direction Z, the insulating cover 100 has a first outer wall 120 on the side facing the first housing 200, and the first outer wall 120 connects the hole wall of the exposure hole 110 and the outer peripheral wall of the insulating cover 100 surrounding the first direction Z.

[0097] In one embodiment, please combine Figure 8 , Figure 9 refer to Figure 3 and Figure 4The structure shown has a first region S1 projected onto the insulating cover 100 along the first direction Z, which at least covers a portion of the smallest area of ​​the first outer wall 120 in the plane perpendicular to the first direction Z. This is to seal the part most prone to glue leakage through the first housing 200, reduce the possibility of glue flowing to the side wall of the insulating cover 100, and thus improve the service life of the insulating cover 100.

[0098] In one specific embodiment, please refer to Figure 7 and Figure 8 refer to Figures 9 to 10 The structure shown has a first region S1 projected onto the insulating cover 100 along the first direction Z, which covers at least a portion of the smallest region of the first outer wall 120 in the plane perpendicular to the first direction Z.

[0099] In one embodiment, please combine Figure 3 refer to Figures 4 to 6 The structure shown includes a first part 310 comprising a body part 311 and a connecting part 312. Along the first direction Z, at least a portion of the body part 311 passes through the first through hole 211. The connecting part 312 is located within the first through hole 211 and is connected to the side surface of the body part 311 facing the insulating cover 100. The stationary contact 300 is connected to the first outer wall 120 through the connecting part 312.

[0100] It is understandable that, such as Figure 6 As shown, to better understand the technical solution in this application, the main body 311 and the connecting part 312 are schematically separated by dashed lines. A stepped structure is formed between the outer peripheral wall of the connecting part 312 and the outer peripheral wall of the main body 311. It can be understood that this design is equivalent to shrinking the connecting part 312 inward, which optimizes the connection position between the connecting part 312 and the insulating cover 100, improves the connection effect, and thus enhances the stability of the connection relationship and extends the service life of the structural components.

[0101] Please continue to refer to this. Figure 6 The structure shown has a first gap between the outer peripheral wall of the connecting part 312 and the hole wall of the first through hole 211 along a direction perpendicular to the first direction Z. This first gap is used to accommodate glue so that an adhesive layer is formed after the glue cures, effectively connecting the stationary contact 300, the insulating cover 100 and the first housing 200.

[0102] It is worth noting that if the first gap is too large or too small, it will affect the filling of the adhesive layer, and the gap value of the first gap needs to be designed reasonably. Moreover, the first gap is not a fixed value; the first gap between the outer peripheral wall of the connecting part 312 and the hole wall of the first through hole 211 at different locations can be the same or different.

[0103] In one embodiment, such as Figure 3As shown, the wall of the first through hole 211 is located on the side of the outer peripheral wall of the body part 311 away from the connecting part 312, so that the extrusion action can be better completed during the glue pouring operation. Specifically, the structural arrangement in this embodiment allows the glue to be better injected and cover the stepped structure provided in the first part 310, which can reduce the air residue in the accommodating space formed by the first part 310, the stationary contact 300 and the insulating cover 100, reduce the difficulty of glue pouring and facilitate assembly.

[0104] Of course, it can also be configured such that the wall of the first through hole 211 is flush with the side of the outer peripheral wall of the body part 311 away from the connecting part 312 along the direction perpendicular to the first direction Z, which will not be described in detail here.

[0105] In one embodiment, such as Figure 7 As shown, the first outer wall 120 forms an annular boss that circumferentially surrounds the exposure hole 110 along the first direction Z. Please refer to... Figure 7 refer to Figure 6 The structure shown has a connecting part 312 connected to the middle region of the annular boss along a direction perpendicular to the first direction Z.

[0106] It should be noted that the structural configuration in this embodiment ensures that when the first part 310 is connected to the insulating cover 100, the stress on the annular boss is balanced in all directions in the plane perpendicular to the first direction Z, which can prevent the insulating cover 100 from breaking due to uneven stress and improve product yield.

[0107] In one embodiment, such as Figure 6 As shown, the first housing 200 includes a main body 210 and a baffle 220. The main body 210 is provided with a first through hole 211. Along the first direction Z, the baffle 220 is located on the side of the main body 210 away from the insulating cover 100. Along the direction perpendicular to the first direction Z, the baffle 220 is located on the side of the hole wall of the first through hole 211 away from the stationary contact 300.

[0108] It should be noted that the glue-blocking part 220 can, to a certain extent, prevent the glue from overflowing in a direction perpendicular to the first direction Z, so as to ensure that the glue enters the accommodating space through the smaller space formed between the first part 310 and the first housing 200 as much as possible, which can reduce the difficulty of glue filling and improve the glue filling efficiency.

[0109] In one embodiment, please refer to... Figure 6In the structure shown, a second gap is provided between the glue-blocking portion 220 and the stationary contact 300 along a direction perpendicular to the first direction Z. This second gap is larger than the first gap. Similarly, the second gap is not a fixed value; the size of the second gap between different parts of the stationary contact 300 and the glue-blocking portion 220 along the direction perpendicular to the first direction Z can be the same or different. However, it is necessary to ensure that the second gap is larger than the first gap to further create a difference in gap size, facilitating glue extrusion during the glue-pouring operation and improving the glue-pouring effect.

[0110] In one embodiment, please refer to... Figure 6 As shown in the structure, the first housing 200 also includes a limiting portion 230. Along the first direction Z, the limiting portion 230 and the adhesive-blocking portion 220 are located on opposite sides of the main body 210. Along a direction perpendicular to the first direction Z, the limiting portion 230 is located on the side of the hole wall of the first through hole 211 away from the stationary contact 300, and the limiting portion 230 is arranged around the insulating cover 100. Accordingly, the limiting portion 230 can reduce the possibility of the first housing 200 and the insulating cover 100 moving in a direction perpendicular to the first direction Z, so as to ensure that each structural component is assembled in place and enhance the potting effect.

[0111] In one embodiment, along the first direction Z, the side surface of the main body 210 facing the insulating cover 100 contacts the insulating cover 100 to block the glue during the glue pouring operation, so as to prevent the glue from flowing from the gap between the main body 210 and the insulating cover 100 to the side wall of the insulating cover 100 during the glue pouring operation, thereby causing stress and causing it to crack.

[0112] Of course, considering the manufacturing error of the insulating cover 100, after the first housing 200 and the insulating cover 100 are assembled, there may be a gap between the main body 210 and the insulating cover 100 in the first direction Z. However, the size of the gap should not be too large to avoid excessive glue flowing to the side wall of the insulating cover 100.

[0113] In one embodiment, along a direction perpendicular to the first direction Z, the limiting portion 230 contacts the outer peripheral wall of the insulating cover 100 on one side surface facing the insulating cover 100, so as to block the glue during the glue pouring operation and prevent the glue from flowing from the gap between the main body portion 210 and the insulating cover 100 to the side wall of the insulating cover 100 during the glue pouring operation, thereby causing stress and causing it to break.

[0114] Of course, considering the manufacturing error of the insulating cover 100, after the first housing 200 and the insulating cover 100 are assembled, there may be a gap between the main body 210 and the insulating cover 100 in the direction perpendicular to the first direction Z. However, the size of the gap should not be too large to avoid excessive glue flowing to the side wall of the insulating cover 100.

[0115] In one embodiment, such as Figure 6As shown, the stationary contact 300 also includes a second portion 320 located within the insulating cover 100 and a third portion 330 passing through the exposure hole 110, the third portion 330 connecting the second portion 320 and the first portion 310. For example, Figure 6 The first part 310, the second part 320, and the third part 330 are separated by dashed lines. The second part 320 is used to form the contact end of the stationary contact 300 for contacting or separating from the moving contact.

[0116] like Figure 4 As shown, as an example, there are two stationary contacts 300, and they are spaced apart. Figure 7 As shown, the insulating cover 100 has two exposure holes 110. Two stationary contacts 300 are respectively inserted into the corresponding exposure holes 110.

[0117] Alternatively, in another specific embodiment, compared to Figures 9 to 11 The structure shown is as follows: Figures 12 to 15 As shown, along the circumferential direction Z, the first region S1 connects the entire perimeter of the first through hole 211. It should be understood that... Figures 12 to 14 The first region S1 is schematically divided by a dashed line.

[0118] It should be noted that, along the direction perpendicular to the first direction Z, the first housing 200 can be squeezed into a smaller space from various directions to fit with the first surface 3111, so that the glue can be effectively injected into each position during the glue pouring operation. The squeezing phenomenon can better cover the stepped structure, thereby improving the bonding effect of the glue layer to the first part 310 and reducing the air residue in the accommodating space.

[0119] Alternatively, in another embodiment, the first region S1 includes a plurality of sub-regions, each sub-region being connected to the wall of the first through hole 211; the plurality of sub-regions are spaced apart along the circumferential direction of the first direction Z, so that in a plane perpendicular to the first direction Z, the first housing 200 can be controlled to fit with the first surface 3111 from multiple directions to form a smaller space for extrusion.

[0120] It is worth noting that the number of sub-regions can be set according to needs, and the location of the sub-regions can also be adjusted as needed. In addition, the spacing between adjacent sub-regions can be the same or different, and the extension length of different sub-regions can be the same or different.

[0121] In addition, it should be noted that the gap between adjacent sub-regions in this application embodiment can also be used as a glue injection port to reduce the difficulty of glue injection operation and increase the glue injection rate.

[0122] In one embodiment, the insulating cover 100 is a ceramic cover. This insulating cover 100 has high insulation performance, high stability, and high temperature resistance, which can improve the safety performance of the relay.

[0123] In one embodiment, the stationary contact 300 is brazed to the insulating cover 100. It should be understood that this brazing connection makes the connection between the first part 310 and the insulating cover 100 more robust and able to withstand greater mechanical stress; at the same time, the solder joint layer formed by brazing can effectively prevent leakage and improve the sealing performance of the relay.

[0124] In one embodiment, such as Figure 6 As shown, the outer peripheral wall of the first part 310, the hole wall of the first through hole 211, and the insulating cover 100 located between the outer peripheral wall and the hole wall form an accommodating space.

[0125] It is worth noting that after assembling the insulating cover 100 and the first housing 200 provided in this application embodiment, a potting operation is required to effectively fill the gaps and seal them. After the potting process, the adhesive will solidify to form an adhesive layer. Accordingly, the relay provided in this application embodiment also includes an adhesive layer, at least partially filling the accommodating space.

[0126] It should be noted that the adhesive layer formed after curing has excellent insulating properties. After potting, the adhesive layer can form a sealed protective layer to protect the internal structure of the relay.

[0127] In one embodiment, such as Figure 1 As shown, the relay provided in this application embodiment also includes a second housing 400, which is connected to the first housing 200 to form a placement cavity, and the insulating cover 100 is placed in the placement cavity.

[0128] It is worth noting that, Figure 1 The first housing 200 shown is a cover structure, and the second housing 400 is a cover structure. Of course, the structures of the first housing 200 and the second housing 400 are not limited to these. Figure 1 As shown, the first housing 200 can also be configured as a cover structure and the second housing 400 as a cover plate, which will not be elaborated further.

[0129] As an example, the first housing 200 and the second housing 400 engage to form a placement cavity. This cavity can be used to accommodate the sealing unit. It is understood that the sealing unit includes the aforementioned insulating cover 100 and stationary contact 300. The sealing unit also includes a moving contact and an elastic element, wherein the moving contact is disposed within the insulating cover 100, and its two ends are movable relative to the stationary contact 300 to contact or separate the contact end of the stationary contact 300; the elastic element is disposed on the side of the moving contact facing away from the stationary contact 300 to provide pressure for the contact between the moving contact and the stationary contact 300.

[0130] Finally, it should be noted that the various embodiments / implementations provided by this utility model can be combined with each other without creating contradictions, and will not be described in detail here.

[0131] In the embodiments of the utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the utility model according to the specific circumstances.

[0132] In the description of the utility model embodiments, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the utility model embodiments and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model embodiments.

[0133] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0134] The above are merely preferred embodiments of the utility model and are not intended to limit the utility model. For those skilled in the art, various modifications and variations can be made to the utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the utility model should be included within the protection scope of the utility model.

Claims

1. A relay, characterized in that, include: The insulating cover, the first housing, and the stationary contact, wherein: The first housing is provided with a first through hole for the stationary contact to pass through; Along a first direction, at least a portion of the first housing is located on one side of the insulating cover, and the first direction is the penetration direction of the stationary contact; The stationary contact includes a first part located along the first direction on the side of the insulating cover facing the first housing, and at least a portion of the first part passes through the first through hole and is connected to the surface of the insulating cover facing the first housing; the first part has a stepped structure around its outer peripheral wall in the first direction, the stepped structure including a first surface facing the insulating cover in the first direction; and a dotted joint is formed between the outer peripheral wall of the first part and the wall of the first through hole; The first housing has a first region on the side surface facing away from the insulating cover in the first direction. The first region is connected to the wall of the first through hole and is located between the first surface and the insulating cover. Along the first direction, the wall of the first through hole connected to the first region has an orthographic projection on the surface of the insulating cover facing the first housing.

2. The relay according to claim 1, characterized in that, Along a direction perpendicular to the first direction, the distance between the outer peripheral wall of the first portion and the hole wall of the first through hole is set to form the dispensing orifice; And / or, along the first direction, the distance between the first surface and the first region is set to form the dispensing orifice.

3. The relay according to claim 1, characterized in that, The first surface is arranged parallel to a plane perpendicular to the first direction; Alternatively, the first surface may be set at an angle to a plane perpendicular to the first direction.

4. The relay according to claim 3, characterized in that, The stepped structure includes a first step, and the first surface is disposed on the step.

5. The relay according to claim 3, characterized in that, The stepped structure includes multiple steps, each step having the first surface, and the first region including multiple sub-regions spaced apart in the first direction, each sub-region corresponding to the first surface of the first step; and along the first direction, each sub-region is located between the first surface of its corresponding step and the insulating cover; Alternatively, the stepped structure may include multiple steps, with the first step having the first surface. Along the first direction, the first region is located between the first surface and the insulating cover.

6. The relay according to claim 1, characterized in that, The insulating cover has an exposure hole through which the stationary contact passes; along the first direction, the insulating cover has a first outer wall on the side facing the first housing, the first outer wall connecting the hole wall of the exposure hole and the outer peripheral wall of the insulating cover surrounding the first direction.

7. The relay according to claim 6, characterized in that, Along the first direction, the first region, in its orthographic projection onto the insulating cover, at least covers a portion of the smallest region of the first outer wall in a plane perpendicular to the first direction.

8. The relay according to claim 6, characterized in that, The first part includes a body part and a connecting part. Along the first direction, at least a portion of the body part passes through the first through hole. The connecting part is located in the first through hole and is connected to the side surface of the body part facing the insulating cover. The stationary contact is connected to the first outer wall through the connecting part. The step-like structure is formed between the outer peripheral wall of the connecting part and the outer peripheral wall of the main body; and a first gap is formed between the outer peripheral wall of the connecting part and the wall of the first through hole in a direction perpendicular to the first direction.

9. The relay according to claim 8, characterized in that, The wall of the first through hole is located on the side of the outer peripheral wall of the body portion away from the connecting portion.

10. The relay according to claim 8, characterized in that, The first outer wall forms an annular boss that surrounds the exposed hole circumferentially along the first direction; the connecting portion is connected to the middle region of the annular boss in a direction perpendicular to the first direction.

11. The relay according to claim 8, characterized in that, The first housing includes a main body and a baffle portion. The main body is provided with the first through hole. Along the first direction, the baffle portion is located on the side of the main body away from the insulating cover. Along a direction perpendicular to the first direction, the baffle portion is located on the side of the hole wall of the first through hole away from the stationary contact.

12. The relay according to claim 11, characterized in that, Along a direction perpendicular to the first direction, a second gap is provided between the adhesive-blocking portion and the stationary contact, and the second gap is larger than the first gap.

13. The relay according to claim 11, characterized in that, The first housing further includes a limiting part, which is located on opposite sides of the main body in the first direction and the adhesive blocking part in the first direction; the limiting part is located on the side of the hole wall of the first through hole away from the stationary contact in the direction perpendicular to the first direction, and the limiting part is arranged around the insulating cover.

14. The relay according to claim 13, characterized in that, Along a direction perpendicular to the first direction, the limiting portion contacts the outer peripheral wall of the insulating cover on one side surface facing the insulating cover.

15. The relay according to claim 6, characterized in that, The stationary contact also includes a second part located inside the insulating cover and a third part passing through the exposure hole, the third part connecting the second part and the first part.

16. The relay according to any one of claims 1-15, characterized in that, Along the circumference of the first direction, the first region connects the entire perimeter of the first through hole.

17. The relay according to any one of claims 1-15, characterized in that, The first region includes multiple sub-regions, each of which is connected to the wall of the first through hole; the multiple sub-regions are spaced apart along the circumferential direction of the first direction.

18. The relay according to any one of claims 1-15, characterized in that, The insulating cover is a ceramic cover.

19. The relay according to claim 18, characterized in that, The stationary contact is brazed to the insulating cover.

20. The relay according to any one of claims 1-15, characterized in that, The outer peripheral wall of the first portion, the hole wall of the first through hole, and the insulating cover located between the outer peripheral wall and the hole wall form an accommodating space; The relay also includes an adhesive layer, at least partially filling the accommodating space.

21. The relay according to any one of claims 1-15, characterized in that, The relay further includes a second housing, which is connected to the first housing to form a placement cavity, and the insulating cover is placed inside the placement cavity.

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