Liquid-cooled relay

Abstract

A liquid-cooled relay comprises a relay assembly, a base and a shell, the relay assembly is installed on the base and provided with a plurality of leading-out pins, the shell is arranged outside the relay assembly and the base in a sleeving mode, an opening is formed in the side, opposite to the back face of the base, of the shell, and the shell is a single-layer shell. A lengthened distance exists between the end face where the opening of the shell is located and the back face of the base to form an empty groove, the empty groove is filled with a sealing body, and the sealing body completely covers the back face of the base. A plurality of leading-out pins of the relay assembly penetrate through the sealing body, and the sealing body is in sealing fit with the leading-out pins. According to the utility model, the sealing performance of a product is met, and the volume of the product is minimized, so that the requirement of a customer on overall miniaturization is met.

Description

Technical Field

[0001] The utility model relates to the field of relays, in particular to a liquid-cooled relay. Background Art

[0002] With the rapid development of the Internet, the rapid growth of energy consumption has become an issue that cannot be ignored in the development of the data center industry. The full launch of the "Eastern Data and Western Computing" project and the proposal of the "dual carbon" goal have become a strong driving force for energy conservation and consumption reduction in data centers. The use of liquid cooling technology is the current development trend, especially immersion liquid cooling can better meet the needs of energy conservation and consumption reduction. Correspondingly, the relays used inside it also need to meet the requirements of the liquid cooling environment, and in some occasions, the size of the liquid cooling relay is required to be as small as possible.

[0003] See also Figure 1 and Figure 2 Conventional non-liquid-cooled relays usually use a sealant thermosetting sealant between the opening side of the base and the shell. The sealant layer is relatively thin, which cannot meet the working environment requirements of immersion liquid cooling. Therefore, liquid-cooled electromagnetic relays have emerged, which use a double-layer shell to isolate the influence of external liquid on the inside of the relay. Generally, it is composed of an inner core relay (including the shell structure), external lead pins, a bottom plate, a shell, etc., using a double shell, or setting the shell into a double-layer structure. With this double-layer structure, the assembly process is complicated, and the overall volume of the relay is relatively large. Utility Model Content

[0004] The main purpose of the utility model is to overcome the defects and propose a liquid-cooled relay, which adopts a single-layer shell structure to meet the sealing performance of the product while minimizing the product volume to meet the demand of overall miniaturization.

[0005] The utility model adopts the following technical solutions:

[0006] A liquid-cooled relay comprises a relay assembly, a base and a shell, wherein the relay assembly is mounted on the base and is provided with a plurality of lead pins, the shell is sleeved outside the relay assembly and the base and is provided with an opening on the side opposite to the back of the base, and is characterized in that: the shell is a single-layer shell, and there is an extended distance between the end face where the opening of the shell is located and the back of the base to form an empty groove, the empty groove is filled with a sealing body, and the sealing body completely covers the back of the base; the plurality of lead pins of the relay assembly pass through the sealing body, and the sealing body and the lead pins are in a sealed fit.

[0007] Furthermore, the opening of the shell is surrounded by an extension portion extending outward relative to the base, the extension portion and the base form the empty groove, and the sealing body seals and covers the inner wall of the extension portion.

[0008] Furthermore, the thickness of the sealing body is the same as the lengthened distance.

[0009] Furthermore, a ventilation hole is provided on a side of the shell opposite to the opening, and the ventilation hole is sealed by hot sealing.

[0010] Furthermore, the relay assembly includes a magnetic circuit part, a moving spring part, a static spring part, an armature and a push card; the magnetic circuit part is fixed on the base to generate magnetic force when energized, and the magnetic circuit part is provided with a coil lead-out pin; the armature is located on the magnetic circuit part and can be moved under the action of magnetic force; the moving spring part is inserted into the base and is provided with a moving contact; the static spring part is grooved in the base and is provided with a static contact, and the static contact is opposite to the moving contact; the push card is connected between the armature and the moving spring part to drive the moving contact to move and to engage or separate with the static contact under the action of the armature.

[0011] Furthermore, a plurality of side panels are provided on the front side of the base, and the plurality of side panels are provided on different sides in the width direction of the base to form a mounting groove with the base, the magnetic circuit portion is partially located in the mounting groove and is provided with a coil group, an iron core and a yoke, the iron core is passed through the coil group and is arranged along the height direction of the base, the yoke is located on one side of the coil group and is arranged along the height direction of the base; one end of the armature is arranged in the mounting groove and outside the yoke, and the other end is bent and opposite to one end of the iron core in the axial direction; the push card end is inserted into the mounting groove to be connected to the corresponding end of the armature.

[0012] Furthermore, a partition plate is provided on the front side of the base, and a first partition portion extending along the width direction of the base is provided on one side of the partition plate, wherein a bending portion extending along the width direction is correspondingly provided on the side of the side plate opposite to the first partition portion, and the bending portion and the first partition portion are spaced apart to form a first slot, and the first slot extends along the height direction of the base, and a second slot extending along the length direction is provided between the bottom of the side plate where the bending portion is located and the base, and the second slot is connected to the first slot, and the first slot and the second slot have an opening on one side in the width direction of the base for partially inserting and limiting the dynamic spring assembly; the base is also provided with a first through hole connected to the second slot.

[0013] Furthermore, the dynamic spring part includes a dynamic spring sheet, which is inserted into the first slot, and one end of the dynamic spring sheet is provided with a bending portion to be inserted into the second slot, and the end of the bending portion is provided with a dynamic spring lead-out pin to pass through the first through hole; the other end of the dynamic spring sheet is provided with the dynamic contact; and the sealing body closes the gap between the dynamic spring lead-out pin and the first through hole.

[0014] Furthermore, it also includes a baffle, which is located outside the other side of the partition plate and extends along the width direction of the base; the partition plate is provided with a second partition portion extending along the width direction of the base on the side opposite to the baffle to form a third slot with the baffle; the third slot has an opening on one side in the width direction of the base for the static spring part to be inserted and limited; the base is also provided with a second through hole connected to the third slot.

[0015] Furthermore, the static spring part includes a static spring sheet, which is inserted into the third slot, and one end of the static spring sheet is provided with a static spring lead-out pin to pass through the second through hole; the other end of the static spring sheet is provided with the static contact; and the sealing body closes the gap between the static spring lead-out pin and the second through hole.

[0016] It can be seen from the above description of the utility model that compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. In the utility model, there is an extended distance between the end face where the opening of the shell is located and the back side of the base to form an empty groove, the empty groove is filled with a sealing body, the sealing body completely covers the back side of the base, and several lead pins of the relay assembly pass through the sealing body, and the sealing body and the lead pins are sealed to ensure that the sealing body is sufficient to cover the relay part, thereby ensuring the sealing performance between the base and the shell and the lead pins, and preventing external liquid from infiltrating into the interior of the relay; the shell is a single-layer shell, and compared with the two-layer shell method, the volume is significantly reduced, which is conducive to the miniaturization of the client control board.

[0018] 2. In the utility model, the periphery of the shell opening serves as an extension portion extending outward relative to the base, and the hollow groove is formed by the extension portion and the base. The sealing body also completely seals and covers the inner wall of the extension portion to ensure sealing performance. The production process is simple and the cost is low.

[0019] 3. In the present invention, after the empty groove of the base is filled with glue, it is cured to form a sealed body, and then the vent hole is heat-sealed. After the vent hole is heat-sealed, a layer of glue can be applied around the vent hole for sealing.

[0020] 4. In the utility model, the front of the base is surrounded by a plurality of side panels to form an installation groove to accommodate and position the magnetic circuit part; the base is also provided with a first slot and a second slot, and the first slot and the second slot have openings for the movable spring assembly part to be inserted and limited from the side, so that the installation is convenient; the base is also provided with a first through hole connected with the second slot for the movable spring pin to pass through, and the sealing body also seals the gap between the movable spring pin and the first through hole to prevent liquid from penetrating into the interior of the relay.

[0021] 5. In the utility model, a baffle is also provided on the base, and the baffle cooperates with the partition plate to form a third slot. The third slot has an opening for the static spring part to be inserted and limited from the side, which is convenient for installation; the base also has a second through hole connected to the third slot for the static spring pin to pass through, and the sealing body also seals the gap between the static spring pin and the second through hole to prevent liquid from penetrating into the interior of the relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the structural diagram of the existing conventional relay;

[0023] Figure 2 for Figure 1 Bottom view of

[0024] Figure 3 The utility model relay;

[0025] Figure 4 for Figure 3 Cross-sectional view (empty groove not filled with seal);

[0026] Figure 5 for Figure 3 Cross-sectional view (empty groove filled with seal);

[0027] Figure 6 for Figure 5 Bottom view of

[0028] Figure 7 It is the structural diagram of the relay assembly;

[0029] Figure 8 This is the shell structure diagram;

[0030] Fig. 9 This is the base structure diagram;

[0031] Fig.10 It is the structural diagram of the dynamic spring part;

[0032] Fig.11 It is the structural diagram of the static spring part;

[0033] Fig.12 To promote the card structure diagram;

[0034] in:

[0035] 10. Magnetic circuit part; 11. Coil group; 12. Iron core; 13. Yoke; 14. Coil lead pin; 20. Moving spring part; 21. Moving contact; 22. Moving spring lead pin; 23. Moving spring piece; 30. Static spring part; 31. Static contact; 32. Static spring lead pin; 33. Compression spring; 34. Static spring piece; 40. Armature; 50. Push card; 51. Head; 52. Opening; 60. Sealing body; 70. Base; 71. Side plate; 72. Partition plate; 72a. First partition part; 73. Mounting groove; 74. Bending part; 75. First slot; 76. Second slot; 76a. First through hole; 77. Baffle; 78. Third slot; 78a. Second through hole; 79. Second partition part; 80. Shell; 81. Empty slot; 82. Air vent; 83. Extension part. DETAILED DESCRIPTION

[0036] The present invention is further described below through specific implementation methods.

[0037] The terms "first" and "second" appearing in the present invention are only for the convenience of description to distinguish different components with the same name, and do not indicate a sequence or primary and secondary relationship.

[0038] In the description of the present invention, the directions or positional relationships indicated by “up”, “down”, “left”, “right”, “front” and “back” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention. They do not indicate or imply that the device referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention.

[0039] In addition, in the description of this application, unless otherwise specified, "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0040] See also Figure 3-Figure 12 A liquid-cooled relay includes a relay assembly, a base 70, a housing 80, etc. The relay assembly is mounted on the front of the base 70 and is provided with a plurality of lead pins. The housing 80 is a single-layer housing 80, which is sleeved outside the relay assembly and the base 70 and has an opening on the side opposite to the back of the base 70. There is an extended distance between the end face where the opening of the housing 80 is located and the back of the base 70 to form an empty groove 81, and the empty groove 81 is filled with a sealing body 60, and the sealing body 60 completely covers the back of the base 70; a plurality of lead pins of the relay assembly pass through the sealing body 60, and the sealing body 60 and the lead pins are in a sealed fit.

[0041] The extended distance refers to the distance between the opening end face of the housing 80 and the back face of the base 70 being extended relative to the conventional distance, so that the formed empty groove 81 is deep enough and the thickness of the filled sealing body 60 is thick enough to meet the sealing requirements of working in a liquid cooling environment. The opening of the housing 80 is surrounded by an extension 83 extending outward relative to the base 70, and the extension 83 and the base 70 form an empty groove 81, and the sealing body 60 seals and covers the inner wall of the extension 83.

[0042] In practical applications, the sealing body 60 is a structure formed by covering with glue. The thickness of the sealing body 60 is the same as the lengthened distance, that is, the thickness of the sealing body 60 is the same as the dimension of the extension 83 along the height direction of the base 70, so that the sealing body 60 simultaneously closes each inner wall of the empty groove 81 to ensure the sealing effect. The thickness of the sealing body 60 can also be slightly less than the lengthened distance to ensure that there is enough glue to cover the base 70 and each lead pin. In practical applications, the thickness of the sealing body 60 is set to be more than 1 mm.

[0043] In addition, a vent hole 82 is provided on the side opposite to the opening of the housing 80. After the empty groove 81 is filled with glue, it is cured to form a sealing body 60, and then the vent hole 82 is sealed by hot-sealing. After hot-sealing, a layer of glue can be applied around the vent hole 82 for sealing. The hot-sealing process refers to sealing after hot-melting.

[0044] The utility model adopts a single-layer housing 80, and cooperates with the empty groove 81 and the sealing body 60 to achieve sealing, so as to minimize the volume of the relay and meet the miniaturization requirements of the client application; the production process is simple and the cost is low.

[0045] The relay assembly includes a magnetic circuit part 10, a moving spring part 20, a static spring part 30, an armature 40 and a push card 50. The magnetic circuit part 10 is fixed on the base 70, and the magnetic circuit part 10 is provided with a coil lead pin 14, and the coil lead pin 14 passes through the sealing body 60. The magnetic circuit part 10 generates magnetic force after being energized. The armature 40 is located on the magnetic circuit part 10 and can be moved under the action of magnetic force, that is, when the magnetic circuit part 10 generates magnetic force, the armature 40 is adsorbed, and when the magnetic force disappears, the armature 40 returns to its original position. The moving spring part 20 is inserted into the base 70 and is provided with a moving contact 21. The static spring part 30 is grooved in the base 70 and is provided with a static contact 31, and the static contact 31 is opposite to the moving contact 21. The push card 50 is connected between the armature 40 and the movable spring part 20. The push card 50 can drive the movable contact 21 to move and attract or separate from the static contact 31 under the action of the armature 40. That is, when the armature 40 is adsorbed, the push card 50 pushes the movable spring part 20 to attract the movable contact 21 and the static contact 31. When the armature 40 is released, the push card 50 pulls the movable spring part 20 to separate the movable contact 21 from the static contact 31.

[0046] Furthermore, the front of the base 70 is provided with a plurality of side plates 71, which extend along the length direction of the base 70 and are arranged on different sides in the width direction of the base 70 to form a mounting groove 73 with the base 70. The magnetic circuit portion 10 is partially located in the mounting groove 73, and openings are arranged at the top and side of the mounting groove 73. The magnetic circuit portion 10 can be loaded into the mounting groove 73 from top to bottom. The magnetic circuit portion 10 is provided with a coil group 11, an iron core 12 and a yoke 13. The coil group 11 is partially located outside the opening side of the mounting groove 73, the iron core 12 is penetrated through the coil group 11 and arranged along the height direction of the base 70, and the yoke 13 is located on one side of the coil group 11 and arranged along the height direction of the base 70. One end of the armature 40 is arranged in the mounting groove 73 and outside the yoke 13, and the other end is bent and opposite to one end of the iron core 12 in the axial direction, and the bent root of the armature 40 is pressed on the yoke 13. A compression spring 33 is also provided in the mounting groove 73, and the compression spring 33 is inserted into the mounting groove 73 and limits the armature 40. The end of the push card 50 is inserted into the mounting groove 73 to be connected with the corresponding end of the armature 40.

[0047] A partition plate 72 is also provided on the front side of the base 70, and a first partition portion 72a extending along the width direction of the base 70 is provided on one side of the partition plate 72, wherein a bending portion 74 extending along the width direction is correspondingly provided on the side of the side plate 71 opposite to the first partition portion 72a, and the bending portion 74 and the first partition portion 72a are spaced apart to form a first slot 75, and the first slot 75 extends along the height direction of the base 70, and a second slot 76 extending along the length direction is provided between the bottom of the bending portion 74 of the side plate 71 and the base 70, and the second slot 76 is connected to the first slot 75, and the first slot 75 and the second slot 76 have an opening on one side in the width direction of the base 70 for the dynamic spring part 20 to be inserted and limited; the base 70 is also provided with a first through hole 76a connected to the second slot 76, and the first through hole 76a also has an opening on one side in the width direction of the base 70.

[0048] The movable spring part 20 includes a movable spring piece 23, which is inserted into the first slot 75. A bent portion 74 is provided at one end of the movable spring piece 23 to be inserted into the second slot 76. A movable spring lead-out pin 22 is provided at the end of the bent portion 74, and the movable spring lead-out pin 22 passes through the first through hole 76a. A movable contact 21 is provided at the other end of the movable spring piece 23; and the sealing body 60 closes the gap between the movable spring lead-out pin 22 and the first through hole 76a. In order to better position the movable spring part 20, a convex bud can be provided on the movable spring piece 23 to cooperate with the inner wall of the first slot 75 to fix and clamp the movable spring piece 23.

[0049] The base 70 further includes a baffle 77, which is located outside the other side of the partition plate 72 and extends along the width direction of the base 70. The partition plate 72 is provided with a second partition portion 79 extending along the width direction of the base 70 on the side opposite to the baffle 77 to form a third slot 78 with the baffle 77. The third slot 78 has an opening on one side in the width direction of the base 70 for the static spring portion 30 to be inserted and limited. The base 70 is also provided with a second through hole 78a that is connected to the third slot 78, and the second through hole 78a also has an opening on one side in the width direction of the base 70.

[0050] The static spring part 30 includes a static spring piece 34, which is inserted into the third slot 78. A static spring lead-out pin 32 is provided at one end of the static spring piece 34, and the static spring lead-out pin 32 passes through the second through hole 78a. A static contact 31 is provided at the other end of the static spring piece 34. The sealing body 60 closes the gap between the static spring lead-out pin 32 and the second through hole 78a. In order to better fix the static spring part 30, a convex bud can be provided on the static spring piece 34 to cooperate with the inner wall of the third slot 78 to achieve fixed clamping of the static spring.

[0051] The push card 50 has a conical head 51 at one end for inserting into the hole at the corresponding position of the moving spring 23, and an opening 52 at the other end for inserting one end of the armature 40. In addition, the housing 80 may also be provided with a plurality of limiting bosses for limiting the positions of the components of the relay assembly when the relay assembly is inserted.

[0052] In the utility model, a single-layer shell 80 is used to cover the relay assembly and the base 70, and then glue is poured to cover the empty groove 81 to form a sealing body 60. The opening end face is extended at a distance from the back of the base 70 to ensure that there is enough glue to cover the base 70 and each lead pin, thereby ensuring the sealing performance and preventing liquid from penetrating from the root of the pin or the joint between the shell 80 and the base 70.

[0053] The above is only a specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any non-substantial changes to the utility model using this concept shall be deemed as an infringement of the protection scope of the utility model.

Claims

1. A liquid-cooled relay, comprising a relay assembly, a base and a housing, wherein the relay assembly is mounted on the base and is provided with a plurality of lead pins, the housing is sleeved outside the relay assembly and the base and is provided with an opening on a side opposite to the back of the base, characterized in that: The shell is a single-layer shell, and there is an extended distance between the end face where the opening of the shell is located and the back side of the base to form an empty groove, and the empty groove is filled with a sealing body, and the sealing body completely covers the back side of the base; several lead pins of the relay assembly pass through the sealing body, and the sealing body and the lead pins are sealed.

2. A liquid-cooled relay as claimed in claim 1, characterized in that: The opening of the shell is surrounded by an extension portion extending outward relative to the base, the extension portion and the base form the empty groove, and the sealing body seals and covers the inner wall of the extension portion.

3. A liquid-cooled relay according to claim 1, characterized in that: The thickness of the sealing body is the same as the lengthened distance.

4. A liquid-cooled relay as claimed in claim 1, characterized in that: A ventilation hole is arranged on one side of the shell body opposite to the opening, and the ventilation hole is sealed by hot sealing.

5. A liquid-cooled relay as claimed in claim 1, characterized in that: The relay assembly includes a magnetic circuit part, a moving spring part, a static spring part, an armature and a push card; the magnetic circuit part is fixed on the base to generate magnetic force when energized, and the magnetic circuit part is provided with a coil lead-out pin; the armature is located on the magnetic circuit part and can be moved under the action of magnetic force; the moving spring part is inserted into the base and is provided with a moving contact; the static spring part is grooved in the base and is provided with a static contact, and the static contact is opposite to the moving contact; the push card is connected between the armature and the moving spring part to drive the moving contact to move and to engage or separate with the static contact under the action of the armature.

6. A liquid-cooled relay as claimed in claim 5, characterized in that: A plurality of side panels are arranged on the front side of the base, and the plurality of side panels are arranged on different sides in the width direction of the base to form a mounting groove with the base. The magnetic circuit portion is partially located in the mounting groove and is provided with a coil group, an iron core and a yoke. The iron core passes through the coil group and is arranged along the height direction of the base, and the yoke is located on one side of the coil group and is arranged along the height direction of the base; one end of the armature is arranged in the mounting groove and outside the yoke, and the other end is bent and opposite to one end of the iron core in the axial direction; the push card end is inserted into the mounting groove to be connected to the corresponding end of the armature.

7. A liquid-cooled relay as claimed in claim 6, characterized in that: A partition plate is also provided on the front side of the base, and a first partition portion extending along the width direction of the base is provided on one side of the partition plate, wherein a bending portion extending along the width direction is correspondingly provided on the side of the side plate opposite to the first partition portion, and the bending portion and the first partition portion are spaced apart to form a first slot, and the first slot extends along the height direction of the base, and a second slot extending along the length direction is provided between the bottom of the side plate where the bending portion is located and the base, and the second slot is connected to the first slot, and the first slot and the second slot have an opening on one side in the width direction of the base for partially inserting and limiting the movable spring part; the base is also provided with a first through hole connected to the second slot.

8. A liquid-cooled relay as claimed in claim 7, characterized in that: The movable spring part includes a movable spring sheet, which is inserted into the first slot, and one end of the movable spring sheet is provided with a bending portion to be inserted into the second slot, and the end of the bending portion is provided with a movable spring lead-out pin to pass through the first through hole; the other end of the movable spring sheet is provided with the movable contact; and the sealing body closes the gap between the movable spring lead-out pin and the first through hole.

9. A liquid-cooled relay as claimed in claim 7, characterized in that: It also includes a baffle, which is located outside the other side of the partition plate and extends along the width direction of the base; the partition plate is provided with a second partition portion extending along the width direction of the base on the side opposite to the baffle to form a third slot with the baffle; the third slot has an opening on one side in the width direction of the base for the static spring part to be inserted and limited; the base is also provided with a second through hole connected to the third slot.

10. A liquid-cooled relay as claimed in claim 9, characterized in that: The static spring part includes a static spring sheet, which is inserted into the third slot, and one end of the static spring sheet is provided with a static spring lead-out pin to pass through the second through hole; the other end of the static spring sheet is provided with the static contact; and the sealing body closes the gap between the static spring lead-out pin and the second through hole.

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