Relay and manufacturing method therefor

Abstract

The present invention relates to the technical field of electronic control devices, and in particular to a relay and a manufacturing method therefor. The relay comprises a housing, a body assembly used for realizing the on / off of a load, and a silencing pad group, wherein a fixing area is provided between the housing and the body assembly, and the body assembly is fixed in the housing in the fixing area; the silencing pad group is located in the housing and is arranged in at least part of the area between the housing and the body assembly. By optimizing the structure of the relay, noise transmitted from the inside of the relay to the outside can be reduced, thereby improving user experience.

Description

Relay and manufacturing method thereof

[0001] This disclosure claims priority to Chinese patent application No. 202410238504.0 filed on March 1, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the technical field of electronic control devices, and in particular to a relay and a method for manufacturing the same. Background Art

[0003] As a special relay, high-voltage DC relay is mainly used in electric vehicles to control the charging and discharging of batteries.

[0004] In actual use, when the coil is energized, the moving iron core rapidly attracts the yoke plate or stationary iron core. The gap between the moving iron core and the yoke plate or stationary iron core is called the magnetic gap. The smaller the magnetic gap, the greater the attraction. Throughout the power-up process, the acceleration and velocity of the moving iron core continuously increase, resulting in a large final impulse, which can cause a relatively loud "closing noise."

[0005] Before the relay opens, both the contacts and the core are fully closed. The large spring is compressed beyond its travel to provide contact pressure, while the small spring is also compressed to provide contact breaking force. At this point, both springs are compressed, storing their potential energy. If the relay coil is de-energized, the stored energy in the springs is converted into kinetic energy for the entire drive rod assembly, causing the relay contacts to separate. This motion is not terminated until the drive rod assembly strikes the yoke plate (or other stop). Due to the high energy content, the impact force between the drive rod assembly and the yoke plate (or other stop) is significant, resulting in a loud "release noise" from the relay during this process.

[0006] However, general cars need to take into account the low-noise driving experience of passengers, requiring the switching sound of the relay to be small enough, with the noise below 60dB, to avoid giving users a bad experience of loud noise. Summary of the Invention

[0007] The embodiments of the present disclosure provide a relay and a manufacturing method thereof, which can reduce the transmission of noise generated by closing and releasing actions to the outside of the relay, thereby improving user experience.

[0008] An embodiment of the present disclosure provides a relay, comprising: a housing, a main body component for realizing load switching, and a sound-absorbing pad group; a fixing area is provided between the housing and the main body component, and the main body component is fixed in the housing in the fixing area; the sound-absorbing pad group is located in the housing and is placed in at least a portion of the area between the housing and the main body component.

[0009] According to some disclosed embodiments, the sound-absorbing pad group is provided in at least a portion of the fixing area.

[0010] According to some disclosed embodiments, an adhesive layer is provided in the fixing area.

[0011] According to some disclosed embodiments, the shell and the sound-absorbing pad group are an integrally formed structure, and the sound-absorbing pad group and the main body component are bonded by the adhesive layer.

[0012] According to some disclosed embodiments, the shell and the sound-absorbing pad group are split structures, and the main body component and the sound-absorbing pad group are bonded by the adhesive layer, and the shell and the sound-absorbing pad group are bonded by the adhesive layer.

[0013] According to some disclosed embodiments, the housing is provided with an exposure hole;

[0014] The main body component comprises a main body portion and a protruding portion; the protruding portion protrudes from the surface of the main body portion and is partially placed in the corresponding exposure hole.

[0015] According to some disclosed embodiments, the sound-absorbing pad group includes a first sound-absorbing pad, which is located between the side of the shell where the exposure hole is set and the main body; the first sound-absorbing pad includes a main body, which is provided with an opening, and the protrusion extends into the exposure hole through the corresponding opening.

[0016] According to some disclosed embodiments, the first sound-absorbing pad further includes a first extension portion for blocking glue, wherein the first extension portion is connected to the main body portion and extends between the side wall of the exposure hole and the protrusion.

[0017] According to some disclosed embodiments, the first sound-absorbing pad forms a first glue storage space on a side facing the main body, together with the side wall of the protruding portion and the main body, and the first glue storage space is used to fill the glue layer.

[0018] According to some disclosed embodiments, the first sound-absorbing pad is provided with a guiding slope around the protrusion; and the distance between the guiding slope and the protrusion gradually decreases along the direction from the protrusion to the exposure hole.

[0019] According to some disclosed embodiments, the first sound-absorbing pad also includes a second extension portion, which is located on the same side of the main body as the first extension portion, and is located on the side of the first extension portion facing away from the protrusion, and is spaced apart from the first extension portion, forming a second glue storage space between the second extension portion, the first extension portion and the inner wall of the outer shell.

[0020] According to some disclosed embodiments, the second extension portion abuts against an inner wall of the housing on one side facing the main body.

[0021] According to some disclosed embodiments, the first sound-absorbing pad further includes a third extension portion, which is located on a side of the main body facing away from the shell where the exposure hole is provided, and the third extension portion abuts against an outer wall of the main body.

[0022] According to some disclosed embodiments, the first sound-absorbing pad is provided with an avoidance portion.

[0023] According to some disclosed embodiments, the avoidance portion is an avoidance through-hole.

[0024] According to some disclosed embodiments, the avoidance portion is a avoidance groove, and the avoidance groove is recessed from the main body portion toward a side surface of the main body portion in a direction away from the main body portion.

[0025] According to some disclosed embodiments, a protruding structure is formed on the side of the main body away from the main body at a position corresponding to the avoidance groove, and a rib is provided on the protruding structure.

[0026] According to some disclosed embodiments, the first sound-absorbing pad includes a plurality of sub-gaskets, and the plurality of sub-gaskets are arranged at intervals.

[0027] According to some disclosed embodiments, the sound-absorbing pad set includes a second sound-absorbing pad located between the other side of the main body where the protruding portion extends and the outer shell.

[0028] According to some disclosed embodiments, a glue storage groove is provided on a side of the second sound-absorbing pad facing toward and / or away from the main body.

[0029] According to some disclosed embodiments, the sound-absorbing pad set includes a third sound-absorbing pad located between a side wall of the shell and a side wall of the main body assembly.

[0030] According to some disclosed embodiments, the main body assembly includes a sealing unit, which includes an insulating cover, a static contact, a moving contact piece and an elastic member, wherein the static contact forms the protrusion, wherein the moving contact piece is placed in the insulating cover and can move relative to the static contact to contact or separate from the static contact; the static contact is fixed relative to the insulating cover, and the side of the static contact facing away from the moving contact piece extends to the outside of the insulating cover and is exposed by the exposure hole; the elastic member is placed on the side of the moving contact piece facing away from the static contact to provide pressure for the contact between the moving contact piece and the static contact.

[0031] According to some disclosed embodiments, the sealing unit also includes a push rod module, which includes a bracket, a support seat and a support rod. The bracket includes a base plate, the base plate is located on one side of the moving contact piece, and the elastic member is placed between the base plate and the moving contact piece; the support rod is used to drive the contact and separation of the moving contact piece and the static contact, one axial end of the support rod is fixed to the support seat, and along the axial direction of the support rod, the bracket is fixed to the side of the support seat facing away from the support rod.

[0032] According to some disclosed embodiments, the main body assembly further includes an electromagnet unit, which is used to drive the support rod to perform reciprocating motion so that the movable contact piece follows the support rod.

[0033] The present disclosure also provides a method for manufacturing a relay, comprising: assembling a main body assembly and a sound-absorbing pad assembly in a housing, wherein the method for assembling the main body assembly and the sound-absorbing pad assembly in the housing comprises:

[0034] placing the sound-absorbing pad assembly in at least a portion of the area between the main body assembly and the shell;

[0035] A securing region between the housing and the body assembly secures the body assembly within the housing.

[0036] According to some disclosed embodiments, a method for fixing the main body assembly in the housing at a fixing area between the housing and the main body assembly includes:

[0037] Glue is dispensed in a fixing area between the main body component and the shell, and the main body component and the shell are bonded together by the cured glue layer.

[0038] According to some disclosed embodiments, the sound-absorbing pad group is provided in at least a portion of the fixing area.

[0039] According to some disclosed embodiments, a method of dispensing glue in a fixing area between the main body component and the housing and bonding the main body component and the housing through a cured glue layer includes:

[0040] Glue is dispensed between the main body component and the shell, and the main body component and the sound-absorbing pad group integrally formed with the shell are bonded together through the cured glue layer.

[0041] According to some disclosed embodiments, a method of dispensing glue in a fixing area between the main body component and the housing and bonding the main body component and the housing through a cured glue layer includes:

[0042] Dispensing glue between the main body component and the sound-absorbing pad group, and bonding the sound-absorbing pad group and the main body component through the cured glue layer;

[0043] Glue is dispensed between the shell and the sound-absorbing pad group, and the sound-absorbing pad group and the shell are bonded together by the cured glue layer.

[0044] According to some disclosed embodiments, the housing includes a first shell and a second shell; the sound-absorbing pad group includes a first sound-absorbing pad and a second sound-absorbing pad arranged opposite to each other; and the preparation method includes:

[0045] Dispensing glue between the main body assembly and the first shell, and fixing the first sound-absorbing pad between the first shell and the main body assembly through the cured glue layer;

[0046] Glue is dispensed between the main body component and the second shell, and the second sound-absorbing pad is fixed between the second shell and the main body component through the cured glue layer.

[0047] One embodiment disclosed above has at least the following advantages or beneficial effects:

[0048] 1. In the relay provided herein, the main assembly is fixed relative to the outer casing, which can reduce or even prevent the main assembly from shaking relative to the outer casing, thereby reducing the noise generated within the relay. Furthermore, the relay provided herein includes a sound-absorbing pad assembly between the main assembly and the outer casing. This pad assembly provides flexible damping to absorb vibrations, achieving a noise reduction effect. This reduces the transmission of noise generated by closing and releasing actions to the outside of the relay, thereby improving the user experience. Furthermore, due to its certain elasticity, the pad assembly also acts as a buffer, reducing vibrations within the relay's internal components and improving the relay's structural performance.

[0049] 2. In the relay provided herein, the housing and main assembly are bonded together via an adhesive layer within the adhesive fixing area. This enhances structural stability after the housing and main assembly are fixed, preventing the main assembly from shaking relative to the housing and reducing noise. Furthermore, when the sound-absorbing pad assembly is positioned within the adhesive fixing area, it is effectively placed in the solid propagation path of noise, thereby enhancing its cushioning, vibration absorption, and sound insulation properties.

[0050] 3. In the relay provided by the present invention, at least part of the first extension part is arranged between the exposed hole and the protrusion. This structural arrangement can mainly prevent the glue layer from overflowing, play a role in blocking glue, and even play a role in insulation and voltage resistance. Specifically, when both sides of the first sound-absorbing pad are bonded with glue layers, and the two glue layers are connected by the overflowed glue. After the two glue layers are connected, a solid propagation path for noise will be formed, and the noise will propagate outward through this path, affecting the noise reduction effect. Accordingly, by providing the first extension part, the glue layer can be prevented from overflowing, and the formation of a solid propagation path for noise after the two glue layers are connected can be avoided, thereby ensuring that the sound-absorbing pad group effectively plays a role in buffering, sound insulation and noise reduction. At the same time, after the glue is filled between the first extension part and the static contact, the creepage gap between the main contacts can also be increased, playing a role in insulation and voltage resistance.

[0051] 4. The relay provided by the present invention has a "glue storage" structure design for the main body component and the first silencer pad. The first glue storage space is conducive to the filling of glue, which can ensure that the first silencer pad and the main body are connected to form an insulating wall, thereby ensuring the creepage distance here. Specifically, when glue is dispensed on the surface of the main body and the first silencer pad is assembled with the main body component, the glue can be "squeezed" into the first glue storage space. When the glue in the first glue storage space is filled in place, the glue in the first glue storage space can form an insulating wall structure to avoid creepage problems. At the same time, the first glue storage space can also improve the firmness of the bonding between the first silencer pad and the main body component to improve the stability of related structural parts in the relay.

[0052] 5. In the relay provided herein, the first sound-absorbing pad is provided with a second glue storage space for filling with glue, thereby ensuring that the second sound-absorbing pad and the housing are connected to form an insulating wall, thereby ensuring creepage distance. Furthermore, after the first sound-absorbing pad is assembled with the housing and the glue cures, the housing and the first sound-absorbing pad are fixedly connected by the adhesive layer, which improves the stability of related structural components within the relay, ensures that the main assembly does not shake within the housing, and reduces noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] FIG1 is an exploded perspective view of a relay according to an embodiment of the present disclosure;

[0054] FIG2 is a schematic diagram showing the three-dimensional structure of the sealing unit in FIG1 ;

[0055] FIG3 shows a schematic cross-sectional view of the relay of FIG1 ;

[0056] FIG4 shows a cross-sectional schematic diagram of a relay in the related art;

[0057] FIG5 is a schematic cross-sectional view showing a portion of the structure in FIG3 ;

[0058] FIG6 shows another schematic cross-sectional view of a portion of the structure in FIG3 ;

[0059] FIG7 is a schematic diagram showing the three-dimensional structure of the first type of first sound-absorbing pad in FIG1 ;

[0060] FIG8 shows a bottom view of the first sound-absorbing pad in FIG7 ;

[0061] FIG9 shows a top view of the first sound-absorbing pad in FIG7 ;

[0062] FIG10 shows a schematic cross-sectional view of the section AA in FIG9 ;

[0063] FIG11 is a cross-sectional view showing the first sound-absorbing pad in FIG7 assembled on the surface of the main body assembly;

[0064] FIG12 is a schematic diagram showing the three-dimensional structure of another sealing unit in a relay provided by an embodiment of the present disclosure;

[0065] FIG13 is a schematic diagram showing the three-dimensional structure of a second first noise-absorbing pad in a relay provided by an embodiment of the present disclosure;

[0066] FIG14 shows a bottom view of the first sound-absorbing pad in FIG13;

[0067] FIG15 shows a top view of the first sound-absorbing pad in FIG13;

[0068] FIG16 shows a schematic cross-sectional view at BB in FIG15 ;

[0069] FIG17 is a schematic diagram showing the three-dimensional structure of a third first noise-absorbing pad in a relay provided by an embodiment of the present disclosure;

[0070] FIG18 shows a bottom view of the first sound-absorbing pad in FIG17;

[0071] FIG19 shows a top view of the first sound-absorbing pad in FIG17 ;

[0072] FIG20 shows a schematic cross-sectional view of CC in FIG19 ;

[0073] FIG21 is a cross-sectional view showing the first sound-absorbing pad and the housing in FIG1 as an integral unit;

[0074] FIG22 is a schematic cross-sectional view of the structure of FIG21 after assembly;

[0075] FIG23 shows a schematic diagram of a three-dimensional structure of a second noise-reducing pad in a relay provided by an embodiment of the present disclosure;

[0076] FIG24 shows a bottom view of the second sound-absorbing pad in FIG23;

[0077] FIG. 25 is a top view of the second sound-absorbing pad in FIG. 23 .

[0078] FIG26 shows a schematic cross-sectional view at DD in FIG25 ;

[0079] FIG27 shows a schematic structural diagram of a fourth first noise-absorbing pad in a relay provided by an embodiment of the present disclosure;

[0080] FIG28 shows a cross-sectional view at EE in FIG27 ;

[0081] FIG29 shows a top view of a second relay provided in an embodiment of the present disclosure;

[0082] FIG30 is a schematic structural diagram of the first noise-reducing pad corresponding to the relay in FIG29 .

[0083] The reference numerals are as follows: Related technology: 01, housing; 02, insulation cover; 03, static contact; 04, moving contact piece; 05, elastic member; 06, push rod module; 07, yoke iron plate; 08, coil; 09, static iron core; 010, moving iron core; 011, reset member; 012, U-shaped yoke; The present disclosure includes: 100, housing; 110, first housing; 111, exposure hole; 120, second housing; 200, main body assembly; 210, sealing unit; 211, insulating cover; 212, static contact; 213, moving contact piece; 214, elastic member; 215, push rod module; 2151, bracket; 2152, support seat; 2153, support rod; 216, yoke plate; 217, metal cover; 218, auxiliary contact; 220, electromagnet unit; 221, coil frame; 222, coil; 223, static iron core; 224, moving iron core; 225, reset member; 226, U-shaped yoke; 227 , magnetic tube; 230, arc extinguishing unit; 231, arc extinguishing magnet; 232, yoke iron clamp; 300, silencer pad group; 301, sub-gasket; 310, first silencer pad; 311, main body; 3111, opening; 312, first extension; 313, guide slope; 314, second extension; 315, third extension; 316, avoidance groove; 317, raised structure; 3171, rib; 320, second silencer pad; 321, glue storage groove; 322, depression; 400, glue layer; S, fixing area; S1, first area; S2, second area; S3, third area; P, second glue storage space. DETAILED DESCRIPTION

[0084] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example 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 this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0085] Figure 1 is an exploded perspective view of a relay according to an embodiment of the present disclosure; Figure 2 is a perspective view of the sealing unit 210 in Figure 1; and Figure 3 is a cross-sectional view of the relay in Figure 1. Referring to the structures shown in Figures 1 to 3, the relay includes a housing 100 and a main assembly 200 for switching a load.

[0086] Exemplarily, the main assembly 200 includes a sealing unit 210, an electromagnet unit 220, and an arc extinguishing unit 230. The sealing unit 210 is disposed within the housing 100, and the top of the static contact 212 of the sealing unit 210 is exposed to the outer surface of the housing 100 through the exposure hole 111 of the housing 100. The electromagnet unit 220 and the arc extinguishing unit 230 are both disposed within the housing 100. It will be understood that the relay in Figures 1 to 3 is shown as having two static contacts 212, but this is not limited to this.

[0087] It is worth noting that the static contact 212 forms a protruding portion of the main body assembly 200, and the portion other than the static contact 212 forms the main body of the main body assembly 200. The main body assembly 200 in the embodiment of the present disclosure can be understood as having a main body and a protruding portion, wherein the protruding portion protrudes from the surface of the main body and is partially disposed within the corresponding exposure hole 111.

[0088] As an example, referring again to the structure shown in FIG1 , the housing 100 includes a first shell 110 and a second shell 120 , which are engaged with each other to form a chamber for accommodating the sealing unit 210 , the electromagnet unit 220 , and the arc extinguishing unit 230 . It is worth noting that the structure of the first shell 110 and the second shell 120 is not limited to that shown in FIG1 . One of the first shell 110 and the second shell 120 may be a cover structure, and the other may be a cover plate. The specific configuration can be determined based on actual needs and will not be further described here.

[0089] As shown in Figures 1 to 3, the sealing unit 210 includes an insulating cover 211, a static contact 212, a movable contact piece 213 and an elastic member 214, wherein the movable contact piece 213 is placed in the insulating cover 211, and its two ends can move relative to the static contact 212 to contact or separate the static contact 212; the static contact 212 is fixed relative to the insulating cover 211, and the side of the static contact 212 facing away from the movable contact piece 213 extends to the outside of the insulating cover 211 and is exposed by the exposure hole 111; the elastic member 214 is placed on the side of the movable contact piece 213 facing away from the static contact 212 to provide pressure for the contact between the movable contact piece 213 and the static contact 212.

[0090] Exemplarily, the insulating cover 211 is a ceramic cover. In addition, it is worth noting that the two ends of the movable contact piece 213 can contact or separate from the two static contacts 212, and the two ends of the movable contact piece 213 and the two static contacts 212 form the main contacts of the relay.

[0091] The arc extinguishing unit 230 is used to extinguish the arc generated between the static contact 212 and the movable contact piece 213 of the sealing unit 210 .

[0092] As an example, the arc-extinguishing unit 230 includes two arc-extinguishing magnets 231. The arc-extinguishing magnets 231 can be permanent magnets and each arc-extinguishing magnet 231 can be substantially rectangular. The two arc-extinguishing magnets 231 are respectively disposed on either side of the insulating cover 211 and are arranged opposite each other along the length of the movable contact piece 213.

[0093] It should be noted that by providing two arc-extinguishing magnets 231 disposed opposite each other, a magnetic field can be formed around the static contact 212 and the movable contact piece 213. Therefore, under the action of the magnetic field, the arc generated between the two static contacts 212 and the movable contact piece 213 will be stretched away from each other until it is disconnected, thereby extinguishing the arc.

[0094] The arc extinguishing unit 230 also includes two yoke clamps 232, which are arranged corresponding to the positions of the two arc extinguishing magnets 231. In addition, the two yoke clamps 232 surround the sealing unit 210 and the two arc extinguishing magnets 231. The design of the yoke clamps 232 surrounding the arc extinguishing magnets 231 can prevent the magnetic field generated by the arc extinguishing magnets 231 from spreading outward and affecting the arc extinguishing effect. The yoke clamps 232 are made of soft magnetic material. Soft magnetic materials can include but are not limited to iron, cobalt, nickel, and alloys thereof.

[0095] Continuing to refer to the structure shown in Figures 1 and 3, the sealing unit 210 also includes a push rod module 215, which includes a bracket 2151, a support seat 2152 and a support rod 2153. The bracket 2151 includes a base plate, which is located on one side of the moving contact piece 213, and the elastic member 214 is placed between the base plate and the moving contact piece 213; the support rod 2153 is used to drive the contact and separation of the moving contact piece 213 and the static contact 212, and one axial end of the support rod 2153 is fixed to the support seat 2152, and along the axial direction of the support rod 2153, the bracket 2151 is fixed to the side of the support seat 2152 facing away from the support rod 2153.

[0096] It is noteworthy that, along the axial direction of the support rod 2153, the elastic member 214 and the movable contact piece 213 are mounted on the side of the support base 2152 facing away from the support rod 2153, and the elastic member 214 and the movable contact piece 213 are mounted on the bracket 2151. As an example, the bracket 2151 includes a bottom plate, a top plate, and two oppositely disposed side plates. Along the axial direction of the support rod 2153, the two side plates are located on the same side of the bottom plate; the top plate is connected to the other ends of the two side plates facing away from the bottom plate, forming a frame-shaped structure with the bottom plate and the two side plates; the elastic member 214 is located within the frame-shaped structure. Of course, the structure of the bracket 2151 is not limited to this and can be configured as needed, and the details will not be repeated here.

[0097] Continuing to refer to the structures shown in FIG. 1 and FIG. 3 , the main assembly 200 further includes an electromagnet unit 220 . The electromagnet unit 220 is configured to drive the support rod 2153 to perform reciprocating motion, and the movable contact piece 213 follows the support rod 2153 .

[0098] It is understandable that the support rod 2153 reciprocates under the driving action of the electromagnet unit 220 , and the movable contact piece 213 moves along with the support rod 2153 , thereby achieving contact and separation between the movable contact piece 213 and the static contact 212 .

[0099] The sealing unit 210 also includes a yoke plate 216 and a metal cover 217. The insulating cover 211 is provided on one side of the yoke plate 216 to form a contact chamber. The contact chamber is used to accommodate the movable contact piece 213. The yoke plate 216 has a through hole connected to the contact chamber, and the push rod module 215 is movably inserted into the through hole; the metal cover 217 is connected to the side of the yoke plate 216 facing away from the insulating cover 211, and the metal cover 217 covers the through hole on the yoke plate 216. The metal cover 217 and the yoke plate 216 enclose a chamber for accommodating the static iron core 223 and the moving iron core 224 of the electromagnet unit 220, which will be described in detail below.

[0100] As an example, the electromagnet unit 220 includes a coil frame 221, a coil 222, a static iron core 223, a moving iron core 224 and a reset member 225. The coil frame 221 is hollow and cylindrical and is formed of an insulating material. The metal cover 217 is passed through the coil frame 221. The coil 222 surrounds the coil frame 221. The static iron core 223 is fixedly set in the metal cover 217, and part of the static iron core 223 extends into the through hole. The static iron core 223 has a through hole, and the through hole is arranged corresponding to the position of the through hole for the support rod 2153 to pass through. The moving iron core 224 is movably set in the metal cover 217 and is arranged opposite to the static iron core 223. The moving iron core 224 is connected to the support rod 2153 and is used to be attracted by the static iron core 223 when the coil 222 is energized. The moving iron core 224 and the support rod 2153 can be connected by screwing, riveting, welding or other methods.

[0101] The reset member 225 is located inside the metal cover 217 and is set between the static iron core 223 and the movable iron core 224. It is used to reset the movable iron core 224 when the coil 222 is powered off. The reset member 225 can be a spring and is sleeved on the outside of the support rod 2153.

[0102] A magnetic tube 227 is sleeved on the outside of the metal cover 217 , and a U-shaped yoke 226 is sleeved on the outside of the magnetic tube 227 . The coil frame 221 is placed between the magnetic tube 227 and the U-shaped yoke 226 to enhance the magnetic conductivity and improve the performance of the electromagnet unit 220 .

[0103] Taking a relay from related art as an example, as shown in Figure 4, in actual use, when coil 08 is energized, the moving iron core 010 rapidly attracts the yoke plate 07 or the stationary iron core 09. The smaller the magnetic gap between the moving iron core 010 and the yoke plate 07 or the stationary iron core 09, the greater the attraction. Throughout the power-up process, the acceleration and velocity of the moving iron core 010 continuously increase. "Closing noise" primarily occurs at position A in Figure 4, between the iron core 09 and the moving iron core 010.

[0104] Continuing to refer to Figure 4, before the relay is disconnected, the main contacts and the iron core are in a completely closed state, the elastic member 05 is compressed, and the reset member 011 is also compressed, storing potential energy. When the driving end of the coil 08 inside the relay receives a power-off command, the potential energy stored in the elastic member 05 and the reset member 011 will be converted into the kinetic energy of the entire push rod module 06, thereby realizing the separation of the contacts of the relay, until the push rod module 06 hits the yoke iron plate 07 (or other stop members), and the entire movement is terminated. The "release noise" mainly occurs at position B in Figure 4. Due to the large energy, the "release noise" caused by the collision of the push rod module 06 and the yoke iron plate 07 (or other stop members) is relatively large.

[0105] Figure 4 also shows the possible propagation paths of the noise within the relay. The propagation path of the noise generated when hitting the yoke plate 07 within the contact chamber may be as shown in path a in Figure 4, where the noise is transmitted to the insulating cover 02 (without a rubber pad) through the internal gas, and then to the housing 01. Alternatively, the noise within the relay may be as shown in path b in Figure 4, where the noise may be transmitted through the solid state along the yoke plate 07 and the insulating cover 02 to the housing 01. Alternatively, the noise within the relay may be as shown in paths c and d in Figure 4, where the noise may be transmitted through the solid state along the yoke plate 07 and the U-shaped yoke 012 to the housing 01. It is worth noting that the noise in paths c and d is transmitted to the outside of the housing 01 from different positions.

[0106] It will be understood that the above examples are intended to introduce locations where noise may occur in the relay.

[0107] Continuing to refer to the structures shown in Figures 1 to 3 and Figures 5 and 6, the relay provided in the embodiment of the present disclosure includes a fixing area S provided between the housing 100 and the main body component 200, and the main body component 200 is fixed in the housing 100 in the fixing area S; the sound-absorbing pad group 300 is located in the housing 100 and is placed in at least a portion of the area between the housing 100 and the main body component 200.

[0108] It should be noted that in the relay provided by the embodiment of the present disclosure, the main body assembly 200 is fixed relative to the housing 100, which can reduce or even prevent the main body assembly 200 from shaking relative to the housing 100, thereby reducing the noise generated within the relay. At the same time, the relay provided by the embodiment of the present disclosure is provided with a sound-absorbing pad group 300 between the main body assembly 200 and the housing 100. The sound-absorbing pad group 300 can perform flexible damping to absorb vibration, thereby achieving a noise reduction effect, thereby reducing the noise generated by the closing and releasing actions from being transmitted to the outside of the relay, thereby improving the user experience. In addition, since the sound-absorbing pad group 300 has a certain degree of elasticity, the sound-absorbing pad group 300 can also play a buffering role to reduce the shock of the internal structural parts of the relay and improve the structural performance of the relay.

[0109] It is worth noting that in the embodiment of the present disclosure, the sound-absorbing pad group 300 is located in part or all of the area between the housing 100 and the main assembly 200, and can be specifically arranged according to needs. Preferably, the sound-absorbing pad group 300 is located on the above-mentioned noise propagation path to better exert the noise reduction effect.

[0110] In one embodiment, at least a portion of the fixing area S is provided with a sound-absorbing pad assembly 300 .

[0111] It should be noted that this embodiment places the sound-absorbing pad assembly 300 within the fixed area S, which effectively utilizes the space within the relay and improves its space efficiency. Furthermore, this arrangement facilitates the sound-absorbing pad assembly 300 to cushion and reduce noise from the fixed structure within the fixed area S, thereby improving the structural performance of the relay.

[0112] It is understood that the sound-absorbing pad assembly 300 within the fixed area S is in a fixed state. Of course, the sound-absorbing pad assembly 300 can also be located outside the fixed area S, in which case the sound-absorbing pad assembly 300 can be in a free state or a fixed state. When specifically arranging the sound-absorbing pad assembly 300, it is preferably fixed to prevent the sound-absorbing pad assembly 300 from shaking within the relay, allowing the sound-absorbing pad assembly 300 to better perform its noise reduction or buffering functions.

[0113] When securing the housing 100 and the main assembly 200, the housing 100 and the main assembly 200 are preferably secured together by an adhesive layer 400 (i.e., the adhesive layer 400 is provided in the securing area S). In this case, the securing area S can be understood as an adhesive securing area. The adhesive process is simple and easy to operate, and the adhesive has strong adhesive force, enabling reliable and stable bonding of the parts and components it contacts.

[0114] Of course, other fixing forms can also be used between the shell 100 and the main body component 200. For example, the shell 100 and the main body component 200 can be fixedly connected in the fixing area S by interference fit.

[0115] It is understood that the adhesive layer 400 can be formed by glue or double-sided tape. When glue is used to form the adhesive layer 400, the adhesive layer 400 can be formed by dispensing or pouring glue. For example, glue can be dispensed between the housing 100 and the main assembly 200. After the glue is cured, the adhesive layer 400 shown in Figure 5 is formed. The adhesive layer 400 can bond and fix the housing 100 and the main assembly 200.

[0116] It is worth noting that the sealing unit 210 in the main assembly 200 provided in the embodiment of the present disclosure effectively seals the internal structural components through its own structure. Therefore, when glue is applied between the housing 100 and the main assembly 200, the adhesive layer 400 formed after the glue application primarily secures the housing 100 and the main assembly 200. Of course, this adhesive layer 400 also provides a certain sealing effect, which will not be further described.

[0117] As an example, the fixing area S is shown in FIG6 , where the housing 100 and the main assembly 200 are connected via an adhesive layer 400 disposed within the fixing area S. A sound-absorbing pad assembly 300 is disposed within at least a portion of the fixing area S. It should be understood that the fixing area S refers to the area between the housing 100 and the main assembly 200 that can be glued and fixed, and is not limited to the area shown in FIG6 .

[0118] It should be noted that in this embodiment, the shell 100 and the main component 200 are bonded by the adhesive layer 400 in the fixing area S, which can improve the stability of the structure after the shell 100 and the main component 200 are fixed, thereby preventing the main component 200 from shaking relative to the shell 100 and reducing noise.

[0119] When glue is applied between the housing 100 and the main assembly 200, the resulting cured adhesive layer 400 may create a noise transmission path between the housing 100 and the main assembly 200. When the sound-absorbing pad assembly 300 is placed in the adhesive fixing area, it is effectively placed in the solid propagation path of the noise, thereby better facilitating its cushioning, vibration absorption, and sound insulation and reduction functions.

[0120] When setting the fixing area S between the housing 100 and the main assembly 200 , there are various possible distributions of the fixing area S.

[0121] In the structure shown in Figure 6, in one example, the fixing area S includes a first area S1, a second area S2, and a third area S3. The first area S1 is located between the side of the housing 100 where the exposure hole 111 is provided and the main assembly 200; the second area S2 is located on the other side of the main assembly 200 facing away from the first area S1; and the third area S3 is located between the first area S1 and the second area S2. Of course, the scope of the fixing area S between the housing 100 and the main assembly 200 is not limited to that shown in Figure 6; this is merely an example. Alternatively, only one or two of the first area S1, the second area S2, and the third area S3 may be provided.

[0122] In order to facilitate understanding of the relay provided in the embodiment of the present disclosure, the side where the relay leads out the static contact 212 can be defined as the top. In this case, the first area S1 can be understood as being located at the top of the main body component 200; the second area S2 arranged opposite to the first area S1 can be understood as being located at the bottom of the main body component 200; and the third area S3 can be understood as being located on the side of the main body component 200.

[0123] In one embodiment, as shown in Figures 21 and 22, the housing 100 and the muffler assembly 300 are integrally formed to reduce the number of components within the relay, minimize glue dispensing steps, and ease assembly difficulty. Specifically, the housing 100 and the muffler assembly 300 can be integrally formed using an injection molding process.

[0124] At this point, the sound-absorbing pad assembly 300 is bonded to the main assembly 200 via the adhesive layer 400, effectively fixing the relative positions of the housing 100 and the main assembly 200. It should be understood that when assembling the relay formed by this structure, only the main assembly 200 and the housing 100 need to be glued, which can reduce the number of glue steps and ease the assembly difficulty.

[0125] In another embodiment, the shell 100 and the sound-absorbing pad assembly 300 are split structures, and the main body assembly 200 and the sound-absorbing pad assembly 300 are bonded by the adhesive layer 400 , and the shell 100 and the sound-absorbing pad assembly 300 are bonded by the adhesive layer 400 .

[0126] It should be noted that in the above two embodiments, when the noise-absorbing pad assembly 300 is fixed to both the housing 100 and the main assembly 200, not only is the noise-absorbing pad assembly 300's noise reduction capability enhanced, but the relay's withstand voltage insulation capability is also enhanced. Specifically, because the noise-absorbing pad assembly 300 is positioned between the housing 100 and the main assembly 200, and the noise-absorbing pad assembly 300 is effectively fixed to the housing 100 and the main assembly 200 (by gluing or integrally forming), a gap is unlikely to form between the main assembly 200 and the housing 100, thereby preventing electricity from "creeping" through the gap and affecting the withstand voltage insulation between the main contacts.

[0127] In addition, since the sound-absorbing pad group 300 can be placed in the entire fixing area S or part of the fixing area S, if the sound-absorbing pad group 300 is only fixed on one side or has no fixing relationship with the shell 100 and the main body component 200, it is considered that the main body component 200 and the shell 100 do not form a fixing area S in this area.

[0128] Of course, when the sound-absorbing pad assembly 300 is connected to both the housing 100 and the main assembly 200 via the adhesive layer 400, the adhesive layer 400 formed between the main assembly 200 or the housing 100 and the sound-absorbing pad assembly 300 is the adhesive layer 400 used to connect the housing 100 and the main assembly 200. Similarly, when the sound-absorbing pad assembly 300 and the housing 100 are integrally formed, if the sound-absorbing pad assembly 300 and the main assembly 200 are connected via the adhesive layer 400, the adhesive layer 400 is the adhesive layer 400 used to connect the housing 100 and the main assembly 200.

[0129] When the sound-absorbing pad group 300 is provided, there are many possible structures of the sound-absorbing pad group 300 . For example, the sound-absorbing pad group 300 may be one of the following structures.

[0130] In one embodiment, as shown in Figures 7 to 10 , the sound-absorbing pad assembly 300 includes a first sound-absorbing pad 310 located between the side of the housing 100 where the exposure hole 111 is located and the main body. The first sound-absorbing pad 310 includes a main body 311 having an opening 3111 defined therein. A protrusion is positioned within the corresponding opening 3111 and extends through the opening 3111 into the exposure hole 111. It is understood that, in conjunction with the division of the fixing area S, the first sound-absorbing pad 310 can be understood as being located in the first area S1, i.e., the first sound-absorbing pad 310 serves as a sound-absorbing structure in the top area of ​​the main assembly 200 and the housing 100.

[0131] It should be noted that, considering the noise propagation path, the first noise-absorbing pad 310 is located in the two main noise propagation paths. The first noise-absorbing pad 310 can effectively absorb the noise inside the relay to reduce the noise transmitted from the inside of the relay to the outside.

[0132] When the first sound-absorbing pad 310 is set, the first sound-absorbing pad 310 is bonded to the main body component 200, and the first sound-absorbing pad 310 is bonded to the shell 100 to improve the stability of the first sound-absorbing pad 310 inside the relay, and to improve the stability between the shell 100, the main body component 200 and the first sound-absorbing pad 310 to reduce noise.

[0133] In one embodiment, as shown in the structure of Figures 7 to 10, the first sound-absorbing pad 310 also includes a first extension portion 312 for blocking glue. The first extension portion 312 is connected to the main body portion 311 (exemplarily the insulating cover 211) and extends between the side wall of the exposure hole 111 and the protrusion (such as the static contact 212).

[0134] It should be noted that when bonding the first sound-absorbing pad 310 to the main assembly 200, glue is applied to the surface of the insulating cover 211. Afterwards, the first sound-absorbing pad 310 is assembled. At this point, the uncured adhesive layer 400 may extend along the gap between the static contact 212 and the opening 3111, away from the insulating cover 211. In this embodiment, at least a portion of the first extension 312 is disposed between the exposed hole 111 and the protrusion. This structural arrangement primarily prevents the adhesive layer 400 from overflowing, serves as a glue barrier, and even provides insulation and voltage resistance.

[0135] Specifically, when both sides of the first sound-absorbing pad 310 are bonded with adhesive layers 400, and the two adhesive layers 400 are connected by overflowing glue, a solid noise transmission path is formed after the two adhesive layers 400 are connected. The noise can then propagate outward through this path, affecting the noise reduction effect. Accordingly, the provision of the first extension portion 312 prevents overflow of the adhesive layers 400, thus preventing the formation of a solid noise transmission path after the two adhesive layers 400 are connected, thereby ensuring that the sound-absorbing pad assembly 300 effectively performs its buffering, soundproofing and noise reduction functions.

[0136] In addition, when the distance between the first extension portion 312 and the static contact 212 is larger, after filling with glue, the creepage gap between the main contacts can also be increased, thereby achieving insulation withstand voltage.

[0137] In one embodiment, the first sound-absorbing pad 310 forms a first glue storage space on a side facing the main body, together with the sidewall of the protruding portion and the main body. The first glue storage space is used to fill the glue layer 400 .

[0138] It should be noted that in this embodiment, a "glue storage" structure is designed for the main assembly 200 and the first sound-absorbing pad 310. The first glue storage space is used to fill with glue, which can ensure that the first sound-absorbing pad 310 and the main body are connected to form an insulating wall, thereby ensuring the creepage distance here. Specifically, when glue is dispensed on the surface of the insulating cover 211 (i.e., the main body) and the first sound-absorbing pad 310 is assembled with the main assembly 200, the glue can be "squeezed" into the first glue storage space (as shown by the black filling in Figure 11). When the glue in the first glue storage space is filled in place, the glue in the first glue storage space can form an insulating wall structure to avoid creepage problems.

[0139] At the same time, the first adhesive storage space can also improve the bonding strength between the first sound-absorbing pad 310 and the main assembly 200, thereby improving the stability of related structural components in the relay.

[0140] In a specific embodiment, as shown in Figure 10, the first sound-absorbing pad 310 is provided with a guide slope 313 around the protrusion. It is understood that the guide slope 313 can be formed by the main body 311 alone, or the guide slope 313 can be formed by the main body 311 and the first extension 312.

[0141] It should be noted that the guide slope 313 provided on the first sound-absorbing pad 310 is used to cooperate with the main assembly 200 to form the first adhesive storage space mentioned above. As the static contact 212 approaches the exposure hole 111, the distance between the guide slope 313 and the static contact 212 gradually decreases, so that the first adhesive storage space is larger on the side closer to the insulation cover 211 and smaller on the side farther away from the insulation cover 211. This reserves more adhesive storage space and facilitates the filling of the adhesive layer 400 into the first adhesive storage space.

[0142] In addition, the guide slope 313 can also play a guiding role during assembly, so as to facilitate the assembly of the first noise-absorbing pad 310 and the static contact 212.

[0143] Of course, the inner surface of the first noise-absorbing pad 310 is not limited to being set as the guide slope 313 shown in FIG10 , and can also be set as other surfaces according to needs, which will not be described in detail.

[0144] In one embodiment, as shown in Figures 7 to 10, the first sound-absorbing pad 310 further includes a second extension portion 314. The second extension portion 314 and the first extension portion 312 are located on the same side of the main body portion 311. The second extension portion 314 is located on the side of the first extension portion 312 facing away from the protrusion and is spaced apart from the first extension portion 312. A second adhesive storage space P is formed between the second extension portion 314, the first extension portion 312, and the inner wall of the housing 100. Exemplarily, the second adhesive storage space P is shown in the form of an adhesive storage ring.

[0145] As shown in Figures 7 and 10 , this embodiment provides a second glue storage space P on the side of the first noise-absorbing pad 310 facing the top wall of the housing 100. This second glue storage space P is used to fill with glue, ensuring that the first noise-absorbing pad 310 and the housing 100 are connected to form an insulating wall, thereby ensuring creepage distance. Furthermore, after the first noise-absorbing pad 310 is assembled with the housing 100 and the glue cures, the housing 100 and the first noise-absorbing pad 310 are fixedly connected by the adhesive layer 400, which improves the stability of the relevant structural components within the relay, ensures that the main assembly 200 does not shake within the housing 100, and reduces noise.

[0146] Alternatively, as shown in Figures 21 and 22, the second adhesive space P is filled with the plastic of the first housing 110, which is integrally injection-molded with the sound-absorbing pad 300. Filling the second adhesive space P with the plastic of the first housing 110 ensures that the first sound-absorbing pad 310 and the first housing 110 are connected to form an insulating wall, thereby ensuring a sufficient creepage distance.

[0147] 11 , the second extension portion 314 abuts against the inner wall of the housing 100 facing the main body. Specifically, the second extension portion 314 abuts against the top wall of the housing 100 to prevent glue from overflowing from the second glue storage space P.

[0148] In one embodiment, as shown in Figures 7 to 10 , the first sound-absorbing pad 310 further includes a third extension 315. This extension 315 is located on the side of the main body 311 facing away from the exposure hole 111 of the housing 100, and abuts the outer wall of the main body. This third extension 315 positions and blocks some glue from flowing downward. Furthermore, if glue flows onto the surface of the insulating cover 211 and solidifies, it does not affect performance. Therefore, the third extension 315 can be positioned as needed.

[0149] It is understood that the main body 311 , the first extension portion 312 , the second extension portion 314 and the third extension portion 315 of the first sound-absorbing pad 310 shown in FIG. 10 are schematically separated by dotted lines, but the present invention is not limited thereto.

[0150] If other structures protrude from the top of the insulating cover 211, as shown in Figure 12, a relief portion (not shown in Figures 7 to 10) must be provided on the first muffler pad 310 to provide relief. For example, the structure protruding from the top of the insulating cover 211 is the auxiliary contact 218. Of course, the structure protruding from the top of the insulating cover 211 is not limited to the auxiliary contact 218 and can also be other structures, such as an exhaust pipe or a welding terminal.

[0151] As an example, when two static contacts 212 are provided in the relay, the avoidance portion is provided in the main body 311 and is located between the two openings 3111 to make way for structures such as the auxiliary contact 218 as shown in FIG. 12 .

[0152] When the avoidance portion is specifically provided, the avoidance portion can have various structural forms. For example, the avoidance portion can be a avoidance through-hole or a avoidance groove 316 as shown in FIG8 . In one specific embodiment, when the avoidance portion is a avoidance through-hole, the avoidance through-hole can penetrate the main body 311 along the thickness direction of the main body 311. In another specific embodiment, the avoidance portion can be a avoidance groove 316, the opening of which faces the insulating cover 211. It should be understood that due to the limited thickness of the main body 311 of the first sound-absorbing pad 310, a raised structure 317 can be provided on the other side of the avoidance groove 316. The surface of the raised structure 317 can be provided with ribs 3171 as shown in FIG7 and FIG9 , or it can be absent as shown in FIG13 to FIG16 . The structure of the ribs 3171 can be configured as required. For example, it can be a corrugated shape as shown in FIG7 or FIG9 , or it can also be a dispersed dot shape.

[0153] When the first silencer pad 310 is bonded to the housing 100 through the adhesive layer 400, the surface of the raised structure 317 may or may not be glued. When glued, the bonding force can be increased and the creepage insulation capability can be enhanced. When glued, the raised structure 317 can be interference fit with the housing 100 and the relay part. This interference fit is conducive to enhancing the creepage insulation capability between the static contacts 212. In addition, when the surface of the raised structure 317 is provided with corrugated ribs 3171, the ribs 3171 are more easily deformed at the corrugations to absorb the interference, which is more conducive to assembly.

[0154] When the housing 100 and the first sound-absorbing pad 310 are integrally formed, the rib 3171 increases the injection molding contact area and improves the bonding strength between the integrally formed sound-absorbing pad and the housing 100 .

[0155] It is worth noting that a rib 3171 may also be provided on the side of the first muffler pad 310 facing the insulating cover 211. Specifically, the first muffler pad 310 may have an interference fit rib 3171 provided between the two static contacts 212 on the side facing the insulating cover 211 to cooperate with the top surface of the insulating cover 211 and enhance the creepage insulation capability between the static contacts 212.

[0156] In addition, when the avoidance portion is an avoidance groove 316 , as shown in FIG. 17 to FIG. 20 , a small through hole may be formed at the bottom of the avoidance groove 316 to better avoid structures such as the auxiliary contact 218 .

[0157] Since the size of the small through hole is small, the protruding structure 317 corresponding to the avoidance groove 316 can still be set to the above-mentioned glue dispensing or non-glue dispensing to play the corresponding role.

[0158] When the first sound-absorbing pad 310 is used, one or more of the first extension portion 312 , the guide slope 313 , the second extension portion 314 , the third extension portion 315 and the avoidance portion can be provided on the main body 311 of the first sound-absorbing pad 310 as required, and the details are not repeated here.

[0159] Of course, when the first sound-absorbing pad 310 and the housing 100 are integrally provided, the structure of the first sound-absorbing pad 310 may also be changed relative to the structure in FIG. 21 and FIG. 22 , and details thereof will not be repeated.

[0160] In one embodiment, referring to the structures shown in Figures 23 to 26 in conjunction with Figure 1 , the sound-absorbing pad assembly 300 further includes a second sound-absorbing pad 320 located between the housing 100 and the opposite side of the main body lead-out protrusion. The second sound-absorbing pad 320 in Figure 23 may differ from the second sound-absorbing pad 320 in Figure 1 and serves as two examples. It is understood that, in conjunction with the division of the fixing area S, the second sound-absorbing pad 320 can be understood as being located in the second area S2. In other words, the second sound-absorbing pad 320 serves as a sound-absorbing structure in the bottom area between the main body assembly 200 and the housing 100, thereby reducing noise transmitted from the interior of the relay to the outside.

[0161] It should be noted that the second sound-absorbing pad 320 can be bonded to the shell 100 and the main body component 200, or the second sound-absorbing pad 320 can be integrally provided with the shell 100 and bonded to the main body component 200, and the details are not repeated here.

[0162] For example, the second sound-absorbing pad 320 can be provided between the U-shaped yoke 226 and the housing 100. The assembly steps include but are not limited to: dispensing glue on the housing 100, dispensing glue on the second sound-absorbing pad 320, and assembling the main assembly 200 to reduce shaking of the main assembly 200 in the housing 100 and further reduce noise.

[0163] In one embodiment, with continued reference to the structures shown in FIG. 23 to FIG. 26 , a glue storage groove 321 is provided on one side of the second sound-absorbing pad 320 facing and / or facing away from the main body portion to increase the bonding force after assembly and enhance the creepage insulation capability.

[0164] It is worth noting that, as shown in Figures 23 to 25, the second muffler pad 320 can be provided with a recess 322 to match the internal structure of the relay and facilitate alignment between adjacent structures. Of course, the structure that plays the role of alignment does not necessarily need to be a recess 322, but can also be a protrusion, which will not be detailed here.

[0165] In one embodiment, the sound-absorbing pad assembly 300 includes a third sound-absorbing pad (not shown) located between the sidewalls of the housing 100 and the sidewalls of the main assembly 200. It is understood that, in conjunction with the division of the fixing area S, the third sound-absorbing pad can be understood as being located in the third area S3. That is, the third sound-absorbing pad serves as a sound-absorbing structure between the main assembly 200 and the side of the housing 100 to reduce noise transmitted from the interior of the relay to the outside.

[0166] The third sound-absorbing pad can be bonded to the housing 100 and the main assembly 200, or the third sound-absorbing pad can be integrally provided with the housing 100 and bonded to the main assembly 200. The details are not further described. Similarly, the surface of the third sound-absorbing pad can be designed with a glue storage groove 321 similar to the surface of the second sound-absorbing pad 320 as needed. The details are not further described.

[0167] It will be appreciated that the examples of the first, second, and third sound-absorbing pads described above are all described using the example of the sound-absorbing pad assembly 300 being entirely positioned in the fixed area S. Of course, when the sound-absorbing pad assembly 300 is only partially positioned in the fixed area S, or is not positioned within the fixed area S, taking the first sound-absorbing pad 310 as an example, the first sound-absorbing pad 310 may be fixed only to the housing 100 or the main assembly 200. This fixed relationship may be achieved through the adhesive layer 400 or through an integral fabrication process. Alternatively, the first sound-absorbing pad 310 may have no fixed relationship with either the housing 100 or the main assembly 200, and may be positioned only between the housing 100 and the main assembly 200.

[0168] It is worth noting that there are many possibilities for the location of the glue layer between the shell 100 and the main body component 200 in the embodiment of the present disclosure, and the above-mentioned first sound-absorbing pad 310, second sound-absorbing pad 320 or third sound-absorbing pad can be set separately or in combination. For example, several specific application examples are provided. Example 1: Set the first sound-absorbing pad 310, and glue the shell 100 and the main body component 200 at the bottom; Example 2: Integrate the first sound-absorbing pad 310 with the shell 100, and glue the shell 100 and the main body component 200 at the bottom; Example 3: Set the second sound-absorbing pad 320, and glue the shell 100 and the main body component 200 at the top; Example 4: Set the first sound-absorbing pad 310 and the second sound-absorbing pad 320; Example 5: Set the third sound-absorbing pad.

[0169] It is worth noting that in the fourth example above, the first sound-absorbing pad 310 can be fixed within the relay without the adhesive layer 400, or the first sound-absorbing pad 310 can be bonded to the surface of the housing 100 or the main assembly 200 via the adhesive layer 400. Similarly, in the fourth example above, the second sound-absorbing pad 320 can be fixed within the relay without the adhesive layer 400, or the second sound-absorbing pad 320 can be bonded to the surface of the housing 100 or the main assembly 200 via the adhesive layer 400.

[0170] In addition, in the above fourth example, the third silencer pad can be fixed in the relay without the adhesive layer 400, or the third silencer pad can be bonded to the surface of the housing 100 or the main assembly 200 through the adhesive layer 400.

[0171] In a specific embodiment, the relay provided by the present disclosure is provided with a first sound-absorbing pad 310 and a second sound-absorbing pad 320. The first sound-absorbing pad 310 is placed on the top of the main assembly 200, and the second sound-absorbing pad 320 is placed on the bottom of the main assembly 200, and both are fixed by an adhesive layer 400.

[0172] It should be noted that this specific embodiment has the following advantages: 1. The upper and lower sides are convenient for assembly operations; 2. The upper and lower sides are fixed by gluing. On the basis of stable structural bonding, the outer shell 100 and the main body component 200 do not need to be fixed by gluing on the left and right sides. Due to the gap set between the outer shell 100 and the main body component 200 on both sides, the noise propagation on both sides needs to pass through the air medium, and air propagation is slower than solid propagation and has smaller propagation energy. Therefore, this layout can also reduce the propagation of internal noise to the outside.

[0173] It's worth noting that the first noise-absorbing pad 310 in the aforementioned figures is shown as a single piece. Of course, the first noise-absorbing pad 310 can also include multiple sub-gaskets 301, with the multiple sub-gaskets 301 spaced apart to reduce assembly difficulty and effectively utilize space within the relay. For example, as shown in Figures 27 and 28 , when there are two static contacts 212 within the relay, the first noise-absorbing pad 310 can include two sub-gaskets 301, each with an opening 3111 to facilitate assembly between the sub-gasket 301 and the static contact 212.

[0174] When the sub-gasket 301 is specifically provided, a first extension portion 312 , a guide slope 313 , a second extension portion 314 and a third extension portion 315 may be provided on the sub-gasket 301 as required, and details thereof will not be repeated.

[0175] Furthermore, when configuring the relay provided in the embodiments of the present disclosure, the relay is not limited to having only two static contacts 212. The number of static contacts 212 within the relay can be set as needed. For example, as shown in FIG29 , the number of static contacts 212 within the relay is four. Accordingly, as shown in FIG30 , the first sound-absorbing pad 310 within the relay can be provided with four openings 3111 corresponding to the corresponding static contacts 212.

[0176] It can be understood that the first sound-absorbing pad 310 in Figure 30 is an integrated structure. Of course, the first sound-absorbing pad 310 can also be set to include two sub-gaskets 301, three sub-gaskets 301 and four sub-gaskets 301, and the specific structures between the sub-gaskets 301 can be the same or different.

[0177] In addition, each of the first sound-absorbing pad 310, the second sound-absorbing pad 320, or the third sound-absorbing pad can be a multi-layer structure or a single-layer structure. For example, the first sound-absorbing pad 310 includes multiple stacked sound-absorbing layers. Specifically, adjacent sound-absorbing layers can be fixed (e.g., bonded) or have no connection relationship. Of course, it can also be arranged that the sound-absorbing layer located at the top of the multi-layer sound-absorbing layer can be fixed (e.g., bonded) to the housing 100, and the sound-absorbing layer located at the bottom of the multi-layer sound-absorbing layer can be fixed (e.g., bonded) to the main assembly 200.

[0178] It is worth noting that any of the first, second, and third sound-absorbing pads in the above-mentioned sound-absorbing pad set 300 can be made of an elastic material such as synthetic rubber, synthetic silicone rubber, synthetic resin, sponge gasket, polyurethane, etc. Moreover, the materials of the first, second, and third sound-absorbing pads 310, 320, and 310 can be the same or different.

[0179] The present disclosure also provides a method for manufacturing a relay. Referring to the structures shown in Figures 1 to 3 and 5 to 30 , the method includes assembling a main body assembly 200 and a sound-absorbing pad assembly 300 within a housing 100. The method for assembling the main body assembly 200 and the sound-absorbing pad assembly 300 within the housing 100 includes:

[0180] The sound-absorbing pad assembly 300 is placed in at least a portion of the area between the main body assembly 200 and the housing 100;

[0181] The fixing area between the housing 100 and the main body assembly 200 fixes the main body assembly 200 in the housing 100 .

[0182] It should be noted that in the relay produced using the preparation method provided in the embodiments of the present disclosure, the main assembly 200 is fixed relative to the housing 100, which can reduce or even prevent the main assembly 200 from shaking relative to the housing 100, thereby reducing the noise generated within the relay. Furthermore, the relay includes a sound-absorbing pad assembly 300 between the main assembly 200 and the housing 100. This pad assembly 300 provides flexible damping to absorb vibrations, achieving a noise reduction effect. This reduces the transmission of noise generated by the closing and releasing actions to the outside of the relay, thereby improving the user experience.

[0183] In addition, since the sound-absorbing pad set 300 has a certain elasticity, the sound-absorbing pad set 300 can also play a buffering role to reduce the vibration of the internal structural parts of the relay and improve the structural performance of the relay.

[0184] It is understandable that the preparation method can also be used to prepare the relay provided in the embodiment of the present disclosure, and the details will not be repeated here.

[0185] In one embodiment, a method for fixing the main body assembly 200 in the housing 100 at a fixing area between the housing 100 and the main body assembly 200 includes:

[0186] Glue is dispensed in the fixing area between the main assembly 200 and the housing 100 , and the main assembly 200 and the housing 100 are bonded together by the cured glue layer 400 .

[0187] It is understood that in this embodiment, the fixing area is formed as an adhesive fixing area. The adhesive process is simple and easy to operate, and the adhesive has strong adhesive force and can reliably and stably adhere the parts and components it contacts.

[0188] It should be noted that after the glue is cured, a glue layer 400 will be formed. The glue layer 400 can bond and fix the housing 100 and the main assembly 200 to reduce or even prevent the main assembly 200 from shaking relative to the housing 100, thereby reducing the noise generated in the relay.

[0189] Moreover, when the sound-absorbing pad set 300 is set in the adhesive fixing area, the sound-absorbing pad set 300 is equivalent to being placed on the solid propagation path of the noise, which can better play the role of buffering, vibration absorption and sound insulation and noise reduction.

[0190] In one embodiment, a sound-absorbing pad assembly 300 is provided in at least a portion of the fixing area.

[0191] It should be noted that this embodiment places the muffler assembly 300 within the fixed area, which effectively utilizes the space within the relay and improves its space efficiency. Furthermore, this arrangement facilitates the muffler assembly 300 to separate the adhesive layer 400 within the fixed area, providing cushioning and noise reduction, thereby improving the structural performance of the relay.

[0192] When the sound-absorbing pad assembly 300 is disposed in the housing 100 , there are various possible ways to fix the sound-absorbing pad assembly 300 , including at least one of the following.

[0193] In a specific embodiment, a method for dispensing glue in a fixing area between the main assembly 200 and the housing 100 and bonding the main assembly 200 and the housing 100 through a cured adhesive layer 400 includes:

[0194] Glue is dispensed between the main body component 200 and the housing 100 , and the main body component 200 and the sound-absorbing pad assembly 300 integrally formed with the housing 100 are bonded together through the cured glue layer 400 .

[0195] It should be noted that by integrally molding the housing 100 and the muffler assembly 300 through injection molding, the number of components within the relay can be reduced, the number of glue dispensing steps can be reduced, and the assembly difficulty can be lowered. Furthermore, in this embodiment, the muffler assembly 300 is bonded to the main assembly 200 via an adhesive layer 400. This structural arrangement prevents the muffler assembly 300 from shaking relative to the main assembly 200, thereby improving the stability of the main assembly 200 relative to the housing 100 and enabling the muffler assembly 300 to better perform its noise reduction or buffering functions.

[0196] In another specific embodiment, a method for bonding the main assembly 200 and the housing 100 by dispensing glue in a fixing area between the main assembly 200 and the housing 100 through a cured adhesive layer 400 includes:

[0197] Apply glue between the main assembly 200 and the sound-absorbing pad assembly 300, and bond the sound-absorbing pad assembly 300 and the main assembly 200 through the cured glue layer 400;

[0198] Glue is dispensed between the housing 100 and the sound-absorbing pad assembly 300 , and the sound-absorbing pad assembly 300 and the housing 100 are bonded together through the cured glue layer 400 .

[0199] It should be noted that when the noise-absorbing pad assembly 300 is fixed to both the housing 100 and the main assembly 200, not only is the noise-absorbing pad assembly 300's noise reduction capability enhanced, but the relay's withstand voltage insulation capability is also improved. Specifically, because the noise-absorbing pad assembly 300 is positioned between the housing 100 and the main assembly 200, and the noise-absorbing pad assembly 300 is effectively fixed to the housing 100 and the main assembly 200 (by gluing or integrally forming), a gap is unlikely to form between the main assembly 200 and the housing 100, preventing electricity from "creeping" through the gap and affecting the withstand voltage insulation performance between the main contacts.

[0200] As shown in Figure 5, the housing 100 may include a first shell 110 and a second shell 120; the sound-absorbing pad assembly 300 may include a first sound-absorbing pad 310 and a second sound-absorbing pad 320 arranged opposite to each other. Accordingly, based on the above two specific embodiments, combined with the structures of the housing 100 and the sound-absorbing pad assembly 300, the preparation method provided in the embodiment of the present disclosure includes: dispensing glue between the main body assembly 200 and the first shell 110, and fixing the first sound-absorbing pad 310 between the first shell 110 and the main body assembly 200 through the cured glue layer 400; dispensing glue between the main body assembly 200 and the second shell 120, and fixing the second sound-absorbing pad 320 between the second shell 120 and the main body assembly 200 through the cured glue layer 400.

[0201] It should be noted that this embodiment has the following advantages: 1. The upper and lower sides are convenient for assembly operations; 2. The upper and lower sides are fixed by gluing. On the basis of stable structural bonding, the outer shell 100 and the main body component 200 do not need to be fixed by gluing on the left and right sides. Due to the gap set between the outer shell 100 and the main body component 200 on both sides, the noise propagation on both sides needs to pass through the air medium, and air propagation is slower than solid propagation and has smaller propagation energy. Therefore, this layout can also reduce the propagation of internal noise to the outside.

[0202] It is worth noting that the order of glueing the second sound-absorbing pad 320 and the first sound-absorbing pad 310 can be set according to needs, and is not limited to first glueing the first sound-absorbing pad 310 and then glueing the second sound-absorbing pad 320.

[0203] Taking the example of dispensing glue between the main body component 200 and the first sound-absorbing pad 310 and between the first sound-absorbing pad 310 and the first shell 110, you can first dispense glue on the insulating cover 211 of the main body component 200, and then assemble the first sound-absorbing pad 310; after the first sound-absorbing pad 310 is assembled, you can dispense glue on the first sound-absorbing pad 310 again to fix the first sound-absorbing pad 310 and the first shell 110.

[0204] Of course, the first sound-absorbing pad 310 and the first shell 110 may be assembled first, and then the first sound-absorbing pad 310 and the main body assembly 200 may be assembled. The details will not be repeated here.

[0205] Finally, it should be noted that: it is understandable that the various embodiments / implementations provided in the present disclosure can be combined with each other without causing any contradiction, and they will not be illustrated one by one here.

[0206] In the disclosed embodiments, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless expressly limited otherwise. Terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the disclosed embodiments can be understood according to the specific circumstances.

[0207] In the description of the disclosed embodiments, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the disclosed embodiments and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the disclosed embodiments.

[0208] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the disclosed embodiments. Throughout this specification, schematic representations of these 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 any one or more embodiments or examples.

[0209] The above are merely preferred embodiments of the disclosed embodiments and are not intended to limit the disclosed embodiments. Those skilled in the art will readily appreciate that various modifications and variations of the disclosed embodiments are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the disclosed embodiments shall be included within the scope of protection of the disclosed embodiments.

Claims

1. A relay, characterized in that: It includes a shell, a main body component for realizing load switching, and a sound-absorbing pad group; a fixing area is provided between the shell and the main body component, and the main body component is fixed in the shell in the fixing area; the sound-absorbing pad group is located in the shell and is placed in at least a part of the area between the shell and the main body component.

2. The relay according to claim 1, wherein: The sound-absorbing pad group is provided in at least a portion of the fixing area.

3. The relay according to claim 1 or 2, characterized in that: An adhesive layer is provided in the fixing area.

4. The relay according to claim 3, characterized in that The shell and the sound-absorbing pad group are an integrally formed structure, and the sound-absorbing pad group and the main body component are bonded by the adhesive layer.

5. The relay according to claim 3, characterized in that The shell and the sound-absorbing pad group are split structures, and the main body component and the sound-absorbing pad group are bonded by the adhesive layer, and the shell and the sound-absorbing pad group are bonded by the adhesive layer.

6. The relay according to claim 3, characterized in that The housing is provided with a revealing hole; The main body component comprises a main body portion and a protruding portion; the protruding portion protrudes from the surface of the main body portion and is partially placed in the corresponding exposure hole.

7. The relay according to claim 6, characterized in that The sound-absorbing pad group includes a first sound-absorbing pad, which is located between the side of the shell where the exposure hole is set and the main body; the first sound-absorbing pad includes a main body, which is provided with an opening, and the protrusion extends into the exposure hole through the corresponding opening.

8. The relay according to claim 7, characterized in that The first sound-absorbing pad further includes a first extension portion for blocking glue, wherein the first extension portion is connected to the main body portion and extends between the side wall of the exposure hole and the protruding portion.

9. The relay according to claim 8, characterized in that The first sound-absorbing pad forms a first glue storage space on a side facing the main body, together with the side wall of the protruding portion and the main body, and the first glue storage space is used to fill the glue layer.

10. The relay according to claim 9, characterized in that The first sound-absorbing pad is provided with a guiding inclined surface around the protruding portion; along the direction where the protruding portion approaches the exposure hole, the distance between the guiding inclined surface and the protruding portion gradually decreases.

11. The relay according to claim 8, characterized in that The first sound-absorbing pad also includes a second extension portion, which is located on the same side of the main body as the first extension portion, and is located on the side of the first extension portion facing away from the protruding portion, and is spaced apart from the first extension portion. A second glue storage space is formed between the second extension portion, the first extension portion and the inner wall of the outer shell.

12. The relay according to claim 11, wherein: The second extension portion abuts against an inner wall of the housing on one side facing the main body.

13. The relay according to claim 7, characterized in that The first sound-absorbing pad further includes a third extending portion, which is located on a side of the main body facing away from the shell where the exposure hole is provided, and the third extending portion abuts against an outer wall of the main body.

14. The relay according to claim 7, wherein: The first sound-absorbing pad is provided with an avoidance portion.

15. The relay according to claim 14, characterized in that The avoidance portion is a avoidance through hole.

16. The relay according to claim 14, wherein: The avoidance portion is a avoidance groove, and the avoidance groove is recessed from the main body portion toward a side surface of the main body portion in a direction away from the main body portion.

17. The relay according to claim 16, characterized in that On a side of the main body away from the main body, a convex structure is formed on the main body at a position corresponding to the avoidance groove, and a convex rib is provided on the convex structure.

18. The relay according to claim 7, wherein: The first sound-absorbing pad includes a plurality of sub-gaskets, and the plurality of sub-gaskets are arranged at intervals.

19. The relay according to any one of claims 6 to 18, characterized in that: The sound-absorbing pad set includes a second sound-absorbing pad located between the other side of the main body from which the protruding portion is led and the housing.

20. The relay according to claim 19, wherein A glue storage groove is provided on one side of the second sound-absorbing pad facing toward and / or facing away from the main body.

21. The relay according to claim 19, wherein The sound-absorbing pad set includes a third sound-absorbing pad located between a side wall of the shell and a side wall of the main body assembly.

22. The relay according to any one of claims 6 to 18, characterized in that: The main body assembly includes a sealing unit, which includes an insulating cover, a static contact, a moving contact piece and an elastic member. The static contact forms the protrusion, wherein the moving contact piece is placed in the insulating cover and can move relative to the static contact to contact or separate from the static contact; the static contact is fixed relative to the insulating cover, and the side of the static contact facing away from the moving contact piece extends to the outside of the insulating cover and is exposed by the exposure hole; the elastic member is placed on the side of the moving contact piece facing away from the static contact to provide pressure for the contact between the moving contact piece and the static contact.

23. The relay according to claim 22, characterized in that The sealing unit also includes a push rod module, which includes a bracket, a support seat and a support rod. The bracket includes a base plate, which is located on one side of the moving contact piece, and the elastic member is placed between the base plate and the moving contact piece; the support rod is used to drive the contact and separation of the moving contact piece and the static contact, and one axial end of the support rod is fixed to the support seat, and along the axial direction of the support rod, the bracket is fixed to the side of the support seat facing away from the support rod.

24. The relay according to claim 23, characterized in that The main body assembly further includes an electromagnet unit, which is used to drive the support rod to perform reciprocating motion, and the movable contact piece follows the support rod.

25. A method for preparing a relay, characterized in that: include: Assembling the main body assembly and the sound-absorbing pad group in the housing, the method of assembling the main body assembly and the sound-absorbing pad group in the housing comprising: placing the sound-absorbing pad assembly in at least a portion of the area between the main body assembly and the shell; A securing region between the housing and the body assembly secures the body assembly within the housing.

26. The method for preparing a relay according to claim 25, wherein: A method for securing the body assembly within the housing at a securing area between the housing and the body assembly comprises: Glue is dispensed in a fixing area between the main body component and the shell, and the main body component and the shell are bonded together by the cured glue layer.

27. The method for preparing a relay according to claim 26, wherein: The sound-absorbing pad group is provided in at least a portion of the fixing area.

28. The method for preparing a relay according to claim 27, wherein: The method of dispensing glue in a fixing area between the main body component and the shell and bonding the main body component and the shell through a cured glue layer comprises: Glue is dispensed between the main body component and the shell, and the main body component and the sound-absorbing pad group integrally formed with the shell are bonded together through the cured glue layer.

29. The method for preparing a relay according to claim 27, wherein: The method of dispensing glue in a fixing area between the main body component and the shell and bonding the main body component and the shell through a cured glue layer comprises: Dispensing glue between the main body component and the sound-absorbing pad group, and bonding the sound-absorbing pad group and the main body component through the cured glue layer; Glue is dispensed between the shell and the sound-absorbing pad group, and the sound-absorbing pad group and the shell are bonded together by the cured glue layer.

30. The method for preparing a relay according to claim 28 or 29, characterized in that: The shell includes a first shell and a second shell; the sound-absorbing pad group includes a first sound-absorbing pad and a second sound-absorbing pad arranged opposite to each other; the preparation method includes: Dispensing glue between the main body assembly and the first shell, and fixing the first sound-absorbing pad between the first shell and the main body assembly through the cured glue layer; Glue is dispensed between the main body component and the second shell, and the second sound-absorbing pad is fixed between the second shell and the main body component through the cured glue layer.

Images