Relay

Abstract

The present disclosure relates to the technical field of electronic control devices, and specifically relates to a relay. The relay comprises: a first shell, a magnetically conductive part and a noise reduction pad, wherein the first shell is located on one side of the magnetically conductive part; the magnetically conductive part comprises a base plate and a side plate, the side plate being connected to at least part of the base plate in the circumferential direction of the base plate; and a fixing area is provided between the base plate and the first shell, and the noise reduction pad is arranged in at least part of the fixing area. By optimizing the structure of the relay, noise transmitted from the bottom of the relay to the exterior can be reduced, thereby improving user experience.

Description

relay

[0001] This disclosure claims priority to Chinese patent application No. 202420406760.1 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. 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] When actually using a relay, there is closing noise and releasing noise inside the relay. Or, during the on-off process of the relay, other parts may collide with each other, generating noise.

[0005] 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.

[0006] Therefore, there is an urgent need to provide a relay that can reduce noise. Summary of the Invention

[0007] An embodiment of the present disclosure provides a relay that can reduce noise transmitted from the bottom of the relay to the outside by optimizing its own structure, thereby improving user experience.

[0008] An embodiment of the present disclosure provides a relay, comprising: a first shell, a magnetic conductive portion and a sound-absorbing pad; the first shell is located on one side of the magnetic conductive portion; the magnetic conductive portion includes a bottom plate and a side plate, and along the circumference of the bottom plate, the side plate is connected to at least a portion of the bottom plate; a fixed area is provided between the bottom plate and the first shell, and a sound-absorbing pad is provided in at least a portion of the fixed area.

[0009] According to some disclosed embodiments, an adhesive layer is provided in the fixing area.

[0010] According to some disclosed embodiments, the first shell and the sound-absorbing pad are an integrally formed structure, and the sound-absorbing pad and the bottom plate are bonded by the adhesive layer.

[0011] According to some disclosed embodiments, the first shell and the sound-absorbing pad are split structures, and the bottom plate and the sound-absorbing pad are bonded together by the adhesive layer, and the first shell and the sound-absorbing pad are bonded together by the adhesive layer.

[0012] According to some disclosed embodiments, at least one of the sound-absorbing pad, the first shell, and the bottom plate is provided with a glue storage groove for storing the glue layer.

[0013] According to some disclosed embodiments, the relay further includes a magnetic conductive cylinder, which is located on one side of the base plate, and the side plate surrounds at least a portion of the magnetic conductive cylinder; the base plate is provided with a through hole, and at least a portion of the magnetic conductive cylinder is exposed from the through hole; the silencer pad is provided with a positioning structure, and the positioning structure is used to position the portion of the magnetic conductive cylinder exposed from the through hole.

[0014] According to some disclosed embodiments, a protruding structure is provided on the side of the first shell facing the bottom plate; and the sound-absorbing pad is provided with an avoidance notch for avoiding the protruding structure.

[0015] According to some disclosed embodiments, flange structures extend from both sides of the sound-absorbing pad, and the flange structures are placed between the side panels and the side portions of the first shell.

[0016] According to some disclosed embodiments, the side plate is an annular side plate, and the annular side plate cooperates with the bottom plate to form a cup-shaped structure.

[0017] According to some disclosed embodiments, the side plate includes at least two sub-side plates, and the at least two sub-side plates are spaced apart and distributed along the circumference of the bottom plate.

[0018] According to some disclosed embodiments, the relay further includes a second housing, wherein the second housing is fixed relative to the first housing to form a chamber.

[0019] According to some disclosed embodiments, the second shell is provided with an exposure hole;

[0020] The relay also includes a sealing unit, which includes an insulating cover, a static contact, a movable contact piece and an elastic member, wherein the movable contact piece is placed in the insulating cover and can move relative to the static contact to contact or separate with the static contact; the static contact is fixed relative to the insulating cover, and the side of the static contact facing away from the movable 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 movable contact piece facing away from the static contact to provide pressure for the contact between the movable contact piece and the static contact.

[0021] One embodiment disclosed above has at least the following advantages or beneficial effects:

[0022] 1. In the relay provided herein, the base plate of the magnetic conductive portion is fixed to the first housing in a fixed area, which can reduce or even prevent the magnetic conductive portion from shaking relative to the first housing, thereby reducing noise generated within the relay. Furthermore, the relay provided herein includes a sound-absorbing pad between the base plate of the magnetic conductive portion and the first housing. This pad, placed in the noise propagation path, provides flexible damping to absorb vibrations, achieving a noise reduction effect. This reduces noise transmitted from the bottom of the relay to the outside, thereby improving the user experience. Furthermore, due to its certain elasticity, the pad also acts as a buffer, reducing vibrations within the relay's internal components and improving the relay's structural performance.

[0023] At the same time, the silencer pad in the fixed area is in a fixed state. This structural setting can prevent the silencer pad from shaking in the relay, allowing the silencer pad to better play its noise reduction, shock absorption and buffering functions.

[0024] 2. In the relay provided herein, the first housing and the base plate of the magnetically conductive portion are bonded together via an adhesive layer within the fixed area. This improves the structural stability of the fixed first housing and magnetically conductive portion, preventing the magnetically conductive portion from shaking relative to the first housing, thereby reducing noise. Furthermore, the gluing process is simple and easy to operate, and the adhesive possesses strong adhesion, enabling reliable and stable bonding of the parts and components it contacts. Furthermore, when the sound-absorbing pad is positioned within the fixed area, it is effectively placed in the solid propagation path of noise, thereby enhancing its cushioning, vibration absorption, and soundproofing properties.

[0025] 3. In the relay provided by the present disclosure, flange structures extend from both sides of the noise-absorbing pad, and the flange structures are placed between the side plates and the side of the first shell to further enhance the buffering, vibration reduction and noise reduction effects of the relay on the side. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG1 is an exploded perspective view of a relay according to an embodiment of the present disclosure;

[0027] FIG2 is a schematic diagram showing the three-dimensional structure of the sealing unit in FIG1 ;

[0028] FIG3 shows a schematic cross-sectional view of the relay of FIG1 ;

[0029] FIG4 shows a cross-sectional schematic diagram of a relay in the related art;

[0030] FIG5 is a schematic diagram showing the three-dimensional structure of the first type of sound-absorbing pad in FIG1 ;

[0031] FIG6 is a schematic diagram showing the three-dimensional structure of a second type of sound-absorbing pad according to an embodiment of the present disclosure;

[0032] FIG7 shows a bottom view of the sound-absorbing pad in FIG6 ;

[0033] FIG8 shows a top view of the sound-absorbing pad in FIG6 ;

[0034] FIG9 shows a schematic cross-sectional view along line AA in FIG8 ;

[0035] FIG10 is a cross-sectional view showing the silencer pad in FIG6 assembled in a relay;

[0036] FIG11 is a cross-sectional view showing another type of noise-reducing pad assembled in a relay;

[0037] FIG12 is a schematic diagram showing the three-dimensional structure of a magnetic conductive part in a relay provided by an embodiment of the present disclosure;

[0038] FIG13 is a schematic diagram showing the three-dimensional structure of another magnetic conductive part in a relay provided in an embodiment of the present disclosure.

[0039] The following are the descriptions of the reference numerals:

[0040] Related technologies: 01. Housing; 02. Insulation cover; 03. Static contact; 04. Moving contact piece; 05. Elastic member; 06. Push rod module; 07. Yoke plate; 08. Coil; 09. Static iron core; 010. Moving iron core; 011. Reset member; 012. U-shaped yoke; 013. Coil frame;

[0041] The present disclosure includes: 100, housing; 110, first housing; 120, second housing; 121, exposure hole; 200, main body assembly; 210, sealing unit; 211, insulation 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 iron plate; 217, metal cover; 218, auxiliary contact; 220, electromagnet unit Element; 221, coil frame; 222, coil; 223, static iron core; 224, moving iron core; 225, reset member; 226, magnetic conductive part; 2261, bottom plate; 2262, side plate; 2263, through hole; 227, magnetic conductive cylinder; 230, arc extinguishing unit; 231, arc extinguishing magnet; 232, yoke iron clamp; 300, silencer pad; 310, glue storage groove; 320, positioning structure; 330, avoidance gap; 340, flange structure; S, fixed area. DETAILED DESCRIPTION

[0042] 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.

[0043] 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.

[0044] 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 121 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.

[0045] As an example, referring to the structure shown in FIG1 , the housing 100 includes a first shell 110 and a second shell 120 . The second shell 120 and the first shell 110 are fixed to 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 . The first shell 110 and the second shell 120 can be fixed by snapping, interference fit, or gluing. In addition, one of the first shell 110 and the second shell 120 can be a cover structure, and the other can be a cover plate. The specific configuration can be determined according to needs and will not be described in detail here.

[0046] As shown in Figures 1 to 3, the second shell 120 is provided with an exposure hole 121; 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 can move relative to the static contact 212 to contact or separate from 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 121; 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.

[0047] 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.

[0048] 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 .

[0049] 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.

[0050] 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 achieving arc extinguishing.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 1 and 3 , the main body assembly 200 and the electromagnet unit 220 are used to drive the support rod 2153 to reciprocate, so that the movable contact piece 213 moves with the support rod 2153 .

[0055] It is understandable that the support rod 2153 reciprocates under the driving action of the electromagnet unit 220 , so that 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 .

[0056] 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.

[0057] 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, a reset member 225, a magnetic conductive portion 226 and a magnetic conductive cylinder 227. The coil frame 221 is in the shape of a hollow cylinder 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.

[0058] 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.

[0059] The magnetic tube 227 is sleeved on the outside of the metal cover 217, and the magnetic portion 226 is surrounded by the outside of the magnetic tube 227. The coil frame 221 is placed between the magnetic tube 227 and the magnetic portion 226 to enhance the magnetic conductivity and improve the performance of the electromagnet unit 220.

[0060] 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 stationary iron core 09 and the moving iron core 010.

[0061] Continuing to refer to Figure 4, before the relay is disconnected, the main contacts are in a closed state, the moving iron core 010 and the static iron core are in a closed state, the elastic member 05 is compressed, and the reset member 011 is also compressed, storing potential energy. When the coil 08 inside the relay is de-energized, 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 achieving the separation of the contacts of the relay, until the push rod module 06 hits the yoke iron plate 07 (or other stop member), 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" generated by the collision of the push rod module 06 and the yoke iron plate 07 (or other stop member) 4 is relatively large.

[0062] In addition, during the on-off process of the relay, other components may collide with each other and generate noise.

[0063] Figure 4 also illustrates possible noise propagation paths within the relay. In path a, shown in Figure 4, noise primarily propagates through the solid body, from yoke plate 07 and the bottom of magnetic conductive portion 012 to housing 01. Alternatively, in path b, noise may propagate along yoke plate 07, coil bobbin 013, and the bottom of magnetic conductive portion 012 to housing 01. It should be understood that these examples are intended to illustrate potential locations where noise may occur within the relay.

[0064] Continuing with reference to the structures shown in Figures 1, 3, and 5, the relay provided in the present embodiment includes a first housing 110, a magnetic conductive portion 226, and a sound-absorbing pad 300. The first housing 110 is located on one side of the magnetic conductive portion 226. The magnetic conductive portion 226 includes a bottom plate 2261 and a side plate 2262, with the side plate 2262 connecting at least a portion of the bottom plate 2261 along the circumference of the bottom plate 2261. A fixing area S is defined between the bottom plate 2261 and the first housing 110, and the sound-absorbing pad 300 is located 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 first housing 110 and the bottom plate 2261 of the magnetic conductive portion 226, which can be fixed, and is not limited to the area shown in Figure 3. The sound-absorbing pad 300 may be located in all or part of the fixing area S.

[0065] It should be noted that in the relay provided by the embodiment of the present disclosure, the bottom plate 2261 of the magnetic conductive portion 226 is fixed to the first shell 110 in the fixing area S, which can reduce or even prevent the magnetic conductive portion 226 from shaking relative to the first shell 110, thereby reducing the noise generated in the relay. At the same time, the relay provided by the embodiment of the present disclosure is provided with a sound-absorbing pad 300 between the bottom plate 2261 of the magnetic conductive portion 226 and the first shell 110. The sound-absorbing pad 300 is placed on the noise propagation path and can perform flexible damping to absorb vibrations, thereby achieving a noise reduction effect, thereby reducing the noise transmitted from the bottom of the relay to the outside and improving the user experience. In addition, since the sound-absorbing pad 300 has a certain degree of elasticity, the sound-absorbing pad 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.

[0066] At the same time, the muffler pad 300 in the fixed area S is in a fixed state. This structural setting can prevent the muffler pad 300 from shaking in the relay, so that the muffler pad 300 can better play the noise reduction, shock absorption and buffering functions.

[0067] In one embodiment, an adhesive layer (not shown) is provided in the fixing area S. When fixing the first housing 110 and the bottom plate 2261 of the magnetic conductive portion 226, the first housing 110 and the bottom plate 2261 of the magnetic conductive portion 226 are preferably fixedly connected via the adhesive layer (i.e., an adhesive layer is provided in the fixing area S). In this case, the fixing area S can be understood as an adhesive fixing area.

[0068] It should be noted that when the first shell 110 and the bottom plate 2261 of the magnetic conductive part 226 are bonded through the glue layer in the fixing area S, the stability of the structure after the first shell 110 and the magnetic conductive part 226 are fixed can be improved, and the magnetic conductive part 226 can be prevented from shaking relative to the first shell 110, thereby reducing noise.

[0069] At the same time, the gluing process is simple and easy to operate, and the glue has strong adhesion, which can reliably and stably bond the parts and components it contacts.

[0070] Of course, other fixing forms can also be used between the first shell 110 and the bottom plate 2261 of the magnetic conductive part 226. For example, the first shell 110 and the magnetic conductive part 226 can be fixedly connected in the fixing area S by interference fit.

[0071] It is understood that the adhesive layer can be formed by glue or double-sided tape. When glue is used to form the adhesive layer, the adhesive layer can be formed by dispensing or pouring glue. For example, glue can be dispensed between the first housing 110 and the bottom plate 2261. After the glue solidifies, an adhesive layer is formed, which can bond and fix the first housing 110 and the bottom plate 2261 of the magnetic conductive portion 226.

[0072] It's worth noting that when glue is applied between the first housing 110 and the bottom plate 2261 of the magnetic conductive portion 226, the resulting cured glue layer may create a noise transmission path between the first housing 110 and the bottom plate 2261 of the magnetic conductive portion 226. When the sound-absorbing pad 300 is positioned in the fixing area S, it effectively places it in the solid path of noise transmission, thereby better facilitating its cushioning, vibration absorption, and sound insulation and reduction functions.

[0073] In one embodiment, the first housing 110 and the muffler pad 300 are integrally formed to reduce the number of components in the relay, reduce the number of glue dispensing steps, and reduce assembly difficulty. Specifically, the first housing 110 and the muffler pad 300 can be integrally formed by injection molding.

[0074] In this embodiment, the sound-absorbing pad 300 is bonded to the bottom plate 2261 of the magnetic conductive portion 226 via an adhesive layer, effectively fixing the relative positions of the first housing 110 and the magnetic conductive portion 226. It should be understood that when assembling a relay formed with this structure, only the magnetic conductive portion 226 and the first housing 110 need to be glued, which can reduce the number of gluing steps and ease assembly difficulty.

[0075] In another embodiment, the first housing 110 and the sound-absorbing pad 300 are separate structures, and the bottom plate 2261 of the magnetic conductive portion 226 is bonded to the sound-absorbing pad 300 via an adhesive layer. The first housing 110 and the sound-absorbing pad 300 are also bonded via an adhesive layer. The adhesive bonding process is simple and easy to operate, and the adhesive has strong adhesion, enabling reliable and stable bonding of the parts and components it contacts.

[0076] Of course, when the sound-absorbing pad 300 is connected to the first housing 110 and the magnetic conductive portion 226 by an adhesive layer, the adhesive layer formed by the magnetic conductive portion 226 or the first housing 110 and the sound-absorbing pad 300 is the adhesive layer used to connect the first housing 110 and the magnetic conductive portion 226. Similarly, when the sound-absorbing pad 300 and the first housing 110 are integrally formed, if the sound-absorbing pad 300 and the magnetic conductive portion 226 are connected by an adhesive layer, the adhesive layer is the adhesive layer used to connect the first housing 110 and the magnetic conductive portion 226.

[0077] To enhance the bonding strength of the sound-absorbing pad 300 with other structures, in one embodiment, at least one of the sound-absorbing pad 300, the first housing 110, and the bottom plate 2261 is provided with a glue reservoir for storing the adhesive layer. For example, as shown in Figures 5 and 6 through 10, the glue reservoir 310 may be provided only on the side of the sound-absorbing pad 300 intended for adhesive fixation. Of course, the glue reservoir can also be provided on the first housing 110 and / or the bottom plate 2261 as needed, and the details will not be repeated here.

[0078] In one embodiment, referring to the structure shown in Figure 3, the magnetic tube 227 in the relay provided by the embodiment of the present disclosure is located on one side of the base plate 2261, and the side plate 2262 surrounds at least part of the magnetic tube 227; the base plate 2261 is provided with a through hole 2263 (as shown in Figures 12 and 13), and at least part of the magnetic tube 227 is exposed from the through hole 2263; as shown in Figures 5 to 10, the silencer pad 300 is provided with a positioning structure 320, which is used to position the part of the magnetic tube 227 exposed through the through hole 2263.

[0079] It is worth noting that, as shown in Figures 5 to 10, the positioning structure 320 is shown as a protrusion 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 protrusion, but can also be a concave structure or a combination of a protrusion and a concave structure. The details will not be repeated here.

[0080] When setting the internal structure of the relay, a protruding structure may be provided on the side of the first shell 110 facing the bottom plate 2261; at this time, as shown in Figures 6 to 8, an avoidance notch 330 for avoiding the protruding structure can be provided on the sound-absorbing pad 300 to reduce the difficulty of assembly and improve the stability of the sound-absorbing pad 300 relative to the first shell 110 after assembly, so that the sound-absorbing pad 300 can better play the role of noise reduction, shock absorption and buffering.

[0081] In one embodiment, as shown in FIG11 , flange structures 340 extend from both sides of the sound-absorbing pad 300 . The flange structures 340 are placed between the side panels 2262 and the side of the first housing 110 to further enhance the buffering, vibration reduction, and noise reduction effects of the relay on the side.

[0082] It is worth noting that the above figures all show the muffler pad 300 as a single piece. Of course, the muffler pad 300 can also be configured to include multiple sub-pads, which are spaced apart to reduce assembly difficulty and reasonably utilize the space inside the relay.

[0083] Furthermore, the aforementioned sound-absorbing pad 300 may be a multi-layer structure or a single-layer structure. For example, in the case where the sound-absorbing pad 300 includes multiple stacked sound-absorbing layers, adjacent sound-absorbing layers may be fixed (e.g., bonded), with the top sound-absorbing layer of the multi-layer sound-absorbing layer being fixed (e.g., bonded) to the first shell 110, and the bottom sound-absorbing layer of the multi-layer sound-absorbing layer being bonded to the magnetic conductive portion 226.

[0084] It is worth noting that the above-mentioned sound-absorbing pad 300 can be made of elastic materials such as synthetic rubber, synthetic silicone rubber, synthetic resin, sponge gasket and polyurethane.

[0085] When the magnetic conductive portion 226 in the embodiment of the present disclosure is provided, there are various possible structural forms of the inner bottom plate 2261 and the side plates 2262 of the magnetic conductive portion 226 .

[0086] In one embodiment, the side plate 2262 is an annular side plate that cooperates with the bottom plate 2261 to form a cup-shaped structure. It should be understood that the bottom plate 2261 in this embodiment can have a variety of shapes. For example, the bottom plate 2261 can be a circular plate or a square plate as shown in FIG. 12 .

[0087] In another embodiment, the side panel 2262 includes at least two sub-side panels, which are spaced apart along the circumference of the bottom panel 2261. It should be understood that the number of sub-side panels in this embodiment can be set as needed, for example, two, three, or four. For example, FIG13 shows the side panel 2262 as including two sub-side panels.

[0088] It is worth noting that, along the circumference of the bottom plate 2261, two adjacent sub-side plates form a gap on the side facing each other. The gap can extend from the top of the magnetic conductive portion 226 to the bottom plate 2261, and the details are not repeated here.

[0089] Furthermore, it is understood that in this embodiment, the shape of the bottom plate 2261 can be various, and for example, it can be a circular plate or a square plate. In a specific example, the bottom plate 2261 can be a circular plate as shown in FIG13 , in which case each sub-side plate is an arcuate sub-side plate, and each arcuate sub-side plate is convex in a direction away from the other arcuate sub-side plate.

[0090] In one embodiment, the second housing 120 is provided with an exposure hole 121. If the side where the relay leads out the static contact 212 is defined as the bottom, the second housing 120 can be understood as the top housing, and the first housing 110 can be understood as the bottom housing.

[0091] In one embodiment, at least a portion of the first shell 110 and the side panel 2262 are bonded and fixed.

[0092] When specifically configuring the internal structure of the relay, the second housing 120 can also be fixed to other components within the relay. If the fixing area S between the first housing 110 and the magnetic conductive portion 226 is defined as being located at the bottom of the relay, the fixing location between the second housing 120 and other components within the relay can be located at the top of the relay. Furthermore, the first housing 110 and / or the second housing 120 can also be adhesively fixed to the side of the relay, though details are omitted here.

[0093] Several specific application examples are now provided in combination with the first housing 110 and the second housing 120 .

[0094] Example 1: Set up an independent silencer pad 300, fix the silencer pad 300 to the first shell 110 and the bottom plate 2261 of the magnetic conductive part 226 respectively (for example, glue), and fix the second shell 120 to other structural parts in the relay (for example, the insulating cover 211) at the top with glue.

[0095] In a specific embodiment, the relay provided by the present disclosure is provided with a sound-absorbing pad 300. The sound-absorbing pad 300 is placed at the bottom of the magnetic conductive portion 226, and the sound-absorbing pad 300 is fixed to the first housing 110 and the magnetic conductive portion 226 by glue. The second housing 120 is also fixed to the insulating cover 211 by glue.

[0096] It should be noted that this example offers the following advantages: 1. Easy assembly of both the upper and lower sides; 2. Both the upper and lower sides can be fixed, and while the first shell 110 and the magnetic conductive portion 226 are structurally stable, no glue is required to secure the left and right sides. In this case, a gap is created between the shell 100 and the magnetic conductive portion 226, allowing noise from both sides to propagate through air. Air propagation is slower and has less energy than solid propagation. Therefore, this layout can also reduce the transmission of internal noise to the outside.

[0097] Example 2: The silencer pad 300 is integrated with the first shell 110, and the silencer pad 300 is fixed to the bottom plate 2261 of the magnetic conductive part 226 (for example, by gluing), and the second shell 120 is fixed to other structural parts in the relay (for example, the insulating cover 211) at the top by gluing.

[0098] Example 3: A separate sound-absorbing pad 300 is provided and secured (e.g., by gluing) to the first housing 110 and the bottom plate 2261 of the magnetic conductive portion 226. The outer shell 100 is then secured to the side plates 2262 by adhesive. It is understood that the adhesive placement on these sides depends on the structure of the inner plates 2262 of the magnetic conductive portion 226. The adhesive can be applied all around the perimeter or only on two opposing sides. The details are omitted here.

[0099] Example 4: The sound-absorbing pad 300 is integrated with the first shell 110 , and the sound-absorbing pad 300 is fixed to the bottom plate 2261 of the magnetic conductive part 226 (for example, by gluing), and the shell 100 and the side plate 2262 are fixed at the side by glue.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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: include: A first shell, a magnetic conductive part and a sound-absorbing pad; the first shell is located on one side of the magnetic conductive part; the magnetic conductive part includes a bottom plate and a side plate, and along the circumference of the bottom plate, the side plate is connected to at least a portion of the bottom plate; a fixed area is provided between the bottom plate and the first shell, and a sound-absorbing pad is provided in at least a portion of the fixed area.

2. The relay according to claim 1, wherein: An adhesive layer is provided in the fixing area.

3. The relay according to claim 2, characterized in that The first shell and the sound-absorbing pad are an integrally formed structure, and the sound-absorbing pad and the bottom plate are bonded together by the adhesive layer.

4. The relay according to claim 2, characterized in that The first shell and the sound-absorbing pad are split structures, and the bottom plate and the sound-absorbing pad are bonded together by the adhesive layer. The first shell and the sound-absorbing pad are bonded together by the adhesive layer.

5. The relay according to any one of claims 2 to 4, characterized in that: At least one of the sound-absorbing pad, the first shell and the bottom plate is provided with a glue storage groove for storing the glue layer.

6. The relay according to any one of claims 1 to 4, characterized in that: The relay also includes a magnetic conductive cylinder, which is located on one side of the base plate, and the side plate surrounds at least part of the magnetic conductive cylinder; the base plate is provided with a through hole, and at least part of the magnetic conductive cylinder is exposed from the through hole; the silencer pad is provided with a positioning structure, and the positioning structure is used to position the part of the magnetic conductive cylinder exposed from the through hole.

7. The relay according to any one of claims 1 to 4, characterized in that: The first shell is provided with a protruding structure on one side facing the bottom plate; the sound-absorbing pad is provided with an avoidance notch for avoiding the protruding structure.

8. The relay according to any one of claims 1 to 4, characterized in that: Flanged structures extend from both sides of the sound-absorbing pad, and the flanging structures are placed between the side plates and the side portions of the first shell.

9. The relay according to any one of claims 1 to 4, characterized in that: The side plate is an annular side plate, and the annular side plate cooperates with the bottom plate to form a cup-shaped structure.

10. The relay according to any one of claims 1 to 4, characterized in that: The side plate includes at least two sub-side plates, and the at least two sub-side plates are spaced apart and distributed along the circumference of the bottom plate.

11. The relay according to any one of claims 1 to 4, characterized in that: The relay further includes a second housing fixed relative to the first housing to form a chamber.

12. The relay according to claim 11, wherein: The second shell is provided with a revealing hole; The relay also includes a sealing unit, which includes an insulating cover, a static contact, a movable contact piece and an elastic member, wherein the movable contact piece is placed in the insulating cover and can move relative to the static contact to contact or separate with the static contact; the static contact is fixed relative to the insulating cover, and the side of the static contact facing away from the movable 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 movable contact piece facing away from the static contact to provide pressure for the contact between the movable contact piece and the static contact.

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