A relay

Abstract

The utility model discloses a relay, including accommodating piece and relay body, and the relay body is equipped with pin terminal, and pin terminal is equipped with the joint of the through accommodating piece and is used for with external electricity connection, and pin terminal is equipped with the body that is connected as an organic whole with joint, and the inside of accommodating piece is equipped with the limiting hole that cooperates with the body, and the bottom wall of accommodating piece is equipped with the through hole that supplies the joint and is through, and limiting hole and through hole are linked together, and the first gap is formed between joint and through hole. The application can realize the fixation of pin terminal through one point gum craft, and the assembly efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of relays, and specifically to a relay. Background Technology

[0002] A relay typically consists of a housing and a relay body. The relay body comprises the magnetic circuit portion and contact portion housed within the housing. The relay body has multiple pin terminals, each penetrating the housing and used for external electrical connection. During relay assembly, to ensure a secure fit between the pin terminals and the housing, an interference fit or zero-clearance fit is usually applied. However, since the housing is made of plastic, the plastic's positioning strength weakens at high temperatures, affecting the assembly of the pin terminals and providing poor protection. To address this, existing technologies use thermosetting adhesives to fill the space between the pin terminals and the housing via a dispensing process. However, due to the interference fit or zero clearance fit between the pin terminals and the housing, the adhesive only forms a thin layer on the surface of the housing after curing, resulting in poor bonding strength of the pin terminals. Therefore, existing technologies require dispensing adhesives around the pin terminals inside the relay before assembly and again after assembly. Each time the adhesive is filled, it needs to be heated and dried, resulting in two dispensing and drying processes. This complicates the assembly process, reduces assembly efficiency, and the double drying process can easily generate adhesive bubbles, leading to poor sealing. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned defects or problems in the background technology and provide a relay that can fix the pin terminals through a one-time dispensing process, resulting in high assembly efficiency.

[0004] To achieve the above objectives, the present invention and its preferred embodiments adopt the following technical solutions, but the embodiments are not limited to the following solutions:

[0005] Technical solution one and its related embodiments provide a relay, including a receiving member and a relay body. The relay body is provided with pin terminals. The pin terminals are provided with a connecting portion that penetrates the receiving member and is used for external electrical connection. The pin terminals are provided with a body integrally connected with the connecting portion. The receiving member is provided with a limiting hole that cooperates with the body. The bottom wall of the receiving member is provided with a through hole for the connecting portion to pass through. The limiting hole and the through hole are connected. A first gap is formed between the connecting portion and the through hole.

[0006] Based on technical solution one, there is also technical solution two. In technical solution two and its related embodiments, the pin terminal is further provided with an auxiliary fixing part integrated with the body, and the bottom wall of the receiving part is further provided with an insertion hole through which the auxiliary fixing part passes. A second gap is formed between the auxiliary fixing part and the insertion hole, and the insertion hole is connected to the limiting hole.

[0007] Based on technical solution two, there is also technical solution three. In technical solution three and its related embodiments, the auxiliary fixing part does not extend out of the bottom wall.

[0008] Based on technical solution three, there is also technical solution four. In technical solution four and its related embodiments, an adhesive potting groove is formed on the outer side of the bottom wall of the accommodating member, which is connected to both the through hole and the insertion hole.

[0009] Based on technical solution four, there is also technical solution five. In technical solution five and its related embodiments, the accommodating component includes a base and a cover. The through hole, the limiting hole and the insertion hole are all provided on the base. The cover is sleeved outside the relay body and the base. The side wall of the cover and the bottom wall of the base form the potting groove.

[0010] Based on technical solution four, there is also technical solution six. In a related embodiment of technical solution six, the outer side of the bottom wall of the receiving component is provided with a first glue groove that communicates with the through hole and a second glue groove that communicates with the insertion hole. The openings of the first glue groove and the second glue groove are both opened on the bottom wall of the glue filling groove.

[0011] Based on technical solution six, there is also technical solution seven. In technical solution seven and its related embodiments, the surface of the joint is provided with a rough surface, and the rough surface is at least partially located in the first glue groove and the through hole.

[0012] Based on technical solution seven, technical solution eight is also provided. In technical solution eight and its related embodiments, the rough surface is provided on both sides of the joint in the thickness direction.

[0013] Based on technical solution eight, technical solution nine is also provided. In technical solution nine and its related embodiments, the rough surface is provided with a plurality of protrusions spaced apart from each other; the intervals between the protrusions are connected to form a guide channel, and the guide channel is connected to the first glue groove and the limiting hole.

[0014] Based on technical solution one, there is also technical solution ten. In technical solution ten and its related embodiments, the joint and the through hole are limited and fitted in a direction perpendicular to the length direction of the joint.

[0015] Based on technical solution ten, technical solution eleven is also provided. In technical solution eleven and its related embodiments, at least one first gap is formed between the two sides of the joint in the thickness direction and the through hole, or, at least one hole wall of the through hole for limiting the fit with the joint is provided with a notch, the notch extends along the extension direction of the through hole and at least constitutes part of the first gap, and divides the hole wall into at least two parts.

[0016] Based on technical solution six, technical solution twelve is also provided. In technical solution twelve and its related embodiments, at least one first groove is provided on both sides of the portion of the joint located in the through hole and the first glue groove in the width direction.

[0017] Based on technical solution 12, there is also technical solution 13. In technical solution 13 and its related embodiments, the first groove extends along the thickness direction of the joint.

[0018] Based on technical solution 12, there is also technical solution 14. In technical solution 14 and its related embodiments, the first grooves on both sides of the joint are staggered along the length direction of the joint.

[0019] Based on technical solution two, there is also technical solution fifteen. In technical solution fifteen and its related embodiments, the auxiliary fixing part and the joint part are arranged along the width direction of the body, the auxiliary fixing part and the insertion hole are limited and matched along the thickness direction of the auxiliary fixing part, and the second gap is located on the side of the auxiliary fixing part facing the joint part.

[0020] Based on technical solution one, there is also technical solution sixteen. In technical solution sixteen and its related embodiments, at least one side of the body in the width direction is provided with at least one anti-retraction part for interference fit with the limiting hole and for restricting the body from exiting the limiting hole in the insertion direction.

[0021] Based on technical solution sixteen, there is also technical solution seventeen. In technical solution seventeen and its related embodiments, the anti-retraction part is provided with a guide surface that is inclined relative to the insertion direction so that the width of the anti-retraction part gradually decreases along the insertion direction.

[0022] Based on technical solution one, there is also technical solution eighteen. In technical solution eighteen and its related embodiments, the limiting hole is provided with a first limiting wall and a second limiting wall arranged along the thickness direction of the body. One of the first limiting wall and the second limiting wall has a protruding positioning protrusion for the body to abut against in order to position the body, and the other is in interference fit with the body.

[0023] Based on technical solution eighteen, there is also technical solution nineteen. In technical solution nineteen and its related embodiments, one of the first limiting wall and the second limiting wall opposite to the positioning protrusion is provided with a limiting protrusion.

[0024] Based on technical solution nineteen, there is also technical solution twenty. In technical solution twenty and its related embodiments, the end of the positioning protrusion and the limiting protrusion away from the through hole is provided with a first guide surface that is inclined relative to the insertion direction of the pin terminal.

[0025] Based on technical solution eighteen, there is also technical solution twenty-one. In technical solution twenty-one and its related embodiments, the side of the body away from the positioning protrusion is provided with at least one limiting rib that abuts against the first limiting wall and / or the second limiting wall.

[0026] Based on technical solution 21, there is also technical solution 22. In technical solution 22 and its related embodiments, the end of the limiting rib near the through hole is provided with a second guide surface that is inclined relative to the insertion direction of the pin terminal.

[0027] As can be seen from the above description of the present invention and its preferred embodiments, compared with the prior art, the technical solution of the present invention and its preferred embodiments have the following beneficial effects due to the adoption of the following technical means:

[0028] In technical solution one and its preferred embodiments, the accommodating member has a limiting hole inside that mates with the body, and the bottom wall of the accommodating member has a through hole for the connecting portion to pass through. Therefore, the limiting hole and the through hole can respectively limit the body and the connecting portion to a certain extent to achieve the limiting of the pin terminal. For example, the limiting hole can limit the body along the width direction of the pin terminal, and the through hole can limit the pin terminal along the thickness direction of the pin terminal. The two cooperate to achieve the limiting of the pin terminal. Alternatively, the limiting hole can be interference-fitted with the body to achieve the limiting of the pin terminal. Therefore, the "fitting" here includes both local position interference fit and limiting fit or gap. In this solution, since a first gap is formed between the joint and the through hole, when filling the adhesive, the adhesive can gradually enter the limiting hole through the first gap based on the siphon effect, and finally fill the gap between the first gap, the gap between the wall of the through hole and the outer wall of the joint, and the gap between the wall of the limiting hole and the outer wall of the body. This allows the part of the joint inserted into the through hole and the part of the body inserted into the limiting hole to be fixed and sealed with the receiving part by the cured adhesive, achieving reliable stability of the pin terminal structure. Compared with the prior art, this solution only requires one dispensing and drying process, resulting in high production efficiency and less likelihood of adhesive bubbles, thus reducing the product defect rate.

[0029] In technical solution two and its preferred embodiments, the pin terminal is further provided with an auxiliary fixing part integrated with the body, and the bottom wall of the receiving component is provided with a socket for the auxiliary fixing part to be inserted. This allows both ends of the pin terminal to form a certain degree of fit with the receiving component. Therefore, in this solution, even if a first gap is formed between the joint and the through hole, and a second gap is formed between the auxiliary fixing part and the socket, the portion of the pin terminal penetrating the receiving component will remain in a stable state before the adhesive is filled due to the limitation of the auxiliary fixing part. When filling the adhesive, the adhesive can also gradually enter the socket based on the siphon effect to fill the second gap, increasing the probability that each position of the body can contact the adhesive. Furthermore, both the auxiliary fixing part and the joint are fixed to the receiving component through the cured adhesive, thereby making the pin terminal as a whole form a good bond strength with the receiving component, and the pin terminal structure is stable and reliable. Since both the socket and the through hole are located on the bottom wall, the dispensing can be completed in the same process without adjusting the posture of the base before dispensing, making the operation simpler and the production efficiency higher.

[0030] In technical solution three and its preferred embodiments, the auxiliary fixing part does not extend out of the bottom wall, thus avoiding interference with the relay when it is connected to the external electrical system and ensuring insulation.

[0031] In the fourth technical solution and its preferred embodiment, an adhesive potting groove is formed on the outer side of the bottom wall of the receiving component, which is connected to both the through hole and the insertion hole. When applying adhesive, it is only necessary to apply adhesive in the adhesive potting groove. After the adhesive flows into the adhesive potting groove, it will flow into the first gap and the second gap due to the siphon effect. Therefore, it is not necessary to apply adhesive to the joint and the auxiliary fixing part separately, and the adhesive application process is simpler.

[0032] In technical solution five and its preferred embodiments, the receiving component includes a base and a cover. The through hole, the limiting hole and the insertion hole are all provided on the base. The cover is sleeved on the outside of the relay body and the base. The side wall of the cover and the bottom surface of the base form a potting groove, which is more conducive to the dispensing operation and can also achieve the sealing between the base and the cover.

[0033] In technical solution six and its preferred embodiments, the outer side of the bottom wall of the receiving component is provided with a first glue groove communicating with the through hole and a second glue groove communicating with the insertion hole. The openings of the first glue groove and the second glue groove are both opened on the bottom wall of the glue potting groove. The provision of the first glue groove and the second glue groove can further increase the glue capacity at the through hole and the insertion hole, thereby increasing the glue dispensing amount near the joint and the auxiliary fixing part, and improving the bonding strength between the pin terminal and the receiving component.

[0034] In the seventh technical solution and its preferred embodiment, the surface of the joint is provided with a rough surface, which is at least partially located in the first adhesive groove and the through hole. This can increase the contact area between the adhesive and the joint, thereby improving the bonding strength between the joint and the receiving member. The adhesive layer cured by the adhesive is thick, which can improve the peel strength of the adhesive layer.

[0035] In technical solution eight and its preferred embodiment, the thickness direction of the joint is also the thickness direction of the pin terminal. Rough surfaces are provided on both sides of the thickness direction of the joint. Compared with the rough surfaces being provided on both sides of the width direction of the joint, the contact area between the adhesive and the joint can be further increased, thereby improving the bonding strength between the joint and the receiving component.

[0036] In technical solution nine and its preferred embodiments, the rough surface is provided with a plurality of protrusions spaced apart from each other; the gaps between the protrusions are connected to form a guide channel, which connects the first glue tank and the limiting hole. The guide channel can guide the glue liquid from the glue tank through the first glue tank and the through hole to the limiting hole. Therefore, the glue liquid can flow into the through hole and the limiting hole through the guide channel and fill the space between the joint and the through hole and between the body and the limiting hole, thereby increasing the connection area between the joint and the through hole, and between the body and the limiting hole, thus enhancing the connection strength. The glue liquid forms a continuous glue layer through the guide channel, and after curing, it forms an integral anchoring structure, making the connection between the pin terminal and the housing more secure. In addition, during the welding and cooling process of the pin terminal and the external electrical connection, the stress can compress the glue in the guide channel and prevent it from easily detaching. The glue and the pin terminal form a stable anchoring effect, making it difficult for the glue between the housing and the pin terminal to detach from the pin terminal, thereby improving the long-term fit stability between the pin terminal and the housing. The raised sections are interconnected to form flow channels. The raised sections increase the surface roughness of the connection, increasing the contact area between the adhesive and the pins, thus improving adhesive adhesion. As physical barriers, the raised sections, after curing, form a "barb" structure with the adhesive layer, enhancing its peel strength and making it less prone to peeling during subsequent high-temperature soldering and cooling processes. Furthermore, the spacing between the raised sections creates multi-directional adhesive diffusion paths, guiding the adhesive to flow preferentially along these spacings. Even if one spacing is blocked by impurities, the adhesive can still fill through other spacings, preventing overflow or uneven filling and improving sealing reliability. The sidewalls of the raised sections directly serve as part of the flow channel walls, seamlessly integrating the raised sections with the flow channel structure. Compared to separate designs, this is more effective in preventing adhesive layer detachment due to vibration or thermal stress. The relative positions of the raised sections with the walls of the through-holes and limiting holes form micro-gap channels, allowing adhesive penetration while limiting excessive overflow, achieving a balance between filling accuracy and efficiency.

[0037] In technical solution ten and its preferred embodiment, the length direction of the joint is also the length direction of the pin terminal. The joint and the through hole are limited and matched in a direction perpendicular to the length direction of the joint, which ensures the stability of the structure after the pin terminal and the receiving part are inserted.

[0038] In technical solution eleven and its preferred embodiments, when at least one first gap is formed between the two sides of the joint in the thickness direction and the through hole, compared to when the first gap is located on both sides in the width direction of the joint, the contact area between the adhesive and the joint is larger, and the bonding strength between the joint and the receiving member is greater; when at least one hole wall of the through hole for limiting the fit with the joint is provided with a notch, and the notch extends along the extension direction of the through hole and at least forms part of the first gap, dividing the hole wall into at least two parts, the notch allows the adhesive to flow into the through hole and accommodate the adhesive, thus improving the bonding strength and sealing strength of the pin terminal. During the filling process, the adhesive can gradually enter the through hole based on the siphon effect to fill the notch, thereby making the surface of the pin terminal and the part inserted into the through hole fixed to the housing through the cured adhesive. The pin terminal structure is stable and reliable. Since the housing is generally made of plastic, during the injection molding process, the molten plastic generates internal stress due to volume shrinkage when it cools. The notch can provide a buffer space for material shrinkage, allowing the housing to shrink in a directional manner during cooling, avoiding deformation or cracking due to stress concentration. It also prevents the hole wall of the through hole used for limiting the pin terminal from being unable to form a reliable positioning and limiting function due to excessive deformation.

[0039] In the 12th technical solution and its preferred embodiment, the width direction of the joint is also the width direction of the pin terminal. At least one first groove is provided on both sides of the width direction of the part of the joint located in the through hole, the first glue groove and the potting groove. The setting of the first groove further increases the contact area between the joint and the glue. On the other hand, it can prevent the glue from crawling along the pin terminal when the first glue groove is full, which would cause poor soldering when the joint is connected to the circuit board.

[0040] In technical solution thirteen and its preferred embodiment, the first groove extends along the thickness direction of the joint, which is more conducive to production and processing.

[0041] In the fourteenth technical solution and its preferred embodiment, the first grooves on both sides of the joint are staggered along the length direction of the joint, which avoids the narrowing of the joint width and the reduction of the current carrying area caused by the first grooves on both sides of the joint width direction being symmetrical to each other. This technical solution can ensure that even if multiple first grooves are provided in the joint, the change in the current carrying area will not be too large.

[0042] In technical solution 15 and its preferred embodiment, the auxiliary fixing part and the connecting part are arranged along the width direction of the body, the auxiliary fixing part and the insertion hole are limited and matched along the thickness direction of the auxiliary fixing, and the second gap is located on the side of the auxiliary fixing part facing the connecting part. This not only reduces the difficulty of inserting the pin terminal and the receiving part, but also the fact that the second gap is located on the side of the auxiliary fixing part facing the connecting part is conducive to the flow of adhesive through the second gap to the middle of the connecting part and the auxiliary fixing part, so that the pin terminal is fixed at multiple points in its width direction, which is more conducive to increasing the bonding strength between the pin terminal and the receiving part.

[0043] In the sixteenth technical solution and its preferred embodiment, at least one side of the body width direction is provided with at least one anti-retraction part for interference fit with the limiting hole and restricting the body from exiting the limiting hole in the insertion direction, which further ensures the stability of the structure after the pin terminal is inserted with the receiving part, which is beneficial to ensure the stability of the pin terminal before dispensing and is beneficial to the subsequent dispensing operation.

[0044] In the seventeenth technical solution and its preferred embodiment, the anti-reverse part is provided with a guide surface that is inclined relative to the insertion direction. The width of the anti-reverse part gradually decreases along the insertion direction. The setting of the guide surface can reduce the resistance when the body is inserted into the limiting hole, making the relay assembly more convenient and achieving a good anti-reverse effect.

[0045] In the eighteenth technical solution and its preferred embodiment, the limiting hole is provided with a first limiting wall and a second limiting wall arranged along the thickness direction of the body. One of the first limiting wall and the second limiting wall has a protruding positioning protrusion for the body to abut against to position the body. The other wall is in interference fit with the body, so that the position of the body can be accurately positioned. Especially when the body is provided with corresponding contacts, the accuracy and stability of the contact position can be guaranteed. In addition, a gap is also formed between the body and the first limiting wall and / or the second limiting wall. This gap allows the adhesive to flow in, so that the adhesive gradually flows from the through hole and the insertion hole into the limiting hole and fills the gap between the outer wall of the body and the hole wall of the limiting hole. This makes the body and the receiving component also form a sealed connection, further increasing the connection strength between the pin terminal and the receiving component. Moreover, the interference fit between the limiting hole and the body is achieved by the positioning protrusion abutting against the body. Compared with the solution without the positioning protrusion, it is more conducive to the accuracy control during the interference fit.

[0046] In the nineteenth technical solution and its preferred embodiment, one of the first limiting wall and the second limiting wall opposite to the positioning protrusion is provided with a limiting protrusion, which further increases the gap between the body and the first limiting wall and the second limiting wall, thereby increasing the amount of adhesive filling in the limiting hole, further increasing the bonding strength of the pin terminal and the receiving part, and through the interference fit between the limiting protrusion and the body, it is more conducive to the precision control during interference fit compared with the solution without the limiting protrusion.

[0047] In the 20th technical solution and its preferred embodiment, the end of the limiting protrusion away from the through hole is provided with a first guide surface that is inclined relative to the insertion direction of the pin terminal, which can reduce the resistance when the body is inserted into the limiting hole, and make the assembly of the relay more convenient.

[0048] In technical solution 21 and its preferred embodiments, since the positioning protrusion and the limiting protrusion are usually made of plastic, during the process of inserting the pin terminal into the limiting hole, the positioning protrusion and the limiting protrusion made of plastic are prone to scratching and deformation, so that the limiting hole and the body cannot form a complete interference fit. In this technical solution, the body is provided with at least one limiting rib that abuts against the first limiting wall and / or the second limiting wall. Since the limiting rib is made of metal, it can compensate for the adverse effects on the interference fit between the limiting hole and the body when the positioning protrusion and the limiting protrusion are scratched or deformed.

[0049] In technical solution twenty-one and its preferred embodiments, the end of the limiting rib near the through hole is provided with a second guide surface that is inclined relative to the insertion direction of the pin terminal, which can reduce the resistance when the body is inserted into the limiting hole, and make the assembly of the relay more convenient. Attached Figure Description

[0050] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 This is a schematic diagram of a relay according to an embodiment of this application;

[0052] Figure 2 This is a side view of the relay concealed housing according to an embodiment of this application;

[0053] Figure 3 This is a schematic diagram of the base according to an embodiment of this application;

[0054] Figure 4 for Figure 3 An enlarged schematic diagram of part A;

[0055] Figure 5 This is a top view of the relay in an embodiment of this application;

[0056] Figure 6 for Figure 2 Sectional view along the AA direction;

[0057] Figure 7 for Figure 6 An enlarged schematic diagram of part B;

[0058] Figure 8 for Figure 2 Sectional view in the BB direction;

[0059] Figure 9 for Figure 2 Sectional view in the CC direction;

[0060] Figure 10 for Figure 5 Sectional view in the DD direction;

[0061] Figure 11 This is a schematic diagram of the pin terminals in an embodiment of this application;

[0062] Figure 12 for Figure 11 An enlarged schematic diagram of part C.

[0063] Explanation of key figure labels:

[0064] 100; 10; 11; 11; 111; 1111; 112; 113; 114; 115; 12; 12; 121; 122; 123; 124; 125; 126; 13; 14; 20; 31; 32; 33; 34; 40; 41; 411; 412; 413; 414; 411; 42; 42; 421; 4211; 422; 423; 43; 42; 421; 4211; 422; 423; 43; 44; 45; 46; 47; 48; 49; 40; 40; 41; 42; 42; 42; 42; 42; 42; 42; 42; 42; 42; 42; 42; 42; 42; 42; 42; 42; 42; 42; 42; 42; 42; 42; 43; 42; 43; 44; 45; 42 ...15; 16; 17; 18; 19; 10; 10; 19; 10; 19; 19; 19; 19; 19; 19; 1 Detailed Implementation

[0065] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0066] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.

[0067] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing this utility model and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of this utility model.

[0068] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.

[0069] In the claims, description and accompanying drawings of this utility model, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."

[0070] In the claims and the description other than the embodiments, the terms "X-axis direction," "Y-axis direction," and "Z-axis direction" only refer to a feature having one of the aforementioned directions being perpendicular to a feature having another direction, and do not require that they be implemented according to the "X-axis direction," "Y-axis direction," and "Z-axis direction" described in the embodiments. In the embodiments, the X-axis direction is perpendicular to both the Y-axis direction and the Z-axis direction. The X-axis direction can be divided into left and right, the Y-axis direction into front and back, and the Z-axis direction into up and down.

[0071] See Figure 1-2 , Figure 1 A relay is shown. Figure 2 A schematic diagram of a relay concealed housing is shown. The relay includes a housing 100 and a relay body. The housing 100 includes a base 10 and a housing 20. The housing 20 covers the base 10 and forms a cavity for housing the relay body. See also Figure 2 , Figure 2The diagram shows a relay with its concealed housing 20. The relay body has pin terminals 40 and includes a magnetic circuit portion 31, a driving portion 32, and a contact portion. The magnetic circuit portion 31, driving portion 32, and contact portion are all prior art. The magnetic circuit portion 31 includes a coil assembly and an armature assembly. The coil assembly includes a coil frame, a coil winding, an iron core, signal terminals, and two yokes. The coil frame is fixedly mounted on the base 10 and includes a winding shaft extending along the Z-axis and retaining walls located at both ends of the winding shaft. The coil winding is wound around the winding shaft, and the iron core passes through the winding shaft. The armature assembly is fixed to two yokes at both ends, forming two magnetic drive ends arranged along the Z-axis. The armature assembly rotates relative to the coil assembly about a rotation axis extending along the X-axis. The armature assembly includes a permanent magnet, two armatures, and an insulating component. The two armatures are fixed to the two magnetic poles of the permanent magnet. Each armature has a contact portion suitable for engaging with the magnetic drive ends. The insulating component encloses the two armatures and the permanent magnet into a single unit. In the magnetically held state, each armature has a contact portion that engages with its corresponding magnetic drive end to form a closed magnetic circuit passing through the two magnetic drive ends. The pushing portion 32 is connected to the insulating component of the armature assembly and extends along the Y-axis. The contact portion includes a moving contact 33 connected to the pushing portion 32 and two stationary contacts 34 fixed relative to the coil assembly. The moving contact 33 is located between the two stationary contacts 34 along the Y-axis. The coil assembly receives external pulse electrical signals and generates magnetic excitation upon energization to drive the armature assembly. The armature assembly, through the pushing part 32, drives the moving contact 33 to move, thereby closing or opening the moving contact 33 with different stationary contacts 34. In this embodiment, both the moving contact 33 and the stationary contact 34 are provided with pin terminals 40, that is, the relay body is provided with pin terminals 40. It should be understood that the above-described coil assembly and armature assembly are only an example, and are not limited to the above forms; other forms are also possible. In addition, the pin terminals can also be part of the coil terminals or auxiliary switch terminals.

[0072] The structure of the base 10 will be introduced below.

[0073] See Figure 3-4 , Figure 3 A schematic diagram of the base 10 is shown. Figure 4 It shows Figure 3The enlarged schematic diagram of part A shows that the base 10 has a bottom wall 11 and a first limiting seat 12, a second limiting seat 13 and a mounting part 14 arranged along the Y-axis on the bottom wall 11. The first limiting seat 12 corresponds to the position of the contact part, the second limiting seat 13 corresponds to the position of the armature assembly and allows the armature assembly to be rotated and installed, and the mounting part 14 corresponds to the position of the coil assembly. In this embodiment, the structure of the second limiting seat 13 and the mounting part 14 is consistent with the prior art. The pin terminal 40 passes through the first limiting seat 12 and the bottom wall 11. The following will mainly introduce the improved structure of the first limiting seat 12 and the bottom wall 11 part corresponding to the first limiting seat 12.

[0074] See Figure 5 , Figure 5 A top view of the relay is shown. The bottom wall 11 of the base 10 has three through holes 111 and three sockets 112. Each through hole 111 and one socket 112 form a group. In other embodiments, the number of through holes 111 and the number of sockets 112 can be set according to the number of pin terminals 40. Each through hole 111 can also form a group with more than one socket 112. The through hole 111 is used for the joint 41 mentioned below to pass through, and the insertion hole 112 is used for the auxiliary fixing part 43 mentioned below to pass through. That is, the bottom wall 11 of the receiving member 100 is provided with a through hole 111 for the joint 41 to pass through, and the bottom wall 11 of the receiving member 100 is also provided with an insertion hole 112 for the auxiliary fixing part 43 to pass through. Both the insertion hole 112 and the through hole 111 are provided on the base 10. The through holes 111 and the insertion holes 112 in the same group are arranged at intervals along the X-axis, and the through holes 111 in different groups are staggered along the X-axis to increase the electrical distance and avoid the joint 41. The distance is too close to facilitate connection with the outside. The bottom wall 11 of the accommodating member 100 is formed with a glue-filling groove 113 that communicates with both the through hole 111 and the insertion hole 112. In this embodiment, the glue-filling groove 113 is formed by the side wall of the cover 20 and the bottom surface of the base 10. Specifically, the bottom surface of the base 10 is provided with a groove, and the side wall of the cover 20 surrounds the outer periphery of the groove and cooperates with the groove to form the glue-filling groove 113. That is, the side wall of the cover 20 and the bottom wall of the base 10 form the glue-filling groove 113. It should be understood that the outside of the bottom wall 11 referred to in this embodiment refers to the bottom surface of the base 10. The bottom wall 11 of the receiving member 100 is provided with a first glue groove 114 that communicates with the through hole 111 and a second glue groove 115 that communicates with the insertion hole 112. In this embodiment, the area of ​​the groove opening of the first glue groove 114 and the second glue groove 115 is larger than the area of ​​the bottom of the groove. The groove openings of the first glue groove 114 and the second glue groove 115 are both opened on the bottom wall of the glue filling groove 113.

[0075] See Figure 6 , Figure 6A cross-sectional view is shown where the pin terminal 40 is inserted into the receiving member 100. The first limiting seat 12 of the base 10 is provided with a limiting hole 121 that communicates with both the through hole 111 and the insertion hole 112. The limiting hole 121 is used to mate with the body 42 described below. That is, the receiving member 100 has a limiting hole 121 inside that mates with the body 42. In this embodiment, the limiting hole 121 and the body 42 are interference-fitted. See also Figure 3-4 The limiting hole 121 is provided with a first limiting wall 122 and a second limiting wall 123 arranged along the thickness direction (Y-axis direction) of the body 42. One of the first limiting wall 122 and the second limiting wall 123 protrudes and is provided with a positioning protrusion 124 for the body 42 to abut against to position the body 42. The other one is in interference contact with the body 42. One of the first limiting wall 122 and the second limiting wall 123 opposite to the positioning protrusion 124 is provided with a limiting protrusion 125. In this embodiment, the positioning protrusion 124 is provided on the first limiting wall 122 and there are two of them. The limiting protrusion 125 is provided on the second limiting wall 123 and there are two of them. The end of the positioning protrusion 124 and the limiting protrusion 125 away from the through hole 111 is provided with a first guide surface 126 that is inclined relative to the insertion direction (Z-axis direction) of the pin terminal 40.

[0076] See Figure 6 The pin terminal 40 has a connecting portion 41 that penetrates the receiving member 100 and is used for electrical connection with the outside. The pin terminal 40 also has a body 42 integrally connected to the connecting portion 41 and an auxiliary fixing portion 43 integrally connected to the body 42. Exemplarily, the body 42 is flat and has a width direction (i.e., the X-axis direction), a thickness direction (i.e., the Y-axis direction), and a length direction (i.e., the Z-axis direction). The connecting portion 41 and the auxiliary fixing portion 43 also have width, thickness, and length directions corresponding to the width, thickness, and length directions of the body 42, respectively. The length direction of the body 42 is consistent with or substantially consistent with the extension direction of the limiting hole 121. The width of the body 42 is greater than the width of the connecting portion 41 and the auxiliary fixing portion 43. The connecting portion 41 and the auxiliary fixing portion 43 are arranged along the width direction of the body 42 and are located at both ends of the body 42, respectively. In this embodiment, the body 42 is inserted into and interference-fitted with the limiting hole 121. At least one side of the body 42 in the width direction protrudes to provide at least one anti-retraction portion 421 for interference-fitting with the limiting hole 121 and restricting the body 42 from exiting the limiting hole 121 in the insertion direction. The anti-retraction portion 421 is provided with a guide surface 4211 that is inclined relative to the insertion direction. The width of the anti-retraction portion 421 gradually decreases in the insertion direction. Figure 6 In the middle, anti-recession portions 421 protrude from both sides of the main body 42 in the width direction. See also Figure 8 , Figure 8The diagram shows the body 42 of the pin terminal 40 inserted into the limiting hole 121. The body 42 is provided with at least one limiting rib 422 on the side opposite to the positioning protrusion 124, which abuts against the first limiting wall 122 or the second limiting wall 123. Figure 8 In the middle, the main body 42 has two limiting ribs 422 on the side opposite to the positioning protrusion 124, which abut against the second limiting wall 123. See also Figure 11 , Figure 11 A schematic diagram of the pin terminal 40 is shown. The limiting rib 422 has a second guide surface 423 that is inclined relative to the insertion direction (Z-axis direction) of the pin terminal 40 at one end (bottom end) near the through hole 111.

[0077] See Figure 5 and Figure 9 , Figure 9 A cross-sectional view of the pin terminal 40 inserted into the receiving member 100 is shown. The joint portion 41 penetrates the through hole 111 and forms a first gap 01 between the joint portion 41 and the through hole 111. The joint portion 41 and the through hole 111 are mutually constrained in a direction perpendicular to the length direction of the joint portion 41. Specifically, the constrained fit is formed in both the X-axis direction and the Y-axis direction. At least one first gap 01 is formed between the two sides of the joint portion 41 in the thickness direction and the through hole 111. Alternatively, at least one hole wall of the through hole 111 for constrained fit with the joint portion 41 is provided with a notch 1111. The notch 1111 extends along the extension direction of the through hole 111 and at least forms part of the first gap 01, and divides the hole wall into at least two parts. Figure 9 In the middle, two first gaps 01 are formed between the two sides of the joint 41 in the thickness direction and the through hole 111, respectively. Figure 9 In the through hole 111, two opposite holes along the Y-axis for limiting and fitting with the joint 41 are respectively provided with two notches 1111 arranged along the X-axis. It should be understood that the first gap 01 can also be formed on the through groove extending along the axis of the through hole in the joint 41. See Figure 11 The joint 41 has a rough surface 411 on its surface. In this embodiment, rough surfaces 411 are provided on both sides of the joint 41 in the thickness direction. See [reference needed]. Figure 10 , Figure 10 A schematic diagram shows the pin terminal 40 inserted into the receiving member 100. The rough surface 411 is at least partially located within the first glue groove 114, the through hole 111, and the glue potting groove 113. See [reference needed] Figure 12 , Figure 12An enlarged schematic diagram of the joint 41 is shown. The rough surface 411 is provided with a plurality of spaced-apart protrusions 413. The gaps between the protrusions 413 connect to form a guide channel 414, which connects the first glue groove 114 and the through hole 111. In this embodiment, each protrusion 411 is spaced apart and connected to form a plurality of intersecting guide branches, which connect to form the guide channel 414. In this embodiment, the portions of the joint located within the through hole 111, the first glue groove 114, and the glue filling groove 113 are all provided with corresponding protrusions 413. See also Figure 6 and Figure 11 The portion of the joint 41 located within the through hole 111 and the first adhesive groove 114 has at least one first groove 412 on each side in the width direction, and the first groove 412 extends along the thickness direction of the joint 41. The first grooves 412 on both sides of the joint 41 are staggered along the length direction of the joint 41. In this embodiment, at least two first grooves 412 arranged along the length direction of the joint 41 are provided on each side in the width direction of the joint 41.

[0078] See Figure 6-7 and Figure 9 , Figure 7 It shows Figure 6 An enlarged diagram of part B. Figure 9 A cross-sectional view is shown of the pin terminal 40 being inserted into the receiving member 100. A second gap 02 is formed between the auxiliary fixing part 43 and the insertion hole 112 and does not protrude from the bottom wall 11. The auxiliary fixing part 43 and the insertion hole 112 are limited and fitted along the thickness direction (Y-axis direction) of the auxiliary fixing part 43, and the second gap 02 is located on the side of the auxiliary fixing part 43 facing the joint part 41.

[0079] In this embodiment, the bottom wall 11 of the receiving member 100 is provided with a through hole 111 through which the joining portion 41 passes. Therefore, the limiting hole 121 and the through hole 111 can respectively limit the body 42 and the joining portion 41 to a certain extent to achieve the limiting of the pin terminal 40. For example, the limiting hole 121 can limit the body 42 along the width direction of the pin terminal 40, and the through hole 111 can limit the pin terminal 40 along the thickness direction of the pin terminal 40. The two cooperate to achieve the limiting of the pin terminal 40. Alternatively, the limiting hole 121 can be interference-fitted with the body 42 to achieve the limiting of the pin terminal 40. Therefore, the "cooperation" here includes both local position interference fit and limiting fit or clearance fit. Therefore, in this solution, since the joining portion A first gap 01 is formed between 41 and the through hole 111. Therefore, when filling the adhesive, the adhesive can gradually enter the limiting hole 121 through the first gap 01 based on the siphon effect, and finally fill the gap between the first gap 01, the gap between the hole wall of the through hole 111 and the outer wall of the joint 41, and the gap between the limiting hole 121 and the outer wall of the body 42. This allows the part of the joint 41 inserted into the through hole 111 and the part of the body 42 inserted into the limiting hole 121 to be fixed and sealed with the receiving member 100 by the cured adhesive, so as to achieve reliable stability of the pin terminal 40 structure. Moreover, compared with the prior art, this solution only needs to go through one dispensing and drying process, which is simpler, has higher production efficiency, and is less likely to generate adhesive bubbles, thus reducing the product defect rate.

[0080] In this embodiment, the pin terminal 40 is also provided with an auxiliary fixing part 43 integrated with the body 42. When filling with adhesive, the adhesive can gradually enter the socket 112 based on the siphon effect to fill the second gap 02 and the gap between the limiting hole 121 and the body 42, thereby increasing the probability that each position of the body 42 can contact the adhesive. Furthermore, the auxiliary fixing part 43 and the connecting part 41 are both fixed to the receiving member 100 by the cured adhesive, thereby making the pin terminal 40 and the receiving member 100 form a good bonding strength, and the structure of the pin terminal 40 is stable and reliable. The socket 112 and the through hole 111 are both located on the bottom wall 11, so the dispensing can be completed in the same process without adjusting the posture of the base 10 before dispensing, making the operation simpler and the production efficiency higher.

[0081] In this embodiment, the auxiliary fixing part 43 does not extend out of the bottom wall 11, thus avoiding interference with the relay when it is connected to the external power supply and ensuring insulation.

[0082] In this embodiment, an adhesive filling groove 113 is formed on the outer side of the bottom wall 11 of the accommodating member 100, which is connected to both the through hole 111 and the insertion hole 112. When applying adhesive, it is only necessary to apply adhesive in the adhesive filling groove 113. After the adhesive flows into the adhesive filling groove 113, it will flow into the first gap 01 and the second gap 02 due to the siphon effect. Therefore, it is not necessary to apply adhesive to the joint 41 and the auxiliary fixing part 43 separately, and the adhesive application process is simpler.

[0083] In this embodiment, the receiving component 100 includes a base 10 and a cover 20. The through hole 111, the limiting hole 121 and the insertion hole 112 are all provided on the base 10. The cover 20 is sleeved on the relay body and the base 10. The side wall of the cover 20 and the bottom surface of the base 10 form a potting groove 113, which is more conducive to the dispensing operation and can also achieve the sealing between the base 10 and the cover 20.

[0084] In this embodiment, the bottom wall 11 of the accommodating member 100 is provided with a first glue groove 114 communicating with the through hole 111 and a second glue groove 115 communicating with the insertion hole 112. The openings of the first glue groove 114 and the second glue groove 115 are both opened on the bottom wall of the glue potting tank 113. The arrangement of the first glue groove 114 and the second glue groove 115 can further increase the glue capacity at the through hole 111 and the insertion hole 112, thereby increasing the glue dispensing amount near the joint 41 and the auxiliary fixing part 43, and improving the bonding strength between the pin terminal 40 and the accommodating member 100.

[0085] In this embodiment, the surface of the joint 41 is provided with a rough surface 411. The rough surface 411 is at least partially located in the first adhesive groove 114 and the through hole 111, which can increase the contact area between the adhesive and the joint 41, thereby improving the bonding strength between the joint 41 and the receiving member 100. The adhesive layer cured by the adhesive is thick, which can improve the peel strength of the adhesive layer.

[0086] In this embodiment, the rough surface 411 is provided with a plurality of spaced protrusions 413; the gaps between the protrusions 413 form a guide channel 414, which connects the first glue tank 114 and the limiting hole 121. The guide channel 414 can guide the glue from the glue filling tank 113 through the first glue tank 114 and the through hole 111 into the limiting hole 121. Therefore, the glue can flow into the through hole 111 and the limiting hole 121 through the guide channel 414 and fill the space between the joint 41 and the through hole 111 and between the body 42 and the limiting hole 121, thereby increasing the connection area between the joint 41 and the through hole 111, and in the... The connection area between the body 42 and the limiting hole 121 is increased, enhancing the connection strength. The adhesive forms a continuous adhesive layer through the guide channel 414, and after curing, it forms an integral anchoring structure, making the connection between the pin terminal 40 and the housing 100 more secure. In addition, during the welding and cooling process of the pin terminal 40 and the external electrical connection, the stress can compress the adhesive within the guide channel 414, making it less likely to detach. A stable anchoring effect is formed between the adhesive and the pin terminal 40, making it less likely for the adhesive between the housing 100 and the pin terminal 40 to detach from the pin terminal 40, thereby improving the long-term fit stability between the pin terminal 40 and the housing 100. The gaps between the protrusions 413 form a flow channel 414. The protrusions 413 increase the surface roughness of the connection part, thereby increasing the contact area between the adhesive and the pin terminal 40 and improving the adhesion of the adhesive. As a physical barrier, the protrusions 413 form a "barb" structure with the adhesive layer after curing, which improves the peel strength of the adhesive layer and makes it less likely to peel off during the subsequent high-temperature welding and cooling process of the pin terminal 40. In addition, the gaps between the protrusions 413 form a multi-directional adhesive diffusion path. The protrusions 413 guide the adhesive to flow preferentially along the gaps between the protrusions 413. Even if a gap is blocked by impurities, the adhesive can still be filled through other gaps, avoiding adhesive overflow or uneven filling and improving sealing reliability. The sidewall of the protrusion 413 directly serves as part of the wall of the guide channel 414. The protrusion 413 and the guide channel 414 are seamlessly integrated. Compared with the separate design of the protrusion 413 and the guide channel 414, this design is more conducive to preventing the adhesive layer from falling off due to vibration or thermal stress. Furthermore, the relative position of the protrusion 413 with the hole walls of the through hole 111 and the limiting hole 121 forms a micro-gap channel, which allows the adhesive to penetrate while limiting the overflow of excessive adhesive, thus achieving a balance between filling accuracy and efficiency.

[0087] In this embodiment, the thickness direction of the joint 41 is also the thickness direction of the pin terminal 40. Rough surfaces 411 are provided on both sides of the thickness direction of the joint 41. Compared with the rough surfaces 411 being provided on both sides of the width direction of the joint 41, the contact area between the adhesive and the joint 41 can be further increased, thereby improving the bonding strength between the joint 41 and the receiving member 100.

[0088] In this embodiment, the length direction of the joint 41 is also the length direction of the pin terminal 40. The joint 41 and the through hole 111 are limited and matched in a direction perpendicular to the length direction of the joint 41, which ensures the stability of the structure after the pin terminal 40 and the receiving member 100 are inserted.

[0089] In this embodiment, when at least one first gap 01 is formed between the two sides of the joint portion 41 in the thickness direction and the through hole 111, the contact area between the adhesive and the joint portion 41 is larger than that between the two sides of the joint portion 41 in the width direction. Furthermore, since the two sides of the joint portion 41 in the thickness direction are respectively provided with rough surfaces 411, the adhesive has a larger contact area with the two sides of the joint portion 41 in the thickness direction, and the bonding strength between the joint portion 41 and the receiving member 100 is large. At least one hole wall of the through hole 111 for limiting engagement with the joint 41 is provided with a notch 1111. The notch 1111 extends along the extension direction of the through hole 111 and at least forms part of the first gap 01, dividing the hole wall into at least two parts. When the notch 1111 allows adhesive to flow into the through hole 111 and accommodates the adhesive, it is beneficial to improve the bonding strength and sealing strength of the pin terminal 40. When filling with adhesive, the adhesive can gradually enter the through hole 111 based on the siphon effect to fill the notch 1111, thereby making the surface of the pin terminal 40 and The portion inserted into the through hole 111 is fixed to the receiving element 100 by the cured adhesive. The structure of the pin terminal 40 is stable and reliable. Since the receiving element 100 is generally made of plastic, during the injection molding process, the molten plastic generates internal stress due to volume shrinkage when it cools. The notch 1111 can provide a buffer space for material shrinkage, allowing the receiving element 100 to shrink in a directional manner during cooling, avoiding deformation or cracking due to stress concentration. It also prevents the hole wall of the through hole 111 used for limiting the fit with the pin terminal 40 from being unable to form a reliable positioning and limiting function due to excessive deformation.

[0090] In this embodiment, the width direction of the joint 41 is also the width direction of the pin terminal 40. At least one first groove 412 is provided on both sides of the width direction of the part of the joint 41 located in the through hole 111, the first glue groove 114 and the glue filling groove 113. The setting of the first groove 412 further increases the contact area between the joint 41 and the glue. On the other hand, it can prevent the glue from crawling along the pin terminal 40 when the first glue groove 114 is full, which would cause poor soldering when the joint 41 is connected to the circuit board.

[0091] In this embodiment, the first groove 412 extends along the thickness direction of the joint 41, which is more conducive to production and processing.

[0092] In this embodiment, the first grooves 412 on both sides of the joint 41 are staggered along the length direction of the joint 41, which avoids the narrowing of the width of the joint 41 at this position and the reduction of the current carrying area when the first grooves 412 on both sides of the width direction of the joint 41 are symmetrical to each other. This technical solution can ensure that even if multiple first grooves 412 are provided in the joint 41, the change in the current carrying area will not be too large.

[0093] In this embodiment, since the joint 41 and the through hole 111 are limited and matched in a direction perpendicular to the length direction of the joint 41, if the auxiliary fixing part 43 is also limited and matched in a direction perpendicular to its length direction with the insertion hole 112, it will be more difficult to insert the pin terminal 40 into the receiving member 100. In this embodiment, the auxiliary fixing part 43 and the joint 41 are arranged in the width direction of the body 42, and the auxiliary fixing part 43 and the insertion hole 112 are limited and matched in the thickness direction of the auxiliary fixing. The second gap 02 is located on the side of the auxiliary fixing part 43 facing the joint 41. This not only reduces the difficulty of inserting the pin terminal 40 into the receiving member 100, but also the fact that the second gap 02 is located on the side of the auxiliary fixing part 43 facing the joint 41 is conducive to the flow of adhesive through the second gap 02 to the middle of the joint 41 and the auxiliary fixing part 43. This makes the pin terminal 40 fixed at multiple points in its width direction, which is more conducive to increasing the bonding strength between the pin terminal 40 and the receiving member 100.

[0094] In this embodiment, at least one side of the body 42 in the width direction is provided with at least one anti-retraction part 421 for interference fit with the limiting hole 121 and restricting the body 42 from exiting the limiting hole 121 in the insertion direction. This further ensures the stability of the structure after the pin terminal 40 is inserted into the receiving member 100, which is beneficial to ensuring the stability of the pin terminal 40 before dispensing and is beneficial to the subsequent dispensing operation.

[0095] In this embodiment, the anti-retraction part 421 is provided with a guide surface 4211 that is inclined relative to the insertion direction. The width of the anti-retraction part 421 gradually decreases along the insertion direction. The guide surface 4211 can reduce the resistance when the body 42 is inserted into the limiting hole 121, making the relay assembly more convenient and achieving a good anti-retraction effect.

[0096] In this embodiment, the limiting hole 121 is provided with a first limiting wall 122 and a second limiting wall 123 arranged along the thickness direction of the body 42. One of the first limiting wall 122 and the second limiting wall 123 has a protruding positioning protrusion 124 for the body 42 to abut against to position the body 42, and the other has an interference fit with the body 42, so that the position of the body 42 can be accurately positioned. Especially when the body 42 is provided with corresponding contacts, it can ensure the accuracy and stability of the contact position. In addition, it also makes the body 42 and the first limiting wall 122 and / or the second limiting wall 123 fit together. A gap is also formed between the three holes, which allows the adhesive to flow in. This allows the adhesive to gradually flow from the through hole 111 and the insertion hole 112 into the limiting hole 121 and fill the gap between the outer wall of the body 42 and the wall of the limiting hole 121. This makes the body 42 and the receiving member 100 form a sealed connection, further increasing the connection strength between the pin terminal 40 and the receiving member 100. Moreover, the positioning protrusion 124 abuts against the body 42 to achieve an interference fit between the limiting hole 121 and the body 42. Compared with the solution without the positioning protrusion 124, this is more conducive to the precision control during the interference fit.

[0097] In this embodiment, one of the first limiting wall 122 and the second limiting wall 123 opposite to the positioning protrusion 124 is provided with a limiting protrusion 125, which further increases the gap between the body 42 and the first limiting wall 122 and the second limiting wall 123, thereby increasing the amount of adhesive filling in the limiting hole 121, further increasing the bonding strength between the pin terminal 40 and the receiving member 100, and the limiting protrusion 125 is in interference fit with the body 42. Compared with the solution without the limiting protrusion 125, it is more conducive to the precision control during interference fit.

[0098] In this embodiment, the end of the limiting protrusion 125 away from the through hole 111 is provided with a first guide surface 126 that is inclined relative to the insertion direction of the pin terminal 40, which can reduce the resistance when the body 42 is inserted into the limiting hole 121, and make the assembly of the relay more convenient.

[0099] In this embodiment, since the positioning protrusion 124 and the limiting protrusion 125 are usually made of plastic, during the process of inserting the pin terminal 40 into the limiting hole 121, the positioning protrusion 124 and the limiting protrusion 125 made of plastic are prone to scratching and deformation, which makes it impossible to form a complete interference fit between the limiting hole 121 and the body 42. In this technical solution, the body 42 is provided with at least one limiting rib 422 that abuts against the first limiting wall 122 and / or the second limiting wall 123. Since the limiting rib 422 is made of metal, it can compensate for the adverse effects on the interference fit between the limiting hole 121 and the body 42 when the positioning protrusion 124 and the limiting protrusion 125 are scratched or deformed.

[0100] In this embodiment, the end of the limiting rib 422 near the through hole 111 is provided with a second guide surface 423 that is inclined relative to the insertion direction of the pin terminal 40, which can reduce the resistance when the body 42 is inserted into the limiting hole 121, making the assembly of the relay more convenient.

[0101] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.

Claims

1. A relay comprising a receiving member (100) and a relay body, the relay body having pin terminals (40), the pin terminals (40) having a connecting portion (41) penetrating the receiving member (100) and for electrical connection to an external source, characterized in that, The pin terminal (40) is provided with a body (42) integrated with the joint (41). The accommodating member (100) is provided with a limiting hole (121) that cooperates with the body (42). The bottom wall (11) of the accommodating member (100) is provided with a through hole (111) through which the joint (41) passes. The limiting hole (121) and the through hole (111) are connected. A first gap (01) is formed between the joint (41) and the through hole (111).

2. A relay as described in claim 1, characterized in that, The pin terminal (40) is also provided with an auxiliary fixing part (43) integrated with the body (42). The bottom wall (11) of the receiving member (100) is also provided with a socket (112) through which the auxiliary fixing part (43) passes. A second gap (02) is formed between the auxiliary fixing part (43) and the socket (112). The socket (112) is connected to the limiting hole (121).

3. A relay as described in claim 2, characterized in that, The auxiliary fixing part (43) does not extend beyond the bottom wall (11).

4. A relay as described in claim 3, characterized in that, The bottom wall (11) of the accommodating member (100) is also formed with a glue-filling groove (113) that is connected to both the through hole (111) and the insertion hole (112).

5. A relay as described in claim 4, characterized in that, The receiving component (100) includes a base (10) and a cover (20). The through hole (111), the limiting hole (121) and the insertion hole (112) are all provided on the base (10). The cover (20) is sleeved on the relay body and the base (10). The side wall of the cover (20) and the bottom wall of the base (10) enclose the glue-filling groove (113).

6. A relay as described in claim 4, characterized in that, The bottom wall (11) of the accommodating member (100) is provided with a first glue groove (114) communicating with the through hole (111) and a second glue groove (115) communicating with the insertion hole (112). The openings of the first glue groove (114) and the second glue groove (115) are both opened on the bottom wall (11) of the glue filling tank (113).

7. A relay as described in claim 6, characterized in that, The joint (41) has a rough surface (411) on its surface, and the rough surface (411) is at least partially located in the first adhesive groove (114) and the through hole (111).

8. A relay as described in claim 7, characterized in that, The joint (41) has rough surfaces (411) on both sides in the thickness direction.

9. A relay as described in claim 8, characterized in that, The rough surface (411) is provided with a plurality of protrusions (413) spaced apart from each other; the gaps between the protrusions (413) are connected to form a guide channel (414), and the guide channel (414) connects the first glue groove (114) and the limiting hole (121).

10. A relay as described in claim 1, characterized in that, The joint (41) and the through hole (111) are positioned and fitted together in a direction perpendicular to the length of the joint (41).

11. A relay as described in claim 10, characterized in that, At least one first gap (01) is formed between the two sides of the joint (41) in the thickness direction and the through hole (111), or, at least one hole wall of the through hole (111) for limiting the engagement with the joint (41) is provided with a notch (1111), the notch (1111) extends along the extension direction of the through hole (111) and at least constitutes a part of the first gap (01), and divides the hole wall into at least two parts.

12. A relay as described in claim 6, characterized in that, The joint (41) located in the through hole (111), the first glue groove (114) and the glue filling groove (113) is provided with at least one first groove (412) on both sides of the width direction.

13. A relay as described in claim 12, characterized in that, The first groove (412) extends along the thickness direction of the joint (41).

14. A relay as described in claim 12, characterized in that, The first grooves (412) on both sides of the joint (41) are staggered along the length of the joint (41).

15. A relay as described in claim 2, characterized in that, The auxiliary fixing part (43) and the connecting part (41) are arranged along the width direction of the body (42). The auxiliary fixing part (43) and the insertion hole (112) are limited and matched along the thickness direction of the auxiliary fixing part (43), and the second gap (02) is located on the side of the auxiliary fixing part (43) facing the connecting part (41).

16. A relay as described in claim 1, characterized in that, At least one side of the body (42) in the width direction is provided with at least one anti-retraction part (421) for interference fit with the limiting hole (121) and for restricting the body (42) from exiting the limiting hole (121) in the insertion direction.

17. A relay as described in claim 16, characterized in that, The anti-retraction part (421) is provided with a guide surface (4211) that is inclined relative to the insertion direction so that the width of the anti-retraction part (421) gradually decreases along the insertion direction.

18. A relay as described in claim 1, characterized in that, The limiting hole (121) is provided with a first limiting wall (122) and a second limiting wall (123) arranged along the thickness direction of the body (42). One of the first limiting wall (122) and the second limiting wall (123) has a protruding positioning protrusion (124) for the body (42) to abut against in order to position the body (42), and the other is in interference contact with the body (42).

19. A relay as described in claim 18, characterized in that, One of the first limiting wall (122) and the second limiting wall (123) opposite to the positioning protrusion (124) is provided with a limiting protrusion (125).

20. A relay as described in claim 19, characterized in that, The positioning protrusion (124) and the limiting protrusion (125) are each provided with a first guide surface (126) at the end away from the through hole (111) that is inclined relative to the insertion direction of the pin terminal (40).

21. A relay as described in claim 18, characterized in that, The body (42) is provided with at least one limiting rib (422) on the side away from the positioning protrusion (124) that abuts against the first limiting wall (122) or the second limiting wall (123).

22. A relay as described in claim 21, characterized in that, The limiting rib (422) has a second guide surface (423) at one end near the through hole (111) that is inclined relative to the insertion direction of the pin terminal (40).

Images