Relay

Abstract

The utility model discloses a relay which is provided with pin terminals used for bearing current inflow or outflow respectively, the end portion, used for being connected to the outside, of each pin terminal is provided with at least two connecting portions arranged at intervals in the width direction of the pin terminal, and the sectional area of the end portion of each connecting portion is gradually reduced towards the tail end of the connecting portion to form a tip shape. When the pin terminal is pulled out of a tin furnace, liquid is separated more easily, so that the undesirable phenomenon of the tin tip is reduced, product management and control are facilitated, subsequent processing procedures caused by the undesirable tin tip are avoided, the contact area of the tin liquid and the joint part can be reduced through the tip shape, the tail end of the joint part can enter the tin liquid and pierce the surface of the tin liquid, and the product quality is improved. And copper exposure caused by incomplete tinning is avoided, so that firm welding between the relay and the PCB is ensured when the relay is applied to the PCB.

Description

Technical Field

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

[0002] Relays in the prior art typically include a housing, a magnetic circuit portion housed therein, and a contact portion. The contact portion is provided with pin terminals electrically connected to the outside. The pin terminals include an input terminal for receiving current input and an output terminal for receiving current output. When driven by the magnetic circuit portion, the contact portion can control the connection or disconnection of the input and output terminals. The pin terminals are generally tinned to achieve better welding performance, protection, and conductivity. However, in practice, it has been found that existing pin terminals, after tinning, may have problems with poor tin tip elevation or exposed copper. When the relay is used to solder to a PCB board, the presence of tin tips on the pin terminals may make it difficult to accurately control the length of each pin terminal, requiring the reprocessing of excess tin tips and increasing the production process. If copper is exposed, the relay cannot be used for soldering to the PCB board or the soldering may be unreliable. Utility Model Content

[0003] The purpose of the present invention is to overcome the above-mentioned defects or problems in the background art and to provide a relay whose pin terminals are less likely to have problems such as poor tin tip pull-up or copper exposure.

[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, which is provided with a pin terminal for respectively carrying the inflow or outflow of current, and the end of the pin terminal for connecting to the outside is provided with at least two joints arranged at intervals along the width direction of the pin terminal, and the cross-sectional area of the end of the joint gradually decreases toward its end to form a pointed shape.

[0006] Based on Technical Solution 1, there is also Technical Solution 2. In Technical Solution 2 and its related embodiments, the outer wall of the joint is provided with an inclined surface forming a pointed shape.

[0007] Based on Technical Solution 2, Technical Solution 3 is also provided. In Technical Solution 3 and its related embodiments, the inclined surface includes two first inclined surfaces that deviate from each other along the thickness direction of the joint, and the first inclined surfaces extend along the width direction of the joint.

[0008] Based on Technical Solution 3, there is also Technical Solution 4. In Technical Solution 4 and its related embodiments, the angle between the first inclined surface and the extension direction of the pin terminal is greater than or equal to 10° and less than or equal to 20°.

[0009] Based on Technical Solution 4, Technical Solution 5 is also provided. In Technical Solution 5 and its related embodiments, the inclined surface also includes two second inclined surfaces that deviate from each other along the width direction of the joint, and the second inclined surfaces extend along the thickness direction of the joint.

[0010] Based on Technical Solution Five, there is also Technical Solution Six. In Technical Solution Six and its related embodiments, the angle between the second inclined surface and the extension direction of the pin terminal is greater than or equal to 45° and less than or equal to 55°.

[0011] Based on Technical Solution 1, there is also Technical Solution 7. In Technical Solution 7 and its related embodiments, the outer wall of the joint is provided with a curved surface for forming a pointed shape.

[0012] Based on any one of technical solutions one to seven, there is also a technical solution eight. In technical solution eight and its related embodiments, it also includes a accommodating part; the pin terminal passes through the accommodating part; the outer wall of the accommodating part is provided with a glue groove around the pin terminal, and the depth of the glue groove is greater than or equal to 2 mm.

[0013] Based on Technical Solution Eight, Technical Solution Nine is also provided. In Technical Solution Nine and its related embodiments, the pin terminal is provided with a main body, each joining portion is integrated with the main body, and a first groove extending along its thickness direction is provided near the joining portion on both sides in the width direction of the main body.

[0014] Based on Technical Solution Nine, Technical Solution Ten is also provided. In Technical Solution Ten and its related embodiments, second grooves extending along the width direction of the joint are provided close to the main body on both sides of the joint in the thickness direction.

[0015] Based on technical solution ten, technical solution eleven is also provided. In technical solution eleven and its related embodiments, the depth and width of the first groove are greater than the depth and width of the second groove, and the first groove is closer to the accommodating part than the second groove.

[0016] Based on technical solution one, technical solution twelve is also provided. In technical solution twelve and its related embodiments, the widths of the joints are consistent, and the width of each joint is greater than the width of the gap between adjacent joints.

[0017] From the above description of the present invention and its preferred embodiments, it can be seen that, 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:

[0018] After continuous observation, experimentation and research, the applicant has learned that the existing technical solutions lead to the technical problem that "after the pin terminals are tinned, the tin tip will be pulled up poorly or copper will be exposed. When the relay is used to be soldered to the PCB board, if there is a tin tip on the pin terminals, the length of each pin terminal may not be accurately controlled, and the excess tin tip needs to be reprocessed, which increases the production process. If copper is exposed, it cannot be used for soldering to the PCB board or the soldering will be unreliable." The reason is that the existing pin terminals need to carry a large current, have a large current-carrying area, and have a large end face area and a relatively flat end face. When tinned, they cannot completely pierce the surface of the tin liquid. The tin liquid has insufficient adhesion and cannot completely cover the pin terminals, resulting in partial non-tinning and copper exposure. Also, because the existing pin terminals have relatively flat end faces and a large end face area, the liquid is not easy to separate from the end face of the pin terminal when the pin terminal is pulled out of the tin furnace, which easily causes the tin tip to be pulled up.

[0019] In Technical Solution 1 and its preferred embodiment, because the pin terminal needs to carry a large current and has a large current-carrying area, the end portion of the pin terminal that is connected to the outside is provided with at least two joints spaced apart along the width of the pin terminal. Compared to solutions in which the pin terminal forms a single joint, this solution is more effective in preventing the tin tip from being pulled up and copper from being exposed when the pin terminal is too wide. The cross-sectional area of the end of the joint gradually decreases towards its distal end to form a pointed shape. On the one hand, this configuration makes it easier for the liquid to separate when the pin terminal is pulled out of the tin pot, thereby reducing the phenomenon of defective tin tips, which is beneficial for product control and avoiding subsequent processing steps caused by defective tin tips. On the other hand, the pointed shape can reduce the contact area between the tin liquid and the joint, thereby facilitating the end of the joint to enter the tin liquid and pierce the tin liquid surface, avoiding copper exposure caused by incomplete tinning, thereby ensuring a secure soldering of the relay to the PCB when the relay is applied to the relay. In addition, when the relay is applied to the relay, the pointed shape also facilitates the insertion of the pin terminal into the PCB socket, thereby facilitating assembly.

[0020] In technical solution 2 and its preferred embodiment, the outer wall of the joint is provided with an inclined surface forming a pointed shape, which is conducive to production and processing.

[0021] In technical solution three and its preferred embodiment, the inclined surface includes two first inclined surfaces that deviate from each other along the thickness direction of the joint, and the first inclined surface extends along the width direction of the joint to reduce the size and end area of the joint end in the thickness direction, so that when the joint is tinned, the tin liquid can better wrap the pin terminal and flow, avoiding poor morphology caused by the tin tip being pulled up, and is also beneficial to avoiding the inability to weld or weld firmly caused by exposed copper. This advantage is more prominent when the width of the joint is larger.

[0022] In technical solution four and its preferred embodiment, the angle between the first inclined surface and the extension direction of the pin terminal is greater than or equal to 10° and less than or equal to 20°. The small angle setting ensures the current-carrying strength of the pin terminal, and further enables the tin liquid to better wrap the pin terminal and flow, avoiding poor morphology caused by the tin tip being pulled up, and avoiding the inability to weld or weld firmly due to exposed copper.

[0023] In technical solution five and its preferred embodiment, the inclined surface also includes two second inclined surfaces that deviate from each other along the width direction of the joint, and the second inclined surfaces extend along the thickness direction of the joint, further reducing the size and end area of the end of the joint in the width direction, so that when the joint is tinned, the tin liquid can better wrap the pin terminal and flow, avoiding poor morphology caused by the tin tip being pulled up, and is also beneficial to avoiding the inability to weld or weld firmly due to exposed copper.

[0024] In technical solution six and its preferred embodiment, the angle between the second inclined surface and the first direction is greater than or equal to 45° and less than or equal to 55°, which is conducive to better forming a tip shape, so that the tin liquid can better wrap the pin terminal and flow, avoiding poor morphology caused by the tin tip being pulled up, and also helping to avoid the inability to weld or weld firmly due to copper exposure.

[0025] In technical solution seven and its preferred embodiment, the outer wall of the joint is provided with a curved surface for forming a tip shape, providing another way to form a tip shape.

[0026] In Technical Solution 8 and its preferred embodiment, a glue groove is provided on the outer wall of the container surrounding the pin terminal, and the depth of the glue groove is greater than or equal to 2 mm, so that glue can be applied to seal between the pin terminal and the outer wall of the container, thereby further improving the airtightness of the relay and its adaptability to the external environment, and improving the insulation performance between adjacent pin terminals.

[0027] In technical solution nine and its preferred embodiment, the pin terminal is provided with a main body, and each joint is connected to the main body as a whole. A first groove extending along the thickness direction is provided near the joint on both sides of the width direction of the main body. On the one hand, it is conducive to processing and ensures the strength of the pin terminal. On the other hand, the setting of the first groove can prevent the glue from creeping along the pin terminal when the glue groove is full, resulting in poor contact of the welding surface of the joint.

[0028] In technical solution ten and its preferred embodiment, second grooves extending along the width direction of the joint are provided close to the main body on both sides of the joint in the thickness direction, further preventing glue from creeping along the pin terminals and causing poor contact of the welding surface of the joint.

[0029] In technical solution eleven and its preferred embodiment, the area of the two side surfaces of the main body along the width direction is smaller, and the glue will reach the end of the joint more quickly through the two side surfaces. The area of the two surfaces of the main body along the thickness direction is larger, and the glue has a large diffusion area when passing through the two surfaces and reaches the end of the joint more slowly. For this reason, by setting the depth and width of the first groove larger than that of the second groove, it is actually set based on the diffusion of glue on different side surfaces of the pin terminal, so as to achieve better glue isolation effect and reduce the impact on the current-carrying area.

[0030] In technical solution 12 and its preferred embodiment, the width of each joint is consistent, and the width of each joint is greater than the width of the gap between adjacent joints, ensuring that the end of the pin terminal is easily formed into a pointed shape while preventing the size of the end of the pin terminal from being excessively reduced, thereby ensuring that the pin terminal still has good current-carrying capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 This is a three-dimensional exploded view of a relay according to an embodiment of the present utility model;

[0033] Figure 2 This is a schematic diagram of a hidden housing for a relay according to an embodiment of the present utility model;

[0034] Figure 3 This is a front view of the pin terminal of an embodiment of the present utility model;

[0035] Figure 4 This is a side view of the pin terminal according to an embodiment of the present invention.

[0036] Description of main reference numerals:

[0037] Container 10; base 11; housing 12; first side wall 13; through-groove 14; glue groove 15; pin terminal 20; body 21; first groove 211; engaging portion 22; first inclined surface 221; second inclined surface 222; second groove 223; movable contact 30; movable spring piece 31; movable contact point 311; movable spring lead-out piece 32; stationary contact 40; stationary contact point 41; coil assembly 50; armature assembly 60. DETAILED DESCRIPTION

[0038] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0039] In the claims, description and the above-mentioned drawings of the present utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" is to distinguish different objects rather than to describe a specific order.

[0040] In the claims, specification and the above-mentioned drawings of the present utility model, unless otherwise expressly defined, directional words, such as the terms "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like, indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the present utility model.

[0041] In the claims, specification and the above drawings of the present utility model, unless otherwise clearly defined, if the terms "fixed connection" or "fixed connection" are used, they should be understood in a broad sense, that is, any connection method without any displacement relationship and relative rotation relationship between the two parties, that is to say, including non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.

[0042] In the claims, description and drawings of the present utility model, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0043] See also Figure 1 , Figure 1 A relay is shown, which is provided with pin terminals 20 for respectively carrying current inflow or outflow. In this embodiment, the relay includes a container 10 and a contact portion, and the container 10 includes a base 11 and a housing 12. Figure 1 The structure of the base 11 and the housing 12 in this embodiment is shown. Figure 1The base 11 is a box-shaped structure with one end open. The length direction of the base 11 is the X-axis direction, the width direction is the Y-axis direction, and the height direction is the Z-axis direction. In this embodiment, the base 11 is open at one end along the Z-axis direction. The housing 12 is suitable for covering the opening of the base 11 and is fixed to the base 11. In this embodiment, the opening is located at the upper end of the base 11. The base 11 is provided with a bottom wall perpendicular to the Z-axis direction and a first side wall 13 perpendicular to the Y-axis direction. Two through slots 14 extending along the Y-axis direction are arranged on the first side wall 13 along the X-axis direction. Figure 2 , Figure 2 The schematic diagram of the pin terminal 20 passing through the first side wall 13 is shown. In this embodiment, the pin terminal 20 passes through the through groove 14 of the first side wall 13 (still referring to Figure 1 ), the outer surface of the first side wall 13 is further provided with a glue groove 15 surrounding the pin terminal 20, and the depth of the glue groove 15 is greater than or equal to 2 mm.

[0044] In practical applications, the relay also includes a magnetic circuit part, and the contact part is driven by the magnetic circuit part to open and close. The magnetic circuit part generally includes a coil assembly 50 fixed relative to the container 10 and an armature assembly 60 driven by the coil assembly 50 to rotate relative to the container 10. The specific structure of the magnetic circuit part can adopt the existing technology and will not be described in detail in this embodiment. In this embodiment, see Figure 1-2 The contact portion includes a movable contact 30 and a stationary contact 40. The movable contact 30 includes a movable spring 31 and a movable spring lead-out piece 32. One end of the movable spring 31 is fixed to the base 11 along its length, and the other end is adapted to cooperate with the armature assembly 60 and is provided with a movable contact 311. The movable contact 311 is adapted to be driven by the armature assembly 60 to close or open the contact with the stationary contact 40. The movable spring lead-out piece 32 avoids the movable contact 311 and is fixedly connected to the movable spring 31. It is located on the side of the movable spring 31 facing away from the stationary contact 30, so as to improve the contact stability between the movable spring 31 and the stationary contact 30 when current is flowing. One of the through slots 14 extending through the first side wall 13 forms one of the pin terminals 20. In this embodiment, the movable spring lead-out piece 32 is fixedly connected to the fixed end of the movable spring 31 and cooperates with the base 11 to be fixed within the accommodating member 10. The static contact 40 extends along the Y-axis direction and is fixed in the base 11 . The static contact 40 is provided with a static contact point 41 and penetrates another first through-slot 14 of the first side wall 13 to form another pin terminal 20 .

[0045] See also Figure 2-4 , Figure 3-4A schematic diagram of the pin terminal is shown. In this embodiment, the pin terminal 20 is a flat structure extending in the Y-axis direction. The pin terminal 20 is provided with a body 21. The end portion of the pin terminal 20 for connecting to the outside (the portion extending out of the accommodating component 10) is provided with at least two engaging portions 22 spaced apart along the width direction of the pin terminal 20. Each engaging portion 22 is connected to the body 21 as a whole. The body 21 is closer to the accommodating component 10 than the engaging portion 22. Both sides of the body 21 in the width direction are provided with first grooves 211 extending in the thickness direction thereof near the engaging portion 22. The cross section of the end portion of the engaging portion 22 is provided with a first groove 211 extending in the thickness direction thereof. The surface area gradually decreases toward its end to form a pointed shape. The purpose of forming the end of the joint 22 into a pointed shape is to make it easier for the joint 22 to pierce the surface of the tin liquid and enter the tin liquid and to make the tin liquid easier to flow and separate. In this embodiment, the pointed shape of the end of the joint 22 can be formed by reducing the size in one direction (such as the width direction), or by reducing the size in two or more directions (such as the width direction and the thickness direction, etc.), or by reducing the size in the entire circumference. The end face of the joint 22 can be presented as a sharp point, a sharp angle or a small area end face. In this embodiment, the outer wall of the joint 22 is provided with an inclined surface that forms a pointed shape. Specifically, the inclined surface includes two first inclined surfaces 221 that deviate from each other along the thickness direction of the joint 22 and two second inclined surfaces 222 that deviate from each other along the width direction of the joint 22. The first inclined surface 221 extends along the width direction of the joint 22, and the second inclined surface 222 extends along the thickness direction of the joint 22. The angle β of the first inclined surface 221 relative to the extension direction of the pin terminal 20 is greater than or equal to 10° and less than or equal to 20°. Figure 4 As shown, in the example given in this embodiment, the angle β of the first inclined surface 221 relative to the extension direction of the pin terminal 20 is 11°. The angle α of the second inclined surface 222 relative to the extension direction of the pin terminal 20 is greater than or equal to 45° and less than or equal to 55°. Figure 3 As shown, in the example given in this embodiment, the angle α of the second inclined surface 222 relative to the extension direction of the pin terminal 20 is 45°. It should be understood that in other embodiments, the outer wall of the joint portion 22 is further provided with a curved surface for forming a pointed shape, as long as the end of the joint portion 22 forms a pointed shape.

[0046] Second grooves 223 extending along the width of the body 21 are also provided on both sides of the engagement portion 22 in the thickness direction. The depth and width of the first groove 211 are greater than those of the second groove 223, and the first groove 211 is closer to the accommodating component 10 than the second groove 223. In this embodiment, the width of each engagement portion 22 is uniform, and the width of each engagement portion 22 is greater than the width of the gap between adjacent engagement portions 22.

[0047] In this embodiment, because the pin terminal 20 needs to carry a large current and has a large current-carrying area, the end portion of the pin terminal 20 for connecting to the outside is provided with at least two joints 22 spaced apart along the width of the pin terminal 20. Compared to a solution in which the pin terminal 20 has a single joint 22, this embodiment is more effective in preventing the tin tip from being pulled up and copper exposure caused by an excessively wide pin terminal 20. The cross-sectional area of the end of the joint 22 gradually decreases towards its distal end, forming a pointed shape. This configuration facilitates liquid separation when the pin terminal 20 is pulled out of the tin pot, thereby reducing the occurrence of defective tin tips, facilitating product control and preventing subsequent processing issues caused by defective tin tips. Furthermore, the pointed shape reduces the contact area between the tin liquid and the joint 22, facilitating the distal end of the joint 22 to enter the tin liquid and pierce the tin liquid surface, preventing copper exposure caused by incomplete tinning. This ensures a secure solder connection between the relay and the PCB when the relay is used. Furthermore, the pointed shape facilitates insertion of the pin terminal 20 into the PCB socket when the relay is used.

[0048] In this embodiment, the outer wall of the joint portion 22 is provided with an inclined surface forming a pointed shape, which is convenient for production and processing.

[0049] In this embodiment, the inclined surface includes two first inclined surfaces 221 that are opposite to each other along the thickness direction of the joint portion 22. The first inclined surface 221 extends along the width direction of the joint portion 22 to reduce the size and end area of the end of the joint portion 22 in the thickness direction, so that when the joint portion 22 is tinned, the tin liquid can better wrap the pin terminal 20 and flow, avoiding poor morphology caused by the tin tip being pulled up, and is also beneficial to avoiding the inability to weld or weld firmly caused by exposed copper. This advantage is more prominent when the width of the joint portion 22 is larger.

[0050] In this embodiment, the angle between the first inclined surface 221 and the extension direction of the pin terminal 20 is greater than or equal to 10° and less than or equal to 20°. The small angle setting ensures the current carrying strength of the pin terminal 20, and further enables the tin liquid to better wrap the pin terminal 20 and flow, avoiding poor morphology caused by the tin tip being pulled up, and avoiding the inability to weld or weld firmly caused by exposed copper.

[0051] In this embodiment, the inclined surface also includes two second inclined surfaces 222 that are opposite to each other along the width direction of the joint 22. The second inclined surfaces 222 extend along the thickness direction of the joint 22, further reducing the size and end area of the end of the joint 22 in the width direction, so that when the joint 22 is tinned, the tin liquid can better wrap the pin terminal 20 and flow, avoiding poor morphology caused by the tin tip being pulled up, and is also beneficial to avoiding the inability to weld or weld firmly caused by exposed copper.

[0052] In this embodiment, the angle between the second inclined surface 222 and the first direction is greater than or equal to 45° and less than or equal to 55°, which is conducive to the tin liquid better wrapping the pin terminal 20 and flowing, avoiding poor morphology caused by the tin tip being pulled up, and also helping to avoid the inability to weld or weld firmly caused by exposed copper.

[0053] In this embodiment, the outer wall of the joint portion 22 is provided with a curved surface for forming a tip shape, providing another way to form a tip shape.

[0054] In this embodiment, a glue groove 15 is provided on the outer wall of the accommodating component 10 around the pin terminal 20, and the depth of the glue groove 15 is greater than or equal to 2 mm, so that glue can be applied to seal between the pin terminal 20 and the outer wall of the accommodating component 10, thereby further improving the airtightness of the relay and its adaptability to the external environment, and improving the insulation performance between adjacent pin terminals 20.

[0055] In this embodiment, the pin terminal 20 is provided with a main body 21, and each joint part 22 is connected to the main body 21 as a whole. A first groove 211 extending along its thickness direction is provided on both sides of the width direction of the main body 21 near the joint part 22. On the one hand, it is conducive to processing and ensures the strength of the pin terminal 20. On the other hand, the setting of the first groove 211 can prevent the glue from creeping along the pin terminal 20 when the glue groove 15 is full, resulting in poor contact of the welding surface of the joint part 22.

[0056] In this embodiment, second grooves 223 extending along the width direction are provided on both sides of the joint 22 in the thickness direction close to the body 21, further preventing glue from creeping along the pin terminal 20 and causing poor contact of the welding surface of the joint 22.

[0057] In this embodiment, the areas of the two side surfaces of the main body 21 along the width direction are smaller, and the glue will reach the end of the joint 22 more quickly through the two side surfaces. The areas of the two surfaces of the main body 21 along the thickness direction are larger, and the glue has a large diffusion area when passing through the two surfaces and reaches the end of the joint 22 more slowly. For this reason, by setting the depth and width of the first groove 211 larger than those of the second groove 223, it is actually set based on the glue diffusion conditions on different side surfaces of the pin terminal 20, so as to achieve a better glue isolation effect and reduce the impact on the current-carrying area.

[0058] In this embodiment, the widths of the joints 22 are consistent, and the width of each joint 22 is greater than the width of the gap between adjacent joints 22, ensuring that the end of the pin terminal 20 can be easily formed into a pointed shape while preventing the size of the end of the pin terminal 20 from being excessively reduced, thereby ensuring that the pin terminal 20 still has good current-carrying capacity.

[0059] The above description and embodiments are used to explain the scope of protection of the utility model, but do not constitute a limitation on the scope of protection of the utility model. Based on the enlightenment of the utility model or the above embodiments, modifications, equivalent replacements, or other improvements to the embodiments of the utility model or part of the technical features thereof that can be obtained by ordinary technicians in this field through logical analysis, reasoning, or limited experiments in combination with common knowledge, ordinary technical knowledge in this field and / or existing technology should be included in the scope of protection of the utility model.

Claims

1. A relay, characterized in that: It is provided with a pin terminal (20) for respectively bearing the inflow or outflow of current, and the end of the pin terminal (20) for connecting to the outside is provided with at least two connecting parts (22) arranged at intervals along the width direction of the pin terminal (20), and the cross-sectional area of the end of the connecting part (22) gradually decreases toward its end to form a pointed shape.

2. A relay as claimed in claim 1, characterized in that: The outer wall of the joint portion (22) is provided with an inclined surface for forming a pointed tip shape.

3. A relay as claimed in claim 2, characterized in that: The inclined surface comprises two first inclined surfaces (221) that are separated from each other along the thickness direction of the joint portion (22), and the first inclined surfaces (221) extend along the width direction of the joint portion (22).

4. A relay as claimed in claim 3, characterized in that: The included angle of the first inclined surface (221) relative to the extension direction of the pin terminal (20) is greater than or equal to 10° and less than or equal to 20°.

5. A relay as claimed in claim 4, characterized in that: The inclined surface further includes two second inclined surfaces (222) that are separated from each other along the width direction of the joint (22), and the second inclined surfaces (222) extend along the thickness direction of the joint (22).

6. A relay as claimed in claim 5, characterized in that: The included angle of the second inclined surface (222) relative to the extension direction of the pin terminal (20) is greater than or equal to 45° and less than or equal to 55°.

7. A relay as claimed in claim 1, characterized in that: The outer wall of the joint portion (22) is provided with a curved surface for forming a pointed end shape.

8. A relay according to any one of claims 1 to 7, characterized in that: It also includes a receiving part (10); the pin terminal (20) passes through the receiving part (10); the outer wall of the receiving part (10) is provided with a glue groove (15) surrounding the pin terminal (20), and the depth of the glue groove (15) is greater than or equal to 2 mm.

9. A relay as claimed in claim 8, characterized in that: The pin terminal (20) is provided with a body (21), each joint portion (22) is integrally connected to the body (21), and first grooves (211) extending along the thickness direction of the body (21) are provided on both sides of the body (21) in the width direction near the joint portion (22).

10. A relay as claimed in claim 9, characterized in that: Second grooves (223) extending along the width direction of the joint portion (22) are also provided on both sides of the joint portion (22) in the thickness direction close to the body (21).

11. A relay as claimed in claim 10, characterized in that: The depth and width of the first groove (211) are greater than the depth and width of the second groove (223), and the first groove (211) is closer to the accommodating component (10) than the second groove (223).

12. A relay as claimed in claim 1, characterized in that: The widths of the joints (22) are consistent, and the width of each joint (22) is greater than the width of the gap between adjacent joints (22).

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