Relay

Abstract

The utility model relates to a relay which comprises a coil frame and a static spring terminal. The coil rack is provided with a slot and a first blind hole, the slot is provided with an insertion port, and the first blind hole is arranged in the slot. The static spring terminal is arranged in the slot through the insertion port, a gap is formed between the static spring terminal and slot side walls on two sides of the slot along the insertion direction of the static spring terminal, the static spring terminal is provided with a first insertion part, and the first insertion part is in interference fit with the first blind hole. As the gap is formed between the static spring terminal and the slot side wall of the slot, plastic scraps caused by contact friction between the static spring terminal and the slot side wall of the slot in the assembling process can be avoided, and the contact reliability of the relay contact is ensured. The first plugging part of the static spring terminal is in interference fit with the first blind hole, so that the first blind hole can accommodate plastic chips generated by contact friction between the first plugging part and the hole wall of the first blind hole, and the plastic chips are prevented from falling into the relay shell.

Description

Technical Field

[0001] This application relates to the field of electrical technology, and in particular to a relay. Background Technology

[0002] A relay is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit). It is commonly used in automatic control circuits, where it plays a role in automatic adjustment, safety protection, and switching circuits.

[0003] A relay includes a stationary spring for connecting the load. The stationary spring is typically inserted into a support, which can be a coil holder, a base, or other support structure. However, during the insertion process, the stationary spring comes into contact with the support and rubs against it, generating debris. This debris falling onto the contacts can affect the reliability of the contact. Utility Model Content

[0004] Therefore, it is necessary to provide a relay that ensures the reliability of contact.

[0005] A relay, comprising:

[0006] A coil holder, the coil holder having a slot and a first blind hole, the slot having an insertion opening, and the first blind hole being disposed within the slot; and

[0007] A stationary spring terminal is provided in the slot through the insertion port. There is a gap between the stationary spring terminal and the slot sidewalls on both sides along the insertion direction of the stationary spring terminal. The stationary spring terminal is provided with a first insertion part, which is interference-fitted with the first blind hole.

[0008] In one embodiment, the slot has a first slot sidewall, which is disposed opposite to the insertion port, a first blind hole is disposed on the first slot sidewall, and a first plug-in portion is disposed on the side of the stationary spring terminal facing the first slot sidewall.

[0009] In one embodiment, the slot further has a second slot sidewall located between the first slot sidewall and the insertion port and connected to the first slot sidewall, and the second slot sidewall has a gap with the stationary spring terminal.

[0010] In one embodiment, the sidewall of the second groove near the insertion port is provided with an avoidance notch.

[0011] In one embodiment, the slot further has an opening and a bottom wall opposite to the opening, and the first side wall and the second side wall are both disposed between the opening and the bottom wall and connected to the bottom wall; in the direction from the bottom wall toward the opening, the second side wall is inclined toward the first side wall on the side of the insertion opening to form the clearance notch.

[0012] In one embodiment, the slot further has an opening and a bottom wall opposite to the opening. The first and second side walls are both located between the opening and the bottom wall and connected to the bottom wall. The stationary spring terminal includes a mounting section and a lead-out foot. The mounting section and the lead-out foot are connected to form an L-shape. The mounting section is located on the bottom wall and has a stationary contact. The lead-out foot extends along the bottom wall to the opening. One end of the lead-out foot away from the mounting section extends through the opening of the slot. There is a gap between the lead-out foot and the side walls of the slot on both sides along the insertion direction of the stationary spring terminal. The first insertion portion is located on the lead-out foot.

[0013] In one embodiment, the coil frame includes a winding frame and a flange portion connected to the winding frame, the flange portion having a second blind hole; the mounting section has a second insertion portion, the second insertion portion being interference-fitted with the second blind hole.

[0014] In one embodiment, the relay further includes a movable reed, the first end of which is provided with a movable contact, the movable contact being disposed opposite to the stationary contact.

[0015] In one embodiment, the coil frame further includes an insulating baffle, which is disposed opposite to the sidewall of the second slot and connected to the sidewall of the first slot. There is a gap between the insulating baffle and the stationary spring terminal. The insulating baffle is located between the lead-out foot and the first end of the moving spring.

[0016] In one embodiment, there is a clearance interval between the insulating baffle and the flange, the mounting section passes through the clearance interval, and there is a gap between the mounting section and the insulating baffle.

[0017] In one embodiment, there are two slots, which are located on opposite sides of the flange. There are two stationary spring terminals, which are respectively disposed in the two slots. There are two moving contacts, which are both disposed at the first end of the moving spring, and the two moving contacts are respectively disposed opposite to the two stationary contacts.

[0018] In one embodiment, the flange portion is provided with an insulating rib, which is located between the mounting sections of the two stationary spring terminals.

[0019] In one embodiment, the first end of the movable spring is bridged with two movable contacts, and the first end of the movable spring is also provided with a conductive element, and both movable contacts are connected to the conductive element.

[0020] In one embodiment, two insulating baffles are provided, and the two insulating baffles correspond one-to-one with the two slots respectively; the coil frame also includes a connecting part, which is disposed opposite to the flange part, and the opposite sides of the connecting part are respectively connected to the two insulating baffles one-to-one. The connecting part and the two insulating baffles surround to form a receiving groove, and the stationary contact and the moving contact are both disposed in the receiving groove.

[0021] In one embodiment, the connecting portion is provided with a positioning rib on the side facing the flange portion. The positioning rib is integrally formed with the connecting portion and is positioned and engaged with the first end of the movable spring.

[0022] In one embodiment, the relay further includes a housing and a cover. The housing has a receiving cavity and an opening communicating with the receiving cavity. The coil frame and the stationary spring terminal are disposed in the receiving cavity. The cover is disposed in the opening and has a through hole. One end of the stationary spring terminal passes through the through hole. The gap between the lead-out pin and the wall of the through hole is smaller than the gap between the stationary spring terminal and the slot sidewall. The lead-out pin is fixed to the wall of the through hole with adhesive.

[0023] In the aforementioned relay, during assembly, the stationary spring terminal is positioned opposite the insertion port, and then pushed into the slot until the first insertion part is interference-fitted with the first blind hole. This assembles the stationary spring terminal onto the coil holder. Because there is a gap between the stationary spring terminal and the slot sidewalls on both sides along the insertion direction of the stationary spring terminal, plastic debris is prevented from being generated during assembly due to contact and friction between the stationary spring terminal and the slot sidewalls, ensuring the reliability of the relay contacts. Since the first insertion part of the stationary spring terminal is interference-fitted with the first blind hole, the first blind hole can collect plastic debris generated from contact and friction between the first insertion part and the hole wall, preventing plastic debris from falling into the relay housing. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a relay according to an embodiment of this application.

[0025] Figure 2 This is a schematic diagram of the assembled structure of the coil frame, stationary spring component, moving spring component, and cover body according to an embodiment of this application.

[0026] Figure 3 for Figure 2 The diagram shows the structure of the coil frame.

[0027] Figure 4 for Figure 2 The diagram shows the front view of the assembled coil frame, stationary spring assembly, and moving spring assembly.

[0028] Figure 5 for Figure 4 Sectional view along the middle AA.

[0029] Figure 6 This is a top view of the coil frame, stationary spring component, moving spring component, and cover body assembled according to an embodiment of this application.

[0030] Figure 7 for Figure 6 A cross-sectional view along the middle BB.

[0031] Figure 8 This is a schematic diagram of the structure of a stationary spring component and a moving spring component in accordance with an embodiment of this application.

[0032] Figure 9 This is a schematic diagram of the structure of a stationary spring terminal according to an embodiment of this application.

[0033] Figure 10 This is a schematic diagram of the structure of a movable spring according to an embodiment of this application.

[0034] Explanation of icon numbers:

[0035] 10. Coil holder; 11. Winding holder; 12. Mounting bracket; 121. Slot; 1211. First slot sidewall; 12111. First blind hole; 1212. Second slot sidewall; 12121. Clearance notch; 1213. Insertion port; 1214. Slot bottom wall; 1215. Slot opening; 122. Flange; 1221. Second blind hole; 1222. Insulating rib; 1223. Perforation; 123. Insulating baffle; 1231. Clearance interval; 124. Connecting part ; 1241, Positioning rib; 20, Static spring component; 21, Static spring terminal; 211, Lead-out foot; 2111, First insertion part; 212, Mounting section; 2121, Second insertion part; 22, Static contact; 30, Moving spring component; 31, Moving spring leaf; 311, First end; 3111, First mounting hole; 32, Moving contact; 33, Conductive component; 331, Second mounting hole; 40, Iron core; 50, Outer shell; 51, Housing; 52, Cover; 521, Through hole. Detailed Implementation

[0036] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0037] See Figure 1 and Figure 2 One embodiment of this application provides a relay, which is an inverted snap-fit ​​relay. The relay includes a coil frame 10 and a stationary spring component 20. The coil frame 10 is made of plastic.

[0038] Further, see Figure 2 and Figure 3 The coil frame 10 includes a winding frame 11 and a mounting frame 12. The winding frame 11 has a receiving cavity extending along its axial direction, and the iron core 40 is disposed in the receiving cavity. The coil is wound on the outer surface of the winding frame 11. The mounting frame 12 is disposed at one end of the winding frame 11 along its axial direction and surrounds the winding frame 11 to form a winding window. The stationary spring component 20 is disposed on the mounting frame 12.

[0039] In one embodiment, see Figure 2 and Figure 3 The mounting bracket 12 is provided with a slot 121, which has an insertion port 1213. The stationary spring component 20 includes a stationary spring terminal 21, which is disposed in the slot 121 through the insertion port 1213. There is a gap between the stationary spring terminal 21 and the slot sidewalls of the slot 121 on both sides along the insertion direction of the stationary spring terminal 21.

[0040] Further, see Figure 2 , Figure 4 and Figure 5 The mounting bracket 12 is also provided with a first blind hole 12111, which is located in the slot 121. The stationary spring terminal 21 is provided with a first insertion part 2111, which is located in the first blind hole 12111 and is interference-fitted with the first blind hole 12111.

[0041] During assembly, the stationary spring terminal 21 is positioned opposite the insertion port 1213, and then pushed into the slot 121 until the first insertion part 2111 is press-fitted with the first blind hole 12111. This assembles the stationary spring terminal 21 onto the coil holder 10. Because there is a gap between the stationary spring terminal 21 and the slot sidewalls of the slot 121 along the insertion direction of the stationary spring terminal 21, plastic debris is prevented from being generated during assembly due to contact and friction between the stationary spring terminal 21 and the slot sidewalls of the slot 121, ensuring the reliability of the relay contact. Since the first insertion part 2111 of the stationary spring terminal 21 is press-fitted with the first blind hole 12111, the first blind hole 12111 can collect plastic debris generated by contact and friction between the first insertion part 2111 and the hole wall of the first blind hole 12111, preventing plastic debris from falling into the relay housing 51.

[0042] In one embodiment, see Figure 3 The slot 121 has a notch 1215 and a bottom wall 1214 opposite to the notch 1215. It should be noted that the bottom wall 1214 is located on the side of the slot 121 closest to the winding frame 11, and the notch 1215 is located on the side of the slot 121 away from the winding frame 11. In one embodiment, see [reference needed]. Figure 2 , Figure 3 and Figure 9 The stationary spring terminal 21 includes a mounting section 212 and a lead-out pin 211, which are connected to form an L-shape. The mounting section 212 is located on the bottom wall 1214 of the slot. The lead-out pin 211 is located within the slot 121 and extends along the bottom wall 1214 to the slot opening 1215. One end of the lead-out pin 211, facing away from the mounting section 212, protrudes through the slot opening 1215. Thus, the end of the lead-out pin 211 protruding from the slot 121 can be connected to other electrical components.

[0043] Specifically, there is a gap between the lead-out pin 211 and the slot sidewalls of the slot 121 on both sides along the insertion direction of the stationary spring terminal 21. This prevents the lead-out pin 211 from contacting and rubbing against the slot sidewalls of the slot 121 during assembly, thus avoiding the generation of plastic debris and ensuring the reliability of the relay contact.

[0044] Specifically, see Figure 9 The first insertion part 2111 is provided on the lead-out pin 211. This facilitates the interference fit between the stationary spring terminal 21 and the first blind hole 12111.

[0045] In one embodiment, see Figure 2 The stationary spring component 20 also includes a stationary contact 22, which is located in the mounting section 212. Thus, the mounting section 212 provides a mounting position for the stationary contact 22, facilitating its installation.

[0046] In one embodiment, see Figure 3The mounting bracket 12 includes a flange portion 122. The flange portion 122 is located at one end of the winding frame 11 along its axial direction and is connected to the winding frame 11 to form a winding window. The flange portion 122 is provided with a second blind hole 1221. It should be noted that part of the flange portion 122 is the bottom wall 1214 of the groove.

[0047] Specifically, see Figure 2 and Figure 3 The flange portion 122 has a through hole 1223, through which the iron core 40 passes. A second blind hole 1221 is provided between the iron core 40 and the stationary spring terminal 21. Further, see [reference needed]. Figure 2 and Figure 9 The stationary spring terminal 21 also has a second insertion portion 2121. Specifically, the second insertion portion 2121 is located on the side of the mounting section 212 facing the second blind hole 1221. The second insertion portion 2121 is located inside the second blind hole 1221 and is interference-fitted with the second blind hole 1221. In this way, the insertion strength of the stationary spring terminal 21 and the coil frame 10 can be further improved, ensuring the consistency of the insertion height of the stationary spring terminal 21, that is, high product parameter consistency, and preventing the stationary spring terminal 21 from separating from the coil frame 10. In addition, by setting the first insertion portion 2111 on the lead-out foot 211 and the second insertion portion 2121 in the mounting section 212, compared with the first insertion portion 2111 and the second insertion portion 2121 being arranged in a straight line, it is not necessary to increase the height of the stationary spring terminal 21, thereby achieving a low height and reducing costs.

[0048] In one embodiment, see Figure 3 The slot 121 has a first slot sidewall 1211. The first slot sidewall 1211 is located between the slot opening 1215 and the slot bottom wall 1214, and is connected to the slot bottom wall 1214. The first slot sidewall 1211 is disposed opposite to the insertion port 1213, and a first blind hole 12111 is provided on the first slot sidewall 1211. A first insertion part 2111 is provided on the side of the stationary spring terminal 21 facing the first slot sidewall 1211. During assembly, the stationary spring terminal 21 is pushed towards the first slot sidewall 1211 until the first insertion part 2111 and the first blind hole 12111 are interference-fitted. This facilitates the assembly of the stationary spring terminal 21 and improves the assembly efficiency of the stationary spring terminal 21. In addition, better utilization of the first slot sidewall 1211 reduces costs and results in a compact structure.

[0049] In one embodiment, see Figure 3The slot 121 also has a second slot sidewall 1212. It should be noted that the second slot sidewall 1212 is the outer slot sidewall of the mounting bracket 12. The second slot sidewall 1212 is located between the slot opening 1215 and the slot bottom wall 1214, and is connected to the slot bottom wall 1214. The second slot sidewall 1212 is also located between the first slot sidewall 1211 and the insertion port 1213, and is connected to the first slot sidewall 1211. By providing the second slot sidewall 1212, the withstand voltage between the coil and the stationary spring terminal 21 can be prevented from decreasing, and the strength of the flange portion 122 can be prevented from weakening and deforming towards the winding window, thereby preventing the enameled wire of the coil from scratching and breaking against the flange portion 122 during winding.

[0050] During the plastic molding process of the coil frame 10, the side wall 1212 of the second groove near the insertion port 1213 is prone to inward deformation. Therefore, in this embodiment, refer to... Figure 2 The second groove sidewall 1212 has a clearance notch 12121 on the side near the insertion port 1213. This prevents the sidewall 1212 near the insertion port 1213 from deforming inward and rubbing against the stationary spring terminal 21, thus avoiding the generation of plastic debris and ensuring the reliability of the relay contact.

[0051] Optionally, see Figure 2 and Figure 3 In the direction from the bottom wall 1214 of the groove towards the groove opening 1215, the side of the second groove sidewall 1212 near the insertion port 1213 is inclined towards the side of the first groove sidewall 1211 to form an avoidance notch 12121 on the side of the second groove sidewall 1212 near the insertion port 1213.

[0052] It is understandable that the side of the second slot sidewall 1212 near the insertion port 1213 is removed by making an inverted triangle. This can prevent the side of the second slot sidewall 1212 near the insertion port 1213 from deforming inward and rubbing against the stationary spring terminal 21 to generate plastic debris, thus ensuring the reliability of the relay contact.

[0053] In one embodiment, see Figure 4 and Figure 8 The relay also includes a moving spring component 30. The moving spring component 30 includes a moving spring plate 31 and a moving contact 32. The first end 311 of the moving spring plate 31 is correspondingly disposed with respect to the mounting section 212 of the stationary spring terminal 21. The moving contact 32 is disposed at the first end 311 of the moving spring plate 31, and is disposed opposite to the stationary contact 22. Thus, under the action of the armature, the moving spring component 30 moves, causing the moving contact 32 to contact or disconnect from the stationary contact 22, thereby achieving the purpose of circuit connection or disconnection.

[0054] In one embodiment, see Figure 2 and Figure 3The coil holder 10 also includes an insulating baffle 123. The insulating baffle 123 is disposed between the lead-out foot 211 of the stationary spring terminal 21 and the first end 311 of the moving spring 31, and the insulating baffle 123 is connected to the side wall 1211 of the first slot. In this way, the insulating baffle 123 plays an insulating role between the lead-out foot 211 of the stationary spring terminal 21 and the first end 311 of the moving spring 31, increasing the insulation between the stationary spring terminal 21 and the moving spring 31.

[0055] Further, see Figure 3 An insulating baffle 123 is disposed opposite to the second slot sidewall 1212 and connected to the first slot sidewall 1211. The insulating baffle 123, the first slot sidewall 1211, the second slot sidewall 1212, and the slot bottom wall 1214 form a slot 121 with an insertion opening 1213 and a groove opening 1215. It is understood that there are gaps between the lead-out foot 211 and the insulating baffle 123 and the second slot sidewall 1212. This can prevent the stationary spring terminal 21 from contacting and rubbing against the insulating baffle 123 and the second slot sidewall 1212 during assembly, thus avoiding the generation of plastic debris and ensuring the reliability of the contact between the stationary contact 22 and the moving contact 32.

[0056] In one embodiment, see Figure 2 and Figure 3 An clearance interval 1231 is provided between the insulating baffle 123 and the flange portion 122, and the mounting section 212 passes through the clearance interval 1231. It can be understood that the end of the mounting section 212 opposite to the lead-out foot 211 is provided on the side of the insulating baffle 123 opposite to the lead-out foot 211 via the clearance interval 1231.

[0057] Further, see Figure 4 There is a gap between the mounting section 212 and the insulating baffle 123. This prevents the mounting section 212 from contacting and rubbing against the insulating baffle 123 during assembly, thus avoiding the generation of plastic debris and ensuring the stability of the contact between the stationary contact 22 and the moving contact 32.

[0058] In one embodiment, see Figure 3 There are two slots 121, which are respectively located on opposite sides of the mounting bracket 12. (See reference...) Figure 2 There are two stationary spring components 20, and the stationary spring terminals 21 of the two stationary spring components 20 are respectively located in the two slots 121.

[0059] Specifically, see Figure 3The second slot sidewalls 1212 of the two slots 121 are respectively provided on opposite sides of the flange portion 122, and the first slot sidewalls 1211 of the two slots 121 extend from their corresponding second slot sidewalls 1212 toward the second slot sidewall 1212 of the other slot 121. Two insulating baffles 123 are provided, and the two insulating baffles 123 are respectively arranged opposite to the two second slot sidewalls 1212 to form two slots 121.

[0060] Further, see Figure 4 The first end 311 of the moving spring 31 is located between the two stationary spring terminals 21. Specifically, the first end 311 of the moving spring 31 is located between the lead-out pins 211 of the two stationary spring terminals 21. Two moving contacts 32 are provided, each located at the first end 311 of the moving spring 31, and each moving contact 32 is respectively positioned opposite to a stationary contact 22 of the two stationary spring terminals 21. This makes the relay a two-contact structure.

[0061] In one embodiment, see Figure 2 and Figure 3 Two second blind holes 1221 are provided, and the second insertion portions 2121 of the two stationary spring terminals 21 are respectively provided in the two second blind holes 1221. In this way, on the one hand, the firmness of the insertion of the stationary spring terminal 21 into the coil frame 10 can be guaranteed, and on the other hand, the consistency of the insertion height of the stationary spring assembly can be guaranteed, that is, the consistency of the relay parameters can be guaranteed.

[0062] In one embodiment, see Figure 2 and Figure 3 The flange portion 122 is provided with an insulating rib 1222, which is located between the mounting sections 212 of the two stationary spring components 20. In this way, the insulating rib 1222 plays an insulating role between the two stationary spring components 20, ensuring the insulation between the two stationary spring components 20.

[0063] Further, see Figure 3 The insulating rib 1222 is connected to one end of the two insulating baffles 123 near the flange 122. This increases the strength of the coil frame 10, thereby improving the consistency of the insertion height of the two stationary spring components 20.

[0064] In one embodiment, see Figure 2 and Figure 3 The coil frame 10 also includes a connecting portion 124. The connecting portion 124 is disposed opposite to the flange portion 122, and the opposite sides of the connecting portion 124 are respectively connected to two insulating baffles 123. In this way, the strength of the coil frame 10 can be increased, thereby improving the consistency of the insertion height of the two stationary spring components 20.

[0065] Further, see Figure 2 and Figure 3 The connecting part 124 and the two insulating baffles 123 surround to form a receiving groove, and the stationary contact 22 and the moving contact 32 are both located in the receiving groove.

[0066] In one embodiment, see Figure 2 and Figure 3 The connecting portion 124 has a positioning rib 1241 on the side facing the flange portion 122, and the positioning rib 1241 is positioned and engaged with the first end 311 of the moving spring 31. Optionally, the positioning rib 1241 is integrally formed with the connecting portion 124. In this way, there is no need to insert a positioning piece into the coil frame 10, which can avoid plastic debris caused by the insertion of the positioning piece, ensure the reliability of the contact between the stationary contact 22 and the moving contact 32, and also reduce the number of positioning pieces and other parts, thereby reducing costs. In addition, the positioning rib 1241 can also improve the flow of glue at the weld line, thereby increasing the strength of the coil at this point.

[0067] In one embodiment, see Figure 8 The first end 311 of the moving spring 31 bridges the two moving contacts 32. The first end 311 of the moving spring 31 is located between the leads 211 of the two stationary spring terminals 21. The magnetic field generated by the current through the leads 211 exerts a force on the bridging structure of the first end 311 of the moving spring 31 in the direction of the stationary contact 22, which can resist the electric repulsive force and prevent the moving contact 32 from popping open.

[0068] Further, see Figure 8 The moving spring component 30 also includes a conductive element 33. Optionally, the conductive element 33 is a conductive sheet. The conductive element 33 is disposed at the first end 311 of the moving spring sheet 31, and both moving contacts 32 are connected to the conductive element 33. By providing the conductive element 33 at the first end 311 of the moving spring sheet 31, the requirement for high current carrying capacity can be met. The moving spring component 30 and the two stationary spring components 20 cooperate to form a bridging structure, which can meet the requirements for high withstand voltage between large contact gaps and open contacts, and also meet the requirement for short-circuit current withstand.

[0069] Further, see Figure 8 and Figure 10 The first end 311 of the movable spring 31 has two first mounting holes 3111, and the conductive element 33 has two second mounting holes 331. The two first mounting holes 3111 and the two second mounting holes 331 are connected in a one-to-one correspondence. One movable contact 32 is located in one of the first mounting holes 3111 and the second mounting hole 331 connected to the first mounting hole 3111, and the other movable contact 32 is located in the other first mounting hole 3111 and the second mounting hole 331 connected to the first mounting hole 3111. In this way, the assembly of the movable spring 31, the movable contact 32, and the conductive element 33 is realized.

[0070] In one embodiment, see Figure 1 and Figure 2The relay also includes a housing 50. The coil holder 10, the stationary spring assembly 20, and the moving spring assembly 30 are all housed within the housing 50. Thus, the housing 50 provides protection and effectively extends the service life of the relay.

[0071] Further, see Figure 1 and Figure 2 The outer casing 50 includes a housing 51 and a cover 52. The housing 51 has a receiving cavity and an opening communicating with the receiving cavity. The coil frame 10, the stationary spring component 20, and the moving spring component 30 are disposed in the receiving cavity through the opening, and the cover 52 is disposed in the opening. During installation, the coil frame 10, the stationary spring component 20, and the moving spring component 30 are disposed in the receiving cavity, and then the cover 52 is disposed in the opening to achieve plastic sealing and fixation. In this way, the housing 51 and the cover 52 cooperate to protect the coil frame 10, the stationary spring component 20, and the moving spring component 30, preventing external substances from entering the receiving cavity and ensuring the performance and service life of the relay.

[0072] Further, see Figure 1 , Figure 6 and Figure 7 The cover 52 has a through hole 521. One end of the lead-out foot 211, facing away from the mounting section 212, passes through the through hole 521. The lead-out foot 211 is fixed to the wall of the through hole 521 by applying adhesive. This adhesive application method fixes the lead-out foot 211 to the cover 52, improving the reliability of the stationary spring terminal 21. Since the slot 121 has a large width, adhesive leakage is likely to occur. Therefore, in this embodiment, adhesive application is used to connect the lead-out foot 211 and the cover 52. This avoids the risk of adhesive seeping through the slot 121 to the stationary contact 22 and the moving contact 32, causing them to lose conductivity.

[0073] In one embodiment, the gap between the lead-out foot 211 and the wall of the through hole 521 is smaller than the gap between the stationary spring terminal 21 and the side wall of the slot 121. This prevents excess adhesive during the dispensing and fixing process.

[0074] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do 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 a limitation of this application.

[0075] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0076] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0077] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0078] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0079] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0080] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A relay, characterized in that, include: A coil holder, the coil holder having a slot and a first blind hole, the slot having an insertion opening, and the first blind hole being disposed within the slot; as well as A stationary spring terminal is provided in the slot through the insertion port. There is a gap between the stationary spring terminal and the slot sidewalls on both sides along the insertion direction of the stationary spring terminal. The stationary spring terminal is provided with a first insertion part, which is interference-fitted with the first blind hole.

2. The relay according to claim 1, characterized in that, The slot has a first slot sidewall, which is disposed opposite to the insertion port. The first blind hole is disposed on the first slot sidewall, and the first plug-in portion is disposed on the side of the stationary spring terminal facing the first slot sidewall.

3. The relay according to claim 2, characterized in that, The slot also has a second slot sidewall, which is located between the first slot sidewall and the insertion port and is connected to the first slot sidewall. There is a gap between the second slot sidewall and the stationary spring terminal.

4. The relay according to claim 3, characterized in that, The second groove sidewall has an avoidance notch on the side near the insertion port.

5. The relay according to claim 4, characterized in that, The slot also has a slot opening and a slot bottom wall opposite to the slot opening. The first slot side wall and the second slot side wall are both located between the slot opening and the slot bottom wall and are connected to the slot bottom wall. In the direction from the bottom wall of the groove toward the groove opening, the second groove sidewall is inclined toward the first groove sidewall on the side of the insertion port to form the clearance notch.

6. The relay according to claim 3, characterized in that, The slot also has a slot opening and a slot bottom wall opposite to the slot opening. The first slot side wall and the second slot side wall are both located between the slot opening and the slot bottom wall and are connected to the slot bottom wall. The stationary spring terminal includes a mounting section and a lead-out pin. The mounting section and the lead-out pin are connected to form an L-shape. The mounting section is located on the bottom wall of the slot and has a stationary contact. The lead-out pin extends along the bottom wall of the slot to the slot opening. One end of the lead-out pin away from the mounting section extends out through the slot opening. There is a gap between the lead-out pin and the slot sidewalls on both sides along the insertion direction of the lead-out pin. The first insertion part is located on the lead-out pin.

7. The relay according to claim 6, characterized in that, The coil frame includes a winding frame and a flange portion connected to the winding frame, and the flange portion is provided with a second blind hole; The mounting section is provided with a second insertion part, which is interference-fitted with the second blind hole.

8. The relay according to claim 7, characterized in that, The relay also includes a movable spring, the first end of which is provided with a movable contact, which is arranged opposite to the stationary contact.

9. The relay according to claim 8, characterized in that, The coil frame also includes an insulating baffle, which is disposed opposite to the side wall of the second slot and connected to the side wall of the first slot. There is a gap between the insulating baffle and the stationary spring terminal. The insulating baffle is located between the lead-out foot and the first end of the moving spring.

10. The relay according to claim 9, characterized in that, There is a clearance interval between the insulating baffle and the flange, the mounting section passes through the clearance interval, and there is a gap between the mounting section and the insulating baffle.

11. The relay according to claim 8, characterized in that, The slot is provided in two places, and the two slots are respectively located on opposite sides of the flange. The stationary spring terminal is provided in two places, and the two stationary spring terminals are respectively disposed in the two slots in a one-to-one correspondence. The moving contact is provided in two parts, and both moving contacts are located at the first end of the moving spring. The two moving contacts are respectively arranged opposite to the two stationary contacts.

12. The relay according to claim 11, characterized in that, The flange portion is provided with an insulating rib, which is located between the mounting sections of the two stationary spring terminals.

13. The relay according to claim 11, characterized in that, The first end of the movable spring is bridged with two movable contacts, and the first end of the movable spring is also provided with a conductive element, and both movable contacts are connected to the conductive element.

14. The relay according to claim 9, characterized in that, Two insulating baffles are provided, and the two insulating baffles correspond one-to-one with the two slots respectively; The coil frame also includes a connecting part, which is disposed opposite to the flange. The opposite sides of the connecting part are respectively connected to the two insulating baffles. The connecting part and the two insulating baffles form a receiving groove, and the stationary contact and the moving contact are both disposed in the receiving groove.

15. The relay according to claim 14, characterized in that, The connecting part is provided with a positioning rib on the side facing the flange. The positioning rib is integrally formed with the connecting part and is positioned and engaged with the first end of the moving spring.

16. The relay according to any one of claims 6 to 15, characterized in that, The relay also includes a housing and a cover. The housing has a receiving cavity and an opening communicating with the receiving cavity. The coil frame and the stationary spring terminal are disposed in the receiving cavity. The cover is disposed in the opening and has a through hole. One end of the stationary spring terminal passes through the through hole. The gap between the lead-out pin and the wall of the through hole is smaller than the gap between the stationary spring terminal and the side wall of the slot. The lead-out pin is fixed to the wall of the through hole with adhesive.

Images