Sealed relay

Abstract

The utility model discloses a sealed relay comprising a housing, one end of the housing is an open end, the side wall of the housing is provided with a second terminal groove penetrating through the inside and the outside, and the second terminal groove penetrates to the end face of the open end; the base is provided with a first terminal and a second terminal, the shell is arranged outside the base in a covering mode, the second terminal is embedded in the second terminal groove and led out from the side wall of the shell, and the first terminal is arranged on the base in a penetrating mode and led out from the direction of the opening end of the shell; a glue injection groove is formed between the opening end of the shell and the outer side face of the base, the first terminal is located at the glue injection groove, and the glue injection groove is communicated with the second terminal groove. In the structure, only one-time glue injection is needed, the glue sealing efficiency and the sealing performance can be improved, and the production cost can be reduced.

Description

Technical Field

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

[0002] In existing relays with quick-connect terminals, the quick-connect terminals and PCB terminals are typically led out from the side and bottom, respectively. Because different terminals are led out from different sides, the common sealing method involves applying adhesive to the side and bottom separately, requiring two sealing operations: first, sealing the quick-connect terminal joints from the side, and then, after curing, sealing the PCB terminal joints and the joint between the housing and the base from the bottom. This process has the following problems:

[0003] (1) Low production efficiency; two glue injections lead to a longer production cycle and reduced efficiency.

[0004] (2) Sealing risk: Micro-cracks may occur due to adhesive shrinkage or poor interfacial bonding during multiple sealing processes, which may affect the overall sealing effect.

[0005] (3) Increased costs: The additional sealing process leads to increased labor costs. Utility Model Content

[0006] This utility model discloses a sealing relay that only requires one gluing process, which can improve sealing efficiency and sealing performance, and reduce production costs.

[0007] To achieve the above objectives, this utility model discloses a sealed relay, comprising:

[0008] The outer casing has an open end at one end, and a second terminal groove that extends through the inside and outside of the side wall of the outer casing, extending to the end face of the open end.

[0009] The base has an outer shell covering it. An injection groove is formed between the open end of the outer shell and the outer side of the base. A first terminal groove is also provided on the outer side of the base. The first terminal groove is located within the coverage area of ​​the injection groove, and the injection groove is connected to the second terminal groove.

[0010] The first terminal passes through the first terminal slot into the base and is led out from the opening end of the housing;

[0011] The second terminal is disposed on the base, embedded in the second terminal slot and led out from the side wall of the housing.

[0012] As an optional implementation, a boss is provided in the middle of the outer side of the base, the first terminal groove is located on the periphery of the boss, and the inner side of the opening end of the housing and the periphery of the boss form an injection groove.

[0013] As an alternative implementation, the periphery of the boss is inclined.

[0014] As an alternative implementation, a slot is integrally formed on the side wall of the housing, and the second terminal slot is disposed through the slot.

[0015] As an optional implementation, the slot has opposing inner and outer sidewalls, as well as opposing left and right sidewalls. The second terminal slot penetrates the inner and outer sidewalls of the slot. When the second terminal is embedded in the second terminal slot and passes through the inner and outer sidewalls of the slot, a joint gap is formed between the second terminal and the slot openings of the inner and outer sidewalls of the slot. An injection gap is also formed between the second terminal and the left and right sidewalls of the slot. The injection gap is larger than the joint gap and connects the injection groove and the joint gap.

[0016] As an optional implementation, the glue injection gap includes a first glue injection section and a second glue injection section. One end of the first glue injection section extends through to the end face of the opening end, and the inner sidewall of the groove seat is provided with a notch for connecting the glue injection groove and one end of the first glue injection section. The other end of the first glue injection section is connected to the second glue injection section. Along the thickness direction of the second terminal, the thickness of the first glue injection section is greater than the thickness of the second glue injection section.

[0017] As an optional implementation, the vertical surface of the connection notch of the first injection section is the first guide slope.

[0018] As an optional implementation, a second guide slope is formed at the connection between the first injection section and the second injection section.

[0019] During glue injection, the two guide ramps can smoothly guide the glue in the glue injection tank to the two glue injection sections.

[0020] As an optional implementation, the portion of the second terminal embedded in the second terminal slot during assembly has a terminal bevel. The side of the terminal bevel closest to the glue injection slot is lower than the bottom surface of the glue injection slot. This setting increases the communication area between the slot and the glue injection slot, which facilitates the flow of glue from the glue injection slot into the first glue section. The side of the terminal bevel away from the glue injection slot is flush with the opening end of the housing. This setting allows the width of the second terminal to fill the groove height of the outer wall of the slot during glue injection, thus preventing glue leakage.

[0021] As an optional implementation, the second terminal is a quick-connect terminal or a PCB terminal.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] This invention relates to a sealed relay that connects the glue injection groove to the second terminal groove, thereby connecting the seams between the outer shell and the base, the second terminal and the outer shell, and the first terminal and the base in series to form a continuous glue injection channel. This allows the glue injection process to be completed in one step, utilizing the fluidity of the glue to cover all seams at once, simplifying the glue injection process, improving the product's sealing performance, and reducing production costs. Other beneficial effects are shown in the specific embodiments. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a 3D schematic diagram of a relay.

[0026] Figure 2 This is a magnified view of the slot during the assembly of the second terminal.

[0027] Figure 3 This is a magnified view of the slot when the second terminal is not assembled, from a three-dimensional perspective.

[0028] Figure 4 This is a magnified view of the slot during the assembly of the second terminal.

[0029] Wherein: 1. First terminal; 2. Second terminal; 21. Terminal bevel; 3. Base; 31. First terminal slot; 32. Boss; 4. Housing; 41. Second terminal slot; 411. Joint gap; 412. Glue injection gap; 4121. First glue injection section; 4122. Second glue injection section; 4123. First guide bevel; 4124. Second guide bevel; 42. Slot seat; 43. Notch; 5. Glue injection groove. Detailed Implementation

[0030] 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 only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0032] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0033] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0034] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0035] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0036] See Figure 1 and Figure 2 This application provides a sealed relay, which includes a housing 4 and a base 3. The base 3 may be provided with a first terminal 1, a second terminal 2, and an electromagnetic component. The first terminal 11 is a PCB terminal and there are two of it. The second terminal 22 is a quick-connect terminal and there are two of it. The number of terminals can be changed according to design requirements. One end of the housing 4 is an open end; specifically, the bottom surface of the housing 4 can be an open end. Figure 1When referring to the indicated direction, since the opening end of the outer casing 4 needs to be placed upwards during glue injection, the outer casing 4 is flipped over so that its bottom surface faces upwards. The outer casing 4 covers the base 3, completely enclosing the electromagnetic components. A glue injection groove 5 is formed between the opening end of the outer casing 4 and the outer side surface of the base 3. A first terminal groove 31 is provided on the base 3, located within the coverage area of ​​the glue injection groove 5. A second terminal groove 41 penetrating through the inside and outside is provided on the side wall of the outer casing 4, extending to the end face of the opening end. The glue injection groove 5 communicates with the second terminal groove 41. The first terminal 1 passes through the first terminal groove 31 into the base 3 and is led out from the opening end of the outer casing 4. The second terminal 2 is embedded in the second terminal groove 41 and is led out from the side wall of the outer casing 4. It can be understood that the second terminal groove 41 needs to penetrate on three sides to connect the inside and outside of the outer casing 4 and to allow the second terminal 2 to be embedded into the second terminal groove 41 from the opening end of the outer casing 4.

[0037] In the above scheme, the electromagnetic component, the first terminal 1, and the second terminal 2 are first fixed on the base 3. Then, the base 3 is installed into the housing 4 from the open end of the housing 4, so that the second terminal 2 is embedded in the second terminal slot 41, forming a glue injection groove 5 between the base 3 and the housing 4. At this time, since the first terminal slot 31 is located in the coverage area of ​​the glue injection groove 5, and the glue injection groove 5 is also connected to the second terminal slot 41, the joints between the housing 4 and the base 3, the joints between the second terminal 2 and the housing 4, and the joints between the first terminal 1 and the base 3 can be connected in series to form a continuous glue injection channel. When injecting glue, the open end of the housing 4 is placed upwards. After the glue is injected into the glue injection groove 5, the glue can flow and fill all the terminal slots and joints. After baking and curing, the product can be sealed. The whole process only requires one sealing and curing, which improves production efficiency, reduces labor costs and equipment occupation, and also improves the sealing performance of the product.

[0038] See Figure 1 A boss 32 is provided on the outer surface of the base 3. The periphery of the boss 32 is inclined and is located in the middle of the outer surface of the base 3. That is, there is a distance between the periphery of the boss 32 and the periphery of the outer surface of the base 3. The inner side of the opening end of the outer shell 4 and the periphery of the boss 32 form a glue injection groove 5. At this time, the glue injection groove 5 is rectangular, which helps to reduce the amount of glue used. The first terminal groove 31 is located in the coverage area of ​​the glue injection groove 5. That is, the first terminal groove 31 is exactly set in the area of ​​the glue injection groove 5 formed by the inner wall of the opening end of the outer shell 4 and the periphery of the boss 32. During glue injection, the glue flows in a ring within the glue injection groove 5, thereby filling the joint between the periphery of the outer surface of the base 3 and the inner side of the opening end of the outer shell 4, as well as the joint of the first terminal 1 in the first terminal groove 31, to achieve glue coverage.

[0039] See Figure 2 and Figure 3In this embodiment, in order to control the overall thickness of the outer shell 4 and save its material, a slot 42 is provided on the side wall of the outer shell 4. The slot 42 is used to support the second terminal slot 41. Based on the number of second terminals 2, two slots 42 are provided at intervals. The slot 42 is integrally formed on the side wall of the outer shell 4, and each second terminal slot 41 is respectively provided through different slots 42.

[0040] Specifically, the slot 42 has an inner wall, an outer wall, a left wall, and a right wall. The inner wall and the outer wall of the slot 42 are opposite to each other, and the left wall and the right wall of the slot 42 are opposite to each other. The inner wall of the slot 42 is part of the outer wall of the outer shell 4. The left wall and the right wall of the slot 42 are perpendicularly connected to the outer wall of the outer shell 4 and protrude outward. The outer wall of the slot 42 is connected to the left wall and the right wall of the slot 42. In order to avoid glue leakage, the slot 42 must also have a bottom wall away from the opening end of the outer shell 4. The second terminal slot 41 is formed in the slot 42. The inner wall and the outer wall of the slot 42 are provided with slots, so that the second terminal slot 41 can pass through the inner wall and the outer wall of the slot 42.

[0041] When the second terminal 2 is embedded in the second terminal groove 41 and passes through the inner and outer walls of the groove seat 42, a joint gap 411 is formed between the groove openings of the second terminal 2 and the inner and outer walls of the groove seat 42, and an injection gap 412 is formed between the left and right side walls of the second terminal 2 and the groove seat 42. The injection gap 412 is larger than the joint gap 411 and connects the injection groove 5 and the joint gap 411. In this way, when the glue flows from the injection groove 5 to the second terminal groove 41, it first flows into the injection gap 412 and then into the joint gap 411. Since the injection gap 412 is larger, it can effectively store glue, while the joint gap 411 is relatively narrow and long. The above scheme can enable the glue to effectively and comprehensively penetrate into all parts of the joint gap 411, and can also reduce the static glue penetration time. During the curing process, the glue stored in the injection gap 412 can replenish the joint gap 411, avoiding micro-cracks in the glue of the joint gap 411 that affect the sealing performance.

[0042] See Figure 2 and Figure 3 In order to allow the glue to flow from the glue injection groove 5 into the glue injection gap 412, preferably, a notch 43 is provided on the inner side wall of the groove seat 42. The notch 43 is used to connect the glue injection groove 5 and the glue injection gap 412. Specifically, the bottom surface of the notch 43 is flush with the bottom surface of the glue injection groove 5.

[0043] To accelerate the flow of the adhesive, this embodiment also provides optimization solutions from the following angles:

[0044] (a) A segmented glue injection gap of 412 is adopted, see reference. Figure 3The glue injection gap 412 includes a first glue injection section 4121 and a second glue injection section 4122 that are connected. One end of the first glue injection section 4121 extends to the end face of the open end, and the other end of the first glue injection section 4121 connects to the second glue injection section 4122. Along the thickness direction of the second terminal 2, the thickness of the first glue injection section 4121 is greater than the thickness of the second glue injection section 4122. Specifically, ... Figure 3 When the direction shown is referenced, the upper end of the glue injection gap 412 is thick and the lower end is narrow, which is beneficial to increase the flow rate of glue in the glue injection gap 412; at this time, the notch 43 will be specifically used to connect the glue injection groove 5 and one end of the first glue injection section 4121.

[0045] (II) Setting up a guide slope, see [reference] Figure 3 The vertical surface of the notch 43 connecting the glue injection gap 412 is the first guide slope 4123, which allows the glue to flow from the glue injection groove 5 into the glue injection gap 412 more quickly.

[0046] (III) Optimize the structure of the second terminal 2, see [reference] Figure 2 The second terminal 2, when assembled, is provided with a terminal bevel 21 in the part embedded in the second terminal slot 41. The side of the terminal bevel 21 near the glue injection slot 5 is lower than the bottom surface of the glue injection slot 5. This setting increases the communication area between the slot seat 42 and the glue injection slot 5, which is conducive to the flow of glue from the glue injection slot 5 into the first glue section. The side of the terminal bevel 21 away from the glue injection slot 5 is flush with the opening end of the outer shell 4. This setting can fill the groove height of the outer wall of the slot seat 42 with the width of the second terminal 2 during glue injection, thus avoiding glue leakage.

[0047] The above three options can be used individually or in combination.

[0048] When Scheme 1 and Scheme 2 are used in combination, the above-mentioned facade is the facade of the connection notch 43 of the first glue injection section 4121. More preferably, regarding the setting of the guide slope, a second guide slope 4124 is formed at the connection between the first glue injection section 4121 and the second glue injection section 4122. In this way, during glue injection, the two guide slopes can guide the glue in the glue injection tank 5 to the two glue injection sections more smoothly.

[0049] The sealed relay disclosed in the embodiments of this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the fresh air module and fresh air air conditioner of this utility model and their core ideas. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A sealed relay, characterized in that, include: The outer casing (4) has an open end at one end, and a second terminal groove (41) penetrating through the inside and outside is provided on the side wall of the outer casing (4), and the second terminal groove (41) extends through to the end face of the open end; The base (3) is covered by the outer shell (4). An injection groove (5) is formed between the opening end of the outer shell (4) and the outer side surface of the base (3). A first terminal groove (31) is also provided on the outer side surface of the base (3). The first terminal groove (31) is located in the coverage area of ​​the injection groove (5), and the injection groove (5) is connected to the second terminal groove (41). The first terminal (1) passes through the first terminal slot (31) and is inserted into the base (3) and led out from the opening end of the outer shell (4); The second terminal (2) is disposed on the base (3), and is embedded in the second terminal slot (41) and led out from the side wall of the housing (4).

2. The sealed relay according to claim 1, characterized in that, A boss (32) is provided in the middle of the outer side of the base (3), and the first terminal groove (31) is located on the periphery of the boss (32). The inner side of the opening end of the outer shell (4) and the periphery of the boss (32) form the glue injection groove (5).

3. The sealed relay according to claim 2, characterized in that, The periphery of the boss (32) is inclined.

4. The sealed relay according to any one of claims 1 to 3, characterized in that, A slot (42) is integrally formed on the side wall of the outer shell (4), and the second terminal slot (41) is disposed through the slot (42).

5. The sealed relay according to claim 4, characterized in that, The slot (42) has opposing inner and outer sidewalls, as well as opposing left and right sidewalls. The second terminal slot (41) penetrates the inner and outer sidewalls of the slot (42). When the second terminal (2) is embedded in the second terminal slot (41) and passes through the inner and outer sidewalls of the slot (42), a joint gap (411) is formed between the slots of the second terminal (2) and the inner and outer sidewalls of the slot (42). An injection gap (412) is formed between the second terminal slot (41) and the left and right sidewalls of the slot (42). The injection gap (412) is larger than the joint gap (411). The injection gap (412) connects the injection groove (5) and the joint gap (411).

6. The sealed relay according to claim 5, characterized in that, The glue injection gap (412) includes a first glue injection section (4121) and a second glue injection section (4122). One end of the first glue injection section (4121) extends through to the end face of the opening end, and a notch (43) is provided on the inner side wall of the groove seat (42) for connecting the glue injection groove (5) and one end of the first glue injection section (4121). The other end of the first glue injection section (4121) is connected to the second glue injection section (4122). Along the thickness direction of the second terminal (2), the thickness of the first glue injection section (4121) is greater than the thickness of the second glue injection section (4122).

7. The sealed relay according to claim 6, characterized in that, The first injection section (4121) connects to the notch (43) on the first guide slope (4123).

8. The sealed relay according to claim 6, characterized in that, A second guide slope (4124) is formed at the connection between the first injection section (4121) and the second injection section (4122).

9. The sealed relay according to claim 5, characterized in that, The second terminal (2) is provided with a terminal bevel (21) in the part embedded in the second terminal slot (41) during assembly. The side of the terminal bevel (21) near the glue injection groove (5) is lower than the bottom surface of the glue injection groove (5), and the side away from the glue injection groove (5) is flush with the opening end of the outer shell (4).

10. The sealed relay according to any one of claims 1 to 3, characterized in that, The first terminal (1) is a PCB terminal, and the second terminal (2) is a quick-connect terminal.

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