A magnetic latching relay with a guiding structure

Abstract

This utility model discloses a magnetic latching relay with a guiding structure, comprising: a housing with a receiving cavity; a moving contact mechanism housed in the receiving cavity, the moving contact mechanism including a first bracket, a second bracket, and a second elastic element, one end of the first bracket cooperating and linked with a magnetic circuit mechanism, the magnetic circuit mechanism driving the first bracket to reciprocate along a first direction, a guiding structure provided between the first bracket and the inner wall of the housing; a moving contact assembly fixed on the second bracket; the second elastic element located between the first bracket and the second bracket; a stationary contact assembly housed in the receiving cavity, the stationary contact assembly cooperating with the moving contact assembly; the first elastic element providing auxiliary force to the first bracket; with this structure, the first bracket does not need to have a through hole, thus ensuring the strength of the first bracket; secondly, the outer side wall of the first bracket cooperates with the inner side wall of the housing to form a guiding structure, making the guidance more stable; and it also reduces one component, making installation more convenient.

Description

Technical Field

[0001] This utility model relates to the field of relay technology, specifically to a magnetic latching relay with a guiding structure. Background Technology

[0002] Magnetic latching relays automatically connect and disconnect circuits. They are suitable for many products, such as electricity meters and smart home devices.

[0003] Existing magnetic latching relays include a bracket with a fixed moving contact component and a guide member. The guide member passes through the bracket, and the bracket slides along the guide member to create a guiding effect. However, this structure has two problems: firstly, the bracket needs to have a through hole that mates with the guide member, which reduces the overall strength of the bracket; secondly, the matching degree between the through hole and the guide member results in poor stability of the bracket's sliding motion. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is how to improve the guiding effect. To this end, a magnetic latching relay with a guiding structure includes:

[0005] The housing has a receiving cavity;

[0006] A movable contact mechanism is housed in the receiving cavity. The movable contact mechanism includes a first support, a second support, and a second elastic element. One end of the first support is linked with a magnetic circuit mechanism, which drives the first support to reciprocate along a first direction. A guide structure is provided between the first support and the inner wall of the housing. The second support has a movable contact component fixed to it. The second elastic element is located between the first support and the second support.

[0007] A stationary touch component, wherein the stationary touch component is housed in the receiving cavity, and the stationary touch component cooperates with the moving touch component;

[0008] The first elastic element provides an auxiliary force to the first support.

[0009] One of the first bracket and the inner top surface of the housing is provided with a first slider, and the other of the first bracket and the inner top surface of the housing is provided with a slide rail that cooperates with the first slider; or, one of the first bracket and the inner bottom surface of the housing is provided with a first slider, and the other of the first bracket and the inner bottom surface of the housing is provided with a slide rail that cooperates with the first slider; or, a guide structure is provided between the first bracket and both the inner top surface and the inner bottom surface of the housing, and the guide structure includes a first slider and a slide rail.

[0010] The inner wall of the housing is provided with a guide protrusion, and the side of the first bracket cooperates with the guide protrusion.

[0011] One of the first bracket and the second bracket is provided with a first buckle, and the other of the first bracket and the second bracket is provided with a first slot that cooperates with the first buckle.

[0012] The moving contact assembly includes at least two moving contact bridges, with moving contacts fixed at both ends of each moving contact bridge; adjacent moving contact bridges are electrically connected, one end of the second elastic member abuts against the first bracket, and the other end of the second elastic member abuts against the moving contact bridge.

[0013] The first bracket is provided with a positioning post, and the second elastic element is provided with a positioning hole that cooperates with the positioning post.

[0014] The moving contact assembly is fixed with a first magnetic conductive element, and the inner wall of the housing is fixed with a second magnetic conductive element that cooperates with the first magnetic conductive element.

[0015] The second bracket is provided with a fixing groove, and the first magnetic conductive element is provided with an extension portion, which extends through the fixing groove toward the second magnetic conductive element.

[0016] The housing is provided with an energy storage cavity, the first elastic element is housed in the energy storage cavity, and the first elastic element abuts against the end of the first bracket away from the second bracket.

[0017] The magnetic circuit mechanism includes a coil assembly, an armature assembly, and a connecting structure. The coil assembly and the armature assembly cooperate to generate a swinging force that drives the first support to move. The connecting structure includes a transmission groove disposed at one end of the first support and a push rod disposed on the armature assembly and inserted into the transmission groove. A connecting shaft that is slidably connected to the transmission groove is formed on the push rod.

[0018] The technical solution of this utility model has the following advantages:

[0019] 1. The present invention provides a magnetic latching relay with a guiding structure. With this structure, the first bracket does not need to have a through hole, thus ensuring the strength of the first bracket. Secondly, the outer side wall of the first bracket and the inner side wall of the housing cooperate to form a guiding structure, making the guidance more stable. It also reduces one component, making installation more convenient.

[0020] 2. This utility model provides a magnetic latching relay with a guiding structure. The cooperation between the first slider and the slide rail improves the stability of the sliding of the first bracket. Alternatively, a side-guided structure can also be used.

[0021] 3. The present invention provides a magnetic latching relay with a guiding structure. The setting of the guiding protrusion forms a side guiding effect, which provides an auxiliary and further improves the stability of the sliding of the first support.

[0022] 4. The magnetic latching relay with a guiding structure provided by this utility model makes it easier to connect and fix the first bracket and the second bracket by cooperating between the first buckle and the first slot. In addition, other fixing methods can be used between the two, such as bolt connection or welding connection.

[0023] 5. The present invention provides a magnetic latching relay with a guiding structure. By moving the moving contact assembly up and down, the distance between the moving contact assembly and the stationary contact assembly is increased. Secondly, the parallel connection effect formed by multiple moving contact bridges reduces the contact resistance. The setting of the second elastic element applies pressure to the contact, resulting in a better electrical connection effect during the electrical connection process.

[0024] 6. The present invention provides a magnetic latching relay with a guide structure. The positioning post enables the second elastic element to achieve a better fixing effect. In this embodiment, the second elastic element is specifically a spring sheet structure with a central bulge and both ends extending obliquely downward. The positioning hole is set at the bulge position of the second elastic element, and both ends of the second elastic element respectively cooperate with the two moving contacts of the same moving contact bridge.

[0025] 7. The present invention provides a magnetic latching relay with a guiding structure, wherein the first magnetic conductive element and the second magnetic conductive element cooperate to form an attraction effect. When the moving contact assembly and the stationary contact assembly are connected, the current flows through the first magnetic conductive element, and the first magnetic conductive element generates a magnetic field, forming an attraction effect with the second magnetic conductive element.

[0026] 8. The present invention provides a magnetic latching relay with a guiding structure. The setting of the fixing groove better realizes the fixing of the first magnetic conductive element, and the extension part here abuts against the side wall of the fixing groove.

[0027] 9. The present invention provides a magnetic latching relay with a guiding structure, wherein the first elastic element provides auxiliary power when the contacts are closed, thereby accelerating the closing process. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the magnetic latching relay with a guiding structure provided by this utility model;

[0030] Figure 2A cross-sectional view of the magnetic latching relay with a guiding structure provided by this utility model;

[0031] Figure 3 A cross-sectional view from another angle of the magnetic latching relay with a guiding structure provided by this utility model;

[0032] Figure 4 A partial structural schematic diagram of the magnetic latching relay with a guiding structure provided by this utility model;

[0033] Figure 5 A schematic diagram of the structure of the first support, the second support, and the movable contact bridge provided by this utility model;

[0034] Figure 6 for Figure 5 A sectional view.

[0035] Explanation of reference numerals in the attached figures:

[0036] 11. Housing; 12. First bracket; 13. Second bracket; 14. Second elastic element; 15. Stationary contact piece; 16. First elastic element; 17. First slider; 18. Slide rail; 19. First buckle; 20. First slot; 21. Moving contact bridge; 22. First magnetic conductor; 23. Second magnetic conductor; 24. Coil assembly; 25. Armature assembly; 26. Push rod; 27. Shielding cover; 111. Receiving cavity; 112. Guide protrusion; 113. Energy storage cavity; 114. Heat dissipation hole; 121. Positioning post; 122. Transmission groove; 131. Fixing groove; 141. Positioning hole; 211. Moving contact; 221. Extension; 261. Connecting shaft. Detailed Implementation

[0037] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0038] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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 utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0041] Example 1

[0042] This embodiment provides a magnetic latching relay with a guiding structure, as shown in the attached figure. Figures 1-6 As shown, it includes:

[0043] The housing 11 has a receiving cavity 111.

[0044] The moving contact mechanism is housed in the receiving cavity 111. The moving contact mechanism includes a first support 12, a second support 13, and a second elastic element 14. One end of the first support 12 is linked to a magnetic circuit mechanism, which drives the first support 12 to reciprocate along a first direction. In this embodiment, the first direction specifically refers to forward and backward movement in the horizontal direction. A guide structure is provided between the first support 12 and the inner wall of the housing 11. The second support 13 is fixed with the moving contact assembly, meaning that the second support 13 drives the moving contact assembly to move. The second elastic element 14 is located between the first support 12 and the second support 13, and is used to apply pressure to the contact, making the connection between the moving contact assembly and the stationary contact assembly more stable.

[0045] A stationary contact assembly is housed in a receiving cavity 111. The stationary contact assembly includes two stationary contact pieces 15, with portions of the two stationary contact pieces 15 located within the receiving cavity 111 and the remainders extending through the housing 11 to the outside. When the moving contact assembly is engaged with the stationary contact assembly, the moving contact assembly connects the two stationary contact pieces 15, forming an electrical connection between them. Conversely, when the moving contact assembly does not connect the two stationary contact pieces 15, the two stationary contact pieces 15 are disconnected, and there is no electrical connection between them.

[0046] The first elastic element 16 provides auxiliary force to the first bracket 12 and assists in contact closure. With this structure, the first bracket 12 does not require a through hole, ensuring its strength. Furthermore, the outer wall of the first bracket 12 engages with the inner wall of the housing 11 to form a guiding structure, making guidance more stable. Additionally, it reduces the number of components, making installation more convenient.

[0047] Specifically, as shown in the attached document Figures 2-6 As shown, one of the inner top surfaces of the first support 12 and the housing 11 is provided with a first slider 17, and the other of the inner top surfaces of the first support 12 and the housing 11 is provided with a slide rail 18 that cooperates with the first slider 17. For example, the top surface of the first support 12 is provided with the first slider 17, and the inner top surface of the housing 11 is provided with the slide rail 18, and the first slider 17 slides along the slide rail 18. The number of first sliders 17 and slide rails 18 can be adjusted according to actual needs; there can be one set, two sets, three sets, or more. Alternatively, one of the inner bottom surfaces of the first support 12 and the housing 11 is provided with the first slider 17, and the other of the inner bottom surfaces of the first support 12 and the housing 11 is provided with a slide rail 18 that cooperates with the first slider 17. For example, the bottom surface of the first support 12 is provided with the first slider 17, and the inner bottom surface of the housing 11 is provided with the slide rail 18, and the first slider 17 slides along the slide rail 18. The number of first sliders 17 and slide rails 18 can be adjusted according to actual needs; there can be one set, two sets, three sets, or more. Alternatively, guide structures can be provided between the first support 12 and the inner top and bottom surfaces of the housing 11. These guide structures include a first slider 17 and a slide rail 18. For example, the first support 12 has a first slider 17 on both its top and bottom surfaces, and the housing 11 has a slide rail 18 on both its inner top and bottom surfaces, creating a sliding guide effect on both the upper and lower surfaces, further improving sliding stability. The cooperation between the first slider 17 and the slide rail 18 enhances the sliding stability of the first support 12. Alternatively, a side-guided structure can also be used.

[0048] Specifically, as shown in the attached document Figures 2-6 As shown, the inner wall of the housing 11 is provided with a guide protrusion 112, and the side of the first bracket 12 cooperates with the guide protrusion 112. The guide protrusion 112 provides a lateral guiding effect, acting as an aid to further improve the sliding stability of the first bracket 12. The number of guide protrusions 112 can be adjusted according to actual needs. In this embodiment, the cross-section of the guide protrusion 112 is semi-circular, and its arc surface faces the side of the first bracket 12.

[0049] Specifically, as shown in the attached document Figures 2-6As shown, one of the first bracket 12 and the second bracket 13 is provided with a first buckle 19, and the other of the first bracket 12 and the second bracket 13 is provided with a first slot 20 that cooperates with the first buckle 19. The cooperation between the first buckle 19 and the first slot 20 makes it easier to connect and fix the first bracket 12 and the second bracket 13. In addition, other fixing methods can be used between the two, such as bolt connection or welding.

[0050] Specifically, as shown in the attached document Figures 2-6 As shown, the moving contact assembly includes at least two moving contact bridges 21, with moving contacts 211 fixed at both ends of each moving contact bridge 21. Adjacent moving contact bridges 21 are electrically connected, specifically in parallel. One end of the second elastic member 14 abuts against the first bracket 12, and the other end abuts against the moving contact bridge 21. The up-and-down movement of the moving contact assembly increases the distance between the moving contact assembly and the stationary contact assembly. Furthermore, the parallel connection of multiple moving contact bridges 21 reduces contact resistance. The second elastic member 14 provides pressure to the contacts, resulting in a better electrical connection during the electrical connection process. Similarly, one stationary contact piece 15 is electrically connected to the moving contact 211 located at the left end of the two moving contact bridges 21, and the other stationary contact piece 15 is electrically connected to the moving contact 211 located at the right end of the two moving contact bridges 21.

[0051] Specifically, as shown in the attached document Figure 6 As shown, the first bracket 12 is provided with a positioning post 121, and the second elastic member 14 is provided with a positioning hole 141 that cooperates with the positioning post 121. The positioning post 121 enables the second elastic member 14 to achieve a better fixing effect. In this embodiment, the second elastic member 14 is specifically a spring sheet structure, which is raised in the middle and extends obliquely downward at both ends. The positioning hole 141 is provided at the raised position of the second elastic member 14, and the two ends of the second elastic member 14 respectively cooperate with the two moving contacts 211 of the same moving contact bridge 21.

[0052] Specifically, as shown in the attached document Figures 2-4 As shown, the moving contact assembly is fixed with a first magnetic conductive element 22, and the inner wall of the housing 11 is fixed with a second magnetic conductive element 23 that cooperates with the first magnetic conductive element 22. The first magnetic conductive element 22 and the second magnetic conductive element 23 cooperate to form an attraction effect. When the moving contact assembly is connected to the stationary contact assembly, current flows through the first magnetic conductive element 22, and the first magnetic conductive element 22 generates a magnetic field, forming an attraction effect with the second magnetic conductive element 23. In this embodiment, there are two first magnetic conductive elements 22, and each of the two first magnetic conductive elements 22 corresponds to one moving contact bridge 21. Here, the first magnetic conductive element 22 and the moving contact bridge 21 are riveted together. There is one second magnetic conductive element 23, and one second magnetic conductive element 23 corresponds to two first magnetic conductive elements 22.

[0053] Specifically, the second bracket 13 is provided with a fixing groove 131, and the first magnetic conductive element 22 is provided with an extension 221, which extends through the fixing groove 131 toward the second magnetic conductive element 23. The fixing groove 131 is provided to better fix the first magnetic conductive element 22, and the extension 221 abuts against the side wall of the fixing groove 131. There are two fixing grooves 131.

[0054] Specifically, as shown in the attached document Figures 2-4 As shown, the housing 11 has an energy storage cavity 113, and a first elastic member 16 is housed in the energy storage cavity 113. The first elastic member 16 abuts against the end of the first support 12 away from the second support 13. The first elastic member 16 provides auxiliary power when the contacts close, accelerating the closing process.

[0055] Specifically, during the installation process, the first bracket 12, the second bracket 13, the second elastic element 14, and the moving contact component are formed into a module and then installed into the housing 11. The modular installation method achieves the effect of quick installation and fixation, making the installation simpler, reducing the assembly difficulty, and improving the processing effect.

[0056] Specifically, the first bracket 12 is made of plastic, the first bracket 12 is suspended, and there is no connection between the first bracket 12 and the inner wall of the housing 11.

[0057] Specifically, the second bracket 13 is made of conductive metal, and the second bracket 13 is electrically connected to the two moving contact bridges 21.

[0058] Specifically, as shown in the attached document Figures 2-4 As shown, the magnetic circuit mechanism includes a coil assembly 24, an armature assembly 25, and a connecting structure. The coil assembly 24 and the armature assembly 25 cooperate to generate a swinging force that drives the first support 12 to move. The connecting structure includes a transmission groove 122 disposed at one end of the first support 12, and a push rod 26 disposed on the armature assembly 25 and inserted into the transmission groove 122. A connecting shaft 261 slidably connected in the transmission groove 122 is formed on the push rod 26. By directly cooperating with the transmission groove 122 through the push rod 26, the distance between the coil assembly 24 and the first support 12 is shortened, thereby reducing the width of the entire magnetic latching relay with a guide structure, thus meeting the installation requirements of the magnetic latching relay with a guide structure in the energy meter.

[0059] Specifically, the transmission groove 122 has an opening on the side facing the armature assembly 25 and an opening on the front side, making installation more convenient.

[0060] Specifically, as shown in the attached document Figure 1 As shown, it also includes a shielding cover 27, which is fitted onto the outer surface of the housing 11 to form a signal shielding and protection effect to prevent interference.

[0061] Specifically, the housing 11 is provided with heat dissipation holes 114, which penetrate through the front and rear sides of the housing 11. The position and size of the heat dissipation holes 114 can be adjusted according to actual needs.

[0062] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A magnetic latching relay with a guiding structure, characterized in that, include: A housing (11) having a receiving cavity (111); A movable contact mechanism is housed in the receiving cavity (111). The movable contact mechanism includes a first support (12), a second support (13), and a second elastic element (14). One end of the first support (12) is linked with a magnetic circuit mechanism, which drives the first support (12) to reciprocate along a first direction. A guide structure is provided between the first support (12) and the inner wall of the housing (11). The second support (13) is fixed with a movable contact assembly. The second elastic element (14) is located between the first support (12) and the second support (13). A stationary touch assembly, wherein the stationary touch assembly is housed in the receiving cavity (111), and the stationary touch assembly cooperates with the moving touch assembly; The first elastic element (16) provides an auxiliary force to the first bracket (12).

2. The magnetic latching relay with a guiding structure according to claim 1, characterized in that, One of the inner top surfaces of the first bracket (12) and the housing (11) is provided with a first slider (17), and the other of the inner top surfaces of the first bracket (12) and the housing (11) is provided with a slide rail (18) that cooperates with the first slider (17); or, one of the inner bottom surfaces of the first bracket (12) and the housing (11) is provided with a first slider (17), and the other of the inner bottom surfaces of the first bracket (12) and the housing (11) is provided with a slide rail (18) that cooperates with the first slider (17); or, a guide structure is provided between the first bracket (12) and the inner top surface and inner bottom surface of the housing (11), and the guide structure includes the first slider (17) and the slide rail (18).

3. The magnetic latching relay with a guiding structure according to claim 1, characterized in that, The inner wall of the housing (11) is provided with a guide protrusion (112), and the side of the first bracket (12) cooperates with the guide protrusion (112).

4. The magnetic latching relay with a guiding structure according to claim 1, characterized in that, One of the first bracket (12) and the second bracket (13) is provided with a first buckle (19), and the other of the first bracket (12) and the second bracket (13) is provided with a first slot (20) that cooperates with the first buckle (19).

5. The magnetic latching relay with a guiding structure according to claim 1, characterized in that, The moving contact assembly includes at least two moving contact bridges (21), and moving contacts (211) are fixed at both ends of each moving contact bridge (21). Two adjacent moving contact bridges (21) are electrically connected. One end of the second elastic member (14) abuts against the first bracket (12), and the other end of the second elastic member (14) abuts against the moving contact bridge (21).

6. The magnetic latching relay with a guiding structure according to claim 5, characterized in that, The first bracket (12) is provided with a positioning post (121), and the second elastic member (14) is provided with a positioning hole (141) that cooperates with the positioning post (121).

7. The magnetic latching relay with a guiding structure according to claim 1, characterized in that, The moving contact assembly is fixed with a first magnetic conductive element (22), and the inner wall of the housing (11) is fixed with a second magnetic conductive element (23) that cooperates with the first magnetic conductive element (22).

8. The magnetic latching relay with a guiding structure according to claim 7, characterized in that, The second bracket (13) is provided with a fixing groove (131), and the first magnetic conductor (22) is provided with an extension (221), which extends through the fixing groove (131) toward the second magnetic conductor (23).

9. The magnetic latching relay with a guiding structure according to claim 1, characterized in that, The housing (11) is provided with an energy storage cavity (113), and the first elastic member (16) is housed in the energy storage cavity (113). The first elastic member (16) abuts against the end of the first bracket (12) away from the second bracket (13).

10. The magnetic latching relay with a guiding structure according to claim 1, characterized in that, The magnetic circuit mechanism includes a coil assembly (24), an armature assembly (25), and a connecting structure. The coil assembly (24) and the armature assembly (25) cooperate to generate a swinging force that drives the first support (12) to move. The connecting structure includes a transmission groove (122) disposed at one end of the first support (12) and a push rod (26) disposed on the armature assembly (25) and inserted into the transmission groove (122). A connecting shaft (261) is formed on the push rod (26) and slidably connected in the transmission groove (122).

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