A housing device for a relay module

Abstract

A kind of housing device of relay matching module, for installing the circuit board assembly of matching module, including two identical shells, recess is provided in the inside of shell, first buckle part is respectively provided in the two sides of shell along width direction, second buckle part is also provided in the two sides of shell along width direction, first buckle part and second buckle part on the same side of shell along shell length direction are distributed;Two shell insides are oppositely arranged, the first buckle part of one shell is buckled with the corresponding second buckle part on the other shell to realize the fixation of two shells, two recesses are enclosed to form the accommodating cavity for installing circuit board assembly.No independent base is needed, printed board assembly can be fixed by two identical shells symmetrical mutual matching, and mold investment can be reduced, cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of relays, and in particular to a housing device for a relay matching module. Background Technology

[0002] In industrial control systems, the control or suppression modules used with relays are crucial components, typically integrating printed circuit board assemblies to achieve their functions. For the housing structure of existing supporting modules, see [link to relevant documentation]. Figure 12 The common design adopts a combination of a base 1, a housing 2 and a printed circuit board assembly 3: the corresponding assembly of the base 1 and the housing 2 together form a space to fix the printed circuit board assembly 3 and ensure its stable operation in the industrial environment.

[0003] However, this traditional structure has obvious drawbacks: in order to adapt to control modules of different specifications, a base mold needs to be developed separately for each type of product. The base and the shell are not interchangeable, which increases the number of molds to be developed and directly increases the initial equipment investment cost. At the same time, as an independent part, the base needs to be purchased, stored, inspected and assembled separately, which adds to the management cost of the part throughout its entire life cycle and is not conducive to cost control in the mass production of products.

[0004] Therefore, there is a need to improve the existing relay module housing structure in terms of mold cost and parts management efficiency. There is an urgent need for an optimized solution that does not require an additional base, can fix the printed circuit board components through its own structure, and can reduce the number of molds and management costs. Utility Model Content

[0005] The main purpose of this utility model is to overcome the shortcomings of the existing technology, which requires additional bases and a large number of molds for the supporting module housing. It proposes a housing device for relay supporting modules that does not require an independent base and can fix the printed circuit board assembly by symmetrically matching two identical housings. It can also reduce mold investment and lower costs.

[0006] The present invention adopts the following technical solution:

[0007] A housing device for a relay matching module, used to install a circuit board assembly of the matching module, includes two identical housings. The inner side of the housing is provided with a groove. A first fastening part is provided on both sides of the housing along the width direction, and a second fastening part is also provided on both sides of the housing along the width direction. The first and second fastening parts on the same side of the housing along the width direction are distributed along the length direction of the housing. The inner sides of the two housings are arranged opposite each other. The first fastening part of one housing and the corresponding second fastening part on the other housing are engaged to fix the two housings. The two grooves enclose a receiving cavity for installing the circuit board assembly.

[0008] A first fastener is provided on each side of the shell in the width direction, and the two first fasteners are diagonally distributed in the length direction of the shell; a second fastener is provided on each side of the shell in the width direction, and the two second fasteners are diagonally distributed in the length direction of the shell.

[0009] The first fastening part is a protrusion extending along the height direction of the shell, and a buckle is provided at the end of the protrusion; the second fastening part is a recessed groove along the width direction of the shell, and the groove extends to the side of the shell opposite to the groove to form a step; when the two shells are fastened together, the protrusion of one shell is embedded in the corresponding groove of the other shell, and the buckle is fastened to the corresponding step.

[0010] The second fastening part is a protrusion extending along the height direction of the shell, and a buckle is provided at the end of the protrusion; the first fastening part is a recessed groove along the width direction of the shell, and the groove extends to the side of the shell opposite to the groove to form a step; when the two shells are fastened, the protrusion of one shell is embedded in the corresponding groove of the other shell, and the buckle is fastened to the corresponding step.

[0011] The inner side of the housing is provided with two first side plates and two second side plates for enclosing and forming a groove; the two first side plates extend along the length direction of the housing and are respectively located on both sides of the width direction of the housing; the two second side plates extend along the width direction of the housing and are respectively located on both sides of the length direction of the housing; a first fastener is formed on the first side plate and protrudes outward along the height direction of the housing; a second fastener is formed on the outer side of the first side plate.

[0012] Two baffles are provided on the opposite side of one of the second side plates and the other second side plate. The two baffles extend along the length of the shell and are spaced apart in the width direction. A plug-in groove is formed between the baffle and the adjacent first side plate. The plug-in groove connects to the groove and passes through the second side plate that connects the baffle. In the two shells, the two opposite plug-in grooves form a plug hole. The circuit board assembly is provided with two plug-in components, which are respectively embedded in the corresponding plug hole.

[0013] The baffle has a bent part in the area where the insertion slot and the groove are connected. The bent part is bent toward the adjacent first side plate, and a limiting groove is formed between the bent part and the first side plate. In the two shells, the two opposing limiting grooves form a limiting hole for limiting the insertion part.

[0014] The end of the baffle is located near the middle of the length of the housing; the circuit board assembly has a plate body, which abuts against the ends of the two baffles on the side near the insertion slot along the length of the housing.

[0015] A first positioning part is provided on the inner side of the housing near the width direction, and a second positioning part is also provided on the inner side of the housing near the width direction. The first positioning part and the second positioning part on the same side in the width direction of the housing are distributed along the length direction of the housing. The inner sides of the two housings are arranged opposite each other, and the first positioning part of one housing and the corresponding second positioning part on the other housing are engaged to achieve positioning of the two housings.

[0016] An elastic arm is provided on each side of the shell in the width direction. The elastic arm extends from the middle position of the shell in the length direction and is inclined outward relative to the width direction of the shell.

[0017] As can be seen from the above description of this utility model, compared with the prior art, this utility model has the following beneficial effects:

[0018] 1. In this utility model, two identical shells are used in a symmetrical and mutually matching structure, which can achieve assembly with only one set of molds, reducing the number of parts molds and reducing mold development costs; at the same time, the independent base parts are eliminated, reducing the management costs of parts procurement, warehousing and assembly, which is conducive to cost control in large-scale production.

[0019] 2. In this utility model, the structural design of the first and second fastening parts being diagonally distributed along the length of the shell makes the force on the two shells more uniform when they are fastened, avoiding loosening of the connection caused by force on one side, and improving the structural stability after assembly; at the same time, it reduces the assembly alignment deviation, improves the assembly efficiency, ensures the stability of the cavity size, and reliably limits the circuit board assembly.

[0020] 3. In this utility model, the first buckle and the second buckle adopt a combination of protrusion and groove, combined with the mechanical limiting structure of buckle head and step, which can effectively prevent the two shells from separating along the height direction, realize reliable buckle fixation, and improve connection strength and structural stability.

[0021] 4. In this utility model, both the first buckle and the second buckle are disposed on the first side plate and are integrally formed with the first side plate. There is no need to set up additional independent buckling structure components, which simplifies the overall shape of the shell and reduces the complexity of the mold. At the same time, the buckling force is transmitted by means of the structural strength of the first side plate, avoiding shell deformation caused by local stress concentration and improving structural reliability.

[0022] 5. In this utility model, a plug groove is formed by the baffle and the first side plate, and a bending part is provided in the area where the plug groove and the groove are connected to form a limiting groove. When the two shells are opposite each other, they form a limiting hole to limit the root of the plug and restrict its sway in the width direction, thereby improving the connection reliability and structural durability.

[0023] 6. In this utility model, the concave-convex cooperation between the first positioning part and the second positioning part can achieve rapid pre-positioning of the two shells before the buckle is engaged, thereby improving assembly efficiency. At the same time, it forms a dual cooperation of positioning and fixing with the buckle structure, enhancing the accuracy and reliability of the overall connection.

[0024] 7. In this utility model, the elastic arm is integrally formed with the first side plate. After being deformed by pressure during assembly, it can spring back to abut against external parts, thereby achieving elastic limiting and fixing of the matching module and improving the connection stability after assembly. Attached Figure Description

[0025] Figure 1 This is a structural diagram of the present utility model;

[0026] Figure 2 for Figure 1 Exploded view;

[0027] Figure 3 Shell structure Figure 1 ;

[0028] Figure 4 Shell structure Figure 2 ;

[0029] Figure 5 Diagram showing the mating of the circuit board assembly and the housing;

[0030] Figure 6 for Figure 5 The main view;

[0031] Figure 7 This is the front view of the casing;

[0032] Figure 8 for Figure 1 The main view;

[0033] Figure 9 for Figure 8 Sectional view of AA;

[0034] Figure 10 for Figure 8 BB section view;

[0035] Figure 11 for Figure 8 CC section view;

[0036] Figure 12 This is the existing structure diagram;

[0037] in:

[0038] 10. Housing; 11. First buckle; 12. Second buckle; 20. Groove; 21. First side plate; 22. Second side plate; 23. Extension; 30. Baffle; 31. Bending part; 32. Limiting groove; 32a. Limiting hole; 33. Insertion groove; 34. Insertion hole; 40. First positioning part; 41. Second positioning part; 50. Elastic arm; 60. Circuit board assembly; 61. Board body; 62. Connector; 70. Receiving cavity; 71. Buckle; 72. Step.

[0039] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Detailed Implementation

[0040] The present invention will be further described below through specific embodiments.

[0041] See Figures 1 to 11 A housing device for a relay supporting module, used to install a circuit board assembly of the supporting module, includes two identical housings 10. The inner side of each housing 10 has a groove 20. First fastening portions 11 are respectively provided on both sides of each housing 10 along its width direction, and second fastening portions 12 are also provided on both sides of each housing 10 along its width direction. The first fastening portions 11 and second fastening portions 12 on the same side of the width direction of the housing 10 are distributed along the length direction of the housing 10. The inner sides of the two housings 10 are arranged opposite each other and are centrally symmetrical. Due to the central symmetry, the first fastening portions 11 of one housing 10 and the corresponding second fastening portions 12 of the other housing 10 correspond one-to-one in space, thereby enabling the first fastening portions 11 of one housing 10 and the corresponding second fastening portions 12 of the other housing 10 to engage and fix the two housings 10. The two grooves 20 enclose a receiving cavity 70 for installing the circuit board assembly 60.

[0042] This embodiment employs a symmetrical, mutually matching structure of two identical housings 10, reducing the number of component molds required. Assembly can be achieved with only one set of housing 10 molds, thus lowering mold development costs. Simultaneously, eliminating the need for a separate base component reduces management costs in component procurement, warehousing, and assembly, facilitating cost control in large-scale production. Furthermore, the two housings 10 are quickly fixed together via a snap-fit ​​mechanism between the first snap-fit ​​part 11 and the second snap-fit ​​part 12, ensuring convenient assembly and stable connection. The receiving cavity 70 formed by the groove 20 reliably limits the circuit board assembly 60, balancing structural stability and ease of use, making it suitable for the efficient assembly requirements of relay modules in industrial control systems.

[0043] A first buckle 11 is provided on each side of the housing 10 in the width direction, and the two first buckles 11 are diagonally distributed in the length direction of the housing 10; a second buckle 12 is provided on each side of the housing 10 in the width direction, and the two second buckles 12 are diagonally distributed in the length direction of the housing 10.

[0044] In this embodiment, the diagonal distribution design is adapted to the centrally symmetrical assembly structure of the two housings 10: when the inner sides of the two housings 10 are fastened together, the first fastening part 11 of one housing 10 can be aligned with the second fastening part 12 of the other housing 10, and each fastening point is diagonally distributed along the length of the housing 10, which can make the force on the two housings 10 more uniform, avoid the connection loosening caused by unilateral force, and improve the structural stability after assembly; at the same time, the diagonal fastening method can reduce the alignment deviation during assembly, improve the assembly efficiency, ensure the size stability of the receiving cavity 70 formed by the groove 20, and reliably limit the circuit board assembly 60.

[0045] It should be noted that the number and distribution of the first latch 11 and the second latch 12 on the housing 10 are not unique and can be flexibly adjusted according to actual assembly strength requirements, housing 10 dimensions, or circuit board assembly 60 fixing stability requirements. For example, the number of latches can be increased to improve connection strength according to the load size, or the distribution spacing can be adjusted to adapt to different specifications of receiving cavities 70.

[0046] The first fastening part 11 is a protrusion extending along the height direction of the housing 10. This protrusion protrudes outward from the inner side of the housing 10, and a fastening head 71 is provided at its end. The fastening head 71 extends along the width direction of the housing 10 towards the recess 20. The second fastening part 12 is a recessed groove along the width direction of the housing 10. The groove extends to the side of the housing 10 opposite to the recess 20 and forms a step 72 on that side. When the two housings 10 are fastened together, the protrusion of one housing 10 is inserted into the corresponding groove of the other housing 10, and the fastening head 71 is fastened to the corresponding step 72. This structure, with its protrusion, recess, and the fastening head 71 engaging with the step 72, effectively prevents the two housings 10 from separating along the height direction through mechanical restraint.

[0047] It should be noted that the convex and concave forms of the first snap part 11 and the second snap part 12 can be flexibly interchanged according to the processing technology or assembly requirements of the housing 10, while their core mating logic remains consistent. For example, the second snap part 12 is a protrusion extending along the height direction of the housing 10, protruding outward from the inner side of the housing 10, and a snap head 71 is provided at the end of the protrusion. The snap head 71 extends inward along the width direction of the housing 10 toward the groove 20. The first snap part 11 is a groove recessed inward along the width direction of the housing 10, and the groove also extends to the side of the housing 10 opposite to the groove 20, forming a step 72 on the side of the housing 10 opposite to the groove 20. When the two housings 10 are fastened, the protrusion of one housing 10 is embedded in the corresponding groove of the other housing 10, and the snap head 71 is fastened to the corresponding step 72.

[0048] The inner side of the housing 10 is provided with two first side plates 21 and two second side plates 22, which are used to enclose and form a groove 20. The two first side plates 21 extend along the length of the housing 10 and are located on both sides of the width of the housing 10; the two second side plates 22 extend along the width of the housing 10 and are located on both sides of the length of the housing 10. A first fastening part 11 is formed on the first side plate 21 and protrudes outward along the height of the housing 10; a second fastening part 12 is formed on the outer side of the first side plate 21. The first fastening part 11 and the second fastening part 12 are respectively formed on the first side plate 21, eliminating the need for additional independent fastening components. This simplifies the overall shape of the housing 10, reduces mold complexity, and utilizes the structural strength of the first side plate 21 to transfer the fastening force, avoiding deformation of the housing 10 caused by localized stress concentration during fastening, thus improving structural reliability.

[0049] Two first side plates 21 of the same housing 10 are arranged opposite each other. One second side plate 22 is provided with two baffles 30 on the opposite side of the other second side plate 22, while the other second side plate 22 is not provided with baffles 30. The two baffles 30 extend along the length direction of the housing 10 and are spaced apart in the width direction. A insertion groove 33 is formed between the baffle 30 and the adjacent first side plate 21. One end of the insertion groove 33 is connected to the groove 20, and the other end is connected to the second side plate 22 of the baffle 30. When the two housings 10 are fastened together, the two insertion grooves 33 on the same side and opposite each other in the width direction of the housing 10 form a socket 34. The circuit board assembly 60 is provided with two plugs 62, and the two plugs 62 are respectively embedded in the corresponding sockets 34.

[0050] Furthermore, the first side plate connected to the baffle 30 is also provided with a wire-passing hole, which communicates with the groove 20 for the wires of the circuit board assembly 60 to pass through. The second side plate 22 not connected to the baffle 30 also has extensions 23 extending outward in the width direction on both sides.

[0051] In this embodiment, the baffle 30 has a bent portion 31 in the area where the insertion slot 33 and the groove 20 communicate. The bent portion 31 is bent toward the adjacent first side plate 21, and a limiting groove 32 is formed between the bent portion 31 and the adjacent first side plate 21. When the two housings 10 are fastened together, the two opposing limiting grooves 32 form a limiting hole 32a, which is used to limit the insertion piece 62 near the root of the circuit board assembly 60.

[0052] In the width direction of the housing 10, the size of the limiting groove 32 is smaller than the size of the insertion groove 33, which is used to limit the swaying of the insertion piece 62 in the width direction. On the other hand, the bent portion 31 extends from the end of the baffle 30 and forms an integrated structure with the baffle 30 and the first side plate 21. The fixing effect on the insertion piece 62 can be strengthened without the need for additional limiting components. This simplifies the shape of the housing 10 and enhances the local strength of the baffle 30 by means of the mechanical properties of the bent structure, reducing the extrusion deformation of the baffle 30 during the assembly of the insertion piece 62 and improving the durability of the overall structure.

[0053] Furthermore, the baffle 30 extends from the end of the second side plate 22 to a position near the middle of the length of the housing 10. The circuit board assembly 60 has a plate 61, which abuts against the ends of the two baffles 30 on the side near the insertion slot 33 along the length of the housing 10. Through the abutting engagement between the ends of the baffles 30 and the plate 61, the movement of the circuit board assembly 60 along the length of the housing 10 can be directly restricted; no additional dedicated length-direction limiting component is required, and the limitation can be achieved solely by the extended position of the ends of the baffles 30.

[0054] A first positioning part 40 is provided on the inner side of the housing 10 near the width direction, that is, the first positioning part 40 is located on the end face of the first side plate 21 along the height direction of the housing 10. A second positioning part 41 is also provided on the inner side of the housing 10 near the width direction, the second positioning part 41 is also located on the end face of the first side plate 21 along the height direction of the housing 10. The first positioning part 40 and the second positioning part 41 on the same side of the width direction of the housing 10 are distributed along the length direction of the housing 10. When the two housings 10 are fastened together, due to the central symmetry, the first positioning part 40 on the end face of the first side plate 21 of one housing 10 and the second positioning part 41 on the corresponding end face of the first side plate 21 of the other housing 10 engage in a concave-convex fit, realizing the positioning of the two housings 10. The positioning function of the concave-convex fit can guide the two housings 10 to quickly align before the fasteners are engaged, improving assembly efficiency. At the same time, it forms a dual engagement of positioning and fixing with the fasteners, enhancing the overall accuracy of the connection between the two housings 10. The end face of the extension 23 of the second side plate 22 in the height direction of the housing 10 may also be provided with a first positioning part 41 and a second positioning part 42 distributed along the width direction of the housing.

[0055] It should be noted that the number and specific distribution of the first positioning part 40 and the second positioning part 41 are not unique and can be flexibly adjusted according to the size of the housing 10 and the positioning accuracy requirements. For example, the number of positioning parts can be increased on the same first side plate 21 to improve the positioning stability, or their distribution spacing along the length direction can be adjusted to adapt to the cooperative cooperation of different buckle positions, so as to ensure that a reliable positioning effect can be achieved in the housing 10 structure of various specifications.

[0056] An elastic arm 50 is provided on each of the two sides of the housing 10 in the width direction. That is, the elastic arm 50 is provided on the outer side of the first side plate 21 in the width direction of the housing 10. The elastic arm 50 starts from the position of the first side plate 21 near the middle of the length direction of the housing 10 and extends to the end of the length direction of the housing 10, and is inclined outward relative to the width direction of the housing 10.

[0057] In this embodiment, the elastic arm 50 is designed to specifically adapt to the assembly requirements of the matching module and other components. The elastic arm 50 is integrally formed with the first side plate 21. The structural strength of the first side plate 21 provides stable support for the elastic arm 50, ensuring that it undergoes controllable deformation when it comes into contact with external components (such as mounting bases, sockets, etc.) during assembly, and can reliably rebound after deformation. The elastic force is used to achieve tight positioning and fixation of the matching module.

[0058] During the assembly of the matching modules, firstly, the board body 61 and the two connectors 62 of the circuit board assembly 60 are aligned with the groove 20 and the insertion slot 33 of a housing 10 and inserted. The side of the board body 61 closest to the insertion slot 33 along the length direction abuts against the end of the baffle 30, completing the initial positioning of the circuit board assembly 60 and the individual housing 10. Then, another identical housing 10 is taken, and its inner side is aligned with the inner side of the housing 10 on which the circuit board assembly 60 is installed. The positioning is achieved through the concave-convex cooperation of the first positioning part 40 and the second positioning part 41 on the end face of the first side plate 21 of the two housings 10. The device is pre-positioned and then pressed along the height direction of the housing 10, so that the first buckle 11 on the first side plate 21 of one housing 10 is embedded into the second buckle 12 on the corresponding side of the other housing 10 and is fixed by the buckle 71 and the step 72. At the same time, the bent parts 31 of the baffles 30 of the two housings 10 surround to form a limiting hole 32a to limit the root of the plug-in 62. Finally, the assembled whole device is pushed into the external mounting component. The elastic arms 50 on both sides of the width direction of the housing 10 are deformed by pressure and rebound to abut against the external component to achieve limiting and fixing, thus completing the assembly of the matching module.

[0059] In this embodiment, the type of circuit board assembly 60 adapted to the housing device is not limited to one type. It can be flexibly selected according to the actual functional requirements of the relay application scenario. Common types include suppression module circuit boards and control module circuit boards. Signal conversion module circuit boards and overload protection module circuit boards can also be adapted. Installation is completed through the same assembly process. The snap-fit ​​fixing and elastic arm 50 limiting structures of the housing device can provide a stable installation environment for circuit board assemblies 60 with different functions, effectively adapting to the diverse functional requirements of relay application scenarios and improving the versatility and applicability of the housing device.

[0060] In this utility model, the terms "first," "second," and "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. The use of terms such as "upper," "lower," "left," "right," "front," and "rear" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings and is only for the convenience of describing this utility model, and does not indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the scope of protection of this utility model. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0061] Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0062] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. A housing device for a relay supporting module, used for mounting the circuit board assembly of the supporting module, characterized in that, The device includes two identical housings. Each housing has a groove on its inner side. Each housing has a first fastening part on each side along its width direction and a second fastening part on each side along its width direction. The first and second fastening parts on the same side of the housing's width direction are distributed along the length direction of the housing. The two housings are arranged opposite each other on their inner sides. The first fastening part of one housing engages with the corresponding second fastening part on the other housing to fix the two housings. The two grooves enclose a cavity for mounting the circuit board assembly.

2. The housing device for a relay matching module as described in claim 1, characterized in that, A first buckle is provided on each side of the shell in the width direction, and the two first buckles are diagonally distributed in the length direction of the shell; a second buckle is provided on each side of the shell in the width direction, and the two second buckles are diagonally distributed in the length direction of the shell.

3. The housing device for a relay matching module as described in claim 1, characterized in that, The first fastening part is a protrusion extending along the height direction of the housing, and a buckle head is provided at the end of the protrusion; the second fastening part is a recessed groove along the width direction of the housing, and the groove extends to the side of the housing opposite to the groove to form a step; when the two housings are fastened together, the protrusion of one housing is embedded in the corresponding groove of the other housing, and the buckle head is fastened to the corresponding step.

4. The housing device for a relay matching module as described in claim 1, characterized in that, The second fastening part is a protrusion extending along the height direction of the housing, and a buckle head is provided at the end of the protrusion; the first fastening part is a recessed groove along the width direction of the housing, and the groove extends to the side of the housing opposite to the groove to form a step; when the two housings are fastened together, the protrusion of one housing is embedded in the corresponding groove of the other housing, and the buckle head is fastened to the corresponding step.

5. The housing device for a relay matching module as described in claim 1, characterized in that, The inner side of the housing is provided with two first side plates and two second side plates for enclosing the groove; the two first side plates extend along the length direction of the housing and are respectively located on both sides of the width direction of the housing; the two second side plates extend along the width direction of the housing and are respectively located on both sides of the length direction of the housing; the first buckle is formed on the first side plate and protrudes outward along the height direction of the housing; the second buckle is formed on the outer side of the first side plate.

6. The housing device for a relay matching module as described in claim 5, characterized in that, Two baffles are provided on the opposite side of one of the second side plates and the other second side plate. The two baffles extend along the length direction of the housing and are spaced apart in the width direction. A plug-in groove is formed between the baffle and the adjacent first side plate. The plug-in groove communicates with the groove and passes through the second side plate connected to the baffle. In the two housings, the two opposite plug-in grooves form a plug hole. The circuit board assembly is provided with two plug-in members, and the two plug-in members are respectively embedded in the corresponding plug hole.

7. The housing device for a relay matching module as described in claim 6, characterized in that, The baffle has a bent portion in the area where the insertion slot and the groove communicate. The bent portion bends toward the adjacent first side plate, and a limiting groove is formed between the bent portion and the first side plate. In the two housings, the two opposing limiting grooves form a limiting hole for limiting the insertion piece.

8. The housing device for a relay matching module as described in claim 6, characterized in that, The end of the baffle is located near the middle of the length direction of the housing; the circuit board assembly has a plate body, and the plate body abuts against the ends of the two baffles on the side near the insertion slot along the length direction of the housing.

9. The housing device for a relay matching module as described in claim 1, characterized in that, A first positioning part is provided on the inner side of the housing near the width direction, and a second positioning part is also provided on the inner side of the housing near the width direction. The first positioning part and the second positioning part on the same side of the housing width direction are distributed along the length direction of the housing. The inner sides of the two housings are arranged opposite each other, and the first positioning part of one housing and the corresponding second positioning part on the other housing cooperate to realize the positioning of the two housings.

10. The housing device for a relay matching module as described in claim 1, characterized in that, An elastic arm is provided on each of the two sides in the width direction of the housing. The elastic arm extends from a position near the middle in the length direction of the housing towards the length direction of the housing and is inclined outward relative to the width direction of the housing.

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