PCB connection structure and circuit device

Abstract

The utility model discloses the field of PCB connection technology relates to a kind of PCB connecting structure and circuit equipment, PCB connecting structure is used to vertically fixed interconnection of main structure and substructure, main structure, substructure at least one is PCB structure, PCB connecting structure includes connecting seat and locking piece, fixed part is equipped on the one end of connecting seat, fixed part is embedded main structure and is fixedly connected with main structure, the end of connecting seat away from fixed part is equipped with connecting part, connecting part is equipped with limit slot, substructure is embedded into limit slot in the direction of the upper surface of perpendicular main structure;Connecting part is equipped with connecting channel, locking piece passes through connecting channel and is fixedly connected with connecting part, to substructure is fixed in limit slot.The utility model realizes the vertical installation of main structure and substructure, the area of main structure, substructure is small when connecting;The main structure and substructure connected by PCB connecting structure can be quickly disassembled and assembled, and are convenient for maintenance and replacement.

Description

Technical Field

[0001] This utility model relates to the field of PCB connection technology, specifically to a PCB connection structure and circuit device. Background Technology

[0002] Currently, in the fields of electrical equipment and power supply equipment, vertical fixing between PCB circuit boards is usually achieved by soldering. Soldering offers the advantage of stable connection, but once fixed, it is difficult to disassemble, hindering future maintenance and replacement of the electrical or power equipment. Furthermore, soldering occupies a significant area of ​​the PCB, resulting in wasted space. Therefore, there is an urgent need for a new connection method for vertical fixing of PCBs to address the problems of large space occupation and inconvenient assembly / disassembly in existing methods. Utility Model Content

[0003] In view of the above problems, this utility model provides a PCB connection structure and circuit device to solve the problems of large space occupation and inconvenient disassembly and assembly in the existing connection methods.

[0004] According to one aspect of the present utility model, a PCB connection structure is provided for vertically fixing and interconnecting a main structure and a sub-structure, wherein at least one of the main structure and the sub-structure is a PCB structure, characterized in that the PCB connection structure includes: a connector and a locking fastener;

[0005] A fixing part is provided at one end of the connecting seat along the length direction. The fixing part is embedded in the main structure and fixedly connected to the main structure. The length direction of the connecting seat is perpendicular to the upper surface of the main structure. A connecting part is provided at the end of the connecting seat away from the fixing part. The connecting part is provided with a limiting groove. The sub-structure is embedded in the limiting groove in a direction perpendicular to the upper surface of the main structure.

[0006] The connecting part has a connecting channel through it. The central axis of the connecting channel is perpendicular to the length direction of the connecting seat. The fastener passes through the connecting channel and is fixedly connected to the connecting part to fix the substructure in the limiting groove.

[0007] In one alternative, the fixing part includes a locking member and a connecting shaft, one end of the connecting shaft being connected to the connecting part and the other end being connected to the end of the locking member away from the connecting part, the locking member being used for a fixed connection with a first locking hole of the main structure;

[0008] The outer wall of the locking component is provided with multiple limiting teeth arranged in a stepped manner along the axial direction of the connecting shaft. The minimum distance from the outer wall surface of the limiting teeth to the connecting shaft gradually decreases from far away from the connecting part to near the connecting part.

[0009] The end of the engaging component near the connecting part is spaced at a preset distance from the connecting shaft, and the distance from the outer wall of any limiting tooth to the center of the connecting shaft is greater than the radius of the first engaging hole.

[0010] In one alternative approach, the shortest distance between the inner wall of the engaging member and the connecting shaft gradually increases from the end furthest from the connecting part to the end closest to the connecting part.

[0011] In one alternative embodiment, the engaging member includes at least two opposing limiting members, each limiting member including a connecting section and an inclined section, with both ends of the connecting section connected to the inclined section and the connecting shaft, respectively.

[0012] The shortest distance between the inner wall of the inclined section and the connecting shaft gradually increases from the closer to the connecting section to the farther away from the connecting section.

[0013] In one alternative approach, the length direction of the connecting segment is perpendicular to the axial direction of the connecting shaft.

[0014] In one alternative embodiment, the end of the connecting portion away from the fixing portion is provided with a guide groove, the guide groove and the limiting groove are connected, and the distance between the opposite sidewalls of the guide groove gradually increases from the end closer to the limiting groove to the end farther from the limiting groove.

[0015] In one alternative configuration, the end of the connector that is connected to the connecting shaft is enlarged.

[0016] In one alternative embodiment, the locking device includes a movable part and a pin part, and a moving channel is provided along the length direction of the pin part;

[0017] One end of the movable part passes through the head end of the pin and is placed in the moving channel. The end of the pin that is away from the movable part passes through the connecting channel, and the tail end of the pin is placed outside the connecting part. The movable part moves in the moving channel to open the tail end.

[0018] In one alternative, both the connector and the locking mechanism are made of plastic.

[0019] According to another aspect of the present invention, a circuit device is provided, the circuit device including at least a main structure and a sub-structure, the main structure and the sub-structure being vertically fixedly connected by any of the PCB connection structures provided in the first aspect above, and at least one of the main structure and the sub-structure being a PCB structure.

[0020] This utility model embodiment uses a connecting seat and a locking fastener to vertically fix the main structure and the sub-structure. A fixing part is provided at one end of the connecting seat along its length, and a connecting part is provided at the other end. A limiting groove is provided on the connecting part, the depth of which coincides with the length of the connecting seat. The fixing part is embedded in the main structure for fixed connection, and the sub-structure is partially embedded and installed in the limiting groove, making the main structure and sub-structure vertically connected. The locking fastener passes through the connecting channel to fix the sub-structure in the limiting groove, ensuring that the position between the main structure and sub-structure is fixed. The PCB connection structure provided by this utility model achieves vertical installation of the main structure and sub-structure. The overall structure is compact, and the PCB connection structure occupies little area on the main and sub-structures during connection, which is beneficial for implementing high-density layouts of multiple PCBs in circuit equipment. Furthermore, during later maintenance and replacement, the main and sub-structures connected by the PCB connection structure can be quickly assembled and disassembled, facilitating maintenance and replacement, improving assembly efficiency and reliability.

[0021] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0023] Figure 1 A schematic diagram of the PCB connection structure provided in an embodiment of this utility model is shown;

[0024] Figure 2 This diagram illustrates the assembly of the PCB connection structure with the main and sub-structures provided in this embodiment of the invention.

[0025] Figure 3 It shows Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 This diagram illustrates the structure of the connector in the PCB connection structure provided by an embodiment of the present invention.

[0027] Figure 5 This diagram illustrates the assembly of the PCB connection structure with the main and sub-structures provided in this embodiment of the invention.

[0028] Figure 6 This diagram illustrates the structure of the connector in the PCB connection structure provided by an embodiment of the present invention.

[0029] Figure 7 This invention provides a schematic diagram of the locking mechanism in a PCB connection structure according to an embodiment of the present invention.

[0030] Figure 8 A cross-sectional view of the locking fastener in the PCB connection structure provided in this embodiment of the present invention is shown;

[0031] Figure 9 This diagram illustrates the assembly of the locking fastener and connector in the PCB connection structure provided by an embodiment of the present invention.

[0032] Figure 10 This diagram illustrates the assembly of the locking fastener and connector in the PCB connection structure provided by an embodiment of the present invention.

[0033] Figure 11 This diagram illustrates the assembly of the locking fastener and connector in the PCB connection structure provided by an embodiment of the present invention.

[0034] Figure 12 This diagram illustrates one implementation of the PCB connection structure provided in this embodiment of the present invention.

[0035] Figure 13 It shows Figure 12 Enlarged view of point C in the middle;

[0036] Figure 14 This diagram illustrates another implementation of the PCB connection structure provided in this embodiment of the present invention.

[0037] Figure 15 It shows Figure 14 Enlarged diagram of point D in the middle.

[0038] The reference numerals in the detailed embodiments are as follows:

[0039] 100. PCB connection structure; 200. Main structure; 300. Substructure;

[0040] 1. Connecting seat; 11. Fixing part; 111. Connecting shaft; 112. Engaging part; 113. Limiting tooth; 114. Limiting part; 115. Connecting section; 116. Inclined section;

[0041] 12. Connecting part; 13. Limiting groove; 14. Connecting channel; 15. Guide groove; 16. Mounting port;

[0042] 2. Locking element; 21. Moving part; 22. Pin part; 221. Tail end; 23. Moving channel;

[0043] 201. First engagement hole;

[0044] 301, Second engagement hole. Detailed Implementation

[0045] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0046] Example 1

[0047] Please see Figure 1 , Figure 1 A schematic diagram of the PCB connection structure 100 of this utility model is shown, as follows: Figure 2 As shown, the PCB connection structure 100 is used to vertically fix and interconnect the main structure 200 and the sub-structure 300. At least one of the main structure 200 and the sub-structure 300 is a PCB structure. The PCB connection structure 100 includes: a connector 1 and a locking fastener 2.

[0048] like Figure 3 As shown, a fixing part 11 is provided at one end of the connecting seat 1 along its length. The fixing part 11 is embedded in the main structure 200 and fixedly connected to the main structure 200. The length direction of the connecting seat 1 is perpendicular to the upper surface of the main structure 200. A connecting part 12 is provided at the end of the connecting seat 1 away from the fixing part 11. The connecting part 12 is provided with a limiting groove 13. The sub-structure 300 is embedded in the limiting groove 13 in a direction perpendicular to the upper surface of the main structure 200. Figure 4 As shown, the connecting part 12 is provided with a connecting channel 14. The central axis of the connecting channel 14 is perpendicular to the length direction of the connecting seat 1. The locking fastener 2 passes through the connecting channel 14 and is fixedly connected to the connecting part 12 to fix the substructure 300 in the limiting groove 13.

[0049] Specifically, the PCB connection structure 100 is used for vertical fixing between PCB structures, or for vertical fixing between PCB structures and other structures. PCB structures include motherboards and expansion boards, power boards and control boards, etc., in electronic circuit equipment.

[0050] like Figure 2 As shown, the main structure 200 and the sub-structure 300 are block-shaped. A first engaging hole 201 is provided in the main structure 200, and a second engaging hole 301 is provided in the sub-structure 300, for the fixing part 11 of the connecting seat 1 and the locking fastener 2 to pass through, respectively. Figure 5As shown, the fixing part 11 is inserted into the first engaging hole 201 in a direction perpendicular to the surface of the main structure 200 and is fixedly connected to the main structure 200, ensuring that the connecting seat 1 can be stably installed on the main structure 200 and ensuring a stable connection between the sub-structure 300 and the main structure 200 when the sub-structure 300 is installed on the connecting seat 1. A second engaging hole 301 is provided in the sub-structure 300. When the sub-structure 300 is installed in the limiting groove 13, the central axis of the second engaging hole 301 coincides with the central axis of the connecting channel 14. When the locking fastener 2 passes through the connecting channel 14, it also passes through the second locking hole, fixing the sub-structure 300 and the connecting seat 1, thus realizing a vertical fixed connection between the main structure 200 and the sub-structure 300.

[0051] Furthermore, such as Figure 12 and Figure 13 As shown, the limiting groove 13 is U-shaped, meaning the connecting part 12 consists of two connecting plates facing each other, and the space between the two connecting plates is the limiting groove 13. The connecting channel 14 is provided on the two connecting plates. The openings of the limiting groove 13 face to the side and the top surface. The two openings on the side are mounting ports 16, and the opening on the top surface is a slot. At this time, any position of the edge of the sub-structure 300 can be installed into the limiting groove 13. When one side of the sub-structure 300 is placed within the limiting groove 13,

[0052] Furthermore, such as Figure 14 and Figure 15 As shown, a mounting port 16 is provided on one side of the limiting groove 13. The mounting port 16 allows one end of the substructure 300 to pass through, and at this time, the four corners of the edge of the substructure 300 can be inserted into the limiting groove 13 for installation.

[0053] The PCB connection structure 100, including the connector 1 and the locking fastener 2, is made of plastic insulating material and has good mechanical strength and electrical insulation.

[0054] The connecting seat 1 has a fixing part 11 at one end along its length direction. The fixing part 11 is embedded in the first engagement hole 201 of the main structure 200 and is fixed to the main structure 200 by interference fit or elastic buckle. After installation, the length direction of the connecting seat 1 is perpendicular to the upper surface of the main structure 200, providing a basis for the vertical installation of the substructure 300.

[0055] A connecting part 12 is provided at the other end of the connecting seat 1 away from the fixing part 11. The connecting part 12 has a limiting groove 13 with openings facing the side and the top surface. The opening on the side is a mounting port 16, and the opening on the top surface is a slot. The width of the limiting groove 13 matches the thickness of the sub-structure 300. The width of the limiting groove 13 allows the sub-structure 300 to be inserted in a direction perpendicular to the upper surface of the main structure 200, thereby achieving the initial positioning of the sub-structure 300.

[0056] The connecting part 12 has a through-hole connecting channel 14, the central axis of which is perpendicular to the length direction of the connecting seat 1. Furthermore, the inner wall of the connecting channel 14 is threaded to engage with the threaded surface of the locking fastener 2 to achieve a fixed connection.

[0057] This utility model achieves vertical installation of the main structure 200 and the sub-structure 300 through the connecting seat 1 and the locking fastener 2. The base of the connecting seat 1 occupies a small area of ​​the main structure 200, effectively freeing up the board space of the PCB structure. This allows for the layout of more components or the implementation of larger copper areas on the PCB motherboard and PCB daughterboard, improving product integration and reducing the number of PCB layers and size requirements, which helps control costs.

[0058] In one implementation, such as Figure 4 and Figure 5 As shown, the fixing part 11 includes a locking member 112 and a connecting shaft 111. One end of the connecting shaft 111 is connected to the connecting part 12, and the other end is connected to the end of the locking member 112 away from the connecting part 12. The locking member 112 is used to fix and connect with the first locking hole 201 of the main structure 200. The outer wall of the locking member 112 is provided with a plurality of limiting teeth 113 arranged in a stepped manner along the axial direction of the connecting shaft 111. The minimum distance from the outer wall surface of the limiting teeth 113 to the connecting shaft 111 gradually decreases from away from the connecting part 12 to close to the connecting part 12. The end of the locking member 112 close to the connecting part 12 is spaced apart from the connecting shaft 111 by a preset distance, and the distance from the outer wall surface of any limiting tooth 113 to the center of the connecting shaft 111 is greater than the radius of the first locking hole 201.

[0059] The engaging member 112 is positioned at a distance from the connecting shaft 111 body at one end near the connecting part 12. When the engaging member 112 is inserted into the first engaging hole 201, the outer wall of the limiting tooth 113 abuts against the side wall of the first engaging hole 201, and the engaging member 112 moves closer to the connecting shaft 111 so that the engaging member 112 deforms and generates elastic force. The elastic force acts on the side wall of the first engaging hole 201, thereby achieving a fixed connection between the connecting seat 1 and the main structure 200.

[0060] The outer wall of the engaging member 112 is provided with multiple continuous limiting teeth 113 arranged in a stepped manner along the axial direction of the connecting shaft 111 (i.e., the length direction of the connecting shaft 111). The minimum distance from the outer wall surface of different limiting teeth 113 to the central axis of the connecting shaft 111 (i.e., the effective engagement radius between the limiting teeth 113 and the first engaging hole 201) is different, gradually decreasing from the end of the engaging member 112 away from the connecting part 12 to the end closer to the connecting part 12. Different limiting teeth 113 corresponding to different effective engagement radii are used to cooperate with first engaging holes 201 of different radii, so that the connecting seat 1 is adapted to the main structure 200 corresponding to different first engaging holes 201.

[0061] The minimum distance from the outer wall of the limiting tooth 113 to the connecting shaft 111 gradually decreases from far away from the connecting part 12 to near the connecting part 12, so that the first engaging hole 201 can abut against the outer side of the sized limiting tooth 113, while the limiting tooth 113 passing through the first engaging hole 201 can engage with the lower surface of the main structure 200, preventing the connecting seat 1 from detaching from the main structure 200, and further improving the installation stability between the connecting seat 1 and the main structure 200.

[0062] In this embodiment, when the installer aligns the fixing part 11 with the first engaging hole 201 on the main structure 200 and applies pressure, the engaging member 112 begins to enter the first engaging hole 201. Since the limiting tooth 113 corresponding to the largest effective radius is larger than the radius of the first engaging hole 201, the engaging member 112 will be squeezed by the hole wall of the first engaging hole 201 during insertion. The end of the engaging member 112 near the connecting part 12 is spaced at a preset distance from the connecting shaft 111. This preset distance provides space for the elastic deformation of the engaging member 112, allowing the limiting tooth 113 to slide through the hole wall of the first engaging hole 201 step by step. When the engaging member 112 has completely penetrated the main structure 200, the elastically recovering limiting tooth 113 will lock onto the lower surface of the main structure 200, so that the connecting seat 1 is firmly locked on the main structure 200, effectively preventing the connecting seat 1 from coming out of the first engaging hole 201.

[0063] Furthermore, the shortest distance between the inner wall of the engaging member 112 and the connecting shaft 111 gradually increases from the end away from the connecting portion 12 to the end closer to the connecting portion 12. The distance between the inner wall of the engaging member 112 and the connecting shaft 111 is defined as a second distance; the second distance gradually increases from the end of the engaging member 112 away from the connecting portion 12 to the end closer to the connecting portion 12. At the end away from the connecting portion 12, the second distance, i.e., the gap between the inner wall of the engaging member 112 and the connecting shaft 111, is smaller, making this area relatively thicker and more rigid; while closer to the connecting portion 12, the gap between the inner wall of the engaging member 112 and the connecting shaft 111 gradually increases, and the flexibility and elastic deformation capacity of this area gradually increase, enabling the engaging member 112 to undergo sufficient elastic deformation, while providing sufficient space to accommodate the elastic displacement of the engaging member 112.

[0064] In one implementation, such as Figure 6 As shown, the engaging member 112 includes at least two opposing limiting members 114. Each limiting member 114 includes a connecting section 115 and an inclined section 116. The two ends of the connecting section 115 are connected to the inclined section 116 and the connecting shaft 111, respectively. The shortest distance between the inner sidewall of the inclined section 116 and the connecting shaft 111 gradually increases from near the connecting section 115 to far away from the connecting section 115.

[0065] The circumferential distribution of multiple independent limiting members 114 enables the engaging member 112 to produce uniform and symmetrical elastic contraction during insertion, which greatly improves the smoothness and centering of the insertion process and avoids unilateral jamming or skewness when the fixing part 11 is inserted into the first engaging hole 201.

[0066] Furthermore, the length direction of the connecting segment 115 is perpendicular to the axial direction of the connecting shaft 111, that is, the connecting shaft 111 is vertically arranged and the connecting segment 115 is horizontally arranged. The shortest distance between the inner wall of the inclined segment 116 and the connecting shaft 111 is the second distance. The second distance gradually increases from near the connecting segment 115 to far away from the connecting segment 115, so that the connecting segment 115 and the connecting shaft 111 have sufficient rigidity to provide stable support for the inclined segment 116. The flexibility and elastic deformation capacity of the inclined segment 116 gradually increase from the end near the connecting segment 115 to the end far away from the connecting segment 115, so that the inclined segment 116 can undergo a sufficient amount of elastic deformation, while providing sufficient space to accommodate the elastic displacement of the inclined segment 116.

[0067] In one implementation, such as Figure 4 and Figure 6 As shown, the end of the connecting part 12 away from the fixing part 11 is provided with a guide groove 15. The guide groove 15 is connected to the limiting groove 13, and the distance between the opposite sidewalls of the guide groove 15 gradually increases from the end closer to the limiting groove 13 to the end farther away from the limiting groove 13. By setting the guide groove 15, and the distance between the opposite sidewalls of the guide groove 15 gradually increases from the end closer to the limiting groove 13 to the end farther away from the limiting groove 13, that is, the opening of the guide groove 15 is funnel-shaped. The funnel-shaped entrance can significantly reduce the alignment accuracy requirements when the substructure 300 is inserted into the limiting groove 13, so that the operator can more quickly align and install the substructure 300 into the limiting groove 13, effectively improving the assembly efficiency. At the same time, the sidewalls of the guide groove 15 can correct the lateral deviation that exists during the insertion of the substructure 300, and solve the problems of assembly stress and component wear reduction between the substructure 300 and the connecting seat 1 caused by installation deviation.

[0068] Furthermore, such as Figure 6As shown, the end of the connecting part 12 connected to the connecting shaft 111 is enlarged, increasing the contact area between the connecting part 12 and the upper surface of the main structure 200. At the same time, it enhances the mechanical strength and rigidity of the root of the connecting part 12 connected to the fixing part 11, enabling the root to more effectively resist the bending moment from the substructure 300 and the torsional load generated by the fastener 2. This improves the load-bearing capacity and fatigue resistance of the connecting seat 1, preventing the root of the connecting part 12 from breaking or plastically deforming under long-term use or accidental stress, and greatly improving the reliability and durability of the connection. Meanwhile, the enhanced strength and rigidity of the root of the connecting part 12 ensures that the connection between the connecting part 12 and the connecting shaft 111 remains stable during the locking process of the fastener 2 and in subsequent vibration environments.

[0069] In one implementation, such as Figure 7 and Figure 8 As shown, the locking fastener 2 includes a movable part 21 and a pin part 22. A moving channel 23 is provided along the length direction of the pin part 22. One end of the movable part 21 passes through the head end of the pin part 22 and is placed in the moving channel 23. The end of the pin part 22 away from the movable part 21 passes through the connecting channel 14, and the tail end 221 of the pin part 22 is placed outside the connecting part 12. The movable part 21 moves in the moving channel 23 to open the tail end 221.

[0070] A moving channel 23 is provided inside the pin part 22 along the length direction. The movable part 21 has a cylindrical spindle. One end of the spindle is inserted from the head end of the pin part 22 and placed in the moving channel 23. The spindle can move smoothly in the moving channel 23.

[0071] Before connector 1 and locking fastener 2 are fixed, such as Figure 9 As shown, the movable part 21 is in the initial position, at which time the tail end 221 of the latch part 22 remains in a retracted state, and its outer diameter is small, making it easy to pass through the connecting channel 14 on the connecting part 12. Figure 10 As shown, when the substructure 300 is placed into the limiting groove 13, and the central axis of the connecting channel 14 of the connecting part 12 coincides with the central axis of the second engaging hole 301 of the substructure 300, the tail end 221 of the pin part 22 is aligned and passes through the connecting channel 14 and the second engaging hole 301 until the tail end 221 of the pin part 22 protrudes from the other side of the connecting part 12. At this time, as... Figure 11As shown, a force is applied to the movable part 21, pushing it closer to the pin part 22. The spindle of the movable part 21 moves within the moving channel 23 of the pin part 22 towards the tail end 221 of the pin part 22. The spindle of the movable part 21 acts on the inner wall of the moving channel 23 of the tail end 221 of the pin part 22, causing the tail end 221 of the pin part 22 to undergo radial elastic expansion or mechanical opening, significantly increasing the outer diameter of the tail end 221 of the pin part 22. This results in a mechanical lock formed between the tail end 221 of the pin part 22 and the tail end 221 of the pin part 22 at the outlet side of the connecting channel 14, ensuring a stable connection between the locking member and the connecting seat 1 and the substructure 300.

[0072] When disassembly is required, pull the movable part 21 to return the spindle from the tail end 221 to the head end, releasing the radial constraint on the tail end 221. The tail end 221 of the pin part 22 returns to the retracted state by its own elasticity or structure, and the entire locking fastener 2 can be easily pulled out from the connecting channel 14 to achieve quick disassembly.

[0073] Furthermore, both the connector 1 and the locking fastener 2 are made of plastic. The PCB connection structure 100 is entirely made of plastic, which allows for more flexible and free circuit settings on the main structure 200 and the sub-structure 300. Copper can be directly laid on the main structure 200 and the sub-structure 300 nearby without deliberately avoiding the mounting points, thus improving circuit performance and reliability.

[0074] Example 2

[0075] Based on the PCB connection structure 100 provided in Embodiment 1 above, Embodiment 2 provides a circuit device, which includes at least a main structure 200 and a sub-structure 300. The main structure 200 and the sub-structure 300 are vertically fixedly connected by any of the PCB connection structures 100 provided in Embodiment 1, and at least one of the main structure 200 and the sub-structure 300 is a PCB structure.

[0076] In this embodiment, the main structure 200 and the secondary structure 300 in the circuit device are vertically fixedly connected through the PCB connection structure 100. The main structure 200 and the secondary structure 300 are vertically fixedly connected by the cooperation of the connecting seat 1 and the locking fastener 2. A fixing part 11 is provided at one end of the connecting seat 1 along its length, and a connecting part 12 is provided at the other end. A limiting groove 13 is provided on the connecting part 12, and the depth direction of the limiting groove 13 coincides with the length of the connecting seat 1. The fixing part 11 is embedded in the main structure 200 and fixedly connected to it. The secondary structure 300 is partially embedded and installed in the limiting groove 13, so that the main structure 200 and the secondary structure 300 are vertically connected. The locking fastener 2 passes through the connecting channel 14 to fix the secondary structure 300 in the limiting groove 13, ensuring that the position between the main structure 200 and the secondary structure 300 is fixed. The PCB connection structure 100 provided by this utility model enables the vertical installation of the main structure 200 and the sub-structure 300. The overall structure is compact, and the main structure 200 and the sub-structure 300 occupy a small area when connected, which is conducive to the high-density layout of multiple PCBs in circuit equipment. At the same time, in the later maintenance and replacement, the main structure 200 and the sub-structure 300 connected by the PCB connection structure 100 can be quickly assembled and disassembled, which facilitates maintenance and replacement, and improves assembly efficiency and reliability.

[0077] It should be noted that, unless otherwise stated, the technical or scientific terms used in the embodiments of this utility model should have the ordinary meaning understood by those skilled in the art to which the embodiments of this utility model pertain.

[0078] In the description of this embodiment of the present invention, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention 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. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0079] Furthermore, technical terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of the embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0080] In the description of this embodiment of the invention, unless otherwise explicitly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0081] In the description of this embodiment of the invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A PCB connection structure for vertically and fixedly interconnecting a main structure and a sub-structure, wherein at least one of the main structure and the sub-structure is a PCB structure, characterized in that, The PCB connection structure includes: a connector and a locking element; A fixing part is provided at one end of the connecting seat along its length direction. The fixing part is embedded in the main structure and fixedly connected to the main structure. The length direction of the connecting seat is perpendicular to the upper surface of the main structure. A connecting part is provided at the end of the connecting seat away from the fixing part. The connecting part is provided with a limiting groove. The sub-structure is embedded in the limiting groove in a direction perpendicular to the upper surface of the main structure. The connecting part is provided with a connecting channel, the central axis of the connecting channel is perpendicular to the length direction of the connecting seat, and the locking fastener passes through the connecting channel and is fixedly connected to the connecting part to fix the substructure in the limiting groove.

2. The PCB connection structure according to claim 1, characterized in that, The fixing part includes a locking member and a connecting shaft. One end of the connecting shaft is connected to the connecting part, and the other end is connected to the end of the locking member away from the connecting part. The locking member is used to fix and connect with the first locking hole of the main structure. The outer wall of the locking member is provided with a plurality of limiting teeth arranged in a stepped manner along the axial direction of the connecting shaft. The minimum distance from the outer wall surface of the limiting teeth to the connecting shaft gradually decreases from away from the connecting part to close to the connecting part. The end of the engaging member near the connecting part is spaced at a predetermined distance from the connecting shaft, and the distance from the outer wall of any of the limiting teeth to the center of the connecting shaft is greater than the radius of the first engaging hole.

3. The PCB connection structure according to claim 2, characterized in that, The shortest distance between the inner wall of the engaging member and the connecting shaft gradually increases from the end away from the connecting part to the end closer to the connecting part.

4. The PCB connection structure according to claim 2 or 3, characterized in that, The engaging component includes at least two opposing limiting components, each limiting component including a connecting section and an inclined section, with both ends of the connecting section connected to the inclined section and the connecting shaft, respectively. The shortest distance between the inner wall of the inclined section and the connecting shaft gradually increases from near the connecting section to far away from the connecting section.

5. The PCB connection structure according to claim 4, characterized in that, The length direction of the connecting segment is perpendicular to the axial direction of the connecting shaft.

6. The PCB connection structure according to claim 4, characterized in that, The connecting part is provided with a guide groove at the end away from the fixing part. The guide groove is connected to the limiting groove, and the distance between the opposite sidewalls of the guide groove gradually increases from the end closer to the limiting groove to the end away from the limiting groove.

7. The PCB connection structure according to claim 6, characterized in that, The end of the connecting part that is connected to the connecting shaft is enlarged.

8. The PCB connection structure according to claim 1, characterized in that, The locking device includes a movable part and a pin part, and the pin part has a moving channel along the length direction of the pin part; One end of the movable part passes through the head end of the pin and is placed in the moving channel. The end of the pin away from the movable part passes through the connecting channel, and the tail end of the pin is placed outside the connecting part. The movable part moves within the moving channel to open the tail end.

9. The PCB connection structure according to claim 1, characterized in that, Both the connector and the locking fastener are made of plastic.

10. A circuit device, characterized in that, The circuit device includes at least a main structure and a sub-structure, wherein the main structure and the sub-structure are vertically fixedly connected by a PCB connection structure as described in any one of claims 1-9, and at least one of the main structure and the sub-structure is a PCB structure.

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