Stacked structure and stacked circuit board
Through the interference matching connection between the comb tooth group and the tooth gap, the problem of stacked circuit board thickness does not meet the needs is solved, and the spacing adjustment and heat dissipation functions are taken into account, which improves production efficiency and performance.
Patent Information
- Application Number
- CN202422287920.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-19
AI Technical Summary
Existing stacked circuit boards are prone to problems of thickness not meeting demand during the production process, resulting in waste of resources and thermal dissipation performance.
The interference fit connection between the comb tooth group and the tooth gap is adopted, and the spacing adjustment between the stacking parts is achieved through the clamping of the comb tooth and the tooth gap, taking into account both the thickness and heat dissipation functions.
It realizes that the stacked circuit board can be adjusted spacing during installation, taking into account thickness and heat dissipation performance, avoiding the problems of wasted resources and improper installation.
Smart Images
Figure CN223093965U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of circuit boards, and particularly relates to a stacking structure and a stacked circuit board. Background Art
[0002] A stacked circuit board is a set of circuit boards vertically stacked together. By stacking, more circuit functions can be realized in a limited space, improving the performance and functions of electronic devices, and it is often used in mobile phones and laptop computers. The stacked circuit board improves the integration and performance of the circuit by vertically stacking multiple circuit boards, mainly for improving space utilization.
[0003] The existing stacked circuit boards are commonly stacked by connection methods such as screw fixation, copper column welding or gluing. During the manufacturing process of the stacked circuit board, it is necessary to ensure the electrical connection and mechanical strength between each circuit board, and also to take into account the heat dissipation of the stacked circuit board and the thickness in the vertical direction of the stacked circuit board, so that the stacked circuit board can be installed in the casings of mobile phones and laptop computers while having a certain heat dissipation capacity.
[0004] Due to production errors and assembly errors, the thickness of the stacked circuit board in the vertical direction is likely to be too high or too low during actual production. For example: ① If the length of the fixing screws used is too long or too short, non-standard screw parts with appropriate lengths need to be customized. ② The thickness of the stacked circuit board after copper column welding does not meet the requirements, and the copper columns need to be removed and re-welded. ③ The thickness of the stacked circuit board after gluing does not meet the requirements, and the glue layer needs to be cleaned and re-glued. If the thickness of the stacked circuit board in the vertical direction is too high, it will cause waste of production resources and even affect the installation of the stacked circuit board and the casing. If the thickness of the stacked circuit board in the vertical direction is too low, it will affect the heat dissipation of the circuit board. Summary of the Utility Model
[0005] In view of the above deficiencies or defects in the prior art, the present utility model provides a stacking structure and a stacked circuit board, which can adjust the spacing during the stacking and installation process of the circuit board to take into account the thickness and heat dissipation function of the stacked circuit board.
[0006] To achieve the above object, the present utility model provides a stacking structure, including more than two stacking members. The stacking member includes a columnar main body, and at least one end of the columnar main body in the axial direction is provided with a comb tooth group. The comb tooth group includes more than two comb teeth, and the comb teeth are annularly distributed around the axis of the columnar main body and have tooth gaps between the comb teeth in the annular distribution direction.
[0007] Among them, the stacking members are stacked axially, and adjacent stacking members are clamped by the comb teeth and the tooth gaps, and the comb teeth and the tooth gaps are in interference fit.
[0008] In some embodiments, the columnar main body is provided with a connecting portion.
[0009] In some embodiments, the connecting portion is a screw portion and / or a welding disc.
[0010] In some embodiments, the columnar main body is provided with a through hole along the axial direction.
[0011] In some embodiments, a through groove extending along a direction perpendicular to the axis of the columnar main body is formed at the bottom of the tooth gap.
[0012] In some embodiments, the stacking member includes two edge stacking members, and a comb tooth group is arranged at one axial end of the columnar main body of the edge stacking member, and the two edge stacking members are respectively located at the head end and the tail end of the stacking structure.
[0013] In some embodiments, the stacking member further includes at least one intermediate stacking member, and comb tooth groups are arranged at both axial ends of the columnar main body of the intermediate stacking member, and the intermediate stacking member is clamped between the two edge stacking members.
[0014] In some embodiments, the end face of the comb tooth in the circumferential direction is a contact surface, and the path length of the contact surface along a direction perpendicular to the axis of the columnar main body is greater than the thickness of the comb tooth along a direction perpendicular to the axis of the columnar main body.
[0015] The present utility model further provides a stacked circuit board, which includes at least one set of the stacking structure as described above and two or more circuit board bodies distributed along the stacking direction of the stacking members in the stacking structure, and the circuit board bodies are fixedly connected to the stacking members in the stacking structure.
[0016] In some embodiments, the number of stacking members in a single set of the stacking structure is the same as the number of circuit board bodies, and the circuit board bodies are fixedly connected to the stacking members in a one-to-one correspondence.
[0017] Applying the above technical solution of the present utility model to a stacked circuit board has the following effects: the stacked connection of the circuit board bodies is realized through the stacking structure composed of stacking members, and the clamping and matching manner of the comb teeth and the tooth gaps between the stacking members can realize the pitch adjustment in the stacking direction, so that the stacked circuit board can perform pitch adjustment during the installation process to take into account the thickness and heat dissipation function of the stacked circuit board.
[0018] Other features and advantages of the present utility model will be described in detail in the subsequent specific implementation section. Description of the Drawings
[0019] Figure 1 It is a schematic perspective view of the first embodiment of the stacked component of the present utility model;
[0020] Figure 2 It is a schematic axial projection view of the first embodiment of the stacked component;
[0021] Figure 3 It is a schematic perspective view of the second embodiment of the stacked component of the present utility model;
[0022] Figure 4 It is a schematic axial projection view of the second embodiment of the stacked component;
[0023] Figure 5 It is a schematic axial projection view of the second embodiment of the stacked component;
[0024] Figure 6 It is a schematic perspective view of five types of the second embodiment of the stacked component;
[0025] Figure 7 It is a schematic perspective exploded view of the first embodiment of the stacking structure;
[0026] Figure 8 It is a schematic perspective exploded view of the second embodiment of the stacking structure;
[0027] Figure 9 It is a schematic side view of the first embodiment of the stacked circuit board;
[0028] Figure 10 is Figure 9 exploded view;
[0029] Figure 11 It is a schematic side view of the second embodiment of the stacked circuit board;
[0030] Figure 12 is Figure 11 exploded view.
[0031] Explanation of reference numerals
[0032] 10. Stacked component; 1. Edge stacked component; 1a. First stacked component; 1b. Second stacked component; 2. Intermediate stacked component; 2a. Third stacked component; 2b. Fourth stacked component; 2c. Fifth stacked component; 11. Columnar main body; 12. Connection part; 13. Comb tooth group; 13a. Comb tooth; 13b. Tooth gap; 13c. Contact surface; 14. Through slot; 15. Threaded hole; 20. Stacking structure; 30. Stacked circuit board; 3. Circuit board body; 4. Electrical component; 5. Through hole. Detailed implementation manners
[0033] The following is a detailed description of the specific embodiments of the present utility model. It should be understood that the specific embodiments described herein are only for explaining and understanding the present utility model, and are not used to limit the present utility model.
[0034] In the present utility model, unless otherwise stated, the orientation terms such as "upper" and "lower" generally refer to the orientation in the assembled and used state. "Inner" and "outer" refer to the inner and outer of the contour of each component itself.
[0035] The present utility model discloses a stacking structure 20 and a stacked circuit board 30. The stacking structure 20 is formed by stacking and connecting two or more stacking members 10. The stacked circuit board 30 includes two or more circuit board bodies 3, and the circuit board bodies 3 are fixedly connected to the stacking members 10 in the stacking structure 20. The spacing between the stacking members 10 in the stacking structure 20 can be adjusted along the stacking direction, so as to adjust the spacing between the circuit board bodies 3 fixed on the stacking members 10, taking into account the thickness of the stacked circuit board 30 to avoid interference of electrical components 4 and the heat dissipation function of the circuit board, and meeting the application requirements.
[0036] For the stacking structure 20, it includes two or more stacking members 10. The stacking member 10 includes a columnar main body 11, and at least one comb tooth group 13 is provided at one axial end of the columnar main body 11. The comb tooth group 13 includes two or more comb teeth 13a. The comb teeth 13a are annularly distributed around the axis of the columnar main body 11, and there is a tooth gap 13b between the comb teeth 13a in the annular distribution direction. Among them, the stacking members 10 are stacked axially, and adjacent stacking members 10 are clamped by the comb teeth 13a and the tooth gaps 13b, and the comb teeth 13a and the tooth gaps 13b are in interference fit.
[0037] Specifically, the stacking direction of the stacking members 10 in the stacking structure 20 is consistent with the axis of the stacking members 10. Adjacent stacking members 10 are axially clamped by the comb teeth 13a and the tooth gaps 13b. Within the axial dimension range of the comb teeth 13a and the tooth gaps 13b, adjacent stacking members 10 can move axially relative to each other, so as to achieve the purpose of adjusting the spacing between adjacent stacking members 10. In addition, the comb teeth 13a and the tooth gaps 13b are in interference fit to ensure the connection strength between adjacent stacking members 10, and the interference fit connection method is used to prevent the spacing between two adjacent stacking members 10 from changing without external force. Specifically, the function of the interference fit is mainly used to overcome the change in the spacing between two adjacent stacking members 10 under the action of gravity.
[0038] The present utility model discloses the following three embodiments of the stacking member 10:
[0039] Embodiment 1
[0040] In this embodiment, the comb teeth 13a of the stack member 10 are integrally formed with the columnar main body 11. In other embodiments, the comb teeth 13a can also be fixed to the columnar main body 11 by fixing means such as welding and gluing.
[0041] As shown in the Figure 1 accompanying drawings, the upper axial end of the columnar main body 11 of the left stack member 10 has a comb tooth group 13, and both axial ends of the columnar main body 11 of the right stack member 10 have comb tooth groups 13. That is, only the upper end of the left stack member 10 can be used to engage with other stack members 10, while both the upper and lower ends of the right stack member 10 can be used to engage with other stack members 10. In this embodiment, the number of comb teeth 13a and tooth gaps 13b in each comb tooth group 13 is eight. It should be noted that the interference fit strength between the comb teeth 13a and the tooth gaps 13b is proportional to the number of comb teeth 13a and tooth gaps 13b. That is, the more the number of comb teeth 13a and tooth gaps 13b, the larger the total contact area between the side walls of the comb teeth 13a and the tooth gaps 13b, and the higher the connection strength and the tightness of the interference fit between the comb teeth 13a and the tooth gaps 13b, but the more difficult it is to adjust the distance between the stack members 10. In addition, the more the number of comb teeth 13a and tooth gaps 13b, the smaller the thickness of the comb teeth 13a along the circumferential distribution direction, and the easier the comb teeth 13a are to break. In summary, the number of comb teeth 13a and tooth gaps 13b is set to eight, taking into account the connection strength between adjacent stack members 10, the ease of adjusting the distance between stack members 10, and the structural strength of the comb teeth 13a themselves.
[0042] Combined with the accompanying Figure 2 drawings, in this embodiment, the axial projection cross-sections of the comb teeth 13a and the tooth gaps 13b of the stack member 10 are both arc-shaped strips, which is simple in structure and convenient for processing. It should be noted that the comb teeth 13a and the tooth gaps 13b in the stack member 10 need to be engaged and matched with the tooth gaps 13b and the comb teeth 13a in another stack member 10. That is to say, the thickness dimensions of the comb teeth 13a and the tooth gaps 13b in the stack member 10 along the circumferential distribution direction need to be adapted to the thickness dimensions of the tooth gaps 13b and the comb teeth 13a in another stack member 10 along the circumferential distribution direction. In one stack member 10, there is no requirement for the adaptation of the thickness dimensions of the comb teeth 13a and the tooth gaps 13b in the same comb tooth group 13 along the circumferential distribution direction.
[0043] Detailed description: Along the circumferential distribution direction, if the thickness dimension of the comb teeth 13a in the same group of comb tooth groups 13 on the stacked member 10 is greater than the thickness dimension of the tooth gap 13b, the thickness dimension of the comb teeth 13a in the same group of comb tooth groups 13 on another stacked member 10 that is engaged with it needs to be less than the thickness dimension of the tooth gap 13b. The sizes of the comb teeth 13a and the tooth gaps 13b of the above two stacked members 10 are different and need to be separately manufactured. In the actual manufacturing process, the thicknesses of the comb teeth 13a and the tooth gaps 13b in the same group of comb tooth groups 13 on the stacked member 10 are designed to have the same size along the circumferential distribution direction, so that the sizes of the comb teeth 13a and the tooth gaps 13b on each stacked member 10 are the same, which is convenient for the unified manufacturing of the stacked member 10.
[0044] In a further setting, the columnar main body 11 has a connecting portion 12. Preferably, the connecting portion 12 is a screw portion or a welding plate or an assembly of a screw portion and a welding plate, so that the columnar main body 11 is fixed to the circuit board by means of threaded fastening and welding. Specifically, in this embodiment, the columnar main body 11 is cylindrical, and an external thread is machined on the columnar main body 11 as the screw portion. The welding plate is fixed on the columnar main body 11 or integrally formed with the columnar main body 11.
[0045] It should be noted that when the columnar main body 11 is other than cylindrical, such as a square column or a polygonal column, it is impossible to machine an external thread on the columnar main body 11 to form a screw portion. At this time, the columnar main body 11 is used to fix to the circuit board in the form of a welding plate. When the welding plate is integrally formed with the columnar main body 11, the columnar main body 11 needs to be made of a material that is easy to weld, such as copper or aluminum.
[0046] In a further setting, the columnar main body 11 is provided with a through hole along the axial direction. On the one hand, the material used for the stacked member 10 is reduced, saving material resources. On the other hand, the working environment temperature of the circuit board is high, and the stacked member 10 is prone to thermal expansion reaction. The through hole is provided inside the columnar main body 11 so that the columnar main body 11 has a tendency to expand thermally inward, thereby reducing the tendency of the columnar main body 11 to expand outward, and thus reducing the influence on the connection structure between the columnar main body 11 and the circuit board body 3. In this embodiment, a threaded hole 15 is provided through the inside of the columnar main body 11, which can also be used to connect bolts, so as to facilitate the installation of the stacked circuit board 30 onto the housings of mobile phones, computers, etc.
[0047] In a further setting, a through groove 14 extending along the axis direction of the vertical columnar main body 11 is provided at the bottom of the tooth gap 13b. Specifically, the through groove 14 communicates with the space that penetrates inside the columnar main body 11. Due to the high working environment where the circuit board is located, the air in the penetrating space inside the columnar main body 11 will be heated and warmed up. When the comb teeth 13a and the tooth gap 13b of two adjacent stacked members 10 are axially fully engaged, the setting of the through groove 14 can play a role in dissipating heat from the air inside the columnar space, eliminating the hidden danger of high pressure in the internal space of the columnar main body 11.
[0048] Embodiment 2
[0049] Combined with the attached Figure 3 and the attached Figure 4 As shown, the difference from Embodiment 1 is that the axial projection cross-section of the comb teeth 13a and the tooth gap 13b of the stacked member 10 is trapezoidal. For the convenience of description, the shorter bottom side of the trapezoid is called the upper base, and the longer bottom side of the trapezoid is called the lower base. In the attached Figure 3 figure, the upper shaft end of the columnar main body 11 of the left stacked member 10 has a comb tooth group 13, and both axial ends of the columnar main body 11 of the right stacked member 10 have a comb tooth group 13.
[0050] The attached Figure 4 figure shows the axial projection schematic diagrams of two stacked members 10 that are engaged with each other on the left and right sides (the through groove 14 and the threaded hole 15 are not shown). In the left figure of the attached Figure 4 figure, the upper base of the comb tooth 13a is closer to the center of the columnar main body 11 than the lower base, and the lower base of the tooth gap 13b is closer to the center of the columnar main body 11 than the upper base; in the right figure of the attached Figure 4 figure, the lower base of the comb tooth 13a is closer to the center of the columnar main body 11 than the upper base, and the upper base of the tooth gap 13b is closer to the center of the columnar main body 11 than the lower base. That is to say, the structures of the two stacked members 10 with trapezoidal cross-section comb teeth 13a and tooth gaps 13b are different and need to be separately manufactured.
[0051] Compared with Embodiment 1, in this embodiment, the contact surface area 13c of the side walls of the comb teeth 13a and the tooth gap 13b of the two stacked members 10 that are engaged with each other is larger. Combined with the attached Figure 2 and the attached Figure 4 figures, the end face of the comb tooth 13a in the circumferential direction is called the contact surface 13c, and this contact surface 13c is also the side wall of the tooth gap 13b. In this embodiment, the path length of the contact surface 13c in the direction perpendicular to the axis of the columnar main body 11 is greater than the thickness of the comb tooth 13a in the direction perpendicular to the axis of the columnar main body 11.
[0052] Specifically, in the first embodiment, the path length of the contact surface 13c in the direction perpendicular to the axis of the columnar main body 11 is equal to the thickness of the comb teeth 13a in the direction perpendicular to the axis of the columnar main body 11. When the thicknesses of the comb teeth 13a in the direction perpendicular to the axis of the columnar main body 11 are equal, the path length of the contact surface 13c in the direction perpendicular to the axis of the columnar main body 11 in this embodiment is greater than the path length of the contact surface 13c in the direction perpendicular to the axis of the columnar main body 11 in the first embodiment, so that the contact area 13c between the comb teeth 13a and the side wall of the tooth gap 13b in this embodiment is larger than that in the first embodiment. Since the comb teeth 13a and the tooth gap 13b are connected by interference fit, the larger the contact area 13c between the comb teeth 13a and the side wall of the tooth gap 13b, the greater the frictional force between the comb teeth 13a and the side wall of the tooth gap 13b, and the higher the reliability and connection strength of the interference fit.
[0053] Embodiment Three
[0054] Combined with the attached Figure 5 , compared with the second embodiment, the contact surface 13c in this embodiment is a curved surface. That is, when the thicknesses of the comb teeth 13a in the direction perpendicular to the axis of the columnar main body 11 are equal, the path length of the contact surface 13c in the direction perpendicular to the axis of the columnar main body 11 in this embodiment is greater than the path length of the contact surface 13c in the direction perpendicular to the axis of the columnar main body 11 in the second embodiment, so that the contact area 13c between the comb teeth 13a and the side wall of the tooth gap 13b in this embodiment is larger than that in the second embodiment.
[0055] Comparing the first embodiment, the second embodiment, and the third embodiment comprehensively: For the stacked member 10 in the first embodiment, the path length of the contact surface 13c in the direction perpendicular to the axis of the columnar main body 11 is the smallest, the connection strength of the interference fit is the lowest, and the processing of the comb teeth 13a and the tooth gap 13b with an arc-shaped strip cross-section is the simplest. In the third embodiment, the path length of the contact surface 13c in the direction perpendicular to the axis of the columnar main body 11 is the largest, the connection strength of the interference fit is the greatest, and the processing of the comb teeth 13a and the tooth gap 13b with an arc-shaped strip cross-section is the most difficult. The second embodiment takes into account both the connection strength of the interference fit and the processing difficulty, and has the best comprehensive performance among the three embodiments.
[0056] As shown in the attached Figure 6 , the present utility model specifically provides five types of stacked members 10 of the second embodiment. Among them, the first stacked member 1a and the second stacked member 1b are provided with a comb tooth group 13 at one axial end of the columnar main body 11, and the third stacked member 2a, the fourth stacked member 2b, and the fifth stacked member 2c are all provided with a comb tooth group 13 at both axial ends of the columnar main body 11.
[0057] Specifically, in the comb tooth group 13 on the first stack 1a, the lower bottom of the comb tooth 13a is closer to the center of the columnar body 11 than the upper bottom, and the upper bottom of the tooth gap 13b is closer to the center of the columnar body 11 than the lower bottom. In the comb tooth group 13 on the second stack 1b, the upper bottom of the comb tooth 13a is closer to the center of the columnar body 11 than the lower bottom, and the lower bottom of the tooth gap 13b is closer to the center of the columnar body 11 than the upper bottom. The structures of the comb tooth groups 13 at the upper and lower ends of the third stack 2a are different, that is: in the comb tooth group 13 at the upper end, the lower bottom of the comb tooth 13a is closer to the center of the columnar body 11 than the upper bottom, and the upper bottom of the tooth gap 13b is closer to the center of the columnar body 11 than the lower bottom; in the comb tooth group 13 at the lower end, the upper bottom of the comb tooth 13a is closer to the center of the columnar body 11 than the lower bottom, and the lower bottom of the tooth gap 13b is closer to the center of the columnar body 11 than the upper bottom. The structures of the comb tooth groups 13 at the upper and lower ends of the fourth stack 2b are the same, and in the comb tooth group 13 in the fourth stack 2b, the lower bottom of the comb tooth 13a is closer to the center of the columnar body 11 than the upper bottom, and the upper bottom of the tooth gap 13b is closer to the center of the columnar body 11 than the lower bottom. The structures of the comb tooth groups 13 at the upper and lower ends of the fifth stack 2c are also the same, and in the comb tooth group 13 in the fifth stack 2c, the upper bottom of the comb tooth 13a is closer to the center of the columnar body 11 than the lower bottom, and the lower bottom of the tooth gap 13b is closer to the center of the columnar body 11 than the upper bottom.
[0058] The present utility model discloses two embodiments of the following stacking structure 20.
[0059] Embodiment 1
[0060] As shown in the attached Figure 7 figure, the stacking structure 20 includes two stacks 10. The two stacks 10 are edge stacks 1, which are respectively located at the head end and the tail end of the stacking structure 20. Specifically, a comb tooth group 13 is provided at one axial end of the columnar body 11 of the edge stack 1.
[0061] In this embodiment, one of the edge stacks 1 is the first stack 1a, and the other edge stack 1 is the second stack 1b.
[0062] Embodiment 2
[0063] The stack 10 in the stacking structure 20 further includes at least one intermediate stack 2. As shown in the attached Figure 8 figure, compared with Embodiment 1 of the stacking structure 20, the stack 10 in the stacking structure 20 in this embodiment further includes two intermediate stacks 2, and both of the two intermediate stacks 2 are the third stack 2a.
[0064] In other embodiments, on the premise that the comb tooth groups 13 between adjacent stacks 10 can be engaged with each other, the type of the stack 10 can be selected accordingly.
[0065] The present utility model discloses a stacked circuit board 30 adopting the above-mentioned stacking structure 20, which includes at least one set of stacking structure 20 and more than two circuit board bodies 3 distributed along the stacking direction of the stacking members 10 in the stacking structure 20. The circuit board body 3 is fixedly connected to the stacking member 10 in the stacking structure 20. Specifically, the number of stacking members 10 in a single set of stacking structure 20 is the same as the number of circuit board bodies 3, and the circuit board body 3 is fixedly connected to the stacking member 10 in a one-to-one correspondence. Specifically, the present utility model discloses the following two embodiments of the stacked circuit board 30.
[0066] Embodiment 1
[0067] As shown in Figure 9 , Figure 10 shown, the stacked circuit board 30 includes two sets of stacking structures 20 and two circuit board bodies 3, and both of the two sets of stacking structures 20 adopt Embodiment 1 of the stacking structure 20. Through holes 5 are opened on the circuit board body 3 for the columnar main body 11 of the stacking member 10 to pass through. In this embodiment, the through hole 5 has internal threads and can be threadedly connected to the screw part, and the welding pad abuts against the circuit board body 3 and can be welded and fixed to the circuit board body 3. The spacing of the stacking structure 20 in the up and down direction needs to meet the requirement of avoiding interference between the electrical components 4 and the circuit board body 3 and having good heat dissipation performance.
[0068] In other embodiments, the number and position of the stacking structure 20 can be adjusted according to the shape of the circuit board body 3 and the actual installation requirements.
[0069] Embodiment 2
[0070] As shown in Figure 11 , Figure 12 shown, compared with Embodiment 1 of the stacked circuit board 30, the stacked circuit board 30 in this embodiment includes two sets of stacking structures 20 and two circuit board bodies 3, and both of the two sets of stacking structures 20 adopt Embodiment 2 of the stacking structure 20.
[0071] The preferred embodiments of the present utility model have been described in detail above. However, the present utility model is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present utility model, various simple modifications can be made to the technical solutions of the present utility model, and these simple modifications all belong to the protection scope of the present utility model.
[0072] In addition, it should be noted that in the above specific embodiments, the various specific technical features described can be combined in any appropriate manner without conflict. To avoid unnecessary repetition, the present utility model will not separately describe various possible combination methods.
[0073] In addition, any combination can be made among various different embodiments of the present utility model, as long as it does not violate the idea of the present utility model, and it should equally be regarded as the content disclosed by the present utility model.
Claims
1. A stacked structure (20), characterized in that, It includes more than two stacked parts (10), the stacked part (10) includes a columnar main body (11), and a comb tooth group (13) is arranged at least at one axial end of the columnar main body (11). The comb tooth group (13) includes more than two comb teeth (13a). The comb teeth (13a) are annularly distributed around the axis of the columnar main body (11), and there are tooth gaps (13b) between the comb teeth (13a) in the annular distribution direction. Among them, the stacked parts (10) are stacked axially. Adjacent stacked parts (10) are clamped with each other through the comb teeth (13a) and the tooth gaps (13b), and the comb teeth (13a) and the tooth gaps (13b) are in interference fit.
2. The stacked structure (20) according to claim 1, characterized in that, A connecting part (12) is provided on the columnar main body (11).
3. The stacked structure (20) according to claim 2, wherein The connecting part (12) is a screw part and / or a welding disc.
4. The stacked structure (20) according to claim 1, wherein, The columnar main body (11) is provided with a through hole along the axial direction.
5. The stacked structure (20) according to claim 4, wherein, A through groove (14) extending along the direction perpendicular to the axis of the columnar main body (11) is opened at the bottom of the tooth gap (13b).
6. The stacked structure (20) according to claim 1, wherein The stacked part (10) includes two edge stacked parts (1). A comb tooth group (13) is arranged at one axial end of the columnar main body (11) of the edge stacked part (1). The two edge stacked parts (1) are respectively located at the head end and the tail end of the stacked structure (20).
7. The stacked structure (20) according to claim 6, wherein The stacked part (10) further includes at least one intermediate stacked part (2). Comb tooth groups (13) are arranged at both axial ends of the columnar main body (11) of the intermediate stacked part (2). The intermediate stacked part (2) is clamped between the two edge stacked parts (1).
8. The stacked structure (20) according to any one of claims 1 to 7, characterized in that, The end face of the comb tooth (13a) in the annular direction is a contact surface (13c). The path length of the contact surface (13c) along the direction perpendicular to the axis of the columnar main body (11) is greater than the thickness of the comb tooth (13a) along the direction perpendicular to the axis of the columnar main body (11).
9. A stacked circuit board (30), characterized in that, It includes at least one group of stacked structures (20) as described in any one of claims 1 to 8 and more than two circuit board bodies (3) distributed along the stacking direction of the stacked parts (10) in the stacked structure (20). The circuit board body (3) is fixedly connected to the stacked parts (10) in the stacked structure (20).
10. The stacked circuit board (30) according to claim 9, characterized in that, The number of stacked parts (10) in a single group of the stacked structure (20) is the same as the number of circuit board bodies (3), and the circuit board body (3) is fixedly connected to the stacked part (10) in a one-to-one correspondence.