A fixing structure for PCBA boards

Abstract

The present invention relates to a fixing structure of a PCBA board, comprising: a structural body, the structural body is formed with a notch, and two opposite sides of the notch are correspondingly provided with mounting grooves; and a pair of elastic members, each elastic member is arranged in each mounting groove in a one-to-one correspondence; wherein, a barb portion is formed on the side of the elastic member facing the side wall of the mounting groove, the barb portion can be embedded and fixed on the side wall of the mounting groove, and the elastic member can be tightly fixed against the edge of the PCBA board. The technical solution of the present invention is to open a mounting groove for vertical insertion of the PCBA board on two opposite sides of the notch of the structural body, the barb portion of the elastic member is embedded and fixed on the side wall of the mounting groove, and the elastic member is tightly fixed against the edge of the PCBA board. With such a configuration, the PCBA board can be quickly and vertically fixed, and the fixation can be firm, and the stress concentration on the components can be effectively reduced, and the tin cracking phenomenon of the components can be avoided, and the installation occupies less space.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic equipment, and in particular to a fixing structure of a PCBA board. Background Art

[0002] PCBA is the abbreviation of Printed Cricuit Board + Assembly, which means the entire process of a blank PCB board going through SMT mounting and then DIP plug-in, referred to as PCBA.

[0003] Traditional PCBA boards are fixed with screws, which can easily cause stress concentration on components on the PCBA board after assembly. It can also easily cause solder cracks in components close to the screw holes, affecting electrical functions. Summary of the invention

[0004] The object of the present invention is to provide a fixing structure applied to a PCBA board, which has a simple structure and is easy to install, can reduce stress concentration on components, and can also avoid tin cracking of components.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A fixing structure of a PCBA board, comprising:

[0007] A structural body, wherein the structural body is formed with a notch, and two opposite sides of the notch are correspondingly provided with mounting grooves;

[0008] and at least one pair of elastic members, each of which is arranged in each of the mounting grooves in a one-to-one correspondence; wherein a barb portion is formed on the side of the elastic member facing the side wall of the mounting groove, the barb portion can be embedded and fixed on the side wall of the mounting groove, and the elastic member can be tightly fixed to the edge of the PCBA board.

[0009] Preferably, the elastic member is formed with a guide groove, and a pressing portion is provided on both side walls opposite to each other of the guide groove, and each of the pressing portions is inclined toward each other. When the PCBA board is inserted into the guide groove, the pressing portion can be tightly fixed with the edge of the PCBA board.

[0010] Preferably, a limiting opening is formed on one side of the PCBA board facing the mounting slot, and each of the pressing portions can penetrate into the limiting opening.

[0011] Preferably, the elastic member is formed with a guide groove, and both side wall ends of the guide groove facing the bottom surface of the recess are formed with pressing portions, and each of the pressing portions is at least partially movably overlapped.

[0012] Preferably, a limiting opening is formed on one side of the PCBA board facing the mounting slot, and each of the pressing portions can penetrate into the limiting opening.

[0013] Preferably, the fixing structure further comprises a connecting member, both ends of which are respectively fixedly connected to one end of each of the elastic members away from the bottom surface of the recess, and each of the elastic members is formed with a guide groove.

[0014] Preferably, the connecting member and each of the elastic members are integrally formed.

[0015] Preferably, the elastic member defines a limiting portion, and the two opposite ends of the limiting portion both form the barb portions; a limiting opening is formed on the side of the PCBA board facing the mounting slot, and the limiting portions are limitedly abutted against the limiting opening one by one, and each of the barbs is embedded and fixed on the two opposite side surfaces of the mounting slot one by one.

[0016] Preferably, two opposite side surfaces of the installation groove are formed with limiting bosses arranged in a mirror image, and one end of the elastic member facing the bottom surface of the recess can abut against each of the limiting bosses.

[0017] Preferably, embedding notches corresponding to and abutting against each of the barbs are formed on opposite side surfaces of the mounting groove respectively; or, the structural body is a plastically deformable structural member.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] A fixing structure of a PCBA board provided in the above technical solution is to open installation grooves for vertical insertion of the PCBA board on two opposite sides of the notch of the structure body, and the barbed portion of the elastic member is embedded and fixed on the side wall of the installation groove, while the elastic member is tightly fixed to the edge of the PCBA board. Such an arrangement can quickly and vertically fix the PCBA board and fix it firmly, which can effectively reduce the stress concentration on the components and avoid the tin cracking of the components, and its installation occupies less space. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a fixed structure in Example 1.

[0021] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the fixed structure shown.

[0022] Figure 3 for Figure 1 A schematic cross-sectional view of the fixing structure shown.

[0023] Figure 4This is a structural schematic diagram of a fixed structure in Example 2.

[0024] Figure 5 for Figure 4 Schematic diagram of the exploded structure of the fixed structure shown.

[0025] Figure 6 for Figure 4 A schematic cross-sectional view of the fixing structure shown.

[0026] Figure 7 This is a structural schematic diagram of a fixed structure in Example 3.

[0027] Figure 8 for Figure 7 Schematic diagram of the exploded structure of the fixed structure shown.

[0028] Fig. 9 for Figure 7 A schematic structural diagram of the elastic member shown in another perspective.

[0029] Fig.10 for Figure 7 A schematic cross-sectional view of the fixing structure shown.

[0030] Fig.11 This is a structural schematic diagram of a fixed structure in Example 4.

[0031] Fig.12 for Fig.11 Schematic diagram of the exploded structure of the fixed structure shown.

[0032] Fig.13 for Fig.11 A schematic cross-sectional view of the fixing structure shown.

[0033] Fig.14 This is a structural schematic diagram of a fixed structure in Example 5.

[0034] Fig.15 for Fig.14 Schematic diagram of the exploded structure of the fixed structure shown.

[0035] Fig.16 for Fig.14 A schematic structural diagram of the elastic member shown in another perspective.

[0036] Fig.17 for Fig.14 A schematic cross-sectional view of the fixing structure shown.

[0037] 100, fixing structure; 10, structural body; 11, notch; 12, mounting groove; 13, limiting boss; 20, elastic member; 21, barb portion; 22, guide groove; 221, pressing portion; 23, limiting portion; 30, PCBA board; 31, limiting opening; 40, connecting member. DETAILED DESCRIPTION

[0038] The present invention will be described in more detail below in conjunction with the accompanying drawings. It should be noted that the following description of the present invention with reference to the accompanying drawings is only illustrative and not restrictive. The various embodiments can be combined with each other to form other embodiments not shown in the following description.

[0039] Embodiment 1

[0040] Please also read Figures 1 to 3 In this embodiment, a fixing structure 100 applied to a PCBA board 30 is provided. The fixing structure 100 has a simple structure and is easy to assemble. It can reduce the stress on components during assembly, avoid stress concentration, and avoid tin cracking, and has good applicability.

[0041] The fixing structure 100 at least comprises: a structural body 10 and at least one pair of elastic members 20. A notch 11 is formed on the structural body 10. The notch 11 is arranged in a U shape. Two opposite sides of the notch 11 are provided with mounting grooves 12. The PCBA board 30 can be vertically inserted and fixed on the structural body 10 along the mounting grooves 12. Each elastic member 20 is arranged in each mounting groove 12 in a one-to-one correspondence. A barb 21 is formed on one side of the elastic member 20 facing the side of the mounting groove 12. The barb 21 can be embedded and fixed at the side wall of the mounting groove 12. At the same time, the elastic member 20 can be tightly fixed against the edge of the PCBA board 30.

[0042] In order to limit the assembly position of the elastic member 20, as shown in FIG. Figure 2 As shown, the two opposite sides of the installation groove 12 are formed with limiting bosses 13 arranged in a mirror image, and one end of the elastic member 20 facing the bottom surface of the recess 11 can abut against each limiting boss 13, so as to limit the assembly position of the elastic member 20. It can be understood that the installation groove 12 forms two guide rail sections of different sizes with the limiting boss 13 as the boundary, which can be respectively recorded as: a first groove section and a second groove section, the first groove section is far away from the bottom surface of the recess 11, the size of the first groove section is adapted to the size of the elastic member 20, the second groove section is connected to the bottom surface of the recess 11, and the size of the second groove section is adapted to the PCBA board 30, so as to limit the PCBA board 30 based on the second groove section.

[0043] It can be understood that in order to achieve the abutment between the barb portion 21 and the side wall of the mounting groove 12, the structural body 10 is a plastically deformable structural member, so that the barb portion 21 can be embedded and fixed on the side wall of the mounting groove 12; or, embedding notches corresponding to and abutting against each barb portion 21 are respectively formed on the opposite side surfaces of the mounting groove 12. In this way, the barb portion 21 can be embedded in the embedding notch to fix the elastic member 20 on the structural body 10.

[0044] Among them, the elastic member 20 is formed with a guide groove 22, and a pressing portion 221 is provided on the two opposite side walls of the guide groove 22. Each pressing portion 221 is inclined toward each other. When the PCBA board 30 is inserted into the guide groove 22, each pressing portion 221 can be tightly fixed with the edge of the PCBA board 30.

[0045] It can be understood that the insertion and fixing process of the PCBA board 30 in this embodiment can be described as: the staff installs each elastic member 20 into the corresponding first groove section, and makes the elastic member 20 abut against the limiting boss 13 on the side facing the recess 11; then, the PCBA board 30 is inserted from top to bottom along the guide groove 22 until the PCBA board 30 is abutted and fixed with the bottom surface of the recess 11. At this time, the barb portion 21 is squeezed by the PCBA board 30 and embedded and fixed to the side wall of the mounting groove 12, and each pressing portion 221 is also abutted and fixed with the edge of the PCBA board 30. With such a configuration, the elastic member 20 can be fixed based on the cooperation between the barb portion 21 and the structural body 10, and the PCBA board 30 can be fixed by the abutment fixation of the pressing portion 221 and the PCBA board 30, thereby realizing the fixed assembly among the elastic member 20, the structural body 10 and the PCBA board 30, thereby achieving the purpose of quickly and vertically inserting and fixing the PCBA board 30, and the installation is convenient, the assembly efficiency is good, and the overall assembly occupies less space.

[0046] Embodiment 2

[0047] The difference from the above-mentioned embodiment 1 is that:

[0048] Please also read Figures 4 to 6 In order to better fix the PCBA board 30 vertically inserted into the mounting slot 12 based on the pressing portion 221, a limiting opening 31 is formed on a layer of the PCBA board 30 facing the mounting slot 12, and each pressing portion 221 can be inserted into the limiting opening 31, so that each pressing portion 221 can be stuck at the limiting opening 31, thereby achieving the effect of preventing the PCBA board 30 from falling out of the mounting slot 12.

[0049] Embodiment 3

[0050] The difference from the above-mentioned embodiment 2 is that:

[0051] Please also read Figures 7 to 10 The elastic member 20 provided in this embodiment is formed with a guide groove 22, and the two side wall ends of the guide groove 22 facing the bottom surface of the notch 11 are formed with a pressing portion 221, and each pressing portion 221 is at least partially movably overlapped. It can be understood that when the PCBA board 30 is not inserted into the guide groove 22, the two pressing portions 221 at least partially overlap each other. Fig. 9As shown; when the PCBA board 30 is gradually inserted along the guide groove 22, the two pressing portions 221 can be separated from each other under the push of the PCBA board 30 until the two pressing portions 221 are connected to the limiting opening 31 opened on the PCBA board 30, and then the two pressing portions 221 penetrate into the limiting opening 31 and the two pressing portions 221 return to a partially overlapping state. In this way, the purpose of preventing the PCBA board 30 from falling out can be achieved based on the card-butt limit between the two pressing portions 221 and the limiting opening 31.

[0052] Embodiment 4

[0053] The difference from the above-mentioned embodiment 1 is that:

[0054] Please also read Figures 11 to 13 The fixing structure 100 further includes a connecting member 40, both ends of which are fixedly connected to one end of each elastic member 20 away from the bottom surface of the notch 11, and each elastic member 20 is formed with a guide groove 22. Preferably, the connecting member 40 and each elastic member 20 are integrally formed.

[0055] In this embodiment, the operation process of the staff fixing the PCBA board 30 vertically to the structural body 10 can be described as follows: the staff first vertically inserts the PCBA board 30 into the mounting groove 12 and makes its bottom surface contact with the notch 11; then, the two elastic members 20 are simultaneously inserted into the corresponding mounting grooves 12, and pressure is applied to the connector 40 until the connector 40 contacts the upper edge of the PCBA board 30, at which time the barb 21 on the elastic member 20 is embedded and fixed to the side wall of the mounting groove 12. In this way, the elastic member 20 and the structural body 10 are interfered with each other through the barb 21, and the connector 40 cooperates with the elastic member 20 to limit the PCBA board 30, thereby preventing the PCBA board 30 from falling out of the mounting groove 12.

[0056] Embodiment 5

[0057] The difference from the above-mentioned embodiment 2 is that:

[0058] Please also read Figures 14 to 17 The structure of the elastic member 20 involved in this embodiment is relatively simple. Specifically, the elastic member 20 forms a limiting portion 23, and the two opposite ends of the limiting portion 23 are formed with barbs 21. The barbs 21 are embedded and fixed on the opposite side surfaces of the mounting groove 12 one by one; a limiting opening 31 is formed on the side of the PCBA board 30 facing the mounting groove 12, and the limiting portion 23 is limitedly abutted in the limiting opening 31, so that on the basis of each barb 21 being embedded and fixed to the corresponding side surface of the mounting groove 12, the PCBA board 30 is fixedly assembled at the structural body 10.

[0059] It can be understood that the operation process of the staff fixing the PCBA board 30 vertically to the structural body 10 in this embodiment can be described as follows: the staff first inserts part of the PCBA board 30 along the installation groove 12 until the limiting opening 31 is about to penetrate into the installation groove 12 and stops; then, the two elastic members 20 are placed at the limiting opening 31, at which time the limiting portion 23 of the elastic member 20 is located inside the limiting opening 31, and the two barbs 21 are located outside the limiting opening 31; then, the PCBA board 30 is continued to be pushed and inserted along the installation groove 12 until the lower edge of the PCBA board 30 is connected to the bottom surface of the recess 11. In this way, each barb 21 is embedded and fixed on the corresponding two side surfaces of the installation groove 12, and the limiting portion 23 of the elastic member 20 is abutted against the limiting opening 31 to limit the position, thereby fixing the elastic member 20, the structural body 10 and the PCBA board 30 into an integrated structure.

[0060] In the above-mentioned embodiments, a fixing structure 100 of a PCBA board 30 is provided, and mounting grooves 12 for vertically inserting the PCBA board 30 are provided on two opposite sides of the notch 11 of the structural body 10, and the barbed portion 21 of the elastic member 20 is embedded and fixed on the side wall of the mounting groove 12, and the elastic member 20 is tightly fixed to the edge of the PCBA board 30. Such a configuration can quickly and vertically fix the PCBA board 30, and the fixation is firm, which can effectively reduce the stress concentration on the components and avoid the tin cracking of the components, and the installation occupies less space.

[0061] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A fixing structure of a PCBA board, characterized in that: include: A structural body (10), wherein the structural body (10) is formed with a notch (11), and two opposite side surfaces of the notch (11) are correspondingly provided with mounting grooves (12); and at least one pair of elastic members (20), each of the elastic members (20) being arranged in a one-to-one correspondence in each of the mounting grooves (12); wherein a barb portion (21) is formed on a side of the elastic member (20) facing the side wall of the mounting groove (12), the barb portion (21) being capable of being embedded and fixed on the side wall of the mounting groove (12), and the elastic member (20) being capable of being tightly fixed against an edge of the PCBA board (30); The two opposite side surfaces of the installation groove (12) are both formed with limiting bosses (13) arranged in a mirror image, and one end of the elastic member (20) facing the bottom surface of the recess (11) can abut against each of the limiting bosses (13); The limiting boss (13) divides the mounting groove (12) into a first groove section and a second groove section, the first groove section is away from the bottom surface of the recess (11), the size of the first groove section is adapted to the size of the elastic member (20), the second groove section is connected to the bottom surface of the recess (11), and the size of the second groove section is adapted to the PCBA board (30).

2. The fixing structure according to claim 1, characterized in that: The elastic member (20) is formed with a guide groove (22), and opposite side walls of the guide groove (22) are provided with pressing portions (221), and the pressing portions (221) are arranged to be inclined toward each other. When the PCBA board (30) is inserted into the guide groove (22), the pressing portions (221) can be tightly pressed and fixed against the edge of the PCBA board (30).

3. The fixing structure according to claim 2, characterized in that: A limiting opening (31) is formed on one side of the PCBA board (30) facing the mounting groove (12), and each of the pressing portions (221) can penetrate into the limiting opening (31).

4. The fixing structure according to claim 1, characterized in that: The elastic member (20) is formed with a guide groove (22), and both side wall ends of the guide groove (22) facing the bottom surface of the recess (11) are formed with pressing portions (221), and each of the pressing portions (221) is at least partially movably overlapped.

5. The fixing structure according to claim 4, characterized in that: A limiting opening (31) is formed on one side of the PCBA board (30) facing the mounting groove (12), and each of the pressing portions (221) can penetrate into the limiting opening (31).

6. The fixing structure according to claim 1, characterized in that: The fixing structure (100) further comprises a connecting member (40), the two ends of which are respectively fixedly connected to an end of each elastic member (20) away from the bottom surface of the recess (11), and each elastic member (20) is formed with a guide groove (22).

7. The fixing structure according to claim 6, characterized in that: The connecting member (40) and each of the elastic members (20) are integrally formed.

8. The fixing structure according to claim 1, characterized in that: The elastic member (20) defines a limiting portion (23), and the two opposite ends of the limiting portion (23) both form the barbed portions (21); a limiting opening (31) is formed on a side of the PCBA board (30) facing the mounting slot (12), the limiting portion (23) is limitedly abutted in the limiting opening (31), and the barbed portions (21) are embedded and fixed in one-to-one correspondence on two opposite side surfaces of the mounting slot (12).

9. The fixing structure according to any one of claims 1 to 8, characterized in that: Embedding notches corresponding to and abutting against each of the barbed portions (21) are respectively formed on the two opposite sides of the installation groove (12); or, the structural body (10) is a plastically deformable structural member.

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