Circuit board assembly fixing structure and electronic device

Abstract

The utility model discloses a kind of circuit board assembly fixing structure and electronic equipment, circuit board assembly fixing structure includes shell, circuit board assembly and locking assembly, shell has inner cavity and the through-hole being communicated with inner cavity, shell includes top plate, the inclined plate being connected with top plate, at least a first support component and at least two second support components, through-hole is located in inclined plate, first support component and second support component all include screw column and at least a first support bone site, first support bone site and screw column are all located on inclined plate, circuit board assembly includes PCBA board and installs display screen on PCBA board, PCBA board is equipped with at least three first perforation for each screw column to be arranged, PCBA board abuts the first inclined end surface of first support bone site, display screen corresponds with through-hole;Locking assembly includes at least three inclined fixed blocks and at least three fasteners, inclined fixed block is equipped with second perforation, fastener is connected with screw column by passing through second perforation, inclined fixed block is equipped with the second inclined end surface of abutting PCBA board.

Description

Technical Field

[0001] This utility model relates to the field of electronic device structure technology, and in particular to a circuit board assembly fixing structure and electronic device. Background Technology

[0002] PCBA board, or printed circuit board, is a type of printed circuit board. In current technology, the display screen is usually soldered onto the PCBA board, and then the PCBA board is fixed to the screw posts inside the housing. The display screen is located in the through holes of the housing. From the final finished product, the display screen is installed on the housing in a horizontal or vertical position along with the PCBA board. If the display screen needs to be installed at an angle on the inclined plate of the housing, the corresponding screw posts inside the housing need to be beveled.

[0003] However, in this structural design, the end face of the screw post that contacts the inclined PCBA board needs to be beveled to press the PCBA board firmly. This beveled end face can only meet the requirement of a small slope, and it will be difficult to fill the plastic during injection molding, which can easily produce sharp edges that can scratch fingers. At the same time, because the end face of the screw post is beveled, once the ejector sleeve used to make the screw post on the mold rotates, the produced screw post cannot be assembled with the corresponding PCBA board, which is prone to errors and places high demands on the mold processing technology and assembly. Utility Model Content

[0004] This utility model provides a circuit board assembly fixing structure and electronic device, aiming to solve the problem in the prior art where, when the display screen is installed at an angle on the inclined plate of the housing, the corresponding screw posts inside the housing need to be beveled. In this structural design, the end face of the screw post that contacts the inclined PCBA board needs to be beveled to press the PCBA board firmly. This beveled end face can only meet the requirement of a small angle, and it is difficult to fill during plastic injection molding, which can easily produce sharp edges that can scratch fingers. At the same time, because the end face of the screw post is beveled, once the ejector sleeve used to make the screw post on the mold rotates, the produced screw post cannot be assembled with the corresponding PCBA board, which is prone to errors and requires high technical skills in mold processing and assembly.

[0005] This utility model is implemented as follows: This utility model provides a circuit board assembly fixing structure, including: A housing, having an inner cavity and a through hole communicating with the inner cavity, the housing comprising a top plate, at least one inclined plate arranged obliquely and connected to the top plate, at least one first support assembly located in the inner cavity, and at least two second support assemblies both located in the inner cavity, the through hole penetrating through the inclined plate, each of the first support assembly and the second support assemblies comprising a screw post and at least one first support rib connected to the screw post, the first support rib and the screw post both protruding from the inclined plate, and a side of the first support rib away from the inclined plate is provided with a first oblique end face parallel to the inclined plate; A circuit board assembly, comprising a PCBA board and a display screen mounted on the PCBA board, the PCBA board being provided with at least three first through holes, each of the screw posts passing through a respective one of the first through holes, the PCBA board abutting against the first oblique end face, and the display screen being arranged corresponding to the through hole; A locking assembly, comprising at least three oblique fixing blocks and at least three fasteners, the oblique fixing block being provided with a second through hole, the fastener passing through the second through hole and then being in threaded connection with the screw post, and the oblique fixing block being provided with a second oblique end face parallel to the inclined plate, the second oblique end face abutting against the PCBA board.

[0006] Further, a side of the oblique fixing block facing the inclined plate is provided with a receiving groove, the second through hole penetrates through the oblique fixing block from the bottom wall of the receiving groove, and a portion of the screw post is located in the receiving groove.

[0007] Further, each of the first support assembly and the second support assemblies further comprises a first support member, the first support member comprising a second support rib and a limiting block, the second support rib protruding from the inclined plate and connected to the corresponding screw post, the second support rib being provided with a third oblique end face parallel to the inclined plate, the limiting block protruding from the third oblique end face and connected to the screw post, the PCBA board being further provided with at least three limiting holes respectively communicating with each of the first through holes, the oblique fixing block being further provided with a single groove communicating with the receiving groove, the limiting block passing through the corresponding limiting hole and then being inserted into the single groove, and the PCBA board abutting against the third oblique end face.

[0008] Further, the number of the first support assembly is one, the number of the second support assemblies is two, and the one first support assembly and the two second support assemblies are arranged in a triangular shape.

[0009] Furthermore, the first support assembly has three first support ribs, one of which is located on the side of the corresponding screw post facing the top plate, and the other two are located on the two sides of the screw post in the horizontal direction, respectively. The first support member is located on the side of the corresponding screw post away from the top plate.

[0010] Furthermore, the second support assembly has two first support ribs, one of which is located on the side of the corresponding screw post facing the top plate, and the other first support rib is located in the horizontal direction on the side of the corresponding screw post facing the other screw post, and the first support member is located on the side of the corresponding screw post away from the top plate.

[0011] Furthermore, the second support assembly also includes a second support member, which includes a third support rib and a positioning rod. The third support rib protrudes from the inclined plate and is connected to the corresponding screw post. The third support rib is located on the side of the corresponding screw post away from the other screw post in the horizontal direction. The third support rib has a fourth inclined end face parallel to the inclined plate. The positioning rod protrudes from the fourth inclined end face. The PCBA board also has at least two positioning holes. Each positioning rod is inserted into each positioning hole. The PCBA board abuts against the fourth inclined end face.

[0012] Furthermore, the number of inclined plates is one, and the outer shell also includes a bottom plate and a plurality of side plates connected in sequence. The top of the inclined plate and the top of each side plate are connected to the top plate, the bottom of the inclined plate and the bottom of each side plate are connected to the bottom plate, and the left and right ends of the inclined plate are respectively connected to the corresponding side plates.

[0013] Furthermore, the circuit board assembly fixing structure also includes a lens located outside the inner cavity, the inclined plate is also provided with a positioning groove, the through hole extends from the bottom wall of the positioning groove to the inner wall of the inner cavity, and the lens is installed in the positioning groove.

[0014] This invention also provides an electronic device, including the circuit board assembly fixing structure as described above.

[0015] Compared with the prior art, the beneficial effects of this utility model include at least the following: The screw posts in the outer shell of this utility model are not beveled. The circuit board assembly fixing structure can install the display screen on the PCBA board onto the outer shell in an inclined state. The plastic injection filling is simple, and it is not easy to produce blade edges that will scratch fingers. At the same time, since the end face of the screw post has no bevel, with the use of the inclined fixing block, it effectively solves many limitations and service life problems of the mold, reduces the design requirements of the sleeve used to make the screw post in the mold, and can meet the appearance shape of the display screen at any angle. It can easily solve the problems of such large bevels and directional requirements of the display, and reduces the processing technology and assembly requirements of the mold, making it suitable for widespread promotion. Attached Figure Description

[0016] Figure 1 A partial structural diagram of the circuit board assembly fixing structure provided in this embodiment of the utility model. Figure 1 ; Figure 2 A partial structural diagram of the circuit board assembly fixing structure provided in this embodiment of the utility model. Figure 2 ; Figure 3 for Figure 2 Exploded view; Figure 4 A schematic diagram of the structure of the face shell provided in the embodiment of this utility model. Figure 1 ; Figure 5 A schematic diagram of the structure of the face shell provided in the embodiment of this utility model. Figure 2 ; Figure 6 This is a schematic diagram of the circuit board assembly provided in an embodiment of the present utility model; Figure 7 This is a schematic diagram of the inclined fixing block provided in an embodiment of the present utility model.

[0017] In the picture: 10. Outer shell; 11. Through hole; 12. Top plate; 13. Inclined plate; 131. Positioning groove; 14. First support assembly; 141. Screw post; 142. First support rib; 1421. First inclined end face; 143. First support member; 1431. Second support rib; 1432. Limiting block; 1433. Third inclined end face; 15. Second support assembly; 151. Second support member; 1511. Third support rib; 1512, Positioning rod; 1513, Fourth inclined end face; 16, Face shell; 20, Circuit board assembly; 21, PCBA board; 211, First through hole; 212, Limiting hole; 213, Positioning hole; 22, Display screen; 30, Locking assembly; 31, Inclined fixing block; 311, Second through hole; 312, Second inclined end face; 313, Receiving groove; 314, Single groove; 3141, Chamfer; 32, Fastener; 40, Lens. Detailed Implementation

[0018] Hereinafter, the present utility model is further described with reference to the accompanying drawings and specific embodiments. It should be noted that, on the premise of no conflict, the various embodiments or various technical features described below can be arbitrarily combined to form new embodiments.

[0019] Please refer to Figures 1 to 7 as shown in the figure, an embodiment of the present utility model discloses a fixing structure for a circuit board assembly, which is mainly applied in electronic equipment. The fixing structure for a circuit board assembly includes a housing 10, a circuit board assembly 20 and a locking assembly 30. The housing 10 has an inner cavity and a through hole 11 communicating with the inner cavity, the inner cavity is arranged inside the housing 10. The housing 10 includes a top plate 12, at least one obliquely arranged inclined plate 13, at least one first support assembly 14 located inside the inner cavity, and at least two second support assemblies 15 both located inside the inner cavity. The top of the inclined plate 13 is connected to the top plate 12, the inclined plate 13 and the top plate 12 form a face shell 16, and the through hole 11 is transversely penetratingly arranged on the inclined plate 13. Each of the first support assembly 14 and the second support assembly 15 includes a screw post 141 and at least one first supporting rib 142 connected to the outer side wall of the screw post 141. Both the first supporting rib 142 and the screw post 141 are protrudingly arranged on the inclined plate 13, the length of the first supporting rib 142 is smaller than the length of the screw post 141. The side end of the first supporting rib 142 away from the inclined plate 13 is provided with a first inclined end surface 1421 arranged parallel to the inclined plate 13. The screw post 141 in the housing 10 is not beveled, so a sharp edge is unlikely to appear, and fingers will not be scratched.

[0020] The number of the first support assembly 14 is one, and the number of the second support assemblies 15 is two. The one first support assembly 14 and the two second support assemblies 15 are arranged in a triangular "pin" shape, wherein the second support assemblies 15 are located above the first support assembly 14, and each of the first support assembly 14 and each of the second support assemblies 15 are all arranged around the through hole 11.

[0021] The circuit board assembly 20 includes a PCBA board 21 and a display screen 22 mounted on the PCBA board 21. The PCBA board 21 is provided with at least three first through holes 211, specifically, the number of the first through holes 211 is three. Each screw post 141 passes through each first through hole 211 respectively, and the PCBA board 21 abuts against each first inclined end surface 1421. At this time, the PCBA board 21 is arranged in an inclined state, the display screen 22 is arranged corresponding to the through hole 11, and the display screen 22 can be inserted into the through hole 11.

[0022] The locking assembly 30 includes at least three inclined fixing blocks 31 and at least three fasteners 32. The number of inclined fixing blocks 31 and fasteners 32 is three. The inclined fixing blocks 31 are provided with a second through hole 311 through their axial direction. The fasteners 32 pass through the second through hole 311 and are threadedly connected to the screw post 141. The inclined fixing blocks 31 are provided with a second inclined end face 312 parallel to the inclined plate 13 on one side. The second inclined end face 312 abuts against the PCBA board 21, thereby fixing the PCBA board 21 at an angle to the housing 10. This can meet the appearance shape of the display screen 22 at any angle and can easily solve the problem of such large inclined surfaces and the requirement for the direction of the display. It reduces the processing technology and assembly requirements of the mold and is suitable for widespread promotion. The fasteners 32 are capped screws.

[0023] In some embodiments, the inclined fixing block 31 is provided with a receiving groove 313 on the side facing the inclined plate 13, that is, the receiving groove 313 is recessed on the second inclined end face 312, and the second through hole 311 passes through the bottom wall of the receiving groove 313 into the inclined fixing block 31. The second through hole 311 and the receiving groove 313 are coaxially arranged, and the screw post 141 is partially located in the receiving groove 313 to facilitate the assembly of the inclined fixing block 31, so that the fastener 32 can quickly pass through the second through hole 311 and be threadedly connected to the screw post 141.

[0024] In this embodiment, both the first support assembly 14 and the second support assembly 15 further include a first support member 143. The first support member 143 includes a second support rib 1431 and a limiting block 1432. The second support rib 1431 protrudes from the inclined plate 13 and is connected to the outer wall of the corresponding screw post 141. The second support rib 1431 has a third inclined end face 1433 parallel to the inclined plate 13. The third inclined end face 1433 is located on the side of the second support rib 1431 away from the inclined plate 13. The limiting block 1432 protrudes from the third inclined end face 1433. The limiting block 1432 is connected to the outer wall of the screw post 141. The width of the limiting block 1432 is smaller than the width of the second support bone 1431. The PCBA board 21 is also provided with at least three limiting holes 212 that are respectively connected to each of the first through holes 211. The number of limiting holes 212 is three. The inclined fixing block 31 is also provided with a single groove 314 that is connected to the receiving groove 313. The single groove 314 extends from the inner side wall of the receiving groove 313 to the outer side wall of the inclined fixing block 31. The limiting block 1432 passes through the corresponding limiting hole 212 and is inserted into the single groove 314 to play the role of preventing fooling and limiting rotation. The PCBA board 21 abuts against the third inclined end face 1433.

[0025] In some embodiments, the two ends of the single groove 314 are also provided with chamfers 3141 with guiding function so that the limiting block 1432 can be quickly inserted into the single groove 314.

[0026] In this embodiment, the structures of the first support component 14 and the second support component 15 are different. Specifically, in the first support component 14, the number of first support bone positions 142 is three. Figure 2 Based on this, one of the first support ribs 142 is located on the side of the corresponding screw post 141 facing the top plate 12, and the other two first support ribs 142 are located on both sides of the screw post 141 in the horizontal direction. The first support member 143 is located on the side of the corresponding screw post 141 away from the top plate 12. The first support member 143 and the three first support ribs 142 are all connected to the outer side wall of the corresponding screw post 141 to support the PCBA board 21.

[0027] In the second support assembly 15, there are two first support ribs 142. One first support rib 142 is located on the side of the corresponding screw post 141 facing the top plate 12, and the other first support rib 142 is located in the horizontal direction on the side of the corresponding screw post 141 facing the other screw post 141. The first support member 143 is located on the side of the corresponding screw post 141 away from the top plate 12. The first support member 143 and the two first support ribs 142 are all connected to the outer wall of the corresponding screw post 141 to support the PCBA board 21.

[0028] The second support assembly 15 also includes a second support member 151, while the first support assembly 14 does not have a second support member 151. The second support member 151 includes a third support rib 1511 and a positioning rod 1512. The third support rib 1511 protrudes from the inclined plate 13 and is connected to the outer wall of the corresponding screw post 141. The length of the third support rib 1511 is smaller than the length of the screw post 141. The third support rib 1511 is located horizontally away from the other screw post 141. On one side of 141, the third support rib 1511 is provided with a fourth inclined end face 1513 parallel to the inclined plate 13. The positioning rod 1512 protrudes from the fourth inclined end face 1513. The PCBA board 21 is also provided with at least two positioning holes 213. The number of positioning holes 213 is two. Each positioning rod 1512 is inserted into each positioning hole 213 to limit the PCBA board 21. The PCBA board 21 abuts against the fourth inclined end face 1513. The four support ribs limit the height of the PCBA board 21.

[0029] In this embodiment, there is one inclined plate 13. The outer shell 10 also includes a bottom plate and a plurality of side plates connected in sequence. The bottom plate is arranged opposite to the top plate 12. The top of the inclined plate 13 and the top of each side plate are connected to the top plate 12. The bottom of the inclined plate 13 and the bottom of each side plate are connected to the bottom plate. The left and right ends of the inclined plate 13 are respectively connected to the corresponding side plates to form the outer shell 10 described above. Of course, the outer shell 10 can also be in other structural forms.

[0030] The circuit board assembly fixing structure also includes a lens 40 located outside the inner cavity. The outer wall of the inclined plate 13 is also provided with a positioning groove 131. The through hole 11 extends from the bottom wall of the positioning groove 131 to the inner wall of the inner cavity. The lens 40 is installed in the positioning groove 131. The lens 40 can be used to see through the display content on the display screen 22 and also plays a protective role for the display screen 22.

[0031] This utility model also discloses an electronic device, including the circuit board assembly fixing structure as described above. The electronic device can be a speaker, control panel, etc. When the electronic device is a speaker, it also includes a loudspeaker. The loudspeaker is installed on the mounting hole of the housing 10 and is electrically connected to the PCBA board 21. The circuit board assembly fixing structure can well meet the product requirements for products with large bevels on the appearance, or even products with display PCBA parts.

[0032] The assembly method for the circuit board assembly fixing structure includes the following steps: Step S101: Install the circuit board assembly 20 onto the faceplate 16, wherein each screw post 141 of the first support assembly 14 and the second support assembly 15 is inserted into each first through hole 211 of the PCBA board 21, each limiting block 1432 passes through each limiting hole 212, each positioning rod 1512 is inserted into each positioning hole 213, the first inclined end face 1421 of each first support rib 142, the third inclined end face 1433 of each second support rib 1431 and the fourth inclined end face 1513 of each third support rib 1511 all abut against one side of the PCBA board 21, and the display screen 22 in the circuit board assembly 20 is correspondingly set with the through hole 11 in the faceplate 16; Step S102: Install each inclined fixing block 31 onto the face shell 16 of step S101. The screw post 141 passes through the first through hole 211 and is inserted into the receiving groove 313 of the corresponding inclined fixing block 31. The limiting block 1432 passes through the corresponding limiting hole 212 and is inserted into the single groove 314 of the inclined fixing block 31. The second inclined end face 312 of the inclined fixing block 31 abuts against the other side of the PCBA board 21. Step S103: Install each fastener 32 onto the faceplate 16 of step S102. After passing through the corresponding second through hole 311, the fastener 32 is threadedly connected to the screw post 141. Step S104: Install the lens 40 onto the faceplate 16 of step S103. Install the lens 40 into the positioning groove 131 of the faceplate 16 with glue to complete the assembly of the relevant parts of the product.

[0033] In summary, the screw post 141 in the outer shell 10 of this utility model is not beveled. The circuit board assembly fixing structure can install the display screen 22 on the PCBA board 21 at an angle on the outer shell 10. The plastic injection filling is simple, and it is not easy to produce blade edges that will scratch fingers. At the same time, since the end face of the screw post 141 has no bevel, with the cooperation of the inclined fixing block 31, it effectively solves many limitations and service life problems in the mold, reduces the design requirements of the sleeve used to make the screw post 141 in the mold, and can meet the appearance shape of the display screen 22 at any angle. It can easily solve the problems of large bevels and directional requirements for the display, reduces the processing technology and assembly requirements of the mold, and is suitable for widespread promotion.

[0034] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A circuit board assembly fixing structure, characterized in that, comprising: a housing, which is provided with an inner cavity and a through hole communicating with the inner cavity, the housing comprising a top plate, at least one inclined plate disposed obliquely and connected to the top plate, at least one first support assembly located in the inner cavity, and at least two second support assemblies both located in the inner cavity, the through hole penetrates through the inclined plate, each of the first support assembly and the second support assemblies comprises a screw post and at least one first supporting rib connected to the screw post, the first supporting rib and the screw post are both protrudingly disposed on the inclined plate, and a side of the first supporting rib away from the inclined plate is provided with a first inclined end surface parallel to the inclined plate; a circuit board assembly, comprising a PCBA board and a display screen mounted on the PCBA board, the PCBA board is provided with at least three first through holes, each of the screw posts passes through a respective one of the first through holes, the PCBA board abuts against the first inclined end surface, and the display screen is disposed in correspondence with the through hole; a locking assembly, comprising at least three inclined fixing blocks and at least three fasteners, the inclined fixing block is provided with a second through hole, the fastener passes through the second through hole and is then in threaded connection with the screw post, the inclined fixing block is further provided with a second inclined end surface parallel to the inclined plate, and the second inclined end surface abuts against the PCBA board.

2. The circuit board assembly fixing structure according to claim 1, characterized in that, A side of the inclined fixing block facing the inclined plate is provided with a receiving groove, the second through hole penetrates through the inclined fixing block from the bottom wall of the receiving groove, and a part of the screw post is located in the receiving groove.

3. The circuit board assembly fixing structure according to claim 2, characterized in that, Each of the first support assembly and the second support assemblies further comprises a first supporting member, the first supporting member comprises a second supporting rib and a limiting block, the second supporting rib is protrudingly disposed on the inclined plate and connected to the corresponding screw post, the second supporting rib is provided with a third inclined end surface parallel to the inclined plate, the limiting block is protrudingly disposed on the third inclined end surface and connected to the screw post, the PCBA board is further provided with at least three limiting holes respectively communicating with the respective first through holes, the inclined fixing block is further provided with a single groove communicating with the receiving groove, the limiting block passes through the corresponding limiting hole and then is inserted into the single groove, and the PCBA board abuts against the third inclined end surface.

4. The circuit board assembly fixing structure according to claim 3, characterized in that, The number of the first support assembly is one, the number of the second support assemblies is two, and the one first support assembly and the two second support assemblies are arranged in a triangular shape.

5. The circuit board assembly fixing structure according to claim 4, characterized in that, The number of the first supporting ribs in the first support assembly is three, one of the first supporting ribs is located on a side of the corresponding screw post facing the top plate, the other two first supporting ribs are respectively located at two side ends of the screw post in the horizontal direction, and the first supporting member is located on a side of the corresponding screw post away from the top plate.

6. The circuit board assembly fixing structure according to claim 4, characterized in that, The number of the first supporting ribs in each second support assembly is two, one of the first supporting ribs is located on a side of the corresponding screw post facing the top plate, the other first supporting rib is located on a side of the corresponding screw post facing the other screw post in the horizontal direction, and the first supporting member is located on a side of the corresponding screw post away from the top plate.

7. The circuit board assembly fixing structure according to claim 6, characterized in that, The second support assembly further includes a second support member, which includes a third support rib and a positioning rod. The third support rib protrudes from the inclined plate and is connected to the corresponding screw post. The third support rib is located on the side of the corresponding screw post away from the other screw post in the horizontal direction. The third support rib has a fourth inclined end face parallel to the inclined plate. The positioning rod protrudes from the fourth inclined end face. The PCBA board also has at least two positioning holes. Each positioning rod is inserted into each positioning hole. The PCBA board abuts against the fourth inclined end face.

8. The circuit board assembly fixing structure according to claim 1, characterized in that, The number of inclined plates is one. The outer shell also includes a bottom plate and a plurality of side plates connected in sequence. The top of the inclined plate and the top of each side plate are connected to the top plate. The bottom of the inclined plate and the bottom of each side plate are connected to the bottom plate. The left and right ends of the inclined plate are respectively connected to the corresponding side plates.

9. The circuit board assembly fixing structure according to claim 1, characterized in that, The circuit board assembly fixing structure also includes a lens located outside the inner cavity. The inclined plate is also provided with a positioning groove. The through hole extends from the bottom wall of the positioning groove to the inner wall of the inner cavity. The lens is installed in the positioning groove.

10. An electronic device, characterized in that, Includes the circuit board assembly fixing structure as described in any one of claims 1-9.

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