Pre-installable shielding case of navigation host circuit board

Abstract

The utility model provides a protective cover for a navigation host circuit board and a preinstallable shielding cover for the navigation host circuit board, which comprises a shielding cover body, two opposite side walls of the shielding cover body are provided with one or more limiting mechanisms, and each limiting mechanism comprises a limiting notch and a limiting block. The bottoms of the limiting blocks extend upwards and inwards from the limiting notches, clamping and positioning areas are formed between the limiting blocks and the side walls of the shielding case body, the limiting mechanisms on the two opposite side walls of the shielding case body are correspondingly arranged, installation is convenient, and the service life is long.

Description

TECHNICAL FIELD

[0001] The utility model relates to navigation protective cover technical field, concretely relates to a preinstallable shield cover of navigation mainframe circuit board. BACKGROUND

[0002] The navigation mainframe circuit board is the core component of the automobile navigation system, and a plurality of precise electronic elements and complex circuit designs are integrated inside, however, the circuit board will face a variety of potential threats during vehicle use, including dust, moisture and physical impact, these factors can cause damage to sensitive elements on the circuit board, affect the normal work of the navigation system, therefore, it is a necessary protective measure to equip the navigation mainframe circuit board with a protective cover.

[0003] When installing the protective cover, the installation position of the protective cover and the circuit board needs to be aligned to ensure that the key parts on the circuit board can be covered, and at the same time, to avoid extrusion to the original elements on the circuit board, if there is no preinstallation structure, the installer must rely on manual operation to complete the alignment, which not only increases the time cost of installation, but also increases the risk of error.

[0004] As disclosed in the patent document with patent application number 202420993370.9 and publication date of 2024.12.20, a vehicle-mounted data recorder shell includes an upper shell with two openings, a bottom plate arranged at the lower end opening of the upper shell, and a connector panel arranged at the opening adjacent to the bottom plate of the upper shell. Both side walls of the upper shell away from each other are provided with mounting feet, the lower end surface of the mounting feet is lower than the lower end surface of the bottom plate, and the circuit board is arranged in the inner cavity of the upper shell. In the installation process, the lower end of the bottom plate does not directly contact the structure of the vehicle, so that the vibration generated when the vehicle collides will not be directly transmitted to the circuit board through the bottom plate, so that the electronic components on the circuit board are not easily impacted by the bottom plate, thereby improving the service life of the circuit board.

[0005] In the above document, when the upper shell and the bottom plate are fixed, since no preinstallation position is provided, the upper shell and the bottom plate may have difficulty in alignment or insufficient installation precision when fixed, and when the upper shell and the bottom plate are aligned and fastened, mounting blocks are arranged on the upper shell, mounting holes are arranged on the mounting blocks, and then mounting holes are arranged on the bottom plate to achieve fastening. However, this requires the mounting holes on the upper shell and the mounting blocks to be aligned before installation, which makes installation inconvenient, and if the mounting holes on the bottom plate do not correspond to the mounting holes on the upper shell, the bottom plate and the upper shell cannot be installed, which reduces the universality of the upper shell. SUMMARY

[0006] The utility model provides a preinstallable shield cover of navigation mainframe circuit board, convenient installation, good universality.

[0007] The utility model discloses a pre-installable shielding cover of navigation mainframe circuit board, including shielding cover body, more than one limiting mechanism is arranged on the two opposite side walls of shielding cover body, the limiting mechanism includes limiting gap and limiting block, the bottom of limiting block is arranged to extend upwards and inwards from limiting gap, and the limiting block and the side wall of shielding cover body form clamping positioning area, and the limiting mechanism on the two opposite side walls of shielding cover body is correspondingly arranged.

[0008] The above arrangement sets limiting mechanism on the two opposite side walls of shielding cover body, and limiting block is arranged on limiting gap and extends upwards and inwards from limiting gap, when shielding cover body is connected with navigation mainframe circuit board, only need to place the edge of navigation mainframe circuit board in the clamping positioning area between limiting block and the side wall of shielding cover body, that is, the bottom surface of navigation mainframe circuit board abuts against limiting block when placing, and the other side surface of navigation mainframe circuit board abuts against the first plate body, and the positioning of navigation mainframe circuit board is completed, which facilitates the fastening process in the later period.

[0009] And limiting block is arranged on shielding cover body, and only need to align the edge of navigation mainframe circuit board with limiting block and enter clamping positioning area, without setting the positioning mechanism matched with each other on plate body and navigation mainframe circuit board, which greatly improves the generalization degree.

[0010] Further, the shielding cover body is provided with a plate body around, the plate body includes a first plate body and a second plate body, the first plate body and the second plate body are oppositely arranged, and limiting mechanism is arranged on the first plate body and the second plate body, and the limiting block forms a clamping positioning area with the first plate body and the second plate body respectively.

[0011] The above arrangement sets limiting mechanism on the two opposite first plate body and second plate body of shielding cover body, so that the two sides of navigation mainframe circuit board can be clamped, and the structure is simple and reliable.

[0012] Further, the second plate body is provided with an avoiding opening in the middle, a second positioning plate is arranged on the second plate body on one side of the avoiding opening, a second positioning hole is arranged on the second positioning plate, and a second groove is arranged on one side of the second positioning hole.

[0013] The above arrangement sets avoiding opening in the middle of the second plate body, which is convenient for the connecting wire on the circuit board to pass through, sets the second positioning hole, which is convenient for the fastener such as screw to pass through the second positioning plate and be fixedly connected with the navigation mainframe circuit board, sets the second groove to prevent stress concentration from causing the problem of the protrusion of the second plate body during the fixed installation of the second plate body, and the cross-sectional shape of the plate body can be changed, when the plate body is subjected to torsional force, the second groove will generate resistance to torsional deformation, preventing the plate body from being easily twisted.

[0014] Further, the second positioning plate extends outward from the top end of the second plate body, and the second groove extends from the second positioning plate to the second plate body.

[0015] The second positioning plate extends outward from the top end of the second plate body, without occupying the internal space of the shielding cover, and provides a wider operation space for the operator. The second groove changes the cross-sectional shape of the second positioning plate and the second plate body, and enhances the torsion resistance of the second positioning plate and the second plate body.

[0016] Further, the plate body further comprises two oppositely arranged third plate bodies, the two third plate bodies and the first plate body and the second plate body form a frame structure of the shielding cover, the third plate body is provided with a third positioning plate, the third positioning plate is provided with a third positioning hole, and the third positioning hole is provided with a third groove on both sides.

[0017] The third positioning hole facilitates the connection of the fastener such as a screw between the third positioning plate and the navigation host circuit board, and the third groove is arranged to improve the torsion resistance of the plate body by changing the cross-sectional shape of the plate body. When the plate body is subjected to a torsion force, the third groove generates resistance to torsional deformation, preventing the plate body from being easily twisted.

[0018] Further, the third positioning plate extends outward from the top end of the third plate body, and the third groove extends from the third positioning plate to the third plate body.

[0019] The third positioning plate extends outward from the top end of the third plate body, without occupying the internal space of the shielding cover, and provides a wider operation space for the operator. The third groove extends from the third positioning plate to the third plate body, and changes the cross-sectional shape of the third positioning plate and the third plate body, and enhances the torsion resistance of the third positioning plate and the third plate body.

[0020] Further, the third plate body is provided with a heat dissipation hole corresponding to the two sides of the third groove.

[0021] In the case of long-term work of the navigation host circuit board, the heat dissipation hole can enhance air circulation and help dissipate heat, preventing performance degradation or damage caused by overheating.

[0022] Further, one side of the third positioning plate is further provided with a fourth positioning plate, the fourth positioning plate extends outward from the third plate body, and the fourth positioning plate is provided with a fourth positioning hole.

[0023] The fourth positioning hole is arranged to facilitate the fastener, such as a screw, to pass through the fourth positioning plate and be connected with the navigation host circuit board, the fourth connecting plate is arranged, which is equivalent to increasing a connection position between the navigation host circuit board and the shielding cover body, and the navigation host circuit board is more firmly connected with the shielding cover body.

[0024] Further, the fourth positioning plate and the third plate body are connected at the fourth recess.

[0025] The fourth recess makes the connection between the fourth positioning plate and the third plate body more firm, when an external force acts, the fourth recess can disperse stress, and reduce the risk of deformation or damage caused by excessive local stress.

[0026] Further, the adjacent plate bodies are provided with through grooves.

[0027] The first plate body, the second plate body and the third plate body are integrally formed by stamping the shielding cover body. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 The utility model discloses a shielding cover body Figure 1 .

[0029] Figure 2 The utility model discloses a shielding cover body Figure 1 The utility model discloses a shielding cover body

[0030] Figure 3 The utility model discloses a shielding cover body Figure 2 .

[0031] Figure 4 The utility model discloses a shielding cover body Figure 1 The utility model discloses a shielding cover body

[0032] Explanation of reference numerals: 1-shielding cover body;2-plate body;21-first plate body;22-second plate body;221-avoidance opening;23-third plate body;3-limiting mechanism;31-limiting gap;32-limiting block;4-through groove;5-second positioning plate;51-second recess;52-second positioning hole;6-third positioning plate;61-third positioning hole;62-third recess;7-fourth positioning plate;71-fourth positioning hole;72-fourth recess. DETAILED DESCRIPTION

[0033] Example one.

[0034] As Figures 1-3As shown, a pre-installable shielding cover for navigation mainframe circuit board comprises a shielding cover body 1, which is provided with a plate body 2 around, the plate body 2 comprises a first plate body 21, a second plate body 22, two oppositely arranged third plate bodies 23, the first plate body 21 and the second plate body 22 are correspondingly arranged, and a limiting mechanism 3 is arranged on the first plate body 21 and the second plate body 22.

[0035] The second plate body 22 is provided with an avoiding opening 2221 in the middle, and a second positioning plate 5 is arranged on one side of the second plate body 22, the second positioning plate 5 is provided with a second positioning hole 52, and a second groove 51 is arranged on one side of the second positioning hole 52, the avoiding opening 2221 arranged in the middle of the second plate body 22 facilitates the connection line on the circuit board to pass through, the second positioning hole 52 is arranged to facilitate the fastener such as screw to pass through the second positioning plate 5 and be connected with the navigation mainframe circuit board, and the second groove 51 is arranged to improve the torsional resistance of the plate body 2, the cross-sectional shape of the plate body 2 can be changed, when the plate body 2 is subjected to a torsional force, the second groove 51 will generate resistance to torsional deformation, preventing the plate body 2 from easily twisting.

[0036] The second positioning plate 5 extends outward from the top end of the second plate body 22, the second groove 51 extends from the second positioning plate 5 to the second plate body 22, and the second positioning plate 5 extends outward from the top end of the second plate body 22, without occupying the internal space of the shielding cover body 1, and can provide more spacious operating space for the operator, the second groove 51 changes the cross-sectional shape of the second positioning plate 5 and the second plate body 22 at the same time, and enhances the torsional resistance of the second positioning plate 5 and the second plate body 22.

[0037] The second plate body 22 is provided with a limiting gap 31 and a limiting block 32 on the side corresponding to the second groove 51, and the reasonable arrangement of the limiting gap 31 and the limiting block 32 helps to optimize the structural layout of the plate body 2, so that the arrangement of each component on the plate body 2 is more compact and reasonable.

[0038] The height and size of the limiting mechanism on the first plate body 21 and the second plate body 22 are the same, which can enable multiple limiting mechanisms to limit the circuit board at the same height, so that the limiting plate is in a horizontal state, and the second groove 51 is formed by being recessed inward from the second positioning plate 5.

[0039] As Figure 1As shown, the third plate body 23 is provided with a third positioning plate 6, the third positioning plate 6 is provided with a third positioning hole 61, and the third positioning hole 61 is provided with a third groove 62 on both sides. The third positioning hole 61 facilitates the connection of fasteners such as screws between the third positioning plate 6 and the navigation host circuit board. The third groove 62 is provided to improve the torsional resistance of the plate body 2. By changing the cross-sectional shape of the plate body 2, when the plate body 2 is subjected to a torsional force, the third groove 62 will generate resistance to torsional deformation, preventing the plate body 2 from easily twisting. The third groove 62 is recessed inward from the third positioning plate 6.

[0040] The third positioning plate 6 extends outward from the top end of the third plate body 23, and the third groove 62 extends from the third positioning plate 6 to the third plate body 23. The third positioning plate 6 extends outward from the top end of the third plate body 23 without occupying the internal space of the shielding cover body 1, and can provide more spacious operating space for the operator. The third groove 62 extends from the third positioning plate 6 to the third plate body 23, which changes the cross-sectional shape of the third positioning plate 6 and the third plate body 23, and enhances the torsional resistance of the third positioning plate 6 and the third plate body 23.

[0041] The third plate body 23 is provided with a heat dissipation hole corresponding to the two sides of the third groove 62. In the case of long-term operation of the navigation host circuit board, the heat dissipation hole can enhance air circulation and help dissipate heat, preventing performance degradation or damage caused by overheating.

[0042] A through slot 4 is provided between the two adjacent plate bodies 2 to facilitate the stamping of the first plate body 21, the second plate body 22 and the third plate body 23 as an integral part of the shielding cover body 1.

[0043] As shown in the drawings, Figure 2 The limiting mechanism 3 includes a limiting gap 31 and a limiting block 32. The limiting block 32 extends upward and inward from the limiting gap 31 at the bottom. The limiting block 32 forms a clamping and positioning area with the first plate body 21 and the second plate body 22, respectively. The limiting mechanism 3 is provided correspondingly.

[0044] In this embodiment, two limiting gaps 31 and limiting blocks 32 are provided on the first plate body 21 and the second plate body 22, respectively.

[0045] As shown in the drawings, Figure 3As shown, one third positioning plate 6 side is further provided with fourth positioning plate 7, the height of the top surface of fourth positioning plate 7 is lower than the height of the top surface of third positioning plate 6, so as to facilitate fixing from different heights, fourth positioning plate 7 extends from third plate body 23 to the outside, fourth positioning plate 7 is provided with fourth positioning hole 71, fourth positioning hole 71 is provided to facilitate the fastener such as screw to pass through fourth positioning plate 7 and be connected with navigation host circuit board, fourth connecting plate is arranged, which is equivalent to increase a connecting position between navigation host circuit board and shielding cover body 1, so that the connection between navigation host circuit board and shielding cover body is more firm.

[0046] The connecting portion of fourth positioning plate 7 and third plate body 23 is provided with fourth groove 72, fourth groove 72 makes the connection between fourth positioning plate 7 and third plate body 23 more firm, when subjected to external force, fourth groove 72 can disperse stress, reduce the risk of deformation or damage caused by excessive local stress.

[0047] The working principle of the utility model is: two limiting notches 31 are arranged on first plate body 21 and second plate body 22 respectively, limiting block 32 is arranged on limiting notch 31, and limiting block 32 extends upwards and inwards from limiting notch 31, when shielding cover body 1 is connected with navigation host circuit board, taking first plate body 21 as an example, only need to place the edge of navigation host circuit board in the clamping positioning area formed by limiting block 32 and first plate body 21, that is, abut the side surface of navigation host circuit board with limiting block 32 when placing, abut the other side surface of navigation host circuit board with first plate body 21, complete the positioning of navigation host circuit board, facilitate the fastening process in later period;

[0048] And limiting block 32 is arranged on first plate body 21 and second plate body 22, only need to align the edge of navigation host circuit board with limiting block 32 to enter the clamping positioning area, without the need of setting mutually matched positioning mechanism on plate body 2 and navigation host circuit board, greatly improve the generalization degree.

Claims

1. A pre-mountable shield for a navigation main circuit board, comprising a shield body, characterized in that: The shielding cover body is provided with more than one limiting mechanism on two opposite side walls, the limiting mechanism comprises a limiting gap and a limiting block, the limiting block extends upward and inward from the limiting gap at the bottom, a clamping positioning area is formed between the limiting block and the side wall of the shielding cover body, and the limiting mechanisms on the two opposite side walls of the shielding cover body are oppositely arranged.

2. A pre-mountable shield for a navigation host circuit board according to claim 1, characterized in that: The shielding cover body is provided with a plate body around, the plate body comprises a first plate body and a second plate body, the first plate body and the second plate body are oppositely arranged, the first plate body and the second plate body are provided with a limiting mechanism, and the limiting block forms a clamping positioning area with the first plate body and the second plate body respectively.

3. A pre-mountable shield for a navigation host circuit board according to claim 2, wherein: The second plate body is provided with an avoiding opening in the middle, the second plate body on one side of the avoiding opening is provided with a second positioning plate, the second positioning plate is provided with a second positioning hole, and the second positioning hole is provided with a second groove on one side.

4. A pre-mountable shield for a navigation host circuit board according to claim 3, wherein: The second positioning plate extends outward from the top end of the second plate body, and the second groove extends from the second positioning plate to the second plate body.

5. A pre-mountable shield for a navigation host circuit board as recited in claim 2, wherein: The plate body further comprises two oppositely arranged third plate bodies, the two third plate bodies, the first plate body and the second plate body form a frame structure of the shielding cover body, the third plate body is provided with a third positioning plate, the third positioning plate is provided with a third positioning hole, and the third positioning hole is provided with a third groove on both sides.

6. A pre-mountable shield for a navigation host circuit board according to claim 5, wherein: The third positioning plate extends outward from the top end of the third plate body, and the third groove extends from the third positioning plate to the third plate body.

7. A pre-mountable shield for a navigation host circuit board as recited in claim 5, wherein: The third plate body is provided with a heat dissipation hole corresponding to the two sides of the third groove.

8. A pre-mountable shield for a navigation host circuit board according to claim 5, wherein: One side of the third positioning plate is further provided with a fourth positioning plate, the fourth positioning plate extends outward from the third plate body, and the fourth positioning plate is provided with a fourth positioning hole.

9. A pre-mountable shield for a navigation host circuit board according to claim 8, wherein: The fourth positioning plate and the third plate body are provided with a fourth groove recessed inward at the connection position.

10. A pre-installable shield for a navigation host circuit board according to claim 1, wherein: Adjacent two plate bodies are provided with a through groove.

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