Dash cam

Abstract

An embodiment of the present invention provides a driving recorder, which includes a hollow housing, a control circuit board assembled in the housing, and a camera module assembled at one end of the housing. The camera module includes an outer sleeve tube with both ends penetrating, a substrate fixed to one end of the outer sleeve tube, a lens barrel made of a metal material and fixed to the middle of the substrate and inserted into the outer sleeve tube, and a lens assembled in the lens barrel. The camera module further includes a conductive sealing rubber ring sleeved on the lens barrel, and the inner ring surface and the outer ring surface of the conductive sealing rubber ring elastically abut against the outer wall of the lens barrel and the inner wall of the outer sleeve tube respectively. The outer sleeve tube is made of a conductive material obtained by adding a conductive auxiliary material to a plastic raw material and mixing them evenly, and the outer sleeve tube is electrically connected to the grounding circuit on the control circuit board. This embodiment can effectively eliminate static interference and shield electromagnetic waves.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of vehicle-mounted devices, and particularly to a driving recorder. Background Art

[0002] A driving recorder is generally installed in a vehicle to monitor and record the driving conditions of a motor vehicle in real time. However, due to the increase in vehicle-mounted devices, various electronic components will emit electromagnetic signals during operation, which will interfere with other devices, resulting in a decrease in the clarity of the displayed image of the driving recorder and affecting normal recording and monitoring. In order to reduce the interference of other electronic devices on the lens image recording work, a structure for preventing electromagnetic interference needs to be provided on the driving recorder. Using a metal material to make the shell is the most easily thought-of means of preventing electromagnetic interference. However, due to the relatively high cost of metal materials, it is usually only used in some high-end products. Generally, a manufacturer will add a metal shrapnel at the lens of the driving recorder to make the lens of the driving recorder electrically conduct with the shell part, so as to effectively conduct the static electricity generated between the components of the driving recorder itself, and at the same time, it can shield the interference of external electromagnetic signals. However, due to the small contact area between the metal shrapnel and the lens, the internal static electricity cannot be well conducted, thus affecting the normal operation of the driving recorder. Summary of the Invention

[0003] The technical problem to be solved by the embodiments of the present invention is to provide a driving recorder that can effectively protect against static electricity and electromagnetic interference.

[0004] To solve the above technical problem, the embodiments of the present invention adopt the following technical solutions: A driving recorder includes a hollow shell, a control circuit board assembled in the shell, and a camera module assembled at one end of the shell. The camera module includes an outer sleeve tube with both ends penetrating, a substrate fixed at one end of the outer sleeve tube, a lens barrel made of a metal material and fixed in the middle of the substrate and inserted into the outer sleeve tube, and a lens assembled in the lens barrel. The camera module further includes a conductive sealing rubber ring sleeved on the lens barrel, and the inner ring surface and the outer ring surface of the conductive sealing rubber ring elastically abut against the outer wall of the lens barrel and the inner wall of the outer sleeve tube respectively. The outer sleeve tube is made of a conductive material obtained by adding a conductive auxiliary material to a plastic raw material and mixing them evenly. The outer sleeve tube is electrically conducted with the grounding line on the control circuit board.

[0005] Further, the plastic raw material is at least one of phenolic plastic, epoxy plastic, amino plastic, unsaturated polyester, and alkyd plastic, and the conductive auxiliary material is at least one of carbon fiber, carbon powder, and steel fiber.

[0006] Further, the conductive sealing rubber ring is formed by adding at least one of carbon powder and carbon fiber to silicone rubber and mixing them evenly.

[0007] Furthermore, an insulating protective layer covers all parts of the outer wall of the lens barrel except for the part in contact with the conductive sealing rubber ring.

[0008] Furthermore, a side surface of one end of the outer sleeve into which the lens barrel is inserted laterally extends to form an assembly plate for correspondingly assembling and connecting with the housing.

[0009] Furthermore, a slot hole is formed at one end of the housing. The camera module is assembled at the slot hole, and the slot hole is covered by docking the assembly plate with the slot hole. The outer sleeve is located outside the housing, and the substrate is located inside the housing.

[0010] Furthermore, the housing is obtained by covering and relatively fixing an upper cover and a bottom shell both made of metal materials. The slot hole is provided at one end of the bottom shell. Clamping grooves opening towards the upper cover are respectively provided on opposite side walls of the slot hole. Clamping blocks are respectively formed at opposite side edges of the assembly plate. The assembly plate is correspondingly clamped in the clamping grooves of the bottom shell by means of the clamping blocks. When the upper cover and the bottom shell are buckled and fixed, the clamping blocks are correspondingly covered to clamp and fix the assembly plate between the upper cover and the bottom shell.

[0011] Furthermore, insulating protective layers cover the surfaces of both the upper cover and the bottom shell. Parts of the upper cover in contact with the grounding lines on the bottom shell and the control circuit board, and parts of the bottom shell in contact with the upper cover, the grounding lines on the control circuit board, and the outer sleeve are not provided with insulating protective layers respectively, so that the internal metal bodies are exposed. The upper cover contacts the exposed metal body on the bottom shell and the grounding line on the control circuit board through its own exposed metal body. The bottom shell also contacts the outer sleeve and the grounding line on the control circuit board through its own exposed metal body.

[0012] Furthermore, a wedge-shaped part with a slot width gradually narrowing from the slot opening to the slot bottom is formed at one end of the clamping groove close to the slot bottom. The shape and size of the clamping block are adapted to the clamping groove.

[0013] Furthermore, the substrate is fixed on the assembly plate.

[0014] With the above technical solution, the embodiments of the present invention at least have the following beneficial effects: In the embodiments of the present invention, a conductive sealing rubber ring is sleeved on the lens barrel in the middle of the camera module, and the inner ring surface and the outer ring surface of the conductive sealing rubber ring are elastically abutted against the outer wall of the lens barrel and the inner wall of the outer sleeve respectively. At the same time, the outer sleeve is electrically connected to the grounding line on the control circuit board, so that the static electricity generated by the lens in the lens barrel during the operation of the camera module is conductively transferred to the grounding line through each component, effectively eliminating static electricity interference and shielding electromagnetic waves. Moreover, the outer sleeve is made of a conductive material obtained by adding a conductive auxiliary material to a plastic raw material and mixing them evenly. It not only has good electrical conductivity to meet the performance requirements of anti-static interference and electromagnetic wave shielding, but also has a relatively low material cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is an assembled structure schematic diagram of an alternative embodiment of the structure of a driving recorder with anti-static and electromagnetic interference of the present invention.

[0016] Figure 2 FIG. is an exploded structure schematic diagram of an alternative embodiment of the structure of a driving recorder with anti-static and electromagnetic interference of the present invention.

[0017] Figure 3 FIG. is an exploded structure schematic diagram of a camera module of an alternative embodiment of the structure of a driving recorder with anti-static and electromagnetic interference of the present invention.

[0018] Figure 4 FIG. is a cross-sectional schematic diagram along the length direction of the main board in the assembled state of an alternative embodiment of the structure of a driving recorder with anti-static and electromagnetic interference of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the following illustrative embodiments and descriptions are only used to explain the present invention and are not intended to limit the present invention. Moreover, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0020] Such as Figures 1 - 4As shown in the figure, an alternative embodiment of the present invention provides a driving recorder, which includes a hollow housing 1, a control circuit board 10 assembled in the housing 1, and a camera module 30 assembled at one end of the housing 1. The camera module 30 includes an outer sleeve 301 with both ends penetrating, a substrate 303 fixed to one end of the outer sleeve 301, a lens barrel 305 made of a metal material and fixed to the middle of the substrate 303 and inserted into the outer sleeve 301, and a lens 306 assembled in the lens barrel 305. The camera module 30 further includes a conductive sealing rubber ring 307 sleeved on the lens barrel 305. The inner ring surface 3070 and the outer ring surface 3072 of the conductive sealing rubber ring 307 elastically abut against the outer wall of the lens barrel 305 and the inner wall of the outer sleeve 301 respectively. The outer sleeve 301 is made of a conductive material obtained by adding a conductive auxiliary material to a plastic raw material and mixing them evenly. The outer sleeve 301 is electrically connected to the grounding circuit on the control circuit board 10.

[0021] In the embodiment of the present invention, by sleeving a conductive sealing rubber ring 307 on the lens barrel 305 in the middle of the camera module 30, where the inner ring surface 3070 and the outer ring surface 3072 elastically abut against the outer wall of the lens barrel 305 and the inner wall of the outer sleeve 301 respectively, and at the same time, the outer sleeve 301 is electrically connected to the grounding circuit on the control circuit board 10, when the camera module 30 works, the static electricity generated by the lens in the lens barrel 305 is conducted to the grounding circuit through the conductivity between the components, effectively eliminating static electricity interference and shielding electromagnetic waves. Moreover, the outer sleeve 301 is made of a conductive material obtained by adding a conductive auxiliary material to a plastic raw material and mixing them evenly. It not only has good conductivity to meet the performance requirements of anti-static interference and electromagnetic wave shielding, but also has relatively low material cost.

[0022] In another alternative embodiment of the present invention, the plastic raw material is at least one of phenolic plastic, epoxy plastic, amino plastic, unsaturated polyester and alkyd plastic, and the conductive auxiliary material is at least one of carbon fiber, carbon powder and steel fiber. In this embodiment, by using the above-mentioned plastic raw material and conductive auxiliary material to mix and make the outer sleeve 301, the raw material sources are wide and the cost is low. The obtained conductive material has good conductivity, can effectively transfer the static electricity conducted out by the lens barrel 305 and the conductive sealing ring 307, and saves costs at the same time.

[0023] In another alternative embodiment of the present invention, the conductive sealing rubber ring 307 is obtained by adding at least one of carbon powder and carbon fiber to silica gel and mixing them evenly and then molding. In this embodiment, by adding at least one of carbon powder or carbon fiber to silica gel and mixing and molding to make the conductive sealing ring 307, it can effectively transfer charges. At the same time, silica gel has elasticity, which can well increase the contact area with the lens barrel 305 and the outer sleeve 301, so that static electricity can be well conducted out.

[0024] In another alternative embodiment of the present invention, an insulating protective layer covers all parts of the outer wall of the lens barrel 305 except the part that abuts against the conductive sealing rubber ring 307. In this embodiment, by coating the insulating protective layer on the outer wall of the lens barrel 305, electromagnetic wave interference can be effectively shielded and charge leakage can be prevented. The part of the conductive sealing rubber ring 307 that abuts against the outer wall of the lens barrel 305 has no insulating protective layer, enabling the conductive sealing rubber ring 307 to transfer and export the charge of the lens barrel 305 well.

[0025] Figures 2 - 3 As shown, in another alternative embodiment of the present invention, an assembly plate 309 for corresponding assembly and connection with the housing 1 laterally extends from the side of the end of the outer sleeve 301 where the lens barrel 305 is inserted. In this embodiment, by providing the assembly plate 309 on the side of the end of the outer sleeve 301 where the lens barrel 305 is inserted and corresponding assembling it on the housing 1, the camera module 30 placed on the assembly plate 309 can be well fixed to the housing 1 to prevent detachment.

[0026] In another alternative embodiment of the present invention, a slot hole 50 is formed at one end of the housing 1. The camera module 30 is assembled at the slot hole 50, and the assembly plate 309 is docked with the slot hole 50 to cover the slot hole 50. The outer sleeve 301 is located outside the housing 1, and the substrate 303 is located inside the housing 1.

[0027] In this embodiment, the slot hole 50 on the housing 1 is covered by the cooperation of the assembly plate 309 and the slot hole 50, so that the housing 1 and the camera module 30 are closely combined, preventing charge leakage and electromagnetic interference caused by the gap between the camera module 30 and the housing 1.

[0028] In another alternative embodiment of the present invention, the housing 1 is obtained by covering and relatively fixing an upper cover 70 and a bottom shell 90 both made of metal materials. The slot hole 50 is provided at one end of the bottom shell 90. On the opposite side walls of the slot hole 50, clamping grooves 901 opening towards the upper cover 70 are respectively provided. At the opposite sides of the assembly plate 309, clamping blocks 3090 are respectively formed. The assembly plate 309 is correspondingly clamped in the clamping grooves 901 of the bottom shell 90 by means of the clamping blocks 3090. When the upper cover 70 and the bottom shell 90 are buckled and fixed, the clamping blocks 3090 are correspondingly covered to clamp and fix the assembly plate 309 between the upper cover 70 and the bottom shell 90.

[0029] In this embodiment, by setting the pressing and buckling combination method of the upper cover 70, the bottom shell 90 and the assembly plate 309, and through the clamping fixation of the clamping blocks 3090 and the clamping grooves 901, good assembly and fixation are achieved among the upper cover 70, the bottom shell 90 and the camera module 30, preventing the components from becoming loose during the actual operation of the driving recorder.

[0030] In another alternative embodiment of the present invention, the surfaces of both the upper cover 70 and the bottom case 90 are covered with an insulating protective layer, and the parts on the upper cover 70 that are respectively in contact with the grounding lines on the bottom case 90 and the control circuit board 10, as well as the parts on the bottom case 90 that are respectively in contact with the grounding lines on the upper cover 70, the control circuit board 10, and the outer sleeve 301, are not provided with the insulating protective layer respectively, so that the internal metal body is exposed. The upper cover 70 is in contact with the exposed metal body on the bottom case 90 and the grounding line on the control circuit board 10 through its own exposed metal body, and the bottom case 90 is also in contact with the outer sleeve 301 and the grounding line on the control circuit board 10 through its own exposed metal body.

[0031] In this embodiment, by coating the insulating protective layer on the upper cover 70 and the bottom case 90, it can effectively prevent charge leakage during the operation of internal components and when the electrical conductive components conduct charge, and at the same time effectively shield electromagnetic interference.

[0032] In another alternative embodiment of the present invention, a wedge-shaped portion with a groove width gradually narrowing from the groove opening to the bottom of the groove is formed at one end of the slot 901 near the bottom of the slot, and the shape and size of the clamping block 3090 are adapted to the slot 901. In this embodiment, by setting the slot 901 and the clamping block 3090 to be wedge-shaped with a groove width gradually narrowing from the groove opening to the bottom of the groove, it can make the clamping between the clamping block 3090 and the slot 901 more convenient.

[0033] As Figure 4 shown, in another alternative embodiment of the present invention, the substrate 303 is fixed to the assembly board 309. In this embodiment, by setting the substrate 303 to be fixed to the assembly board 309, it can keep the overall structure of the camera module 30 stable, so that the lens will not shake during the image recording process.

[0034] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can make many variations without departing from the spirit of the present invention and the scope protected by the claims. These all fall within the protection scope of the present invention.

Claims

1. A driving recorder, comprising a hollow housing, a control circuit board assembled in the housing, and a camera module assembled at one end of the housing. The camera module includes an outer sleeve with through ends at both ends, a substrate fixed to one end of the outer sleeve, a lens barrel made of a metal material and fixed to the middle of the substrate and inserted into the outer sleeve, and lenses assembled in the lens barrel. Characterized in that, the lens barrel is received in the outer sleeve. An assembly plate for corresponding assembly and connection with the housing laterally extends from the side surface of the end of the outer sleeve where the lens barrel is inserted, and the substrate is fixed to the assembly plate; the camera module further includes a conductive sealing rubber ring disposed in the gap between the lens barrel and the outer sleeve. The inner ring surface and the outer ring surface of the conductive sealing rubber ring elastically abut against the outer wall of the lens barrel and the inner wall of the outer sleeve respectively. The outer sleeve is made of a conductive material obtained by adding a conductive auxiliary material to a plastic raw material and mixing them evenly. The outer sleeve is electrically connected to the grounding line on the control circuit board; an insulating protective layer covers other parts of the outer wall of the lens barrel except the part that abuts against the conductive sealing rubber ring.

2. The driving recorder according to claim 1, Characterized in that, the plastic raw material is at least one of phenolic plastic, epoxy plastic, amino plastic, unsaturated polyester and alkyd plastic, and the conductive auxiliary material is at least one of carbon fiber, carbon powder and steel fiber.

3. The driving recorder according to claim 1, Characterized in that, the conductive sealing rubber ring is formed by adding at least one of carbon powder and carbon fiber to silica gel and mixing them evenly.

4. The driving recorder according to claim 1, Characterized in that, a slot hole is formed at one end of the housing. The camera module is assembled at the slot hole, and the slot hole is covered by docking the assembly plate with the slot hole. The outer sleeve is located outside the housing, and the substrate is located inside the housing.

5. The driving recorder according to claim 4, Characterized in that, the housing is obtained by covering and relatively fixing an upper cover and a bottom shell both made of metal materials. The bottom shell is provided with the slot hole at one end. Clamping grooves opening towards the upper cover are respectively provided on the opposite side walls of the slot hole. Clamping blocks are respectively formed at the opposite side edges of the assembly plate. The assembly plate is correspondingly clamped in the clamping grooves of the bottom shell by means of the clamping blocks. When the upper cover and the bottom shell are buckled and fixed, the clamping blocks are correspondingly covered to clamp and fix the assembly plate between the upper cover and the bottom shell.

6. The driving recorder according to claim 5, Characterized in that, The surfaces of both the upper cover and the bottom shell are covered with an insulating protective layer, and the parts on the upper cover that are respectively in contact with the grounding lines on the bottom shell and the control circuit board, as well as the parts on the bottom shell that are respectively in contact with the upper cover, the grounding lines on the control circuit board, and the outer sleeve, are not provided with an insulating protective layer respectively, so that the internal metal body is exposed. The upper cover contacts the metal body exposed on the bottom shell and the grounding lines on the control circuit board through its own exposed metal body, and the bottom shell also contacts the outer sleeve and the grounding lines on the control circuit board through its own exposed metal body.

7. The driving recorder according to claim 5, characterized in that a wedge-shaped part with a groove width gradually narrowing from the groove opening to the groove bottom is formed at one end of the card slot close to the groove bottom, and the shape and size of the clamping block are adapted to those of the card slot.

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