Lens fixing mechanism and electronic equipment

Abstract

A lens fixing mechanism comprises a shielding cover, a fixing piece and a lens module, and the shielding cover comprises a top plate and a side edge which is formed by bending and extending downwards from the periphery of the top plate. The fixing piece comprises a fixing plate body fixed on the surface of the top plate, lock catch elastic pieces formed by bending and extending upwards from the fixing plate bodies on the two transverse sides and an abutting elastic piece formed by bending and extending upwards from the fixing plate body on one longitudinal side, and the lens module is arranged in the fixing piece. And the lens module is propped by the propping elastic sheet and is fixed and limited by the locking elastic sheet. The utility model further comprises the electronic equipment. The occupied space of a printed circuit board in the electronic equipment can be reduced.

Description

Technical Field

[0001] This application relates to the fields of electromagnetic shielding and lens modules, and more particularly to a lens fixing mechanism and electronic device. Background Technology

[0002] The shielding cover and lens module are independent components within the electronic device. The shielding cover is used to shield critical components, such as processor chips, mounted on the printed circuit board. The shielding cover houses the components that need to be shielded and is also mounted and fixed to the printed circuit board. Similarly, the lens module is also mounted on the printed circuit board to acquire external image information, enabling functions such as video recording and photography. The printed circuit board design of electronic devices requires compactness, with extremely limited space requirements for components. Devices like mobile phones have very little internal space, and manufacturers strive to reduce the size of electronic components to save space or minimize their footprint on the printed circuit board.

[0003] To address the aforementioned technical problems, Chinese Patent Application No. 202122705928.8 discloses a technique for reducing the space occupied by printed circuit boards inside electronic devices. This technique involves placing the photosensitive chip on the outer surface of a shielding cover to reduce the space occupied by the photosensitive chip on the printed circuit board. However, this patent does not disclose how to fix the photosensitive chip. An easy way to think of is to use adhesive bonding to fix the photosensitive chip to the outer surface of the shielding cover, while the photosensitive chip is connected to the printed circuit board via a circuit that bypasses the shielding cover. Utility Model Content

[0004] Therefore, it is necessary to provide a lens fixing mechanism and electronic device that does not occupy printed circuit board space.

[0005] To solve the above-mentioned technical problems, this application provides a lens fixing mechanism, including a shield, a fixing member, and a lens module. The shield includes a top plate and a side extending downward from the outer periphery of the top plate. The fixing member includes a fixing plate fixed to the surface of the top plate, a locking spring extending upward from the fixing plates on both sides of the lateral direction, and a retaining spring extending upward from the fixing plate on one side of the longitudinal direction. The lens module is assembled into the fixing member, and the lens module is abutted by the retaining spring and fixed and limited by the locking spring.

[0006] Preferably, a fixed area is defined on the top plate of the shielding cover, the fixing member is fixed in the fixed area, and the fixing plate is welded to the surface of the top plate.

[0007] Preferably, a through hole is formed diagonally on the fixing plate, and a through hole or blind hole is opened at the corresponding position of the fixing area. The fixing plate is then fixed to the through hole or blind hole on the top plate by rivets or screws passing through the through hole.

[0008] Preferably, the middle portion of the fixing plate is cut to form a cutting space, the locking spring is formed by bending and extending upward from the side of the fixing plate adjacent to the cutting space, and the lens module directly passes through the cutting space and is attached to the surface of the fixing area.

[0009] Preferably, the lens module includes a lens housing, a voice coil motor, a lens, a base, a filter placed on the upper side of the base, a flexible circuit board placed under the base, and an image sensor mounted on the surface of the flexible circuit board.

[0010] Preferably, the lens housing includes a cover and a sidewall extending downward from the outer periphery of the cover. A lens aperture for the lens to capture external light is formed through the cover. The sidewall includes a first sidewall extending laterally and a second sidewall extending longitudinally. A locking groove is formed inwardly on the lower side of the second sidewall. The locking spring includes a spring body and a locking protrusion formed inwardly from the spring body. The locking protrusion is engaged in the locking groove of the second sidewall for limitation.

[0011] Preferably, a wire groove is formed by cutting off the bottom side of the first sidewall, and the flexible circuit board includes a mounting part placed on the surface of the fixed area, a connector located outside the shield, and a flexible wire electrically connecting the mounting part to the connector, the flexible wire extending out of the fixed area from the wire groove space.

[0012] Preferably, the base has a light-transmitting hole through the middle, an upper groove is provided on the upper side of the base around the light-transmitting hole, and a lower groove is provided on the lower side of the base around the light-transmitting hole. The filter is fixed in the upper groove, and the image sensor is covered in the lower groove and corresponds to the filter.

[0013] Preferably, the abutting spring includes a parallel extension extending from the fixed plate toward the cut-out space, an abutting portion bent upward from the parallel extension, and a guide slope bent outward from the abutting portion. The lens housing includes a cover and a sidewall extending downward from the outer periphery of the cover. A lens hole for the lens to capture external light is formed through the cover. The sidewall includes a first sidewall extending laterally and a second sidewall extending longitudinally. The abutting portion abuts against the first sidewall.

[0014] To address the aforementioned technical problems, this application also provides an electronic device, including the aforementioned lens fixing mechanism, a printed circuit board, a chip mounted on the printed circuit board, a shielding cover covering the outside of the chip, and a lens module connected to the printed circuit board via a flexible circuit board.

[0015] This application reuses the printed circuit board space of electronic devices by directly fixing the lens module to the surface of the shield, and then transmitting the signal to the printed circuit board through a flexible circuit board, which greatly reduces the space occupied by the printed circuit board. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a three-dimensional assembly diagram of the lens fixing mechanism for fixing the lens module in this application;

[0018] Figure 2 This is an exploded perspective view of the lens fixing mechanism and lens module of this application.

[0019] Figure 3 This is an exploded perspective view of the lens fixing mechanism and lens module of this application.

[0020] Figure 4 This is an exploded perspective view of the lens fixing mechanism of this application;

[0021] Figure 5 This is a perspective view of the fixing component of the lens fixing mechanism of this application;

[0022] Figure 6 For along Figure 1 The cross-sectional view shown by the dashed line AA.

[0023] Explanation of reference numerals in the attached figures

[0024] Shielding cover-10; Top plate-11; Side edge-12; Fixed area-13; Shielding space-14; Fixing piece-20; Fixed plate-21; Cut-out space-22; Supporting spring-23; Parallel extension-231; Supporting part-232; Guide slope-233; Locking spring-24; Spring body-241; Locking protrusion-242; Lens module-A; Lens housing-30; Cover-31; Side wall-32; First side wall-321; Second side wall-322; Locking groove-323; Lens hole-33; Receiving cavity-34; Wire groove-35; Lens-40; Voice coil motor-50; Flexible circuit board-60; Mounting part-61; Flexible wire-62; Connector-63; Base-70; Lower groove-71; Upper groove-72; Filter-80; Image sensor-90. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them.

[0026] Please see Figures 1 to 4 , Figure 6 As shown, the lens fixing mechanism of this application includes a shielding cover 10, a fixing member 20 fixed on the shielding cover 10, and a lens module A fixed on the fixing member 20.

[0027] The shielding cover 10 includes a top plate 11, a side edge 12 formed by bending downward from the outer periphery of the top plate 11, and a shielding space 14 with its lower end open, enclosed by the top plate 11 and the side edge 12. The top plate 11 has a flat plate structure, and a portion of the flat plate 11 is designated for fixing the fastener 20; this portion is defined as the fixing area 13. The edge of the side edge 12 is folded outward to form a horizontal soldering portion 15 for soldering onto a printed circuit board (not shown). The printed circuit board has several chips (not shown), and some of the chips are covered within the shielding space 14 to achieve internal and external shielding.

[0028] Please continue reading. Figure 5 As shown, the fastener 20 includes a fastening plate 21 that adheres to the surface of the fastening area 13, a cutting space 22 formed by cutting off the middle part of the fastening plate 21, a retaining spring 23 formed by bending and extending from the rear end of the fastening plate 21, and a locking spring 24 formed by bending and extending from both sides of the fastening plate 21.

[0029] The fixing plate 21 is attached to the surface of the fixing area 13 and fixed by spot welding. The fixing plate 21 is provided with through holes 25. The fixing area 13 of the top plate 11 is provided with blind holes 16 or through holes corresponding to the positions of the through holes 25. The through holes 25 of the fixing plate 21 and the blind holes or through holes of the top plate 11 are fixed together by rivets or screws. Preferably, one through hole 25 is provided diagonally.

[0030] The abutting spring 23 includes a parallel extension 231 extending from the fixing plate 21 toward the cut-out space 22, an abutting portion 232 bent upward from the front end of the parallel extension 231, and a guide slope 233 bent backward from the abutting portion 232. The parallel extension 231 has no connections on its left and right sides, providing a certain elastic force to the abutting portion 232 of the abutting spring 23; that is, the parallel extension 231 can bend upward to provide elastic force. The guide slope 233 facilitates the insertion and fixation of the lens module into the fixing member 20.

[0031] The locking spring 24 includes a spring body 241 formed by bending upward from both ends of the fixing plate 21 on one side of the cut-out space 22, and a locking protrusion 242 that is punched inward from the spring body 241 into the cut-out space 22. The cut-out space 22 allows the lens module A to be directly housed on the surface of the top plate 11 in the fixing area 13, which can reduce the thickness to a certain extent, while allowing the fixing member 20 to maintain a certain thickness to enhance rigidity without increasing the overall thickness of the product.

[0032] The lens module A includes a flexible circuit board 60, an image sensor 90 mounted on the flexible circuit board 60, a base 70 covering the image sensor 90, a filter 80 disposed on the upper side of the base 70, a voice coil motor 50 mounted on the base 70, a lens 40 disposed within the voice coil motor 50, and a lens housing 30 that houses the above components and is fixed to the fixing member 20.

[0033] The lens 40 is responsible for receiving external images and realizing functions such as imaging and focusing; the voice coil motor 50 includes a permanent magnetic field, which controls the position of the spring or mover by changing the magnitude of the coil current in the motor, thereby moving the lens and realizing automatic focusing of the lens; the filter is mainly used to filter out ultraviolet and infrared light that cannot be observed by the human eye, and reflects unwanted light, which plays a crucial role in the final imaging effect of the camera; the image sensor is used to convert light signals into electrical signals; the flexible circuit board transmits electrical signals to the main circuit board of the electronic device and the control signal transmission between the two.

[0034] The base 70 has a light-transmitting hole 73 running through its center. An upper groove 72 is formed on the upper side of the base 70 around the light-transmitting hole 73 to hold the filter 80. A lower groove 71, with an area larger than the upper groove 72, is recessed upwards on the lower side of the base 70 to accommodate the image sensor 90. The flexible circuit board 60 includes a mounting portion 61 placed on the surface of the soldering area 13 of the top plate 11, a connector 63 extending out of the fixing area 13, and a flexible wire 62 electrically connecting the mounting portion 61 and the connector 63. The lens 40 is mounted from bottom to top inside the voice coil motor 50 and located above the base 70.

[0035] The lens housing 30 includes a cover 31, a sidewall 32 extending downward from the outer periphery of the cover 31, a receiving cavity 34 formed by the cover 31 and the sidewall 32, and a lens aperture 33 penetrating the cover 31 and communicating with the receiving cavity 34 to the outside. The sidewall 32 includes a first sidewall 321 extending laterally and a second sidewall 322 extending longitudinally. At least one bottom portion of the first sidewall 321 is cut out to form a groove 35 for the flexible wire 62 to pass through, and two locking grooves 323 are formed on the lower side of the second sidewall 322, the locking grooves 323 opening downwards.

[0036] During assembly, first, the lens 40 is installed into the voice coil motor 50, and the filter 80 is fixed to the upper groove 72 of the base 70; the voice coil motor 50 with the lens 40 is fixed above the base 70. The voice coil motor 50, lens 40, and base 70 are then installed into the receiving cavity 34 of the lens housing 30. Next, the image sensor 90 is mounted on the mounting portion 61 of the flexible circuit board 60, and the mounting portion 61 with the image sensor 90 is fixed to the surface of the fixing area 13 of the top plate 11 through the cut-out space 22 of the fixing member 20. Finally, the lens housing 30 is pressed into the fixing member 20 from top to bottom, the locking protrusion 242 of the fixing member 20 is engaged in the locking groove 323 of the lens housing 30, and the abutting portion 232 of the abutting spring 23 applies an elastic force to the first sidewall 321 of the lens housing 30 to keep it stable. The flexible wire 62 is electrically connected from the wire groove 35 under the first side wall 321 of the lens housing 30 to the main circuit board of the electronic device via the connector 63.

[0037] The bottom of the lens housing 30 passes through the cut-out space 22 of the fastener 20 and is directly attached to the surface of the fixing area 13 to save vertical space.

[0038] This application reuses the printed circuit board space of electronic devices by directly fixing the lens module A to the surface of the shield 10, and then transmitting the signal to the printed circuit board through the flexible circuit board 60, which greatly reduces the space occupied by the printed circuit board.

[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The above embodiments only illustrate preferred implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A lens fixing mechanism characterized by comprising: The application relates to a shielding cover, a fixing part and a lens module, the shielding cover comprises a top plate and side edges formed by bending and extending downwards from the periphery of the top plate, the fixing part comprises a fixing plate body fixed on the surface of the top plate, a locking elastic sheet formed by bending and extending upwards from the fixing plate body on the two lateral sides, and a resisting elastic sheet formed by bending and extending upwards from the fixing plate body on the longitudinal side, the lens module is assembled in the fixing part, the lens module is resisted by the resisting elastic sheet and fixed and limited by the locking elastic sheet.

2. The lens fixing mechanism according to claim 1, wherein A fixing area is defined on the top plate of the shielding cover, the fixing part is fixed in the fixing area, and the fixing plate body is welded and fixed on the surface of the top plate.

3. The lens fixing mechanism according to claim 2, wherein Perforations are formed through the opposite corners of the fixing plate body, perforations or blind holes are formed in the corresponding positions of the fixing area, and the fixing plate body is fixed into the perforations or blind holes on the top plate through rivets or screws.

4. The lens fixing mechanism according to claim 2, wherein A cut space is formed by cutting the middle part of the fixing plate body, the locking elastic sheet is formed by bending and extending upwards from the side of the fixing plate body adjacent to the cut space, and the lens module is directly fitted on the surface of the fixing area through the cut space.

5. The lens fixing mechanism according to claim 4, wherein The lens module comprises a lens shell, a voice coil motor, a lens, a base, a filter, a flexible circuit board and an image sensor, the voice coil motor, the lens, the base, the filter and the image sensor are sequentially assembled in the lens shell.

6. The lens fixing mechanism according to claim 5, wherein The lens shell comprises a cover surface and a side wall formed by extending downwards from the periphery of the cover surface, a lens hole is formed through the cover surface for the lens to take in external light, the side wall comprises a first side wall formed by extending along the transverse direction and a second side wall formed by extending along the longitudinal direction, a locking groove is formed in the second side wall by concaving inwards on the lower side, the locking elastic sheet comprises an elastic sheet body and a locking convex part formed by concaving inwards from the elastic sheet body, and the locking convex part is clamped into the locking groove of the second side wall for limiting.

7. The lens fixing mechanism according to claim 6, wherein A wire slot is formed by cutting the bottom side of the first side wall, the flexible circuit board comprises a mounting part fitted on the surface of the fixing area, a connector located outside the shielding cover and a flexible wire electrically connecting the mounting part to the connector, and the flexible wire extends out of the fixing area from the wire slot.

8. The lens fixing mechanism according to claim 7, wherein A light transmission hole is formed through the middle of the base, an upper groove is arranged on the upper side of the base around the light transmission hole, a lower groove is arranged on the lower side of the base around the light transmission hole, the filter is fixed in the upper groove, and the image sensor is covered in the lower groove and corresponds to the filter.

9. The lens fixing mechanism according to claim 5, wherein The resisting elastic sheet comprises a parallel extension part formed by extending from the fixing plate body towards the cut space, a resisting part formed by bending upwards from the parallel extension part and a guide inclined surface formed by bending outwards from the resisting part, the lens shell comprises a cover surface and a side wall formed by extending downwards from the periphery of the cover surface, a lens hole is formed through the cover surface for the lens to take in external light, the side wall comprises a first side wall formed by extending along the transverse direction and a second side wall formed by extending along the longitudinal direction, and the resisting part resists on the first side wall.

10. An electronic device, comprising: The lens fixing mechanism, the printed circuit board, the chip attached to the printed circuit board, the shielding cover outside the chip, and the lens module connected to the printed circuit board through the flexible circuit board are included.

Images