Heating lens conductive connection structure and camera module employing same

Abstract

The invention provides a heating lens conductive connection structure and a camera module applying the same, the heating lens conductive connection structure comprises a lens barrel, a heating element, a conductive element, a power supply substrate and a BTB connector, the heating element is used for heating a lens, the power supply substrate is used for supplying power to an external power supply, and the power supply substrate is conducted to the heating element through the conductive element; wherein the conductive element and the power supply substrate are connected through the BTB connector, and the BTB connector is arranged in the mounting groove at the rear end of the lens cone, such that the structure is stable, the interface connection of the conductive element is reliable and convenient, and the occupied space is small, so that the assembly efficiency of the lens module is improved, the miniaturization of the product is facilitated, and the production cost is reduced. The device has the advantages of being simple in structure and convenient to assemble.

Description

Technical Field

[0001] The present application relates to the field of heating lenses, and in particular to a conductive connection structure for heating lenses. Background Art

[0002] With the development of science and technology, the use of lenses is becoming more and more extensive, and the use scenarios and environments are becoming more and more complex, so the requirements for lenses are also getting higher and higher. For example, lenses used outdoors include outdoor monitoring lenses, parking lot license plate electronic recognition lenses, and vehicle-mounted lenses. During the use of vehicle-mounted lenses, the part with the largest temperature difference on the lens is the lens that contacts the outside. If the temperature difference between the inside and outside of the vehicle-mounted lens is large or it is in an environment with high humidity, water mist or water droplets will appear on the inner end surface of the lens that contacts the outside, making the captured image blurred, seriously affecting driving safety. This requires the lens to have a heating function to achieve defogger and defrost.

[0003] In the prior art, most heating lenses currently use wires extending out of the lens barrel to connect to the client's circuit board to provide power to achieve the heating effect. This method requires a large space, is complex to operate, is inefficient, and has unstable connections that result in unstable heating performance.

[0004] Existing cameras usually use a wiring harness or a flexible circuit board interface to electrically connect the heating element to the camera circuit board. For example, the camera module with a heating function disclosed in Patent No. CN201811517812.8 has an interface connected by a wiring harness terminal. This connection method takes up a large space and has low assembly efficiency. It does not conform to the current development direction of miniaturization and low cost of heating lens modules, and further improvement is urgently needed. Summary of the invention

[0005] In order to solve the technical problems that the existing connection between the heating element and the camera circuit board occupies a large space and has low assembly efficiency, the present application provides a conductive connection structure for a heating lens with a simple structure and easy assembly, wherein the conductive element and the power supply substrate are connected using a BTB connector, and the BTB connector is arranged in a mounting groove at the rear end of the lens barrel. This implementation has a stable structure, reliable and convenient interface connection of the conductive element, and occupies a small space, thereby improving the assembly efficiency of the lens module and facilitating a more miniaturized product.

[0006] In order to achieve the above object, the present invention provides a heating lens conductive connection structure, which at least comprises: A lens barrel, wherein a mounting groove is provided at the rear end of the lens barrel; A heating element, which is arranged at the front end of the lens barrel and is used for heating; A power supply substrate, which is arranged at the rear end of the lens barrel and is used for power supply; A conductive element, one end of which is electrically connected to the heating element, and the other end of which extends toward the rear end of the lens barrel and is electrically connected to the power supply substrate through a BTB connector, wherein the BTB connector is disposed in the mounting groove.

[0007] A heating lens conductive connection structure as described above, wherein the BTB connector comprises a first BTB connector and a second BTB connector that are matingly connected; The first BTB connector is disposed on the other end of the conductive element and is located in the mounting groove; The second BTB connector is arranged on a side of the power supply substrate close to the lens barrel and extends into the mounting groove.

[0008] In the above-mentioned conductive connection structure of a heating lens, the other end of the conductive element is provided with a bending portion extending into the mounting groove, and the first BTB connector is provided on a side of the bending portion close to the power supply substrate.

[0009] In the above-mentioned conductive connection structure for a heating lens, a boss portion is provided in the mounting groove, and the end of the bent portion abuts against the boss portion for positioning and assembly.

[0010] In the conductive connection structure of a heating lens as described above, the front end of the lens barrel is provided with a receiving groove for installing the heating element, the side wall of the lens barrel is provided with a hollow wire-passing channel connecting the installation groove and the receiving groove, and the conductive element is arranged in the hollow wire-passing channel.

[0011] In the above-mentioned conductive connection structure for a heating lens, the conductive element is an FPC flexible circuit board or an electronic wiring harness.

[0012] In the above-mentioned conductive connection structure for a heating lens, the conductive element is bonded to the lens barrel.

[0013] In the above-mentioned conductive connection structure for a heating lens, the power supply substrate is an FPC substrate or a PCB circuit board.

[0014] In the above-mentioned conductive connection structure for a heating lens, the power supply substrate is bonded to the rear end surface of the lens barrel, and its edge does not exceed the edge of the rear end surface of the lens barrel.

[0015] In the above-mentioned conductive connection structure for a heating lens, a plurality of protruding positioning columns are provided at the rear end of the lens barrel, and a plurality of positioning holes for matching nested installation are opened on the power supply substrate.

[0016] Another object of the present application is to provide a camera module, comprising the above-mentioned conductive connection structure for heating the lens, a first lens arranged at the front end of the lens barrel, and a pressure cover that cooperates with the front end of the lens barrel to lock the first lens on the lens barrel, and the heating element heats the first lens.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present application provides a heating lens conductive connection structure and a camera module using the same, comprising a lens barrel, a heating element, a conductive element, a power supply substrate and a BTB connector, wherein the heating element is used for heating the lens, the power supply substrate is used for power supply from an external power source, the power supply substrate is conductively connected to the heating element through the conductive element, wherein the conductive element and the power supply substrate are connected by a BTB connector, and the BTB connector is arranged in a mounting groove at the rear end of the lens barrel. This implementation has a stable structure, a reliable and convenient interface connection of the conductive element, and occupies a small space, thereby improving the assembly efficiency of the lens module and facilitating a more miniaturized product. The present application has the advantages of simple structure and convenient assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for describing the embodiments are briefly introduced below.

[0019] Figure 1 is a cross-sectional schematic diagram of a camera module in an embodiment of the present application; Figure 2 is a structural schematic diagram of a conductive connection structure of a heating lens in an embodiment of the present application; Figure 3 This is a schematic diagram of a structure in which a power supply substrate is hidden in a conductive connection structure of a heating lens in an embodiment of the present application; Figure 4 is a schematic diagram of the structure of the lens barrel in an embodiment of the present application; Figure 5 is an exploded schematic diagram of a camera module in an embodiment of the present application; Figure 6 is a schematic diagram of the structure of the heating element and the conductive element in the embodiment of the present application; Figure 7 is a schematic diagram of the structure of a heating element and an unbent conductive element in an embodiment of the present application; Figure 8 This is a schematic diagram of the structure of the power supply substrate in an embodiment of the present application; Fig. 9 It is a structural schematic diagram of another viewing angle of the lens barrel in the embodiment of the present application. DETAILED DESCRIPTION

[0020] like Figure 1-9As shown, a heating lens conductive connection structure at least includes a lens barrel 1, a heating element 2, a conductive element 3, a power supply substrate 4 and a BTB connector 5; the heating element 2 is arranged at the front end of the lens barrel 1 for heating; the power supply substrate 4 is arranged at the rear end of the lens barrel 1 for power supply; one end of the conductive element 3 is electrically connected to the heating element 2, and the other end extends to the rear end of the lens barrel 1 and is electrically connected to the power supply substrate 4 through the BTB connector 5.

[0021] The embodiment of the present application provides a heating lens conductive connection structure with a simple structure and easy assembly, including a lens barrel, a heating element, a conductive element, a power supply substrate and a BTB connector, wherein the heating element is used for heating the lens, the power supply substrate is used for power supply from an external power source, and the power supply substrate is conductively connected to the heating element through the conductive element, wherein the conductive element and the power supply substrate are connected by a BTB connector, and the BTB connector is arranged in a mounting groove at the rear end of the lens barrel. This implementation has a stable structure, a reliable and convenient interface connection of the conductive element, and occupies a small space, thereby improving the assembly efficiency of the lens module and facilitating a more miniaturized product.

[0022] Furthermore, the rear end of the lens barrel 1 is provided with an inwardly recessed mounting groove 11, and the BTB connector 5 is arranged in the mounting groove 11. The present application places the BTB connector at the notch of the lens barrel, which occupies a small space and is conducive to a more miniaturized product.

[0023] As a specific implementation, the BTB connector 5 includes a first BTB connector 51 and a second BTB connector 52 that are matched and connected; the first BTB connector 51 is arranged on the other end of the conductive element 3 and is located in the mounting groove 11; the conductive element on the heating device is welded to couple the BTB connector, and the second BTB connector 52 is arranged on the side of the power supply substrate 4 close to the lens barrel 1 and extends into the mounting groove 11. The male and female sockets of the connectors are correspondingly engaged, which realizes the normal electrical connection of the conductive element and ensures the normal operation of the functional element. It is easy to disassemble and assemble, and it is easy to repair or replace some components.

[0024] Specifically, the other end of the conductive element 3 is provided with a bending portion 31 extending into the mounting groove 11, the first BTB connector 51 is provided on the side of the bending portion 31 close to the power supply substrate 4, the mounting groove 11 is provided with a boss portion 12, the end of the bending portion 31 abuts against the boss portion 12 for positioning and assembly, and the conductive element 3 is bonded to the lens barrel 1, and the conductive element 3 is an FPC flexible circuit board or an electronic wiring harness. The conductive element 3 of the specific embodiment of the present application is composed of an FPC flexible circuit board and a first BTB connector 51. During assembly, the conductive element will be bent, and its end will be placed in the notch at the rear end of the lens barrel, and the side wall at the notch and the boss are used for positioning and assembly. The end of the conductive element is affixed with adhesive to make it bonded to the lens barrel. The assembly effect is as follows: Figure 3 shown.

[0025] As described above, a heating lens conductive connection structure, the front end of the lens barrel 1 is provided with a receiving groove 10 for installing the heating element 2, the side wall of the lens barrel 1 is provided with a hollow wire-passing channel 13 connecting the installation groove 11 and the receiving groove 10, and the conductive element 3 is arranged in the hollow wire-passing channel 13. The conductive element 3 extends to the rear end of the lens barrel 1 through the wire-passing channel 13, and is powered by the conductive element. The heating element generates heat and is transferred to the first lens through the heat-conducting element, so that its temperature rises, and the defogger and de-icer function is realized. The space is small, so that the lens module assembly efficiency is improved, and it is conducive to a more miniaturized product. Of course, the conductive element can be opened through the side of the lens barrel, and the through-hole inside the lens barrel is arranged. The shape, position, angle, etc. of the hole can be adjusted. The lens can accelerate the evaporation or dissipate the fog, frost, water droplets or ice on the surface of the lens. The lens can keep the temperature difference between the two sides of the lens within a certain range in real time to avoid condensation of water mist, etc., and prevent the imaging from being unclear or blind.

[0026] Specifically, the power supply substrate 4 is an FPC substrate or a PCB circuit board, and the power supply substrate 4 is bonded to the rear end surface of the lens barrel 1. The rear end of the lens barrel 1 is provided with a plurality of protruding positioning columns 14. The power supply substrate 4 is provided with a plurality of positioning holes 40 for matching nested installation, and its edge does not exceed the edge of the rear end surface of the lens barrel 1. Figure 8 It is an FPC substrate, and the BTB connector is also welded. The surface that contacts the lens barrel is affixed with adhesive. When assembling, assemble the FPC substrate to the lens barrel, the male and female connectors are correspondingly engaged, and the substrate does not protrude from the edge of the lens barrel. The assembly diagram is as follows Figure 2 As shown, the normal electrical connection of the conductive element is achieved, ensuring the normal operation of the functional element. The structure of the present application is stable, the interface connection of the conductive element is reliable and convenient, and it occupies a small space, which is conducive to a more miniaturized product.

[0027] Another object of the present application is to provide a camera module, comprising the above-mentioned heating lens conductive connection structure, a first lens 6 arranged at the front end of the lens barrel 1, and a pressure cover 7 that cooperates with the front end of the lens barrel 1 to lock the first lens 6 on the lens barrel 1, and the heating element 2 heats the first lens 6. The present application has a stable structure, reliable and convenient interface connection of the conductive element, and occupies a small space, so that the lens assembly efficiency is improved, and it is conducive to more miniaturized products and reduced costs.

[0028] Furthermore, a heat-conducting element 8 is provided in the accommodating groove 10 at the front end of the lens barrel 1, in front of the heating element 2. In the heating lens of the present application, the heating element and the heat-conducting element need to be fixed together before the lens is assembled; during assembly, the heat-conducting element is placed by limiting the outer diameter of the lens barrel; at this time, the conductive element is placed through the internal through hole of the lens barrel; then the first lens is assembled and supported on the heat-conducting element; power is supplied by the conductive element, the heating element generates heat and is transferred to the first lens through the heat-conducting element, so that its temperature is increased, thereby realizing the defog and de-icing function. This structure is convenient for assembly and positioning, has high heating efficiency, is easy to repair and recycle, has simple parts processing, and has low cost.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heating lens conductive connection structure, characterized in that: At least: The lens barrel (1) has a rear end surface provided with an inwardly recessed mounting groove (11); A heating element (2), which is arranged at the front end of the lens barrel (1) and is used for heating; A power supply substrate (4), which is arranged at the rear end of the lens barrel (1) and is used for supplying power; A conductive element (3) having one end electrically connected to the heating element (2) and the other end extending toward the rear end of the lens barrel (1) and electrically connected to the power supply substrate (4) via a BTB connector (5), wherein the BTB connector (5) is disposed in the mounting groove (11).

2. The heating lens conductive connection structure according to claim 1, characterized in that: The BTB connector (5) comprises a first BTB connector (51) and a second BTB connector (52) which are matingly connected; The first BTB connector (51) is arranged on the other end of the conductive element (3) and is located in the mounting groove (11); The second BTB connector (52) is arranged on a side of the power supply substrate (4) close to the lens barrel (1), and extends into the installation groove (11).

3. The heating lens conductive connection structure according to claim 2, characterized in that: The other end of the conductive element (3) is provided with a bent portion (31) extending into the mounting groove (11), and the first BTB connector (51) is provided on a side of the bent portion (31) close to the power supply substrate (4).

4. The heating lens conductive connection structure according to claim 3, characterized in that: A boss portion (12) is provided in the installation groove (11), and the end of the bent portion (31) abuts against the boss portion (12) for positioning and assembly.

5. The heating lens conductive connection structure according to claim 1, characterized in that: The front end of the lens barrel (1) is provided with a receiving groove (10) for installing the heating element (2), the side wall of the lens barrel (1) is provided with a hollow wire passage (13) connecting the installation groove (11) and the receiving groove (10), and the conductive element (3) is arranged in the hollow wire passage (13).

6. The heating lens conductive connection structure according to claim 1, characterized in that: The conductive element (3) is an FPC flexible circuit board or an electronic wiring harness; and / or The conductive element (3) is bonded to the lens barrel (1).

7. The heating lens conductive connection structure according to claim 1, characterized in that: The power supply substrate (4) is an FPC substrate or a PCB circuit board; and / or The power supply substrate (4) is bonded to the rear end surface of the lens barrel (1), and its edge does not exceed the edge of the rear end surface of the lens barrel (1).

8. The heating lens conductive connection structure according to claim 1, characterized in that: The rear end of the lens barrel (1) is provided with a plurality of protruding positioning columns (14), and the power supply substrate (4) is provided with a plurality of positioning holes (40) for matching nested installation.

9. A camera module, characterized in that: The invention comprises a heating lens conductive connection structure as claimed in any one of claims 1 to 8, a first lens (6) arranged at the front end of the lens barrel (1), and a pressure cover (7) cooperating with the front end of the lens barrel (1) to lock the first lens (6) on the lens barrel (1), wherein the heating element (2) heats the first lens (6).

10. The camera module according to claim 9, characterized in that: A heat conducting element (8) is provided at the front end of the lens barrel (1) and located in front of the heating element (2). Power is supplied through the conductive element (3). The heating element (2) generates heat and transmits it to the first lens (6) through the heat conducting element (8).

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