Integrated lens barrel having high sealing performance

Abstract

An integrated lens barrel having high sealing performance, comprising a front housing (1), and a bottom housing (2) disposed at a middle of a bottom end of the front housing (1), the front housing (1) and the bottom housing (2) both being one-piece structures. The front housing (1) and the bottom housing (2) are fixedly connected by means of laser welding, and a mainboard module (4) is disposed in the middle of an inner cavity of the front housing (1) and the bottom housing (2). At least three positioning columns (3) are connected to the peripheral edges of the mainboard module (4), the positioning columns (3) being uniformly distributed, and the positioning columns (3) being made of brass, the surfaces thereof being subjected to tin electroplating treatment; corresponding positioning holes (5) are provided on the bottom end of the front housing (1) and an upper end of the bottom housing (2). The front housing (1) and the bottom housing (2) are formed into an integrated structure by means of forging and pressing, and then the front housing (1) and the bottom housing (2) are welded and sealed by means of laser, thereby simplifying the assembly process, and realizing an assembly method that requires no glue or screws, is simple and efficient, and has low costs. The integrated lens barrel having high sealing performance has overall cost advantages relative to a metal structural member formed by a conventional assembly process, and achieves long-lasting acid resistance, waterproof, anti-fogging and dustproof effects for the module.

Description

An integrated lens barrel with high sealing performance Technical Field

[0001] The utility model relates to the technical field of front shell assembly, in particular to an integrated lens barrel with high sealing performance. Background Art

[0002] The lens barrel, also known as the lens barrel, is a custom-made metal or plastic cylinder that surrounds the lens assembly. The barrel's length varies depending on the focal length of the lens, and its diameter matches the lens's aperture. The front of the barrel has a screw-on mount for the lens hood, while the rear of the barrel has a screw-on mount (or bayonet mount) for the camera. Depending on the lens and camera, the barrel also features various features such as a focus ring, aperture adjustment ring (or aperture ring), shutter speed adjustment ring, and zoom ring. It may also be engraved with information such as the lens's maximum relative aperture, focal length, or depth of field gauge.

[0003] The inventors of this application discovered that the above technology has at least the following technical problems during the process of assembling the front shell:

[0004] The traditional front shell module assembly process requires steps such as dispensing, curing, and screw assembly. The entire process has disadvantages such as long cycle time, complexity, low efficiency, and high assembly cost.

[0005] Traditional front shell motherboards are mostly fixed to the inside of the shell by screws and glue. However, when the screws and glue are used in a high temperature and high humidity environment for a long time and vibrate for a long time, they are prone to melting and loosening, causing the front shell motherboard to shift.

[0006] Traditionally, the components inside the front shell are sealed and connected with sealing rings, which are then glued and fixed with screws. During long-term use, the sealing rings and glue will gradually age, affecting the sealing, which will cause fog and dust to form on the camera lens.

[0007] In order to solve the above problems, we propose an integrated lens barrel with high sealing performance to solve the above problems. Technical issues

[0008] The main purpose of the utility model is to provide an integrated lens barrel with high sealing performance for vehicle use, which can effectively solve the problems in the background technology.

[0009] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0010] A highly sealed, one-piece lens barrel comprises a front housing, with a bottom housing disposed at the center of the bottom end of the front housing. Both the front and bottom housings are integrally structured and fixedly connected by laser welding. The weld depth is 0.5-0.7 mm. Laser welding is performed at the junction of the front and bottom housings, thereby enhancing the sealing of the module after welding.

[0011] Preferably, a motherboard module is disposed in the middle of the inner cavity of the front and bottom shells, and at least three sets of positioning posts are connected to the four edges of the motherboard module, with the at least three sets of positioning posts being evenly distributed. If three sets of positioning posts are provided, the three sets of positioning posts are distributed in a triangular pattern, making it easier for workers to quickly limit the installation of the motherboard module, thereby improving assembly efficiency.

[0012] Preferably, the positioning column and the front shell, as well as the positioning column and the bottom shell are fixedly installed by riveting.

[0013] Preferably, the positioning column is made of brass, and its surface is electroplated with tin.

[0014] Preferably, three groups of positioning holes are provided on the bottom end of the front shell and the upper end of the bottom shell, the positioning holes are adapted to the positioning posts, and the bottoms of the positioning posts are slidably mounted in the middle of the inner sides of the positioning holes.

[0015] Riveting can enhance the support and pulling force of the positioning column, thereby maintaining the stability of the motherboard module installation and preventing the motherboard module from loosening during long-term use.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This new design uses forging to create an integrated front and bottom shell structure, which is then laser welded and sealed. This simplifies the assembly process, achieving a glue-free and screw-free assembly method that is simple, efficient, and low-cost. It surpasses the overall cost of metal structural parts in traditional assembly processes and significantly reduces the cost of module assembly.

[0018] By adopting a soldering process without screws and glue, and by integrating the mainboard module and the front shell into one, the problem of the camera loosening and causing displacement in high temperature and high humidity environments and vibration conditions is solved.

[0019] By adopting an integrated lens barrel forging method and then laser welding the front shell and the bottom shell, the front shell and the bottom shell are integrated into one, making the front shell have the characteristics of high precision. At the same time, it also eliminates the problem of camera fogging caused by aging of sealing rings and glue in traditional assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is a diagram showing the overall structure of an integrated lens barrel with high sealing performance according to the present invention;

[0021] FIG2 is an exploded view of an integrated lens barrel with high sealing performance according to the present invention;

[0022] FIG3 is a bottom view of an integrated lens barrel with high sealing performance according to the present invention.

[0023] In the figure: 1. Front shell; 2. Bottom shell; 3. Positioning column; 4. Mainboard module; 5. Positioning hole. DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below with reference to the accompanying drawings. Example

[0025] Referring to Figures 1-3, a highly sealed, one-piece lens barrel comprises a front housing 1, with a bottom housing 2 disposed at the center of the bottom end of the front housing 1. Both the front housing 1 and the bottom housing 2 are integrally structured and fixedly connected via laser welding. The weld depth is 0.5-0.7mm, enhancing the sealing of the module after welding. Laser welding is a conventional technique. During the welding process, laser energy is concentrated at the irradiation location, and the welding lasts for approximately 5 seconds. A water cooling system is then used to rapidly reduce the temperature to a normal range, thereby ensuring that all components in the module are not affected.

[0026] Specifically, the front shell 1 (made of AL6061) and the back shell 2 (made of AL1050 / AL1070) of the one-piece lens barrel undergo cold forging, NC lathing, CNC lathe processing, sandblasting, anodizing, CNC welding to break the anodizing layer, and riveting with locating pins before being laser welded together. This achieves a "two-no, four-proof" effect: The module is assembled efficiently without glue or screws, with the mainboard and housing integrated, ensuring stability in high-temperature, high-humidity environments and vibration testing. The one-piece forging process provides high precision and glue-free assembly, eliminating the risk of camera fogging caused by aging glue. The front and back shells are welded together, eliminating the risk of seal aging, thus permanently achieving the module's four-proof (acid-proof, waterproof, fog-proof, and dust-proof) properties.

[0027] A mainboard module 4 is provided in the middle of the inner cavity of the front shell 1 and the bottom shell 2. Three groups of positioning columns 3 are connected to the four edges of the mainboard module 4. The three groups of positioning columns 3 are distributed in a triangle. The positioning columns 3 facilitate the staff to quickly limit the installation of the mainboard module 4, thereby improving the assembly work efficiency. Then, it is connected and fixed by soldering, thereby improving the stability of the fixed installation of the mainboard module 4 and preventing the mainboard module 4 from falling off during vibration. Compared with traditional glue fixation, it avoids the displacement of the lens optical axis and the optical axis of the chip on the mainboard module 4 under harsh conditions of ultra-high temperature or ultra-low temperature.

[0028] Because the front housing 1 is constructed of AL6061 material through a cold forging process, resulting in a one-piece structure and pre-designed positioning pinholes, and precisely riveted three positioning posts, components such as the module motherboard can be quickly assembled with a simple soldering process, eliminating complex processes such as dispensing glue and baking. This improves efficiency and yield, achieving a significant cost reduction. In some embodiments, the positioning posts 3 are made of brass and electroplated with tin to enhance their hardness and other properties.

[0029] The bottom end of the front shell 1 and the upper end of the bottom shell 2 are both provided with three groups of positioning holes 5, and the positioning holes 5 are adapted to the positioning columns 3. The bottom of the positioning columns 3 are slidably installed in the inner middle part of the positioning holes 5. The positioning columns 3 and the front shell 1 as well as the positioning columns 3 and the bottom shell 2 are fixedly installed by riveting, thereby maintaining the stability of the installation of the mainboard module 4.

[0030] The working principle of this utility model is:

[0031] The front shell 1 and the bottom shell 2 are made into an integrated structure by forging, and then the front shell 1 and the bottom shell 2 are welded and sealed by laser, which simplifies the assembly process and realizes a glue-free and screw-free assembly method. At the same time, three groups of positioning columns 3 are provided at the bottom end of the front shell 1 and the upper end of the bottom shell 2. The positioning columns 3 facilitate the staff to quickly limit the installation of the mainboard module 4, thereby improving the assembly work efficiency. Then, the connection and fixation are carried out by soldering, thereby improving the stability of the fixed installation of the mainboard module 4. The above device simplifies the assembly process of the front shell 1 and the bottom shell 2. Compared with traditional assembly, it has the advantages of reducing assembly costs and improving assembly work efficiency.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An integrated lens barrel with high sealing performance, characterized in that: It comprises a front shell (1), a bottom shell (2) being arranged at the middle of the bottom end of the front shell (1), the front shell (1) and the bottom shell (2) both being an integrated structure, and the front shell (1) and the bottom shell (2) being fixedly connected by laser welding.

2. The one-piece lens barrel with high sealing performance according to claim 1, characterized in that: A mainboard module (4) is arranged in the middle of the inner cavity of the front shell (1) and the bottom shell (2), and at least three groups of positioning columns (3) are connected to the four edges of the mainboard module (4), and the at least three groups of positioning columns (3) are evenly distributed.

3. The one-piece lens barrel with high sealing performance according to claim 2, characterized in that: The positioning column (3) and the front shell (1) as well as the positioning column (3) and the bottom shell (2) are fixedly installed by means of riveting.

4. The one-piece lens barrel with high sealing performance according to claim 2, characterized in that: The positioning column (3) is made of brass, and its surface is electroplated with tin.

5. The one-piece lens barrel with high sealing performance according to claim 3, characterized in that: The bottom end of the front shell (1) and the upper end of the bottom shell (2) are both provided with three groups of positioning holes (5), the positioning holes (5) are adapted to the positioning columns (3), and the bottom of the positioning columns (3) is slidably mounted in the middle of the inner side of the positioning holes (5).

6. An integrated lens barrel with high sealing performance according to any one of claims 1 to 5, characterized in that: The depth of welding is 0.5-0.7mm.

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