Plastic lens barrel convenient to install

Abstract

The utility model relates to the technical field of optical imaging equipment, in particular to a plastic lens cone convenient to install, which comprises a lens cone body, a connecting ring is arranged on one side of the lens cone body, and a magnet is embedded in one side of the connecting ring. The connecting ring is used for being structurally connected with the lens base so as to complete installation and connection of the lens barrel and the lens base; during installation, the magnet on the connecting ring and the magnet on the lens base attract each other to play an auxiliary role, the lens barrel and the lens base are mutually positioned through the magnetic attraction structure, meanwhile, the lens barrel and the lens base are prevented from falling off in the installation process, and the installation difficulty is reduced; in addition, the lens barrel body comprises the first barrel body and the second barrel body which have different inner diameters and can accommodate optical lenses with different radiuses. And the outer side of the lens cone body is also provided with the reinforcing convex ribs, so that the structural strength of the lens cone can be enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of optical imaging equipment, in particular to a plastic lens barrel which is easy to install. Background Art

[0002] The lens barrel is a metal or plastic cylinder that holds the lens' optical elements. As camera lenses on the market continue to evolve toward smaller sizes, larger image areas, and higher pixel counts, the requirements for the dimensional accuracy of lens barrels are becoming increasingly stringent. However, small lens barrels can be difficult to position and install. Utility Model Content

[0003] Based on this, the purpose of the present invention is to provide a plastic lens barrel that is easy to install.

[0004] The utility model adopts the following technical solutions:

[0005] A plastic lens barrel that is easy to install includes a lens barrel body, which is an axially through-hollow structure and has an object end and a mounting end. The mounting end of the lens barrel body is provided with a connecting ring, which is integrally formed with the lens barrel body. The connecting ring is provided with a circular mounting surface on the side facing away from the object end, and a magnet is embedded in the mounting surface.

[0006] Preferably, the magnet is annular.

[0007] Preferably, the outer wall of the connecting ring is provided with an external thread.

[0008] Preferably, the inner wall of the connecting ring is provided with an internal thread.

[0009] Preferably, the outer wall of the lens barrel body is provided with reinforcing ribs distributed in a circumferential array.

[0010] Preferably, the lens barrel body includes an integrally formed first barrel and a second barrel; an axially extending first mounting cavity is provided on the inner side of the first barrel, and an axially extending second mounting cavity is provided on the inner side of the second barrel; the first mounting cavity and the second mounting cavity are connected to each other; the inner diameter of the first mounting cavity is smaller than the inner diameter of the second mounting cavity.

[0011] Preferably, an inner wall of the second installation cavity is provided with an installation slot.

[0012] Preferably, an annular abutment ring is provided at the opening of the lens barrel body facing the object end.

[0013] Preferably, a positioning protrusion is provided on the side of the abutment ring facing the mounting end.

[0014] Preferably, the inner wall of the abutment ring is provided with a light-guiding inclined surface.

[0015] The utility model discloses a beneficial effect is:

[0016] The utility model relates to a convenient installation's plastic mirror barrel, including mirror barrel body, and is equipped with the connecting ring in one side of mirror barrel body, is embedded with magnet in one side of connecting ring, connecting ring is used for with the structure connection of mirror seat to complete the installation connection of mirror barrel and mirror seat, when installing, the magnet on connecting ring will with the magnet on mirror seat mutual attraction, play the auxiliary function, through the magnetic attraction structure makes mirror barrel and mirror seat mutual positioning, prevent the falling of mirror barrel and mirror seat in the installation process simultaneously, reduce the installation difficulty, in addition, mirror barrel body includes the first cylinder and second cylinder of different inside diameters, can accommodate the optical lens of different radius, still be equipped with the reinforcing boss on the outside of mirror barrel body, can strengthen the structural strength of mirror barrel. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structure schematic diagram of convenient installation's plastic mirror barrel of the first embodiment of the utility model,

[0018] Figure 2 It is the structure schematic diagram of another angle of plastic mirror barrel, Figure 1

[0019] Figure 3 It is the plan view of plastic mirror barrel, Figure 1

[0020] Figure 4 It is the section view along A-A, Figure 3

[0021] Figure 5 It is the structure schematic diagram of convenient installation's plastic mirror barrel of the second embodiment of the utility model,

[0022] Reference numerals in the drawing:

[0023] 10-mirror barrel body, 10a-object image end, 10b-installation end, 11-first cylinder, 111-first installation cavity, 12-second cylinder, 121-second installation cavity, 122-installation clamping groove, 13-abutment ring, 131-positioning convex point, 132-light guide inclined surface, 20-connecting ring, 21-installation plane, 22-magnet, 23-external thread, 24-reinforcing boss, 25-internal thread. DETAILED DESCRIPTION

[0024] The technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment, and obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making the creative labor belong to the range of protection of the utility model.​​​

[0025] In the description of this utility model, it should be noted that the terms "vertical," "upper," "lower," and "horizontal," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, direct connections, connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0027] like Figures 1 to 4 The figure shows a first embodiment of a plastic lens barrel that is easy to install according to the present invention, comprising a lens barrel body 10. The lens barrel body 10 is an axially through-hollow structure having an object end 10a and a mounting end 10b. The mounting end 10b of the lens barrel body 10 is provided with a connecting ring 20, which is integrally formed with the lens barrel body 10. The side of the connecting ring 20 facing away from the object end 10a is provided with a circular mounting surface 21, and the mounting surface 21 is embedded with a magnet 22. It should be noted that the magnet 22 can be exposed from the mounting surface 21 or completely embedded in the connecting ring 20, provided that the distance between the lens barrel and the magnet 22 on the lens base is sufficient to ensure sufficient magnetic attraction.

[0028] During installation, the lens barrel is placed on the lens base. Correspondingly, a magnet 22 is also provided on the lens base. The magnet 22 of the lens barrel and the magnet 22 of the lens base attract each other. Under the action of magnetic attraction, the lens barrel is automatically positioned to the installation position, thereby improving assembly accuracy. In addition, under the action of magnetic attraction, the lens barrels attract each other, thereby preventing the lens barrel from falling off the lens base during installation. This solves the problem of small-sized lens barrels being difficult to install.

[0029] The plastic lens barrel for easy installation of the present invention can be made by distributed injection molding. First, the lens barrel body 10 is injection molded using a first set of molds, and then the lens barrel body 10 and the magnet 22 are placed in a second set of molds for injection molding to obtain the plastic lens barrel of the present invention.

[0030] A further improvement to the above solution is that the magnet 22 is arc-shaped. When the magnet 22 of the lens barrel and the magnet 22 of the lens base attract each other, the connecting ring 20 of the lens barrel and the mounting position of the lens base can be coaxially arranged to complete the mutual positioning, which is convenient for subsequent assembly.

[0031] A further improvement to the above solution is that, in the first embodiment of the present invention, an outer wall of the connecting ring 20 is provided with an external thread 23 , and the connecting portion of the mirror holder is connected to the outer side of the connecting ring 20 via threads.

[0032] A further improvement to the above scheme is that the outer wall of the lens barrel body 10 is provided with reinforcing ribs 24 distributed in a circular array. The provision of the reinforcing ribs 24 can enhance the structural strength of the lens barrel and facilitate the twisting of the lens barrel body 10, so as to facilitate the installation of the lens barrel body 10 and the lens holder, as well as the focusing of the lens barrel.

[0033] A further improvement to the above solution is that the lens barrel body 10 includes an integrally formed first barrel 11 and a second barrel 12; an axially extending first mounting cavity 111 is provided on the inner side of the first barrel 11, and an axially extending second mounting cavity 121 is provided on the inner side of the second barrel 12; the first mounting cavity 111 and the second mounting cavity 121 are communicated with each other; the inner diameter of the first mounting cavity 111 is smaller than the inner diameter of the second mounting cavity 121. The first mounting cavity 111 and the second mounting cavity 121 with different inner diameters are respectively used to install optical lenses with different radii; during installation, the optical lens with a smaller radius is first installed in the first mounting cavity 111, and the optical lens is fixed to the first mounting cavity 111 by laser welding, and then the optical lens with a larger radius is installed in the second mounting cavity 121, and the optical lens is also fixed to the second mounting cavity 121 by laser welding, thereby completing the installation of optical lenses of different sizes.

[0034] Specifically, see Figure 4 The inner wall of the second mounting cavity 121 is provided with a mounting groove 122. When installing the optical lens, the lens barrel body 10 is placed vertically, and the optical lens enters the lens barrel body 10 vertically from above and abuts against the mounting groove 122. The mounting groove 122 can play a positioning role for the optical lens, further reducing the difficulty of installation.

[0035] A further improvement to the above scheme is that a circular abutment ring 13 is provided at the opening of the lens barrel body 10 facing the object end 10a. The abutment ring 13 serves as a limiter. After the optical lens is vertically installed into the lens barrel body 10, it will be stuck above the abutment ring 13, which can prevent the optical lens from detaching, facilitating subsequent laser welding and improving the assembly accuracy of the optical lens. Furthermore, a plurality of positioning protrusions 131 are provided on the side of the abutment ring 13 facing the mounting end 10b. Corresponding recesses are machined on the optical lens. The recesses cooperate with the positioning protrusions 131 to limit the optical lens in the horizontal direction, thereby preventing the optical lens from shaking and further improving the accuracy of laser welding.

[0036] Furthermore, a light guiding slope 132 is provided on the inner wall of the abutting ring 13 . The light guiding slope 132 gradually tilts toward the center of the circle toward the mounting end 10 b . The light guiding slope 132 guides the incident light and increases the utilization rate of the light.

[0037] See also Figure 5 The second embodiment of the utility model is a plastic lens barrel that is easy to install. The difference from the first embodiment is that the outer wall of the connecting ring 20 is not provided with an external thread 23, and the inner wall of the connecting ring 20 is provided with an internal thread 25. When the lens barrel and the lens base are assembled, the connecting part of the lens base is connected to the inner side of the connecting ring 20 through threads.

[0038] Compared with the prior art, the plastic lens barrel that is easy to install involved in the utility model includes a lens barrel body 10, and a connecting ring 20 is provided on one side of the lens barrel body 10, and a magnet 22 is embedded on one side of the connecting ring 20; the connecting ring 20 is used to structurally connect with the lens base to complete the installation connection between the lens barrel and the lens base; during installation, the magnet 22 on the connecting ring 20 will attract each other with the magnet 22 on the lens base, and the lens barrel and the lens base are positioned relative to each other through the magnetic attraction structure, while preventing the lens barrel and the lens base from falling during the installation process, reducing the difficulty of installation; in addition, the lens barrel body 10 includes a first barrel body 11 and a second barrel body 12 with different inner diameters, which can accommodate optical lenses with different radii; a reinforcing rib 24 is also provided on the outside of the lens barrel body 10, which can enhance the structural strength of the lens barrel.

[0039] The above merely represents the preferred technical solution of the present invention. While the description is relatively specific and detailed, it should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the concept of the present invention, and the present invention is intended to encompass such modifications and variations.

Claims

1. A plastic lens barrel that is easy to install, characterized in that: The lens barrel body comprises a lens barrel body, which is an axially through-hollow structure and has an object end and a mounting end; a connecting ring is provided at the mounting end of the lens barrel body, and the connecting ring is integrally formed with the lens barrel body; a circular mounting plane is provided on the side of the connecting ring facing away from the object end, and a magnet is embedded in the mounting plane.

2. The easy-to-install plastic lens barrel according to claim 1, characterized in that: The magnet is in a ring shape.

3. The easy-to-install plastic lens barrel according to claim 1, characterized in that: The outer wall of the connecting ring is provided with external threads.

4. The easy-to-install plastic lens barrel according to claim 1, characterized in that: The inner wall of the connecting ring is provided with an internal thread.

5. The easy-to-install plastic lens barrel according to claim 1, characterized in that: The outer wall of the lens barrel body is provided with reinforcing ribs distributed in a circumferential array.

6. The easy-to-install plastic lens barrel according to claim 1, characterized in that: The lens barrel body includes an integrally formed first barrel and a second barrel; an axially extending first mounting cavity is provided on the inner side of the first barrel, and an axially extending second mounting cavity is provided on the inner side of the second barrel; the first mounting cavity and the second mounting cavity are connected to each other; the inner diameter of the first mounting cavity is smaller than the inner diameter of the second mounting cavity.

7. The easy-to-install plastic lens barrel according to claim 6, characterized in that: An inner wall of the second installation cavity is provided with an installation slot.

8. The easy-to-install plastic lens barrel according to claim 1, characterized in that: An annular abutment ring is provided at the opening of the lens barrel body facing the object image end.

9. The easy-to-install plastic lens barrel according to claim 8, characterized in that: A positioning protrusion is provided on one side of the abutting ring facing the mounting end.

10. The easy-to-install plastic lens barrel according to claim 8, characterized in that: The inner wall of the abutting ring is provided with a light guiding inclined surface.

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