Device for manually adjusting lens focal length ring outside protective shell
By designing a device for manually adjusting the lens focal length outside the protective case, the problem of efficient manual adjustment of the lens focal length in the field of industrial monitoring in the prior art is solved, and fast and clear focal length adjustment suitable for various types of lenses is achieved, which improves installation efficiency and reduces costs.
Patent Information
- Application Number
- CN202510560690.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2025-06-13
AI Technical Summary
In the field of industrial monitoring, it is difficult for the prior art to achieve efficient manual adjustment of the lens focal length outside the protective case, and the traditional manual adjustment method has limited accuracy, so the operation convenience needs to be improved.
A device including a focus ring fixer, a monitoring device housing, a lens focus ring, a fixing device housing, a fixed adjustment pressing plate, a transmission ring, a grip fixture and a clamping bevel rod is designed. The mechanical transmission outside the protective case is realized through a universal focus ring fixer, which is suitable for various types of lenses.
The device enables quick and clear adjustment of the lens focal length outside the protective case, improves installation and commissioning efficiency, adapts to different lens models and sizes, and reduces cost and power consumption.
Smart Images
Figure CN120143387A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the field of industrial monitoring and relates to a device for manually adjusting the lens focus ring outside the protective housing. Background Art
[0002] With the continuous development of technology, the demand for automation, precision, and rapid response in lens focus adjustment in various industries is increasing. In industrial monitoring, during the installation of equipment, adjusting the lens focus to accurately and clearly monitor the measured target is an important step. Traditional manual focus adjustment mainly relies on directly rotating the focus ring on the lens. This adjustment method has limited accuracy and the operation convenience needs to be improved. In the trend of miniaturization and intelligentization of optical instruments, electric adjustment devices have emerged. They can change the focus by driving the internal mechanical structure of the lens through a motor.
[0003] Regarding the device for adjusting the lens focus, a patent named "A Zoom Structure of a Lens" published by Ding Hui focuses on the problem of inaccurate focus adjustment in the professional photography field; a patent named "A Camera Adjusting Structure and a Camera" published by Song Youchun, Song Yongsheng, and Li Wenchuang focuses on ensuring the unity of lens focus adjustment and infrared lamp focus adjustment; a patent named "A Camera Housing with an Externally Adjustable Lens Focus" published by Li Hua is a housing device for axially pushing and controlling the position of the lens by a motor; a patent named "A Lens Focus Adjusting Device" published by Xu Yuechuan, Duan Yuren, and Liu Renyu realizes the focus adjustment by adjusting the position of the camera sensor, focusing on another adjustment method for the focus of the lens and the camera sensor itself. In summary, it can be found that previous invention patents all focus on the focus adjustment method of the lens itself or for obtaining higher precision, while the focus of this patent is to realize the adjustment of the camera lens focus outside the protective housing, and this device has a certain degree of portability and is suitable for different lens models and sizes. In the current industrial monitoring field, more emphasis is often placed on the convenience of engineering practical applications, and relatively less attention is paid to how to adjust the focus of the lens itself. In the current engineering field, in order to reduce costs and power consumption, the lenses commonly used in industrial monitoring equipment usually do not support the autofocus function. One solution is to extend the focus lens part outside the housing to facilitate the external focus adjustment after installation. However, this method will affect the monitoring accuracy and the hardware life because the lens is exposed to the external environment for a long time. For example, it is difficult to ensure the measurement stability of the monitoring equipment when encountering extreme weather. At the same time, during the engineering practice process, the lens focus is often adjusted before it is installed inside the housing, which greatly reduces the installation efficiency. In addition, due to the different sizes of the focus rings caused by different lens models and sizes, it is required that the external adjustment equipment of the protective housing must have a certain degree of portability.
[0004] With the progress of science and technology, compared with automatic focus adjustment, manual adjustment of the lens focus increases the workload, complicates the installation process, and greatly improves the requirements for the level of installers. However, from the perspective of cost reduction, the manual adjustment method is still an indispensable option. To improve the efficiency of manual adjustment and the portability of the device, it is particularly important to develop a device for manually adjusting the lens focus ring outside the protective shell. Summary of the Invention
[0005] The object of the present invention is to develop a device for conveniently manually adjusting the lens focus outside industrial monitoring equipment, realizing external focus adjustment of the monitoring equipment. The key is how to make the adjustment device applicable to various models of lenses to meet the portability of the adjustment device, facilitate on-site adjustment of the monitoring equipment, and enable it to quickly and clearly identify the measured target points.
[0006] The technical solution of the present invention:
[0007] A device for manually adjusting the lens focus ring outside the protective shell, comprising a focus ring fixer 1, a monitoring equipment housing 2, a lens focus ring 3, a fixer housing 4, a fixed adjustment pressing piece 5, a transmission ring 6, a grip fixture 7, a grip curved rod 8, a transmission ring guiding hole 9, a fixer housing opening 10, a fixer housing side gear 11, a fixed adjustment pressing piece pressing plane 12, a fixed adjustment pressing piece side engaging teeth 13, a fixed adjustment pressing piece support 14, a grip curved rod guiding shaft 15, a grip curved rod through hole 16, a grip curved rod fixing shaft 17, a grip fixture fixing shaft 18, a grip fixture front claw 19, and a grip curved rod fixing groove 20;
[0008] The fixer housing 4 is a hollow cylinder with a circular through hole in the middle. The outer surface of the cylinder is a gear structure. The upper surface of the cylinder has a fixer housing opening 10 with an arc-shaped axis. The interior of the fixer housing opening 10 has engaging teeth, and the inner surface has a cylindrical grip curved rod fixing groove 20. The circular through hole of the fixer housing 4 is for the lens focus ring 3 to extend into;
[0009] The grip curved rod 8 is a hollow arc-shaped structure mainly composed of two upper and lower arc plates connected by an outer arc plate. A plurality of grip curved rods 8 are spaced apart to form a circle; the upper arc plate is provided with a grip curved rod through hole 16, and the grip fixture fixing shaft 18 on the grip fixture 7 is inserted into the hollow arc-shaped structure and fixed through the grip curved rod through hole 16; a cylindrical grip curved rod guiding shaft 15 and a grip curved rod fixing shaft 17 are installed on the upper arc plate, which are respectively matched with the transmission ring guiding hole 9 on the transmission ring 6 and the grip curved rod fixing groove 20 on the fixer housing 4;
[0010] The gripping clamp 7 is a T-shaped mechanical claw, which is divided into a vertical rectangular parallelepiped member and a horizontal gripping clamp front claw 19 with an arc on the outer surface, and the number of the gripping clamp front claws 19 corresponds to the gripping crank rod 8; the end of the rectangular parallelepiped member is provided with a gripping clamp fixing shaft 18, which is connected to the gripping crank rod through hole 16 on the gripping crank rod 8;
[0011] The transmission ring 6 is a circular thin sheet with a circular hole in the middle for passing the lens, and four rectangular transmission ring guide holes 9 are opened at equal angles on the transmission ring 6. The axis of the long axis direction of each transmission ring guide hole 9 passes through the center of the circle of the circular ring, and is used to pass the clamping crank rod guide shaft 15 on the clamping crank rod 8;
[0012] The fixed adjustment pressing sheet 5 includes a fixed adjustment pressing sheet pressing plane 12, a fixed adjustment pressing sheet side bite teeth 13 and a fixed adjustment pressing sheet support 14. The side of the fixed adjustment pressing sheet pressing plane 12 is provided with a serrated fixed adjustment pressing sheet side bite teeth 13. One end of the lower surface of the fixed adjustment pressing sheet pressing plane 12 is connected to the top of the rectangular columnar fixed adjustment pressing sheet support 14, and the bottom end of the fixed adjustment pressing sheet support 14 is fixedly connected to the transmission ring 6.
[0013] The internal structure of the focusing ring fixture 1 is as follows: the clamping bent rod 8 is installed on the clamping bent rod fixing groove 20 of the fixture housing 4 through the clamping bent rod fixing shaft 17, the gripping clamp front claw 19 is fixed to the clamping bent rod through hole 16 through the gripping clamp fixing shaft 17, the clamping bent rod guide shaft 15 is installed in the transmission ring guide hole 9 of the transmission ring 6, the fixed adjustment pressing plate 5 is fixed to the surface of the transmission ring 6, and extends out of the fixture housing 4 through the fixture housing opening 10.
[0014] The beneficial effects of the present invention are as follows: the device, through a universal focus ring holder, can provide mechanical transmission outside the protective shell when there is no gear at the lens focus ring and when the lens size is uncertain, making on-site installation and equipment debugging more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a front view schematic diagram of the installation position of the focusing device.
[0016] Figure 2 It is a left view schematic diagram of the installation position of the focusing device.
[0017] Figure 3 This is a schematic diagram of the internal structure of the focus ring holder.
[0018] Figure 4 Schematic diagram of a top view of the focus ring holder clamping mechanism.
[0019] Figure 5 2. It is a top view schematic diagram of the focusing ring holder transmission ring.
[0020] Figure 6 It is a top view schematic diagram of the outer shell of the focus ring fixer.
[0021] Figure 7 It is a schematic diagram of the adjustment pressing piece of the focus ring fixer.
[0022] Figure 8 It is a top view schematic diagram of the adjustment pressing piece of the focus ring fixer.
[0023] Figure 9 It is a schematic diagram of the opening on the outer shell of the focus ring fixer.
[0024] Figure 10 It is an exploded schematic diagram of the gripping mechanism of the focus ring fixer.
[0025] Figure 11 It is a top view schematic diagram of the initial position of the gripping mechanism of the focus ring fixer and the transmission ring of the focus ring fixer.
[0026] Figure 12 It is a top view schematic diagram of the position of the gripping mechanism of the focus ring fixer and the transmission ring of the focus ring fixer after rotating a certain angle.
[0027] Figure 13 It is a schematic diagram of the fixed groove of the gripping curved rod on the inner side of the outer shell of the focus ring fixer.
[0028] In the figure: 1 focus ring fixer, 2 outer shell of the monitoring device, 3 lens focus ring, 4 outer shell of the fixer, 5 fixed adjustment pressing piece, 6 transmission ring, 7 gripping fixture, 8 gripping curved rod, 9 guiding hole of the transmission ring, 10 opening on the outer shell of the fixer, 11 side gear of the outer shell of the fixer, 12 pressing plane of the fixed adjustment pressing piece, 13 side engaging teeth of the fixed adjustment pressing piece, 14 support of the fixed adjustment pressing piece, 15 guiding shaft of the gripping curved rod, 16 through hole of the gripping curved rod, 17 fixed shaft of the gripping curved rod, 18 fixed shaft of the gripping fixture, 19 front claw of the gripping fixture, 20 fixed groove of the gripping curved rod. Detailed implementation manners
[0029] The following combines the technical solutions and the drawings to describe in detail the specific implementation manners of the present invention.
[0030] A device for manually adjusting the focal length ring of a lens outside a protective shell includes a focus ring fixer 1, an outer shell 2 of a monitoring device, a lens focus ring 3, an outer shell 4 of the fixer, a fixed adjustment pressing piece 5, a transmission ring 6, a gripping fixture 7, a gripping curved rod 8, a guiding hole 9 of the transmission ring, an opening 10 on the outer shell of the fixer, a side gear 11 of the outer shell of the fixer, a pressing plane 12 of the fixed adjustment pressing piece, side engaging teeth 13 of the fixed adjustment pressing piece, a support 14 of the fixed adjustment pressing piece, a guiding shaft 15 of the gripping curved rod, a through hole 16 of the gripping curved rod, a fixed shaft 17 of the gripping curved rod, a fixed shaft 18 of the gripping fixture, a front claw 19 of the gripping fixture, and a fixed groove 20 of the gripping curved rod.
[0031] The holder housing 4 is a hollow cylinder with a circular through hole in the middle. The outer surface of the cylinder is a gear structure. The upper surface of the cylinder is provided with a holder housing opening 10 with an arc-shaped axis. The holder housing opening 10 has meshing teeth inside and a cylindrical clamping crank rod fixing groove 20 on the inner surface. The circular through hole of the holder housing 4 is used for the lens focusing ring 3 to extend into.
[0032] The clamping bent rod 8 is mainly composed of a hollow arc structure consisting of two upper and lower arc plates connected by an outer arc plate, and a plurality of clamping bent rods 8 are spaced to form a circle; a clamping bent rod through hole 16 is opened on the upper arc plate, and a gripping fixture fixing shaft 18 on the gripping fixture 7 is inserted into the hollow arc structure and fixed through the clamping bent rod through hole 16; a cylindrical clamping bent rod guide shaft 15 and a clamping bent rod fixing shaft 17 are installed on the upper arc plate, which respectively cooperate with the transmission ring guide hole 9 on the transmission ring 6 and the clamping bent rod fixing groove 20 on the fixer housing 4;
[0033] The gripping clamp 7 is a T-shaped mechanical claw, which is divided into a vertical rectangular parallelepiped member and a horizontal gripping clamp front claw 19 with an arc on the outer surface, and the number of the gripping clamp front claws 19 corresponds to the gripping crank rod 8; the end of the rectangular parallelepiped member is provided with a gripping clamp fixing shaft 18, which is connected to the gripping crank rod through hole 16 on the gripping crank rod 8;
[0034] The transmission ring 6 is a circular thin sheet with a circular hole in the middle for passing the lens, and four rectangular transmission ring guide holes 9 are opened at equal angles on the transmission ring 6. The axis of the long axis direction of each transmission ring guide hole 9 passes through the center of the circle of the circular ring, and is used to pass the clamping crank rod guide shaft 15 on the clamping crank rod 8;
[0035] The fixed adjustment pressing sheet 5 includes a fixed adjustment pressing sheet pressing plane 12, a fixed adjustment pressing sheet side bite teeth 13 and a fixed adjustment pressing sheet support 14. The side of the fixed adjustment pressing sheet pressing plane 12 is provided with a serrated fixed adjustment pressing sheet side bite teeth 13. One end of the lower surface of the fixed adjustment pressing sheet pressing plane 12 is connected to the top of the rectangular columnar fixed adjustment pressing sheet support 14, and the bottom end of the fixed adjustment pressing sheet support 14 is fixedly connected to the transmission ring 6.
[0036] The internal clamp of the focus ring holder 1 is clamped on the lens focus ring 3, a part of the focus ring holder 1 extends out of the bottom of the monitoring device housing 2, the clamping crank rod 8 is installed in the clamping crank rod fixing groove 20 on the holder housing 4 through the clamping crank rod fixing shaft 17, the gripping clamp front claw 19 is fixed in the clamping crank rod through hole 16 through the gripping clamp fixing shaft 17, the clamping crank rod guide shaft 15 is installed in the transmission ring guide hole 9, the fixed adjustment pressing sheet 5 is fixed on the surface of the transmission ring 6, and extends out of the holder housing 4 through the holder housing opening 10;
[0037] Before installing the lens on the monitoring device housing 2, install the focus ring holder 1. Install the focus ring holder 1 at the focus ring part of the camera lens. By pressing the fixed adjustment pressing piece 5 on the focus ring holder 1, the driving ring 6 can be pushed. Due to the movement of the driving ring 6, the clamping lever 8 and the gripping fixture 7 are driven. When the focus ring holder 1 is tightly pressed and connected to the lens driving ring, release the fixed adjustment pressing piece 5. Since there are fixed adjustment pressing piece side engagement teeth 13 on it, it can engage with the sawteeth at the opening 10 of the holder housing on the holder housing 4 to prevent loosening. After the installation of the focus ring holder 1 is completed, since the size of the gripping fixture 7 changes with the pushing of the fixed adjustment pressing piece 5 during the adjustment process, it can adapt to lenses of various sizes. Figure 11 The top view before installing the focus ring holder 1 is shown. Figure 12 The top view after installing the focus ring holder 1 is shown.
[0038] After the camera is installed inside the housing, start the device. By rotating the focus ring holder 1 extending out of the monitoring device housing 2, the focal length of the lens can be changed.
Claims
1. A device for manually adjusting the focus ring of a lens outside a protective shell, characterized in that: The device for manually adjusting the lens focus ring outside the protective shell comprises a focus ring fixer (1), a monitoring device shell (2), a lens focus ring (3), a fixer shell (4), a fixed adjustment pressing piece (5), a transmission ring (6), a gripping fixture (7), a gripping crank rod (8), a transmission ring guide hole (9), a fixer shell opening (10), a fixer shell side gear (11), a fixed adjustment pressing piece pressing plane (12), a fixed adjustment pressing piece side bite teeth (13), a fixed adjustment pressing piece support (14), a gripping crank rod guide shaft (15), a gripping crank rod through hole (16), a gripping crank rod fixing shaft (17), a gripping fixture fixing shaft (18), a gripping fixture front claw (19) and a gripping crank rod fixing groove (20); The holder housing (4) is a hollow cylinder with a circular through hole in the middle, the outer surface of the cylinder is a gear structure, the upper surface of the cylinder is provided with a holder housing opening (10) with an arc-shaped axis, the inside of the holder housing opening (10) is provided with meshing teeth, and the inner surface is provided with a cylindrical clamping crank rod fixing groove (20); the circular through hole of the holder housing (4) is used for the lens focus ring (3) to extend into; The clamping bent rod (8) is mainly composed of a hollow arc structure consisting of two upper and lower arc plates connected by an outer arc plate, and a plurality of clamping bent rods (8) are spaced to form a circle; a clamping bent rod through hole (16) is opened on the upper arc plate, and a gripping clamp fixing shaft (18) on the gripping clamp (7) is inserted into the hollow arc structure and fixed through the clamping bent rod through hole (16); a cylindrical clamping bent rod guide shaft (15) and a clamping bent rod fixing shaft (17) are installed on the upper arc plate, which respectively cooperate with the transmission ring guide hole (9) on the transmission ring (6) and the clamping bent rod fixing groove (20) on the fixer housing (4); The gripping clamp (7) is a T-shaped mechanical claw, which is divided into a vertical rectangular parallelepiped component and a horizontal gripping clamp front claw (19) with an arc on the outer surface, and the number of the gripping clamp front claws corresponds to the gripping curved rod (8); the end of the rectangular parallelepiped component is provided with a gripping clamp fixing shaft (18) connected to the gripping curved rod through hole (16) on the gripping curved rod (8); The transmission ring (6) is a circular thin sheet with a circular hole in the middle for passing the lens, and four rectangular transmission ring guide holes (9) are opened at equal angles on the transmission ring. The axis of the long axis direction of each transmission ring guide hole (9) passes through the center of the circular ring and is used for passing the clamping crank rod guide shaft (15) on the clamping crank rod (8); The fixed adjustment pressing sheet (5) comprises a fixed adjustment pressing sheet pressing plane (12), a fixed adjustment pressing sheet side engaging tooth (13) and a fixed adjustment pressing sheet support (14); a serrated fixed adjustment pressing sheet side engaging tooth (13) is left on the side of the fixed adjustment pressing sheet pressing plane (12); one end of the lower surface of the fixed adjustment pressing sheet pressing plane (12) is connected to the top end of the fixed adjustment pressing sheet support (14) in the shape of a rectangular column; and the bottom end of the fixed adjustment pressing sheet support (14) is fixedly connected to the transmission ring (6).
2. A device for manually adjusting the focus ring of a lens outside a protective shell according to claim 1, characterized in that: The internal structure of the focus ring fixture (1) is as follows: the clamping bent rod (8) is installed on the clamping bent rod fixing groove (20) of the fixture housing (4) through the clamping bent rod fixing shaft (17); the gripping clamp front claw (19) is fixed to the clamping bent rod through hole (16) through the gripping clamp fixing shaft (17); the clamping bent rod guide shaft (15) is installed in the transmission ring guide hole (9) of the transmission ring (6); the fixed adjustment pressing plate (5) is fixed to the surface of the transmission ring (6) and extends out of the fixture housing (4) through the fixture housing opening (10).