Magnetic zooming device and lighting device

Through the design of the magnetic zoom device and the planar mirror, the problem of flashlights not being focused underwater and poor sealing in the prior art is solved, and a lighting device with zooming and high sealing underwater is realized.

CN222256246UActive Publication Date: 2024-12-27杨朝赞
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Patent Information

Application Number
CN202420936853.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-30
Publication Date
2024-12-27
Estimated Expiration
2034-04-30

AI Technical Summary

Technical Problem

When used underwater, the existing zoom flashlight cannot focus because the convex lens comes into contact with water, and the telescopic adjustment leads to poor sealing performance, making it difficult to work underwater.

Method used

Using magnetic zoom device, by inserting a moving cavity and zoom device in the housing, the axial movement of the zoom device is achieved using magnetic connectors and spiral groove structures, adjust the distance between the light source and the convex lens, and combine the plane mirror to prevent water from contacting the convex lens, ensuring the focus of light .

Benefits of technology

The function of zooming underwater is achieved while improving sealing, ensuring that light can be focused without direct contact with the convex lens.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a magnetic zooming device and a lighting device, and the device comprises a housing which is internally provided with a moving cavity; the zooming device is arranged in the moving cavity and can axially move along the moving cavity; the shell is sleeved with the control piece, the control piece is connected with the zooming device through a connecting structure, the control piece and the shell rotate relatively, the zooming device is driven by the connecting structure to move axially in the moving cavity, the distance between the zooming device and the light source is controlled, and zooming is achieved. The lighting device comprises the magnetic zooming device, a light source is arranged in the shell, and a plane mirror is mounted on the shell on one side of the moving cavity, so that light rays emitted from the light source are emitted from the plane mirror after passing through the zooming device. Compared with the prior art, the underwater zoom lens has the advantages that the structure is simple, and the underwater zoom work can be realized.
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Description

Technical Field

[0001] The utility model belongs to the field of optical zoom, and in particular relates to a magnetic zoom device and a lighting device. Background Art

[0002] With the promotion and popularization of digital imaging technology, optical imaging devices are widely used in various types of equipment, such as a wide variety of portable and small devices. Miniaturized optical imaging devices, such as small zoom lenses, are widely needed. A flashlight is a lighting tool. One type is a traditional flashlight that cannot adjust the focusing / defocusing light source, and the other type is a zoom flashlight with an adjustable focusing / defocusing light source. As for a zoomable flashlight, it is generally achieved by relative movement of the active flashlight lamp head and the body of the flashlight, and by using a physical optical zoom component (convex lens or refractive lamp cup) that can move back and forth in the lamp head tube. The physical optical zoom component (convex lens or refractive lamp cup) and the light source of the flashlight are relatively displaced, and the light source generated by the light source (such as a light emitting diode LED) is concentrated and focused by adjusting the distance, so that the light source can be concentrated to illuminate a small area. However, most existing zoom flashlights are telescopically adjusted, which is difficult to limit. In addition, due to the telescopic adjustment, the internal sealing is poor, making it difficult to work underwater. Even if the flashlight is put into water after zooming, the convex lens directly becomes a plane mirror due to the contact between the convex lens and the water, and cannot be focused. Therefore, it is very important to obtain a magnetic zoom device and lighting device that overcome the above defects. Utility Model Content

[0003] In order to solve at least one of the above technical problems, the utility model provides a magnetic zoom device, comprising:

[0004] A housing having a movable cavity therein;

[0005] A zoom device is arranged in the movable cavity and can move along the axial direction of the movable cavity;

[0006] A control member is sleeved outside the housing, the control member is connected to the zoom device via a connecting structure, the control member and the housing rotate relative to each other and the zoom device is driven to move axially in the moving cavity via the connecting structure, so as to control the distance between the zoom device and the light source and realize zooming;

[0007] The connecting structure includes at least one first connecting member, at least one second connecting member, and at least one first spiral groove opened on the shell, the first connecting member is located in the first spiral groove, the second connecting member is arranged on the zoom device, and the first connecting member and the second connecting member are arranged relative to each other so that a mutual traction force is formed therebetween, so that the second connecting member can be driven to move when the first connecting member moves.

[0008] At least one of the first connecting member and the second connecting member is a magnetic body, and the other is a material that cooperates with the magnetic body to generate an interaction force. If the first connecting member is a magnetic body and the second connecting member is a material that cooperates with the magnetic body to generate an interaction force so that the first connecting member and the second connecting member are magnetically connected to each other, such as iron, then the zoom device is made of other materials that do not generate an interaction force with the magnetic material, such as plastic.

[0009] A second straight groove cooperating with the first spiral groove is formed on the inner wall of the control member, and the first connecting member is at least partially located in the first spiral groove and at least partially located in the second straight groove, so that when the control member rotates, the first connecting member moves in the first spiral groove.

[0010] Through the above technical solution, a magnetic interaction force is generated between the first connecting member and the second connecting member, so that when the first connecting member rotates and moves, the second connecting member is driven to move. Since the first connecting member moves in the spiral groove, the axial movement of the second connecting member can be achieved to adjust the distance between the zoom device and the lighting device to achieve zoom.

[0011] Another form of interaction force between the first connecting member and the second connecting member is that the first spiral groove is a through groove, and the first connecting member and the second connecting member are fixedly connected by a connecting column, that is, the connecting column passes through the through groove to connect the first connecting member and the second connecting member.

[0012] Through the above technical solution, the first connecting member and the second connecting member are directly connected through the connecting column, which directly drives the movement of the zoom device, but the sealing performance of this method is not as good as that of the magnetic connection method.

[0013] The zoom device comprises a convex lens body and a fixing frame, the second connecting member is installed on the outer wall of the fixing frame, the convex lens is fixed on the side of the fixing frame, and a mounting groove is provided on the outer wall of the fixing frame, and the second connecting member is installed in the mounting groove.

[0014] A lighting device includes the above-mentioned magnetic zoom device, the housing has a built-in light source, and a plane mirror is installed on the housing on one side of the movable cavity, so that the light from the light source passes through the zoom device and then is emitted from the plane mirror. It also includes a head ring, which is threadedly connected to the outer wall of the end of the housing, and an active concave ring is provided on the inner wall of the head ring to cooperate with the axial movement of the control member.

[0015] Through the above technical solution, due to the setting of the plane mirror, the water will not directly contact the convex lens, so the light can still be focused.

[0016] Compared with the prior art, the utility model has the advantages that the utility model has a simple structure and can realize zooming work underwater. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional schematic diagram of the utility model;

[0018] Figure 2 This is the front view of the housing of the utility model;

[0019] Figure 3 It is a three-dimensional diagram of the fixing frame of the utility model;

[0020] Figure 4 It is a cross-sectional schematic diagram of the control component of the utility model;

[0021] Figure 5 This is a schematic cross-sectional view of the utility model being put into use;

[0022] Reference numerals:

[0023] 1 housing; 101 first spiral groove; 102 light source; 103 plane mirror;

[0024] 2 zoom device; 201 convex lens body; 202 fixing frame;

[0025] 3 control member; 301 second straight groove; 302 mounting groove;

[0026] 4 connection structure; 401 first connection member; 402 second connection member;

[0027] 5 head circle; 501 bevel;

[0028] 6. Waterproof ring;

[0029] 7 lamp tubes. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the present invention and to more clearly define the scope of protection claimed by the present invention, the present invention is described in detail below with respect to certain specific embodiments of the present invention. It should be noted that the following are only certain specific implementation methods of the present invention, which are only part of the embodiments of the present invention, and the specific and direct description of the relevant structures is only for the convenience of understanding the present invention, and the specific features do not naturally and directly limit the scope of implementation of the present invention.

[0031] Referring to the accompanying drawings, the utility model adopts the following technical solution, a magnetic zoom device, comprising:

[0032] A housing 1, wherein the housing 1 has a built-in moving cavity;

[0033] A zoom device 2 is arranged in the moving cavity and can move along the axial direction of the moving cavity;

[0034] A control member 3 is sleeved outside the housing 1. The control member 3 is connected to the zoom device 2 via a connecting structure 4. The control member 3 and the housing 1 rotate relative to each other and drive the zoom device 2 to move axially in the moving cavity via the connecting structure 4, so as to control the distance between the zoom device 2 and the light source 102 and realize zooming.

[0035] The connecting structure 4 includes at least one first connecting member 401, at least one second connecting member 402, and at least one first spiral groove 101 opened on the shell 1, the first connecting member 401 is located in the first spiral groove 101, the second connecting member 402 is arranged on the zoom device 2, and the first connecting member 401 and the second connecting member 402 are arranged relative to each other so that a mutual traction force is formed therebetween, so that the second connecting member 402 can be driven to move when the first connecting member 401 moves.

[0036] At least one of the first connecting member 401 and the second connecting member 402 is a magnetic body, and the other is a material that cooperates with the magnetic body to generate an interaction force. If the first connecting member 401 is a magnetic body and the second connecting member 402 is a material that cooperates with the magnetic body to generate an interaction force, so that the first connecting member 401 and the second connecting member 402 are magnetically connected to each other, such as iron, then the zoom device 2 is made of other materials that do not generate an interaction force with the magnetic material, such as plastic.

[0037] The inner wall of the control member 3 is provided with a second straight groove 301 which cooperates with the first spiral groove 101. The first connecting member 401 is at least partially located in the first spiral groove 101 and at least partially located in the second straight groove 301, so that when the control member 3 rotates, the first connecting member 401 moves in the first spiral groove 101.

[0038] Through the above technical solution, a magnetic interaction force is generated between the first connecting member 401 and the second connecting member 402, so that when the first connecting member 401 rotates and moves, the second connecting member 402 is driven to move. Since the first connecting member 401 moves in the spiral groove, the axial movement of the second connecting member 402 can be achieved to adjust the distance between the zoom device 2 and the lighting device to achieve zooming.

[0039] Another form of interaction force between the first connecting member 401 and the second connecting member 402 is: the first spiral groove 101 is a through groove, and the first connecting member 401 and the second connecting member 402 are fixedly connected by a connecting column, that is, the connecting column passes through the through groove to connect the first connecting member 401 and the second connecting member 402.

[0040] Through the above technical solution, the first connecting member 401 and the second connecting member 402 are directly connected through the connecting column, which directly drives the movement of the zoom device 2, but the sealing performance of this method is not as good as that of the magnetic connection method.

[0041] The zoom device 2 includes a convex lens body 201 and a fixing frame 202, the second connecting member 402 is mounted on the outer wall of the fixing frame 202, and the convex lens is fixed on the side of the fixing frame 202. The outer wall of the fixing frame 202 is provided with a mounting groove 302, and the second connecting member 402 is mounted in the mounting groove 302.

[0042] The connection structure 4 may have only one spiral groove, or two spiral grooves, or three equally divided spiral grooves as provided in the present embodiment.

[0043] A lighting device includes the above-mentioned magnetic zoom device, wherein the housing 1 has a built-in light source 102, and a plane mirror 103 is installed on the housing 1 on one side of the movable cavity, so that the light from the light source 102 passes through the zoom device 2 and then is emitted from the plane mirror 103. It also includes a head ring 5, which is threadedly connected to the outer wall of the end of the housing 1, and a movable concave ring is provided on the inner wall of the head ring 5 to cooperate with the axial movement of the control member 3.

[0044] A waterproof ring 6 is fixed between the plane mirror 103 and the housing.

[0045] Through the above technical solution, due to the setting of the plane mirror 103, the water will not directly contact the convex lens, so the light can still be focused.

[0046] It also includes a lamp tube 7, which is threaded or fixedly connected to the housing 1. The lamp tube 7 has a built-in circuit board. The circuit board has built-in control circuits, power supplies, etc., which control the power supply of the light source 102. The light source 102 can be an LED lamp.

[0047] The light source 102 can be fixed in the housing 1, or in the lamp tube 7, or on a circuit board.

[0048] In this embodiment, three spiral grooves are milled on the outer wall of the housing 1, which are non-penetrating grooves for the first connecting member 401, that is, the first magnet slides in the spiral grooves. Three matching straight grooves are milled on the control member 3, which are non-penetrating grooves, and the first magnet moves in the straight grooves at the same time, so when the control member 3 is rotated, the first magnet will move in the spiral groove.

[0049] Three matching second strong magnets are fixedly mounted on the outer wall of the fixing frame 202 .

[0050] When the control part 3 is turned, the first magnet will move along the spiral groove. Although the first magnet and the second strong magnet are not in direct contact with each other, due to the magnetic force, the first magnet slides and the second strong magnet moves accordingly, so that the convex lens moves axially and the focal length of the light changes, thereby realizing the zoom function of the convex lens in a non-contact state.

[0051] A plane mirror 103, such as a flat glass sheet, is installed above the shell 1. A waterproof ring 6 is fixed between the plane mirror 103 and the shell 1, and then fixed to the shell 1 with a head ring 5, so that the active cavity is completely waterproof, water will not directly contact the convex lens, and the light can achieve zooming.

[0052] The inner wall of the head ring 5 is provided with an inclined surface 501 so as not to block the divergent light.

[0053] Compared with the prior art, the utility model has the advantages that the utility model has a simple structure and can realize zooming work underwater.

[0054] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A magnetic zoom device, characterized in that: include: A housing (1), wherein the housing (1) has a built-in moving cavity; A zoom device (2) is arranged in the movable cavity and can move along the axial direction of the movable cavity; A control member (3) is sleeved outside the shell (1); the control member (3) is connected to the zoom device (2) via a connecting structure (4); the control member (3) and the shell (1) rotate relative to each other and drive the zoom device (2) to move axially in the movable cavity via the connecting structure (4) to control the distance between the zoom device (2) and the light source (102) to achieve zooming.

2. The magnetic zoom device according to claim 1, characterized in that: The connection structure (4) comprises at least one first connection member (401), at least one second connection member (402), and at least one first spiral groove (101) provided on the shell (1); the first connection member (401) is located in the first spiral groove (101); the second connection member (402) is arranged on the zoom device (2); the first connection member (401) and the second connection member (402) are arranged relative to each other so that a mutual traction force is formed between the two so that the second connection member (402) can be driven to move when the first connection member (401) moves.

3. The magnetic zoom device according to claim 2, characterized in that: At least one of the first connecting member (401) and the second connecting member (402) is a magnetic body, and the other is a material that cooperates with the magnetic body to generate an interaction force, so that the first connecting member (401) and the second connecting member (402) are magnetically connected to each other.

4. The magnetic zoom device according to claim 3, characterized in that: A second straight groove (301) cooperating with the first spiral groove (101) is provided on the inner wall of the control member (3); the first connecting member (401) is at least partially located in the first spiral groove (101) and at least partially located in the second straight groove (301), so that when the control member (3) rotates, the first connecting member (401) moves in the first spiral groove (101).

5. The magnetic zoom device according to claim 2, characterized in that: The first spiral groove (101) is a through groove, and the first connecting member (401) and the second connecting member (402) are fixedly connected via a connecting column.

6. The magnetic zoom device according to claim 2, characterized in that: The zoom device (2) comprises a convex lens body (201) and a fixing frame (202); the second connecting member (402) is mounted on the outer wall of the fixing frame (202); and the convex lens is fixed on the side of the fixing frame (202).

7. A lighting device, characterized in that: It comprises the magnetic zoom device as described in any one of claims 1 to 6 above, wherein the housing (1) has a built-in light source (102), and a plane mirror (103) is installed on the housing (1) on one side of the movable cavity, so that light emitted from the light source (102) passes through the zoom device (2) and is emitted from the plane mirror (103).

8. The lighting device according to claim 7, characterized in that: It also includes a head ring (5), which is threadedly connected to the outer wall of the end of the shell (1), and a movable concave ring is provided on the inner wall of the head ring (5) to cooperate with the axial movement of the control component (3) to limit the position.

9. The lighting device according to claim 7, characterized in that: The plane mirror (103) is connected to the housing (1) via a waterproof ring (6).