Electrically-controlled mechanical optical shutter

Abstract

The utility model relates to an electric control mechanical optical shutter. The electric control mechanical optical shutter comprises a shell, a rotating rod, an electromagnet, a magnet and a light blocking piece, a light inlet hole is formed in a front panel of the shell, a light outlet hole is formed in a rear panel of the shell, and the light inlet hole and the light outlet hole are opposite in position; the rotating rod is rotatably mounted in the shell; the electromagnet is installed in the shell and located on one side of the rotating rod. The magnet is fixedly connected to the rotating rod and right faces the electromagnet, so that the electromagnet can attract the magnet and drive the rotating rod to rotate when working. The light blocking piece is fixedly connected to the free end of the rotating rod and used for blocking light entering from the light inlet hole. The electrically-controlled mechanical optical shutter is simple in structure and sensitive in response, the manufacturing cost of the mechanical optical shutter can be effectively reduced, and the service life of the mechanical optical shutter can be prolonged.

Description

Technical Field

[0001] The utility model relates to the field of optical instruments, in particular to an electrically controlled mechanical optical shutter. Background Art

[0002] A mechanical shutter is a component used to block laser light paths by reflecting or absorbing the laser. Mechanical shutters offer high stability and durability, low cost, wide applicability, and high reliability. They are widely used in optical measurement, optical instrumentation, and other fields to control the intensity, direction, or transmission of lasers.

[0003] Traditional mechanical light gates often use cylinders to drive the mechanical light gate to perform telescopic movement. When the laser is working, the cylinder drives the mechanical light gate to retract to open the light path, and vice versa, the light gate is extended to block the light path. However, the cylinder and track in this structure are prone to problems such as insufficient air pressure, aging and loosening during continuous opening and closing, resulting in reduced accuracy and poor durability of the device. Therefore, the existing technology has gradually adopted electronic control to control the closing of the light gate, and the driving force is mainly provided by cylinders, linear electromagnets, relays, solenoid valves, stepper motors, etc. However, there are some problems with mechanical light gates of this design, mainly because the structural design is relatively complex, the response speed is slow, and it is also easy to damage due to the complex structure. Therefore, there is a need to further improve the existing mechanical light gate. Utility Model Content

[0004] Based on this, the purpose of the present invention is to provide an electrically controlled mechanical shutter.

[0005] An electrically controlled mechanical light shutter comprises a shell, a rotating rod, an electromagnet, a magnet and a light blocking member, wherein the front panel of the shell is provided with a light inlet hole, the rear panel is provided with a light outlet hole, and the light inlet hole and the light outlet hole are positioned opposite to each other; the rotating rod is rotatably mounted inside the shell; the electromagnet is mounted inside the shell and is located on one side of the rotating rod; the magnet is fixed to the rotating rod and is facing the electromagnet, so that the electromagnet can attract the magnet and drive the rotating rod to rotate when it is working; the light blocking member is fixed to the free end of the rotating rod and is used to block light incident from the light inlet hole.

[0006] The electrically controlled mechanical shutter of this utility model uses an electromagnet to attract a magnet, driving a rotating rod to rotate. This control controls the light blocking member to cover or deviate from the light inlet, thereby controlling the light path in the shutter. Compared to existing technologies, the mechanical shutter of this application has a simple structure and a sensitive response, which can effectively reduce the manufacturing cost of the mechanical shutter and increase its service life.

[0007] Furthermore, the hinged end of the rotating rod and the center of the light inlet are on the same vertical line, so that the free end of the rotating rod is located at the light inlet when it droops naturally.

[0008] Furthermore, the device further includes a limiting post, which is fixed to the interior of the housing and is located on the other side of the rotating rod relative to the electromagnet. When the rotating rod abuts the limiting post, the light shielding piece precisely covers the light inlet. The limiting post limits the rotation of the rotating rod. When the rotating rod naturally droops after the electromagnet is de-energized, it abuts the limiting post, reducing the rotating rod's swing due to inertia and ensuring that the light shielding piece accurately covers the light inlet.

[0009] Furthermore, the rotating rod is bent so that the hinged end and the free end of the rotating rod form an obtuse angle. By bending the rotating rod, the rotating rod drives the light blocking member to rotate at a larger angle when attracted by the electromagnet, thereby avoiding blocking the light inlet.

[0010] Furthermore, it also includes a switch, which is electrically connected to the electromagnet and is used to control the working state of the electromagnet.

[0011] Furthermore, the switch is a foot switch.

[0012] Furthermore, a bearing is included, and the rotating rod is rotatably installed inside the shell through the bearing.

[0013] Furthermore, the surface of the light blocking plate is passivated.

[0014] Furthermore, the rear panel of the shell is detachably mounted on the shell.

[0015] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a disassembly diagram of the electric-controlled mechanical optical shutter of the utility model;

[0017] Figure 2 This is a disassembled front view of the electric-controlled mechanical shutter of the utility model.

[0018] In the figure, 10-housing, 12-light inlet, 13-rear panel, 14-light outlet, 15-base, 16-wire hole, 20-rotating rod, 21-bearing, 30-electromagnet, 40-magnet, 50-light blocking member, 60-limiting column. DETAILED DESCRIPTION

[0019] An electrically controlled mechanical shutter comprises a housing 10, a rotating rod 20, an electromagnet 30, a magnet 40, and a light-blocking member 50. The rotating rod 20 is rotatably mounted within the housing 10, and the electromagnet 30 is also mounted within the housing 10. The magnet 40 is fixed to the rotating rod 20, and the light-blocking member 50 is fixed to the free end of the rotating rod 20. When the electromagnet 30 is energized, it attracts the magnet 40 and drives the rotating rod 20 to rotate, thereby controlling the light-blocking member 50 to block the laser light, thereby opening and closing the laser light path.

[0020] The front panel of the housing 10 defines a light inlet 12, and the rear panel 13 defines a light outlet 14, which is opposite the light inlet 12. Light enters the housing 10 through the light inlet 12 and exits through the light outlet 14. In some embodiments, the rear panel 13 of the housing 10 is removably mounted on the housing 10 to facilitate later replacement and maintenance of components within the shutter. Preferably, the housing 10 also includes a base 15, which is mounted on the bottom of the housing 10 to support and secure the housing 10.

[0021] The rotating rod 20 is rotatably mounted within the housing 10, and the hinge point of the rotating rod 20 is coaxial with the center of the light inlet 12, so that when the rotating rod 20 is naturally drooping, the free end is located at the light inlet 12. Preferably, the rotating rod 20 is rotatably mounted within the housing 10 via a bearing 21, which reduces the rotational resistance of the rotating rod 20 and improves the smoothness of the rotation of the rotating rod 20.

[0022] The electromagnet 30 is fixedly mounted within the housing 10 and is located on one side of the rotating rod 20. In conjunction with this, the housing 10 has a wire hole 16 for routing the wires of the electromagnet 30 out of the housing 10. Furthermore, the wire hole 16 should be as small as possible to prevent external light from entering the housing 10.

[0023] The magnet 40 is fixed on the rotating rod 20 and is opposite to the electromagnet 30. When the electromagnet 30 is powered on, it generates a magnetic force on the magnet 40 to attract it closer, thereby driving the rotating rod 20 to rotate. In conjunction with it, the light blocking member 50 is fixed to the free end of the rotating rod 20. When the electromagnet 30 is not powered on, the rotating rod 20 naturally droops under the action of gravity, so that the light blocking member 50 is exactly located at the light inlet 12, blocking external light from entering the light gate through the light inlet 12; when the electromagnet 30 is powered on, the rotating rod 20 rotates under the magnetic attraction, and drives the light blocking member 50 to deviate from the light inlet 12, and the light path is connected, so that the laser can pass through the light gate from the light inlet 12 and the light outlet 14. Correspondingly, the shape and size of the light blocking member 50 are not smaller than the light inlet 12, so that it can completely cover the light inlet and prevent light from entering. Preferably, the light blocking member 50 is passivated to improve its durability.

[0024] As an example, a switch is further included to cooperate with the electromagnet 30, and the switch is used to control the power-on state of the electromagnet 30. More preferably, the switch is a foot-operated switch for easy operation.

[0025] In some embodiments, the rotating rod 20 is bent so that the hinged end and the free end form an obtuse angle. When in a naturally drooping state, the light blocking member 50 can still completely cover the light inlet 12, blocking light from entering. When the electromagnet 30 is energized, the rotating rod 20 is attracted and rotated. Due to the bent configuration of the rotating rod 20, the light blocking member 50 at the free end can rotate a greater angle, effectively preventing incomplete rotation and partial obstruction of the light inlet.

[0026] In other embodiments, the optical shutter further includes a limiting post 60. The limiting post 60 is fixedly attached to the housing 10 and disposed on the other side of the rotating rod 20 opposite the electromagnet 30. When the rotating rod 20 abuts the limiting post 60, the light blocking member 50 is precisely positioned at the light inlet 12. The limiting post 60 is used to limit the rotation of the rotating rod 20 during its natural drooping after the electromagnet 30 is de-energized, preventing the rotating rod 20 from swinging back and forth due to inertia while drooping, thereby facilitating the rapid resetting of the rotating rod 20.

[0027] When in use, when the electromagnet is powered off, the rotating rod naturally droops under the action of gravity, causing the light blocking member to cover the light inlet and block the laser from passing through; when the electromagnet is powered on, the magnet is attracted by the electromagnet and drives the rotating rod to rotate, causing the light blocking member to deviate from the light inlet, allowing the laser to pass through the light inlet and light outlet, and the light path is open.

[0028] It should be understood that the terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms of "a", "said" and "the" used in the embodiments of the present application and the claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the orientation or positional relationship indicated by the terms "above", "below" and the like is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or suggesting that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In the description of the present application, for those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0029] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous 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. An electrically controlled mechanical shutter, characterized in that: It includes a shell, a rotating rod, an electromagnet, a magnet and a light blocking member, the front panel of the shell is provided with a light inlet hole, the rear panel is provided with a light outlet hole, and the light inlet hole and the light outlet hole are positioned opposite to each other; the rotating rod is rotatably installed inside the shell; the electromagnet is installed inside the shell and is located on one side of the rotating rod; the magnet is fixed to the rotating rod and is facing the electromagnet, so that the electromagnet can attract the magnet and drive the rotating rod to rotate when it is working; the light blocking member is fixed to the free end of the rotating rod and is used to block the light incident from the light inlet hole.

2. The electrically controlled mechanical shutter according to claim 1, wherein: The hinged end of the rotating rod and the center of the light inlet are on the same vertical line, so that the free end of the rotating rod is located at the light inlet when it droops naturally.

3. The electrically controlled mechanical shutter according to claim 1, wherein: It also includes a limiting column, which is fixed inside the shell and located on the other side of the rotating rod relative to the electromagnet, so that when the rotating rod abuts against the limiting column, the light blocking sheet just covers the light inlet.

4. The electrically controlled mechanical shutter according to claim 1, wherein: The rotating rod is bent so that the hinge end and the free end of the rotating rod form an obtuse angle.

5. The electrically controlled mechanical shutter according to claim 1, wherein: It also includes a switch, which is electrically connected to the electromagnet and is used to control the working state of the electromagnet.

6. The electrically controlled mechanical shutter according to claim 5, wherein: The switch is a foot switch.

7. The electrically controlled mechanical shutter according to claim 1, wherein: A bearing is also included, and the rotating rod is rotatably installed inside the housing through the bearing.

8. The electrically controlled mechanical shutter according to claim 1, wherein: The surface of the light blocking member is passivated.

9. The electrically controlled mechanical shutter according to claim 1, wherein: The rear panel of the housing is detachably mounted on the housing.

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