Eccentric anti-interference optical filter switcher

Abstract

The utility model relates to the technical field of cameras, and discloses an eccentric anti-interference optical filter switcher, which comprises a mounting shell, an optical filtering assembly, a guide piece arranged in parallel with the optical filtering assembly side by side, and a motor for driving the optical filtering assembly to reciprocate along the guide piece, a mounting groove for accommodating the light filtering assembly is formed in the mounting shell, and a light hole for light to penetrate through the light filtering assembly is formed in the bottom surface of the mounting groove; a spiral spring is coaxially fixed on a rotating shaft of the motor; the light filtering assembly comprises a light filter and a light filter mounting frame, and an extension part is arranged at one end, deviating from the guide piece, of the light filter mounting frame; the extension part is connected with the rotating shaft through a sliding block; a clamping part is arranged at the lower end of the sliding block, a guide hole matched with the rotating shaft is axially formed in the clamping part in a penetrating mode, and the two axial end faces of the clamping part abut against the spiral spring; the light filtering assembly is simple in structure, the sliding block is tightly attached to the spiral spring and the rotating shaft, the light filtering assembly can be prevented from shaking greatly in the axial direction, and the stability of the light filtering assembly is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cameras, in particular to an eccentric anti-interference filter switcher. Background Art

[0002] IR-CUT dual filters refer to a set of filters built into the camera lens group. When the infrared sensor point outside the lens detects changes in light intensity, the built-in IR-CUT automatic switching filter can automatically switch according to the intensity of the external light to achieve the best image effect. In daytime or night, the dual filters can automatically switch filters, so whether in daytime or night, they can resist light interference and obtain the best imaging effect.

[0003] In the current existing technology, two groups of filters are arranged together, and the two groups of filters are driven to move by a driving mechanism such as a single motor eccentric to the light hole, so that the corresponding group of filters is arranged corresponding to the light hole, thereby achieving the effect of switching the two groups of filters; such as the utility model CN220137532U previously applied for by the patent owner: a filter switcher, wherein a first limit member on a first filter holder will translate and reciprocate with the rotation of a spring on a motor, thereby driving the movement of a lens tray, but when the first limit member is clamped on a fixed shaft, there is a large gap between the first limit member and the spring in the axial direction, so that the first filter holder is prone to shaking when in motion or at rest, and the stability is not ideal. Utility Model Content

[0004] The purpose of the utility model is to provide an eccentric anti-interference filter switcher to address the deficiencies in the prior art, and the eccentric anti-interference filter switcher can well solve the above-mentioned problems.

[0005] In order to achieve the above requirements, the technical solution adopted by the utility model to solve its technical problems is:

[0006] The utility model provides an eccentric anti-interference filter switcher, comprising a mounting shell, a filter assembly, a guide piece arranged parallel to the filter assembly, and a motor driving the filter assembly to reciprocate along the guide piece; a mounting slot for accommodating the filter assembly is arranged in the mounting shell, and a light-transmitting hole for light to pass through the filter assembly is opened on the bottom surface of the mounting slot; a spiral spring is coaxially fixed on the rotating shaft of the motor; the filter assembly comprises a filter and a filter mounting frame, and an extension portion is arranged at one end of the filter mounting frame away from the guide piece; the extension portion is connected to the rotating shaft through a slider; a clamping portion is arranged at the lower end of the slider, and a guide hole adapted to the rotating shaft is axially penetrated on the clamping portion, and both end surfaces of the clamping portion in the axial direction are against the spiral spring.

[0007] The utility model discloses an eccentric anti-interference filter switcher, wherein the clamping parts are two, and the two clamping parts are respectively located on the left and right sides of the slider, and the two clamping parts form a unit; the unit has two and is respectively located at the two ends of the slider in the axial direction.

[0008] In the eccentric anti-interference filter switcher described in the utility model, a card slot is arranged at the upper end of the sliding block, and a card block adapted to the card slot is arranged at the lower end of the extending portion.

[0009] The eccentric anti-interference filter switcher described in the utility model, wherein the card slot is provided with a groove connected to the card slot; there are two grooves, and the two grooves are respectively located on two opposite side walls of the card slot.

[0010] The eccentric anti-interference filter switcher described in the utility model, wherein the motor is located in the mounting groove; a positioning seat is provided on the bottom surface of the mounting groove corresponding to the motor, and a positioning groove is provided on the side wall of the mounting groove corresponding to the rotating shaft.

[0011] In the eccentric anti-interference filter switcher described in the utility model, a lens mounting seat is further provided on the mounting shell, and the optical path of the lens mounting seat overlaps with the light transmission hole.

[0012] The eccentric anti-interference filter switcher described in the utility model, wherein the filter mounting frame is provided with a lens groove for mounting the filter; the filter mounting frame is also provided with a notch connected to the lens groove, and at least two of the notches are connected on the two opposite side walls of the lens groove.

[0013] The utility model discloses an eccentric anti-interference filter switcher, wherein an arc-shaped portion is arranged on the filter mounting frame toward the guide member; there are two arc-shaped portions and they are respectively located on the upper and lower sides of the guide member, and the concave surfaces of the two arc-shaped portions are tightly pressed against the outer surface of the guide member; the two arc-shaped portions constitute a limiting unit, there are two limiting units and the two limiting units are arranged side by side along the length direction of the guide member.

[0014] The beneficial effects of the utility model are as follows: a slider is arranged on the rotating shaft of the motor, and the lower end of the slider cooperates with the coil spring; when the motor drives the coil spring to rotate, the clamping part of the slider is subjected to thrust and moves axially, thereby driving the filter assembly to move along the guide member to achieve the switching of the filter; the clamping part on the slider is against the coil spring at both ends in the axial direction, thereby ensuring the stable movement of the slider, and at the same time, the slider is fixedly connected to the extension part, thereby ensuring the stable movement of the filter assembly; the utility model has a simple structure, and the slider fits tightly with the coil spring and the rotating shaft, which can prevent the filter assembly from shaking significantly along the axial direction, thereby improving the stability of the filter assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:

[0016] Figure 1 It is a schematic diagram of the overall structure of the eccentric anti-interference filter switcher of the utility model.

[0017] Figure 2 It is a cross-sectional schematic diagram of the eccentric anti-interference filter switcher of the utility model.

[0018] Figure 3 It is an axial cross-sectional view of the rotating shaft of the eccentric anti-interference filter switcher of the utility model.

[0019] In the figure: 1, mounting shell; 2, guide member; 3, motor; 4, mounting slot; 5, light-transmitting hole; 6, rotating shaft; 7, spiral spring; 8, filter; 9, filter mounting bracket; 91, extension portion; 91a, clamping block; 92, lens slot; 92a, notch; 93, arc portion; 10, slider; 101, clamping portion; 101a, guide hole; 102, clamping slot; 103, groove; 11, positioning seat; 12, positioning slot; 13, lens mounting seat. DETAILED DESCRIPTION

[0020] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the present invention and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] "Multiple" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0023] Moreover, the terms "up, down, left, right, upper end, lower end, longitudinal" and the like indicating directions are all based on the posture and position of the device or equipment described in this solution during normal use.

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the following will be described clearly and completely in combination with the technical solution in the embodiments of the utility model. Obviously, the described embodiments are partial embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0025] The eccentric anti-interference filter switch of the preferred embodiment of the utility model is as follows Figure 1-3 As shown, it includes a mounting shell 1, a filter assembly, a guide member 2 arranged parallel to the filter assembly, and a motor 3 driving the filter assembly to reciprocate along the guide member 2; a mounting groove 4 for accommodating the filter assembly is arranged in the mounting shell 1, and a light-transmitting hole 5 for allowing light to pass through the filter assembly is opened on the bottom surface of the mounting groove 4; a spiral spring 7 is coaxially fixed on the rotating shaft 6 of the motor 3; the filter assembly includes a filter 8 and a filter mounting frame 9, and an extension portion 91 is arranged at one end of the filter mounting frame 9 away from the guide member 2; the extension portion 91 is connected to the rotating shaft 6 through a slider 10; a clamping portion 101 is arranged at the lower end of the slider 10, and a guide hole 101a adapted to the rotating shaft 6 is axially penetrated on the clamping portion 101, and both end surfaces of the clamping portion 101 in the axial direction are against the spiral spring 7.

[0026] In this embodiment, the motor 3 is a micro motor 3; the mounting shell 1 is made of metal material to achieve resistance to signal interference; the eccentric setting of the motor 3 relative to the light-transmitting hole 5 makes the motor 3 universal ceramic package, PLCC package and CSP package chip, and can achieve image imaging with a short back focus of the lens after the lens is installed; the clamping part 101 extends from the top of the rotating shaft 6 to the bottom of the rotating shaft 6, semi-enclosing the rotating shaft 6, and the guide hole 101a is located in the middle of the clamping part 101; when the rotating shaft 6 rotates, it drives the coil spring 7 to rotate, and then the coil spring 7 applies a pushing force to the clamping part 101. Since the two end surfaces of the clamping part 101 in the axial direction are both against the coil spring 7, when the coil spring 7 rotates, the clamping part 101 is displaced close to the coil spring 7, which greatly reduces the shaking during the movement.

[0027] The utility model provides a slider 10 on the rotating shaft 6 of the motor 3, and the lower end of the slider 10 cooperates with the coil spring 7; when the motor 3 drives the coil spring 7 to rotate, the clamping portion 101 of the slider 10 is pushed and moves axially, thereby driving the filter assembly to move along the guide member 2 to achieve the switching of the filter 8; the clamping portion 101 on the slider 10 is against the coil spring 7 at both ends in the axial direction, ensuring the stable movement of the slider 10, and at the same time, the slider 10 is fixedly connected to the extension portion 91, ensuring the stable movement of the filter assembly; the utility model has a simple structure, and the slider 10 is tightly fitted with the coil spring 7 and the rotating shaft 6, which can prevent the filter assembly from shaking significantly along the axial direction and improve the stability of the filter assembly.

[0028] Preferably, there are two clamping parts 101, which are respectively located on the left and right sides of the slider 10, and the two clamping parts 101 form a unit; there are two units and they are respectively located at the two ends of the slider 10 in the axial direction; two units are provided for clamping the rotating shaft 6, thereby improving the stability of the movement of the slider 10.

[0029] Preferably, a slot 102 is provided at the upper end of the slider 10, and a block 91a adapted to the slot 102 is provided at the lower end of the extension portion 91; the block 91a of the extension portion 91 extends into the slot 102 from top to bottom, and is fixedly connected to the slider 10 by interference fit, with a simple structure and easy assembly.

[0030] Preferably, the card slot 102 is provided with a groove 103 connected to the card slot 102; there are two grooves 103, and the two grooves 103 are respectively located on two opposite side walls of the card slot 102; in order to make the connection between the extension portion 91 and the slider 10 more secure, a proper amount of glue can be dripped into the card slot 102, and the setting of the groove 103 can accommodate excess glue that overflows, thereby preventing the glue from overflowing and affecting the movement of the slider 10 on the rotating shaft 6.

[0031] Preferably, the motor 3 is located in the mounting groove 4; a positioning seat 11 is provided on the bottom surface of the mounting groove 4 corresponding to the motor 3, and a positioning groove 12 is provided on the side wall of the mounting groove 4 corresponding to the rotating shaft 6; the setting of the positioning seat 11 and the positioning groove 12 can improve the installation efficiency and accuracy of the motor 3, and at the same time prevent the rotating shaft 6 from shaking left and right during the switching of the filter 8.

[0032] Preferably, a lens mounting seat 13 is also provided on the mounting shell 1, and the optical path of the lens mounting seat 13 overlaps with the light transmission hole 5; the lens mounting seat 13 is directly opposite to the light transmission hole 5, the lens mounting seat 13 is hollow, and a thread is provided on the inner side wall of the lens mounting seat 13 for connecting the lens.

[0033] Preferably, the filter mounting frame 9 is provided with a lens groove 92 for mounting the filter 8; the filter mounting frame 9 is also provided with a notch 92a connected to the lens groove 92, and at least two notches 92a are connected on the two opposite side walls of the lens groove 92; in the present embodiment, two different filters 8 are mounted side by side in the lens groove 92, and the filter mounting frame 9 is displaced relative to the light transmission hole 5, so that different filters 8 correspond to the light transmission hole 5, thereby achieving the purpose of switching the filter 8; the notch 92a can be provided to facilitate dripping glue after the filter 8 is installed so that it enters the gap between the filter 8 and the bottom surface of the lens groove 92, thereby preventing the glue from overflowing and contaminating the filter 8 or entering the light transmission hole 5 and affecting the lens.

[0034] Preferably, an arc-shaped portion 93 is provided on the filter mounting frame 9 toward the guide member 2; there are two arc-shaped portions 93 and they are respectively located on the upper and lower sides of the guide member 2, and the concave surfaces of the two arc-shaped portions 93 are tightly pressed against the outer surface of the guide member 2; the two arc-shaped portions 93 constitute a limiting unit, and there are two limiting units and the two limiting units are arranged side by side along the length direction of the guide member 2; in this embodiment, the guide member 2 is a columnar body, and the two arc-shaped portions 93 are clamped on the columnar body up and down. The setting of the two limiting units can prevent the filter mounting frame 9 from falling off the guide member 2 or shaking up and down, and can allow the filter mounting frame 9 to slide stably along the columnar body; a gap is left between the two arc-shaped portions 93 for the guide member 2 to be assembled, and they are not arranged side by side vertically.

[0035] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. An eccentric anti-interference filter switcher, characterized in that: The invention comprises a mounting shell, a filter assembly, a guide member arranged parallel to and side by side with the filter assembly, and a motor driving the filter assembly to reciprocate along the guide member; a mounting groove for accommodating the filter assembly is arranged in the mounting shell, and a light-transmitting hole for light to pass through the filter assembly is arranged on the bottom surface of the mounting groove; a spiral spring is coaxially fixed on the rotating shaft of the motor; the filter assembly comprises a filter and a filter mounting frame, and an extension portion is arranged at one end of the filter mounting frame away from the guide member; the extension portion is connected to the rotating shaft through a slider; a clamping portion is arranged at the lower end of the slider, and a guide hole adapted to the rotating shaft is axially penetrated on the clamping portion, and both end surfaces of the clamping portion in the axial direction abut against the spiral spring.

2. The eccentric anti-interference filter switcher according to claim 1, characterized in that: There are two clamping parts, which are respectively located at the left and right sides of the slider, and the two clamping parts form a unit; there are two units, which are respectively located at the two ends of the slider in the axial direction.

3. The eccentric anti-interference filter switcher according to claim 2, characterized in that: The upper end of the sliding block is provided with a card slot, and the lower end of the extending portion is provided with a card block adapted to the card slot.

4. The eccentric anti-interference filter switcher according to claim 3, characterized in that: The card slot is provided with a groove connected with the card slot; there are two grooves, and the two grooves are respectively located on two opposite side walls of the card slot.

5. The eccentric anti-interference filter switcher according to claim 1, characterized in that: The motor is located in the installation groove; a positioning seat is arranged on the bottom surface of the installation groove corresponding to the motor, and a positioning groove is arranged on the side wall of the installation groove corresponding to the rotating shaft.

6. The eccentric anti-interference filter switcher according to claim 1, characterized in that: A lens mounting seat is also provided on the mounting shell, and the optical path of the lens mounting seat overlaps with the light transmission hole.

7. The eccentric anti-interference filter switcher according to claim 1, characterized in that: The filter mounting frame is provided with a lens groove for mounting the filter; the filter mounting frame is also provided with a notch connected to the lens groove, and at least two notches are connected to each other on two opposite side walls of the lens groove.

8. The eccentric anti-interference filter switcher according to claim 1, characterized in that: An arc-shaped portion is arranged on the filter mounting frame toward the guide member; there are two arc-shaped portions and they are respectively located at the upper and lower sides of the guide member, and the concave surfaces of the two arc-shaped portions are tightly pressed against the outer surface of the guide member; the two arc-shaped portions constitute a limiting unit, there are two limiting units and the two limiting units are arranged side by side along the length direction of the guide member.

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