A dual-flip filter switching mechanism and a telescopic sight incorporating the mechanism

Abstract

The present invention relates to the technical field of aiming scope filter switching, and particularly relates to a double-flip filter switching mechanism and an aiming scope including this mechanism. It includes a main housing of the aiming scope, and further includes: filters, a filter frame, a rotating shaft, a swing rod, a connecting rod, a worm gear, and a driving module; two of the rotating shafts are vertically rotatably installed on the main housing, the filter frame is sleeved on the rotating shaft, the filter is glued on the filter frame, the ends of the upper and lower rotating shafts both extend to the outside of the main housing, and one end of the upper and lower rotating shafts is locked with the swing rod, the connecting rod is hinged between the upper and lower swing rods, the other end of the upper rotating shaft is sleeved with the worm gear, the driving module is installed outside the main housing, and the driving module drives the worm gear to rotate. The present invention has the advantages of fast switching, good self-locking performance, and linkage of double filters.

Description

Technical Field

[0001] The present invention relates to the technical field of aiming scope filter switching, and particularly relates to a double-flipping filter switching mechanism and an aiming scope including the mechanism. Background Art

[0002] A filter is an optical device used to select the required radiation band. To meet the detection requirements of an aiming scope under complex conditions, a filter switching mechanism is often added to the aiming scope system.

[0003] For traditional filter switching mechanisms, one is a filter wheel structure. Usually, various filters are installed around a disc-shaped filter wheel, and a driving mechanism is installed at the filter wheel base. The filter wheel is driven to rotate around the axis by the driving mechanism to realize the switching of various filters. The disadvantage is that the size structure is too large and it is applicable to various instruments and equipment. The other is a lateral displacement structure. In a common design, two filters are placed side by side respectively. When a certain filter needs to be used, it is moved into the optical path for filtering. This device requires at least twice the lateral dimension space of the filter to achieve the switching function. The larger the filter, the more space it occupies.

[0004] During the use of the aiming scope in the example of the present invention, according to the actual situation, double filters need to be switched back and forth, and there is always one filter in the optical path. Since the filter size is relatively large and there are limitations on the size at the rear side of the aiming scope, if a traditional filter switching mechanism is adopted, its minimum lateral dimension is about twice the diameter size of the filter, which greatly exceeds the size requirements of the aiming scope. Summary of the Invention

[0005] The purpose of the present invention is to provide a double-flipping filter switching mechanism and an aiming scope including the mechanism. The present invention adopts a double-flipping filter switching structure, reduces the lateral dimension, realizes the synchronous switching of double filters through a connecting rod, and has the advantages of fast switching, good self-locking performance, and double-filter linkage.

[0006] To solve the above technical problems, the present invention provides a double-flipping filter switching mechanism, including a main housing of the aiming scope, and further including: filters, filter frames, rotating shafts, swing rods, connecting rods, worm gears, and a driving module; two of the rotating shafts are vertically rotatably installed on the main housing, the filter frames are sleeved on the rotating shafts, the filters are glued on the filter frames, the ends of the upper and lower rotating shafts both extend to the outside of the main housing, and one end of the upper and lower rotating shafts is locked with the swing rods, the connecting rod is hinged between the upper and lower swing rods, the other end of the upper rotating shaft is sleeved with the worm gear, and the driving module is installed outside the main housing, and the driving module drives the worm gear to rotate.

[0007] Preferably, a bearing is further provided, and the rotating shaft is rotatably connected to the main housing through the bearing.

[0008] Preferably, a locking nut is further provided, wherein the locking nut is threadedly locked on the end of the rotating shaft to stop and lock the rocker arm movably sleeved on the rotating shaft.

[0009] Preferably, a pin is further provided, and the connecting rod and the rocker arm are hinged by inserting the pin.

[0010] Preferably, the driving module comprises: a motor, a transmission reduction gear set and a worm; the motor drives the worm to rotate via the transmission reduction gear set, and power transmission is achieved through the meshing of the worm and the worm wheel.

[0011] Preferably, it also includes a screwed-in magnetic ring for magnetically adsorbing and limiting the filter frame.

[0012] Preferably, the filter frame is made of a steel material that can be attracted by a magnet.

[0013] Preferably, the two filters are vertically distributed at 90°.

[0014] Preferably, it also includes a contact switch arranged on the main housing, which is used to realize power off of the motor and self-locking of the worm gear by touching the contact switch through the filter frame when the two filters are switched.

[0015] The present invention also provides the following technical solution: a sight, comprising an optical system, a pressure ring, a CCD detection assembly and the filter switching mechanism as described above; the optical system and the CCD detection assembly are respectively installed on the optical paths at both ends of the main shell, and the optical system and the main shell are installed through the pressure ring; the optical system first converges light information from the target, then filters out the required band through the filter, and finally converges to the focal plane of the CCD detection assembly, and the CCD detection assembly converts the image of the target into an electrical signal.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1) With self-locking function and fast switching:

[0018] The switching mechanism of the present invention adopts a reduction gear plus worm gear drive mode, with a large reduction ratio, a fast motor speed, a large torque provided by the overall drive mechanism, and a fast response speed. The worm gear has a good self-locking function, so that the switching mechanism can effectively resist the impact and vibration on the mechanism.

[0019] 2) Double filter linkage, saving space:

[0020] The present invention adopts a double - flip structure, which hardly occupies any dimensional space horizontally. The two filters are linked by a connecting rod to avoid interference between the filters during switching, and it is applicable to optical systems with relatively large filter sizes.

[0021] 3) Convenient maintenance and good reliability:

[0022] In the present invention, the electronic devices used are only a motor and a contact switch, and both are outside the sighting scope, making maintenance and disassembly convenient. The switching mechanism is a mechanical structure with high reliability. Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the overall structure of the sighting scope provided by the present invention; where (a) is the rear view and (b) is the front view.

[0024] Figure 2 It is a schematic diagram of the structure of the optical system provided by the present invention.

[0025] Figure 3 It is a schematic diagram of the structure of the filter switching mechanism provided by the present invention.

[0026] Figure 4 It is a schematic diagram of the structure of the drive module provided by the present invention.

[0027] In the figures: 1 - main housing, 2 - optical system, 3 - retaining ring, 4 - CCD detection component, 5 - switching mechanism, 501 - filter, 502 - filter frame, 503 - rotating shaft, 504 - swing rod, 505 - connecting rod, 506 - worm gear, 507 - drive module, 508 - bearing, 509 - locking nut, 510 - pin, 511 - magnetic ring, 512 - contact switch. Detailed Embodiments

[0028] The following further elaborates on the present invention in detail with reference to the drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the drawings are all in a very simplified form and use non - precise scales, only for conveniently and clearly assisting in explaining the purpose of the embodiments of the present invention.

[0029] As Figures 1-4As shown in the figure, an embodiment of the present invention specifically provides a double - flip filter switching mechanism, including a main housing 1 of a telescopic sight, and further including: a filter 501, a filter frame 502, a rotating shaft 503, a swing rod 504, a connecting rod 505, a worm gear 506, and a driving module 507; two rotating shafts 503 are vertically rotatably installed on the main housing 1, a filter frame 502 is sleeved on the rotating shaft 503, a filter 501 is glued on the filter frame 502, the ends of the upper and lower rotating shafts 503 both extend to the outside of the main housing 1, and a swing rod 504 is locked at one end of the upper and lower rotating shafts 503, a connecting rod 505 is hinged between the upper and lower swing rods 504, a worm gear 506 is sleeved on the other end of the upper - side rotating shaft 503, a driving module 507 is installed outside the main housing 1, and the driving module 507 drives the worm gear 506 to rotate.

[0030] It further includes a provided bearing 508, and the rotating shaft 503 is rotatably connected to the main housing 1 through the bearing 508; the bearing 508 is installed on the main housing 1 to improve the dynamic stability and smoothness during the switching of the filter 501.

[0031] It further includes a provided locking nut 509, and the locking nut 509 is thread - locked at the end of the rotating shaft 503 to stop and lock the swing rod 504 movably sleeved on the rotating shaft 503; it is convenient for quick disassembly and assembly.

[0032] It further includes a provided pin 510, and the connecting rod 505 and the swing rod 504 are hinged by inserting the pin 510.

[0033] The driving module 507 includes: a motor, a transmission reduction gear set, and a worm; the motor drives the worm to rotate through the transmission reduction gear set, and power transmission is realized through the meshing of the worm and the worm gear 506.

[0034] It further includes a screwed - in magnetic ring 511. Here, the magnetic ring 511 is specifically arranged on the front optical path of the CCD detection component 4. Due to its annular setting, it can be used for magnetic adsorption and limiting of the filter frame 502 without affecting the optical path. The filter frame 502 is made of steel material that can be attracted by a magnet. At this time, the filter frame 502 in the optical path is attracted by the magnetic ring 511, eliminating the swing of the filter 501 when the whole system vibrates and making the overall optical system 2 more stable.

[0035] The two filters 501 are vertically distributed at 90°, which is convenient for the synchronous movement of the two filters 501 during switching without interference.

[0036] It further includes a contact switch 512 arranged on the main housing 1, which is used to realize that when the two filters 501 are switched, the filter frame 502 touches the contact switch 512 to cut off the power supply of the motor and lock the worm gear 506 and the worm self - lock.

[0037] The present invention also provides the following technical solution: A sighting scope, comprising an optical system 2, a retaining ring 3, a CCD detection assembly 4, and a filter switching mechanism 5 as described above; the optical system 2 and the CCD detection assembly 4 are respectively installed on the optical paths at both ends of the main housing 1, and the optical system 2 is installed with the main housing 1 through the retaining ring 3; the optical system 2 first converges the optical information from the target, then filters out the required wavelength band through the filter 501, and finally converges to the focal plane of the CCD detection assembly 4, and the CCD detection assembly 4 converts the image of the target into an electrical signal.

[0038] As Figures 2-4 shown, the optical system 2 first converges the optical information from the target, then filters out the required wavelength band through the filter 501, and finally converges to the focal plane of the CCD detection assembly 4, and the CCD detection assembly 4 converts the image of the target into an electrical signal. According to the actual situation, when it is necessary to switch the filter 501, the motor drives the worm to rotate through the reduction gear set, the worm drives the worm wheel 506 to rotate, and at this time the filter 501 starts to switch. When the required filter 501 reaches the optical path center, the connecting rod 505 drives another filter frame 502 back to the original position and touches the contact switch 512 installed on the main housing 1, the motor is powered off, and the worm wheel 506 and the worm are self-locked. At the same time, due to the existence of the connecting rod 505, not only do the two filters 501 move synchronously and do not interfere with each other during the switching process, but also the size of the entire filter switching mechanism 5 is reduced. During the switching process, the pressure angles of the connecting rod 505 and the swing rod 504 do not reach 180°, avoiding the occurrence of the dead point of the mechanism movement.

[0039] The above description is only a description of the preferred embodiments of the present invention, and does not limit the scope of the present invention in any way. Any changes and modifications made by those of ordinary skill in the field of the present invention based on the above disclosure are within the scope of protection of the claims.

Claims

1. A double - flip filter switching mechanism, including a main housing (1) of a telescopic sight, characterized in that, it further includes: a filter (501), a filter frame (502), a rotating shaft (503), a swing rod (504), a connecting rod (505), a worm gear (506) and a driving module (507); Two of the rotating shafts (503) are vertically rotatably installed on the main housing (1), the filter frame (502) is sleeved on the rotating shaft (503), the filter (501) is glued on the filter frame (502), the ends of the upper and lower rotating shafts (503) both extend to the outside of the main housing (1), and a swing rod (504) is locked at one end of the upper and lower rotating shafts (503), a connecting rod (505) is hinged between the upper and lower swing rods (504), a worm gear (506) is sleeved on the other end of the upper - side rotating shaft (503), the driving module (507) is installed outside the main housing (1), and the driving module (507) drives the worm gear (506) to rotate; The driving module (507) includes: a motor, a transmission and reduction gear set and a worm; The motor drives the worm to rotate through the transmission and reduction gear set, and power transmission is realized through the meshing of the worm and the worm gear (506); The two filters (501) are vertically distributed at 90°, and through the linkage of the connecting rod (505), synchronous switching of the double filters (501) is realized; It further includes a screwed - in magnetic ring (511) for magnetically adsorbing and limiting the filter frame (502), and the magnetic ring (511) is specifically arranged on the optical path in front of the CCD detection component (4); It further includes: The optical system (2) first converges the optical information from the target, then filters out the required wavelength band through the filter (501), and finally converges to the focal plane of the CCD detection component (4). The CCD detection component (4) converts the image of the target into an electrical signal; When the filter (501) needs to be switched, the motor drives the worm to rotate through the reduction gear set, the worm drives the worm gear (506) to rotate, at this time the filter (501) starts to switch. When the required filter (501) reaches the optical path center, the connecting rod (505) drives the other filter frame (502) back to the original position and touches the contact switch (512) installed on the main housing (1), the motor is powered off, the worm gear (506) and the worm are self - locked. At the same time, due to the existence of the connecting rod (505), not only do the two filters (501) move synchronously and do not interfere with each other during switching, but also the size of the entire filter switching mechanism (5) is reduced. During the switching process, the pressure angles of the connecting rod (505) and the swing rod (504) do not reach 180°, avoiding the occurrence of dead points in the mechanism movement.

2. A double - flip filter switching mechanism as described in claim 1, characterized in that, it further includes a provided bearing (508), and the rotating shaft (503) and the main housing (1) are rotationally connected through the bearing (508).

3. A double - flip filter switching mechanism as described in claim 1, characterized in that, It further includes a set locking nut (509) which is threadedly locked at the end of the rotating shaft (503) to stop and lock the swing rod (504) movably sleeved on the rotating shaft (503).

4. A double-flip filter switching mechanism according to claim 1, characterized in that, it further includes a set pin (510), and the connecting rod (505) and the swing rod (504) are hinged by inserting the pin (510).

5. A double-flip filter switching mechanism according to claim 1, characterized in that, the filter frame (502) is made of steel material that can be attracted by a magnet.

6. A double-flip filter switching mechanism according to claim 5, characterized in that, it further includes a contact switch (512) provided on the main housing (1). When the two filters (501) are switched, the filter frame (502) touches the contact switch (512) to cut off the power supply of the motor and lock the worm gear (506) and the worm self-locking.

7. A telescopic sight, characterized in that, it includes an optical system (2), a retaining ring (3), a CCD detection component (4) and a filter switching mechanism (5) according to any one of claims 1 to 6; the optical system (2) and the CCD detection component (4) are respectively installed on the optical paths at both ends of the main housing (1), and the optical system (2) is installed with the main housing (1) through the retaining ring (3); the optical system (2) first converges the optical information from the target, then filters out the required wavelength band through the filter (501), and finally converges to the focal plane of the CCD detection component (4), and the CCD detection component (4) converts the image of the target into an electrical signal.

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