A high-retention dual filter changer

Abstract

The application provides a high-retention dual-filter switch, which comprises a shell, a swing arm, a driving mechanism and a moving piece, the swing arm, the driving mechanism and the moving piece are arranged in the shell, a strip-shaped hole is arranged through the moving piece, the strip-shaped hole comprises a longitudinal guide hole arranged along the width direction of the moving piece and a transverse clamping hole arranged along the length direction of the moving piece and connected to one end of the longitudinal guide hole, and the end, where the longitudinal guide hole and the transverse clamping hole are connected, is provided with a horn guide hole in a horn mouth shape; the swing arm comprises an arm plate and a limiting column arranged at one end of the arm plate, the arm plate can swing under the driving of the driving mechanism, the limiting column is movably arranged in the strip-shaped hole, the situation that the moving piece is stuck is avoided, the retention after the moving piece is switched can be increased, the situation that the moving piece is falsely switched is avoided, the reliability of the dual-filter switch is improved, the movement of the limiting column during the switching process can be guided, and the switching fluency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dual filter switcher, in particular to a dual filter switcher with high holding force. BACKGROUND

[0002] The dual filter switcher mainly comprises a shell, a moving piece carrying an infrared cut-off filter and a full-spectrum filter, a driving mechanism and a swing arm. The swing arm swings through the driving mechanism, and the moving piece moves forward and backward through the swing arm, so as to switch the use of the infrared cut-off filter or the full-spectrum filter. The function is to correct the color cast problem in the daytime and improve the brightness at night.

[0003] Chinese Patent No. CN217543634U discloses a self-locking mechanism applied to an IR-CUT dual filter switcher and a shooting device. The self-locking mechanism is provided with a clamping gap on both sides of the strip-shaped hole of the moving piece, so that the strip-shaped hole has a self-locking function, and the dual filter switcher can be prevented from being falsely switched under the action of the filter gravity. Since the clamping gap is not arranged at the end of the strip-shaped hole, the limiting column can move to both sides of the clamping gap. During the movement of the moving piece driven by the driving mechanism, when the limiting column is subjected to a large driving force of the driving mechanism, the limiting column may re-exit the clamping gap after entering the clamping gap. In this case, the clamping gap loses the effect of increasing the holding force or locking, and the moving piece may be falsely switched, which causes the moving piece to be stuck and affects the normal operation of the switcher. SUMMARY

[0004] The present application provides a dual filter switcher with high holding force, which can improve the holding force after the moving piece is switched, avoid the false switching of the moving piece, and improve the reliability of the dual filter switcher.

[0005] To solve the above technical problems, the present application provides a dual filter switcher with high holding force, which comprises a shell, a swing arm, a driving mechanism and a moving piece. The swing arm, the driving mechanism and the moving piece are arranged in the shell. A strip-shaped hole is arranged through the moving piece. The strip-shaped hole comprises a longitudinal guide hole arranged along the width direction of the moving piece, a transverse clamping hole arranged along the length direction of the moving piece and connected to one end of the longitudinal guide hole, and a horn guide hole arranged in a bell mouth shape at the connection end of the longitudinal guide hole and the transverse clamping hole. The swing arm comprises an arm plate and a limiting column arranged at one end of the arm plate. The arm plate can swing under the driving of the driving mechanism, and the limiting column is movably arranged in the strip-shaped hole.

[0006] Preferably, the end face of the transverse clamping hole is parallel to the side wall of the longitudinal guide hole, and the side wall of the horn guide hole extends to the end face of the transverse clamping hole.

[0007] Preferably, the shell comprises a lower cover, the lower cover comprises a seat body, a plug plate extending from one side of the seat body, the bottom of the plug plate is provided with a movable slot, a moving piece is movably arranged on the movable slot, the bottom of the seat body is provided with a control chamber, the other end of the arm plate is rotatably connected to the control chamber, the driving mechanism comprises a U-shaped iron arranged in the control chamber, a coil sleeved on the U-shaped iron, and a magnet fixedly connected to the end of the arm plate away from the limiting column.

[0008] Preferably, a through hole is arranged in the center of the magnet, a sleeve part is arranged on the top of the end of the arm plate away from the limiting column and matched with the through hole, the through hole is sleeved on the sleeve part, and a rotating shaft matched with the inner ring of the sleeve part is arranged on the top of the control chamber and connected to the sleeve part.

[0009] Preferably, the shell further comprises a lens seat, the lens seat comprises a bottom plate, a lens connecting sleeve arranged on the top of the bottom plate, the bottom plate is provided with a plug slot matched with the plug plate, the side wall of the bottom plate is provided with a clamping slot communicated with the plug slot, and the side wall of the seat body is provided with a clamping buckle matched with the clamping slot and buckled on the clamping slot.

[0010] The beneficial effects of the present application are as follows: the present application provides a double filter switch with high holding force, a strip-shaped hole is arranged on the moving piece, the strip-shaped hole is composed of a longitudinal guide hole, a horn guide hole and a transverse clamping hole, when the moving piece needs to be moved and switched, the driving mechanism drives the swing arm to swing, the limiting column can be moved from one end of the transverse clamping hole to the other end of the transverse clamping hole along the side wall of the horn guide hole, the longitudinal guide hole and the other side wall of the horn guide hole, thereby driving the moving piece to move back and forth along the length direction of the moving piece, and the switching function of the moving piece is realized; the transverse clamping hole is arranged at one end of the longitudinal guide hole, so that the limiting column cannot continue to advance after entering the transverse clamping hole, and the situation that the moving piece is stuck is avoided; the horn guide hole is arranged at the connecting end of the longitudinal guide hole and the transverse clamping hole, so that the resistance of the limiting column moving in the transverse clamping hole is increased, the holding force after the moving piece is switched is increased, the self-locking effect is achieved, the situation that the moving piece is falsely switched is avoided, the reliability of the double filter switch is improved, the movement of the limiting column during switching can be guided, and the switching fluency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 An external structure schematic diagram of the present application is exemplified.

[0012] Figure 2 A top view of the moving piece of the present application is exemplified.

[0013] Figure 3 An exploded structure schematic diagram of the present application is exemplified.

[0014] Figure 4 A state structure schematic diagram of the present application switched to an infrared cut-off filter is exemplified.

[0015] Figure 5 The state structure schematic diagram of the full light spectrum filter switching of the application is illustrated.

[0016] Figure 6 The analysis schematic diagram of the self-locking force of the application is illustrated.

[0017] The figure number explanation: the shell 10, the lower cover 11, the seat body 110, the plugboard 111, the movable slot 112, the control chamber 113, the rotating shaft 114, the buckle 115, the lens seat 12, the bottom plate 120, the lens connecting sleeve 121, the plug slot 122, the clamping slot 123, the swing arm 20, the arm plate 21, the limiting column 22, the sleeve part 23, the moving piece 30, the strip hole 31, the longitudinal guide hole 32, the transverse clamping hole 33, the horn guide hole 34, the U-shaped iron 40, the coil 41, the magnet 42, the through hole 420. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present disclosure clearer, the technical scheme of the embodiments of the present disclosure will be described clearly and completely below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments.

[0019] Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present disclosure.

[0020] Reference Figures 1-6 .

[0021] The application provides a high-holding-force double-filter switcher, which comprises a shell 10, a swing arm 20, a driving mechanism and a moving piece 30. The swing arm 20, the driving mechanism and the moving piece 30 are arranged in the shell 10. The moving piece 30 is provided with a strip hole 31 penetrating therethrough. The strip hole 31 comprises a longitudinal guide hole 32 arranged along the width direction of the moving piece 30, and a transverse clamping hole 33 arranged along the length direction of the moving piece 30 and connected to one end of the longitudinal guide hole 32. The longitudinal guide hole 32 and the transverse clamping hole 33 are provided with a horn guide hole 34 in the shape of a horn mouth at the connecting end.

[0022] The working principle is that by setting the strip-shaped hole 31 on the moving piece 30, the strip-shaped hole 31 is composed of a longitudinal guide hole 32, a horn guide hole 34 and a transverse clamping hole 33, when the moving piece 30 needs to be moved and switched, the swing arm 20 is swung by the driving mechanism, the limiting column 22 can be moved from one end of the transverse clamping hole 33 to the other end of the transverse clamping hole 33 along the side wall of the horn guide hole 34, the longitudinal guide hole 32 and the other side wall of the horn guide hole 34 in sequence, so as to drive the moving piece 30 to move back and forth along the length direction of the moving piece 30, and the switching function of the moving piece 30 is realized; by setting the transverse clamping hole 33 at one end of the longitudinal guide hole 32, the limiting column 22 is prevented from continuing to advance after entering the transverse clamping hole 33, and the situation that the moving piece 30 is stuck is avoided; by setting the horn guide hole 34 at the connecting end of the longitudinal guide hole 32 and the transverse clamping hole 33, the resistance of the limiting column 22 moving in the transverse clamping hole 33 can be increased, the holding force after the moving piece 30 is switched can be increased, the situation that the moving piece 30 is falsely switched is avoided, the reliability of the double filter switching device is improved, and the movement of the limiting column 22 in the switching process can be guided, and the smoothness of the switching is improved.

[0023] Based on the above embodiment, the end surface of the transverse clamping hole 33 is parallel to the side wall of the longitudinal guide hole 32, and the side wall of the horn guide hole 34 extends to the end surface of the transverse clamping hole 33, which can guide the movement of the limiting column 22 in the switching process, reduce the jerk feeling in the switching process, and improve the stability and smoothness of the moving piece switching.

[0024] Based on the above embodiment, the shell 10 includes a lower cover 11, the lower cover 11 includes a seat body 110 and a plug plate 111 extending from one side of the seat body 110, the plug plate 111 is provided with a movable groove 112 at the bottom, the moving piece 30 is movably arranged on the movable groove 112, the seat body 110 is provided with a control chamber 113 at the bottom, the other end of the arm plate 21 is rotatably connected to the control chamber 113, and the driving mechanism includes a U-shaped iron 40 arranged in the control chamber 113, a coil 41 sleeved on the U-shaped iron 40 and a magnet 42 fixedly connected to the end of the arm plate 21 away from the limiting column 22. Specifically, when the coil 41 is electrified, a magnetic field is formed on the U-shaped iron 40, the magnetic field of the U-shaped iron 40 and the magnetic field of the magnet 42 interact, thereby driving the arm plate 21 to rotate in the control chamber 113, by changing the current direction through the coil 41, the magnetic field direction of the U-shaped iron 40 can be switched, so as to drive the arm plate 21 to swing in different directions, thereby driving the limiting column 22 to move in the strip-shaped hole 31 and driving the moving piece 30 to move in different directions, and the moving piece switching function is realized.

[0025] Based on the above embodiment, a through hole 420 is provided through the center of the magnet 42, and a sleeve portion 23 matching the through hole 420 is provided at the top of the arm plate 21 away from the limiting post 22. The through hole 420 is fitted onto the sleeve portion 23, and a rotating shaft 114 matching the inner ring of the sleeve portion 23 is provided at the top of the control chamber 113. The rotating shaft 114 is connected in the sleeve portion 23. When the polarity of the U-shaped iron 40 changes, the magnet 42 generates a force under the action of the magnetic field of the U-shaped iron 40, and the sleeve portion 23 will rotate around the rotating shaft 114. The magnet 42 will rotate synchronously with the sleeve portion 23, which can ensure the stable rotation of the swing arm 20.

[0026] Based on the above embodiments, the housing 10 further includes a lens mount 12, which includes a base plate 120 and a lens connecting sleeve 121 disposed on the top of the base plate 120. The base plate 120 is provided with a slot 122 that matches the insert plate 111, and the side wall of the base plate 120 is provided with a groove 123 that communicates with the slot 122. The side wall of the seat body 110 is provided with a buckle 115 that matches the groove 123, and the buckle 115 is fastened to the groove 123. When assembling the lower cover 11 onto the lens mount 12, the insert plate 111 is inserted along the slot 122 until the buckle 115 is fastened to the groove 123, which realizes the quick assembly of the lower cover 11 and the lens mount 12, has a good positioning effect, and is convenient for disassembly and assembly.

[0027] As attached Figure 6 The diagram shows the self-locking force analysis of the movable piece during the use of this invention. After the movable piece 30 completes the switching, the limiting post 22 is located at one end of the transverse locking hole 33. When the movable piece 30 is subjected to an outward pushing force along the length direction of the movable groove 112, the outward pushing force will be decomposed into two vertical components. One component acts on the axis of the swing arm 20, and the other component acts on the side wall of the movable groove 112. Due to the limiting effect of the side wall of the movable groove 112, the movable piece 30 cannot move along its width direction. The end face of the transverse locking hole 33 will abut against the limiting post 22, and the movable piece 30 will also be unable to move along its length direction, thus realizing the self-locking function of the movable piece 30.

[0028] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A high-retention dual filter changer comprising a housing, a swing arm, a drive mechanism, a moving plate, the swing arm, the drive mechanism, the moving plate being disposed in the housing, characterized in that, The mobile piece is provided with a strip-shaped hole, which comprises a longitudinal guide hole arranged along the width direction of the mobile piece, a transverse clamping hole arranged along the length direction of the mobile piece and connected to one end of the longitudinal guide hole, and a horn guide hole arranged in a trumpet shape at the connecting end of the longitudinal guide hole and the transverse clamping hole; the swing arm comprises an arm plate and a limiting column arranged at one end of the arm plate, the arm plate can swing under the driving of the driving mechanism, and the limiting column is movably arranged in the strip-shaped hole; the shell comprises a lower cover and a lens seat, the lower cover comprises a seat body and an insertion plate extended from one side of the seat body, the bottom of the insertion plate is provided with a movable groove, the mobile piece is movably arranged on the movable groove, the bottom of the seat body is provided with a control chamber, the other end of the arm plate is rotatably connected to the control chamber, the driving mechanism comprises a U-shaped iron arranged in the control chamber, a coil sleeved on the U-shaped iron, and a magnet fixedly connected to the end of the arm plate away from the limiting column, the lens seat comprises a bottom plate and a lens connecting sleeve arranged on the top of the bottom plate, the bottom plate is provided with an insertion slot matched with the insertion plate, the side wall of the bottom plate is provided with a clamping slot communicated with the insertion slot, and the side wall of the seat body is provided with a buckle matched with the clamping slot.

2. A high-retention dual filter changer according to claim 1, wherein The end surface of the transverse clamping hole is parallel to the side wall of the longitudinal guide hole, and the side wall of the horn guide hole extends to the end surface of the transverse clamping hole.

3. A high-retention dual filter changer according to claim 1, wherein A through hole is arranged through the center of the magnet, a sleeve part matched with the through hole is arranged at the top of the end of the arm plate away from the limiting column, the through hole is sleeved on the sleeve part, a rotating shaft matched with the inner ring of the sleeve part is arranged at the top of the control chamber, and the rotating shaft is connected in the sleeve part.

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