Lens mount

Abstract

The utility model relates to a lens mount, belongs to the technical field of monitoring equipment, and solves the problems that in the prior art, the assembly process of an optical filter switching device and a lens module is complicated, and the connection stability between the optical filter switching device and the lens module is poor. The lens mount comprises a mounting base, a switching assembly, a support assembly and an imaging assembly. The mounting base comprises a first end, a second end and a connecting cylinder; the first end is a circular sleeve and is used for mounting a universal lens barrel; the second end is a square sleeve and is used for installing the switching assembly, the support assembly and the imaging assembly. A central through hole is formed in the connecting cylinder, a built-in lens is arranged in the central through hole, and the axis of the central through hole, the center line of the first end and the center line of the second end coincide with the optical axis of the built-in lens. According to the mounting base provided by the utility model, the assembly process is simplified, and the stability is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to monitoring equipment technical field especially relates to a lens seat. BACKGROUND

[0002] With the high -speed development of social economy and science and technology, people's security consciousness gradually promotes, and the requirement of security monitoring product is also increasingly strict. The modern monitoring equipment requires the product to work continuously day and night, in order to improve the lens image quality, ensure that the lens is not color deviation under strong light, and the night vision effect is good under weak light, usually need to use double filter switching device.

[0003] In the prior art, the filter switching device is usually a separate product, which needs to be installed on the lens module during use, and then the whole is installed on the PCB board, the assembly process is complex, and the connection stability between the filter switching device and the lens module is poor. In addition, the wiring mode of the filter switching device and the PCB board usually adopts wire connection, which has high cost, needs to be wound and arranged during transportation, cannot use automatic equipment to complete the connection of the wire, has low assembly efficiency, and is easy to have poor contact phenomenon, which affects the product quality stability. SUMMARY

[0004] In view of the above analysis, the utility model embodiment aims at providing a lens seat to solve the problems of complex assembly process of filter switching device and lens seat in the prior art, and poor connection stability between filter switching device and lens module.

[0005] On the one hand, the utility model provides a lens seat, including installation base, switching assembly, support assembly and imaging assembly, the installation base includes first end, second end and connecting barrel, the first end is round sleeve, is used for installing general lens barrel, the second end is square sleeve, is used for installing switching assembly, support assembly and imaging assembly, the connecting barrel is used for connecting the first end and the second end, the connecting barrel is provided with center through -hole, and the center through -hole penetrates the first end and the second end, the center through -hole is provided with self -supporting lens, the center line of the center through -hole, the first end, the second end all coincide with the optical axis of the self -supporting lens, the support assembly is provided with at least two filters, the switching assembly can drive the support assembly reciprocating swing between first position and second position, to selectively make one of the two filters in the light path, the imaging assembly can receive the light after the filter light filtering and image.

[0006] Further, the support assembly includes a positioning shaft nail and a filter support, the filter support is rotatably arranged on the installation base through the positioning shaft nail.

[0007] Further, the filter support includes a waist-shaped mounting plate and a pin hole base outwardly protruding from one side of the waist-shaped mounting plate, the pin hole base is provided with a shaft pin hole, and the positioning shaft pin is arranged in the shaft pin hole.

[0008] Further, the waist-shaped mounting plate is provided with two circular filter mounting grooves and a driving groove side by side, the filter is arranged in the filter mounting groove, and the driving groove cooperates with the switching assembly to drive the filter support to rotate around the positioning shaft pin.

[0009] Further, the switching assembly includes a switching support and a swing connecting rod, the swing connecting rod is arranged on the switching support and can swing relative to the switching support, and an end of the swing connecting rod is provided with a connecting rod convex shaft which can be clamped into the driving groove.

[0010] Further, the switching assembly further includes an external electrode sheet and an inductor coil, the external electrode sheet is arranged on the switching support and can be in contact with and conductive to the power supply contact on the imaging assembly, the external electrode sheet is connected with the inductor coil, and the inductor coil is sleeved outside the swing connecting rod.

[0011] Further, the external electrode sheet includes a U-shaped bottom and two bent tops, and the bent top is in contact with and conductive to the power supply contact on the imaging assembly.

[0012] Further, the external electrode sheet is an elastic electrode sheet, and the bent top can be elastically pressed down.

[0013] Further, the imaging assembly includes an imaging circuit board, an imaging device and a power supply contact, and the imaging assembly can enclose the end of the second end of the mounting base.

[0014] Further, the imaging assembly includes an imaging circuit board, an imaging device and a power supply contact, the imaging circuit board is fixedly connected to the second end of the mounting base, the imaging device and the power supply contact are fixedly arranged on the imaging circuit board, the imaging device is located on the optical path, and the power supply contact is located above the switching assembly.

[0015] Compared with the prior art, the present application can at least realize one of the following beneficial effects:

[0016] (1) The utility model discloses a mounting base can set up the support assembly of filter and switching assembly to the mounting base and become integrated structure, only need to install general lens to lens seat when assembling, then fix lens seat to the position that needs, spare the secondary installation and adaptation of switching assembly in whole machine assembly, and the assembly procedure is simple, and the stability is good. Meanwhile, install general lens barrel through the first end of mounting base, set up switching assembly, support assembly and imaging assembly through the second end, make the light path of expectation in mounting base, finally obtain monitoring image through imaging assembly, adapt to general lens and imaging assembly of various models, improve product modular utilization rate, reduce product cost.

[0017] (2) The utility model discloses the mode that makes the rotating shaft of filter support protrude one side of waist type mounting plate, make the included angle of the hole center of axle nail hole and the center of two filter mounting slots less than 90 DEG, compared with prior art, reduce the angle that filter support needs to rotate when switching filter, can shorten the length of drive groove, and then reduce the size of filter support.

[0018] (3) In the utility model, the external electrode sheet is used to replace the external wire in the prior art, which avoids welding the wire or contact, is convenient to disassemble, and is suitable for installing different imaging components. In addition, the elastic electrode sheet is used to make the electrical connection between the switching assembly and the imaging circuit board simple and stable, thereby effectively improving the assembly efficiency and quality stability.

[0019] In the utility model, the above technical solutions can be combined with each other to realize more preferred combination solutions. Other features and advantages of the utility model will be described in the subsequent specification, and some advantages can become apparent from the specification or be understood through the implementation of the utility model. The purpose and other advantages of the utility model can be realized and obtained through the contents specifically pointed out in the specification and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings are only used for the purpose of illustrating specific embodiments and are not considered as limiting the utility model. In the entire drawings, the same reference signs represent the same parts.

[0021] Figure 1 It is an explosion schematic view of the lens seat of the utility model;

[0022] Figure 2 It is a structure schematic view of the lens seat with external lens barrel of the utility model;

[0023] Figure 3 It is an axial section schematic view of the mounting base in the lens seat of the utility model;

[0024] Figure 4Structure schematic diagram of the lens seat from two end perspectives, wherein (a) is a first end perspective, and (b) is a second end perspective;

[0025] Figure 5 Structure schematic diagram of the switching assembly of the lens seat

[0026] Figure 6 Explosion view of the switching assembly of the lens seat;

[0027] Figure 7 Structure schematic diagram of the support assembly of the lens seat provided with two filters;

[0028] Figure 8 Structure schematic diagram of the lens seat in two modes before and after filter switching, wherein (a) is a daytime mode, and (b) is a night mode;

[0029] Figure 9 Structure schematic diagram of the positioning shaft nail of the lens seat;

[0030] Figure 10 Structure schematic diagram of the imaging assembly of the lens seat;

[0031] Figure 11 Optical path diagram of the lens seat when working.

[0032] Reference signs:

[0033] 100 - mounting base; 200 - switching assembly; 300 - support assembly; 400 - imaging assembly; 500 - first screw; 600 - second screw; 700 - lens barrel;

[0034] 110 - externally connected through hole; 120 - general lens mounting screw hole; 130 - self-provided lens mounting hole; 131 - self-provided lens; 140 - switching assembly fixing hole; 150 - first imaging assembly fixing hole; 160 - light transmission hole; 170 - filter support rotating fixing hole; 180 - right limiting column; 190 - left limiting column; 210 - switching support; 211 - switching support fixing hole; 220 - externally connected electrode sheet; 230 - inductance coil; 240 - swing connecting rod; 241 - connecting rod protruding shaft; 310 - first filter; 320 - filter support; 321 - shaft nail hole; 322 - driving groove; 330 - positioning shaft nail; 331 - tightening end; 332 - rotating shaft section; 333 - threaded section; 340 - second filter; 410 - imaging device; 420 - imaging circuit board; 430 - power supply contact; 440 - second imaging assembly fixing hole. DETAILED DESCRIPTION

[0035] The preferred embodiments of the utility model are specifically described below in combination with the drawings, wherein the drawings form part of the utility model and are used together with the embodiments of the utility model to explain the principles of the utility model, and are not used to limit the scope of the utility model.

[0036] Embodiment 1

[0037] As shown in one specific embodiment of the utility model, Figure 1 , Figure 2 A lens seat is disclosed, comprising a mounting base 100, a switching assembly 200, a bracket assembly 300 and an imaging assembly 400. Among them, the switching assembly 200, the bracket assembly 300 and the imaging assembly 400 are all arranged in the mounting base 100, the mounting base 100 has a central through hole, the central through hole is provided with a lens, and the central axis of the central through hole coincides with the optical axis of the lens. The bracket assembly 300 is provided with at least two optical filters; the switching assembly 200 can drive the bracket assembly 300 to reciprocate between the first position and the second position, so as to selectively make one of the two optical filters in the optical path; the imaging assembly 400 can receive the light after being filtered by the optical filter and image. The lens seat in the embodiment, the first end of the mounting base 100 is used for connecting the existing lens barrel 700, as shown in Figure 2 ; the second end is suitable for mounting at the required position, such as rack, wall and the like.

[0038] Compared with the prior art, the lens seat provided by the embodiment eliminates the secondary installation and adaptation of the switching assembly in the whole machine assembly, and the electrical connection mode of the switching assembly and the PCB board is simple and stable, which effectively improves the assembly efficiency and quality stability.

[0039] Specifically, the structure of the mounting base 100 is as shown in Figure 3 , Figure 4 , comprising a first end, a second end and a connecting barrel. The first end of the mounting base 100 is a circular sleeve, the second end is a square sleeve, and the connecting barrel is a circular barrel, which is provided with a central through hole penetrating through the first end and the second end, and the central axis of the central through hole coincides with the optical axis of the lens 131.

[0040] The structure of the first end of the mounting base 100 is shown in Figure 4 (a), the outer periphery of the circular sleeve is provided with four mounting lugs, and each mounting lug is provided with an external through hole 110 for connecting with external elements.

[0041] The inner periphery of the circular sleeve is provided with threads, forming a general lens mounting screw hole 120, for mounting a general lens 700, as shown in Figure 2 . The lens barrel 700 is threadedly connected with the mounting base 100, and the incident light can be adjusted by forward and reverse rotation to achieve zoom effect.

[0042] The diameter of the connecting cylinder is smaller than the diameter of the first end and also smaller than the diameter of the inscribed circle of the second end.

[0043] The end of the connecting cylinder connected with the square sleeve of the second end is provided with a self-lens mounting hole 130 for mounting a self-lens 131 of the device, which is used for converging light in the lens barrel to the imaging assembly 400.

[0044] The first end of the mounting base 100 is compatible with the expansion function of various optical devices by being provided with a circumscribed through hole 110, a universal lens mounting screw hole 120 and a self-lens mounting hole 130.

[0045] The structure of the second end of the mounting base 100 is shown in Figure 4 (b), the end of the square sleeve connected with the connecting cylinder is provided with a mounting base, and the mounting base is provided with a light-transmitting hole 160 corresponding to the self-lens mounting hole 130, which is used for allowing light to pass through to irradiate on the imaging assembly. A switching assembly fixing hole 140 is arranged on one side of the mounting base, and a filter holder rotating fixing hole 170, a right limiting column 180 and a left limiting column 190 are arranged on the side of the mounting base opposite to the switching assembly fixing hole 140. Four first imaging assembly fixing holes 150 are arranged at four corners of the end of the square sleeve, which are used for fixing the imaging assembly 400.

[0046] In the utility model, the second end of the mounting base 100 is fixed with the imaging assembly 400 through a screw, and the switching assembly 200 and the imaging assembly 400 are connected through an elastic electrical connection mode, so that different imaging assemblies 400 can be conveniently adapted and installed.

[0047] The structure of the switching assembly 200 is shown in Figure 5 、 Figure 6 The switching assembly 200 comprises a switching support 210, an external electrode sheet 220, an inductive coil 230 and a swing connecting rod 240.

[0048] The switching support 210 comprises two vertical side plates and a connecting plate connecting the two side plates, and the side plates and the connecting plate form an I-shaped structure. A swing connecting rod mounting plate is arranged on one side of the connecting plate, and the swing connecting rod mounting plate is provided with a mounting hole, and the swing connecting rod 240 is connected with the mounting hole through a rotating shaft; the other side of the connecting plate is provided with an electrode sheet mounting groove for fixedly arranging the external electrode sheet 220.

[0049] The switching support 210 further comprises an adapter block, and the I-shaped structure is fixedly arranged on the adapter block. The adapter block is provided with switching support fixing holes 211 on both sides, which are used for being fixedly arranged on the mounting base 100 through first screws 500.

[0050] The swing link 240 is mounted on the switching bracket 210 via a pivot and can swing relative to the switching bracket 210. A connecting rod protrusion 241 is provided at the end of the swing link 240, which can be engaged within the drive groove 322 of the bracket assembly 300. An inductor coil 230 is sleeved outside the swing link 240 and located between the two side plates.

[0051] The structure of the external electrode plate 220 is as follows Figure 6 As shown, the device includes a U-shaped bottom and two bent tops. The U-shaped bottom is positioned within the electrode mounting slot on the switching bracket 210, and the two bent tops can contact and conduct electricity with the power contact 430 on the imaging assembly 400. The external electrode 220 is electrically connected to the inductor coil 230. By using the external electrode 220, it avoids the need to set up a coil interface or solder wires on the switching bracket 210 to introduce current, simplifying the assembly process and improving efficiency. By having the bent tops contact the power contact 430, the contact area is increased, ensuring current stability and reducing the requirements for assembly precision.

[0052] In the preferred embodiment, the external electrode 220 is an elastic electrode, whose bent top can be elastically pressed down, and during assembly, it can be tightly abutted against the power contact 430 through elastic deformation.

[0053] The shape of the external electrode 220 in the switching component 200 can be varied. The material of the external electrode 220 is phosphor bronze, but other materials with good elasticity and conductivity can also be selected.

[0054] When the external electrode plate 220 is energized, the inductor coil 230 generates a magnetic field, which drives the swing link 240 to swing. Changing the direction of the energization of the external electrode plate 220 can change the swing direction of the swing link 240.

[0055] In this invention, the electrical connection method is a contact method between elastic electrodes and contacts, eliminating the need for welding between cables and boards. This avoids electrical connection instability caused by solder joint defects, saves production time, and facilitates mass automated production. Simultaneously, embedding the switching component within the lens mount allows for the adaptation of various modules at both ends of the lens mount, improving product modularity and reducing product costs.

[0056] The structure of the support assembly 300 is as follows Figure 7 , Figure 9 As shown, it includes a filter holder 320 and a positioning pin 330. The filter holder 320 is rotatably mounted on the mounting base 100 at the filter holder rotation fixing hole 170 via the positioning pin 330.

[0057] The structure of the positioning pin 330 is as follows Figure 9As shown, the filter holder 320 includes a waist-shaped mounting plate, a pin hole base arranged on one side of the waist-shaped mounting plate and protruding outward by a distance, and a positioning pin 330 arranged on the pin hole base. The waist-shaped mounting plate includes a flat side, a large circular arc side opposite to the flat side, and small circular arc sides respectively connecting two ends of the flat side and the large circular arc side. The waist-shaped mounting plate is provided with two circular filter mounting grooves and a driving groove 322 side by side. The two circular filter mounting grooves are arranged adjacent to the small circular arc sides respectively and concentric with the small circular arc sides. The driving groove 322 is an elongated groove arranged between the two filter mounting grooves and extending from the flat side of the waist-shaped mounting plate to the large circular arc side.

[0058] As shown, the filter holder 320 includes a waist-shaped mounting plate, a pin hole base arranged on one side of the waist-shaped mounting plate and protruding outward by a distance, and a positioning pin 330 arranged on the pin hole base. The waist-shaped mounting plate includes a flat side, a large circular arc side opposite to the flat side, and small circular arc sides respectively connecting two ends of the flat side and the large circular arc side. The waist-shaped mounting plate is provided with two circular filter mounting grooves and a driving groove 322 side by side. The two circular filter mounting grooves are arranged adjacent to the small circular arc sides respectively and concentric with the small circular arc sides. The driving groove 322 is an elongated groove arranged between the two filter mounting grooves and extending from the flat side of the waist-shaped mounting plate to the large circular arc side. Figure 7

[0059] The pin hole base is arranged on the flat side of the waist-shaped mounting plate and protrudes from the flat side by a distance. The pin hole base is provided with an axis pin hole 321. An angle between a center line of the axis pin hole 321 and a line connecting centers of the two filter mounting grooves is less than 90°, and an extension direction of the driving groove 322 passes through the axis pin hole 321. In this way, the angle of rotation of the filter holder 320 when switching the filters can be reduced, the length of the driving groove 322 can be shortened, the size of the filter holder 320 can be reduced, the overall structure can be simplified, and the device can be miniaturized.

[0060] The positioning pin 330 passes through the axis pin hole 321 and is arranged at the filter holder rotating and fixing hole 170 on the mounting base 100. The filter holder 320 can rotate relative to the positioning pin 330.

[0061] The filters are arranged in the filter mounting grooves. Specifically, the first filter 310 is arranged in the left filter mounting groove, and the second filter 340 is arranged in the right filter mounting groove. The fixing mode of the filter holder 320 and the two filters can be fixed by glue, or ultrasonic welding, buckling, or the like.

[0062] The driving groove 322 cooperates with the switching assembly 200 to drive the filter holder 320 to rotate around the positioning pin 330. Specifically, as shown in Figure 8 ​As shown, the end of the swing link 240 is connected with the link convex shaft 241, which is inserted into the driving groove 322 of the support assembly 300, when the swing link 240 swings left and right, the link convex shaft 241 slides in the driving groove 322, and drives the filter support 320 to swing left or right to the limit position, so as to realize the switching of the filter in the light path. The right limit post 180 and the left limit post 190 can limit the rotation of the filter support 320.

[0063] The structure of the imaging assembly 400 is shown in Figure 10 As shown, the imaging assembly 400 includes an imaging circuit board 420, an imaging device 410, a power contact 430, and a second imaging assembly fixing hole 440 arranged at four corner portions of the imaging circuit board 420. The imaging circuit board 420 is fixedly connected at the first imaging assembly fixing hole 150 of the end of the second end of the mounting base 100 through the second screw 600 and the second imaging assembly fixing hole 440. The imaging device 410 and the power contact 430 are fixedly arranged on the imaging circuit board 420, and the imaging device 410 is located on the light path, and the power contact 430 is located above the switching assembly 200, so that the external electrode sheet 220 in the switching assembly 200 abuts on the power contact 430.

[0064] The working mode switching principle of the lens seat of the utility model is as follows:

[0065] Referring to Figure 8 When the daytime light intensity is high, the switching assembly 200 receives the instruction and is powered for a certain time, the inductor coil 230 generates a magnetic field, drives the swing link 240 to swing, the link convex shaft 241 on the swing link 240 slides in the driving groove 322 on the filter support 320, drives the support assembly 300 with two kinds of filters to swing around the positioning shaft nail 330 to the left limit post 190 (i.e. the first position), so that the first filter 310 is in the light path, and the whole lens device is in the daytime working mode, as shown in Figure 8 (a);

[0066] When in the night light environment, the switching assembly 200 receives the instruction and is reversely powered for a certain time, the inductor coil 230 generates a reverse magnetic field, drives the swing link 240 to swing reversely, the link convex shaft 241 on the swing link 240 slides in the driving groove 322 on the filter support 320, drives the support assembly 300 with two kinds of filters to swing reversely around the positioning shaft nail 330 to the right limit post 180 (i.e. the second position), so that the second filter 340 is in the light path, and the whole lens device is in the night working mode, as shown in Figure 8 (b).

[0067] Referring to Figure 11The lens barrel is used in actual use, the imaging assembly 400, the self-lens 131 and the lens barrel 700 are selected according to needs, and are assembled to be a whole.

[0068] The lens barrel 700 is screw-connected with the mounting base 100, and the incident light can be adjusted through positive and negative rotation, so that the zooming effect is achieved.

[0069] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A lens mount, characterized by, The utility model provides a kind of camera lens, including installation base (100), switching component (200), support component (300) and imaging component (400);Wherein, the installation base (100) includes first end, second end and connecting cylinder;The first end is circular sleeve, for installing general lens barrel (700);The second end is square sleeve, for installing the switching component (200), support component (300) and imaging component (400);The connecting cylinder is used to connect the first end and the second end;Center through-hole is provided in the connecting cylinder, and the center through-hole penetrates the first end and the second end;Self-lens is provided in the center through-hole, and the center line of the first end, second end and the optical axis of the self-lens are coincident;Two optical filters are provided on the support component (300);The switching component (200) can drive the support component (300) reciprocating swing between first position and second position, to selectively make one of the two optical filters in optical path;The imaging component (400) can receive light after being filtered by the optical filter and image.

2. The lens holder according to claim 1, characterized in that, The support component (300) includes positioning shaft peg (330) and optical filter support (320), and the optical filter support (320) is rotatably arranged on the installation base (100) by the positioning shaft peg (330).

3. The lens holder of claim 2, wherein The optical filter support (320) includes a waist-shaped mounting plate and a peg hole base protruding outward on one side of the waist-shaped mounting plate, and the peg hole base is provided with a shaft peg hole (321), and the positioning shaft peg (330) is arranged in the shaft peg hole (321).

4. The lens holder according to claim 3, characterized in that, The waist-shaped mounting plate is provided with two circular optical filter mounting grooves and a driving groove (322) side by side, and the optical filter is arranged in the optical filter mounting groove; the driving groove (322) cooperates with the switching component (200) to drive the optical filter support (320) to rotate around the positioning shaft peg (330).

5. The lens holder of claim 4, wherein The switching component (200) includes a switching support (210) and a swing link (240), the swing link (240) is arranged on the switching support (210) and can swing relative to the switching support (210), and an end of the swing link (240) is provided with a link convex shaft (241), and the link convex shaft (241) can be clamped into the driving groove (322).

6. The lens holder of claim 5, wherein The switching component (200) further includes an external electrode sheet (220) and an inductor coil (230), the external electrode sheet (220) is arranged on the switching support (210) and can contact and conduct with a power supply contact (430) on the imaging component (400), the external electrode sheet (220) is connected with the inductor coil (230), and the inductor coil (230) is sleeved outside the swing link (240).

7. The lens holder of claim 6, wherein The external electrode sheet (220) includes a U-shaped bottom and two bent tops, and the bent top contacts and conducts with the power supply contact (430) on the imaging component (400).

8. The lens holder of claim 7, wherein The outer electrode sheet (220) is an elastic electrode sheet, and the bent top part can be elastically pressed down.

9. The lens holder of claim 1, wherein The imaging assembly (400) comprises an imaging circuit board (420), an imaging device (410) and power supply contacts (430), and the imaging assembly (400) can seal the end of the second end of the mounting base (100).

10. The lens holder of claim 9, wherein The imaging circuit board (420) is fixedly connected to the second end of the mounting base (100), the imaging device (410) and the power supply contacts (430) are fixedly arranged on the imaging circuit board (420), and the imaging device (410) is located on the light path, and the power supply contacts (430) are located above the switching assembly (200).

Images