Efficient lens nut locking device

Abstract

The utility model discloses a high-efficiency lens nut locking device, which comprises a pressing assembly, a pressing assembly, a locking assembly and a locking assembly, the pressing assembly comprises a mounting bracket, a linear motion mechanism, a motor and a locking unit, the mounting bracket is connected with a rack, and the linear motion mechanism is connected with the mounting bracket and is used for driving the motor to move along a first direction; the locking unit comprises an outer shaft sleeve, an inner shaft sleeve, a middle shaft pressing block, a nut, a spring, a nut pressing ring and a supporting seat, the motor drives the outer shaft sleeve to rotate around a first direction, so that the nut pressing ring drives the lens nut to rotate under the elastic action of the spring, and the lens nut and the lens base are locked and connected; and the first position detection unit is used for detecting the height of the height adjusting unit along the first direction so as to determine the locking height of the lens nut and the lens base. The device is helpful for realizing quick locking of the lens nut, can adapt to assembly of nuts with different heights, and is high in assembly precision and good in universality.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lens assembly technical field, concretely relates to a high -efficient lens nut locking device. BACKGROUND

[0002] The lens structure is mainly composed of a lens, a nut and a lens base, and the lens is pressed on the lens base by tightening the nut. However, most of the lens structure assembly locking is realized by manual equipment with the help of tooling at present, which requires high proficiency of personnel, so that the lens is easily damaged and the assembly is uneven during the assembly process, resulting in poor focusing effect. In addition, the locking depth can only rely on the experience of workers, and the locking depth is not uniform, the efficiency is low, and the assembly locking of different height nuts cannot be adapted, and the versatility is poor. UTILITY MODEL CONTENTS

[0003] The utility model aims at the above problems, and provides a high -efficient lens nut locking device, which is helpful to realize the quick locking of the lens nut, and can adapt to the assembly of different height nuts, has high assembly precision and good versatility.

[0004] To achieve the above object, the technical scheme adopted by the utility model is:

[0005] The utility model provides a high -efficient lens nut locking device, which comprises a rack, a pressing assembly and a first position detection unit, wherein:

[0006] The pressing assembly comprises a mounting bracket, a linear motion mechanism, a motor and a locking unit, the mounting bracket is connected with the rack, the linear motion mechanism is connected with the mounting bracket and is used for driving the motor to move in a first direction, and the locking unit comprises an outer shaft sleeve, an inner shaft sleeve, a middle shaft pressing block, a nut, a spring, a nut pressing ring and a support seat, wherein:

[0007] The outer shaft sleeve is connected with the motor, the inner shaft sleeve is connected with the outer shaft sleeve, the middle shaft pressing block comprises a middle shaft and a height adjusting unit which are connected perpendicularly, the middle shaft is slidably arranged in the inner shaft sleeve and is limited and positioned by the nut which is screwed on the middle shaft, the nut and the height adjusting unit are located on the two sides of the inner shaft sleeve respectively, the spring is sleeved on the middle shaft and abuts against the inner shaft sleeve and the middle shaft at two ends respectively, the nut pressing ring is connected with the height adjusting unit and is provided with a first adaptive hole for mounting the lens nut, the support seat is connected with the rack and is provided with a second adaptive hole for placing the lens base on the side close to the nut pressing ring, and the motor drives the outer shaft sleeve to rotate around the first direction, so that the lens nut is rotated by the nut pressing ring, and the lens nut and the lens base are locked and connected.

[0008] The first position detection unit is used for detecting the height of the height adjusting unit in the first direction, so as to determine the locking height of the lens nut and the lens base.

[0009] Preferably, the rack comprises a platform and an electric control box, the mounting support is connected to the platform and located above the platform, the electric control box is integrated with the platform, and the linear motion mechanism, the motor and the first position detection unit are electrically connected to the electric control box.

[0010] Preferably, the pressing assembly further comprises a second position detection unit, which is electrically connected to the electric control box and used for detecting the moving position of the linear motion mechanism.

[0011] Preferably, the part of the middle shaft close to the height adjusting unit is a hexagonal prism, the hexagonal prism is in sliding fit with the inner shaft sleeve, and the two ends of the spring abut against the inner shaft sleeve and the hexagonal prism, respectively.

[0012] Preferably, the outer shaft sleeve, the inner shaft sleeve, the middle shaft pressing block, the nut, the spring, the nut pressing ring and the lens nut are coaxially arranged, the inner shaft sleeve is sleeved in the outer shaft sleeve and fixedly connected with the outer shaft sleeve, and the height adjusting unit comprises a stopper.

[0013] Preferably, the height adjusting unit further comprises an adjusting cylinder, the adjusting cylinder is sleeved on the stopper in sliding fit along a first direction, and the stopper is a cylindrical body.

[0014] Preferably, a plurality of first waist-shaped holes parallel to the first direction are formed in the adjusting cylinder, and the adjusting cylinder is connected with the stopper through screws penetrating the first waist-shaped holes.

[0015] Preferably, the first position detection unit comprises two oppositely arranged sensing units, the sensing unit comprises a fixing seat and a position sensor, the fixing seat is connected to the rack, the position sensor is connected to the fixing seat, and the two position sensors are eccentrically arranged with the height adjusting unit.

[0016] Preferably, the two position sensors of the first position detection unit form a pair of emitting and receiving optical fiber sensors.

[0017] Preferably, the fixing seat is L-shaped and a plurality of second waist-shaped holes and a plurality of third waist-shaped holes are formed in two right-angled surfaces of the fixing seat correspondingly, and the second waist-shaped holes and the third waist-shaped holes are perpendicular to each other.

[0018] Compared with the prior art, the high-efficiency lens nut locking device has the following beneficial effects:

[0019] The locking unit of the high-efficiency lens nut locking device can avoid pressing the lens nut and the lens base by the elastic force of the spring, can block the first position detection unit by the height adjusting unit of the middle shaft pressing block, can automatically lock the lens nut and the lens base to the corresponding depth, can adjust the height of the height adjusting unit of the middle shaft pressing block to lock lens nuts of different heights, and greatly improves the working efficiency and the application range, has high assembly precision and good universality. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1It is the perspective view of the high-efficiency lens nut locking device of the utility model.

[0021] Figure 2 It is the front view of the high-efficiency lens nut locking device of the utility model.

[0022] Figure 3 It is the left view of the high-efficiency lens nut locking device of the utility model.

[0023] Figure 4 It is the perspective view of the locking unit of the utility model.

[0024] Figure 5 It is the front view of the locking unit of the utility model.

[0025] Figure 6 It is the A-A sectional view of the utility model. Figure 5

[0026] Mark 1, rack; 2, press assembly; 3, first position detection unit; 4, lens nut; 5, lens base; 11, platform; 12, electric control box; 21, mounting bracket; 22, linear motion mechanism; 23, motor; 24, locking unit; 25, second position detection unit; 31, fixed seat; 32, position sensor; 241, outer shaft sleeve; 242, inner shaft sleeve; 243, middle shaft pressing block; 244, nut; 245, spring; 246, nut pressing ring; 247, support seat; 248, adjusting cylinder. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] It should be noted that when an assembly is referred to as being "connected" to another assembly, it can be directly connected to the other assembly or there can be a middle assembly. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the specification of the present application is only for the purpose of describing specific embodiments and is not intended to limit the present application.

[0029] As shown in Figures 1-6 , a high-efficiency lens nut locking device, comprising a rack 1, a press assembly 2 and a first position detection unit 3, wherein:

[0030] ​The pressing assembly 2 includes a mounting bracket 21, a linear motion mechanism 22, a motor 23, and a locking unit 24. The mounting bracket 21 is connected to the frame 1. The linear motion mechanism 22 is connected to the mounting bracket 21 and is used to drive the motor 23 to move in a first direction. The locking unit 24 includes an outer bushing 241, an inner bushing 242, a central shaft pressure block 243, a nut 244, a spring 245, a nut pressure ring 246, and a support base 247, wherein:

[0031] The outer bushing 241 is connected to the motor 23, and the inner bushing 242 is connected to the outer bushing 241. The central shaft pressure block 243 includes a vertically connected central shaft and a height adjustment unit. The central shaft is slidably installed in the inner bushing 242 and is prevented from falling off by a nut 244 screwed onto the central shaft. The nut 244 and the height adjustment unit are located on both sides of the inner bushing 242. The spring 245 is sleeved on the central shaft and its two ends abut against the inner bushing 242 and the central shaft, respectively. The nut pressure ring 246 is connected to the height adjustment unit and has a first adapter hole for installing the lens nut 4. The support base 247 is connected to the frame 1 and has a second adapter hole for placing the lens base 5 on the side near the nut pressure ring 246. The motor 23 drives the outer bushing 241 to rotate around the first direction, thereby causing the nut pressure ring 246 to drive the lens nut 4 to rotate, thus achieving a locking connection between the lens nut 4 and the lens base 5.

[0032] The first position detection unit 3 is used to detect the height of the height adjustment unit along the first direction, thereby determining the locking height of the lens nut 4 and the lens base 5.

[0033] In this high-efficiency lens nut locking device, the linear motion mechanism 22 can be Z-axis driven (i.e., up and down direction), the motor 23 can be a 28-stepper motor, the mounting bracket 21 can be equipped with reinforcing ribs to ensure structural stability, and the support base 247 is located directly below the nut pressure ring 246. The nut pressure ring 246 is provided with a first adapter hole for installing the lens nut 4. The first adapter hole can be a circular hole with the same diameter as the lens nut 4. The friction generated by the downward pressure of the locking unit 24 can drive the lens nut 4 to rotate, thereby achieving a locking connection between the lens nut 4 and the lens base 5. Alternatively, the first adapter hole can be provided with a rotation limiting structure (such as a limiting boss, limiting pin, etc.) to drive the lens nut 4 to rotate, thereby achieving a locking connection between the lens nut 4 and the lens base 5.

[0034] In one embodiment, the frame 1 includes a platform 11 and an electrical control box 12. A mounting bracket 21 is connected to the platform 11 and located above it. The electrical control box 12 is integrated with the platform 11. The linear motion mechanism 22, the motor 23, and the first position detection unit 3 are all electrically connected to the electrical control box 12. If the electrical control box 12 is installed below the platform 11, it can serve as a support base for the platform 11. The electrical control box 12 may have several buttons, and automatic operation of the electrical components can be achieved through programming.

[0035] In an embodiment, the pressing assembly 2 further comprises a second position detection unit 25 electrically connected with the electric control box 12 and used for detecting the moving position of the linear motion mechanism 22, which helps to ensure the accuracy and safety.

[0036] In an embodiment, the part of the middle shaft close to the height adjustment unit is a hexagonal prism, which is in sliding fit with the inner shaft sleeve 242, and the two ends of the spring 245 abut against the inner shaft sleeve 242 and the hexagonal prism respectively. The sliding fit and the elastic effect of the spring 245 make the force uniform and the lens nut 4 and the lens base 5 not easy to be damaged. The sliding connection can also be achieved by other shapes, such as quadrilateral, spline, etc.

[0037] In an embodiment, the outer shaft sleeve 241, the inner shaft sleeve 242, the middle shaft pressing block 243, the nut 244, the spring 245, the nut pressing ring 246 and the lens nut 4 are coaxially arranged, and the inner shaft sleeve 242 is sleeved in the outer shaft sleeve 241 and fixedly connected with the outer shaft sleeve 241. The height adjustment unit comprises a stopper. The inner shaft sleeve 242 is sleeved in the outer shaft sleeve 241 and fixedly connected with the outer shaft sleeve 241. The adapted flat surfaces (such as flat milling) can be provided on the inner shaft sleeve 242 and the outer shaft sleeve 241 respectively for rotation limiting and connection by means of a set screw, or other fixed connection methods known to those skilled in the art can be used.

[0038] In an embodiment, the height adjustment unit further comprises an adjusting cylinder 248, which is sleeved on the stopper in the first direction. The stopper can be a cylinder. The stopper can also be of any shape, and the adjusting cylinder 248 is preferably of a shape adapted to the stopper.

[0039] In an embodiment, a plurality of first waist-shaped holes parallel to the first direction are formed on the adjusting cylinder 248, and the adjusting cylinder 248 is connected with the stopper by means of a screw passing through the first waist-shaped hole. The sensing locking of the locking distance at different heights is achieved by adjusting the adjusting cylinder 248. It is easy to understand that any structure in the prior art can also be used for shielding, so that the first position detection unit 3 senses the upper and lower limit positions of the required locking distance.

[0040] In an embodiment, the first position detection unit 3 comprises two oppositely arranged sensing units, each of which comprises a fixed seat 31 and a position sensor 32. The fixed seat 31 is connected with the rack 1, and the position sensor 32 is connected with the fixed seat 31. The two position sensors 32 are eccentrically arranged with the height adjustment unit. Figure 3 As shown in the figure, the position sensor 32 needs to be eccentrically arranged to avoid the position of the middle shaft during the detection process, so as to prevent the shielding from affecting the detection.

[0041] In an embodiment, the two position sensors 32 of the first position detection unit 3 form a pair of light emitting fiber sensors. The two position sensors 32 of the pair of light emitting fiber sensors are fixed on the corresponding fixing seats 31 and located on both sides of the support seat 247. Alternatively, other position sensors known to those skilled in the art can also be used.

[0042] In an embodiment, the fixing seat 31 is L-shaped and a plurality of second waist-shaped holes and a plurality of third waist-shaped holes are respectively formed on the two right-angle surfaces of the fixing seat 31, and the second waist-shaped holes and the third waist-shaped holes are perpendicular to each other. The waist-shaped holes facilitate adjustment of the mounting position of the position sensor 32 and improve detection accuracy.

[0043] Working principle:

[0044] In operation, the lens cap 4 connected with the lens base 5 is placed in the profiling gap (second fitting hole) in the support seat 247, or the lens cap 4 and the lens base 5 are placed separately in the corresponding fitting holes, the start button of the electric control box 12 is pressed, the linear motion mechanism 22 (for example, the first direction is Z direction driving, i.e. up and down direction) drives the motor 23 to move in the first direction, drives the outer shaft sleeve 241 of the locking unit 24 to move slowly downward, so that the cap pressing ring 246 of the locking unit 24 contacts the lens cap 4, and the central shaft pressing block 243 is pressed upward to compress the spring 245 until the first position detection unit 3 (using a pair of light emitting fiber sensors) senses the lower edge of the height adjustment unit of the central shaft pressing block 243. At this time, the motor 23 (for example, a 28-step motor) drives the outer shaft sleeve 241 to rotate, locks the threads in the lens cap 4 into the lens base 5, until a specific distance is locked, the first position detection unit 3 senses the upper edge of the height adjustment unit of the central shaft pressing block 243, the motor 23 drives the outer shaft sleeve 241 to stop rotating, and finally the linear motion mechanism 22 drives the motor 23 to drive the outer shaft sleeve 241 to move upward quickly, completing the specific depth locking of the lens cap 4 and the lens base 5 once, and the cycle operation is repeated.

[0045] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not contradict, they should be considered within the scope of the present application.

[0046] The above-described embodiments only express the specific and detailed embodiments described in the present application, but should not be construed as limiting the scope of the application. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A high efficiency lens cap locking device, characterized in that: The high-efficiency lens nut locking device comprises a rack (1), a pressing assembly (2) and a first position detection unit (3), wherein: The pressing assembly (2) comprises a mounting bracket (21), a linear motion mechanism (22), a motor (23) and a locking unit (24), the mounting bracket (21) is connected with the rack (1), the linear motion mechanism (22) is connected with the mounting bracket (21) and is used for driving the motor (23) to move in a first direction, and the locking unit (24) comprises an outer shaft sleeve (241), an inner shaft sleeve (242), a middle shaft pressing block (243), a nut (244), a spring (245), a nut pressing ring (246) and a support seat (247), wherein: The outer shaft sleeve (241) is connected with the motor (23), the inner shaft sleeve (242) is connected with the outer shaft sleeve (241), the middle shaft pressing block (243) comprises a middle shaft and a height adjusting unit connected perpendicularly, the middle shaft slides through the inner shaft sleeve (242) and is prevented from being disengaged by the nut (244) screwed on the middle shaft, the nut (244) and the height adjusting unit are respectively located on two sides of the inner shaft sleeve (242), the spring (245) is sleeved on the middle shaft and the two ends thereof abut against the inner shaft sleeve (242) and the middle shaft respectively, the nut pressing ring (246) is connected with the height adjusting unit and is provided with a first matching hole for mounting the lens nut (4), the support seat (247) is connected with the rack (1) and is provided with a second matching hole for placing a lens base (5) on a side close to the nut pressing ring (246), and the motor (23) drives the outer shaft sleeve (241) to rotate around the first direction, so that the lens nut (4) is rotated by the nut pressing ring (246), and the lens nut (4) and the lens base (5) are locked and connected; The first position detection unit (3) is used for detecting the height of the height adjusting unit in the first direction, so as to determine the locking height of the lens nut (4) and the lens base (5).

2. The high efficiency lens cap locking device of claim 1, wherein: The rack (1) comprises a platform (11) and an electric control box (12), the mounting bracket (21) is connected with the platform (11) and is located above the platform (11), the electric control box (12) is integrated with the platform (11), and the linear motion mechanism (22), the motor (23) and the first position detection unit (3) are electrically connected with the electric control box (12).

3. The high efficiency lens cap locking device of claim 2, wherein: The pressing assembly (2) further comprises a second position detection unit (25), the second position detection unit (25) is electrically connected with the electric control box (12) and is used for detecting the moving position of the linear motion mechanism (22).

4. The high efficiency lens cap locking device of claim 1, wherein: The part of the middle shaft close to the height adjusting unit is a hexagonal prism, the hexagonal prism is in sliding fit with the inner shaft sleeve (242), and the two ends of the spring (245) abut against the inner shaft sleeve (242) and the hexagonal prism respectively.

5. The high efficiency lens cap locking device as claimed in claim 1, wherein: The outer sleeve (241), the inner sleeve (242), the middle shaft pressing block (243), the nut (244), the spring (245), the nut pressing ring (246) and the lens nut (4) are coaxially arranged, the inner sleeve (242) is sleeved on the outer sleeve (241) and is fixedly connected with the outer sleeve (241), and the height adjusting unit comprises a stopper.

6. The high efficiency lens cap locking device of claim 5, wherein: The height adjusting unit further comprises an adjusting cylinder (248), the adjusting cylinder (248) is sleeved on the stopper in a sliding mode along a first direction, and the stopper is a cylinder.

7. The high efficiency lens cap locking device of claim 6, wherein: A plurality of first waist-shaped holes parallel to the first direction are formed in the adjusting cylinder (248), and the adjusting cylinder (248) is connected with the stopper through screws penetrating the first waist-shaped holes.

8. The high efficiency lens cap locking device of claim 1, wherein: The first position detection unit (3) comprises two oppositely arranged sensing units, the sensing unit comprises a fixed seat (31) and a position sensor (32), the fixed seat (31) is connected with the rack (1), the position sensor (32) is connected with the fixed seat (31), and the two position sensors (32) are eccentrically arranged with the height adjusting unit.

9. The high efficiency lens cap locking device of claim 8, wherein: The two position sensors (32) of the first position detection unit (3) constitute a pair of optical fiber sensors.

10. The high efficiency lens cap locking device of claim 8, wherein: The fixed seat (31) is L-shaped, and a plurality of second waist-shaped holes and a plurality of third waist-shaped holes are respectively formed on two right-angled surfaces, and the second waist-shaped holes and the third waist-shaped holes are perpendicular to each other.

Images