A machine vision lens quick focusing locking mechanism

Abstract

The utility model discloses a kind of machine vision lens quick focusing locking mechanism, it is related to lens focusing locking appliance technical field, including main body lens barrel and the focusing lens embedded in main body lens barrel, supporting sleeve is sleeved with one side of main body lens barrel, installation sleeve is sleeved with the middle part of main body lens barrel, installation sleeve is equipped with the sleeved fixed component, four connecting blocks are equidistantly fixed on installation sleeve side wall, pressure locking piece for quick focusing and locking on connecting block, the utility model is provided with the setting of extrusion block, can be with extrusion piece sticking surface smooth, the transmission of force is uniform when extruding, avoid extrusion piece local deformation;The setting of rotary locking sleeve can provide locking power for pressure locking piece;The setting of compression spring can provide continuous downward extrusion force for extrusion block, ensure that extrusion piece and installation sleeve outer wall are stably stuck, solve the problem that secondary locking needs to be kept in extrusion state by continuous manual force, and locking force is easily weakened with hand fatigue.

Description

Technical Field

[0001] This utility model relates to the technical field of lens focusing and locking devices, and in particular to a fast focusing and locking mechanism for machine vision lenses. Background Technology

[0002] In the fast focusing locking mechanism of machine vision lens, the core requirement of the secondary locking is to limit the circumferential rotation of the mounting sleeve and form all-round protection in conjunction with the primary axial locking. However, the traditional secondary locking structure lacks stable automatic force application components and has long relied on manual intervention to maintain the locking state, which has become a key pain point restricting the reliability and ease of operation of the mechanism.

[0003] Traditional two-stage locking systems often employ a "manual bolt tightening" design. This requires operators to repeatedly tighten the bolts with tools, using the bolt ends to press against the outer wall of the mounting sleeve to achieve circumferential restriction. This method is not only cumbersome, but also requires continuous tightening of the bolts to maintain the locking effect. In scenarios where machine vision lenses frequently adjust focus, each unlocking and locking requires disassembling and reassembling the bolts, significantly extending operation time. More importantly, the bolt tightening force relies entirely on manual feel; loosening it too much can cause the mounting sleeve to rotate, while overtightening it may damage the outer wall of the mounting sleeve, ultimately causing lens angle shift and affecting imaging accuracy. Therefore, these problems need to be addressed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a fast focusing and locking mechanism for machine vision lenses.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a machine vision lens fast focusing and locking mechanism, comprising a main lens barrel and a focusing lens embedded in the main lens barrel, a supporting sleeve sleeved on one side of the main lens barrel, an mounting sleeve sleeved in the middle of the main lens barrel, a fixing component sleeved on the mounting sleeve, four connecting blocks equidistantly fixed to the side wall of the mounting sleeve, pressure locking plates on the connecting blocks for fast focusing and locking, and a rotating locking sleeve for the pressure locking plate screwed onto the outer wall of one end of the mounting sleeve.

[0006] Preferably, the fixing component includes a movable ring sleeved on the outer wall of the mounting sleeve. The movable ring has four sliding holes arranged in an axial array. A pull shaft is slidably disposed in the sliding holes. A pressing block is fixedly connected to the bottom of the pull shaft. A pressing sheet is attached to the side wall of the pressing block. One side of the pressing sheet is movably abutting against the periphery of the outer wall of the mounting sleeve.

[0007] Preferably, a compression spring is provided at the bottom of the pull shaft, one end of the compression spring is fixed to the extrusion block, the other end of the compression spring is fixed to the side wall of the sliding hole, and a manual pull cap is fixed to the top of the pull shaft.

[0008] Preferably, a semi-circular block is fixedly connected to the pressure locking plate, and a rotating pressure block is fixedly connected to the middle section of the rotating locking sleeve. The side wall of the rotating pressure block is provided with an arc groove that matches the semi-circular block, and the inner wall of the pressure locking plate is movably abutted against the main lens barrel through the rotating locking sleeve.

[0009] Preferably, the pressure locking plate is made of elastic metal material, and the inner wall of the pressure locking plate is bonded with a rubber buffer layer. The inner wall of the pressure locking plate is movably abutted against the main lens barrel by a rotating locking sleeve.

[0010] Preferably, the outer wall of the rotary locking sleeve is provided with a diamond-shaped anti-slip texture.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, the cooperation between the pull shaft and the extrusion block ensures a smooth contact surface with the extrusion sheet, uniform force transmission during extrusion, and avoids local deformation of the extrusion sheet; the cooperation between the rotating locking sleeve and the pressure locking plate provides locking power for the pressure locking plate, and the locking operation can be completed by a single person; the setting of the compression spring provides continuous downward extrusion force to the extrusion block, ensuring stable contact between the extrusion sheet and the outer wall of the mounting sleeve, solving the problem that secondary locking requires continuous manual force to maintain the extrusion state, and the locking force is easily weakened by hand fatigue. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0013] Figure 1 This is a schematic diagram of the overall first-view structure proposed in this utility model;

[0014] Figure 2 This is a schematic diagram of the internal second-view structure proposed in this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of some parts proposed in this utility model;

[0016] Figure 4 This is a schematic diagram of the fixing component structure proposed in this utility model.

[0017] The numbers in the diagram are: 1. Main lens barrel; 2. Focusing lens; 3. Rotary locking sleeve; 4. Support sleeve; 5. Pressure locking plate; 6. Connecting block; 7. Movable ring; 8. Manual pull cap; 9. Rotary pressure block; 10. Pull shaft; 11. Extrusion block; 12. Extrusion plate; 13. Compression spring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Example: See Figures 1 to 4 This utility model discloses a machine vision lens fast focusing and locking mechanism, including a main lens barrel 1 and a focusing lens 2 embedded in the main lens barrel 1. A support sleeve 4 is sleeved on one side of the main lens barrel 1. The support sleeve 4 helps to assist in positioning the connection position between the main lens barrel 1 and external equipment and improves the structural rigidity of the main lens barrel 1. An installation sleeve is sleeved in the middle of the main lens barrel 1. The installation sleeve is provided with a fixing component. Four connecting blocks 6 are fixedly fixed at equal intervals on the side wall of the installation sleeve. The connecting blocks 6 help to ensure that the pressure locking plate 5 and the installation sleeve maintain a fixed relative position, so that each pressure locking plate 5 is subjected to force synchronously and evenly to compress the main lens barrel 1. The pressure locking plate 5 on the connecting block 6 is used for locking after fast focusing. The pressure locking plate 5 helps to ensure a firm lock and avoids rigid compression damage to the lens barrel. A rotating locking sleeve 3 for the pressure locking plate 5 is screwed onto the outer wall of one end of the installation sleeve. The rotating locking sleeve 3 helps to quickly press the pressure locking plate 5 onto the main lens barrel 1 to achieve a stable lock and prevent the focusing lens 2 from shifting due to vibration or collision.

[0020] In this invention, the fixing component includes a movable ring 7 sleeved on the outer wall of the mounting sleeve. Four sliding holes are axially arrayed on the movable ring 7. A pull shaft 10 is slidably mounted within the sliding holes. A pressing block 11 is fixedly connected to the bottom of the pull shaft 10. A pressing plate 12 is attached to the side wall of the pressing block 11, and one side of the pressing plate 12 movably abuts against the periphery of the outer wall of the mounting sleeve. The movable ring 7 facilitates a stable sliding path for the pull shaft 10, preventing it from shifting or jamming, and ensuring that the pressing block 11 and the pressing plate 12 move synchronously and smoothly. A compression spring 13 is provided at the bottom of the pull shaft 10. One end of the compression spring 13 is fixedly connected to the pressing block 11, and the other end is fixedly connected to the side wall of the sliding hole. A manual pull cap 8 is fixedly connected to the top of the pull shaft 10. The compression spring 13 facilitates releasing the elastic force by releasing the manual pull cap 8, thus driving the pull shaft 10. 0. Reset, so that the squeezing block 11 is disengaged from the squeezing piece 12; a semi-circular block is fixedly connected to the pressure locking piece 5, and a rotating pressure block 9 is fixedly connected to the middle section of the rotating locking sleeve 3. The side wall of the rotating pressure block 9 is provided with an arc groove that matches the semi-circular block. The inner wall of the pressure locking piece 5 is movably abutted against the main lens barrel 1 through the rotating locking sleeve 3. The rotating pressure block 9 facilitates the smooth conversion of rotational motion into axial pressure, avoiding damage to the pressure locking piece 5 caused by sudden pressure changes. The pressure locking piece 5 is made of elastic metal material, and the inner wall of the pressure locking piece 5 is bonded with a rubber buffer layer. The inner wall of the pressure locking piece 5 is movably abutted against the main lens barrel 1 through the rotating locking sleeve 3. The pressure locking piece 5 is facilitating elastic deformation under the pressure of the rotating locking sleeve 3, tightly abutting against the outer wall of the main lens barrel 1. The outer wall of the rotating locking sleeve 3 is provided with a diamond-shaped anti-slip texture.

[0021] Working Principle: When using this utility model, the operator first uses the support sleeve 4 on one side of the main lens barrel 1 to stably connect the entire mechanism to the machine vision equipment. The support sleeve 4 provides a positioning reference for the mechanism, preventing the main lens barrel 1 from shifting during focusing. At this time, the mounting sleeve is fitted into the middle of the main lens barrel 1, and the connecting block 6 on its side wall and the pressure locking piece 5 are in a pre-loose state. The rotating locking sleeve 3 is not under pressure, and the inner wall of the pressure locking piece 5 is not tightly fitted with the main lens barrel 1. The main lens barrel 1 can slide freely axially, reserving space for subsequent focusing adjustment. At the same time, the fixed parts are in an initial standby state: the movable ring 7 is fitted into the outer wall of the mounting sleeve, and the manual pull cap 8 on the top of the pull shaft 10... When not under stress, the compression spring 13 remains in a naturally extended state. The pressing block 11 and the pressing plate 12 do not exert pressure on the mounting sleeve, ensuring that the mounting sleeve can be adjusted synchronously with the main lens barrel 1 without interfering with the focusing operation. Next, the focusing lens 2 is rapidly adjusted for focusing. The main lens barrel 1 moves the internal focusing lens 2 synchronously, changing the relative distance between the focusing lens 2 and the imaging sensor to achieve lens focusing adjustment. After focusing is completed, the first-stage locking is initiated: hold the rotating locking sleeve 3 and rotate it clockwise. The rotating locking sleeve 3 is threaded to the outer wall of the mounting sleeve and moves along the axis of the mounting sleeve towards the pressure locking plate 5. The rotating pressure block 9 inside the rotating locking sleeve 3 moves synchronously with it. As the rotating pressure block 9 rotates, the arc groove on its side wall precisely engages with the semi-arc block on the pressure locking plate 5. With the continuous pressure of the rotating pressure block 9, the pressure locking plate 5 bends and deforms towards the main lens barrel 1. Ultimately, the rubber buffer layer on the inner wall of the pressure locking plate 5 tightly abuts against the outer wall of the main lens barrel 1, achieving initial locking of the main lens barrel 1 through elastic pressure. The rubber buffer layer increases friction with the main lens barrel 1, improving locking stability, while also preventing direct metal contact that could scratch the outer wall of the main lens barrel 1. The elastic metal pressure locking plate 5 adapts to the shape of the main lens barrel 1 through its own deformation, ensuring even distribution of locking force and preventing excessive local pressure from damaging the lens barrel, thus further enhancing… To ensure locking reliability, the secondary auxiliary locking mechanism is activated: The operator pulls the manual nut 8 upwards, causing the pull shaft 10 to slide upwards along the sliding hole of the movable ring 7. The pressing block 11 at the bottom of the pull shaft 10 rises simultaneously, and the compression spring 13 is compressed and stores force. Then, the movable ring 7 is rotated so that the pressing plate 12 below the pressing block 11 is aligned with the preset positioning point on the outer wall of the mounting sleeve. The manual nut 8 is released, the compression spring 13 releases its elasticity, and pushes the pressing block 11 downwards. The side wall of the pressing block 11 presses the pressing plate 12, so that the pressing plate 12 fits tightly against the outer wall of the mounting sleeve, forming a double locking effect to ensure the stable position of the focusing lens 2. At this point, the use of the machine vision lens fast focusing locking mechanism is completed.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A machine vision lens fast focusing locking mechanism, comprising a main lens barrel (1) and a focusing lens (2) embedded in the main lens barrel (1), characterized in that: A support sleeve (4) is fitted onto one side of the main lens barrel (1), and an installation sleeve is fitted onto the middle of the main lens barrel (1). A fixing component is fitted onto the installation sleeve, and four connecting blocks (6) are fixedly connected at equal intervals to the side wall of the installation sleeve. A pressure locking plate (5) is used for locking after rapid focusing on the connecting block (6), and a rotating locking sleeve (3) for the pressure locking plate (5) is screwed onto the outer wall of one end of the installation sleeve.

2. The machine vision lens fast focusing locking mechanism according to claim 1, characterized in that: The fixing component includes a movable ring (7) sleeved on the outer wall of the mounting sleeve. Four sliding holes are axially arrayed on the movable ring (7). A pull shaft (10) is slidably disposed in the sliding holes. A pressing block (11) is fixedly connected to the bottom of the pull shaft (10). A pressing sheet (12) is attached to the side wall of the pressing block (11). One side of the pressing sheet (12) is movably abutted against the periphery of the outer wall of the mounting sleeve.

3. The machine vision lens fast focusing locking mechanism according to claim 2, characterized in that: The bottom of the pull shaft (10) is provided with a compression spring (13), one end of the compression spring (13) is fixed to the extrusion block (11), the other end of the compression spring (13) is fixed to the side wall of the sliding hole, and a manual pull cap (8) is fixed to the top of the pull shaft (10).

4. The machine vision lens fast focusing locking mechanism according to claim 1, characterized in that: A semi-circular block is fixedly connected to the pressure locking plate (5), and a rotating pressure block (9) is fixedly connected to the middle section of the rotating locking sleeve (3). The side wall of the rotating pressure block (9) is provided with an arc groove that matches the semi-circular block. The inner wall of the pressure locking plate (5) is movably abutted against the main lens barrel (1) through the rotating locking sleeve (3).

5. The machine vision lens fast focusing locking mechanism according to claim 4, characterized in that: The pressure locking plate (5) is made of elastic metal material, and the inner wall of the pressure locking plate (5) is bonded with a rubber buffer layer.

6. The machine vision lens fast focusing locking mechanism according to claim 1, characterized in that: The outer wall of the rotating locking sleeve (3) is provided with a diamond-shaped anti-slip texture.

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