Adaptive connection zoom device

Abstract

The invention provides a self-adaptive connection zoom device, which comprises a base, a lens module configured to adjust the focal length and a connecting structure configured to assemble a movable lens group on the base, and is characterized in that the lens module comprises a fixed lens group fixed on the base and the movable lens group capable of moving relative to the base; the connecting structure comprises a plurality of guide rods fixed on the base and a sliding frame which sleeves the guide rods and is configured to assemble the movable mirror group, the sliding frame comprises at least one first connecting mechanism which is in floating connection with the guide rods, the guide rod which is in floating connection with the sliding frame is a first guide rod, the first connecting mechanism comprises an opening part which is configured to sleeve the first guide rod, and a second connecting mechanism which is configured to sleeve the opening part; a floating piece configured to relatively fix the first connecting mechanism and the first guide rod in the preset direction is arranged on the periphery of the opening part, and the floating piece is at least partially arranged between the opening part and the first guide rod in the mode that the floating piece abuts against the first guide rod. According to the present disclosure, it is possible to provide an adaptively connected zoom device that improves reliability.

Description

Technical Field

[0001] The present disclosure relates to the field of intelligent manufacturing equipment industry, and in particular to an adaptively connected zoom device. Background Art

[0002] Laser trackers are high-precision 3D measurement systems widely used in large-scale assembly applications such as industrial manufacturing, aerospace, and automotive manufacturing. Based on laser ranging technology, they enable high-precision 3D measurement over a wide range. These systems are typically equipped with a camera to capture pose data of the object being measured, enabling precise positioning, real-time tracking, and high-precision measurement.

[0003] To accommodate measurement scenarios involving objects of varying distances and sizes, cameras typically feature a zoom function, achieved through multiple movable internal lens groups. The better the linearity of the lens group's movement, the higher the clarity of the captured image. Existing techniques typically improve this linearity by placing the lens groups on multiple guide rods.

[0004] However, due to factors such as insufficient processing precision, the position of the mounting holes on the lens group is difficult to align with the position of the guide rods. As a result, after the lens group is mounted on the guide rods, multiple guide rods will squeeze or pull the lens group, causing the lens group and the guide rods to get stuck and difficult to move. Summary of the Invention

[0005] The present disclosure is proposed in view of the above-mentioned state of the prior art, and its object is to provide a zoom device with adaptive connection that can improve reliability.

[0006] To this end, the present disclosure provides an adaptively connected zoom device, the zoom device comprising a base and a lens module configured to adjust the focal length, the lens module comprising a fixed lens group fixed to the base and a movable lens group movable relative to the base, the zoom device also comprising a connecting structure configured to assemble the movable lens group to the base, the connecting structure comprising a plurality of guide rods fixed to the base, and a slide frame which is sleeved on the plurality of guide rods and configured to assemble the movable lens group, the slide frame comprising at least one first connecting mechanism floatingly connected to the guide rods, the guide rod floatingly connected to the slide frame being a first guide rod, the first connecting mechanism comprising an opening portion configured to sleeve the first guide rod, a floating member configured to relatively fix the first connecting mechanism and the first guide rod along a preset direction being arranged around the opening portion, the floating member being at least partially arranged between the opening portion and the first guide rod in a manner of abutting the first guide rod.

[0007] In the present disclosure, the floating member abuts against the guide rod, which helps the guide rod guide the slide. At the same time, the floating member is at least partially arranged between the opening and the guide rod. The floating member can adapt to any position of the guide rod in the opening by floating. Therefore, when the guide rod exerts a guiding effect on the slide, the undesirable effect exerted by the guide rod on the slide can be reduced, thereby improving the reliability of the zoom device.

[0008] In addition, in the adaptively connected zoom device of the present disclosure, optionally, the first connecting mechanism includes a first channel and a second channel that extend through the opening, the first channel and the second channel being symmetrically arranged on either side of the opening along the preset direction, and the floating member abutting the first guide rod via the first channel and the second channel. In this case, the symmetrical arrangement of the first channel and the second channel on either side of the opening enables the abutting force applied by the floating member to the first guide rod to be collinear, thereby facilitating relative fixation of the first connecting mechanism and the first guide rod.

[0009] In addition, in the adaptively connected zoom device involved in the present disclosure, optionally, the floating member includes a first rolling post and a second rolling post configured to abut against the first guide rod and to roll relative to the first guide rod, and a first locking member configured to apply an action to the first rolling post along the preset direction and a second locking member configured to apply an action to the second rolling post along the preset direction, and the first locking member, the first rolling post, the second locking member, and the second rolling post are arranged in the first connecting mechanism in a manner of being embedded in the first connecting mechanism. In this case, compared to sliding friction, rolling friction can be generated by the first and second rolling posts abutting against the first guide rod and rolling relative to the first guide rod, thereby reducing the friction between the floating member and the first guide rod.

[0010] In addition, in the adaptively connected zoom device involved in the present disclosure, optionally, the floating member further includes a first support seat disposed between the first locking member and the first rolling post, and a second support seat disposed between the second locking member and the second rolling post, the first support seat having an arcuate groove that matches the outer contour of the first rolling post and abuts against the first rolling post, and the second support seat having an arcuate groove that matches the outer contour of the second rolling post and abuts against the second rolling post. In this case, since the first support seat and the second support seat respectively have arcuate grooves that match the first rolling post and the second rolling post, it is possible to suppress unwanted movement of the first rolling post and the second rolling post.

[0011] Additionally, in the adaptively connected zoom device of the present disclosure, the floating member may optionally include a first elastic member disposed between the first guide rod and the first locking member; and / or a second elastic member disposed between the first guide rod and the second locking member. In this case, by controlling the elastic deformation of the first elastic member and / or the second elastic member, the effect of the first locking member and / or the second locking member on the first guide rod can be controlled within a desired range.

[0012] Additionally, in the adaptively connected zoom device of the present disclosure, the first and second support bases may optionally be made of at least one of copper, cast iron, lead, and tin. In this case, since such materials easily generate powder during friction, this helps reduce frictional resistance between the first rolling post and the first support base, and between the second rolling post and the second support base.

[0013] In addition, in the adaptively connected zoom device of the present disclosure, optionally, the first connection mechanism further includes a first cover configured to close the gap of the opening, thereby reducing the possibility of components falling from the opening.

[0014] In addition, in the adaptively connected zoom device of the present disclosure, optionally, the opening is an annular structure with a gap, thereby facilitating the assembly of the first sliding connection member into the opening.

[0015] In addition, in the adaptively connected zoom device of the present disclosure, the floating member may optionally be disposed in the opening, and the floating member may include a first sliding connector that is sleeved with the first guide rod, and an elastic member disposed between the first sliding connector and the opening. In this case, the elastic deformation of the elastic member can help prevent excessive abutment force between the first sliding connector and the first guide rod.

[0016] In addition, the adaptively connected zoom device of the present disclosure may optionally further include a second guide rod rigidly connected to the slide, and the connection structure may further include a second sliding connector connecting the slide and the second guide rod, and a fixing member securing the second sliding connector to the slide. In this case, the slide is connected to the second guide rod via the second sliding connector, facilitating movement of the slide along the second guide rod. Furthermore, securing the slide and the second sliding connector via the fixing member can suppress relative movement between the slide and the second sliding connector, thereby improving the precision of control over the slide's movement.

[0017] According to the present disclosure, it is possible to provide a zoom device with an adaptive connection and improved reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present disclosure will now be explained in further detail, by way of example only, with reference to the accompanying drawings.

[0019] Figure 1 2 is a diagram showing an application scenario of the optical measuring instrument involved in the example of the present disclosure.

[0020] Figure 2A 2 is a schematic diagram showing the structure of a zoom device involved in an example of the present disclosure.

[0021] Figure 2B Schematic diagram showing the structure of the base involved in the example of the present disclosure.

[0022] Figure 2C 1 is a schematic diagram showing a movable lens group according to an example of the present disclosure mounted on a slide.

[0023] Figure 2D 1 is a schematic diagram showing that the slide according to the example of the present disclosure is sleeved on the guide rod.

[0024] Figure 2E Schematic diagram showing a first positioning hole and a second positioning hole involved in an example of the present disclosure.

[0025] Figure 3A It shows Figure 2D A magnified schematic diagram of area A in the middle.

[0026] Figure 3B It shows Figure 3A Cross-sectional view along line XX.

[0027] Figure 3C It shows Figure 3A Cross-sectional view along line YY.

[0028] Figure 3D Schematic diagram showing a first elastic member and a second elastic member involved in an example of the present disclosure.

[0029] Figure 3E 1 is a schematic structural diagram showing a second embodiment of the first connecting mechanism according to the present disclosure.

[0030] Figure 4 2 is a schematic diagram showing that the guide blocks involved in the example of the present disclosure are arranged in a diagonal direction.

[0031] Figure 5 FIG. 2 is a schematic diagram showing a center-symmetrical arrangement of two carriages according to an example of the present disclosure.

[0032] Figure 6 is an exploded view showing the carriage and transmission assembly involved in the example of the present disclosure.

[0033] Figure 7A2 is a schematic structural diagram showing a second embodiment of a transmission assembly according to an example of the present disclosure.

[0034] Figure 7B is a schematic diagram illustrating a second elastic element involved in an example of the present disclosure.

[0035] Figure 8A Schematic diagram showing the structure of the driving structure involved in the example of the present disclosure.

[0036] Figure 8B Schematic diagram showing a first bearing according to an example of the present disclosure.

[0037] Figure 8C Schematic diagram showing a second bearing according to an example of the present disclosure. DETAILED DESCRIPTION

[0038] The preferred embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. In the following description, identical components are assigned identical reference numerals, and duplicate descriptions are omitted. In addition, the accompanying drawings are merely schematic, and the proportions of the dimensions of the components and the shapes of the components may differ from the actual ones.

[0039] It should be noted that the terms "including" and "having" and any variations thereof in this disclosure, such as a process, method, system, product, or device that includes or has a series of steps or units, are not necessarily limited to those steps or units clearly listed, but may include or have other steps or units that are not clearly listed or are inherent to these processes, methods, products, or devices. In this document, relative position and relative direction terms such as "above", "below", "left", "right", "front", and "back" are used with reference to normal operating postures and should not be considered restrictive.

[0040] First, the relevant terms involved in this disclosure are introduced. "Control accuracy" can refer to the accuracy of controlling the movement of the movable mirror group to a predetermined position. The higher the control accuracy, the closer the position to which the movable mirror group moves is to the predetermined position. "Control accuracy" can also refer to the accuracy of controlling the movement of the movable mirror group to a predetermined distance. The higher the control accuracy, the closer the distance the movable mirror group moves is to the predetermined distance. "Floating connection" can refer to a dynamically adjustable connection. For example, a floating connection between a slide and a guide rod can mean that the relative position of the slide and the guide rod can be dynamically adjusted.

[0041] The zoom device disclosed herein can be used in optical measuring instruments. By precisely controlling the movement of a movable lens assembly to a predetermined position or distance, control accuracy is improved, thereby helping the optical measuring instrument accurately locate a target. In some examples, the optical measuring instrument disclosed herein may also be referred to as an optical measuring system, an optical tracking system, a laser tracker, or an optical measuring system with tracking and scanning capabilities. The zoom device disclosed herein may also be referred to as a zoom module, a zoom system, or a camera.

[0042] The zoom device involved in the examples of the present disclosure is described in detail below with reference to the accompanying drawings.

[0043] Figure 1 1 is a diagram showing an application scenario of the optical measuring instrument 100 involved in the example of the present disclosure.

[0044] For some examples, see Figure 1 , the optical measuring instrument 100 can measure the target 200. In some examples, the optical measuring instrument 100 can be used to emit a light beam toward the target 200. The target 200 can reflect the received light beam back to the optical measuring instrument 100. In some examples, the optical measuring instrument 100 can measure the target 200 based on the light beam reflected by the target 200.

[0045] In some examples, the optical measuring instrument 100 can measure the spatial coordinates and spatial posture of the target 200. In some examples, the optical measuring instrument 100 can also identify the target 200 based on the light beam reflected by the target 200. In some examples, the optical measuring instrument 100 can also track the target 200 based on the light beam reflected by the target 200. In some examples, the optical measuring instrument 100 can be a laser measuring instrument such as a laser tracker, a laser radar, or a total station.

[0046] For some examples, see Figure 1 The optical measuring instrument 100 may include a zoom device 10. In some examples, the zoom device 10 may be configured to obtain a spatial attitude of the target 200. In some examples, the zoom device 10 may obtain the spatial attitude of the target 200 by capturing an image of the target 200. This may facilitate the optical measuring instrument 100 in measuring the spatial attitude of the target 200.

[0047] In some examples, the zoom device 10 may have a zoom function. That is, the zoom device 10 can adjust its focal length. In some examples, the zoom device 10 can adjust its focal length to align with, zoom in on, or reduce the target 200. This helps the zoom device 10 obtain clear images of the target 200 in different measurement scenarios.

[0048] Figure 2A1 is a schematic structural diagram showing a zoom device 10 according to an example of the present disclosure. Figure 2B 2 is a schematic structural diagram showing the base 2 involved in the example of the present disclosure. Figure 2C 1 is a schematic diagram showing that the movable mirror group 11 according to the example of the present disclosure is mounted on the carriage 42 .

[0049] For some examples, see Figure 2A , the zoom device 10 may include a lens module 1. The lens module 1 may be configured to adjust the focal length.

[0050] As described above, the zoom device 10 can capture an image of the target 200. In some examples, the lens module 1 can also capture an image of the target 200. In some examples, the image captured by the lens module 1 can be an optical signal (hereinafter referred to as a first optical signal) containing spatial posture information of the target 200. This facilitates the acquisition of the spatial posture of the target 200.

[0051] For some examples, see Figure 2A The zoom device 10 may include a base 2. The base 2 may be configured to support the lens module 1. In some examples, the base 2 may be integrally formed. This can increase the rigidity of the base 2, thereby improving the stability of the zoom device 10. Furthermore, this can reduce assembly errors when assembling other components (e.g., the lens module 1) to the base 2.

[0052] In other examples, the base 2 may also be split, thereby facilitating the assembly of other components (such as the lens module 1 ) into the base 2 .

[0053] For some examples, see Figure 2B The base 2 may have a hollow portion 21. The hollow portion 21 may be configured to accommodate the lens module 1. In some examples, the base 2 may be a cylindrical structure. Thus, more sufficient movement space can be provided for the lens module 1.

[0054] For some examples, see Figure 2B The base 2 may include a first end 22 and a second end 23. The first end 22 may be located at the front end of the base 2. The second end 23 may be located at the rear end of the base 2. The first end 22 may be opposite to the second end 23.

[0055] For some examples, see Figure 2B The base 2 may further include a side portion 24. The side portion 24 may cooperate with the first end portion 22 and the second end portion 23 to form a hollow portion 21.

[0056] For some examples, see Figure 2BThe base 2 may have a first opening 25. The lens module 1 may be assembled into the interior of the base 2 through the first opening 25. In some examples, the first opening 25 may be located above the base 2. This facilitates assembly of the lens module 1.

[0057] In some examples, the base 2 may have a second opening. The second opening may be located below the base 2. In some examples, the lens module 1 may be assembled into the interior of the base 2 through the second opening. If the guide block 422 (described later) is long, the second opening below the base 2 may facilitate assembly of the lens module 1.

[0058] For some examples, see Figure 2B The base 2 may have a third opening 26. The third opening 26 may be located on a sidewall of the base 2 (i.e., the side portion 24). This facilitates debugging of the lens module 1 within the base 2. In some examples, the size of the third opening 26 may be determined based on factors such as the rigidity of the base 2 and the size of the components assembled therein.

[0059] In some examples, two opposing side walls of the base 2 may each be provided with a third opening 26. In this case, when there are multiple movable mirror assemblies 11 (described later), the third openings 26 on both sides can be used to assist in the installation of each movable mirror assembly 11 and the drive structure 6 (described later) corresponding to each movable mirror assembly 11, thereby reducing the difficulty of installation.

[0060] In some examples, the zoom device 10 may include a masking film configured to cover the third opening 26. Thus, after the lens module 1 is assembled and debugged, the influence of external factors (such as dust or water vapor) on the lens module 1 can be reduced.

[0061] In some examples, the zoom device 10 may include a first sensor 3 (see Figure 2A or Figure 2B The first sensor 3 can be configured to receive a signal (eg, a first light signal). This facilitates acquiring and transmitting an image of the target 200. In some examples, the first sensor 3 can be an optical sensor element.

[0062] For some examples, see Figure 2B , the first sensor 3 can be assembled on the base 2. The base 2 can also include a boss 27. The boss 27 can be formed at the rear end of the base 2. The first sensor 3 can be fixed to the boss 27. As a result, it is convenient for the first sensor 3 to receive signals from the lens module 1. In some examples, the interior of the boss 27 can be a through hollow structure, and the photosensitive coupling component on the first sensor 3 at the rear end can be arranged opposite to the lens module 1 arranged at the front end, thereby facilitating the reception of signals from the lens module 1.

[0063] In some examples, the lens module 1 may include a movable lens group 11 (see Figure 2C The movable lens group 11 can move relative to the base 2. This makes it easier for the lens module 1 to adjust the focal length.

[0064] In some examples, the number of movable mirror groups 11 may be at least one. For example, the number of movable mirror groups 11 may be one, two, three, four, or five. In some examples, when there is only one movable mirror group 11, the movable mirror group 11 can be moved relative to the base 2 to adjust the focal length. In some examples, when there are multiple movable mirror groups 11, one or more movable mirror groups 11 can be moved simultaneously relative to the base 2 to adjust the focal length.

[0065] For some examples, see Figure 2A The lens module 1 may include a fixed lens group 12. The fixed lens group 12 may be fixed to the base 2. In this embodiment, the fixed lens group 12 is fixed in position within the base 2, providing basic optical performance for the entire optical system and optimizing imaging quality to a certain extent, improving image clarity, contrast, and resolution. Furthermore, the fixed lens group 12 can work in conjunction with the movable lens group 11 to achieve excellent imaging effects at different focal lengths for the zoom device 10.

[0066] In some examples, there may be at least one fixed lens assembly 12. For example, there may be one fixed lens assembly 12, and one fixed lens assembly 12 may be fixed to the front or rear end of the base 2. For another example, there may be two fixed lens assemblies 12, and the optical axes of the two fixed lens assemblies 12 may coincide. The two fixed lens assemblies 12 may be fixed to the front and rear ends of the base 2, respectively, or both.

[0067] In the present disclosure, an example is described in which there are two fixed lens groups 12 , and the two fixed lens groups 12 are fixed to the front end and the rear end of the base 2 , respectively. However, this should not be construed as a limitation to the present disclosure.

[0068] In some examples, the front end of the base 2 has a through hole configured to assemble the fixed lens group 12. In some examples, the fixed lens group 12 can be assembled into the through hole at the front end of the base 2 and the inside of the boss 27 at the rear end of the base 2 respectively.

[0069] For some examples, see Figure 2A The zoom device 10 may include a connection structure 4. The connection structure 4 may be configured to assemble the movable lens group 11 to the base 2.

[0070] In some examples, the connecting structure 4 can connect the movable mirror group 11 and the base 2. In some examples, the movable mirror group 11 can be movably connected to the base 2 through the connecting structure 4. This facilitates the movement of the movable mirror group 11 relative to the base 2.

[0071] In some examples, the connection structure 4 may include a guide rod 41 (see Figure 2A In some examples, the guide rod 41 can be configured to guide the movable mirror assembly 11. This facilitates controlling the movable mirror assembly 11 to move along a predetermined path defined by the guide rod 41. In some examples, the predetermined path can refer to a desired movement path of the movable mirror assembly 11. The guide rod 41 can extend along the predetermined path. The movable mirror assembly 11 can move along the extension direction (also referred to as the axial direction) of the guide rod 41.

[0072] For some examples, see Figure 2A The guide rods 41 can be fixed to the base 2. In some examples, the guide rods 41 can be fixed to both ends of the base 2 along the length of the base 2. In some examples, the guide rods 41 can extend in the same direction as the length of the base 2. In other words, the guide rods 41 can extend parallel to the central axis of the base 2. This provides more room for movement for the movable mirror assembly 11.

[0073] In some examples, the connection structure 4 may include a carriage 42 (see Figure 2A ). The slide 42 can be configured to assemble (or carry) the lens module 1. Specifically, it can be configured to assemble (or carry) the movable lens group 11. In some examples, the movable lens group 11 can be fixed to the slide 42 (see Figure 2C ).

[0074] In some examples, the slide 42 can be accommodated in the hollow portion 21 , thereby providing the slide 42 with more sufficient movement space.

[0075] In some examples, the guide rod 41 can also be configured to position and guide a slide 42. The slide 42 can be connected to the guide rod 41 (e.g., sleeved on the guide rod 41). The movable lens assembly 11 can be connected to the guide rod 41 via the slide 42. In this case, compared to directly connecting the movable lens assembly 11 to the guide rod 41, connecting the slide 42 to the guide rod 41 can better protect the movable lens assembly 11 and improve the smoothness of the movement of the movable lens assembly 11. The smoother the movement of the movable lens assembly 11 (or the slide 42) along the guide rod 41, the lower the possibility of the movable lens assembly 11 (or the slide 42) getting stuck.

[0076] For some examples, see Figure 2C The slide 42 may have an annular bearing structure. For example, the annular bearing structure may be in the shape of a circular ring. This facilitates assembly of the movable lens group 11.

[0077] In some examples, there may be at least one guide rod 41. For example, there may be one, two, three, or four guide rods 41. One slide 42 may be mounted on at least one guide rod 41. In some examples, there may be at least one slide 42. For example, there may be one, two, three, or four slides 42. One slide 42 may carry at least one movable mirror group 11.

[0078] Figure 2D 1 is a schematic diagram showing that the slide 42 according to the example of the present disclosure is sleeved on the guide rod 41 .

[0079] For some examples, see Figure 2D , each slide 42 can be mounted on multiple guide rods 41. This can suppress the torsion of the slide 42, thereby helping to improve the consistency of the optical axis. It is understood that the number of guide rods 41 mounted on one slide 42 can be selected according to needs. For example, the number of guide rods 41 can be selected based on the requirements for the linearity of the movement of the slide 42 and the reliability of the zoom device 10, or can be selected based on the processing accuracy and assembly accuracy of each component (such as the slide 42 and the guide rods 41). Preferably, the number of guide rods 41 mounted on one slide 42 can be two, thereby reducing the difficulty of assembly while improving the linearity of the movement of the slide 42.

[0080] As mentioned above, the guide rod 41 can be fixed to the base 2 (see Figure 2A In some examples, the base 2 may have a guide rod positioning hole (i.e., the first positioning hole 221 and the second positioning hole 231 described later). The guide rod positioning hole may be configured to position the guide rod 41. In some examples, the guide rod positioning hole may also be configured to secure the guide rod 41. In some examples, the guide rod 41 may be assembled into the interior of the base 2 (i.e., the hollow portion 21) through the guide rod positioning hole.

[0081] In some examples, the position of the guide rod positioning hole can match the position of the fixed lens assembly 12. Matching can mean that when the guide rod 41 is fixed to the guide rod positioning hole and the slide 42 is mounted on the guide rod 41, the optical axis of the movable lens assembly 11 mounted on the slide 42 coincides with the optical axis of the fixed lens assembly 12 mounted on the base 2. This can help improve the consistency of the optical axes, thereby improving the clarity of the image (e.g., the image of the target 200) and the measurement accuracy.

[0082] In some examples, the number of guide rod positioning holes may be at least one. A guide rod 41 may be secured to at least one guide rod positioning hole. For example, only one end of a guide rod 41 may be secured to one guide rod positioning hole. For another example, both ends of a guide rod 41 may be secured to two guide rod positioning holes, respectively. This allows for more stable securing of the guide rod 41.

[0083] Figure 2E 2 is a schematic diagram illustrating a first positioning hole 221 and a second positioning hole 231 according to an example of the present disclosure.

[0084] In some examples, when there are multiple guide rod positioning holes, the multiple guide rod positioning holes can be arranged in pairs at the front and rear ends of the base 2. Figure 2B The first end portion 22 may have a first positioning hole 221. The second end portion 23 may have a second positioning hole 231. The two ends of the guide rod 41 may be fixed to the first positioning hole 221 and the second positioning hole 231, respectively. This helps the guide rod 41 to be parallel to the optical axis of the fixed lens assembly 12.

[0085] For some examples, see Figure 2B The first end portion 22 may further include a first functional hole 222. The first functional hole 222 may be connected to the first positioning hole 221. In some examples, a first fixing member 43a may be provided in the first functional hole 222 (see Figure 2E The first fixing member 43a can be configured to fix the guide rod 41. Thus, it is easy to fix the guide rod 41.

[0086] For some examples, see Figure 2E The first functional hole 222 may be orthogonal to the first positioning hole 221. Thus, the fixing effect of the first fixing member 43a can be improved.

[0087] For some examples, see Figure 2E The second end portion 23 may further include a second functional hole 232. The second functional hole 232 may be connected to the second positioning hole 231. In some examples, a second fixing member 43b may be disposed in the second functional hole 232. The second fixing member 43b may be configured to fix the guide rod 41. This facilitates fixing the guide rod 41.

[0088] For some examples, see Figure 2E The second functional hole 232 may be orthogonal to the second positioning hole 231. Thus, the fixing effect of the second fixing member 43b can be improved.

[0089] In some examples, the first fixing member 43a and the second fixing member 43b may be plug rods. The portion of the guide rod 41 fixed to the first positioning hole 221 and the second positioning hole 231 may have a plug hole. In this case, the first fixing member 43a and the second fixing member 43b can fix the guide rod 41 by being inserted into the plug hole.

[0090] In some examples, the first fixing member 43a and the second fixing member 43b may be jackscrews. The first functional hole 222 and the second functional hole 232 may be threaded holes. The first fixing member 43a and the second fixing member 43b may abut against the guide rod 41 to secure the guide rod 41. This facilitates securing the guide rod 41 to the first positioning hole 221 and the second positioning hole 231, and provides a relatively secure fixation of the guide rod 41. The following description uses the first fixing member 43a and the second fixing member 43b as jackscrews as an example.

[0091] For some examples, see Figure 2E The guide rod 41 may have a first notch 411a and a second notch 411b. When the guide rod 41 is fixed to the first positioning hole 221, the first notch 411a may be located in the first positioning hole 221. When the guide rod 41 is fixed to the second positioning hole 231, the second notch 411b may be located in the second positioning hole 231. This facilitates the fixing of the guide rod 41.

[0092] In other examples, the guide rod 41 may also have only the first notch 411 a or the second notch 411 b , thereby facilitating the processing of the guide rod 41 .

[0093] For some examples, see Figure 2E , the first notch 411a can be formed with a plane. The plane formed by the first notch 411a is the first plane 412a. The first fixing member 43a can abut against the first plane 412a. The second notch 411b can also be formed with a plane. The plane formed by the second notch 411b is the second plane 412b. The second fixing member 43b can abut against the second plane 412b. In this case, the contact between the first fixing member 43a and the first notch 411a, and the contact between the second fixing member 43b and the second notch 411b are both surface contacts. Compared with point contact, it can more stably fix the guide rod 41 and suppress the rotation of the guide rod 41, thereby improving the reliability of the fixation of the guide rod 41.

[0094] In other examples, the first functional hole 222, the second functional hole 232, the first fixing member 43a, the second fixing member 43b, the first notch 411a, and the second notch 411b may not be provided. In this case, the guide rod 41 may be fixed to the first positioning hole 221 and the second positioning hole 231 by means of glue dispensing, clamping, or welding.

[0095] In order to improve the linearity of the movement of the slide 42 and suppress the torsion of the slide 42, one slide 42 is usually mounted on at least two guide rods 41. In this case, due to the influence of factors such as processing and assembly errors, multiple guide rods 41 will usually over-position the slide 42, causing the slide 42 to get stuck or the friction between the slide 42 and the guide rods 41 is too large, which makes the smoothness of the movement of the slide 42 too low. Therefore, the present disclosure also proposes a floating connection structure between the slide 42 and the guide rods 41, which can reduce the influence of the over-positioning of the guide rods 41. The following description takes the example of one slide 42 being mounted on two guide rods 41, but this should not be understood as a limitation of the present disclosure. The present disclosure is also applicable to the scenario where one slide 42 is mounted on other numbers of guide rods 41.

[0096] In some examples, the carriage 42 may include a first connection mechanism 421 (see Figure 2D ). In some examples, the first connecting mechanism 421 can be connected to the guide rod 41. That is, the slide 42 can be connected to the guide rod 41 through the first connecting mechanism 421. In some examples, the slide 42 can be connected to the guide rod 41 in a floating manner. In some examples, the first connecting mechanism 421 can be connected to the guide rod 41 in a floating manner. In this case, the floating connection between the first connecting mechanism 421 and the guide rod 41 can enable the slide 42 to adapt to the position of the guide rod 41, reduce the possibility of the slide 42 and the guide rod 41 getting stuck, and thus improve the reliability of the zoom device 10. In the present disclosure, adaptive connection may refer to the slide 42 being connected to the guide rod 41 through the first connecting mechanism 421 in a manner that automatically adapts to the position of the guide rod 41.

[0097] Specifically, the slide 42 must abut against the guide rod 41 to be guided by it. Therefore, an appropriate abutment force can help the slide 42 maintain abutment against the guide rod 41 during movement and prevent the slide 42 from wobbling relative to the guide rod 41. However, when the abutment force is too great (e.g., due to over-positioning or deformation of the guide rod 41), friction between the slide 42 and the guide rod 41 increases, increasing the likelihood of the slide 42 and the guide rod 41 becoming stuck. The first connecting mechanism 421 allows the slide 42 to adapt to the position of the guide rod 41 while maintaining abutment against the guide rod 41 with an appropriate abutment force to eliminate any gap between the two. This reduces the likelihood of the slide 42 becoming stuck and allows the slide 42 to move under the guidance of the guide rod 41. For ease of description, the guide rod 41, to which the slide 42 is floatingly connected, is referred to as the first guide rod 41a.

[0098] For some examples, see Figure 2D The first connecting mechanism 421 can be sleeved on the first guide rod 41a. In some examples, the first connecting mechanism 421 can include an opening 4211. The opening 4211 can be configured to sleeve the first guide rod 41a. This facilitates the connection between the first connecting mechanism 421 and the first guide rod 41a.

[0099] As described above, the number of guide rods 41 provided on the same carriage 42 may be multiple. In some examples, the number of first connecting mechanisms 421 may be at least one. In some examples, the number of first connecting mechanisms 421 may be selected based on the number of guide rods 41 provided on the carriage 42. For example, when the number of guide rods 41 provided is two, the number of first connecting mechanisms 421 may be one (see Figure 2D For another example, when the number of the sleeved guide rods 41 is three, the number of the first connecting mechanisms 421 may be two.

[0100] In some examples, the zoom device 10 may include a floating member 5 (see Figure 2D ). In some examples, the floating member 5 can abut against the first guide rod 41a. For ease of understanding, Figure 2D Also shown are the parts of the floating member 5 and the first guide rod 41 a located in the first connecting mechanism 421 .

[0101] In some examples, the floating member 5 can float with the position of the first guide rod 41a within the opening 4211. That is, the floating member 5 can float to adapt to the position of the first guide rod 41a within the opening 4211. In this case, the floating member 5 floats and abuts the first guide rod 41a at any position within the opening 4211, causing the first connecting mechanism 421 to adapt to the position of the first guide rod 41a. This reduces the likelihood of the first guide rod 41a over-positioning the carriage 42 and causing it to become stuck, thereby improving the reliability of the zoom device 10. Furthermore, the gap between the carriage 42 and the first guide rod 41a is eliminated, facilitating the carriage 42's guidance by the first guide rod 41a while maintaining a floating connection with the first guide rod 41a.

[0102] It is understandable that the radial dimension of the opening 4211 is larger than the radial dimension of the first guide rod 41a. In this case, when the first guide rod 41a passes through the opening 4211, there is a gap between the first guide rod 41a and the opening 4211. Since the first guide rod 41a is fixed to the base 2 via the first positioning hole 221, that is, the position of the first guide rod 41a is limited by the first positioning hole 221, the larger radial dimension of the opening 4211 can provide a larger space to accommodate the first guide rod 41a, thereby reducing the requirements for the processing accuracy of the position of the first positioning hole 221. In addition, it is also possible to allow the actual position of the fixed first guide rod 41a in the opening 4211 to be offset to a certain extent compared to the predetermined position, thereby suppressing the first guide rod 41a from generating excessive abutment force due to excessive squeezing of the side wall of the opening 4211.

[0103] In order to improve the optical axis consistency of the lens module 1, the position of the slide 42 relative to the base 2 in the radial direction of the guide rod 41 should be fixed as much as possible, that is, the slide 42 should not shake or twist in the radial direction as much as possible. The floating part 5 abuts against the first guide rod 41a, which can eliminate the gap between the first guide rod 41a and the opening 4211, suppress the shaking of the slide 42 relative to the guide rod 41, improve the linearity of the movement of the slide 42 and improve the consistency of the optical axis.

[0104] In some examples, the floating member 5 may be disposed around the opening 4211. In some examples, the floating member 5 may be disposed in a floatable manner around the opening 4211. This facilitates the floating member 5 to abut against the first guide rod 41a in the opening 4211.

[0105] In some examples, the floating member 5 can be at least partially disposed between the opening 4211 and the first guide rod 41a. In some examples, the floating member 5 can be at least partially disposed between the opening 4211 and the first guide rod 41a so as to abut against the first guide rod 41a. This facilitates the floating connection between the first connecting mechanism 421 and the first guide rod 41a.

[0106] In some examples, the floating member 5 adapting to the position of the first guide rod 41a may mean that the floating member 5 abuts against the first guide rod 41a after moving in accordance with the position of the first guide rod 41a in the opening 4211. In different zoom devices 10, the position of the guide rod 41 in the opening 4211 may vary due to factors such as machining errors in the first positioning hole 221. The floating member 5 can maintain abutment with the guide rod 41 while moving different distances according to the position of the guide rod 41 in the opening 4211. This allows the floating member 5 to automatically adapt (i.e., self-adapt) to any position of the guide rod 41 in the opening 4211, allowing the guide rod 41 to guide the carriage 42.

[0107] In some examples, the floating member 5 may be further configured to relatively fix the first connecting mechanism 421 and the first guide rod 41 a , thereby preventing the sliding frame 42 from shaking relative to the first guide rod 41 a .

[0108] In some examples, the floating member 5 can be configured to relatively fix the first connecting mechanism 421 and the first guide rod 41a along a predetermined direction. In some examples, the floating member 5 can abut the first guide rod 41a in the predetermined direction. The predetermined direction can be radial to the first guide rod 41a. In this case, because the abutting force is directed radially from the first guide rod 41a, the position of the floating member 5 can be more adaptably adjusted, thereby more stably fixing the first connecting mechanism 421 and the first guide rod 41a relative to each other.

[0109] In this disclosure, Figure 2DThe first embodiment of the first connection mechanism 421 according to the present disclosure is also shown. The first embodiment of the first connection mechanism 421 will be described below.

[0110] In some examples, the first connection mechanism 421 may include a channel, and the floating member 5 may be disposed in the channel.

[0111] In some examples, the number of channels can be two. In some examples, see Figure 2D , the first connecting mechanism 421 may include a first channel 4213 and a second channel 4214 .

[0112] In some examples, the first channel 4213 can extend through the opening 4211. The second channel 4214 can extend through the opening 4211. In some examples, the first channel 4213 and the second channel 4214 can be arranged on either side of the opening 4211. In some examples, the first channel 4213 and the second channel 4214 can be symmetrically arranged on either side of the opening 4211. The floating member 5 can abut against the first guide rod 41a through the first channel 4213 and the second channel 4214. This allows the abutting force applied by the floating member 5 to the first guide rod 41a to be collinear, thereby facilitating relative fixation between the first connecting mechanism 421 and the first guide rod 41a.

[0113] In some examples, the first channel 4213 and the second channel 4214 can be symmetrically arranged along a predetermined direction on both sides of the opening 4211. In this case, by arranging the first channel 4213 and the second channel 4214 along the predetermined direction on both sides of the opening, it is possible to facilitate the floating member 5 to relatively fix the first connecting mechanism 421 and the first guide rod 41a along the predetermined direction.

[0114] In other examples, the number of channels may be one, three, or four. It will be appreciated that the number of channels can be selected based on the desired smoothness and linearity of the movement of the carriage 42. A greater number of channels restricts the freedom of the first guide rod 41a, improving the linearity of the movement of the carriage 42. However, this also increases the difficulty of assembling or adjusting the floating member 5 and can easily lead to the carriage 42 and the guide rod 41 becoming stuck.

[0115] Figure 3A It shows Figure 2D A magnified schematic diagram of area A in the middle. Figure 3B It shows Figure 3A Cross-sectional view along line XX. Figure 3C It shows Figure 3A In order to illustrate more clearly, Figure 3B and Figure 3C The cross-hatching of the components and structures in the floating member 5 is omitted.

[0116] In some examples, the floating member 5 may include a first rolling post 51a (see Figure 3A The first rolling post 51a can be configured to abut against the first guide rod 41a. The first rolling post 51a can also be configured to roll relative to the first guide rod 41a. In some examples, the floating member 5 can include a second rolling post 51b (see Figure 3A The second rolling post 51b can be configured to abut against the first guide rod 41a. Alternatively, the second rolling post 51b can be configured to roll relative to the first guide rod 41a. In this case, compared to sliding friction, the abutment and rolling of the first and second rolling posts 51a, 51b against the first guide rod 41a create rolling friction, thereby reducing friction between the floating member 5 and the first guide rod 41a.

[0117] For some examples, see Figure 3B , the first rolling cylinder 51a and the second rolling cylinder 51b may be at least partially located in the opening portion 4211. Thus, it is possible to facilitate the first rolling cylinder 51a and the second rolling cylinder 51b to abut against the first guide rod 41a.

[0118] For some examples, see Figure 3A The floating member 5 may include a first locking member 52a. The first locking member 52a may be configured to act on the first rolling post 51a. The floating member 5 may also include a second locking member 52b. The second locking member 52b may be configured to act on the second rolling post 51b. This helps the first and second rolling posts 51a, 51b maintain contact with the first guide rod 41a.

[0119] For some examples, see Figure 3B The first locking member 52a can be configured to exert an action on the first rolling post 51a in a predetermined direction. The second locking member 52b can be configured to exert an action on the second rolling post 51b in a predetermined direction. This facilitates the first rolling post 51a and the second rolling post 51b to abut against the first guide rod 41a in the predetermined direction.

[0120] In some examples, the first locking member 52a and the second locking member 52b may be jackscrews.

[0121] For some examples, see Figure 3B The first locking member 52a and the first rolling cylinder 51a can be provided in the first connecting mechanism 421 in a manner of being embedded in the first connecting mechanism 421. Thus, the first locking member 52a and the first rolling cylinder 51a can be fixed more stably.

[0122] For some examples, see Figure 3BThe second locking member 52b and the second rolling cylinder 51b can be provided in the first connecting mechanism 421 in a manner of being embedded in the first connecting mechanism 421. Thus, the second locking member 52b and the second rolling cylinder 51b can be fixed more stably.

[0123] For some examples, see Figure 3A The floating member 5 may include a first support seat 53a. The first support seat 53a may be disposed between the first locking member 52a and the first rolling cylinder 51a. Thus, the first rolling cylinder 51a can be supported.

[0124] For some examples, see Figure 3C The first support seat 53a may have an arcuate groove 54 (hereinafter referred to as the first arcuate groove 54a). The first arcuate groove 54a may abut the first rolling post 51a. In some examples, the first arcuate groove 54a may match the outer profile of the first rolling post 51a. Matching may mean that the first arcuate groove 54a and the first rolling post 51a have the same outer profile. This can better support the rotation of the first rolling post 51a within the first arcuate groove 54a and prevent the first rolling post 51a from sliding or shaking within the first arcuate groove 54a.

[0125] For some examples, see Figure 3A The floating member 5 may include a second support seat 53b. The second support seat 53b may be disposed between the second locking member 52b and the second rolling cylinder 51b, thereby supporting the second rolling cylinder 51b.

[0126] For some examples, see Figure 3C The second support seat 53b may have an arcuate groove 54 (hereinafter referred to as the second arcuate groove 54b). The second arcuate groove 54b may abut the second rolling post 51b. In some examples, the second arcuate groove 54b may match the outer profile of the second rolling post 51b. Matching may mean that the second arcuate groove 54b and the second rolling post 51b have the same outer profile. This can better support the rotation of the second rolling post 51b within the second arcuate groove 54b and prevent the second rolling post 51b from sliding or shaking within the second arcuate groove 54b.

[0127] In some examples, the material of the first support seat 53a and the second support seat 53b may include at least one of copper, cast iron, lead, and tin. In this case, since such materials easily generate powder during friction, it helps to reduce the frictional resistance between the first rolling cylinder 51a and the first support seat 53a, and between the second rolling cylinder 51b and the second support seat 53b.

[0128] For some examples, see Figure 3BThe floating member 5 may include an elastic member 55 (e.g., the first elastic member 55a and the second elastic member 55b described later). In this case, since the position of a rigid floating member 5 is generally difficult to adjust and the positional accuracy requirements for a rigid floating member 5 are also high, the elastic member 55, through elastic deformation, provides a certain buffer space for the position adjustment of the floating member 5. Therefore, compared with a rigid floating member 5, the elastic member 55 can effectively reduce the difficulty of adjusting the position of the floating member 5. In addition, the elastic member 55 can also provide adaptive compensation during use. For example, when some undesirable situations occur (such as interference caused by deformation of the first guide rod 41a or gap caused by wear at the contact point), the elastic member 55 can actively adapt through elastic deformation, thereby maintaining the contact force between the floating member 5 and the first guide rod 41a within the expected range, reducing the risk of the contact force increasing exponentially due to slight interference caused by the design and deformation of the first guide rod 41a, and also reducing the risk of loose contact with the first guide rod 41a due to gap caused by wear.

[0129] In some examples, the elastic member 55 may be an elastic ball. Thus, the elastic member 55 can be deformed when subjected to an action in any direction. In other examples, the elastic member 55 may also be a spring.

[0130] In some examples, the number of the elastic member 55 may be one, thereby simplifying the structure of the floating member 5 .

[0131] For some examples, see Figure 3C The floating member 5 (e.g., the elastic member 55) may include a first elastic member 55a. The first elastic member 55a may be disposed between the first guide rod 41a and the first locking member 52a. In this case, by controlling the elastic deformation of the first elastic member 55a, the force exerted by the first locking member 52a on the first guide rod 41a can be controlled within a desired range.

[0132] Figure 3D Schematic diagram showing the first elastic member 55a and the second elastic member 55b involved in the example of the present disclosure. Figure 3D The cross-hatching of the components and structures in the floating member 5 is omitted.

[0133] In some examples, the number of elastic members 55 may be multiple. For example, the number of elastic members 55 may be two, three, four, or five. Figure 3D , Figure 3D An example is shown in which the floating member 5 includes two elastic members 55 .

[0134] For some examples, see Figure 3DThe floating member 5 may further include a second elastic member 55b. The second elastic member 55b may be disposed between the first guide rod 41a and the second locking member 52b. In this case, by controlling the elastic deformation of the second elastic member 55b, the force applied by the second locking member 52b to the first guide rod 41a can be controlled within a desired range.

[0135] In some examples, the first elastic member 55a and the second elastic member 55b may be arranged on both sides of the first guide rod 41a along a preset direction, thereby enabling the floating member 5 to adapt to the deformation of the first guide rod 41a in both directions.

[0136] In other examples, the floating member 5 may also include only the second elastic member 55b.

[0137] For some examples, see Figure 3B The first channel 4213 may include a first through hole 42131. The first locking member 52a may be coupled to the first through hole 42131. In some examples, the coupling between the first locking member 52a and the first through hole 42131 may be a threaded coupling. This facilitates fixing and adjusting the first locking member 52a.

[0138] For some examples, see Figure 3B The first channel 4213 may include a first groove 42132. The first groove 42132 may be configured to accommodate the first rolling post 51a. In some examples, the first groove 42132 may be connected to the first through hole 42131. This facilitates the first locking member 52a to act on the first rolling post 51a.

[0139] For some examples, see Figure 3B The second channel 4214 may include a second through hole 42141. The second locking member 52b may be coupled to the second through hole 42141. In some examples, the coupling between the second locking member 52b and the second through hole 42141 may be a threaded coupling. This facilitates fixing and adjusting the second locking member 52b.

[0140] For some examples, see Figure 3B The second channel 4214 may include a second groove 42142. The second groove 42142 may be configured to accommodate the second rolling cylinder 51b. In some examples, the second groove 42142 may be connected to the second through hole 42141. This facilitates the second locking member 52b to act on the second rolling cylinder 51b.

[0141] In some examples, the first connecting mechanism 421 may further include a first cover plate 4215 (see Figure 3AThe first cover plate 4215 may be configured to close the gap of the opening 4211 . This reduces the possibility of components (eg, the first rolling post 51 a and the second rolling post 51 b ) falling out of the opening 4211 .

[0142] In some examples, the first cover plate 4215 may also be configured to close the first channel 4213 and the second channel 4214 (see Figure 3B ). This reduces the possibility of components (such as the first roller 51 a and the second roller 51 b ) in the first channel 4213 and the second channel 4214 falling off.

[0143] A second embodiment of the first connection mechanism 421 according to the present disclosure will be described below. Figure 3E is a schematic structural diagram illustrating a second embodiment of the first connecting mechanism 421 involved in the examples of the present disclosure. It should be noted that only the differences between the second embodiment and the first embodiment of the first connecting mechanism 421 are described in detail below. For identical structures or parts, reference can be made to the description of the first embodiment of the first connecting mechanism 421 and no further description will be given.

[0144] In the second embodiment of the first connecting mechanism 421, the first connecting mechanism 421 may not include the first channel 4213 and the second channel 4214. The floating member 5 may not include the first rolling post 51a, the second rolling post 51b, the first locking member 52a, the second locking member 52b, the first supporting seat 53a, the second supporting seat 53b, the arcuate groove 54, and the elastic member 55.

[0145] As described above, the opening 4211 can be configured to fit the first guide rod 41a, and the floating member 5 can float to adapt to the position of the first guide rod 41a in the opening 4211. In some examples, see Figure 3E The floating member 5 can be disposed in the opening 4211. In some examples, the floating member 5 can include a sliding connector. The sliding connector of the floating member 5 is a first sliding connector 56. The first sliding connector 56 can be sleeved onto the first guide rod 41a. This facilitates the movement of the slide 42. In some examples, the first sliding connector 56 can be a ball bearing.

[0146] In some examples, the floating member 5 may include an elastic backlash eliminating member. In some examples, the elastic backlash eliminating member may be equivalent to the elastic member 55 in the first embodiment of the first connecting mechanism 421. In some examples, the elastic backlash eliminating member may have the same function as the elastic member 55 in the first embodiment of the first connecting mechanism 421.

[0147] In some examples, an elastic backlash eliminater can be disposed between the first sliding connector 56 and the opening 4211. In this case, the elastic backlash eliminater can eliminate the gap between the first sliding connector 56 and the opening 4211, suppressing the wobble of the slide 42 relative to the guide rod 41, and improving the linearity of the slide 42's movement and the consistency of the optical axis. In this embodiment, the radial dimension of the opening 4211 is larger than the radial dimension of the first sliding connector 56. This provides a certain margin for error in the positioning of the first guide rod 41a, helps prevent the first sliding connector 56 from directly contacting the slide 42, reduces the risk of an interference fit between the first sliding connector 56 and the slide 42, and thus reduces the precision requirements for the machining position of the first positioning hole 221.

[0148] For some examples, see Figure 3E The opening 4211 can be an annular structure. Specifically, the carriage 42 can have a first connecting mechanism 421. The first connecting mechanism 421 can be a protrusion formed by protruding from the side wall of the carriage 42. The edge of the protrusion away from the center of the carriage 42 can be provided with an opening to form an annular structure, which serves as the opening 4211. In some examples, the annular structure can have a notch. The notch in the annular structure is referred to as the third notch 4212. This facilitates the assembly of the first sliding connector 56 into the opening 4211.

[0149] In some examples, the slide 42 may also be in rigid contact with the guide rod 41. In some examples, the zoom device 10 may include a second guide rod 41b (see Figure 2D or Figure 3E ). The second guide rod 41b can be in rigid contact with the carriage 42. That is, the guide rod 41 rigidly connected to the carriage 42 is the second guide rod 41b. Thus, the second guide rod 41b can easily support the carriage 42.

[0150] For some examples, see Figure 2D or Figure 3E , the first guide rod 41a and the second guide rod 41b can be parallel to each other. Thus, the possibility of the carriage 42 getting stuck can be reduced.

[0151] For some examples, see Figure 2D or Figure 3E The connection structure 4 may include a sliding connector. The sliding connector of the connection structure 4 is referred to as a second sliding connector 44. In some examples, the second sliding connector 44 may connect the carriage 42 to the second guide rod 41b. This facilitates movement of the carriage 42 along the second guide rod 41b. In some examples, the second sliding connector 44 may be a ball bearing or a linear bearing.

[0152] For some examples, see Figure 2DThe slide 42 may include a guide block 422. The guide block 422 may be mounted on the second guide rod 41b. That is, the slide 42 may be mounted on the second guide rod 41b via the guide block 422. In some examples, the guide block 422 may have a guide hole 4221. The second sliding connector 44 may be disposed in the guide hole 4221. For example, a sidewall of the guide block 422 may be formed with an opening for disposing a screw to secure the second sliding connector 44 in the guide hole 4221. Thus, after the slide 42 is mounted on the second guide rod 41b, friction between the guide block 422 and the guide rod 41 may be reduced, thereby improving the smoothness of the movement of the movable lens group 11.

[0153] In some examples, the guide block 422 can be elongated and cylindrical. The guide block 422 can be mounted on the sidewall of the annular support structure of the slide 42. In some examples, the axial length of the guide block 422 can be greater than its radial length. In this case, providing a guide block 422 with a larger aspect ratio can effectively improve the smoothness of the movement of the slide 42. It is understood that the longer the guide block 422 and the smaller the inner diameter of the guide hole 4221 (or the second sliding connector 44), the smoother the movement of the slide 42. However, since the length of the guide rod 41 is limited by the base 2, the longer the guide block 422 mounted on the guide rod 41 is not necessarily better. An excessively long guide block 422 can easily result in insufficient space for the slide 42 to move, thereby affecting the zoom effect.

[0154] For some examples, see Figure 2D or Figure 3E If the slide 42 is equipped with at least two guide rods 41, the slide 42 may include both a first connecting mechanism 421 and a guide block 422. The first connecting mechanism 421 and the guide block 422 may each be equipped with a guide rod 41 (for example, the first connecting mechanism 421 may be equipped with the first guide rod 41a, and the guide block 422 may be equipped with the second guide rod 41b). The guide block 422, through its rigid structure, cooperates with the guide rod 41 to provide a reference for positioning the slide 42, improving the positioning accuracy and linearity of the slide 42 during movement. The floating connection of the first connecting mechanism 421 allows it to better adapt to the position of the guide rod 41, reducing the risk of over-positioning and thus lowering the machining accuracy requirements for the first positioning hole 221 used to secure the guide rod 41.

[0155] It should be noted that the present disclosure does not impose excessive restrictions on the relative positions of the first connecting mechanism 421 and the guide block 422 in the slide 42, as long as they can facilitate the installation of the slide 42. Of course, the present disclosure is not limited thereto.

[0156] Figure 4 FIG. 4 is a schematic diagram showing that the guide blocks 422 according to the example of the present disclosure are arranged in a diagonal direction.

[0157] For some examples, see Figure 4 The slide 42 may not have the first connecting mechanism 421. The slide 42 may only be provided with a plurality of guide blocks 422, and the plurality of guide blocks 422 may be respectively sleeved with a plurality of guide rods 41. Thus, the installation of the slide 42 can be facilitated.

[0158] For some examples, see Figure 4 , different slides 42 can be respectively provided with different guide rods 41. Of course, the present disclosure is not limited thereto, and different slides 42 can also share one or more guide rods 41. For example, see Figure 2A The number of guide rods 41 is 3, and the two slides 42 can each be provided with a second guide rod 41 b, and the two slides 42 can share the first guide rod 41 a.

[0159] In the case of multiple slides 42, if the guide blocks 422 are too long or the distance between the slides 42 is too close, the guide block 422 of one slide 42 may collide with another slide 42, thereby hindering the movement of the slide 42. In some examples, the position of the guide blocks 422 of each slide 42, the position of the first connecting mechanism 421, or the annular supporting structure of the slide 42 can be adaptively adjusted to form a gap for the guide blocks 422 to move.

[0160] For some examples, see Figure 2C and Figure 4 The sidewall of the annular support structure of the slide 42 may be formed with a fourth notch 423. The fourth notch 423 may be configured to allow another guide block 422 (e.g., the guide block 422 of another adjacent slide 42) to pass through. The size of the fourth notch 423 may be larger than the size of the guide block 422. This reduces obstruction to the movement of the slide 42. For example, the positions of the guide blocks 422 of the two slides 42 may be different, and after the two slides 42 are installed, the positions of the two guide blocks 422 may be staggered. The guide block 422 of the slide 42 near the front end may pass through a structural notch (i.e., the fourth notch 423) of the slide 42 near the rear end where no other structure is provided.

[0161] Figure 4 Also shown is an embodiment of four guide rods 41. In some examples, see Figure 4 , a plurality of guide blocks 422 can be arranged diagonally on the carriage 42. Thus, the carriage 42 can be further prevented from twisting.

[0162] Figure 5 Schematic diagram showing the central symmetric arrangement of two carriages 42 involved in the example of the present disclosure. Figure 5 In the figures, some structures are simplified for a clearer illustration, but this should not be construed as a limitation to the present disclosure.

[0163] For some examples, see Figure 5 The guide blocks 422 of two adjacent slides 42 can be mounted on different guide rods 41. In some examples, the guide blocks 422 of two adjacent slides 42 can extend in opposite directions. In other words, the two adjacent slides 42 can be mounted on the guide rod 41 in a centrally symmetrical manner. This can reduce obstruction to the movement of the slides 42.

[0164] In some examples, a single slide 42 may include multiple guide blocks 422. Multiple guide blocks 422 of a single slide 42 may be mounted on multiple guide rods 41. For example, each guide block 422 may be mounted on a respective guide rod 41. This prevents the slide 42 from twisting, thereby improving the consistency of the optical axis and reducing the possibility of the slide 42 and guide rod 41 becoming stuck.

[0165] For some examples, see Figure 2D or Figure 3E The connection structure 4 may include a fixing member. The fixing member of the connection structure 4 is a third fixing member 43c. The third fixing member 43c can fix the second sliding connector 44 to the slide 42. This can suppress relative movement between the slide 42 and the second sliding connector 44, thereby improving the control accuracy of the movement of the slide 42.

[0166] In some examples, the guide block 422 may be provided with a mounting hole configured as a third fixing member 43c. This facilitates the third fixing member 43c in securing the second sliding connector 44 to the carriage 42. In some examples, the third fixing member 43c may be a jackscrew. In some examples, when the third fixing member 43c is a jackscrew, the mounting hole may be a threaded hole. Of course, the present disclosure is not limited to this. The second sliding connector 44 may also be engaged and fixed in the guide hole 4221 of the guide block 422.

[0167] In some examples, return to see Figure 2A The zoom device 10 may include a driving structure 6. In some examples, the driving structure 6 may be configured to drive the lens module 1 to move. In some examples, the driving structure 6 may be configured to drive the movable lens group 11 to move.

[0168] In some examples, the driving structure 6 may include a driving portion 61 (see Figure 2A In some examples, the driving unit 61 may be configured to provide a driving force. In some examples, the driving unit 61 may provide a driving force to the movable mirror group 11 (or the slide 42 ) to drive the movable mirror group 11 (or the slide 42 ) to move.

[0169] In some examples, there may be multiple drive units 61. In some examples, the number of drive units 61 may be equal to the number of slides 42. In some examples, one drive unit 61 may drive one slide 42. This facilitates precise zooming. In other examples, one drive unit 61 may drive multiple slides 42.

[0170] In some examples, the axial direction of the driving portion 61 may be parallel to the axial direction of the guide rod 41 , thereby facilitating the driving portion 61 to drive the movable mirror group 11 to move along the axial direction of the guide rod 41 .

[0171] In some examples, the drive structure 6 may include a transmission assembly 62 (see Figure 2A The transmission assembly 62 can be configured to transmit a driving force. The transmission assembly 62 can transmit the driving force provided by the driving unit 61 to the movable mirror group 11. Specifically, the transmission assembly 62 can move under the drive of the driving unit 61, thereby transmitting the driving force to the movable mirror group 11.

[0172] In some examples, return to see Figure 2D , the transmission assembly 62 can be connected to the slide 42. Thus, the transmission assembly 62 can drive the slide 42 to move under the action of the driving part 61.

[0173] In some examples, the transmission assembly 62 may be movably connected to the carriage 42. In this case, when the driving portion 61 generates an undesired motion and transmits it to the transmission assembly 62, the transmission assembly 62 moves relative to the carriage 42 to suppress the undesired motion from being transmitted to the carriage 42, thereby reducing the impact of the undesired motion on the carriage 42.

[0174] For example, when the drive unit 61 is a lead screw, the undesirable movement may refer to deformation or swinging of the lead screw during use. In this case, when the transmission assembly 62 is movably connected to the carriage 42, the movable connection provides the transmission assembly 62 with a certain amount of space to move relative to the carriage 42, which can effectively prevent the deformation or swinging of the lead screw from acting on the carriage 42 through the transmission assembly 62, causing the carriage 42 to become stuck or generating loud noise during movement.

[0175] In some examples, the transmission assembly 62 can be movably connected to the slide 42 so as to be movable along a predetermined plane. In some examples, the predetermined plane can be orthogonal to the axial direction of the guide rod 41. In this case, when undesirable motion generated by the driver 61 is transmitted to the transmission assembly 62, the transmission assembly 62 can reduce the impact of the undesirable motion generated by the driver 61 on the slide 42 by moving relative to the slide 42 along the predetermined plane, thereby improving the optical axis consistency of the lens module 1.

[0176] In other examples, the transmission assembly 62 may be fixedly connected to the carriage 42. For example, a protrusion on the side wall of the transmission assembly 62 forms a connecting piece, and a protrusion on the side wall of the annular supporting structure of the carriage 42 forms a connecting piece, and the two connecting pieces cooperate with each other to be fixedly connected by means of snap-fit, screws, or glue.

[0177] The following describes in detail the movable connection between the transmission assembly 62 and the slide 42 as an example. Figure 6 1 is an exploded view showing the carriage 42 and the transmission assembly 62 according to an example of the present disclosure.

[0178] For some examples, see Figure 6 The transmission assembly 62 may include a first connecting member 621. The carriage 42 may include a second connecting member 424. The first connecting member 621 may be connected to the second connecting member 424. Thus, the transmission assembly 62 may be easily connected to the carriage 42.

[0179] In some examples, one side of the first connecting member 621 may abut against the second connecting member 424. Specifically, the first connecting member 621 may be connected to the second connecting member 424 in a manner that abuts against the second connecting member 424 in the axial direction of the guide rod 41. In this way, the driving portion 61 can drive the carriage 42 to move along the guide rod 41.

[0180] For some examples, see Figure 6 The first connector 621 may have a connection hole 6211. The second connector 424 may include a connection post 4241. The connection post 4241 may mate with the connection hole 6211. In this case, the connection hole 6211 and the connection post 4241 mate with each other, thereby helping to maintain the connection between the first connector 621 and the second connector 424. In other words, the risk of the first connector 621 and the second connector 424 becoming detached can be reduced. In some examples, the connection hole 6211 may be sleeved over the connection post 4241.

[0181] In some examples, the connecting column 4241 may be parallel to the guide rod 41. In other words, the connecting column 4241 may extend along the axial direction of the guide rod 41. This facilitates the first connector 621 to rotate and slide relative to the second connector 424 within a predetermined plane.

[0182] In some examples, the size of the connection hole 6211 can match the size of the connection post 4241. In this case, by reducing the gap between the connection post 4241 and the connection hole 6211, it is possible to suppress the connection post 4241 from shaking significantly within the connection hole 6211, reduce noise, and reduce the possibility of damage to the connection post 4241. Matching can mean that the size of the connection hole 6211 is approximately the same as the size of the connection post 4241, and of course, it can also be larger than the size of the connection post 4241 in some directions.

[0183] For some examples, see Figure 6 , the connecting hole 6211 can be a waist-shaped hole. The length of the waist-shaped hole can be greater than the outer diameter of the connecting column 4241. The width of the waist-shaped hole can be configured to limit the first connecting member 621 from sliding along the width direction of the waist-shaped hole. For example, the diameter of the connecting column 4241 can be equal to the width of the waist-shaped hole (that is, the width of the waist-shaped hole is the same as the outer diameter of the connecting column 4241) or slightly smaller than the width of the waist-shaped hole. In this case, the width size of the waist-shaped hole can limit the movable space of the first connecting member 621 in the width direction and help the first connecting member 621 to slide along the length direction. When the driving part 61 produces an unexpected movement, the first connecting member 621 can rotate around the connecting column 4241 in a preset plane relative to the second connecting member 424 under the drive of the driving part 61, or slide in a preset plane along the length direction of the waist-shaped hole.

[0184] In other examples, the connection hole 6211 may also be a circular hole. The diameter of the connection hole 6211 may be slightly larger than the diameter of the connection column 4241 .

[0185] In some examples, the transmission assembly 62 may abut against the carriage 42 along the axial direction of the guide rod 41. Thus, the control accuracy of the movement of the carriage 42 in the axial direction of the guide rod 41 can be improved.

[0186] For some examples, see Figure 6 The second connector 424 may include a base plate 4242. In some examples, the base plate 4242 may be configured to abut against the transmission assembly 62. In this case, the surface contact between the base plate 4242 and the transmission assembly 62 may increase the contact area and improve the stability of the abutment compared to point contact.

[0187] In some examples, the first connecting member 621 may be plate-shaped, thereby increasing the contact area with the base plate 4242 , thereby allowing the transmission assembly 62 to contact the slide 42 more stably.

[0188] In some examples, the connecting pillars 4241 may be formed on the substrate 4242 (see Figure 6 When the transmission assembly 62 abuts against the base plate 4242 , the connection hole 6211 can be engaged with the connection column 4241 .

[0189] For some examples, see Figure 6The base plate 4242 may be formed with a connecting groove 4243. The connecting post 4241 may be formed on the bottom surface of the connecting groove 4243. When the connecting hole 6211 is engaged with the connecting post 4241, the first connecting member 621 may be located in the connecting groove 4243. This further reduces the possibility of the first connecting member 621 being separated from the second connecting member 424, thereby helping to maintain the abutting state between the first connecting member 621 and the second connecting member 424.

[0190] In some examples, when the first connector 621 is located in the connecting groove 4243, the first connector 621 may abut against the bottom surface of the connecting groove 4243. This facilitates positioning of the first connector 621 and the second connector 424 in the axial direction of the guide rod 41.

[0191] In some examples, the dimensions of the connecting groove 4243 can be larger than the dimensions of the portion of the first connecting member 621 within the connecting groove 4243. That is, a gap can exist between the first connecting member 621 disposed within the connecting groove 4243 and the sidewalls of the connecting groove 4243. This provides space for the first connecting member 621 to move, enabling a flexible connection between the first connecting member 621 and the first connecting member 621. In some examples, the depth of the connecting groove 4243 can be greater than the thickness of the portion of the first connecting member 621 within the connecting groove 4243.

[0192] For some examples, see Figure 6 A first elastic element 45 may be disposed on a side of the first connector 621 away from the base plate 4242. The first elastic element 45 may be configured to exert a first force on the first connector 621 to cause the transmission assembly 62 to abut against the base plate 4242. In this case, the first elastic element 45, by exerting force on the transmission assembly 62, can improve the stability of the abutment between the transmission assembly 62 and the base plate 4242. Furthermore, the elastic connection between the two allows for relative freedom of movement, which can buffer undesirable movement of the transmission assembly 62 (e.g., if the transmission assembly 62 is subjected to an impact), thereby reducing the possibility of the transmission assembly 62 and the carriage 42 becoming stuck.

[0193] In some examples, a cover plate may be provided on the side of the first connector 621 away from the substrate 4242. The cover plate provided on the side of the first connector 621 away from the substrate 4242 is referred to as the second cover plate 46 (see Figure 6 ). The second cover plate 46 can be configured to compress the first elastic element 45. That is, the first elastic element 45 can maintain an energized state. In this case, the second cover plate 46 can help maintain the first elastic element 45 in the energized state and can fix the position of the first elastic element 45.

[0194] In some examples, the first elastic element 45 may be disposed between the first connector 621 and the second cover plate 46 , thereby facilitating compression of the first elastic element 45 .

[0195] In some examples, the second cover plate 46 can be detachably fixed to the base plate 4242. This facilitates the arrangement of the first elastic element 45.

[0196] In some examples, the second cover plate 46 can be fixed to the base plate 4242 by screws. Specifically, the second cover plate 46 can have an opening, and the base plate 4242 can be formed with screw holes corresponding to the opening, so that the second cover plate 46 can be fixed by screws.

[0197] In some examples, the first elastic element 45 can be configured to exert a second action on the transmission assembly 62 (i.e., exert a force on the transmission assembly 62) so that the transmission assembly 62 abuts against (or is in close contact with) the driving portion 61. In this case, the radial gap between the transmission assembly 62 and the driving portion 61 can be reduced, thereby reducing the possibility of shaking of the transmission assembly 62 and improving the transmission accuracy of the transmission assembly 62.

[0198] In some examples, the first elastic element 45 can be configured to exert a third action on the slide 42 (i.e., exert a force on the slide 42) so that the slide 42 abuts against (or is in close contact with) the guide rod 41. In this case, the radial gap between the slide 42 and the guide rod 41 can be reduced, thereby reducing the possibility of the slide 42 shaking and improving the accuracy of the repeated positioning of the slide 42.

[0199] In some examples, the first elastic element 45 may be a torsion spring (see Figure 6 The two torsion arms of the torsion spring can be fixed to the first connecting member 621 and the second cover plate 46, respectively. In this case, the two torsion arms of the torsion spring can generate two opposing forces, one applied to the first connecting member 621 (i.e., the second force) and the other applied to the second cover plate 46 (i.e., the third force). Since the second cover plate 46 is fixed to the base plate 4242, the force applied to the second cover plate 46 can be transmitted to the base plate 4242, and therefore to the carriage 42.

[0200] In some examples, the first elastic element 45 may be sleeved on the connecting column 4241 , thereby facilitating the first elastic element 45 to exert an action on the first connecting member 621 and the second cover plate 46 .

[0201] In some examples, the second cover plate 46 may have a functional hole. Let the functional hole on the second cover plate 46 be the third functional hole 461 (see Figure 6 In some examples, the third functional hole 461 can be configured to adjust and fix the first elastic element 45 .

[0202] For some examples, see Figure 6 The number of the third functional holes 461 can be multiple. In this case, by fixing the first elastic element 45 to different third functional holes 461, the second and third functions can be easily adjusted (for example, the size and direction of the second and third functions can be adjusted).

[0203] In some examples, when the first elastic element 45 is a torsion spring, one torsion arm of the torsion spring can be fixed to the third functional hole 461. In some examples, the first elastic element 45 can be twisted to different degrees by fixing the torsion arms to different third functional holes 461, thereby adjusting the second and third functions.

[0204] For some examples, see Figure 6 The first connecting member 621 may be formed with a boss 622 configured to be abutted by the torsion arm of the torsion spring. Of course, the present disclosure is not limited thereto, and the torsion arm of the torsion spring may also directly abut against the body structure of the transmission assembly 62.

[0205] In some examples, return to see Figure 2A , the transmission assembly 62 can be coupled with the driving portion 61. Thus, the driving force can be easily transmitted.

[0206] In some examples, the transmission assembly 62 may be threadedly coupled to the driving portion 61. This can improve the control accuracy of the movement of the slide 42.

[0207] In some examples, the transmission assembly 62 can be made of a metal material. In some examples, a dust cover can be provided below the driving portion 61. The dust cover can have an arc-shaped cross-section. In this case, since the transmission assembly 62 generates powder during use, the dust cover can isolate the powder and reduce its impact on other components.

[0208] In some examples, the driving portion 61 may be a lead screw. The transmission assembly 62 may be a nut that cooperates with the lead screw. In this case, the transmission accuracy can be improved by the lead screw transmission.

[0209] Figure 2DA first embodiment of the transmission assembly 62 is shown. In some examples, the driving portion 61 may be a ball screw. Balls may be provided in the transmission assembly 62. In some examples, when the driving portion 61 is a ball screw, the transmission assembly 62 may be a nut with balls. In this case, it is convenient to reduce the gap between the transmission assembly 62 and the driving portion 61 by adjusting the size of the balls. In addition, the friction coefficient and noise between the transmission assembly 62 and the driving portion 61 can be reduced, and the possibility of self-locking of adjacent slides 42 after a collision can be reduced. Specifically, there is rolling friction between the nut, the balls and the screw, and through the interference fit of the three, the rigid components produce slight deformation (that is, elastic deformation is formed at the microscopic level), thereby reducing the gap between the transmission assembly 62 and the driving portion 61.

[0210] Figure 7A 1 is a schematic structural diagram showing a second embodiment of the transmission assembly 62 according to the present disclosure. Figure 7B : is a schematic diagram showing the second elastic element 624 involved in the example of the present disclosure. Figure 7A In the figure, the structure of the transmission assembly 62 is simplified for a clearer illustration, but this should not be understood as a limitation to the present disclosure.

[0211] Figure 7A and Figure 7B FIG2 shows a second embodiment of the transmission assembly 62. In some examples, the driving portion 61 may also be a different type of screw other than a ball screw, such as a trapezoidal screw. In some examples, the transmission assembly 62 may include a first transmission element 623 (see FIG2 ). Figure 7A or Figure 7B The first transmission element 623 can be configured to transmit a driving force. In some examples, the first transmission element 623 can be connected to the carriage 42. In some examples, the first transmission element 623 can be threadedly coupled to the driving portion 61. Thus, the first transmission element 623 can facilitate the driving portion 61 to drive the carriage 42.

[0212] In some examples, the transmission assembly 62 may further include a second elastic element 624 (see Figure 7B In some examples, the second elastic element 624 can remain in an energy storage state. In this case, the first transmission element 623 can be axially pressed against the driving portion 61 under the action of the second elastic element 624, reducing the gap between the first transmission element 623 and the driving portion 61, thereby improving control accuracy.

[0213] In some examples, the energy storage state may refer to a state in which the second elastic element 624 can release energy. For example, the second elastic element 624 may deform to accumulate elastic potential energy. In some examples, one end of the second elastic element 624 may abut against the first transmission element 623. The other end of the second elastic element 624 may abut against the second transmission element 625 (described later) or the base 2. This facilitates maintaining the energy storage state of the second elastic element 624.

[0214] For some examples, see Figure 7B The transmission assembly 62 may further include a second transmission element 625. The second transmission element 625 may be threadedly coupled to the driving portion 61. In some examples, a second elastic element 624 may be disposed between the first transmission element 623 and the second transmission element 625. That is, one end of the second elastic element 624 may abut against the first transmission element 623, and the other end may abut against the second transmission element 625. In this case, the second elastic element 624 acts to axially press the second transmission element 625 against the driving portion 61, thereby reducing the axial clearance between the second transmission element 625 and the driving portion 61, thereby improving control accuracy.

[0215] For some examples, see Figure 7B , the first transmission element 623 and the second transmission element 625 can be separate. In this case, because the forces exerted by the second elastic element 624 on the first transmission element 623 and the second transmission element 625 are in opposite directions, the split design facilitates relative movement of the first and second transmission elements 623 and 625 compared to a one-piece structure. Furthermore, it helps prevent the forces exerted by the second elastic element 624 on the first and second transmission elements 623 and 625 from canceling each other out. If the first and second transmission elements 623 and 625 were one piece, the two forces exerted by the second elastic element 624 would cancel each other out, making it difficult to eliminate the gap between the first and second transmission elements 623 and 625 and the drive unit 61.

[0216] In some examples, the second transmission element 625 can remain relatively stationary relative to the first transmission element 623. In this case, the distance between the first transmission element 623 and the second transmission element 625 remains unchanged, that is, the magnitude of the force exerted by the second elastic element 624 remains unchanged, which can help the first transmission element 623 and the second transmission element 625 maintain relative axial compression with the driving portion 61.

[0217] For some examples, see Figure 7A or Figure 7BThe first transmission element 623 may have a first engagement feature 6231. The second transmission element 625 may have a second engagement feature 6251. In some examples, the first engagement feature 6231 may be mated with the second engagement feature 6251 in a hermaphroditic manner. In this case, the hermaphroditic manner of the first engagement feature 6231 and the second engagement feature 6251 can help prevent relative rotation between the first transmission element 623 and the second transmission element 625.

[0218] Specifically, since the coupling between the first transmission element 623 and the second transmission element 625 and the driving part 61 is a threaded coupling, the axial movement of the first transmission element 623 and the second transmission element 625 along the driving part 61 needs to be achieved by rotating relative to the driving part 61. Therefore, when the relative rotation of the first transmission element 623 and the second transmission element 625 is suppressed, the first transmission element 623 and the second transmission element 625 can be kept in synchronous motion, and the distance between the two remains unchanged, which helps the second elastic element 624 to maintain an energy storage state so as to continuously apply a force to the first transmission element 623 and the second transmission element 625; and when the first transmission element 623 and the second transmission element 625 move relative to each other, the distance between the first transmission element 623 and the second transmission element 625 changes (for example, moves away from each other), which may cause the second elastic element 624 to no longer maintain an energy storage state, that is, no longer apply a force to the first transmission element 623 and the second transmission element 625. Through the cooperation between the first engagement feature 6231 and the second engagement feature 6251, the first transmission element 623 and the second transmission element 625 can be kept relatively stationary.

[0219] For some examples, see Figure 7A or Figure 7B At least a portion of the first transmission element 623 may be embedded in the second transmission element 625 (which may also be understood as at least a portion of the second transmission element 625 being embedded in the first transmission element 623). In some examples, the first engagement feature 6231 and the second engagement feature 6251 may be a protrusion and groove structure with complementary shapes.

[0220] In some examples, the driving portion 61 may be fixed to the base 2 (see Figure 2A In some examples, the base 2 may have a drive unit positioning hole (i.e., the third positioning hole 223 and the fourth positioning hole 233 described later). The drive unit positioning hole can be configured to position the drive unit 61. In some examples, the drive unit positioning hole can also be configured to secure the drive unit 61. In some examples, the drive unit 61 can be assembled within the interior of the base 2 (i.e., the hollow portion 21) through the drive unit positioning hole. This facilitates the drive unit 61 to drive the carriage 42.

[0221] In some examples, the number of drive unit positioning holes may be at least one. Each drive unit 61 may be fixed to at least one drive unit positioning hole. For example, each drive unit 61 may be fixed to one or two drive unit positioning holes. Preferably, each drive unit 61 may be fixed to two drive unit positioning holes at both ends. This improves the stability of the fixing of the drive unit 61.

[0222] In some examples, when there are multiple drive unit positioning holes, the multiple drive unit positioning holes can be arranged in pairs at the front and rear ends of the base 2. Specifically, the first end 22 can have a third positioning hole 223. The second end 23 can have a fourth positioning hole 233 (see Figure 2B The ends of the drive unit 61 can be fixed to the third positioning hole 223 and the fourth positioning hole 233, respectively. The drive unit 61 is connected to the base 2 in such a manner that it is positioned in the third positioning hole 223 and the fourth positioning hole 233. In this case, the provision of the third positioning hole 223 and the fourth positioning hole 233 facilitates the positioning of the drive unit 61. In addition, it helps to align the drive unit 61 with the optical axis of the lens module 1, thereby driving the slide 42 to move along the optical axis.

[0223] Figure 8A Schematic diagram showing the structure of the driving structure 6 involved in the example of the present disclosure. Figure 8B is a schematic diagram showing a first bearing 63 a according to an example of the present disclosure. Figure 8C is a schematic diagram showing the second bearing 63 b according to an example of the present disclosure. Figure 8A For a clearer illustration, the driving structure 6 is simplified, but this should not be construed as a limitation to the present disclosure.

[0224] In some examples, the driving portion 61 may include a first threaded portion 611 (see Figure 8A The transmission assembly 62 can be threadedly coupled to the first threaded portion 611 . In some examples, the transmission assembly 62 can move on the first threaded portion 611 . In some examples, the driving force generated by the driving portion 61 can be transmitted to the transmission assembly 62 via the first threaded portion 611 .

[0225] In some examples, a bearing 63 may be provided at the end of the driving portion 61. In some examples, the driving portion 61 may include a fixing portion 612 (see Figure 8A The fixing portion 612 can be configured to accommodate a bearing 63. Specifically, the bearing 63 can be disposed on the fixing portion 612. The fixing portion 612 can be connected to the first threaded portion 611. In some examples, the radial dimension of the fixing portion 612 is smaller than the radial dimension of the first threaded portion 611. In this case, the bearing 63 disposed on the fixing portion 612 can abut against the end surface of the first threaded portion 611, thereby facilitating the positioning of the bearing 63 in the driving portion 61.

[0226] In some examples, the bearing 63 can be disposed in the drive unit positioning hole. In some examples, the drive unit 61 can be positioned in the drive unit positioning hole via the bearing 63. This allows the drive unit 61 to be positioned without affecting its rotation. It should be noted that positioning the drive unit 61 in the drive unit positioning hole may mean that the position of the drive unit 61 in the drive unit positioning hole is limited in the axial direction, while the drive unit 61 can still rotate in the circumferential direction.

[0227] In some examples, the bearing 63 at the front end (i.e., the first bearing 63a described later) can be a ball bearing. The bearing 63 at the rear end (i.e., the second bearing 63b described later) can be a double angular contact ball bearing. This can improve the rigidity of the bearing 63 and the precision of the fit between the bearing 63 and the drive unit 61.

[0228] In some examples, the drive unit 61 can be secured to the base 2 via a bearing 63. Specifically, the outer ring of the bearing 63 can be secured to the drive unit positioning hole (e.g., by snapping). The fixing portion 612 can be provided on the inner ring of the bearing 63. The dimensions of the inner ring of the bearing 63 match those of the fixing portion 612. This helps define the position of the drive unit 61 and facilitates its rotation.

[0229] In some examples, the drive structure 6 may also include a threaded plug 64 (see Figure 8A A threaded plug 64 can be disposed in the third positioning hole 223. In some examples, the threaded plug 64 can abut against the bearing 63. This abutment between the threaded plug 64 and the bearing 63 can secure the bearing 63. In this case, securing the bearing 63 with the threaded plug 64 facilitates securing the drive unit 61. Furthermore, by adjusting the position of the threaded plug 64, the axial force applied to the bearing 63 can be adjusted, thereby reducing the possibility of over-tightening the bearing 63.

[0230] In other examples, the threaded plug 64 may also be disposed in the fourth positioning hole 233 or in both the third positioning hole 223 and the fourth positioning hole 233 .

[0231] In some examples, the threaded plug 64 may only abut the outer ring of the bearing 63. Thus, by applying axial force to the outer ring of the bearing 63 through the threaded plug 64, the axial clearance between the outer and inner rings of the bearing 63 can be reduced, thereby suppressing undesirable movement of the drive unit 61 (e.g., axial play). Furthermore, because the threaded plug 64 only abuts the outer ring of the bearing 63 and does not contact the inner ring, rotation of the inner ring relative to the outer ring can be facilitated.

[0232] For some examples, see Figure 8B and Figure 8CThe inner diameter of bearing 63 can be smaller than the size of first threaded portion 611. The inner diameter of the outer ring of bearing 63 can be larger than the size of first threaded portion 611. In this case, the end surface of first threaded portion 611 can abut against the inner ring of bearing 63 without abutting against the outer ring of bearing 63. Therefore, when the inner ring of bearing 63 is positioned using first threaded portion 611, axial force is applied to the outer ring of bearing 63 through threaded plug 64, causing the inner and outer rings of bearing 63 to be axially compressed relative to each other, thereby reducing the axial clearance between the outer and inner rings of bearing 63.

[0233] For some examples, see Figure 8A , bearings 63 can be provided at both ends of the first threaded portion 611. This further facilitates the rotation of the driving portion 61. For ease of description below, the fixing portion 612 at the front end of the driving portion 61 is referred to as the first fixing portion 612a, the fixing portion 612 at the rear end of the driving portion 61 is referred to as the second fixing portion 612b, the bearing 63 provided on the first fixing portion 612a is referred to as the first bearing 63a, and the bearing 63 provided on the second fixing portion 612b is referred to as the second bearing 63b.

[0234] In some examples, the threaded plug 64 can be fixed to the third positioning hole 223 at the front end (see Figure 8B The threaded plug 64 can abut the outer ring of the first bearing 63a. When the outer ring of the first bearing 63a abuts the threaded plug 64, the inner ring of the first bearing 63a can abut the end surface of the front end of the first threaded portion 611. In some examples, the outer ring of the second bearing 63b can be fixed to the fourth positioning hole 233. In this case, the end surface of the first threaded portion 611 abuts the inner rings of the first bearing 63a and the second bearing 63b, respectively. The threaded plug 64 applies force to the outer ring of the first bearing 63a, and the force is transmitted to the inner ring of the second bearing 63b via the inner ring of the first bearing 63a and the first threaded portion 611. During this process, the outer and inner rings of the first bearing 63a and the second bearing 63b are axially compressed relative to each other, thereby suppressing undesirable movement of the drive unit 61.

[0235] In some examples, the drive structure 6 may include an elastic connector 65 (see Figure 8A or Figure 8BIn some examples, the drive unit positioning hole can be formed as an open hole. The elastic connector 65 can be disposed between the first bearing 63a and the threaded plug 64 (i.e., the first bearing 63a does not directly contact the threaded plug 64). In some examples, the elastic connector 65 can maintain an energized state. In some examples, the elastic connector 65, while maintaining an energized state, can abut against the outer ring of the first bearing 63a. In this case, the elastic connector 65, while maintaining an energized state, continuously applies force to the outer ring of the first bearing 63a, thereby reducing the axial clearance between the outer and inner rings of the first bearing 63a. Furthermore, by controlling the deformation of the elastic connector 65, the magnitude of the force applied by the elastic connector 65 can be easily controlled, thereby reducing the possibility of a sudden increase in resistance or even seizure of the outer and inner rings of the bearing 63 due to excessive force. Furthermore, because the action exerted by the elastic connector 65 is elastic, it can buffer unintended movement of the drive unit 61, thereby reducing the possibility of damage to the drive unit 61.

[0236] In other examples, the drive structure 6 may not include the threaded plug 64. In some examples, the drive unit positioning hole may be formed as a blind hole. The elastic connector 65 may be disposed between the first bearing 63a and the drive unit positioning hole. This facilitates the elastic connector 65 to maintain an energy storage state.

[0237] In other examples, the drive structure 6 may include a cylindrical block. The cylindrical block may replace the elastic connector 65 and be disposed between the first bearing 63a and the threaded plug 64. In this case, compared to the elastic connector 65, the cylindrical block is more rigid and less susceptible to deformation, thereby suppressing shaking of the drive unit 61.

[0238] For some examples, see Figure 8A or Figure 8C The driving structure 6 may include a fixing sleeve 66 . In some examples, the fixing sleeve 66 may be configured to fix the second bearing 63 b to the fourth positioning hole 233 .

[0239] In some examples, the fixing sleeve 66 can be fixed to the fourth positioning hole 233. This facilitates fixing the second bearing 63b. In some examples, the fixing sleeve 66 can be threadedly coupled to the fourth positioning hole 233.

[0240] For some examples, see Figure 8CThe fourth positioning hole 233 may include a positioning block 2331. The positioning block 2331 may be formed by a protrusion from the edge of the fourth positioning hole 233 near the first threaded portion 611. The inner diameter of the positioning block 2331 is larger than the outer diameter of the first threaded portion 611 and smaller than the inner diameter of the outer ring of the second bearing 63b. In this case, one side of the outer ring of the second bearing 63b can abut against the positioning block 2331, and the other side of the outer ring of the second bearing 63b can abut against the fixing sleeve 66. This allows the outer ring of the second bearing 63b to be fixed between the positioning block 2331 and the fixing sleeve 66, thereby securing the position of the second bearing 63b.

[0241] In some examples, the fixing sleeve 66 may abut against the second bearing 63b. Specifically, the fixing sleeve 66 may only abut against the outer ring of the second bearing 63b. This facilitates relative movement between the outer ring and the inner ring of the second bearing 63b.

[0242] For some examples, see Figure 8A or Figure 8C The drive structure 6 may include a fixing nut 67. The fixing nut 67 may be configured to position the drive unit 61. Specifically, the fixing nut 67 may position the drive unit 61 on the inner ring of the second bearing 63b, and the second bearing 63b may be fixed to the fourth positioning hole 233. Thus, the fixing nut 67 can position the drive unit 61.

[0243] For some examples, see Figure 8A or Figure 8C The drive unit 61 may include a second threaded portion 613. The second threaded portion 613 may be connected to the second fixing portion 612b. In some examples, the second fixing portion 612b may be located between the first threaded portion 611 and the second threaded portion 613. This facilitates positioning of the inner race of the second bearing 63b by the fixing nut 67. Specifically, one side of the inner race of the second bearing 63b may abut against the end surface of the first threaded portion 611, and the other side may abut against the fixing nut 67, thereby positioning the inner race of the second bearing 63b between the first threaded portion 611 and the fixing nut 67. The relative positions of the first threaded portion 611, the fixing nut 67, and the inner race of the second bearing 63b are fixed, thereby preventing the second fixing portion 612b of the drive unit 61 from disengaging from the second bearing 63b.

[0244] In some examples, the fixing nut 67 may be threadably coupled to the second threaded portion 613 .

[0245] For some examples, see Figure 8A or Figure 8C The fixing nut 67 may be disposed in the fixing sleeve 66. In some examples, the fixing nut 67 may not contact the fixing sleeve 66. Thus, the driving portion 61 can be easily rotated.

[0246] For some examples, see Figure 8A or Figure 8C The size of the second threaded portion 613 can be smaller than or equal to the size of the second fixing portion 612b. Thus, it is easy to arrange the second bearing 63b on the second fixing portion 612b.

[0247] For some examples, see Figure 8A The driving structure 6 may further include a power source 68. The power source 68 may be configured to provide driving force for the driving portion 61. The power source 68 may be a motor. For example, the power source 68 may be a brushed reduction motor.

[0248] In some examples, the power source 68 may be disposed outside the base 2 , thereby reducing the impact on the lens module 1 inside the base 2 .

[0249] In some examples, the power source 68 can be connected to the driving portion 61. In some examples, when the power source 68 is disposed outside the base 2, the driving portion 61 can pass through the base 2 to connect to the power source 68.

[0250] For some examples, see Figure 8A The driving structure 6 may further include a coupling 69. The coupling 69 may connect the power source 68 and the driving unit 61. Thus, the shaking of the driving unit 61 can be reduced.

[0251] In some examples, return to see Figure 2B The zoom device 10 may include a measuring structure 7. In some examples, the measuring structure 7 may be configured to measure the distance moved by the carriage 42 (or the movable lens group 11).

[0252] In some examples, the measurement structure 7 may include a grating encoder 71 (see Figure 2B In some examples, the grating encoder 71 may include a grating scale 711 (see Figure 2C ) and readhead 712 (see Figure 2B ). The grating scale 711 can be mounted on the carriage 42. The reading head 712 can be mounted on the base 2. This facilitates measurement of the distance the carriage 42 moves relative to the base 2. It is understood that the reading head 712 can be positioned opposite the grating scale 711, with a one-to-one correspondence. The base 2 is provided with an opening at a position opposite the grating scale 711. This facilitates the placement and operation of the reading head 712.

[0253] In some examples, each slide 42 may be provided with a grating ruler 711. In some examples, the grating ruler 711 may be fixed to the slide 42 by dispensing glue. For example, see Figure 2CThe grating ruler 711 can be set on the guide block 422. The side wall of the guide block 422 can be formed with a glue dispensing port. Therefore, when the grating ruler 711 is attached to the side wall of the guide block 422, the grating ruler 711 can be fixed by glue dispensing through the glue dispensing port.

[0254] In some examples, the measurement structure 7 may include a second sensor 72 (see Figure 2B The second sensor 72 can be configured to sense the position of the carriage 42 and generate a trigger signal when the carriage 42 moves to the zero position. In this case, the trigger signal can be used to detect that the carriage 42 is at the zero position. The zero position can serve as a reference point for the movement of the carriage 42, and the position of the carriage 42 after movement can be determined based on this reference point and the movement distance of the carriage 42.

[0255] It is understood that the zero position needs to be marked each time the zoom device 10 is initialized or reset. In this case, the second sensor 72 can accurately determine the zero position, improving the repeatability of the zero position determined each time. In other words, the zero position determined each time is initialized or reset is kept at the same position as much as possible.

[0256] In some examples, a second sensor 72 may be provided corresponding to each slide 42. Thus, the position of each slide 42 can be accurately located to achieve precise zooming.

[0257] In some examples, second sensor 72 may be a position sensor.

[0258] In some examples, the second sensor 72 may be disposed at the front end or the rear end (ie, the first end 22 or the second end 23) of the base 2. For example, see Figure 2B The second sensor 72 can be disposed on the upper side wall of the rear end (i.e., the second end 23) of the base 2. This facilitates sensing that the slide 42 is at the zero position.

[0259] In other examples, the second sensor 72 may also be disposed at both the front and rear ends of the base 2 .

[0260] In some examples, the second sensor 72 may be a non-contact sensor, thereby reducing the impact on the movement of the carriage 42 .

[0261] In some examples, the non-contact sensor may be a photoelectric sensor. The photoelectric sensor may include a transmitter and a receiver. The transmitter may generate a transmission signal, and the receiver may receive the transmission signal. In some examples, the carriage 42 may have a baffle 425 (see FIG. Figure 2C or Figure 6The second sensor 72 can be positioned to match the movement path of the baffle 425. When the carriage 42 moves to a certain position, the baffle 425 can enter between the transmitter and receiver, blocking the transmitted signal. If the receiver does not receive the transmitted signal, the photoelectric sensor can generate a trigger signal (i.e., the baffle 425 triggers the photoelectric sensor). Therefore, the generation of the trigger signal can facilitate determination of whether the carriage 42 is currently at the zero position.

[0262] In some examples, when the second sensor 72 is disposed on the upper sidewall of the second end portion 23, the baffle 425 may be disposed at an end of the guide block 422 close to the second end portion 23. This facilitates the cooperation between the second sensor 72 and the baffle 425.

[0263] In other examples, the second sensor 72 may also be a contact sensor. The contact sensor may include a first contact element and a second contact element. The first contact element and the second contact element may be disposed on the carriage 42 and the base 2, respectively. In some examples, when the carriage 42 moves to the zero position, the first contact element may contact the second contact element. In some examples, when the first contact element and the second contact element contact, the contact sensor may generate a trigger signal. Thus, whether the carriage 42 is at the zero position can be easily determined based on whether the trigger signal is generated.

[0264] In the present disclosure, the floating member 5 abuts against the guide rod 41, which can help the guide rod 41 guide the slide 42. At the same time, the floating member 5 is at least partially arranged between the opening 4211 and the guide rod 41. The floating member 5 can adapt to any position of the guide rod 41 in the opening 4211 by floating. Therefore, when the guide rod 41 applies a guiding effect to the slide 42, the undesirable effect of the guide rod 41 on the slide 42 can be reduced, thereby improving the reliability of the zoom device 10.

[0265] In summary, according to the present disclosure, it is possible to provide a zoom device 10 with an adaptive connection and improved reliability.

[0266] Although the present disclosure has been described in detail above with reference to the accompanying drawings and examples, it will be understood that the above description does not limit the present disclosure in any form. Those skilled in the art may modify and change the present disclosure as needed without departing from the spirit and scope of the present disclosure, and such modifications and changes all fall within the scope of the present disclosure.

Claims

1. An adaptively connected zoom device, comprising a base and a lens module configured to adjust focal length, wherein the lens module comprises a fixed lens group fixed to the base and a movable lens group movable relative to the base, characterized in that: The zoom device also includes a connecting structure configured to assemble the movable lens group to the base, the connecting structure includes a plurality of guide rods fixed to the base, and a slide mounted on the plurality of guide rods and configured to assemble the movable lens group, the slide includes at least one first connecting mechanism floatingly connected to the guide rods, the guide rod floatingly connected to the slide is a first guide rod, the first connecting mechanism includes an opening portion configured to be mounted on the first guide rod, a floating member configured to relatively fix the first connecting mechanism and the first guide rod along a preset direction is arranged around the opening portion, and the floating member is at least partially arranged between the opening portion and the first guide rod in a manner of abutting the first guide rod.

2. The adaptively connected zoom device according to claim 1, characterized in that The first connecting mechanism includes a first channel and a second channel that pass through the opening portion. The first channel and the second channel are symmetrically arranged on both sides of the opening portion along the preset direction. The floating member abuts against the first guide rod through the first channel and the second channel.

3. The adaptively connected zoom device according to claim 2, characterized in that: The floating member includes a first rolling column and a second rolling column configured to abut against the first guide rod and to roll relative to the first guide rod, and a first locking member configured to act on the first rolling column along the preset direction and a second locking member configured to act on the second rolling column along the preset direction. The first locking member, the first rolling column, the second locking member, and the second rolling column are arranged in the first connecting mechanism in a manner of being embedded in the first connecting mechanism.

4. The adaptively connected zoom device according to claim 3, characterized in that: The floating member also includes a first support seat arranged between the first locking member and the first rolling column, and a second support seat arranged between the second locking member and the second rolling column. The first support seat has an arc groove that matches the outer contour of the first rolling column and abuts against the first rolling column, and the second support seat has an arc groove that matches the outer contour of the second rolling column and abuts against the second rolling column.

5. The adaptively connected zoom device according to claim 3, characterized in that: The floating member includes a first elastic member arranged between the first guide rod and the first locking member; and / or a second elastic member arranged between the first guide rod and the second locking member.

6. The adaptively connected zoom device according to claim 4, characterized in that: The material of the first support base and the second support base includes at least one of copper, cast iron, lead and tin.

7. The adaptively connected zoom device according to claim 6, characterized in that: The first connecting mechanism further includes a first cover plate configured to close a gap of the opening.

8. The adaptively connected zoom device according to claim 1, characterized in that: The opening portion is in a ring-shaped structure with a gap.

9. The adaptively connected zoom device according to claim 8, characterized in that: The floating member is arranged in the opening portion, and the floating member includes a first sliding connection member sleeved with the first guide rod, and an elastic member arranged between the first sliding connection member and the opening portion.

10. The adaptively connected zoom device according to claim 1, characterized in that: It also includes a second guide rod rigidly connected to the slide, and the connection structure also includes a second sliding connection member connecting the slide and the second guide rod, and a fixing member fixing the second sliding connection member to the slide.

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