Knob structure and lens parameter adjusting device

Abstract

The utility model discloses a knob structure and a lens parameter adjusting device, and belongs to the field of shooting auxiliary equipment. Comprising a main body and a knob structure, the rotating assembly comprises a rotating part, an adjusting part and a rotating shaft, and the rotating part is rotationally connected with the fixing assembly through the rotating shaft; the damping assembly comprises a pressing and holding part and a damping part, the damping part is arranged between the fixing assembly and the pressing and holding part, and the pressing and holding part is rotationally arranged on the rotating shaft and can abut against the damping part; the pressing and holding piece can axially move relative to the rotating shaft during rotation, and the adjusting piece is arranged on the pressing and holding piece; the adjusting piece can drive the pressing and holding piece to rotate under rotation of external force so that the pressing and holding piece can axially move relative to the rotating shaft. The damping size of the knob structure can be changed according to different rotation angles, and the knob structure has excellent adjustability, so that the lens parameter adjusting device can meet the damping operation hand feeling requirements of different users.

Description

Technical Field

[0001] The utility model belongs to the field of shooting auxiliary equipment, and particularly relates to a knob structure and a lens parameter adjusting device. Background Technique

[0002] When shooting, when a user uses a camera to shoot, different lens parameters are usually required for different compositions, such as zoom, focus, aperture, etc. Therefore, the lens needs to be rotated to adjust the lens so as to capture the picture. To facilitate lens adjustment, parameter adjustment devices such as follow focusers have emerged on the market at present. They usually include a main body and a handwheel. The main body is communicatively connected to the handwheel. The user can hold the main body with one hand and adjust the handwheel with the other hand, rotate the handwheel to a certain angle, and transmit the angle data to the main body, so as to adjust the lens parameters. Although the existing follow focusers can realize the adjustment of lens parameters, they are slightly lacking in providing corresponding operating feeling feedback to the user, such as damping operating feel. Therefore, usually, damping grease or damping oil can be provided between the rotating part and the fixed part of the handwheel, so that there is a damping effect between the rotating part and the fixed part of the handwheel. However, in this way, although there is a damping effect between the rotating part and the fixed part, the adjustability of the damping size is lacking, so it is difficult to meet the damping operating feel requirements of different users. Summary of the Utility Model

[0003] To solve the above problems, the primary object of the utility model is to provide a knob structure whose damping size can vary according to different rotation angles and has excellent adjustability;

[0004] Another object of the utility model is to provide a lens parameter adjusting device that can meet the damping operating feel requirements of different users.

[0005] To achieve the above object, the technical solution of the utility model is as follows:

[0006] The utility model provides a knob structure, including:

[0007] A fixed component;

[0008] A rotating component, including a rotating part 、 An adjusting part and a rotating shaft, and the rotating part is rotatably connected to the fixed component through the rotating shaft;

[0009] The damping assembly includes a pressing member and a damping member. The damping member is located between the fixed assembly and the pressing member. The pressing member is rotatably arranged on the rotating shaft and can abut against the damping member. The pressing member can axially move relative to the rotating shaft during rotation. The adjusting member is arranged on the pressing member. Under the rotation of an external force, the adjusting member can drive the pressing member to rotate, so that the pressing member can axially move relative to the rotating shaft, abut against the damping member, and change the contact area between the damping member and the fixed assembly.

[0010] Further, the damping member includes a damping portion and a transmission portion. The damping portion is arranged between the transmission portion and the fixed assembly. The rotating member is fixedly connected to the rotating shaft. One side of the transmission portion can abut against the pressing member, and at least one elastic member is arranged between the other side and the damping portion. The axial movement of the pressing member can press the transmission portion, so that the transmission portion presses the elastic member, and thus presses the damping portion towards the fixed assembly.

[0011] Or,

[0012] The damping member includes a damping portion and a transmission portion. The damping portion is arranged between the transmission portion and the fixed assembly. The rotating member is fixedly connected to the rotating shaft. The transmission portion is located between the damping portion and the pressing member and can respectively abut against the damping portion and the pressing member. The axial movement of the pressing member can press the transmission portion, so that the transmission portion presses the damping portion towards the fixed assembly.

[0013] Further, the rotating member is provided with a through hole, and the transmission portion can pass through the through hole, and the transmission portion is located between the damping portion and the pressing member.

[0014] Further, the rotating member includes a mounting portion and a plurality of limiting portions. The plurality of limiting portions extend towards the rotating shaft to connect the outer wall of the mounting portion. The rotating shaft is fixedly arranged through the mounting portion. The transmission portion includes a plurality of first limiting grooves, and the plurality of limiting portions are arranged in one-to-one correspondence with the plurality of first limiting grooves, and each limiting portion can be accommodated in the corresponding first limiting groove.

[0015] Further, the rotating member includes a plurality of protrusions, and the damping portion includes a second limiting groove. The protrusions are accommodated in the second limiting groove, so that the damping portion can rotate along with the rotating member.

[0016] Further, the adjusting member includes an adjusting knob and a first connecting member, the rotating member has a receiving groove on a side facing away from the fixed component, the adjusting knob is received in the receiving groove, the first connecting member is fixedly connected to the adjusting knob, the first connecting member and the pressing member are matched in shape, rotating the adjusting knob can drive the first connecting member to rotate, and rotating the first connecting member can drive the pressing member to rotate.

[0017] Furthermore, one of the first connecting member and the rotating member on the opposite side is equipped with a dial bead, and the other is provided with a plurality of dial limit grooves adapted to the round end of the dial bead, and rotating the adjusting knob can cause the dial bead to rotate from one of the dial limit grooves to the other of the dial limit grooves.

[0018] Further, the rotating member includes a first rotating member and a second rotating member, the second rotating member is rotatably arranged on the fixed assembly through a rotating shaft, the first rotating member is fixedly connected to the second rotating member, the accommodating groove is arranged on the first rotating member, and a mounting hole is opened at the bottom of the accommodating groove; the adjusting knob includes a hand-twisting portion and a connecting portion, the first connecting member includes a protruding portion and an annular portion, the hand-twisting portion is connected to the connecting portion, the protruding portion passes through the mounting hole and is fixedly connected to the connecting portion, the protruding portion is arranged to match the shape of the holding member, the annular portion is arranged on the outer side of the protruding portion, and the bead is installed on the annular portion.

[0019] Further, the second rotating member includes a first rotating part and a second rotating part, the first rotating part is fixedly connected to the second rotating part, the second rotating part is fixedly connected to the first rotating member, and the second rotating part is fixedly connected to the rotating shaft; a movable groove is provided between the first rotating part and the second rotating part, and the end of the damping member away from the rotating shaft is provided in the movable groove, the first rotating part, the damping part and the second rotating part are radially limited in the rotating shaft, and the damping part can be in the movable groove and can move in the axial direction of the rotating shaft relative to the first rotating part and the second rotating part.

[0020] The utility model also provides a lens parameter adjustment device, including a main body and the above-mentioned knob structure, wherein the side of the fixed component facing away from the rotating member is connected to the main body, the side of the fixed component facing the main body is provided with a first communication module, and the side of the main body facing the fixed component is provided with a second communication module, and the first communication module and the second communication module can be electrically connected.

[0021] The beneficial effect of the present application is that, compared with the prior art, the damping size of the knob structure can be changed according to different rotation angles, and has excellent adjustability, so that the lens parameter adjustment device can meet the damping operation feel requirements of different users. Brief Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of a follow-focus device.

[0023] Figure 2 It is a sectional view of the follow-focus device.

[0024] Figure 3 It is a schematic structural diagram of the main body from the first perspective.

[0025] Figure 4 It is a schematic structural diagram of the main body from the second perspective.

[0026] Figure 5 It is a schematic structural diagram of the knob structure.

[0027] Figure 6 It is an exploded view of the knob structure without a rotation gear adjustment component.

[0028] Figure 7 It is an exploded view of the second rotating part, the rotating shaft, the damping part, the transmission part, and the third rotating shell.

[0029] Figure 8 It is an exploded view of the first connecting piece, the pressing piece, and the gasket.

[0030] Figure 9 It is a schematic structural diagram of the assembled state of the damping part and the third rotating shell.

[0031] Figure 10 It is a schematic structural diagram of the assembled state of the damping part and the third rotating shell in another embodiment.

[0032] Figure 11 It is a sectional view of the knob structure in another embodiment.

[0033] Figure 12 It is a sectional view of the knob structure with an elastic member.

[0034] Figure 13 It is a schematic structural diagram of the assembled state of the rotation gear adjustment component and the adjustment piece.

[0035] Figure 14 It is a schematic structural diagram of the rotation gear adjustment component.

[0036] Description of reference numerals: 100, follow focus device; 1, knob structure; 11, first communication module; 111, circuit board; 112, first communication terminal; 12, rotating assembly; 121, rotating shaft; 122, magnet; 123, rotating member; 1231, through hole; 1232, mounting portion; 1233, limiting portion; 1234, receiving groove; 1235, mounting hole; 124, adjusting member; 1241, adjusting knob; 12411, hand twist portion; 12412, connecting member Connecting part; 1242, first connecting member; 12421, protruding part; 12422, annular part; 12423, positioning hole; 125, dial ball; 126, dial limit groove; 127, first rotating member; 128, second rotating member; 1281, first rotating part; 12811, first rotating shell; 12812, second rotating shell; 12813, third rotating shell; 12814, first rotating limit protrusion; 1282, second rotating part; 1283, protrusion; 129, movable groove; 13, fixing assembly; 131, fixing plate; 1311, boss; 132, bearing; 133, bottom plate; 14, damping assembly; 141, holding member; 1411, positioning protrusion; 1412, holding platform; 1413, step surface; 1414, internal threaded hole; 142, damping member; 1421, damping part; 14211, damping support arm; 1422, transmission part; 1423, first limiting groove; 1424, spring 1425, second limit slot; 143, gasket; 15, rotation gear adjustment assembly; 151, adjustment dial; 152, movable part; 153, gear limit switch; 154, toggle protrusion; 155, first card slot; 156, second card slot; 157, second rotation limit protrusion; 2, main body; 21, second communication module; 211, second communication terminal; 22, zoom adjustment module; 23, aperture adjustment module; 24, ND filter adjustment module. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0038] To achieve the above purpose, the technical solution of the utility model is as follows:

[0039] See also Figure 1 As shown, this embodiment provides a lens parameter adjustment device, such as a follow focus device 100. The follow focus device 100 is used to wirelessly connect to a follow focus device actuator installed on a shooting device such as a video camera or a still camera. The follow focus device actuator can usually be a motor. The follow focus device actuator is engaged with a focus ring or an aperture adjustment ring of the shooting device. The follow focus device 100 remotely controls the follow focus device actuator to enable the shooting device to focus, adjust the focus, or adjust the aperture ring.

[0040] Specifically, refer to Figure 2 , the follow focus 100 includes a knob structure 1 and a main body 2. The knob structure 1 includes a first communication module 11, and the main body 2 includes a second communication module 21. The first communication module 11 includes a circuit board 111 and a first communication terminal 112. The second communication module 21 includes a second communication terminal 211 and a controller (not shown in the figure). The circuit board 111 is electrically connected to the first communication terminal 112, the first communication terminal 112 is electrically connected to the second communication terminal 211, and the second communication terminal 211 is electrically connected to the controller. An encoder (not shown in the figure) is provided on the circuit board 111. The knob structure 1 includes a rotating assembly 12, and the rotating assembly 12 includes a rotating shaft 121. A magnet 122 is provided inside the rotating shaft 121, and the magnet 122 can cooperate with the encoder. When the follow focus 100 is in use, the lens parameters can be adjusted by rotating the rotating assembly 12. When the rotating assembly 12 rotates, the encoder can detect the rotation angle of the magnet 122, and thus can obtain the adjustment angle of the knob structure 1. The adjustment angle is fed back to the controller of the main body 2 through the first communication terminal 112 and the second communication terminal 211, and the controller issues corresponding control commands to control the focusing, autofocusing, or aperture ring adjustment of the shooting device, thereby realizing the adjustment of the lens parameters.

[0041] Furthermore, refer to Figure 3-4 , the main body 2 further includes a zoom adjustment module 22, an aperture adjustment module 23, and an ND filter adjustment module 24. The zoom adjustment module 22, the aperture adjustment module 23, and the ND filter adjustment module 24 are all connected to the controller of the second communication module 21. In this embodiment, the zoom adjustment module 22 adjusts the focal length in the form of a pressure sensor, and the aperture adjustment module 23 adjusts the aperture based on the principle of a magnetic encoder. The zoom, aperture, and ND filter can be directly adjusted on the main body 2 of the follow focus 100 through the above modules, which can enrich the functions of the follow focus 100 and expand the application scenarios of the follow focus 100.

[0042] Furthermore, refer to Figure 2 , 5 -11, the knob structure 1 further includes a fixing component 13 and a damping component 14, and the rotating assembly 12 includes a rotating member 123 、Adjusting member 124, the rotating member 123 is rotatably connected to the fixed assembly 13 through the rotating shaft 121; the damping assembly 14 includes a pressing member 141 and a damping member 142. The adjusting member 124 is disposed on the pressing member 141, specifically, it can be shape-fitting or interference-fitting, or fixedly connected, etc. The pressing member 141 is threadedly connected to the rotating shaft 121 and presses on the damping member 142; the damping member 142 is disposed between the fixed assembly 13 and the pressing member 141; so that by rotating the adjusting member 124, the pressing member 141 can be driven to move axially along the rotating shaft 121, pressing the damping member 142, changing the contact area between the damping member 142 and the fixed assembly 13, thereby adjusting the damping. In this embodiment, the adjusting member 124 is used to adjust the damping magnitude, and the rotating member 123 is used to adjust the lens parameters. When the knob structure 1 is in use, first, the adjusting member 124 is rotated by an external force. Since when the adjusting member 124 is rotated, the user usually holds the rotating member 123 with one hand and twists the adjusting member 124 with the other hand, the rotating member 123 and the rotating shaft 121 will not rotate together with the adjusting member 124, and the pressing member 141 will move axially on the rotating shaft 121 to achieve the adjustment of the damping magnitude. During the adjustment, when the rotation angle of the adjusting member 124 is different, the axial displacement of the pressing member 141 is also different, the contact area between the damping member 142 and the fixed assembly 13 is also different, and the damping magnitude is also different; after the damping magnitude adjustment is completed, the lens parameters can be adjusted by controlling the rotation angle of the rotating member 123. When controlling the rotation of the rotating member 123, the user usually holds the main body 2 or the fixed assembly 13 with one hand and rotates the rotating member 123 with the other hand, and the adjusting member 124 will rotate together with the rotating member 123 and the rotating shaft 121. Therefore, at this time, the rotating member 123 and the rotating shaft 121 will not move relative to each other, the damping magnitude will not change, and only the lens parameters will be adjusted. Through the above structural design, the damping feel of the rotating member 123 rotated by the user in this text can change according to the different rotation angles of the adjusting member 124, which has adjustability. The larger the rotation angle of the adjusting member 124, when it is feedback to the user, the damping will also increase synchronously. The user can obviously feel that the resistance brought by the damping becomes larger, making it more difficult to continue rotating, so that the lens parameter adjustment device can meet the damping operation feel requirements of different users.

[0043] Specifically:

[0044] See Figure 12, in one implementation, the damping member 142 includes a separately provided damping portion 1421 and a transmission portion 1422. The damping portion 1421 is disposed between the transmission portion 1422 and the fixed assembly 13. The rotating member 123 is fixedly connected to the rotating shaft 121 and is provided with a through hole 1231. The transmission portion 1422 can pass through the through hole 1231. One side of the transmission portion 1422 can abut against the pressing member 141, and at least one elastic member 1424 is provided between the other side and the damping portion 1421. Axial movement of the pressing member 141 can press the transmission portion 1422, so that the transmission portion 1422 presses the elastic member 1424, thereby pressing the damping portion 1421 toward the fixed assembly 13. Specifically, in this embodiment, the elastic member 1424 can include a plurality of springs. Generally, springs follow linear deformation. With such a setting, the damping adjustment process can be a corresponding linear adjustment. In this embodiment, when the user rotates the adjusting member 124, the adjusting member 124 can drive the pressing member 141 to rotate relative to the rotating shaft 121 to axially move along the rotating shaft 121. Further, the pressing member 141 presses the transmission portion 1422, so that the transmission portion 1422 presses the elastic member 1424, and the other end of the elastic member 1424 can press on the damping portion 1421, so as to adjust the damping between the fixed assembly 13 and the rotating assembly 12. On the other hand, the transmission portion 1422 can be inserted through the through hole 1231 of the rotating member 123, and the damping portion 1421 can be in limit cooperation with the rotating member 123, so that when the user operates the rotating member 123 to rotate, the damping portion 1421 and the transmission portion 1422 can follow the rotating member 123 to rotate, and at this time, the user can also feel the damping feel. Specifically, as Figure 12 shown, a plurality of elastic members 1424 are connected between the transmission portion 1422 and the damping portion 1421, and the plurality of elastic members 1424 are symmetrically arranged.

[0045] See Figure 2 , in another implementation, the damping member 142 includes a separately designed damping portion 1421 and a transmission portion 1422. The damping portion 1421 is made of an elastic body. The damping portion 1421 is disposed between the transmission portion 1422 and the fixed assembly 13. The rotating member 123 is fixedly connected to the rotating shaft 121 and is provided with a through hole 1231. The transmission portion 1422 can pass through the through hole 1231. The transmission portion 1422 is located between the damping portion 1421 and the pressing member 141 and can abut against the damping portion 1421 and the pressing member 141 respectively. Axial movement of the pressing member 141 can press the transmission portion 1422, so that the transmission portion 1422 presses the damping portion 1421 toward the fixed assembly 13.

[0046] In this embodiment, the relative rotation between the rotating shaft 121 and the pressing member 141 can be achieved by rotating the adjusting member 124. The pressing member 141 can axially move relative to the rotating shaft 121 to further press the transmission part 1422, and the transmission part 1422 can further press the damping part 1421. The damping part 1421 can be made of some elastic materials in this embodiment. In this way, pressing the damping part 1421 by the transmission part 1422 can change the contact area between the damping part 1421 and the fixed component 13. In the above two implementation manners, by providing a through hole 1231 on the rotating member 123, the transmission part 1422 passes through the through hole 1231 and abuts against the pressing member 141. When the adjusting member 124 drives the pressing member 141 to axially move by rotation, the rotating member 123 can avoid interference through the through hole 1231, so as to avoid structural interference between the pressing member 141 and the rotating member 123 during the process of pressing the transmission part 1422 to move, and conveniently and smoothly realize damping adjustment. In the direction around the axis of the rotating shaft 121, the transmission part 1422 is inserted into the through hole 1231, so that when the rotating member 123 rotates, the transmission part 1422 can rotate around the axis of the rotating shaft 121 together with the rotating member 123. On the one hand, please refer to Figure 9-10 , a protrusion 1283 is provided on the rotating member 123, and a second limiting groove 1425 is formed in the damping part 1421. The protrusion 1283 can be received in the second limiting groove 1425, so that the damping part 1421 can rotate with the rotating member 123. Specifically, there can be a plurality of protrusions 1283, and the plurality of protrusions 1283 can be clamped in the second limiting groove 1425 on the outer periphery of the damping part 1421 at multiple positions.

[0047] Based on the above two implementation manners, an elastic member 1424 can be provided between the damping part 1421 and the transmission part 1422, or the elastic member 1424 can be not provided. When the elastic member 1424 is not provided, the damping part 1421 is made of an elastic body and has elasticity itself. During the process of adjusting the damping, it is convenient to deform and rebound, which can simplify the structure; when the elastic member 1424 is provided, a spring can be used as the elastic member 1424. By using the linear deformation of the spring, the damping change is more uniform and smoother.

[0048] Furthermore, referring to Figure 7The rotating member 123 includes a mounting portion 1232 and a limiting portion 1233. The mounting portion 1232 is a threaded hole structure, and the limiting portion 1233 is a cross-shaped rib structure. The mounting portion 1232 is located in the middle of the cross-shaped rib structure. The rotating shaft 121 is fixed to the mounting portion 1232 by threading. In some embodiments, it can also be fixed with glue. The transmission portion 1422 includes a first limiting groove 1423 of a cross-shaped structure. The limiting portion 1233 is movably arranged in the first limiting groove 1423. During the axial movement of the rotating shaft 121, the transmission portion 1422 can make the first limiting groove 1423 cooperate with the limiting portion 1233 for limiting to avoid position displacement.

[0049] Further, see Figure 6 The adjusting member 124 includes an adjusting knob 1241 and a first connecting member 1242. The rotating member 123 has a receiving groove 1234 on the side facing away from the fixed component 13. The bottom of the receiving groove 1234 has a mounting hole 1235. The adjusting knob 1241 is accommodated in the receiving groove 1234. The first connecting member 1242 is accommodated in the mounting hole 1235 and is fixedly connected to the adjusting knob 1241. The first connecting member 1242 is matched with the holding member 141 through the hole position. Rotating the adjusting knob 1241 can drive the first connecting member 1242 to rotate, and rotating the first connecting member 1242 can drive the holding member 141 to rotate. The adjusting knob 1241 is exposed on the rotating member 123 through the receiving groove 1234. When in use, the adjusting knob 1241 is manually turned outside the knob structure 1 to drive the first connecting member 1242 to rotate relative to the rotating member 123, and then the first connecting member 1242 drives the holding member 141 to rotate relative to the rotating shaft 121. The holding member 141 moves axially along the rotating shaft 121, pressing or moving away from the transmission part 1422, and adjusting the contact area between the damping part 1421 and the fixed component 13 to achieve damping adjustment. The structure is simple and compact, and the adjustment is simpler and more convenient. It is worth noting that in the present embodiment, the first connecting member 1242 and the holding member 141 are matched in shape through a non-circular hole. In another embodiment, the first connecting member 1242 and the holding member 141 can also be interference fit, or directly fixedly connected, etc.

[0050] Further, see Figure 2 , Figure 12Specifically, one of the first connecting member 1242 and the rotating member 123 on the opposite side is equipped with a dial bead 125, and the other is provided with a plurality of toggle limit grooves 126 adapted to the round end of the dial bead 125. Turning the adjusting knob 1241 can make the dial bead 125 rotate from one toggle limit groove 126 to another toggle limit groove 126. This arrangement allows the user to have a toggle feel when turning the adjusting knob 1241. In this embodiment, it is preferred that the first connecting member 1242 is equipped with a dial bead 125 on the side facing the adjusting knob 1241, and the rotating member 123 is provided with a plurality of toggle limit grooves 126 adapted to the round end of the dial bead 125 on the side facing the dial bead 125. Turning the adjusting knob 1241 can make the dial bead 125 rotate from one toggle limit groove 126 to another toggle limit groove 126. With the above structure, when the adjusting knob 1241 is rotated, the first connecting member 1242 can rotate relative to the rotating member 123, and the dial ball 125 can switch in different dial limit grooves 126 to achieve feedback of the dialing feeling.

[0051] Further, see Figure 2 and 6 The rotating member 123 includes a first rotating member 127 and a second rotating member 128, the first rotating member 127 and the second rotating member 128 are threadedly fixedly connected, the accommodating groove 1234 and the mounting hole 1235 are both arranged on the first rotating member 127; the adjusting knob 1241 includes a hand-twisting portion 12411 and a connecting portion 12412, the first connecting member 1242 includes a protruding portion 12421 and an annular portion 12422, the hand-twisting portion 12411 is connected to the connecting portion 12412, the protruding portion 12421 passes through the mounting hole 1235 and is fixedly connected to the connecting portion 12412, the annular portion 12422 is arranged on the outer side of the protruding portion 12421, and the bead 125 is installed on the annular portion 12422.

[0052] Further, see Figure 2 , Figure 6 and Figure 11 The second rotating member 128 includes a first rotating portion 1281 and a second rotating portion 1282, the first rotating portion 1281 and the second rotating portion 1282 are fixedly connected by screws, the second rotating portion 1282 is threadedly fixedly connected to the first rotating member 127, and the second rotating portion 1282 is fixedly connected to the rotating shaft 121; the mounting portion 1232 is disposed on the second rotating portion 1282; a movable groove 129 is disposed between the first rotating portion 1281 and the second rotating portion 1282, the damping portion 1421 is disposed in the movable groove 129, and the first rotating portion 1281, the damping portion 1421, and the second rotating portion 1282 are provided with corresponding through holes, please refer to Figure 10, the first rotating part 1281 and the second rotating part 1282 are fixedly connected by screws, and the screws pass through the perforations of the damping part 1421. In the radial direction of the rotating shaft 121, that is, the rotation of the first rotating part 1281 and the second rotating part 1282 can drive the damping part 1421 to rotate, and the damping part 1421 can be within the movable groove 129 and can move axially relative to the first rotating part 1281 and the second rotating part 1282 along the rotating shaft 121. The above structural design can not only ensure that the damping part 1421 rotates with the first rotating member 127, but also enable the damping part 1421 to move axially along the rotating shaft 121, approaching or departing from the fixed component 13, so as to adjust the contact area between the damping member 142 and the fixed component 13, and further adjust the damping magnitude.

[0053] Specifically, please refer to Figure 2 and Figure 11 , the first rotating part 1281 includes a first rotating shell 12811, a second rotating shell 12812, and a third rotating shell 12813. The first rotating shell 12811 is of an annular structure and is arranged on the outermost side. The second rotating part 1282 and the first rotating member 127 are both arranged within the first rotating shell 12811. The second rotating shell 12812 and the third rotating shell 12813 are connected by screws, and the third rotating shell 12813, the second rotating part 1282, and the damping part 1421 are connected by screws; the first rotating shell 12811 is clamped between the first rotating member 127 and the third rotating shell 12813, so as to be stably sleeved on the outer circle of the second rotating part 1282 to achieve fixation with the second rotating part 1282; there is an interference fit between the second rotating part 1282 and the first rotating member 127, and the second rotating part 1282 is fixedly connected to the rotating shaft 121 by threads. Through the design of the above structure, rotating the outermost first rotating shell 12811 or the third rotating shell 12813 can drive the second rotating shell 12812, the third rotating shell 12813, the second rotating part 1282, the second rotating member 128, the first rotating member 127, and the rotating shaft 121 to rotate simultaneously to adjust the lens parameters. On the other hand, the user can rotate the hand-twisting part 12411, so that the pressing part 141 can rotate relative to the rotating shaft 121, and the pressing part 141 moves axially along the rotating shaft 121 to adjust the damping magnitude. In this way, when the user rotates the first rotating shell 12811 or the third rotating shell 12813, different damping hand feelings can be obtained.

[0054] Specifically, in one implementation, a protrusion 1283 is provided on the third rotating shell 12813. The damping portion 1421 includes several damping support arms 14211. A second limiting groove 1425 is formed between two adjacent damping support arms 14211. The protrusion 1283 is received in the second limiting groove 1425. The damping support arms 14211 are disposed between the transmission portion 1422 and the fixed assembly 13, so that the damping portion 1421 can rotate with the first rotating portion 1281. The damping support arms 14211 are elastic and can displace through deformation to adjust the contact area with the remaining fixed assembly 13, thereby adjusting the damping magnitude. In another implementation, the damping portion 1421 adopts a planar structure with a plurality of second limiting grooves 1425 formed therein. The protrusion 1283 provided on the third rotating shell 12813 is received in the second limiting groove 1425. An elastic member 1424 is provided on the side of the damping portion 1421 facing the transmission portion 1422. The elastic member 1424 is a spring. One end of the spring abuts against or is connected to the transmission portion 1422, and the other end abuts against or is connected to the damping portion 1421. When the user rotates the adjusting member 124, the adjusting member 124 can drive the pressing member 141 to rotate relative to the rotating shaft 121 to axially move along the rotating shaft 121. Further, the pressing member 141 presses the transmission portion 1422, so that the transmission portion 1422 presses the elastic member 1424, and the other end of the elastic member 1424 can press on the damping portion 1421, so as to adjust the damping between the fixed assembly 13 and the rotating assembly 12. In the above two methods, the third rotating shell 12813 is engaged with the second limiting groove 1425 through the protrusion 1283. During the movement of the damping portion 1421, it can be limited through the cooperation of the protrusion 1283 and the second limiting groove 1425, and can also achieve the snap connection and fixation with the third rotating shell 12813 in the rotation direction around the rotating shaft, facilitating the rotating member 123 to drive the damping portion 1421 to rotate together.

[0055] Through the design of the above structure, the rotating member 123 can be set as multiple separate rotating components, and the separate design is adopted between the rotating components, and they are connected by screws or interference fit. Each rotating component has a separate function and there is no interference between them, so that the structural design between the rotating member 123, the rotating shaft 121, the damping member 142, and the adjusting member 124 is more flexible, and thus the structure of the entire knob structure 1 is more ingenious and compact.

[0056] Further, referring to Figure 6 , the fixed assembly 13 includes a fixing plate 131. One side of the first communication module 11 facing away from the second communication module 21 is connected to the fixing plate 131. The fixing plate 131 and the rotating shaft 121 are rotatably connected through a bearing 132. The side of the damping portion 1421 facing away from the pressing member 141 abuts against the fixing plate 131.

[0057] Specifically, the fixing plate 131 is provided with a convex post 1311 on the side facing the damping assembly 14. The convex post 1311 has a through hole that penetrates up and down. The bearing 132 is installed in the through hole, and the rotating shaft 121 penetrates through the through hole up and down. The magnet 122 is located at the lower end of the rotating shaft 121 and is exposed through the through hole, facing the circuit board 111 directly, which is convenient for cooperation with the encoder on the circuit board 111. The convex post 1311 can limit the rotating shaft 121 to ensure the structural stability of the rotating shaft 121.

[0058] Specifically, an installation position is formed on the circumferential side of the convex post 1311. The damping part 1421 and the transmission part 1422 have through holes that avoid the convex post 1311, so that the damping part 1421 and the transmission part 1422 can be installed in the installation position, and the up and down movement of the transmission part 1422 can be limited by the convex post 1311. The through holes can also prevent the fixing plate 131 from interfering with the structures of the damping part 1421 and the transmission part 1422.

[0059] Further, referring to Figure 7-8 , the pressing member 141 includes an integrally formed positioning protrusion 1411 and a pressing platform 1412. The first connecting member 1242 includes a positioning hole 12423, which is provided on the protruding portion 12421. The positioning protrusion 1411 penetrates through the positioning hole 12423 and engages with the positioning hole 12423 through a plane, so that the two are fixed in the direction around the axis of the rotating shaft. The adjusting knob 1241 can drive the pressing member 141 to rotate through the first connecting member 1242. The pressing platform 1412 abuts against the transmission part 1422. The pressing platform 1412 includes a gasket 143. A stepped surface 1413 is provided on the surface of the pressing platform 1412 away from the positioning protrusion 1411 for installing the gasket 143, so as to avoid abrasion between the pressing platform 1412 and the transmission part 1422. A through internal threaded hole 1414 is also provided in the positioning protrusion 1411. The pressing member 141 is connected to the rotating shaft 121 through the internal threaded hole 1414, so that it can perform axial movement relative to the rotating shaft 121 during rotation to tighten or loosen the damping member 142.

[0060] Further, referring to Figure 13-14The knob structure 1 also includes a rotating gear adjustment component 15, which includes a gear adjustment handle 151, a movable part 152, and a gear limit switch 153. The fixed component 13 also includes a bottom plate 133. A cavity is formed between the bottom plate 133 and the fixed plate 131. The movable part 152 and the gear limit switch 153 are arranged in the cavity; the gear adjustment handle 151 is movably connected to the bottom plate 133, and one end of the gear adjustment handle 151 extends into the cavity and is in contact with the movable part 152. The two ends of the movable member 152 are held against each other, and the other end is exposed outside the bottom plate 133; the end of the movable member 152 away from the gear adjustment handle 151 is adjacent to the gear limit switch 153; when the gear adjustment handle 151 is moved to the first position, the movable member 152 presses the gear limit switch 153, so that the gear limit switch 153 is closed; when the gear adjustment handle 151 is moved to the second position, the movable member 152 is away from the gear limit switch 153, and the gear limit switch 153 is opened, thereby realizing the switching of the gear of the rotating member 123.

[0061] Furthermore, a toggle protrusion 154 is provided on one side of the gear adjustment dial handle 151 close to the movable member 152, and a first slot 155 and a second slot 156 are provided on the movable member 152. There is an inclined surface structure between the first slot 155 and the second slot 156, and the toggle protrusion 154 is slidably connected with the inclined surface structure to realize active switching between the first slot 155 and the second slot 156. When the toggle protrusion 154 slides from the first slot 155 to the second slot 156, it can push the movable member 152 to press the gear limit switch 153, so that the gear limit switch 153 is closed; when the toggle protrusion 154 slides from the second slot 156 to the first slot 155, it can push the movable member 152 away from the gear limit switch 153, so that the gear limit switch 153 is opened; thereby realizing the gear switching.

[0062] Furthermore, a first rotation limiting protrusion 12814 is provided on the inner side of the second rotation shell 12812, and a second rotation limiting protrusion 157 is also provided on the movable member 152; when the toggle protrusion 154 is located in the first clamping groove 155, the second rotation limiting protrusion 157 is located on the rotation track of the first rotation limiting protrusion 12814; when the toggle protrusion 154 is located in the second clamping groove 156, the second rotation limiting protrusion 157 is separated from the rotation track of the first rotation limiting protrusion 12814. When the second rotation limiting protrusion 157 is located on the rotation track of the first rotation limiting protrusion 12814, there is structural interference between the two, so that the rotation stroke of the adjusting member 124 is limited; thus, the stroke adjustment of the rotating member 123 can be achieved through the gear adjustment dial 151.

[0063] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A knob structure, characterized in that, include: Fixing components; Rotating assembly, including a rotating member 、 Adjusting member and a rotating shaft, the rotating member is rotatably connected to the fixed assembly through the rotating shaft; The damping component comprises a holding member and a damping member, wherein the damping member is located between the fixing component and the holding member, the holding member is rotatably arranged on the rotating shaft and can abut against the damping member; the holding member can move axially relative to the rotating shaft when rotating, and the adjusting member is arranged on the holding member; the adjusting member can drive the holding member to rotate under the rotation of external force, so that the holding member can move axially relative to the rotating shaft, abut against the damping member, and change the contact area between the damping member and the fixing component.

2. A knob structure according to claim 1, characterized in that, The damping member comprises a damping part and a transmission part, wherein the damping part is arranged between the transmission part and the fixed assembly, the rotating member is fixedly connected to the rotating shaft, one side of the transmission part can be abutted against the holding member, and at least one elastic member is arranged between the other side and the damping part, and the holding member can press the transmission part when the holding member moves axially, so that the transmission part presses the elastic member, thereby pressing the damping part toward the fixed assembly; or, The damping member includes a damping part and a transmission part, the damping part is arranged between the transmission part and the fixed assembly, the rotating member is fixedly connected to the rotating shaft, the transmission part is located between the damping part and the pressing member, and can respectively abut against the damping part and the pressing member, and the pressing member can press the transmission part axially so that the transmission part presses the damping part toward the fixed assembly.

3. The knob structure according to claim 2, characterized in that, The rotating member is provided with a through hole, the transmission part can pass through the through hole, and the transmission part is located between the damping part and the holding member.

4. The rotary knob structure according to claim 3, characterized in that, The rotating part includes a mounting portion and a plurality of limiting portions, wherein the plurality of limiting portions extend toward the direction of the rotating shaft to connect to the outer wall of the mounting portion, the rotating shaft is passed through and fixed to the mounting portion, and the transmission portion includes a plurality of first limiting grooves, wherein the plurality of limiting portions and the plurality of first limiting grooves are arranged in a one-to-one correspondence, and each limiting portion can be accommodated in the corresponding first limiting groove.

5. A knob structure according to claim 2, characterized in that, The rotating member includes a plurality of protrusions, the damping portion includes a second limiting groove, and the protrusions are accommodated in the second limiting groove, so that the damping portion can rotate with the rotating member.

6. A knob structure according to any one of claims 1-5, characterized in that, The adjusting member includes an adjusting knob and a first connecting member. The rotating member has a receiving groove on a side facing away from the fixed component. The adjusting knob is received in the receiving groove. The first connecting member is fixedly connected to the adjusting knob. The first connecting member and the holding member are matched in shape. Rotating the adjusting knob can drive the first connecting member to rotate. Rotating the first connecting member can drive the holding member to rotate.

7. A knob structure according to claim 6, characterized in that, One of the first connecting member and the rotating member on the opposite side is equipped with a dial bead, and the other is provided with a plurality of dial limit grooves adapted to the round end of the dial bead. Rotating the adjusting knob can cause the dial bead to rotate from one of the dial limit grooves to the other of the dial limit grooves.

8. A knob structure according to claim 7, characterized in that, The rotating member includes a first rotating member and a second rotating member, the second rotating member is rotatably arranged on the fixed assembly through a rotating shaft, the first rotating member is fixedly connected to the second rotating member, the accommodating groove is arranged on the first rotating member, and the groove bottom of the accommodating groove includes a mounting hole; the adjusting knob includes a hand-twisting portion and a connecting portion, the first connecting member includes a protruding portion and an annular portion, the hand-twisting portion is connected to the connecting portion, the protruding portion passes through the mounting hole and is fixedly connected to the connecting portion, the protruding portion is arranged to match the shape of the holding member, the annular portion is arranged on the outer side of the protruding portion, and the bead is installed on the annular portion.

9. A knob structure according to claim 8, characterized in that, The second rotating member includes a first rotating part and a second rotating part, the first rotating part is fixedly connected to the second rotating part, the second rotating part is fixedly connected to the first rotating member, and the second rotating part is fixedly connected to the rotating shaft; a movable groove is arranged between the first rotating part and the second rotating part, and the end of the damping member away from the rotating shaft is arranged in the movable groove, the first rotating part, the damping part and the second rotating part are radially limited in the rotating shaft, and the damping part can be in the movable groove and can move relative to the first rotating part and the second rotating part in the axial direction of the rotating shaft.

10. A lens parameter adjustment device, characterized in that, It comprises a main body and the knob structure according to any one of claims 1 to 9, wherein the side of the fixed component facing away from the rotating part is connected to the main body, the side of the fixed component facing the main body is provided with a first communication module, and the side of the main body facing the fixed component is provided with a second communication module, and the first communication module and the second communication module can be electrically connected.

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