Rotary switchable optical grading device and optical equipment

Abstract

The invention relates to a rotary switchable optical grading device and optical equipment. The device comprises a fixed shell, a rotation adjusting mechanism, a mode switching mechanism, a step positioning mechanism and a continuous rotation supporting assembly. The mechanical constraint in the system can be dynamically changed by operating the mode switching mechanism to be switched between the locking state and the unlocking state. During unlocking, the internal coupling acting force of the grading positioning mechanism is larger than the rotating friction force, the rotating adjusting mechanism is forced to smoothly and continuously rotate around the supporting assembly as a whole, and fine adjustment is facilitated. In the locking process, the rotation adjusting mechanism is fixed, a user operates to directly overcome the stepping positioning force, stepping positioning adjustment with the clear click feeling is achieved, and the stepping adjusting mechanism is suitable for fast preset position switching. By means of a simple and compact mechanical structure, a continuous stepless adjusting mode and a discrete stepping adjusting mode are integrated on one set of device, one-key instantaneous reliable switching is achieved, and the adjusting flexibility and operation experience of products such as optical equipment integrated with the device are remarkably improved.

Description

Technical Field

[0001] This application relates to the field of precision instrument adjustment technology, and in particular to a rotary switchable optical divider and optical equipment. Background Technology

[0002] In optical instruments, testing equipment, and precision instruments, fine-tuning of components is often required. These adjustments can be categorized into two types: first, continuous stepless rotational adjustment, used for smooth, gradual fine-tuning of parameters such as angle and position, requiring smooth operation without any jerking; second, stepped positioning rotational adjustment, used for rapid and accurate selection and switching between several preset, discrete positions, requiring clear positions, reliable positioning, and no backlash.

[0003] In existing technologies, continuous rotation is often achieved using low-friction bearings such as deep groove ball bearings and needle roller bearings, while segmented positioning commonly employs a structure where steel balls (or rollers) are engaged in V-grooves or arc-shaped grooves under the action of springs. However, these two functions are contradictory in their mechanical principles: continuous rotation requires extremely low and constant frictional resistance; while segmented positioning requires periodically changing resistance (high resistance during positioning and low resistance during shifting) to produce a "click" sensation.

[0004] Therefore, most existing products can only achieve a single function. A few solutions that attempt to integrate two functions are either structurally complex and bulky, or unable to achieve stable and convenient switching between the two modes. Users have to replace different adjustment components or even use different devices in different application scenarios, leading to cumbersome operation, low efficiency, and increased costs. Summary of the Invention

[0005] Therefore, it is necessary to provide a rotating switchable optical grading device and optical equipment to overcome the deficiencies existing in the above-mentioned background art.

[0006] A rotary switchable optical grading device, comprising Fixed casing; A rotary adjustment mechanism is rotatably disposed within the fixed housing; The mode switching mechanism is disposed on the fixed housing and has a first state in which the rotation adjustment mechanism is locked relative to the fixed housing, and a second state in which the lock is released. A gear-positioning mechanism, disposed within the rotary adjustment mechanism, provides a discrete positioning function with a gear-positioning feel when the mode switching mechanism is in its first state; and A continuous rotary support assembly is disposed between the rotary adjustment mechanism and the fixed housing; When the mode switching mechanism is in the second state, the segmented positioning mechanism couples the motion inside the rotary adjustment mechanism, so that the rotational driving force acting on the outside of the rotary adjustment mechanism drives the entire rotary adjustment mechanism as a whole to rotate continuously and steplessly around the continuous rotary support assembly. When the mode switching mechanism is in the first state, the rotary adjustment mechanism is locked relative to the fixed shell, and the rotational driving force acting on the outside of the rotary adjustment mechanism needs to overcome the positioning force of the segmented positioning mechanism, so that relative motion is generated inside the rotary adjustment mechanism to realize segmented positioning adjustment.

[0007] As a preferred embodiment of the rotary switchable optical grading device of the present invention, the mode switching mechanism includes A threaded hole is provided on the fixed housing; and A set screw is screwed into the threaded hole; The first state is formed by tightening the set screw so that its end presses against the rotary adjustment mechanism; the second state is formed by loosening the set screw so that its end moves away from the rotary adjustment mechanism.

[0008] As a preferred embodiment of the rotary switchable optical grading device of the present invention, the rotary adjustment mechanism includes First rotating bushing; and The second rotating bushing is rotatably fitted inside the first rotating bushing and is coaxially arranged with the first rotating bushing. The set screw of the mode switching mechanism acts on the first rotating bushing.

[0009] As a preferred embodiment of the rotary switchable optical grading device of the present invention, the grading positioning mechanism includes A grooved element is fixedly connected to the second rotating bushing, and the circumferential surface of the grooved element near the end of the first rotating bushing is provided with a plurality of positioning grooves; The positioning body is movably disposed between the first rotating bushing and the grooved element; An elastic element provides a biasing force to the positioning body, causing it to press against the surface of the grooved element; Under the action of the elastic element, the positioning body can selectively engage with any of the positioning slots of the slotted element.

[0010] As a preferred embodiment of the rotary switchable optical grading device of the present invention, the first rotating bushing is provided with a radial hole, and the positioning body and the elastic element are accommodated in the radial hole.

[0011] As a preferred embodiment of the rotary switchable optical grading device of the present invention, the positioning body is a steel ball and the elastic element is a compression spring.

[0012] As a preferred embodiment of the rotary switchable optical grading device of the present invention, the bias force provided by the elastic element is configured such that when the mode switching mechanism is in the second state, the minimum torque required to disengage the positioning body from the positioning groove is greater than the rotational friction torque of the continuous rotary support assembly under rated load.

[0013] As a preferred embodiment of the rotary switchable optical grading device of the present invention, the grooved element is provided with a scale at the end opposite to the first rotating bushing.

[0014] As a preferred embodiment of the rotary switchable optical grading device of the present invention, the continuous rotary support assembly is a needle roller bearing, with its inner ring connected to the rotary adjustment mechanism and its outer ring connected to the fixed housing.

[0015] An optical device includes the aforementioned rotary switchable adjustment device for adjusting the direction or angle of optical elements in the optical device.

[0016] The beneficial effects of this invention are: This invention solves the problem of integrating and switching between "continuous rotation" and "gradient positioning" on the same device. Users can instantly change the device's functional mode by operating a simple mode switching mechanism without replacing parts or using tools. The mode switching mechanism is simple, robust, and has a clear state and reliable locking. In continuous rotation mode, rotation is smooth and resistance is uniform. In graded positioning mode, the gear positions are clear and precise, positioning is accurate, and there is no backlash. The operating feel in both modes is precisely guaranteed by the mechanical structure itself, resulting in excellent consistency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is one of the three-dimensional structural schematic diagrams of the optical switching and grading device according to an embodiment of this application; Figure 2 This is a second three-dimensional structural schematic diagram of the optical switching and grading device according to an embodiment of this application; Figure 3 This is a cross-sectional structural diagram of the optical switching and grading device according to an embodiment of this application; Figure 4 This is an exploded view of the optical switching and grading device according to an embodiment of this application; Figure 5This is a schematic diagram illustrating the interaction of the slotted element, positioning element, and elastic element in an embodiment of this application. Explanation of reference numerals in the attached figures: 1000. Fixed outer casing; 2000, Rotary adjusting mechanism; 2100, First rotating bushing; 2200, Second rotating bushing; 2300, Radial hole 3000, Mode switching mechanism; 3100, Threaded hole; 3200, Set screw; 4000, Segmentation and positioning mechanism; 4100, Grooved element; 4200, Positioning body; 4300, Elastic element; 4400, Positioning groove; 4500, Dial 5000, Continuous Rotary Support Assembly; 6000, back panel Detailed Implementation To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0019] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0023] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0024] According to one aspect of this application, embodiments of this application provide a rotary switchable optical grading device, which can be referred to in conjunction with the above. Figures 1 to 5The rotatable switchable optical grading device includes a fixed housing 1000, a rotation adjustment mechanism 2000, a mode switching mechanism 3000, a grading positioning mechanism 4000, and a continuous rotation support assembly 5000. The rotation adjustment mechanism 2000 is rotatably disposed within the fixed housing 1000. The mode switching mechanism 3000 is disposed on the fixed housing 1000 and has a first state in which the rotation adjustment mechanism 2000 is locked relative to the fixed housing 1000, and a second state in which the lock is released. The grading positioning mechanism 4000 is disposed inside the rotation adjustment mechanism 2000 and provides a discrete positioning function with a grading feel when the mode switching mechanism 3000 is in the first state. The continuous rotation support assembly 5000 is disposed within the rotation adjustment mechanism. Between the rotation adjustment mechanism 2000 and the fixed housing 1000, when the mode switching mechanism 3000 is in the second state, the segmented positioning mechanism 4000 couples the motion inside the rotation adjustment mechanism 2000, so that the rotation driving force acting on the outside of the rotation adjustment mechanism 2000 drives the entire rotation adjustment mechanism 2000 as a whole to rotate continuously and steplessly around the continuous rotation support assembly 5000; when the mode switching mechanism 3000 is in the first state, the rotation adjustment mechanism 2000 is locked relative to the fixed housing 1000, and the rotation driving force acting on the outside of the rotation adjustment mechanism 2000 needs to overcome the positioning force of the segmented positioning mechanism 4000, so that the rotation adjustment mechanism 2000 generates relative motion inside, thereby realizing segmented positioning adjustment.

[0025] In the embodiment of the application, the rotary switchable optical grading device includes a fixed housing 1000, a rotation adjustment mechanism 2000, a mode switching mechanism 3000, a grading positioning mechanism 4000, and a continuous rotation support assembly 5000. By switching between a first state and a second state via the mode switching mechanism 3000, the internal mechanical constraints of the system can be dynamically changed. In the second state, the internal coupling force of the grading positioning mechanism 4000 is greater than the rotational friction force, forcing the rotation adjustment mechanism 2000 to rotate smoothly and continuously around the continuous rotation support assembly 5000 as a whole, suitable for fine-tuning. In the first state, the rotation adjustment mechanism 2000 is fixed, and the user operation directly overcomes the grading positioning force, achieving grading positioning adjustment with a clear "click" feel, suitable for rapid preset position switching.

[0026] In one embodiment, please refer to [the relevant documentation / reference]. Figures 1 to 3The mode switching mechanism 3000 includes a threaded hole 3100 and a set screw 3200. The threaded hole 3100 is provided on the fixed housing 1000. The set screw 3200 is screwed into the threaded hole 3100. Tightening or loosening the set screw 3200 can cause its end to press against or disengage from the outer surface of the rotation adjustment mechanism 2000. Tightening the set screw 3200 so that its end presses against the rotation adjustment mechanism 2000 forms the first state. Loosening the set screw 3200 so that its end moves away from the rotation adjustment mechanism 2000 forms the second state.

[0027] In one embodiment, please refer to [the relevant documentation / reference]. Figures 1 to 4 The rotary adjustment mechanism 2000 includes a first rotary bushing 2100 and a second rotary bushing 2200. The first rotary bushing 2100 and the second rotary bushing 2200 are coaxially arranged. The first rotary bushing 2100 is sleeve-shaped, and a fixing groove for connecting a set screw 3200 is provided on its outer side along its circumference. After the set screw 3200 is tightened, the end of the set screw 3200 extends into the fixing groove and abuts against it. The second rotary bushing 2200 is rotatably nested inside the first rotary bushing 2100.

[0028] The first rotating bushing 2100 has a radial hole 2300 arranged along the circumference on one side. The radial hole 2300 includes an inner ring hole and an outer ring hole.

[0029] In one embodiment, please refer to [the relevant documentation / reference]. Figures 1 to 5The grading positioning mechanism 4000 includes a grooved element 4100, a positioning body 4200, and an elastic element 4300. The grooved element 4100 is annular, and its outer circumferential surface is machined with multiple evenly distributed V-shaped positioning grooves 4100 to facilitate rotation. It is internally fixedly connected to the end of the second rotating bushing 2200. The circumferential surface of the grooved element 4100 near the end of the first rotating bushing 2100 is provided with multiple positioning grooves 4400. The positioning grooves 4400 and the outer annular hole are located in the same circumference. The positioning body 4200 is movably disposed between the first rotating bushing 2100 and the grooved element 4100. Between 0 and 0, the elastic element 4300 provides a biasing force to the positioning body 4200, causing it to press against the surface of the grooved element 4100. The elastic element 4300 and the positioning body 4200 are sequentially installed into the radial hole 2300 of the first rotating bushing 2100. The preload of the elastic element 4300 forces the positioning body 4200 to abut against the grooved element 4100. The positioning body 4200 located in the inner ring hole is partially embedded in one of the positioning grooves 4400 of the grooved element 4100, thereby generating a coupling force between the two. The positioning body 4200 located in the inner ring hole abuts against the surface of the grooved element 4100. The positioning body 4200 has a dual function: firstly, as a positioning body, in the geared positioning mode, its engagement and disengagement from the positioning groove 4400 provides a clear sense of gear position; secondly, in the continuous rotation mode, the positioning body 4200 embedded in the positioning groove 4400, together with other positioning bodies 4200 abutting against the smooth surface, works to form a three-point contact support structure. This structure can stabilize the coaxiality of the grooved element 4100 relative to the first rotating bushing 2100. Simultaneously, all positioning bodies 4200 roll at the contact points, effectively functioning like rolling bearings and significantly reducing the rotational frictional resistance between the grooved element 4100 and the first rotating bushing 2100. This design ensures that the coupling holding force M inside the geared positioning mechanism 4000 is maintained when the mode switching mechanism 3000 is in the unlocked state. 定位 It can reliably exceed the frictional torque M of the entire rotary adjustment mechanism 2000 rotating around the continuous rotary support assembly 5000. 摩擦 This enables a stable and reliable switch from segmented positioning mode to smooth continuous rotation mode.

[0030] The positioning body 4200 may be a steel ball, and the elastic element 4300 may be a compression spring. The biasing force provided by the elastic element 4300 is configured such that when the mode switching mechanism 3000 is in the second state, the minimum torque required to disengage the positioning body 4200 from the positioning groove 4100 is greater than the rotational friction torque of the continuous rotational support assembly 5000 under rated load.

[0031] In one embodiment, please refer to [the relevant documentation / reference]. Figure 1 , Figure 3 and Figure 4The grooved element 4100 has an annular mounting groove at the end opposite to the first rotating bushing 2100. The outer ring end of the annular mounting groove is embedded with a dial 4500, and its inner ring end is fixed to the dial 4500 by a fixing ring that is fixedly connected to the annular mounting groove.

[0032] In one embodiment, please refer to [the relevant documentation / reference]. Figure 3 and Figure 4 The continuous rotary support assembly 5000 is a needle roller bearing. Its inner ring is connected to the second rotary bushing 2200, and its outer ring is connected to the fixed housing 1000. The continuous rotary support assembly 5000 is installed between the fixed housing 1000 and the second rotary bushing 2200 through the annular rear plate 6000.

[0033] Explanation of the two operating modes of the device: Continuous rotation mode: Loosen the set screw 3200 so that its end is no longer in contact with the first rotating sleeve 2100. At this time, the mode switching mechanism 3000 is in the second state. In this state, the elastic element 4300 applies a holding force in the positioning groove 4400 through the positioning body 4200, so that the minimum torque M required to drive the grooved element 4100 together with the second rotating sleeve 2200 to rotate relative to the first rotating sleeve 2100 is sufficient. 定位 It is designed to be much greater than the frictional torque M required to overcome to drive the entire rotary adjustment mechanism 2000, namely the first rotary bushing 2100, the second rotary bushing 2200, and the grooved element 4100, to rotate around the continuous rotary support assembly 5000. 摩擦 That is, satisfying the relation: M 定位 >M 摩擦 .

[0034] Therefore, when the user holds and rotates the grooved element 4100, the applied torque cannot disengage the positioning body 4200 from the positioning groove 4400. Instead, it locks the grooved element 4100, the second rotating bushing 2200, and the first rotating bushing 2100 into a rigid whole. This whole rotates smoothly, steplessly, and without jerking around the continuous rotating support assembly 5000 under user drive. At this time, the positioning body 4200 only experiences slight rolling friction within the positioning groove 4400, and the user feels only uniform and smooth resistance. This mode is suitable for scenarios requiring a wide range or fine-tuning of angles.

[0035] Gear adjustment mode: Tighten the set screw 3200 so that its end is firmly pressed against and locked to the first rotating bushing 2100, so that it cannot rotate at all relative to the fixed housing 1000. At this time, the mode switching mechanism 3000 is in the first state.

[0036] Since the first rotating sleeve 2100 is fixed, when the user rotates the grooved element 4100 again, the grooved element 4100 and the second rotating sleeve 2200 will be forced to rotate relative to the fixed first rotating sleeve 2100. The user must apply sufficient torque to overcome the force of the elastic element 4300, causing the positioning body 4200 to move out of one positioning groove 4400, roll over the cylindrical surface of the grooved element 4100, and then enter the next adjacent positioning groove 4400. This process produces a distinct sound and feel, and each occurrence represents the grooved element 4100 rotating through a fixed angle, i.e., one gear. The user can accurately position the device by observing the dial 4500. This mode is suitable for applications requiring rapid, accurate, and repetitive switching between multiple preset angle positions.

[0037] According to one aspect of this application, an embodiment of this application provides an optical device including the aforementioned rotary switchable adjustment device for adjusting the direction or angle of optical elements in the optical device.

[0038] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A rotary switchable optical grading device, characterized in that: include Fixed casing; A rotary adjustment mechanism is rotatably disposed within the fixed housing; The mode switching mechanism is disposed on the fixed housing and has a first state in which the rotation adjustment mechanism is locked relative to the fixed housing, and a second state in which the lock is released. The gear positioning mechanism is located inside the rotary adjustment mechanism and is used to provide a discrete positioning function with gear feel when the mode switching mechanism is in the first state. as well as A continuous rotary support assembly is disposed between the rotary adjustment mechanism and the fixed housing; When the mode switching mechanism is in the second state, the segmented positioning mechanism couples the motion inside the rotary adjustment mechanism, so that the rotational driving force acting on the outside of the rotary adjustment mechanism drives the entire rotary adjustment mechanism as a whole to rotate continuously and steplessly around the continuous rotary support assembly. When the mode switching mechanism is in the first state, the rotary adjustment mechanism is locked relative to the fixed shell, and the rotational driving force acting on the outside of the rotary adjustment mechanism needs to overcome the positioning force of the segmented positioning mechanism, so that relative motion is generated inside the rotary adjustment mechanism to realize segmented positioning adjustment.

2. The rotary switchable optical grading device according to claim 1, characterized in that, The mode switching mechanism includes A threaded hole is provided on the fixed housing; and A set screw is screwed into the threaded hole; The first state is formed by tightening the set screw so that its end presses against the rotary adjustment mechanism; the second state is formed by loosening the set screw so that its end moves away from the rotary adjustment mechanism.

3. The rotary switchable optical grading device according to claim 2, characterized in that, The rotary adjustment mechanism includes First rotating bushing; and The second rotating bushing is rotatably fitted inside the first rotating bushing and is coaxially arranged with the first rotating bushing. The set screw of the mode switching mechanism acts on the first rotating bushing.

4. The rotary switchable optical grading device according to claim 3, characterized in that, The grading and positioning mechanism includes A grooved element is fixedly connected to the second rotating bushing, and the circumferential surface of the grooved element near the end of the first rotating bushing is provided with a plurality of positioning grooves; The positioning body is movably disposed between the first rotating bushing and the grooved element; An elastic element provides a biasing force to the positioning body, causing it to press against the surface of the grooved element; Under the action of the elastic element, the positioning body can selectively engage with any of the positioning slots of the slotted element.

5. The rotary switchable optical grading device according to claim 4, characterized in that, The first rotating bushing has a radial hole, and the positioning body and the elastic element are housed in the radial hole.

6. The rotary switchable optical grading device according to claim 5, characterized in that, The positioning body is a steel ball, and the elastic element is a compression spring.

7. The rotary switchable optical grading device according to claim 4, characterized in that, The biasing force provided by the elastic element is configured such that, when the mode switching mechanism is in the second state, the minimum torque required to disengage the positioning body from the positioning groove is greater than the rotational friction torque of the continuous rotary support assembly under rated load.

8. The rotary switchable optical grading device according to claim 4, characterized in that, The grooved element has a scale plate on the end opposite to the first rotating bushing.

9. The rotary switchable optical grading device according to claim 1, characterized in that, The continuous rotary support assembly is a needle roller bearing, with its inner ring connected to the rotary adjustment mechanism and its outer ring connected to the fixed housing.

10. An optical device, characterized in that: Includes a rotary switchable adjustment device as described in any one of claims 1 to 9, used to adjust the direction or angle of optical elements in the optical device.

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