Device for switching between coarse and fine adjustment and optical apparatus

Abstract

The application discloses a device for switching coarse adjustment and fine adjustment and an optical equipment, and the device for switching coarse adjustment and fine adjustment comprises a fixed sleeve, an adjusting sleeve and an adjusting screw which are screwed from outside to inside in sequence, the adjusting screw is fixed with a load object, when the adjusting sleeve is locked with the fixed sleeve through a first locking part, the adjusting screw rotates relative to the adjusting sleeve, the adjusting screw can move along a transverse direction relative to the fixed sleeve, when the adjusting sleeve is unlocked with the fixed sleeve, the adjusting sleeve and the adjusting screw are locked through a second locking part, the adjusting sleeve rotates relative to the fixed sleeve, the adjusting screw can move along the transverse direction relative to the fixed sleeve, and the first inner thread and the second inner thread are set with a pitch difference, so that the fine adjustment and the coarse adjustment can be realized respectively when the first linear motion stroke and the second linear motion stroke of the adjusting screw for driving the load object to move along the transverse direction are converted, and the problem that the fast switching between the fine adjustment and the coarse adjustment cannot be realized in the existing optical precision mechanical structure is solved.

Description

Technical Field

[0001] This invention relates to the field of optical equipment technology, and more particularly to a device and optical equipment for switching between coarse and fine adjustment. Background Technology

[0002] In optical precision mechanical structures, it is often necessary to make fine adjustments to a component, such as tilting, pitching, or translating, to regulate the optical path. In some adjustment scenarios, there are specific requirements for the speed of the adjustment process. For example, rapid adjustment is needed during the longer travel phase, while fine adjustment is required when approaching the target position. Summary of the Invention

[0003] The main objective of this invention is to provide a device and optical equipment for switching between coarse and fine adjustment, aiming to solve the problem that existing optical precision mechanical structures cannot achieve rapid switching between coarse and fine adjustment.

[0004] To achieve the above objectives, the present invention provides an apparatus for switching between coarse and fine adjustments, wherein the apparatus for switching between coarse and fine adjustments includes:

[0005] A fixing sleeve, wherein the inner wall of the fixing sleeve is provided with a first internal thread in a transverse direction;

[0006] An adjusting sleeve extends laterally. The outer wall of the adjusting sleeve is provided with a first external thread that engages with the first internal thread to be screwed onto the fixed sleeve. The inner wall of the adjusting sleeve is provided with a second internal thread.

[0007] An adjusting screw extends laterally and has a second external thread that mates with the second internal thread for screwing into the adjusting sleeve. The adjusting screw has a first end and a second end exposed outside the fixed sleeve. The first end of the adjusting screw is used to fix it to a load-bearing object.

[0008] The locking assembly includes a first locking part and a second locking part, wherein the first locking part is used to lock and unlock the adjusting sleeve and the fixed sleeve, and the second locking part is used to lock and unlock the adjusting screw and the adjusting sleeve;

[0009] The pitch difference between the first internal thread and the second internal thread is set such that when the adjusting sleeve is locked to the fixed sleeve, the adjusting screw is unlocked from the adjusting sleeve, so that when the adjusting screw is driven to rotate, the first rotational stroke of the adjusting screw relative to the adjusting sleeve is converted into the first linear motion stroke of the adjusting screw to drive the load object to move laterally. When the adjusting screw is locked to the adjusting sleeve, the adjusting sleeve is unlocked from the fixed sleeve, so that when the adjusting screw is driven to rotate, the second rotational stroke of the adjusting sleeve relative to the fixed sleeve is converted into the second linear motion stroke of the adjusting screw to drive the load object to move laterally.

[0010] Optionally, the fixing sleeve has an adjusting end and a fixing end in the lateral direction, and the outer peripheral wall of the adjusting end of the fixing sleeve is provided with a locking external thread;

[0011] The first locking part includes:

[0012] A first locking nut has a first end and a second end in a transverse direction. The inner circumferential wall of the first end of the locking nut is provided with a locking internal thread that mates with the locking external thread for screwing into the fixing sleeve. The inner circumferential wall of the second end of the locking nut is provided with a guide slope that slopes from the locking internal thread toward the adjusting sleeve in a direction away from the fixing sleeve.

[0013] A clamping sleeve extends laterally and has a first end and a second end in the lateral direction. The second end of the clamping sleeve is movably disposed in the inward and outward directions. The first end of the clamping sleeve is connected to the fixed sleeve. The second end of the clamping sleeve is located between the second end of the locking nut and the adjusting sleeve. The outer peripheral wall of the second end of the clamping sleeve forms a tapered guide surface adapted to the guide slope. During the rotational stroke of the first locking nut toward the fixed sleeve, the second end of the clamping sleeve abuts against the adjusting sleeve.

[0014] Optionally, the adjusting sleeve has a first adjusting section and a second adjusting section in the transverse direction, the outer peripheral wall of the first adjusting section and the outer peripheral wall of the second adjusting section are arranged with a height difference in the inner and outer directions, and the first external thread is provided on the outer peripheral wall of the first adjusting section.

[0015] The fixing sleeve has a first fixing section and a second fixing section in the transverse direction. The inner peripheral wall of the first fixing section and the inner peripheral wall of the second fixing section are arranged with a height difference in the inner and outer directions. The first internal thread is provided on the inner peripheral wall of the first fixing section.

[0016] The second adjusting section and the second fixing section are spaced apart in the inward and outward directions to form an installation space between the second adjusting section and the second fixing section;

[0017] The first end of the clamping sleeve is located in the installation space and is connected to the second fixing section.

[0018] Optionally, the outer peripheral wall of the first end of the clamping sleeve is formed with an anti-rotation plane;

[0019] The second fixed section has through holes in the inward and outward directions, and the through holes are arranged corresponding to the anti-rotation plane;

[0020] The first locking part further includes an anti-rotation member that is movable in the inward and outward directions. When the anti-rotation member moves inward, it abuts against the anti-rotation plane to restrict the rotation of the clamping sleeve.

[0021] Optionally, the inner wall surface of the through hole is provided with a connecting internal thread;

[0022] The anti-rotation component includes a set screw, which engages with the internal thread of the connection.

[0023] Optionally, the second locking part includes a second locking nut, the second locking nut being provided with a third internal thread that engages with the second external thread to be screwed onto the adjusting screw, and the second locking nut being provided with an abutment portion at the end near the adjusting sleeve;

[0024] The second locking nut has a travel stroke that approaches and moves away from the adjusting sleeve, so as to lock the adjusting screw and the adjusting sleeve when the abutting portion abuts against the end face of the adjusting sleeve, and to unlock the adjusting screw and the adjusting sleeve when the abutting portion moves away from the end face of the adjusting sleeve.

[0025] Optionally, the device for switching between coarse and fine adjustment further includes an end cap, which has a second mounting hole for the adjusting screw to pass through, and the end cap is located at the end of the fixing sleeve opposite to the second locking nut.

[0026] Optionally, the device for switching between coarse and fine adjustment further includes a mounting portion disposed at the first end of the adjusting screw, the mounting portion comprising:

[0027] A bearing, wherein the inner ring of the bearing is fixed to the first end of the adjusting screw;

[0028] A mounting base is provided at the end of the bearing opposite to the fixing sleeve. The mounting base has an annular mounting portion, which is fitted onto the outer ring of the bearing and fixedly connected to it. The outer peripheral wall of the annular mounting portion is provided with a third external thread.

[0029] The clamping cover has a first mounting hole for the adjusting screw to pass through. The clamping cover is located on the side of the bearing facing the fixed sleeve. The clamping cover has a mating part, and the mating part forms a fourth internal thread that is screwed into the third external thread.

[0030] Optionally, a handwheel is provided at the second end of the adjusting screw.

[0031] The present invention also provides an optical device, the optical device comprising a means for switching between coarse and fine adjustment and a load object, the load object being fixedly connected to the first end of the adjusting screw:

[0032] The device for switching between coarse and fine adjustment includes:

[0033] A fixing sleeve, wherein the inner wall of the fixing sleeve is provided with a first internal thread in a transverse direction;

[0034] An adjusting sleeve extends laterally. The outer wall of the adjusting sleeve is provided with a first external thread that engages with the first internal thread to be screwed onto the fixed sleeve. The inner wall of the adjusting sleeve is provided with a second internal thread.

[0035] An adjusting screw extends laterally and has a second external thread that mates with the second internal thread for screwing into the adjusting sleeve. The adjusting screw has a first end and a second end exposed outside the fixed sleeve. The first end of the adjusting screw is used to fix it to a load-bearing object.

[0036] The locking assembly includes a first locking part and a second locking part, wherein the first locking part is used to lock and unlock the adjusting sleeve and the fixed sleeve, and the second locking part is used to lock and unlock the adjusting screw and the adjusting sleeve;

[0037] The pitch difference between the first internal thread and the second internal thread is set such that when the adjusting sleeve is locked to the fixed sleeve, the adjusting screw is unlocked from the adjusting sleeve, so that when the adjusting screw is driven to rotate, the first rotational stroke of the adjusting screw relative to the adjusting sleeve is converted into the first linear motion stroke of the adjusting screw to drive the load object to move laterally. When the adjusting screw is locked to the adjusting sleeve, the adjusting sleeve is unlocked from the fixed sleeve, so that when the adjusting screw is driven to rotate, the second rotational stroke of the adjusting sleeve relative to the fixed sleeve is converted into the second linear motion stroke of the adjusting screw to drive the load object to move laterally.

[0038] In the technical solution provided by this invention, an adjusting screw is fixed to a load object, and a second external thread is provided on the adjusting screw. An adjusting sleeve is screwed to the adjusting screw. When the adjusting sleeve and the fixed sleeve are locked by a first locking part, the adjusting screw rotates relative to the adjusting sleeve, and the adjusting screw can move laterally relative to the fixed sleeve. When the adjusting sleeve and the fixed sleeve are unlocked, and the adjusting screw and the adjusting sleeve are locked by a second locking part, the adjusting sleeve rotates relative to the fixed sleeve, and the adjusting screw can move laterally relative to the fixed sleeve. By setting the pitch difference between the first internal thread and the second internal thread, one pitch is set to be larger and the other pitch is set to be smaller, so that when the first linear motion stroke and the second linear motion stroke of the adjusting screw are converted into the first linear motion stroke and the second linear motion stroke of the load object moving laterally, fine adjustment and coarse adjustment can be achieved respectively, thereby solving the problem that existing optical precision mechanical structures cannot achieve rapid switching between fine adjustment and coarse adjustment. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0040] Figure 1 A perspective view of an embodiment of the device for switching between coarse and fine adjustment provided by the present invention;

[0041] Figure 2 for Figure 1 A cross-sectional schematic diagram of the device for switching between coarse and fine adjustment.

[0042] Explanation of icon numbers:

[0043]

[0044] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0046] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0047] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0048] In optical precision mechanical structures, it is often necessary to make fine adjustments to a component, such as tilting, pitching, or translating, to regulate the optical path. In some adjustment scenarios, there are specific requirements for the speed of the adjustment process. For example, rapid adjustment is needed during the longer travel phase, while fine adjustment is required when approaching the target position.

[0049] To address the aforementioned problems, the present invention provides a device 100 for switching between coarse and fine adjustments. Figures 1 to 2 This is a specific embodiment of the device 100 for switching between coarse and fine adjustment provided by the present invention.

[0050] Please see Figures 1 to 2The device 100 for switching between coarse and fine adjustment includes a fixed sleeve 1, an adjusting sleeve 2, an adjusting screw 3, and a locking assembly. The inner wall of the fixed sleeve 1 has a first internal thread extending laterally. The adjusting sleeve 2 extends laterally, and its outer wall has a first external thread that engages with the first internal thread for screwing into the fixed sleeve 1. The inner wall of the adjusting sleeve 2 has a second internal thread. The adjusting screw 3 extends laterally, and its second external thread engages with the second internal thread for screwing into the adjusting sleeve 2. The adjusting screw 3 has a first end and a second end exposed outside the fixed sleeve 1. The first end of the adjusting screw 3 is used to fix a load object. The locking assembly includes a first locking part 4 and a second locking part 5. The first locking part 4 is used to lock the adjusting sleeve 2 and the fixed sleeve 1 together. The second locking part 5 is used to lock and unlock the adjusting screw 3 and the adjusting sleeve 2. The pitch difference between the first internal thread and the second internal thread is set such that when the adjusting sleeve 2 is locked to the fixed sleeve 1, the adjusting screw 3 is unlocked from the adjusting sleeve 2. This allows the first rotational stroke of the adjusting screw 3 relative to the adjusting sleeve 2 to be converted into a first linear motion stroke for the adjusting screw 3 to drive the load object laterally when the adjusting screw 3 is locked to the adjusting sleeve 2. Conversely, when the adjusting screw 3 is locked to the adjusting sleeve 2, the adjusting sleeve 2 is unlocked from the fixed sleeve 1. This allows the second rotational stroke of the adjusting sleeve 2 relative to the fixed sleeve 1 to be converted into a second linear motion stroke for the adjusting screw 3 to drive the load object laterally when the adjusting screw 3 is driven to rotate.

[0051] In the technical solution provided by this invention, the adjusting screw 3 is fixed to the load object, and a second external thread is provided on the adjusting screw 3. The adjusting sleeve 2 is screwed to the adjusting screw 3. When the adjusting sleeve 2 and the fixed sleeve 1 are locked by the first locking part 4, the adjusting screw 3 rotates relative to the adjusting sleeve 2, and the adjusting screw 3 can move laterally relative to the fixed sleeve 1. When the adjusting sleeve 2 and the fixed sleeve 1 are unlocked, and the adjusting screw 3 and the adjusting sleeve 2 are locked by the second locking part 5, the adjusting sleeve 2 rotates relative to the fixed sleeve 1, and the adjusting screw 3 can move laterally relative to the fixed sleeve 1. By setting the pitch difference between the first internal thread and the second internal thread, one pitch is set to be larger and the other pitch is set to be smaller, so that when the first linear motion stroke and the second linear motion stroke of the adjusting screw 3 are converted into the first linear motion stroke and the second linear motion stroke of the load object moving laterally, fine adjustment and coarse adjustment can be achieved respectively, so as to solve the problem that existing optical precision mechanical structures cannot achieve rapid switching between fine adjustment and coarse adjustment.

[0052] It should be noted that when using the device 100 for switching between coarse and fine adjustment, professional optical damping grease can be applied to the adjusting screw 3 to obtain a good feel for the thread clearance and to achieve zero backlash difference in the reciprocating motion.

[0053] Furthermore, in this embodiment, the pitch of the first internal thread is set to be greater than the pitch of the second internal thread. When the adjusting screw 3 rotates one revolution, and the adjusting sleeve 2 rotates one revolution relative to the fixed sleeve 1, because the pitch of the first internal thread is larger, the adjusting sleeve 2 can drive the adjusting screw 3 to have a larger stroke, thereby achieving rapid coarse adjustment. Similarly, when the adjusting screw 3 rotates one revolution, and the adjusting screw 3 rotates one revolution relative to the adjusting sleeve 2, because the pitch of the second internal thread is smaller, the stroke of the adjusting screw 3 is smaller, thereby achieving fine adjustment. This setting better matches the rotation stroke with the pitch, resulting in a more reasonable distribution.

[0054] Specifically, in this embodiment, the fixing sleeve 1 has an adjusting end and a fixing end in the lateral direction. The outer peripheral wall of the adjusting end of the fixing sleeve 1 is provided with a locking external thread. The first locking part 4 includes a first locking nut 41 and a clamping sleeve 42. The first locking nut 41 has a first end and a second end in the lateral direction. The inner peripheral wall of the first end of the locking nut is provided with a locking internal thread that engages with the locking external thread to screw into the fixing sleeve 1. The inner peripheral wall of the second end of the locking nut is provided with a guide slope 411. The guide slope 411 extends from the locking internal thread in a direction away from the fixing sleeve 1. The clamping sleeve 42 extends laterally and has a first end and a second end in the lateral direction. The second end of the clamping sleeve 42 is movably disposed in the inward and outward directions. The first end of the clamping sleeve 42 is connected to the fixed sleeve 1. The second end of the clamping sleeve 42 is located between the second end of the locking nut and the adjusting sleeve 2. The outer peripheral wall of the second end of the clamping sleeve 42 forms a tapered guide surface 421 that is adapted to the guide slope 411. During the rotation stroke of the first locking nut 41 toward the fixed sleeve 1, the second end of the clamping sleeve 42 abuts against the adjusting sleeve 2. With this configuration, by rotating the first locking nut 41, as the first locking nut 41 gradually approaches the fixed sleeve 1, converting the relative rotational stroke of the locking external thread and the locking internal thread into the linear motion stroke of the first locking nut 41, the guide inclined surface 411 abuts against the conical guide surface 421. Because the conical guide surface 421 is subjected to a downward resisting force, as the conical guide surface 421 moves downward, it also holds against the outer wall surface of the adjusting sleeve 2, allowing the clamping sleeve 42 to gradually clamp the adjusting sleeve 2. Therefore, the adjusting sleeve 2 and the fixed sleeve 1 are fixedly connected through the clamping sleeve 42. When the adjusting screw 3 is rotated, the second external thread of the adjusting screw 3 engages with the second internal thread of the adjusting sleeve 2, enabling the first linear motion stroke to be achieved. When unlocking is required, the first locking nut 41 can be rotated to move away from the fixed sleeve 1. The guide slope 411 and the tapered guide surface 421 move away from each other, and the resistance between them is released, so that the second end of the clamping sleeve 42 is unlocked.

[0055] Specifically, to facilitate the processing and installation of the clamping sleeve 42, enabling it to cooperate with the adjusting sleeve 2 and the fixing sleeve 1, in this embodiment, the adjusting sleeve 2 has a first adjusting section 21 and a second adjusting section 22 in the transverse direction. The outer peripheral wall of the first adjusting section 21 and the outer peripheral wall of the second adjusting section 22 are arranged with a height difference in the inward and outward directions, and the first external thread is provided on the outer peripheral wall of the first adjusting section 21. The fixing sleeve 1 has a first fixing section 11 and a second fixing section 12 in the transverse direction. The inner peripheral wall of the first fixing section 11 and the inner peripheral wall of the second fixing section 12 are arranged with a height difference in the inward and outward directions, and the first internal thread is provided on the inner peripheral wall of the first fixing section 11. The second adjusting section 22 and the second fixing section 12 are spaced apart in the inward and outward directions to form an installation space between them. The first end of the clamping sleeve 42 is located in the installation space and connected to the second fixing section 12. This arrangement makes the structure of the device 100 for switching between coarse and fine adjustment more compact and reasonable.

[0056] Furthermore, in order to ensure that the first end of the clamping sleeve 42 and the fixed sleeve 1 remain relatively fixed and to prevent circumferential rotation, in this embodiment, the outer peripheral wall of the first end of the clamping sleeve 42 is formed with an anti-rotation plane 422, and the second fixed section 12 is provided with a connecting internal thread in the inward and outward directions. The connecting internal thread is correspondingly provided with the anti-rotation plane 422. The first locking part 4 also includes an anti-rotation set screw 43, which is threadedly engaged with the connecting internal thread. When the anti-rotation set screw 43 rotates, it moves inward and abuts against the anti-rotation plane 422. When the clamping sleeve 42 has a tendency to rotate relative to the fixed sleeve 1, the anti-rotation set screw 43 abuts against the anti-rotation plane 422, restricting the rotation of the clamping sleeve 42. When unlocking is required, the first locking nut 41 is rotated so that the first locking nut 41 gradually moves away from the clamping sleeve 42, thereby releasing the clamping force and friction between the first end of the clamping sleeve 42 and the adjusting sleeve 2, and thus unlocking the first end of the clamping sleeve 42.

[0057] Specifically, in this embodiment, the second locking part 5 includes a second locking nut 51. The second locking nut 51 is provided with a third internal thread that engages with the second external thread to be screwed onto the adjusting screw 3. The second locking nut 51 has an abutment portion at the end near the adjusting sleeve 2. The second locking nut 51 has a movement stroke that approaches and moves away from the adjusting sleeve 2, so that when the abutment portion abuts against the end face of the adjusting sleeve 2, the adjusting screw 3 and the adjusting sleeve 2 are locked, and when the abutment portion moves away from the end face of the adjusting sleeve 2, the adjusting screw 3 and the adjusting sleeve 2 are unlocked.

[0058] It is understandable that although the third internal thread of the second locking nut 51 and the second internal thread of the adjusting sleeve 2 are both threaded with the second external thread of the adjusting screw 3, indicating that the pitch and other parameters of the second locking nut 51 and the adjusting sleeve 2 are theoretically consistent, when the end faces of the second locking nut 51 and the adjusting sleeve 2 are pressed together, a large frictional force will be formed between the two end faces. At the same time, the second locking nut 51 applies an axial thrust to the adjusting sleeve 2, and the second locking nut 51 receives an opposite axial thrust. This axial thrust increases the transmission frictional force of the threaded pair between the adjusting screw 3, the second locking nut 51 and the adjusting sleeve 2, thereby causing the adjusting screw 3, the adjusting sleeve 2 and the second locking nut 51 to form a locked state. Therefore, when the adjusting screw 3 is rotated, the adjusting screw 3 drives the adjusting sleeve 2 to rotate relative to the fixed sleeve 1. When unlocking is required, simply rotate the second locking nut 51 in the opposite direction so that the abutting part is away from the end face of the adjusting sleeve 2, thereby unlocking the adjusting screw 3 and the adjusting sleeve 2.

[0059] Furthermore, in order to achieve the purpose of dust prevention, in this embodiment, the device 100 for switching between coarse and fine adjustment also includes an end cover 6. The end cover 6 has a second mounting hole for the adjusting screw 3 to pass through. The end cover 6 is located at the end of the fixing sleeve 1 opposite to the second locking nut 51.

[0060] Furthermore, in this embodiment, the device 100 for switching between coarse and fine adjustment further includes a mounting portion 7 disposed at the first end of the adjusting screw 3. The mounting portion 7 includes a bearing 71, a mounting seat 72, and a clamping cover 73. The inner ring of the bearing 71 is fixed to the first end of the adjusting screw 3. The mounting seat 72 is disposed at the end of the bearing 71 away from the fixing sleeve 1. The mounting seat 72 forms an annular mounting portion 721, which is sleeved on the outer ring of the bearing 71 and is connected to the outer ring of the bearing 71. The bearing 71 provides support to the first end of the adjusting screw 3 through a ring-shaped fixed connection. To secure the bearing 71 to the mounting base 72, a third external thread is provided on the outer peripheral wall of the annular mounting portion 721. The clamping cover 73 has a first mounting hole through which the adjusting screw 3 passes. The clamping cover 73 is located on the side of the bearing 71 facing the fixing sleeve 1 and has a mating portion with a fourth internal thread that engages with the third external thread. Thus, after assembling the bearing 71 and the adjusting screw 3, the clamping cover 73 is screwed onto the outer peripheral wall of the annular mounting portion 721, fixing the bearing 71 between the mounting base 72 and the clamping cover 73. It should be noted that the bearing 71 is preferably a double-row angular contact bearing 71.

[0061] Furthermore, in this embodiment, a handwheel 8 is provided at the second end of the adjusting screw 3. By providing the handwheel 8, the torque is increased, making it easier and more convenient to drive the adjusting screw 3 to rotate.

[0062] The present invention also provides an optical device, which includes a device 100 for switching between coarse and fine adjustment and a load object, the load object being fixedly connected to the first end of the adjusting screw 3. The specific structure of the device 100 for switching between coarse and fine adjustment is as described in the above embodiments. Since the device 100 for switching between coarse and fine adjustment in this optical device adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be elaborated further here.

[0063] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A device for switching between coarse and fine adjustment, characterized in that, include: A fixing sleeve, wherein the inner wall of the fixing sleeve is provided with a first internal thread in a transverse direction; An adjusting sleeve extends laterally. The outer wall of the adjusting sleeve is provided with a first external thread that engages with the first internal thread to be screwed onto the fixed sleeve. The inner wall of the adjusting sleeve is provided with a second internal thread. An adjusting screw extends laterally and has a second external thread that mates with the second internal thread for screwing into the adjusting sleeve. The adjusting screw has a first end and a second end exposed outside the fixed sleeve. The first end of the adjusting screw is used to fix it to a load-bearing object. The locking assembly includes a first locking part and a second locking part, wherein the first locking part is used to lock and unlock the adjusting sleeve and the fixed sleeve, and the second locking part is used to lock and unlock the adjusting screw and the adjusting sleeve; The pitch difference between the first internal thread and the second internal thread is set such that when the adjusting sleeve is locked to the fixed sleeve, the adjusting screw is unlocked from the adjusting sleeve, so that when the adjusting screw is driven to rotate, the first rotational stroke of the adjusting screw relative to the adjusting sleeve is converted into the first linear motion stroke of the adjusting screw to drive the load object to move laterally. When the adjusting screw is locked to the adjusting sleeve, the adjusting sleeve is unlocked from the fixed sleeve, so that when the adjusting screw is driven to rotate, the second rotational stroke of the adjusting sleeve relative to the fixed sleeve is converted into the second linear motion stroke of the adjusting screw to drive the load object to move laterally.

2. The device for switching between coarse and fine adjustment as described in claim 1, characterized in that, The pitch of the first internal thread is set to be greater than the pitch of the second internal thread.

3. The device for switching between coarse and fine adjustment as described in claim 1, characterized in that, The fixing sleeve has an adjusting end and a fixing end in the lateral direction, and the outer peripheral wall of the adjusting end of the fixing sleeve is provided with a locking external thread; The first locking part includes: A first locking nut has a first end and a second end in a transverse direction. The inner circumferential wall of the first end of the locking nut is provided with a locking internal thread that mates with the locking external thread for screwing into the fixing sleeve. The inner circumferential wall of the second end of the locking nut is provided with a guide slope that presses against the locking internal thread from the locking internal thread in a direction away from the fixing sleeve, towards the adjusting sleeve. A clamping sleeve extends laterally and has a first end and a second end in the lateral direction. The second end of the clamping sleeve is movably disposed in the inward and outward directions. The first end of the clamping sleeve is connected to the fixed sleeve. The second end of the clamping sleeve is located between the second end of the locking nut and the adjusting sleeve. The outer peripheral wall of the second end of the clamping sleeve forms a tapered guide surface adapted to the guide slope. During the rotational stroke of the first locking nut toward the fixed sleeve, the second end of the clamping sleeve abuts against the adjusting sleeve.

4. The device for switching between coarse and fine adjustment as described in claim 3, characterized in that, The adjusting sleeve has a first adjusting section and a second adjusting section in the transverse direction. The outer peripheral wall of the first adjusting section and the outer peripheral wall of the second adjusting section are arranged with a height difference in the inward and outward directions. The first external thread is provided on the outer peripheral wall of the first adjusting section. The fixing sleeve has a first fixing section and a second fixing section in the transverse direction. The inner peripheral wall of the first fixing section and the inner peripheral wall of the second fixing section are arranged with a height difference in the inner and outer directions. The first internal thread is provided on the inner peripheral wall of the first fixing section. The second adjusting section and the second fixing section are spaced apart in the inward and outward directions to form an installation space between the second adjusting section and the second fixing section; The first end of the clamping sleeve is located in the installation space and is connected to the second fixing section.

5. The device for switching between coarse and fine adjustment as described in claim 4, characterized in that, The outer peripheral wall of the first end of the clamping sleeve has an anti-rotation plane. The second fixed section is provided with a connecting internal thread in the inward and outward directions, and the connecting internal thread is provided corresponding to the anti-rotation plane; The first locking part further includes an anti-rotation set screw, which is threadedly engaged with the connecting internal thread to abut against the anti-rotation plane when the anti-rotation set screw rotates inward, thereby restricting the rotation of the clamping sleeve.

6. The device for switching between coarse and fine adjustment as described in claim 1, characterized in that, The second locking part includes a second locking nut, which has a third internal thread that engages with the second external thread to be screwed onto the adjusting screw. The second locking nut has an abutment portion at its end near the adjusting sleeve. The second locking nut has a travel stroke that approaches and moves away from the adjusting sleeve, so as to lock the adjusting screw and the adjusting sleeve when the abutting portion abuts against the end face of the adjusting sleeve, and to unlock the adjusting screw and the adjusting sleeve when the abutting portion moves away from the end face of the adjusting sleeve.

7. The apparatus for switching between coarse and fine adjustment as described in claim 6, characterized in that, The device for switching between coarse and fine adjustment also includes an end cap, which has a second mounting hole for the adjusting screw to pass through, and the end cap is located at the end of the fixing sleeve opposite to the second locking nut.

8. The apparatus for switching between coarse and fine adjustment as described in claim 1, characterized in that, The device for switching between coarse and fine adjustment further includes a mounting portion disposed at the first end of the adjusting screw, the mounting portion comprising: A bearing, wherein the inner ring of the bearing is fixed to the first end of the adjusting screw; A mounting base is provided at the end of the bearing opposite to the fixing sleeve. The mounting base has an annular mounting portion, which is fitted onto the outer ring of the bearing and fixedly connected to it. The outer peripheral wall of the annular mounting portion is provided with a third external thread. The clamping cover has a first mounting hole for the adjusting screw to pass through. The clamping cover is located on the side of the bearing facing the fixed sleeve. The clamping cover has a mating part, and the mating part forms a fourth internal thread that is screwed into the third external thread.

9. The device for switching between coarse and fine adjustment as described in claim 1, characterized in that, A handwheel is provided at the second end of the adjusting screw.

10. An optical device, characterized in that, include: The device for switching between coarse and fine adjustment is configured as the device for switching between coarse and fine adjustment as described in any one of claims 1 to 9; as well as, The load object is fixedly connected to the first end of the adjusting screw.

Images