Rotary driving motor and optical adjusting device

Abstract

The utility model belongs to the technical field of driving motors, and discloses a rotary driving motor and an optical adjusting device. The rotation driving motor comprises a base, a fixing sleeve, a rotation assembly and a motor assembly, the fixing sleeve is fixedly connected to the base, the rotation assembly is rotatably arranged in the fixing sleeve, the motor assembly comprises a stator and a rotor, the rotor is fixedly arranged outside the rotation assembly in a sleeving mode, and the stator is arranged outside the rotor in a clearance sleeving mode and fixedly connected into the fixing sleeve. The stator comprises a coil yoke plate and a coil arranged in the coil yoke plate, and the rotor comprises a magnetic steel yoke plate and magnetic steel arranged outside the magnetic steel yoke plate. According to the rotation driving motor provided by the utility model, the motor assembly adopts a permanent magnet motor without an iron core, the noise is small, the torque ripple is small, and compared with a traditional rotation driving motor with an iron core, the rotation driving motor has the advantages of no cogging effect, higher positioning precision, small positioning force during movement, high safety degree, large thrust and low cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to drive motor technical field especially relates to a kind of rotary drive motor and optical adjusting device. BACKGROUND

[0002] In some mechanical equipment, it is usually needed to switch the angle of some components by rotary drive motor, for example, microscope usually adopts rotary drive motor to realize the angle switching of objective lens. In the prior art, rotary drive motor usually adopts conventional stepper motor, but noise is generated in the movement process, and stepper motor adopts coil winding with iron core, so that the motor has cogging effect, torque fluctuation is large, and position cannot be accurately controlled.

[0003] Therefore, it is urgent to provide a kind of rotary drive motor and optical adjusting device to solve the above problems. UTILITY MODEL CONTENT

[0004] One purpose of the utility model is to provide a kind of rotary drive motor, adopts permanent magnet motor without iron core, noise is small, without cogging effect, relative to the motor with iron core, positioning force is small when moving, safety degree is high, thrust is large and cost is low.

[0005] Another purpose of the utility model is to provide a kind of optical adjusting device, by adopting the above rotary drive motor, noise is small, without cogging effect, relative to the motor with iron core, positioning force is small when moving, safety degree is high, thrust is large and cost is low.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A kind of rotary drive motor, comprising:

[0008] Base and fixed sleeve, the fixed sleeve is fixedly connected on the base;

[0009] Rotary assembly, rotatably arranged in the fixed sleeve;

[0010] Motor assembly, including stator and mover, the mover fixed sleeve is arranged outside the rotary assembly, the stator gap sleeve is arranged outside the mover and is fixedly connected in the fixed sleeve, the stator includes coil yoke plate and coil arranged in the coil yoke plate, the mover includes magnetic steel yoke plate and magnetic steel arranged outside the magnetic steel yoke plate. As an optional solution, bearing is arranged between the rotary assembly and the fixed sleeve, the inner ring of the bearing cooperates with the rotary assembly, and the outer ring of the bearing cooperates with the fixed sleeve.

[0011] As an optional solution, a first slot is formed on the outer periphery of the rotating assembly, and a second slot is formed on the inner periphery of the fixed sleeve. The first slot and the second slot are opposite to each other and jointly form a receiving slot for receiving the bearing.

[0012] As an optional solution, the rotating assembly comprises:

[0013] A rotating shaft is located in the fixed sleeve, and the rotor fixed sleeve is arranged outside the rotating shaft;

[0014] A mounting disc is fixedly connected to one end of the rotating shaft away from the base and partially located outside the fixed sleeve. The mounting disc is pressed against the inner ring of the bearing.

[0015] As an optional solution, the rotating drive motor further comprises a compression ring;

[0016] The mounting disc, the fixed sleeve, and the bearing jointly form a receiving space, the compression ring is arranged in the receiving space and fixedly connected to the fixed sleeve. The compression ring is pressed against the outer ring of the bearing.

[0017] Alternatively, the compression ring is arranged between the mounting disc and the fixed sleeve. The compression ring is fixedly connected to the fixed sleeve and pressed against the outer ring of the bearing.

[0018] As an optional solution, the mounting disc comprises a mounting disc body and a shielding part. The mounting disc body is fixedly connected to the rotating shaft and pressed against the inner ring of the bearing. The shielding part is connected to the outer periphery of the mounting disc body and shields the upper side of the compression ring.

[0019] As an optional solution, the mounting disc further comprises a positioning protrusion. The positioning protrusion is connected to one side of the inner periphery of the mounting disc body close to the rotating shaft. The outer diameter of the positioning protrusion is smaller than the outer diameter of the mounting disc body.

[0020] As an optional solution, the rotating shaft is provided with a positioning slot at one end close to the mounting disc. The positioning protrusion is inserted into the positioning slot.

[0021] As an optional solution, the rotating drive motor further comprises a detection assembly. The detection assembly comprises:

[0022] A glass code disc is fixedly connected to the bottom of the rotating assembly.

[0023] A reading head is used to read the values on the glass code disc.

[0024] As an optional scheme, the detection component further comprises a mounting seat fixedly connected to the base or the fixing sleeve, and the reading head is fixedly connected to the mounting seat.

[0025] An observation opening is formed in the mounting seat, and the reading head can read the value on the glass code disc through the observation opening.

[0026] As an optional scheme, a receiving cavity is formed in the base, and the mounting seat and the reading head are located in the receiving cavity.

[0027] As an optional scheme, a through hole is formed in the center of the rotary drive motor, and the through hole penetrates the rotary component and the base in the axial direction.

[0028] An optical adjustment device comprises the optical component and the rotary drive motor, the optical component is fixedly connected to the rotary component, and the motor component drives the optical component to rotate through the rotary component.

[0029] The utility model discloses a beneficial effect:

[0030] The utility model provides a rotary drive motor, adopts the permanent magnet motor of no iron core, and coil produces magnetic field after electrification, and the magnetic steel on the rotator produces the effect, drives the rotator to rotate, and the rotator drives rotary component to rotate relative to the base and the fixed sleeve around the axis, to realize the angle switching of objective lens on the rotary component.

[0031] The utility model also provides an optical adjustment device, through setting above -mentioned rotary drive motor, be used for realizing the angle switching of objective lens, to reach the extinction effect, when using, noise is small, and torque fluctuation is smaller, and relative to the rotary drive motor of traditional iron core, no tooth groove effect, and the positioning accuracy is higher, and the positioning force is small when moving, and the degree of safety is high, and the thrust is big and the cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is the structure schematic diagram of the rotary drive motor provided by the utility model embodiment;

[0033] Figure 2 It is the explosion drawing of the rotary drive motor provided by the utility model embodiment;

[0034] Figure 3 It is the axial section view of the rotary drive motor provided by the utility model embodiment.

[0035] In the drawing:

[0036] 1, base; 11, accommodating cavity; 2, fixing sleeve; 21, second groove; 3, rotating assembly; 31, rotating shaft; 311, first groove; 312, positioning groove; 32, mounting disc; 321, mounting disc body; 322, shielding part; 323, positioning protrusion; 4, motor assembly; 41, stator; 411, coil yoke plate; 412, coil; 42, rotor; 421, magnetic steel yoke plate; 422, magnetic steel; 5, bearing; 6, accommodating groove; 7, pressing ring; 8, detection assembly; 81, glass code disc; 82, mounting seat; 821, observation port; 83, reading head; 9, through hole. DETAILED DESCRIPTION

[0037] The utility model will be described in further detail below in combination with the drawings and examples. It can be understood that the specific examples described here are only used to explain the utility model, and not to limit the utility model. In addition, it needs to be pointed out that in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all the structures.

[0038] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0039] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0040] In the description of the embodiment, the terms "up", "down", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0041] The embodiment provides a rotary drive motor which can be applied to a microscope and used for angle switching of an objective lens to achieve extinction and the like. In other embodiments, the rotary drive motor can also be applied to any other device with a rotation requirement, which is not limited herein. The embodiment takes the rotary drive motor used for angle switching of the objective lens as an example for description.

[0042] Specifically, as shown in the figure, Figures 1 to 3 The rotary drive motor comprises a base 1, a fixed sleeve 2, a rotating assembly 3 and a motor assembly 4. The fixed sleeve 2 is a sleeve structure and has a square shape. A circular hole is formed in the fixed sleeve 2 and penetrates through the upper and lower ends. The fixed sleeve 2 is fixedly connected to the base 1 by bolts. The rotating assembly 3 is rotatably arranged in the fixed sleeve 2. The motor assembly 4 comprises a stator 41 and a rotor 42. The rotor 42 is fixedly sleeved outside the rotating assembly 3. The stator 41 is gap-sleeved outside the rotor 42 and fixedly connected in the fixed sleeve 2. The stator 41 comprises a coil yoke plate 411 and a coil 412 arranged in the coil yoke plate 411. The rotor 42 comprises a magnetic steel yoke plate 421 and a magnetic steel 422 arranged outside the magnetic steel yoke plate 421.

[0043] In the embodiment, the motor assembly 4 is a coreless permanent magnet motor. After the coil 412 is electrified, a magnetic field is generated and acts on the magnetic steel 422 on the rotor 42 to drive the rotor 42 to rotate. The rotor 42 drives the rotating assembly 3 to rotate relative to the base 1 and the fixed sleeve 2 about an axis, so as to realize angle switching of the objective lens on the rotating assembly 3 and achieve the extinction effect. Since the embodiment adopts the coreless permanent magnet motor, the noise is small, the torque fluctuation is small, and compared with the traditional rotary drive motor with a core, the rotary drive motor has no cogging effect, higher positioning accuracy, small positioning force during movement, high safety, large thrust and low cost.

[0044] Further, as shown in the figures, Figure 2 and Figure 3 The rotating assembly 3 and the fixed sleeve 2 are provided with a bearing 5. The bearing 5 is a circular ring. Specifically, the bearing 5 comprises an inner ring, an outer ring and rolling elements such as balls arranged between the inner ring and the outer ring. The inner ring and the outer ring rotate relative to each other through the balls. The inner ring of the bearing 5 is matched with the rotating assembly 3, and the outer ring of the bearing 5 is matched with the fixed sleeve 2, so as to realize the connection of the rotating assembly 3 and the fixed sleeve 2 through the bearing 5. The rotating assembly 3 can drive the inner ring of the bearing 5 to rotate relative to the outer ring of the bearing 5. During the rotation of the rotating assembly 3, the bearing 5 is used for supporting the rotating assembly 3, reducing the friction force during the movement of the rotating assembly 3 and ensuring the rotation accuracy.

[0045] Specifically, as shown in the figure, Figures 1 to 3As shown, the rotating assembly 3 comprises a rotating shaft 31 and a mounting disc 32, the rotating shaft 31 is located in the fixed sleeve 2, the rotor 42 is fixedly arranged outside the rotating shaft 31, the mounting disc 32 is fixedly connected to one end of the rotating shaft 31 away from the base 1 by screws, and the edge of the mounting disc 32 is pressed against the inner ring of the bearing 5, thereby fixing the inner ring of the bearing 5.

[0046] Further, as shown in Figure 2 and Figure 3 , the rotating drive motor further comprises a pressing ring 7, the pressing ring 7 is arranged between the mounting disc 32 and the fixed sleeve 2, the pressing ring 7 is fixedly connected to the fixed sleeve 2 by bolts and is pressed against the outer ring of the bearing 5, thereby fixing the outer ring of the bearing 5. Through the cooperation of the mounting disc 32 and the pressing ring 7, the bearing 5 can be positioned and fixed, ensuring that the inner ring of the bearing 5 can rotate with the rotating shaft 31, thereby driving the mounting disc 32 to rotate stably.

[0047] In other embodiments, the mounting disc 32, the fixed sleeve 2 and the bearing 5 can be arranged to form a containing space, the pressing ring 7 is arranged in the containing space and is fixedly connected with the fixed sleeve 2, and the pressing ring 7 is pressed against the outer ring of the bearing 5, which also achieves the above-mentioned effect.

[0048] In an optional embodiment, as shown in Figure 3 , a first groove 311 is formed on the outer circumferential side of the rotating shaft 31, and a second groove 21 is formed on the inner circumferential side of the fixed sleeve 2, the first groove 311 and the second groove 21 are opposite to each other and jointly form a containing groove 6 for containing the bearing 5. The containing groove 6 is open at the top end, first, the containing groove 6 can position the installation of the bearing 5; second, the bearing 5 is embedded in the containing groove 6, so that the overall structure is more compact, and the radial size of the rotating drive motor can be reduced, making the rotating drive motor more miniaturized.

[0049] As shown in Figure 3 , the mounting disc 32 comprises a mounting disc body 321 and a shielding part 322, the mounting disc body 321 is fixedly connected with the rotating shaft 31 by bolts and is pressed against the inner ring of the bearing 5, and the shielding part 322 is connected to the outer periphery of the mounting disc body 321 and shields the upper side of the pressing ring 7. In this way, the shielding part 322 can shield the pressing ring 7 and the bolts connecting the pressing ring 7 and the fixed sleeve 2, and cannot be seen from the outside, thus improving the visual aesthetics.

[0050] Further, the mounting disc 32 further comprises a positioning protrusion 323 connected to one side of the inner periphery of the mounting disc body 321 close to the rotating shaft 31, and the outer diameter of the positioning protrusion 323 is smaller than the outer diameter of the mounting disc body 321. The end of the rotating shaft 31 close to the mounting disc 32 is provided with a positioning groove 312, and the positioning protrusion 323 is inserted into the positioning groove 312 when the mounting disc 32 and the rotating shaft 31 are installed. Through the insertion fit of the positioning protrusion 323 and the positioning groove 312, the position between the mounting disc 32 and the rotating shaft 31 can be positioned during assembly, which facilitates assembly and helps to improve assembly efficiency.

[0051] Further, as shown in Figure 2 and Figure 3 , the rotary drive motor further comprises a detection assembly 8, the detection assembly 8 comprising a glass code disc 81, a mounting seat 82 and a reading head 83, the glass code disc 81 being fixedly connected to the bottom of the rotating assembly 3, and the reading head 83 being used to read the values on the glass code disc 81. The mounting seat 82 is fixedly connected to the base 1 or the fixed sleeve 2, and the reading head 83 is fixedly connected to the mounting seat 82. The mounting seat 82 is provided with an observation opening 821, and the reading head 83 can read the values on the glass code disc 81 through the observation opening 821.

[0052] Specifically, in the present embodiment, as shown in Figure 3 , the glass code disc 81 is fixedly connected to the bottom end face of the rotating shaft 31, and in other embodiments, the glass code disc 81 can also be fixedly sleeved on the bottom end of the rotating shaft 31 without interfering with the mover 42. In the present embodiment, as shown in Figure 3 , the mounting seat 82 is fixedly connected to the bottom of the fixed sleeve 2 by bolts, and in other embodiments, the mounting seat 82 can also be fixed on the base 1 by bolts.

[0053] Since the glass code disc 81 is fixedly connected to the rotating shaft 31, the glass code disc 81 can rotate synchronously with the rotating shaft 31. During the rotation of the glass code disc 81, the reading head 83 reads the values on the glass code disc 81 through the observation opening 821, i.e. the rotation angle of the rotating shaft 31, to identify the position, thereby accurately positioning the movement position and ensuring the positioning accuracy.

[0054] In the present embodiment, as shown in Figure 2 and Figure 3 , the base 1 is provided with a receiving cavity 11, and the mounting seat 82 and the reading head 83 are located in the receiving cavity 11. By providing the receiving cavity 11, the reading head 83 and the mounting seat 82 can be embedded in the base 1, reducing the space occupation and making the structure more compact.

[0055] In the present embodiment, as shown in Figure 1 and Figure 3As shown, a through hole 9 is formed at the center of the rotary driving motor, the through hole 9 penetrates the rotary assembly 3 and the base 1 along the axial direction, specifically, as shown in the figure Figure 3 As shown, the through hole 9 penetrates the mounting disc 32, the rotary shaft 31, the glass code disc 81 and the base 1 along the axial direction in sequence. The through hole 9 can be used for light transmission, so that the object observed under the microscope is clearer.

[0056] The utility model also provides a kind of optical adjusting device, and the optical adjusting device includes the rotary driving motor as described above. The optical adjusting device further includes optical piece, and optical piece is fixedly connected to rotary assembly 3, and motor assembly 4 drives optical piece to rotate by rotary assembly 3.

[0057] In the embodiment, the optical piece is objective lens, the inner side wall of mounting disc 32 is provided with threaded structure, for matching connection objective lens, rotor 42 is connected with objective lens to rotate by mounting disc 32, to achieve extinction effect.

[0058] The optical adjusting device provided in the embodiment, by setting the rotary driving motor as described above, noise is small when using, torque fluctuation is smaller, and relative to traditional rotating driving motor with core, there is no tooth slot effect, positioning accuracy is higher, positioning force is small when moving, safety degree is high, thrust is large and cost is low.

[0059] In other embodiments, the optical piece can also be the combined structure of optical lens and optical frame, the upper surface of mounting disc 32 is provided with a plurality of fixing holes for fixedly connecting optical frame, optical lens is arranged in optical frame, and mounting disc 32 is driven by rotor 42 to rotate cooperatively with optical frame, to realize the adjustment of light passing through optical lens on frame.

[0060] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and not the limitation of the embodiments of the utility model. For ordinary skilled person in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, it is not necessary and impossible to enumerate all embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claims.

Claims

1. A rotary drive motor characterized by, include: A base (1) and a fixing sleeve (2), wherein the fixing sleeve (2) is fixedly connected to the base (1); The rotating component (3) is rotatably disposed within the fixed sleeve (2); The motor assembly (4) includes a stator (41) and a mover (42). The mover (42) is fixedly sleeved outside the rotating assembly (3). The stator (41) is gapped outside the mover (42) and fixedly connected inside the fixed sleeve (2). The stator (41) includes a coil yoke plate (411) and a coil (412) disposed inside the coil yoke plate (411). The mover (42) includes a magnet yoke plate (421) and a magnet (422) disposed outside the magnet yoke plate (421).

2. The rotary drive motor according to claim 1, characterized in that, A bearing (5) is provided between the rotating component (3) and the fixed sleeve (2). The inner ring of the bearing (5) cooperates with the rotating component (3), and the outer ring of the bearing (5) cooperates with the fixed sleeve (2).

3. The rotary drive motor according to claim 2, characterized in that, The outer periphery of the rotating component (3) is provided with a first groove (311), and the inner periphery of the fixed sleeve (2) is provided with a second groove (21). The first groove (311) and the second groove (21) are opposite to each other and together form a receiving groove (6) for accommodating the bearing (5).

4. The rotary drive motor according to claim 2, characterized in that, The rotating component (3) includes: A rotating shaft (31) is located inside the fixed sleeve (2), and a moving part (42) is fixedly sleeved outside the rotating shaft (31); Mounting disc (32) is fixedly connected to the end of the rotating shaft (31) away from the base (1) and partially located outside the fixing sleeve (2). The mounting disc (32) presses against the inner ring of the bearing (5).

5. The rotary drive motor according to claim 4, characterized in that, The rotary drive motor also includes a pressure ring (7); The mounting plate (32), the fixing sleeve (2) and the bearing (5) surround and form an accommodating space. The pressure ring (7) is placed in the accommodating space and is fixedly connected to the fixing sleeve (2). The pressure ring (7) presses against the outer ring of the bearing (5). Alternatively, the pressure ring (7) is disposed between the mounting plate (32) and the fixing sleeve (2), and the pressure ring (7) is fixedly connected to the fixing sleeve (2) and presses against the outer ring of the bearing (5).

6. The rotary drive motor according to claim 5, characterized in that, The mounting plate (32) includes a mounting plate body (321) and a shielding part (322). The mounting plate body (321) is fixedly connected to the rotating shaft (31) and presses against the inner ring of the bearing (5). The shielding part (322) is connected around the outer periphery of the mounting plate body (321) and shields the upper side of the pressure ring (7).

7. The rotary drive motor according to claim 6, characterized in that, The mounting plate (32) further includes a positioning protrusion (323), which is connected to the inner periphery of the mounting plate body (321) near the rotating shaft (31), and the outer diameter of the positioning protrusion (323) is smaller than the outer diameter of the mounting plate body (321).

8. The rotary drive motor according to claim 7, characterized in that, The rotating shaft (31) has a positioning groove (312) at one end near the mounting plate (32), and the positioning protrusion (323) is inserted into the positioning groove (312).

9. The rotary drive motor according to claim 1, characterized in that, The rotary drive motor further includes a detection component (8), which includes: A glass code disk (81) is fixedly connected to the bottom of the rotating assembly (3); A reading head (83) is used to read the value on the glass code disk (81).

10. The rotary drive motor according to claim 9, characterized in that, The detection component (8) further includes a mounting base (82), which is fixedly connected to the base (1) or the fixing sleeve (2), and the reading head (83) is fixedly connected to the mounting base (82); The mounting base (82) is provided with an observation port (821), and the reading head (83) can read the value on the glass code disk (81) through the observation port (821).

11. The rotary drive motor according to claim 10, characterized in that, The base (1) has a receiving cavity (11), and the mounting base (82) and the reading head (83) are both located in the receiving cavity (11).

12. The rotary drive motor according to claim 1, characterized in that, A through hole (9) is provided at the center of the rotary drive motor, and the through hole (9) passes through the rotary assembly (3) and the base (1) axially.

13. An optical adjustment device, characterized in that, The device includes an optical component and a rotary drive motor as described in any one of claims 1-12, wherein the optical component is fixedly connected to the rotary assembly (3), and the motor assembly (4) drives the optical component to rotate through the rotary assembly (3).

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