Microscope objective turret and microscope

Abstract

A microscope objective turret and a microscope. The microscope objective turret comprises a support base (1), a rotating sleeve (2) rotatably connected to the support base (1), a revolving nosepiece (3) fixed to the rotating sleeve (2), and a support member (4) separately connected to the support base (1) and the revolving nosepiece (3). The support member (4) comprises a first inner ring (41) fixed to the support base (1), a first outer ring (42) fixed to the revolving nosepiece (3) and defining a first raceway (45) together with the first inner ring (41), and a plurality of first balls (43) accommodated in the first raceway (45). The support member (4) further comprises an annular retainer (44) accommodated in the first raceway (45), the annular retainer (44) is provided with a plurality of positioning holes (441) distributed at intervals in the circumferential direction of the first raceway (45), and the plurality of first balls (43) are fitted in the plurality of positioning holes (441) in one-to-one correspondence. Such a support member (4) constitutes a four-point contact bearing, and exhibits higher precision and rigidity, so that the microscope objective turret achieves improved precision, and finished product performance of the microscope objective turret is enhanced.

Description

A microscope objective stage and microscope Technical Field

[0001] This invention relates to the field of microscopy, and more particularly to a microscope objective stage and a microscope. Background Technology

[0002] In related technologies, microscope objective switching devices utilize a rotatable turntable to rotate the objective lens, enabling the switching between different objectives. Both the inner and outer rings of the turntable are supported by bearings. The central hole of the turntable is machined into a stepped shape, forming a conical surface with the ball bearing mounting surface of the motor support fixed to the base. A suitable number of balls are placed between the turntable surface and the motor support, forming a three-point contact bearing with the conical surface of the motor support and the stepped central hole of the turntable. In other words, the inner ring of the turntable is supported by a three-point contact bearing. However, the precision and rigidity of three-point contact bearings are relatively poor, resulting in poor overall performance of the microscope objective turntable.

[0003] Therefore, it is necessary to provide a new microscope objective stage. Technical issues

[0004] The purpose of this invention is to provide a microscope objective stage and microscope that can solve the technical problem of poor accuracy and rigidity in the inner ring of the turntable due to the use of a three-point contact bearing for support in related technologies. Technical solutions

[0005] The technical solution of the present invention is as follows:

[0006] A microscope objective stage includes a support, a rotating sleeve rotatably connected to the support, a turntable fixed to the rotating sleeve, and a support member connected to the support and the turntable respectively. The support member includes a first inner ring fixed to the support, a first outer ring fixed to the turntable and forming a first raceway with the first inner ring, and a plurality of first balls housed in the first raceway. The support member also includes an annular retainer housed in the first raceway. The annular retainer has a plurality of positioning holes spaced apart along the circumferential direction of the first raceway, and the plurality of first balls are fitted one-to-one into the plurality of positioning holes.

[0007] Optionally, one side of the annular retainer is provided with an insertion groove communicating with the positioning hole. The insertion groove is provided with a first sidewall and a second sidewall spaced apart in the circumferential direction of the annular retainer. The distance between the first sidewall and the second sidewall is greater than the diameter of the positioning hole.

[0008] Optionally, the distance between the first sidewall and the second sidewall gradually decreases in the direction from the first inner ring to the first outer ring.

[0009] Optionally, the annular retainer has a first gap with the side of the first inner ring near the first outer ring, and the annular retainer has a second gap with the side of the first outer ring near the first inner ring.

[0010] Optionally, the first inner ring is provided with a first annular groove on the side near the first outer ring, and the first outer ring is provided with a second annular groove on the side near the first inner ring. Both the first annular groove and the second annular groove are adapted to the first ball, and the first annular groove and the second annular groove together form the first raceway.

[0011] Optionally, the turntable is provided with a mounting hole, at least part of the support and the support member are received in the mounting hole, and the first inner ring is sleeved and fixed on the outside of the support, and the first outer ring is embedded in the mounting hole.

[0012] Optionally, a first limiting part is provided on the inner peripheral wall of the mounting hole, and a second limiting part is provided on the outer side of the support. The first limiting part and the second limiting part are spaced apart in the axial direction of the support member, and the first outer ring abuts against the first limiting part, and the first inner ring abuts against the second limiting part.

[0013] Optionally, the support member further includes a base fixed to the support and forming a second raceway with the turntable, and a plurality of second balls housed within the second raceway, wherein the diameter of the first raceway is smaller than the diameter of the second raceway.

[0014] Optionally, the second raceway has a bottom wall opposite to the base, and a third side wall and a fourth side wall connected to the bottom wall and opposite to each other. The third side wall is closer to the support and is inclined toward the support.

[0015] A microscope comprising a microscope objective stage as described in any of the above. Beneficial effects

[0016] The beneficial effects of this invention are as follows: by setting an annular retainer between the first outer ring and the first inner ring, and assembling the multiple first balls in the first raceway one-to-one into the multiple positioning holes on the annular retainer, the support is a four-point contact bearing. Compared with the three-point contact bearing in related technologies, the four-point contact bearing has higher precision and rigidity, thereby making the microscope objective turntable more precise and improving the finished performance of the microscope objective turntable; moreover, it can also reduce the material and processing requirements of the support and turntable, which is conducive to reducing costs. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the structure of the microscope objective stage provided by the present invention;

[0018] Figure 2 is a cross-sectional view along direction AA in Figure 1;

[0019] Figure 3 is an enlarged view of detail B in Figure 2;

[0020] Figure 4 is an enlarged view of detail C in Figure 2;

[0021] Figure 5 is a schematic diagram of the assembly between the turntable, the support member and the second ball provided by the present invention.

[0022] Figure 6 is a structural schematic diagram of the support member provided by the present invention;

[0023] Figure 7 is an exploded view of the support member provided by the present invention. Embodiments of the present invention

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] The present invention provides a microscope, including a microscope objective stage, an eyepiece and a plurality of objectives disposed on the microscope objective stage, wherein the plurality of objectives are distributed circumferentially at intervals, and each objective has a different magnification. When operating the microscope objective stage, the objective can be rotated circumferentially, so that the eyepiece can be matched with the objective with different magnification.

[0026] Please refer to Figures 1 to 7. The microscope objective stage includes a support 1, a rotating sleeve 2 rotatably connected to the support 1, a turntable 3 fixed to the rotating sleeve 2, and a support member 4 connected to the support 1 and the turntable 3 respectively. The support member 4 includes a first inner ring 41 fixed to the support 1, a first outer ring 42 fixed to the turntable 3 and forming a first raceway 45 with the first inner ring 41, and a plurality of first balls 43 housed within the first raceway 45. The support member 4 also includes an annular retainer 44 housed within the first raceway 45. The annular retainer 44 has a plurality of positioning holes 441 spaced apart along the circumferential direction of the first raceway 45, and the plurality of first balls 43 are fitted one-to-one into the plurality of positioning holes 441.

[0027] By setting an annular retainer 44 between the first outer ring 42 and the first inner ring 41, and assembling the multiple first balls 43 in the first raceway 45 one-to-one into the multiple positioning holes 441 on the annular retainer 44, the support member 4 becomes a four-point contact bearing. Compared with the three-point contact bearing in related technologies, the four-point contact bearing has higher precision and rigidity, thereby making the microscope objective turntable more precise and improving the finished performance of the microscope objective turntable. Moreover, it can also reduce the material and processing requirements of the support 1 and the turntable 3, which is conducive to reducing costs.

[0028] It should be noted that the multiple positioning holes 441 on the annular retainer 44 are preferably distributed at equal intervals. The first ball 43 can be a steel ball. The number of the first ball 43 is the same as the number of positioning holes 441. The number of the first ball 43 can be set according to actual needs. For example, the number of the first ball 43 can be five, ten, twelve, twenty, thirty, etc.

[0029] Please refer to Figures 6 and 7. One side of the annular retainer 44 is provided with an insertion groove 442 communicating with the positioning hole 441. The insertion groove 442 has first sidewalls 443 and second sidewalls 444 spaced apart in the circumferential direction of the annular retainer 44. The distance between the first sidewalls 443 and the second sidewalls 444 is greater than the diameter of the positioning hole 441, making the groove width of the insertion groove 442 greater than the diameter of the positioning hole 441. The diameter of the positioning hole 441 is adapted to the diameter of the first ball 43, thus facilitating the passage of the first ball 43 through the insertion groove 442 and its assembly within the positioning hole 441. Furthermore, the insertion groove 442 also guides the first ball 43 as it is assembled within the positioning hole 441.

[0030] It should be noted that during the assembly of the support component 4, the first ball 43 can be assembled into the first raceway 45 first, and then the annular retainer 44 can be inserted into the first raceway 45. The first ball 43 will be inserted into the positioning hole 441 along the insertion groove 442, thereby completing the assembly of the support component 4. The assembly method is simple and convenient.

[0031] Please refer to Figures 6 and 7. In the direction from the first inner ring 41 to the first outer ring 42, the distance between the first sidewall 443 and the second sidewall 444 gradually decreases. This not only helps to prevent the first ball 43 from dislodging from the annular retainer 44, but also ensures the smooth rolling of the first ball 43 within the first raceway 45.

[0032] Please refer to Figures 3, 5, and 6. There is a first gap 46 between the annular retainer 44 and the side of the first inner ring 41 near the first outer ring 42, and a second gap 47 between the annular retainer 44 and the side of the first outer ring 42 near the first inner ring 41. This prevents the annular retainer 44 from contacting the first inner ring 41 and the first outer ring 42, thus avoiding the annular retainer 44 from hindering the relative movement between the first inner ring 41 and the first outer ring 42. Moreover, it also facilitates the first ball 43 to drive the annular retainer 44 to move within the first raceway 45.

[0033] Please refer to Figures 6 and 7. The first inner ring 41 has a first annular groove 411 on the side near the first outer ring 42, and the first outer ring 42 has a second annular groove 421 on the side near the first inner ring 41. Both the first annular groove 411 and the second annular groove 421 are adapted to the first ball 43, and together they form the first raceway 45. Both the first annular groove 411 and the second annular groove 421 are arc-shaped grooves. When the first ball 43 is accommodated within the first raceway 45, the groove shapes of the first annular groove 411 and the second annular groove 421 confine the first ball 43 within the first raceway 45.

[0034] Please refer to Figures 2, 3, and 5. The turntable 3 has a mounting hole 31. At least part of the support 1 and the support member 4 are received within the mounting hole 31. The first inner ring 41 is sleeved and fixed on the outer side of the support 1, and the first outer ring 42 is embedded in the mounting hole 31, so that the support member 4 can support the turntable 3 while ensuring that the turntable 3 can rotate relative to the support 1. Depending on the actual needs, the middle part of the support 1 is received within the mounting hole 31, and both ends of the support 1 are located outside the mounting hole 31.

[0035] Please refer to Figures 2 and 3. A first limiting part 32 is provided on the inner peripheral wall of the mounting hole 31, and a second limiting part 11 is provided on the outer side of the support 1. The first limiting part 32 and the second limiting part 11 are spaced apart in the axial direction of the support member 4, and the first outer ring 42 abuts against the first limiting part 32, and the first inner ring 41 abuts against the second limiting part 11. By providing the first limiting part 32 and the second limiting part 11, the support member 4 can be prevented from moving axially, thereby improving the stability of the turntable 3 rotation.

[0036] Please refer to Figures 1 and 2. The microscope objective stage also includes a drive source 6 fixed to the support 1 and a transmission mechanism 7 disposed on the support 1 and connected to the drive source 6 and the rotating sleeve 2 respectively. The transmission mechanism 7 includes a base 71 fixed to the end of the support 1 away from the first inner ring 41, a first gear 72 rotatably connected to the base 71 and connected to the drive source 6, and a second gear 73 fixed to the rotating sleeve 2 and meshing with the first gear 72. The rotating sleeve 2 is sleeved on the outside of the support 1 and is located on the side of the first outer ring 42 away from the first limiting part 32. The second gear 73 is located at the end of the rotating sleeve 2 away from the first outer ring 42. The drive source 6 can be a DC motor with output teeth. The drive source 6 drives the first gear 72 to rotate. The first gear 72 can be a planetary gear. There can be two first gears 72, which are located on opposite sides of the output teeth of the DC motor. Setting two first gears 72 is beneficial for stably transmitting the power of the drive source 6 to the second gear 73. The second gear 73 rotates in conjunction with the first gear 72 and drives the rotating sleeve 2 to rotate. The second gear 73 can provide deceleration and transmit power to the rotating sleeve 3. The rotating sleeve 2 drives the turntable 3 to rotate, so that the rotating sleeve 2 can transmit the power of the drive source 6 to the turntable 3.

[0037] Referring to Figures 2 and 4, the support member 4 also includes a base 5 fixed to the support 1 and forming a second raceway 33 with the turntable 3, and a plurality of second balls 8 housed within the second raceway 33. The diameter of the first raceway 45 is smaller than the diameter of the second raceway 33, that is, the first raceway 45 is located within the second raceway 33. The base 5, the second balls 8, and the turntable 3 form a two-point contact bearing, so that the turntable 3 can rotate relative to the base 5 while supporting the base 5. The number of second balls 8 is set according to actual needs, such as six, ten, fifteen, twenty, etc.

[0038] Please refer to Figures 2 and 4. The second raceway 33 is provided with a bottom wall 331 opposite to the base 5, and a third side wall 332 and a fourth side wall 333 connected to the bottom wall 331 and opposite to each other. The third side wall 332 is closer to the support member 4 and is inclined toward the support member 4 to facilitate the second ball 8 to roll in the second raceway 33.

[0039] It should be noted that the base 5 provides overall support for the microscope objective stage. Since the support member 4 is connected to both the support 1 and the turntable 3, it supports the rotation of the turntable 3. The second ball bearing 8 is located within the second raceway 33 and contacts both the turntable 3 and the base 5, providing vertical support to the turntable 3.

[0040] Please refer to Figures 1 and 2. The turntable 3 has multiple objective lens threaded holes 34, and multiple objectives are fitted into these holes one by one. The base 5 has an eyepiece threaded hole 51, and the eyepiece is fitted into this hole. When the drive source 6 drives the rotating sleeve 2 to rotate, and the turntable 3 rotates under the drive of the rotating sleeve 2, one of the multiple objectives can rotate to be directly opposite the eyepiece. This allows the eyepiece to be paired with objectives of different magnifications, thus enabling adjustment of the microscope's magnification.

[0041] The above description is merely an embodiment of the present invention. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of the present invention, but these improvements all fall within the protection scope of the present invention.

Claims

1. A microscope objective stage, comprising a support, a rotating sleeve rotatably connected to the support, a turntable fixed to the rotating sleeve, and a support member respectively connected to the support and the turntable, the support member comprising a first inner ring fixed to the support, a first outer ring fixed to the turntable and forming a first raceway with the first inner ring, and a plurality of first balls received within the first raceway, characterized in that, The support also includes an annular retainer housed within the first raceway. The annular retainer has a plurality of positioning holes spaced apart along the circumferential direction of the first raceway, and the plurality of first balls are fitted one-to-one into the plurality of positioning holes.

2. The microscope objective stage according to claim 1, characterized in that, The annular retainer has an insertion groove on one side that communicates with the positioning hole. The insertion groove has a first sidewall and a second sidewall that are spaced apart in the circumferential direction of the annular retainer. The distance between the first sidewall and the second sidewall is greater than the diameter of the positioning hole.

3. The microscope objective stage according to claim 2, characterized in that, The distance between the first sidewall and the second sidewall gradually decreases in the direction from the first inner ring to the first outer ring.

4. The microscope objective stage according to claim 1, characterized in that, The annular retainer has a first gap with the side of the first inner ring closest to the first outer ring, and the annular retainer has a second gap with the side of the first outer ring closest to the first inner ring.

5. The microscope objective stage according to claim 1, characterized in that, The first inner ring has a first annular groove on the side near the first outer ring, and the first outer ring has a second annular groove on the side near the first inner ring. Both the first annular groove and the second annular groove are adapted to the first ball, and the first annular groove and the second annular groove together form the first raceway.

6. The microscope objective stage according to claim 1, characterized in that, The turntable is provided with mounting holes, at least part of the support and the support member are received in the mounting holes, and the first inner ring is sleeved and fixed on the outside of the support, and the first outer ring is embedded in the mounting holes.

7. The microscope objective stage according to claim 6, characterized in that, A first limiting part is provided on the inner peripheral wall of the mounting hole, and a second limiting part is provided on the outer side of the support. The first limiting part and the second limiting part are spaced apart in the axial direction of the support member, and the first outer ring abuts against the first limiting part, and the first inner ring abuts against the second limiting part.

8. The microscope objective stage according to claim 1, characterized in that, The support also includes a base fixed to the support and forming a second raceway with the turntable, and a plurality of second balls housed in the second raceway, wherein the diameter of the first raceway is smaller than the diameter of the second raceway.

9. The microscope objective stage according to claim 8, characterized in that, The second raceway has a bottom wall opposite to the base, and a third side wall and a fourth side wall connected to the bottom wall and opposite to each other. The third side wall is closer to the support member and is inclined toward the support member.

10. A microscope, characterized in that, Includes the microscope objective stage as described in any one of claims 1-9.

Images