CN112051663B - Back single-hand wheel focusing transmission structure for microscope and assembling method thereof - Google Patents
Back single-hand wheel focusing transmission structure for microscope and assembling method thereof Download PDFInfo
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- CN112051663B CN112051663B CN202011067791.1A CN202011067791A CN112051663B CN 112051663 B CN112051663 B CN 112051663B CN 202011067791 A CN202011067791 A CN 202011067791A CN 112051663 B CN112051663 B CN 112051663B
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- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/24—Base structure
- G02B21/241—Devices for focusing
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/24—Base structure
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/24—Base structure
- G02B21/26—Stages; Adjusting means therefor
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Abstract
A back single-hand wheel focusing transmission structure for a microscope belongs to the technical field of microscopes and comprises a base, a bent arm, a platform, a focusing knob, a platform bracket, a lifting seat plate, a platform bracket seat, a toothed bar, a helical rack and a toothed bar shaft sleeve; the platform bracket comprises a front part and a rear part, the front part is a platform seat arranged in the horizontal direction, and the rear part is an inserting groove and a rack clamping groove arranged in the vertical direction; the platform bracket seat is arranged at the rear side of the bent arm, the two sides of the platform bracket seat are provided with fixed connecting strips, a bracket penetrates into the empty crotch between the fixed connecting strips at the two sides, and the rear part of the platform bracket penetrates into the empty crotch from the front direction and backwards through the bracket to be inserted into the bracket perforation; the fixed connecting strip is connected with the lifting seat plate through a screw, and the bracket penetrates into the hollow crotch at the rear side of the bracket perforation; the upper end of the platform bracket seat is provided with a plug-in connection part, and the plug-in connection part is plug-in connected with the slot of the platform bracket seat; the rack bar is obliquely arranged from back to top and front to bottom, and the helical rack is arranged in the rack clamping groove; the beneficial effects of the invention are as follows: is suitable for various microscopes and is convenient to use.
Description
Technical Field
The invention relates to a focusing transmission structure for a microscope and an assembling method thereof, in particular to a focusing transmission structure for a back single-hand wheel for a microscope and an assembling method thereof, belonging to the technical field of microscopes.
Background
The structure of the focusing mechanism of the traditional microscope is as follows: the side focusing device comprises a toothed bar, two focusing knobs, two toothed bars arranged at two ends of the toothed bar at two sides of the curved wall respectively, a gear arranged in the middle of the toothed bar and meshed with the rack, and two focusing knobs at two sides of the toothed bar are rotated to drive the platform to focus up and down. However, such conventional focusing mechanisms of microscopes cannot be installed for use in some microscopes of special structures; in the use process, the two arms of an operator are contracted in front of the chest, the two arms are not unfolded, the time is long, the arms and the shoulders and elbows are easy to fatigue, even the local ache is caused, and the health is not facilitated.
Disclosure of Invention
The invention aims at overcoming the defects of inconvenient installation and use in the prior art, and provides a back single-hand wheel focusing transmission structure for a microscope, which can achieve the purposes of being suitable for various microscopes and convenient to use.
The technical scheme adopted by the invention for realizing the purpose is as follows: the utility model provides a microscope is with single hand wheel focusing transmission structure in back, includes base, bent arm, platform and focusing knob, the bent arm is fixed to be set up in the base upper rear, the platform sets up in the base top, the platform can follow the bent arm and go up and down, platform rear side and bent arm swing joint, control the platform through the focusing knob and go up and down;
the lifting seat plate, the platform bracket seat, the toothed bar, the helical rack and the toothed bar shaft sleeve are also included; the platform is fixedly arranged on a platform seat of the platform bracket;
The platform bracket comprises a front part and a rear part, wherein the front part is a platform seat arranged in the horizontal direction, and the rear part is an inserting groove and a rack clamping groove arranged in the vertical direction;
The middle part of the lifting seat board is a plane board, the upper part and the lower part are cambered surface boards bent in the forward direction, and a bracket with a rectangular hole is arranged in the middle of the plane board; the lifting seat plate is arranged at the rear side of the platform and the front side of the middle part of the bent arm, the plane plate part is arranged in the vertical direction, the front end part of the cambered surface plate at the lower part of the lifting seat plate is inserted into the rear end of the upper plane of the base, and the front end part of the cambered surface plate at the upper part of the lifting seat plate is inserted into the rear end of the upper part of the bent arm;
The platform bracket seat is arranged at the rear side of the bent arm, the two sides of the platform bracket seat are provided with fixed connecting strips, a bracket penetrates into the empty crotch between the fixed connecting strips at the two sides, the rear part of the platform bracket penetrates into the empty crotch from the front direction to the rear through the bracket, and the bracket is inserted into the bracket perforation, so that the rack clamping groove is arranged in the vertical direction; the fixed connecting strip is connected with the lifting seat plate through a screw, and the bracket penetrates into the hollow crotch and is arranged at the rear side of the bracket perforation; the upper end of the platform bracket seat is provided with a plug-in connection part, and the plug-in connection part is plug-in connected with the slot of the platform bracket seat;
The toothed bar comprises an upper circular notch part, a middle cylindrical part and a lower toothed part, wherein longitudinal toothed grooves are formed in the toothed part; the toothed bar is obliquely arranged from back to top and front to bottom, and the angle between the central line of the toothed bar and the horizontal direction is 10-18 degrees; the helical rack is arranged in the rack clamping groove and is in a vertical direction; the angle between the rack of the helical rack and the horizontal direction is 10-18 degrees, and the insection of the toothed bar is meshed with the rack of the helical rack;
The rack shaft sleeve main body is a cylindrical body and is provided with a central hole, a pair of side lugs are symmetrically arranged on two sides of the rack shaft sleeve main body, side lug holes are formed in the side lugs, the two side lug holes are fixedly connected with the upright post on one side of the bent wall through two tapping screws, and the rack teeth are ensured to be meshed with the rack teeth; the size of the center hole is matched with the size of the cylindrical part in the middle of the toothed bar, and the cylindrical part in the middle of the toothed bar is penetrated in the center hole of the cylindrical body and is in clearance fit with each other; the pair of side ears are fixedly arranged according to the upper and lower directions;
The middle part of the focusing knob is provided with a central column, a circular notch hole is arranged in the central column, the size of the circular notch hole is matched with that of the circular notch part at the upper part of the toothed bar, and the circular notch hole of the focusing knob is sleeved into the circular notch part at the upper part of the toothed bar and is in tight fit with the circular notch part;
the operation process comprises the following steps: the focusing knob is screwed in the positive and negative directions, so that the toothed bar rotates clockwise or anticlockwise, the toothed bar drives the helical rack to move upwards or downwards, the helical rack drives the rear part of the platform bracket to move upwards or downwards in the bracket perforation of the lifting seat plate, and the platform above the front part of the bracket is lifted upwards or downwards along with the bracket to focus.
The front end of the platform seat is provided with a section of arc notch, the front end of the platform seat is provided with a section of arc lower protruding head, and the arc lower protruding head is matched with the arc notch in shape and meshed with the arc notch in shape; the middle part both sides and the rear end of platform seat respectively are provided with 1 screw hole, and the platform passes through screw and screw hole fixed setting on the platform seat.
Two adjusting screws are arranged on the back surface of the rack clamping groove and are used for adjusting the meshing degree of the toothed bar insection and the rack insection.
The angle between the center line of the toothed bar and the horizontal direction is 14 degrees; the angle between the rack of the helical rack and the horizontal direction is 14 degrees.
The upper end and the lower end of the lifting seat plate are respectively provided with 1 inward groove, the inward grooves at the front end part of the cambered surface plate at the lower part of the lifting seat plate are spliced at the rear end of the upper plane of the base, and the inward grooves at the front end part of the cambered surface plate at the upper part of the lifting seat plate are spliced at the rear end of the upper part of the bent arm; a fixed connecting plate is longitudinally arranged on one side of the lifting seat plate, a screw hole is formed in the fixed connecting plate, and the fixed connecting plate is fixedly connected with one side of the bent arm through a screw and the screw hole.
The rear part of the bent arm is provided with a knob mounting hole, and the front lower end of a central column of the focusing knob and the rear upper end of the toothed bar shaft sleeve are tightly propped against each other in the knob mounting hole.
The fixed connecting strips on two sides of the platform bracket seat are respectively provided with 2 screw holes, and the fixed connecting strips are connected with the lifting seat plate through screws and the screw holes so that the platform bracket is fixedly connected with the lifting seat plate; the upper end of the platform bracket seat is provided with a plug connection part, the inner side surface of the plug connection part is provided with a plug convex head, and the plug convex head is in plug connection with a plug groove of the platform bracket.
The upper portion of helical tooth rack is provided with the constant head tank, the upper portion of rack draw-in groove is provided with the locating piece, locating piece size and constant head tank assorted, the locating piece inlay in the constant head tank, mutually be tight fit.
The surface of the focusing knob is provided with handprint, so that the focusing knob has a decorative effect and can be conveniently touched and rotated.
An assembling method of a back single-hand wheel focusing transmission structure for a microscope comprises the following assembling steps:
(1) The platform is fixedly arranged above the front part of the platform bracket by screws; the helical tooth rack is clamped into a rack clamping groove at the rear part of the platform bracket, the platform bracket passes through the lifting seat plate and then is connected with a platform bracket seat clamping groove, and the platform bracket seat and the lifting seat plate are fixed by four screws to form a component A;
(2) The lifting seat plate is arranged between the rear end of the base and the front lower part of the upper part of the bent arm;
The toothed bar is installed into the toothed bar shaft sleeve from front to back, the round notch of the focusing knob is sleeved into the round notch at the upper part of the toothed bar, so that the front end of the central column of the focusing knob is propped against the rear end part of the toothed bar shaft sleeve, and the round notch are tightly matched with each other to form a component B;
(3) The assembly B is arranged between the rear end of the base and the front lower part of the upper part of the bent arm, and a fixed connecting plate at one side of the lifting seat plate is fixedly connected with one side of the bent arm by using a screw;
(4) The toothed part of the toothed bar on the component B is meshed with the helical toothed rack, and then the two side lug holes are fixedly connected with the upright post on one side of the curved wall by two self-tapping screws;
(5) The focusing knob is screwed in the positive and negative directions to carry out debugging, when the focusing knob is screwed, all parts are matched and fastened, the focusing knob is screwed easily, the toothed bar and the helical rack are comfortable in transmission, the platform is flexible to lift upwards or downwards, and the meshing degree of the toothed bar and the helical rack is adjusted by two adjusting screws.
Compared with the prior art, the invention has the beneficial effects that: the novel adjusting mechanism realizes a back single-hand wheel adjusting mode by utilizing the meshing characteristic of the helical gear rack and the toothed bar, and has the advantages of unique structure, novel model and comfortable hand feeling adjustment. Various types of microscopes can be used. In the use process, the two arms of the operator can be stretched forward to accord with the physiological characteristics of the two arms of the human, the arm and the shoulder and elbow can not be tired after long-time operation, the phenomenon of ache and discomfort is avoided, and the health of the operator is facilitated.
Drawings
Fig. 1 is: the invention is a front view with partial section;
Fig. 2 is: the invention relates to a rear-view direction perspective view;
fig. 3 is: an enlarged view of a portion a of fig. 1;
fig. 4 is: an enlarged view of a portion B of fig. 2;
Fig. 5 is: a main view enlarged view of the platform bracket;
Fig. 6 is: a three-dimensional enlarged view of the platform bracket;
fig. 7 is: a main view enlarged diagram of the lifting seat plate;
Fig. 8 is: a left view enlarged diagram of the lifting seat plate;
fig. 9 is: a main view enlarged diagram of the platform bracket seat;
fig. 10 is: a visual magnified view of the platform bracket seat is attached;
fig. 11 is: a tooth bar main view enlargement;
Fig. 12 is: a top-view enlarged view of the toothed bar;
fig. 13 is: a main view enlarged diagram of the helical rack;
fig. 14 is: a left-view enlarged view of the helical rack;
fig. 15 is: a main view enlarged diagram of the toothed bar shaft sleeve;
Fig. 16 is: a three-dimensional enlarged view of the toothed bar shaft sleeve;
fig. 17 is: the helical rack, the toothed bar shaft sleeve and the focusing knob are combined into a cross-section enlarged view;
fig. 18 is: a focusing knob main view enlargement;
Fig. 19 is: a cross-sectional enlarged view of the focusing knob;
fig. 20 is: a focusing knob is seen from the rear to zoom in.
Reference numerals illustrate: base 1, curved arm 2, platform 3, arc lower protruding head 301, focusing knob 4, center column 401, circular hole 402, platform bracket 5, front 501, rear 502, insertion groove 503, rack clamping groove 504, platform seat 505, arc notch 506, lifting seat plate 6, bracket perforation 601, plane plate 602, arc panel 603, platform bracket seat 7, fixed connection bar 701, insertion connection 702, insertion protruding head 703, rack bar 8, circular hole 801, cylindrical portion 802, toothed portion 803, helical rack 9, positioning groove 901, rack bar sleeve 10, center hole 1001, side ear 1002, fixed connection plate 11, and adjusting screw 12.
Detailed Description
The invention will now be further described with reference to the drawings and specific examples, which are not intended to limit the invention.
As shown in fig. 1 to 20, the back single-hand wheel focusing transmission structure for the microscope comprises a base 1, a bent arm 2, a platform 3 and a focusing knob 4, wherein the bent arm 2 is fixedly arranged above the rear of the base 1, the platform 3 is arranged above the base 1, the platform 3 can lift up and down along the bent arm 2, the rear side of the platform 3 is movably connected with the bent arm 2, and the lifting of the platform 3 is controlled by the focusing knob 4;
As shown in fig. 1 and 2, the lifting seat plate also comprises a platform bracket 5, a lifting seat plate 6, a platform bracket seat 7, a toothed bar 8, a helical rack 9 and a toothed bar shaft sleeve 10; the platform 3 is fixedly arranged on a platform seat 505 of the platform bracket 5;
as shown in fig. 5 and 6, the platform bracket 5 includes a front portion 501 and a rear portion 502, the front portion 501 is a platform base 505 disposed in a horizontal direction, and the rear portion 502 is a plugging groove 503 and a rack clamping groove 504 disposed in a vertical direction;
As shown in fig. 3, 7 and 8, the middle part of the lifting seat board 6 is a plane board 602, the upper part and the lower part are arc surfaces 603 bent in the forward direction, and a bracket through hole 601 with a rectangular hole is arranged in the middle part of the plane board 602; the lifting seat plate 6 is arranged at the rear side of the platform 3 and the front side of the middle part of the bent arm 2, the plane plate 602 is arranged in a part vertical to the direction, the front end part of the arc panel 603 at the lower part of the lifting seat plate 6 is inserted into the rear end of the upper plane of the base 1, and the front end part of the arc panel 603 at the upper part of the lifting seat plate 6 is inserted into the rear end of the upper part of the bent arm 2;
As shown in fig. 4, 9 and 10, the platform bracket seat 7 is disposed at the rear side of the bent arm 2, two sides of the platform bracket seat 7 are provided with fixed connection strips 701, a bracket penetrates into the empty crotch between the fixed connection strips 701 at two sides, the rear portion 502 of the platform bracket 5 penetrates into the empty crotch from the front direction and backwards penetrates through the bracket, and is inserted into the bracket through hole 601, so that the rack clamping groove 504 is disposed in the vertical direction; the fixed connecting strip 701 is connected with the lifting seat board 6 through a screw, and the bracket penetrates into the hollow crotch to be arranged at the rear side of the bracket perforation 601; the upper end of the platform bracket seat 7 is provided with a plug connection part 702, and the plug connection part 702 is plug-connected with the socket of the platform bracket seat 7;
As shown in fig. 11 to 14 and 17, the toothed bar 8 includes an upper circular segment 801, a middle cylindrical segment 802, and a lower toothed segment 803, and the toothed segment 803 is provided with longitudinal grooves; the toothed bar 8 is obliquely arranged from the back to the top and forwards and downwards, and the angle alpha between the central line of the toothed bar 8 and the horizontal direction is 14 degrees; the helical gear rack 9 is arranged in the rack clamping groove 504 and is in a vertical direction; the angle beta between the rack of the helical rack 9 and the horizontal direction is 14 degrees, and is consistent with the angle alpha, and the insection of the toothed bar 8 is meshed with the rack of the helical rack 9;
As shown in fig. 4, 15, 16 and 17, the main body of the toothed bar sleeve 10 is a cylindrical body, and has a central hole 1001, a pair of side lugs 1002 are symmetrically arranged on two sides, side lug 1002 holes are arranged in the side lugs 1002, the two side lug 1002 holes are fixedly connected with the upright post on one side of the curved wall by two tapping screws, and the teeth of the toothed bar 8 are ensured to be correctly meshed with the toothed patterns of the toothed bar; the size of the central hole 1001 is matched with the size of the cylindrical part 802 in the middle of the toothed bar 8, and the cylindrical part 802 in the middle of the toothed bar 8 is penetrated in the central hole 1001 of the cylindrical body and is in clearance fit with each other; a pair of side ears 1002 are fixedly arranged in an upper and lower direction;
As shown in fig. 18 to 20 and fig. 3, a central column 401 is disposed in the middle of the focusing knob 4, a circular hole 402 is disposed in the central column 401, the size of the circular hole 402 is matched with that of the circular hole 801 on the upper portion of the toothed bar 8, and the circular hole 402 of the focusing knob 4 is sleeved in the circular hole 801 on the upper portion of the toothed bar 8 and is in tight fit with each other;
as shown in fig. 1 and 2, the operation process is as follows: the focusing knob 4 is screwed in the forward and backward directions, so that the toothed bar 8 rotates clockwise or anticlockwise, the toothed bar 8 drives the helical rack 9 to move upwards or downwards, the helical rack 9 drives the rear part 502 of the platform bracket 5 to move upwards or downwards in the bracket through hole 601 of the lifting seat plate 6, and the platform 3 above the front part 501 of the bracket is lifted upwards or downwards along with the bracket to focus.
As shown in fig. 1, 5 and 6, the front end of the platform base 505 is provided with an arc notch 506, the front end of the platform 3 is provided with an arc lower protruding head 301, and the arc lower protruding head 301 is matched with the arc notch 506 in shape and is engaged with the arc notch 506; the center both sides and the rear end of the platform base 505 are respectively provided with 1 screw hole, and the platform 3 is fixedly provided on the platform base 505 by screws and screw holes.
As shown in fig. 4, two adjusting screws 12 are installed on the opposite sides of the rack clamping groove 504 to adjust the meshing degree of the rack 8 and the rack teeth.
As shown in fig. 3, 7 and 8, the upper and lower ends of the lifting seat plate 6 are respectively provided with 1 inward groove, the inward groove at the front end of the arc panel 603 at the lower part of the lifting seat plate 6 is inserted into the rear end of the upper plane of the base 1, and the inward groove at the front end of the arc panel 603 at the upper part of the lifting seat plate 6 is inserted into the rear end of the upper part (not shown) of the bent arm 2; a fixed connection plate 11 is longitudinally arranged on one side of the lifting seat plate 6, a screw hole is formed in the fixed connection plate 11, and the fixed connection plate 11 is fixedly connected with one side of the bent arm 2 through a screw and the screw hole.
As shown in fig. 3, the rear portion 502 of the bent arm 2 is provided with a knob mounting hole in which the front lower end of the center post 401 of the focus knob 4 and the rear upper end of the rack bar sleeve 10 are abutted against each other.
As shown in fig. 4, 6, 9 and 10, the fixed connection bars 701 on two sides of the platform bracket seat 7 are respectively provided with 2 screw holes, and the fixed connection bars 701 are connected with the lifting seat plate 6 through screws and screw holes, so that the platform bracket 5 is fixedly connected with the lifting seat plate 6; the upper end of the platform bracket seat 7 is provided with a plug connection part 702, the inner side surface of the plug connection part 702 is provided with a plug convex head 703, and the plug convex head 703 is in plug connection with the plug groove 503 of the platform bracket 5.
As shown in fig. 6 and 14, a positioning groove 901 is formed in the upper portion of the helical rack 9, a positioning block is arranged in the upper portion of the rack clamping groove 504, the size of the positioning block is matched with that of the positioning groove 901, and the positioning blocks are embedded in the positioning groove 901 and are in tight fit with each other.
As shown in fig. 20, the surface of the focusing knob 4 is provided with hand patterns, which has a decorative effect and is convenient for touch rotation.
As shown in fig. 1 to 4, an assembling method of a back single-hand wheel focusing transmission structure for a microscope comprises the following assembling steps:
(1) The platform is fixedly arranged above the front part of the platform bracket by screws; the helical tooth rack is clamped into a rack clamping groove at the rear part of the platform bracket, the platform bracket passes through the lifting seat plate and then is connected with a platform bracket seat clamping groove, and the platform bracket seat and the lifting seat plate are fixed by four screws to form a component A;
(2) The lifting seat plate is arranged between the rear end of the base and the front lower part of the upper part of the bent arm;
The toothed bar is installed into the toothed bar shaft sleeve from front to back, the round notch of the focusing knob is sleeved into the round notch at the upper part of the toothed bar, so that the front end of the central column of the focusing knob is propped against the rear end part of the toothed bar shaft sleeve, and the round notch are tightly matched with each other to form a component B;
(3) The assembly B is arranged between the rear end of the base and the front lower part of the upper part of the bent arm, and a fixed connecting plate at one side of the lifting seat plate is fixedly connected with one side of the bent arm by using a screw;
(4) The toothed part of the toothed bar on the component B is meshed with the helical toothed rack, and then the two side lug holes are fixedly connected with the upright post on one side of the curved wall by two self-tapping screws;
(5) The focusing knob is screwed in the positive and negative directions to carry out debugging, when the focusing knob is screwed, all parts are matched and fastened, the focusing knob is screwed easily, the toothed bar and the helical rack are comfortable in transmission, the platform is flexible to lift upwards or downwards, and the meshing degree of the toothed bar and the helical rack is adjusted by two adjusting screws.
The above examples are only preferred embodiments of the present invention, and common variations and substitutions by those skilled in the art within the scope of the technical solution of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a microscope is with back single hand wheel focusing transmission structure, includes base, bent arm, platform and focusing knob, the fixed top in the base rear of setting of bent arm, the platform sets up in the base top, the platform can follow the bent arm and go up and down, platform rear side and bent arm swing joint, comes control platform lift, its characterized in that through the focusing knob:
the lifting seat plate, the platform bracket seat, the toothed bar, the helical rack and the toothed bar shaft sleeve are also included; the platform is fixedly arranged on a platform seat of the platform bracket;
The platform bracket comprises a front part and a rear part, wherein the front part is a platform seat arranged in the horizontal direction, and the rear part is an inserting groove and a rack clamping groove arranged in the vertical direction;
The middle part of the lifting seat board is a plane board, the upper part and the lower part are cambered surface boards bent in the forward direction, and a bracket with a rectangular hole is arranged in the middle of the plane board; the lifting seat plate is arranged at the rear side of the platform and the front side of the middle part of the bent arm, the plane plate part is arranged in the vertical direction, the front end part of the cambered surface plate at the lower part of the lifting seat plate is inserted into the rear end of the upper plane of the base, and the front end part of the cambered surface plate at the upper part of the lifting seat plate is inserted into the rear end of the upper part of the bent arm;
The platform bracket seat is arranged at the rear side of the bent arm, the two sides of the platform bracket seat are provided with fixed connecting strips, a bracket penetrates into the empty crotch between the fixed connecting strips at the two sides, the rear part of the platform bracket penetrates into the empty crotch from the front direction to the rear through the bracket, and the bracket is inserted into the bracket perforation, so that the rack clamping groove is arranged in the vertical direction; the fixed connecting strip is connected with the lifting seat plate through a screw, and the bracket penetrates into the hollow crotch and is arranged at the rear side of the bracket perforation; the upper end of the platform bracket seat is provided with a plug-in connection part, and the plug-in connection part is plug-in connected with the slot of the platform bracket seat;
The toothed bar comprises an upper circular notch part, a middle cylindrical part and a lower toothed part, wherein longitudinal toothed grooves are formed in the toothed part; the toothed bar is obliquely arranged from back to top and front to bottom, and the angle between the central line of the toothed bar and the horizontal direction is 10-18 degrees; the helical rack is arranged in the rack clamping groove and is in a vertical direction; the angle between the rack of the helical rack and the horizontal direction is 10-18 degrees, and the insection of the toothed bar is meshed with the rack of the helical rack;
The rack shaft sleeve main body is a cylindrical body and is provided with a central hole, a pair of side lugs are symmetrically arranged on two sides of the rack shaft sleeve main body, side lug holes are formed in the side lugs, the two side lug holes are fixedly connected with the upright post on one side of the bent wall through two tapping screws, and the rack teeth are ensured to be meshed with the rack teeth; the size of the center hole is matched with the size of the cylindrical part in the middle of the toothed bar, and the cylindrical part in the middle of the toothed bar is penetrated in the center hole of the cylindrical body and is in clearance fit with each other; the pair of side ears are fixedly arranged according to the upper and lower directions;
The middle part of the focusing knob is provided with a center column, a circular notch hole is arranged in the center column, the size of the circular notch hole is matched with that of the circular notch part on the upper part of the toothed bar, and the circular notch hole of the focusing knob is sleeved into the circular notch part on the upper part of the toothed bar and is in tight fit with the circular notch part on the upper part of the toothed bar.
2. The back one-hand wheel focusing transmission structure for a microscope according to claim 1, wherein: the front end of the platform seat is provided with a section of arc notch, the front end of the platform seat is provided with a section of arc lower protruding head, and the arc lower protruding head is matched with the arc notch in shape and meshed with the arc notch in shape; the middle part both sides and the rear end of platform seat respectively are provided with 1 screw hole, and the platform passes through screw and screw hole fixed setting on the platform seat.
3. The back one-hand wheel focusing transmission structure for a microscope according to claim 1, wherein: two adjusting screws are arranged on the back surface of the rack clamping groove and are used for adjusting the meshing degree of the toothed bar insection and the rack insection.
4. The back one-hand wheel focusing transmission structure for a microscope according to claim 1, wherein: the angle between the center line of the toothed bar and the horizontal direction is 14 degrees; the angle between the rack of the helical rack and the horizontal direction is 14 degrees.
5. The back one-hand wheel focusing transmission structure for a microscope according to claim 1, wherein: the upper end and the lower end of the lifting seat plate are respectively provided with 1 inward groove, the inward grooves at the front end part of the cambered surface plate at the lower part of the lifting seat plate are spliced at the rear end of the upper plane of the base, and the inward grooves at the front end part of the cambered surface plate at the upper part of the lifting seat plate are spliced at the rear end of the upper part of the bent arm; a fixed connecting plate is longitudinally arranged on one side of the lifting seat plate, a screw hole is formed in the fixed connecting plate, and the fixed connecting plate is fixedly connected with one side of the bent arm through a screw and the screw hole.
6. The back one-hand wheel focusing transmission structure for a microscope according to claim 1, wherein: the rear part of the bent arm is provided with a knob mounting hole, and the front lower end of a central column of the focusing knob and the rear upper end of the toothed bar shaft sleeve are tightly propped against each other in the knob mounting hole.
7. The back one-hand wheel focusing transmission structure for a microscope according to claim 1, wherein: the fixed connecting strips on two sides of the platform bracket seat are respectively provided with 2 screw holes, and the fixed connecting strips are connected with the lifting seat plate through screws and the screw holes so that the platform bracket is fixedly connected with the lifting seat plate; the inner side surface of the plug connection part is provided with a plug convex head, and the plug convex head is in plug connection with a plug groove of the platform bracket.
8. The back one-hand wheel focusing transmission structure for a microscope according to claim 1, wherein: the upper portion of helical tooth rack is provided with the constant head tank, the upper portion of rack draw-in groove is provided with the locating piece, locating piece size and constant head tank assorted, the locating piece inlay in the constant head tank, mutually be tight fit.
9. The back one-hand wheel focusing transmission structure for a microscope according to claim 1, wherein: the surface of the focusing knob is provided with handprint.
10. The method for assembling the back one-hand wheel focusing transmission structure for the microscope according to claim 1, wherein the method comprises the following steps: the assembling steps of the back single-hand wheel focusing transmission structure for the microscope are as follows:
(1) The platform is fixedly arranged above the front part of the platform bracket by screws; the helical tooth rack is clamped into a rack clamping groove at the rear part of the platform bracket, the platform bracket passes through the lifting seat plate and then is connected with a platform bracket seat clamping groove, and the platform bracket seat and the lifting seat plate are fixed by four screws to form a component A;
(2) The lifting seat plate is arranged between the rear end of the base and the front lower part of the upper part of the bent arm;
The toothed bar is installed into the toothed bar shaft sleeve from front to back, the round notch of the focusing knob is sleeved into the round notch at the upper part of the toothed bar, so that the front end of the central column of the focusing knob is propped against the rear end part of the toothed bar shaft sleeve, and the round notch are tightly matched with each other to form a component B;
(3) The assembly B is arranged between the rear end of the base and the front lower part of the upper part of the bent arm, and a fixed connecting plate at one side of the lifting seat plate is fixedly connected with one side of the bent arm by using a screw;
(4) The toothed part of the toothed bar on the component B is meshed with the helical toothed rack, and then the two side lug holes are fixedly connected with the upright post on one side of the curved wall by two self-tapping screws;
(5) The focusing knob is screwed in the positive and negative directions to carry out debugging, when the focusing knob is screwed, all parts are matched and fastened, the focusing knob is screwed easily, the toothed bar and the helical rack are comfortable in transmission, the platform is flexible to lift upwards or downwards, and the meshing degree of the toothed bar and the helical rack is adjusted by two adjusting screws.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011067791.1A CN112051663B (en) | 2020-10-07 | 2020-10-07 | Back single-hand wheel focusing transmission structure for microscope and assembling method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011067791.1A CN112051663B (en) | 2020-10-07 | 2020-10-07 | Back single-hand wheel focusing transmission structure for microscope and assembling method thereof |
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| CN112051663B true CN112051663B (en) | 2024-05-14 |
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Citations (4)
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|---|---|---|---|---|
| DE102007012710A1 (en) * | 2007-03-16 | 2008-09-18 | Carl Zeiss Microimaging Gmbh | Stereo microscope's movement speed controlling method, involves deriving fine focusing speed from rough focusing speed as partial area of one speed curve is spread apart to whole adjusting area of focus operating unit |
| CN206282027U (en) * | 2016-12-20 | 2017-06-27 | 宁波星像光电科技有限公司 | A kind of steady focusing structure of microscope |
| CN207440384U (en) * | 2017-11-16 | 2018-06-01 | 宁波湛京光学仪器有限公司 | Microscope flank of tooth transmission belt lifts focus control |
| CN212781483U (en) * | 2020-10-07 | 2021-03-23 | 宁波湛京光学仪器有限公司 | Back single hand wheel focusing transmission structure for microscope |
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2020
- 2020-10-07 CN CN202011067791.1A patent/CN112051663B/en active Active
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|---|---|---|---|---|
| DE102007012710A1 (en) * | 2007-03-16 | 2008-09-18 | Carl Zeiss Microimaging Gmbh | Stereo microscope's movement speed controlling method, involves deriving fine focusing speed from rough focusing speed as partial area of one speed curve is spread apart to whole adjusting area of focus operating unit |
| CN206282027U (en) * | 2016-12-20 | 2017-06-27 | 宁波星像光电科技有限公司 | A kind of steady focusing structure of microscope |
| CN207440384U (en) * | 2017-11-16 | 2018-06-01 | 宁波湛京光学仪器有限公司 | Microscope flank of tooth transmission belt lifts focus control |
| CN212781483U (en) * | 2020-10-07 | 2021-03-23 | 宁波湛京光学仪器有限公司 | Back single hand wheel focusing transmission structure for microscope |
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