CN219021147U - Handle device of optometry instrument - Google Patents
Handle device of optometry instrument Download PDFInfo
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- CN219021147U CN219021147U CN202222311786.1U CN202222311786U CN219021147U CN 219021147 U CN219021147 U CN 219021147U CN 202222311786 U CN202222311786 U CN 202222311786U CN 219021147 U CN219021147 U CN 219021147U
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- driving wheel
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Abstract
The utility model provides a handle device of an optometry instrument, which comprises a base, a handle shaft assembly, a driving wheel and a cover plate, wherein a person rotates the handle shaft assembly and can drive the driving wheel and the cover plate to synchronously rotate along the plumb line direction along with the handle shaft assembly, the cover plate comprises a connecting part and a yielding part, and the connecting part and the yielding part are annular; the connecting part is arranged on the end surface of the driving wheel far away from the base, one end of the handle shaft assembly is penetrated in the connecting part, and the diameter of the outer ring of the connecting part is not larger than the outer diameter of the driving wheel; the inner ring edge of the abdication part is connected with the outer ring edge of the connecting part, the ring surface of the abdication part extends obliquely along the direction away from the driving wheel and away from the stem component, and the outer ring diameter of the abdication part is larger than the outer diameter of the driving wheel; the edge of the cover plate is tilted upwards to form the abdication part, so that an interval is reserved between the cover plate and the belt, and the abdication part can still cover the outer edge of the whole driving wheel and the driving belt, so that the problem of damage caused by friction between the side edge of the belt and the cover plate is avoided.
Description
Technical Field
The utility model relates to the technical field of handles of optometry apparatuses, in particular to a handle device of an optometry apparatus.
Background
The optometry device generally needs to operate a handle mechanism to adjust the relative spatial position between the optical measurement unit and the eye to be inspected, so as to realize alignment and centering measurement on the eye to be inspected.
In the conventional optometry apparatus, a driving wheel is usually provided at the bottom of the handle device, and is connected with a driving wheel belt on a screw rod provided on the optical measurement unit in a driving manner, and mechanically moves the optical measurement unit up and down by the belt driving. The patent document CN113876294A discloses an operating handle for a computer optometry instrument, which has a reasonable structure and is convenient and effective to operate.
However, in the actual use process of the device, the technician finds that, in order to cover the driving wheel and the driving belt in the device, and avoid that dust or pollutants in the external environment squeeze into the device to possibly obstruct the rotation efficacy of the driving wheel, a cover plate is generally arranged on the handle device to cover the driving wheel and the driving belt; however, since the driving wheel is driven by the belt, in order to avoid the belt sliding on the driving wheel, the width of the belt is generally the same as the thickness of the driving wheel or slightly wider, but the belt can continuously rub the side surface of the belt with the cover plate when the belt moves along with the rotation of the driving wheel, and damage or even fracture of the belt can be caused in the long term.
Disclosure of Invention
In view of the above, the utility model provides a handle device of an optometry instrument, which solves the problem that the side surface of a cover plate and the side surface of a transmission belt are rubbed in the rotation process of a driving wheel of the conventional handle device, so that the transmission belt is worn or even broken.
The technical scheme of the utility model is realized as follows: the utility model provides a handle device of an optometry instrument, which comprises a base, a handle shaft assembly, a driving wheel and a cover plate, wherein the base is horizontally arranged, the handle shaft assembly is arranged on the base and can axially rotate, the driving wheel is sleeved on the handle shaft assembly, the cover plate is arranged on the end surface of the driving wheel far away from the base, the handle shaft assembly can be rotated by a person to drive the driving wheel and the cover plate to synchronously rotate along with the handle shaft assembly along the plumb line direction, the cover plate comprises a connecting part and a abdicating part, and the connecting part and the abdicating part are annular; the connecting part is arranged on the end surface of the driving wheel far away from the base, one end of the handle shaft assembly is penetrated in the connecting part, and the diameter of the outer ring of the connecting part is not larger than the outer diameter of the driving wheel; the inner ring edge of the abdication part is connected with the outer ring edge of the connecting part, the ring surface of the abdication part extends obliquely along the direction away from the driving wheel and away from the stem component, and the outer ring diameter of the abdication part is larger than the outer diameter of the driving wheel.
On the basis of the technical scheme, preferably, the cover plate further comprises an annular extension part, the inner annular edge of the extension part is connected with the outer annular edge of the abdication part, and the annular surface of the extension part extends horizontally.
Still further preferably, the outer ring diameter of the connection is smaller than the outer diameter of the drive wheel.
On the basis of the technical scheme, preferably, the handle shaft assembly comprises a sphere, a rotating shaft, a sleeve and a linkage part; the sphere is arranged in the base and can rotate around the sphere center in the base; one end of the rotating shaft, which faces the base, is fixedly arranged in the sphere along the radial direction of the sphere, the rotating shaft can synchronously rotate along with the sphere, or one end of the rotating shaft, which is far away from the base, can circumferentially rotate around the sphere center of the sphere, and a driving wheel is sleeved on the rotating shaft; the sleeve is sleeved on the rotating shaft, the sleeve can axially rotate relative to the rotating shaft along the extending direction of the rotating shaft, and a driving wheel is arranged between the sleeve and the base; the linkage part is arranged between the sleeve and the driving wheel and is used for enabling the sleeve and the driving wheel to synchronously rotate along the plumb line direction.
Still more preferably, the linkage part comprises a cylinder body, a cover body and a limiting piece; the cylinder body is sleeved on the rotating shaft and positioned between the sleeve and the driving wheel, and the driving wheel is sleeved on the cylinder body and can drive the driving wheel to synchronously rotate along the plumb line direction; the cover body is hemispherical, the cover body is arranged at one end of the sleeve towards the base and covers one end of the barrel away from the base, a gap is reserved between the inner wall of the cover body and the outer wall of the barrel, at least one sliding groove is formed in the outer wall of the cover body, two ends of the sliding groove extend towards the edge of the cover body and towards the connecting part of the cover body and the sleeve respectively, and the cover body can synchronously rotate along with the sleeve; one end of the limiting piece is fixedly arranged on the cylinder body, and the other end of the limiting piece is inserted into the sliding groove and can move along the sliding groove.
Still more preferably, both ends of the chute extend along the edges of the maximum radius section of the housing.
Still more preferably, a bearing is filled between the inner wall of the cylinder and the outer wall of the base.
Still more preferably, the inner diameter of the cylinder is not smaller than the sphere diameter of the sphere.
On the basis of the above technical scheme, preferably, the connecting part can be detachably arranged on the side surface of the driving wheel, which is far away from the base, through a fastening bolt.
Compared with the prior art, the handle device of the optometry instrument has the following beneficial effects:
according to the utility model, the edge of the cover plate is tilted upwards to form the abdication part, so that a space is reserved between the cover plate and the belt, and meanwhile, the abdication part can still cover the outer edge of the whole driving wheel and the driving belt, so that the problem of damage caused by friction between the side edge of the belt and the cover plate is avoided.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a perspective view of a handle assembly of the present utility model;
FIG. 2 is a front view of the handle assembly of the present utility model;
FIG. 3 is a front cross-sectional view of the handle assembly of the present utility model;
fig. 4 is a partial front cross-sectional view of a cover plate of the present utility model.
In the figure: 1. a base; 2. a stem assembly; 21. a sphere; 22. a rotating shaft; 23. a sleeve; 24. a linkage part; 241. a cylinder; 242. a cover body; 243. a limiting piece; 201. a chute; 3. a driving wheel; 4. a cover plate; 41. a connection part; 42. a yielding part; 43. an extension.
Detailed Description
The following description of the embodiments of the present utility model will clearly and fully describe the technical aspects of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.
Embodiment one:
as shown in fig. 1, in combination with fig. 2, 3 and 4, a handle device of an optometry apparatus includes a base 1, a stem assembly 2, a driving wheel 3 and a cover plate 4.
Wherein the base 1 is horizontally arranged. The base 1 is actually a part of the whole equipment main body of the optometry instrument, the equipment main body comprises a hollow shell, the base 1 is arranged in the shell, a window is formed in the top of the base 1, a part of the arbor assembly 2 and the driving wheel 3 are arranged in the shell, the cover plate 4 covers the window and shields the driving wheel 3 and the base 1, and the cover plate 4 can be lapped on the edge step of the window, so that external dust is prevented from entering the shell from the window.
The stem assembly 2 is provided on the base 1 and is axially rotatable.
Specifically, stem assembly 2 includes a ball 21, a shaft 22, a sleeve 23, and a linkage 24.
Wherein the sphere 21 is arranged in the base 1 and can rotate around the sphere center in the base 1.
One end of the rotating shaft 22, which faces the base 1, is fixedly arranged in the sphere 21 along the radial direction of the sphere 21, the rotating shaft 22 can synchronously rotate along with the sphere 21, or one end of the rotating shaft 22, which is far away from the base 1, can circumferentially rotate around the sphere center of the sphere 21, and the driving wheel 3 is sleeved on the rotating shaft 22. It should be noted that, the rotating shaft 22 is not simply a shaft rod, the main body of the rotating shaft 22 is a hollow tube, the electric wire is inserted into the tube, the detachable handle is arranged at the top of the rotating shaft 22, the button is arranged at the top of the handle, the button is connected with the electric wire and is communicated with the control system, and the optical measuring unit can be controlled to perform detection operation through the button.
The sleeve 23 is sleeved on the rotating shaft 22, the sleeve 23 can axially rotate relative to the rotating shaft 22 along the extending direction of the rotating shaft 22, and the driving wheel 3 is arranged between the sleeve 23 and the base 1.
A linkage 24 is provided between the sleeve 23 and the driving wheel 3, the linkage 24 being configured to enable the sleeve 23 and the driving wheel 3 to be rotated synchronously in the plumb line direction.
The driving wheel 3 is sleeved on the handle shaft assembly 2, and the driving wheel 3 is connected with the other driving wheel in the mechanical mechanism for controlling the lifting of the photoelectric detection unit through a belt. The driving wheel 3 can be a gear, so that the friction force between the driving wheel 3 and a belt can be enhanced, and the driving wheel 3 is prevented from slipping.
The cover plate 4 is arranged on the end surface of the driving wheel 3 far away from the base 1, and the manual handle rotates the handle shaft assembly 2 to drive the driving wheel 3 and the cover plate 4 to synchronously rotate along the plumb line direction along with the handle shaft assembly 2.
Since the cover plate 4 rubs the top edge of the belt when the driving wheel 3 rotates, in order to avoid this, the cover plate 4 includes a connecting portion 41 and a yielding portion 42, and the connecting portion 41 and the yielding portion 42 are both annular.
The connecting part 41 is arranged on the end face of the driving wheel 3 far away from the base 1, one end of the stem component 2 is penetrated in the connecting part 41, and the outer ring diameter of the connecting part 41 is not larger than the outer diameter of the driving wheel 3.
The inner ring edge of the yielding part 42 is connected with the outer ring edge of the connecting part 41, the ring surface of the yielding part 42 extends obliquely along the direction away from the driving wheel 3 and away from the stem assembly 2, and the outer ring diameter of the yielding part 42 is larger than the outer diameter of the driving wheel 3, so that the annular edge of the cover plate 4 forms an upward-inclined warping, a gap is reserved between the annular edge of the cover plate 4 and the belt, and the problem that when the driving wheel 3 rotates, the side surface of the belt rubs with the bottom end surface of the cover plate 4 is avoided.
Embodiment two:
another embodiment is also possible for the cover plate 4 in the first embodiment, specifically, the cover plate 4 further includes an annular extension 43.
The inner ring edge of the outer extension portion 43 is connected with the outer ring edge of the abdication portion 42, and the ring surface of the outer extension portion 43 extends horizontally, so that the outer extension portion 43 can be lapped on the window edge of the device body, which is opened for installing the handle device.
Meanwhile, the outer ring diameter of the connecting portion 41 is smaller than the outer diameter of the driving wheel 3 to form a space for the belt.
Embodiment III:
on the basis of the first embodiment, in order to realize that the rotation of the manual operation stem assembly 2 can drive the driving wheel 3 to rotate axially and control the optical measurement unit to lift, and meanwhile, the stem assembly 2 can also be operated to swing or rotate circumferentially to control the optical measurement unit to translate back and forth or translate left and right, the linkage part 24 comprises a cylinder 241, a cover 242 and a limiting piece 243.
The cylinder 241 is sleeved on the rotating shaft 22 and is positioned between the sleeve 23 and the driving wheel 3, and the driving wheel 3 is sleeved on the cylinder 241 and can drive the driving wheel 3 to synchronously rotate along the plumb line direction. The inner diameter of the cylinder 241 is not smaller than the sphere diameter of the sphere 21, so that the maximum swing angle can be given to the rotation shaft 22 and the sleeve 23.
The cover body 242 is hemispherical, the cover body 242 is arranged at one end of the sleeve 23 facing the base 1 and covers one end of the cylinder body 241 far away from the base 1, a gap is reserved between the inner wall of the cover body 242 and the outer wall of the cylinder body 241, at least one sliding groove 201 is formed in the outer wall of the cover body 242, two ends of the sliding groove 201 extend towards the edge of the cover body 242 along the edge of the largest radius section of the cover body 242 and extend towards the connecting part of the cover body 242 and the sleeve 23, and the cover body 242 can rotate synchronously with the sleeve 23.
One end of the limiting member 243 is fixedly arranged on the cylinder 241, and the other end of the limiting member 243 is inserted into the chute 201 and can move along the chute 201.
Through the cooperation of barrel 241 and cover 242, when sleeve 23 along plumb line direction pivot, the locating part 243 makes barrel 241 and cover 242 and drive wheel 3 can synchronous axial rotation, and when sleeve 23 drove the distal end of pivot 22 and swing around spheroid 21 centre of sphere, the locating part 243 can slide in spout 201, makes barrel 241 can not hinder the swing or the rotation of cover 242 and sleeve 23.
Embodiment four:
as an alternative embodiment, a bearing is filled between the inner wall of the cylinder 241 and the outer wall of the base 1, so that the relative rotation of the cylinder 241 and the base 1 is smoother.
Fifth embodiment:
as an alternative embodiment, the connection 41 can be arranged detachably on the side of the drive wheel 3 remote from the base 1 by means of a fastening bolt.
Example six:
in the absence of technical conflicts, there are also any combination of embodiments one to five.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (9)
1. The utility model provides a handle device of optometry instrument, including base (1), handle axle subassembly (2), drive wheel (3) and apron (4), base (1) level sets up, handle axle subassembly (2) set up on base (1) and can axial rotation, drive wheel (3) cover is established on handle axle subassembly (2), apron (4) set up on the terminal surface of base (1) is kept away from in drive wheel (3), people's hand rotates handle axle subassembly (2) can drive wheel (3) and apron (4) along with synchronous axle of handle axle subassembly (2) along plumb line direction, its characterized in that: the cover plate (4) comprises a connecting part (41) and a yielding part (42), and the connecting part (41) and the yielding part (42) are both annular;
the connecting part (41) is arranged on the end face of the driving wheel (3) far away from the base (1), one end of the handle shaft assembly (2) is arranged in the connecting part (41) in a penetrating mode, and the outer ring diameter of the connecting part (41) is not larger than the outer diameter of the driving wheel (3);
the inner ring edge of the yielding part (42) is connected with the outer ring edge of the connecting part (41), the ring surface of the yielding part (42) obliquely extends along the direction away from the driving wheel (3) and away from the stem assembly (2), and the outer ring diameter of the yielding part (42) is larger than the outer diameter of the driving wheel (3).
2. A handle assembly for an optometer according to claim 1, wherein: the cover plate (4) further comprises an annular outer extension portion (43), the inner annular edge of the outer extension portion (43) is connected with the outer annular edge of the abdication portion (42), and the annular surface of the outer extension portion (43) horizontally extends.
3. A handle assembly for an optometer according to claim 2, wherein: the outer ring diameter of the connecting part (41) is smaller than the outer diameter of the driving wheel (3).
4. A handle assembly for an optometer according to claim 1, wherein: the handle shaft assembly (2) comprises a sphere (21), a rotating shaft (22), a sleeve (23) and a linkage part (24);
the ball body (21) is arranged in the base (1) and can rotate around the ball center in the base (1);
one end of the rotating shaft (22) facing the base (1) is fixedly arranged in the sphere (21) in a penetrating manner along the radial direction of the sphere (21), the rotating shaft (22) can synchronously rotate along with the sphere (21), or one end of the rotating shaft (22) far away from the base (1) can circumferentially rotate around the sphere center of the sphere (21), and the driving wheel (3) is sleeved on the rotating shaft (22);
the sleeve (23) is sleeved on the rotating shaft (22), the sleeve (23) can axially rotate relative to the rotating shaft (22) along the extending direction of the rotating shaft (22), and a driving wheel (3) is arranged between the sleeve (23) and the base (1);
the linkage part (24) is arranged between the sleeve (23) and the driving wheel (3), and the linkage part (24) is used for enabling the sleeve (23) and the driving wheel (3) to synchronously rotate along the plumb line direction.
5. A handle assembly for an optometer according to claim 4, wherein: the linkage part (24) comprises a cylinder body (241), a cover body (242) and a limiting piece (243);
the cylinder body (241) is sleeved on the rotating shaft (22) and is positioned between the sleeve (23) and the driving wheel (3), and the driving wheel (3) is sleeved on the cylinder body (241) and can drive the driving wheel (3) to synchronously rotate along the plumb line direction;
the cover body (242) is hemispherical, the cover body (242) is arranged at one end of the sleeve (23) facing the base (1) and covers one end of the cylinder body (241) far away from the base (1), a gap is reserved between the inner wall of the cover body (242) and the outer wall of the cylinder body (241), at least one sliding groove (201) is formed in the outer wall of the cover body (242), two ends of the sliding groove (201) extend towards the edge of the cover body (242) and towards the connecting part of the cover body (242) and the sleeve (23) respectively, and the cover body (242) can rotate synchronously with the sleeve (23);
one end of the limiting piece (243) is fixedly arranged on the cylinder body (241), and the other end of the limiting piece (243) is inserted into the sliding groove (201) and can move along the sliding groove (201).
6. A handle assembly for an optometer according to claim 5, wherein: both ends of the sliding groove (201) extend along the edge of the maximum radius section of the cover body (242).
7. A handle assembly for an optometer according to claim 5, wherein: and a bearing is filled between the inner wall of the cylinder body (241) and the outer wall of the base (1).
8. A handle assembly for an optometer according to claim 5, wherein: the inner diameter of the cylinder body (241) is not smaller than the sphere diameter of the sphere (21).
9. A handle assembly for an optometer according to claim 1, wherein: the connecting part (41) can be detachably arranged on the side surface of the driving wheel (3) far away from the base (1) through a fastening bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222311786.1U CN219021147U (en) | 2022-08-31 | 2022-08-31 | Handle device of optometry instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222311786.1U CN219021147U (en) | 2022-08-31 | 2022-08-31 | Handle device of optometry instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219021147U true CN219021147U (en) | 2023-05-16 |
Family
ID=86315884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222311786.1U Active CN219021147U (en) | 2022-08-31 | 2022-08-31 | Handle device of optometry instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219021147U (en) |
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2022
- 2022-08-31 CN CN202222311786.1U patent/CN219021147U/en active Active
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