CN219071854U

CN219071854U - Adjustable fixing device for light feeding instrument and light feeding instrument

Info

Publication number: CN219071854U
Application number: CN202222890776.8U
Authority: CN
Inventors: 张如杰; 任文斌
Original assignee: Beijing Yingtong Mingmu Information Technology Co ltd; Beijing Airdoc Technology Co Ltd
Current assignee: Beijing Yingtong Mingmu Information Technology Co ltd; Beijing Airdoc Technology Co Ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-05-26
Anticipated expiration: 2032-10-31

Abstract

The disclosure discloses an adjustable fixing device for a light feeding instrument and the light feeding instrument. The adjustable fixing device comprises: a fixing part which is arranged in the shell of the light feeding instrument and is provided with an accommodating space; the movable part is rotatably arranged in the accommodating space of the fixed part and is used for installing a red light generator of the light instrument; the movable part is configured to be adjusted and rotated in the accommodating space so as to drive the red light generator to rotate and stop to a preset position, and the red light emitted by the red light generator is parallel or coincident with the central axis of the eyepiece of the light feeding instrument. The adjustable fixing device can adjust the emergent angle of the red light emitted by the light-feeding instrument relative to the ocular according to actual conditions, so that the red light can be ensured to always vertically irradiate the ocular, and finally the aim of effective irradiation treatment of the light-feeding instrument is realized.

Description

Adjustable fixing device for light feeding instrument and light feeding instrument

Technical Field

The present disclosure relates generally to the field of nursing instrument equipment. More particularly, the present disclosure relates to an adjustable fixture for a nursing instrument and a nursing instrument.

Background

The light-feeding instrument is a phototherapy product irradiated by red light, and has the main functions of preventing and controlling myopia and relieving dryness and pain of eyes caused by long-time eye use. The light-feeding instrument integrates red light with the wavelength of 630-650 nanometers which is beneficial to human bodies in natural light to replace the natural light, and irradiates retina with safe power and effective time, so that the retina is promoted to generate and release more dopamine, and the eye axis is restrained from extending, thereby achieving the purpose of controlling myopia growth.

The light-feeding instrument is mainly composed of a shell, a slide rail, a red light generator, an ocular, a fixing device and a power mechanism. The sliding rail is arranged on the inner surface of the shell, the red light generator is arranged in the fixing device, the fixing device is slidably arranged on the inner surface of the shell through the sliding rail, the fixing device is connected with the power mechanism, and the power mechanism can drive the fixing device to move transversely and longitudinally on the sliding rail, so that the red light generator arranged in the fixing device can change the transverse distance and the longitudinal distance between the red light generator and the ocular lens. Wherein, the fixing device drives the red light generator to transversely move so as to adapt to users with different interpupillary distances, and the longitudinal movement is used for improving the visual adjustment sensitivity of the users. However, the existing fixing device has processing errors and assembly errors, which easily cause the red light emitted by the red light generator arranged in the fixing device to slightly deviate relative to the ocular lens, so that the red light cannot vertically irradiate to the ocular lens, and the effect of irradiation treatment of the light instrument is reduced.

In view of the foregoing, there is a need to provide a new solution for an adjustable fixture for a light feeding instrument, in which an assembler can adjust the position of the red light generator and make the emitted red light vertically irradiate the eyepiece through the adjustable fixture even if the adjustable fixture has processing errors and assembly errors and causes the red light emitted by the red light generator during initial installation to slightly deviate from the eyepiece, thereby effectively preventing the irradiation treatment of the light feeding instrument from being reduced.

Disclosure of Invention

To address at least one or more of the technical problems noted above, the present disclosure proposes, in various aspects, an adjustable fixture for a nursing instrument.

In a first aspect, the present disclosure provides an adjustable fixture for a nursing instrument. The adjustable fixing device comprises: a fixing part which is arranged in the shell of the light feeding instrument and is provided with an accommodating space; the movable part is rotatably arranged in the accommodating space of the fixed part and is used for installing the red light generator of the light feeding instrument; the movable part is configured to be adjusted and rotated in the accommodating space so as to drive the red light generator to rotate and stop to a preset position, and the red light emitted by the red light generator is parallel or coincident with the central axis of the eyepiece of the light feeding instrument.

In some embodiments, the receiving space is a spherical cavity having an opening, and the movable member includes a ball portion fitted into the spherical cavity and a connection portion connected to the ball portion and protruding from one of the openings, the connection portion being for mounting the red light generator.

In some embodiments, the cross-sectional area of the spherical cavity is tapered along a set first direction from the geometric center of the spherical cavity to one end of the spherical cavity and a second direction from the geometric center of the spherical cavity to the other end of the spherical cavity.

In some embodiments, the connection includes an interior cavity configured to matingly receive the red light generator.

In some embodiments, the securing means comprises: a first fixing piece arranged in the shell of the light feeding instrument; and the second fixing piece is detachably connected with the first fixing piece and forms the accommodating space between the first fixing piece and the second fixing piece.

In some embodiments, the fixing part includes at least two fastening bolts penetrating the second fixing member and screwed into the first fixing member, and the fastening bolts are provided at both sides of the receiving space.

In some embodiments, the second fixing member includes an arch portion having a first space and two mounting ears formed by extending outward from both ends of the arch portion, each of the mounting ears is provided with a through hole for passing the fastening bolt, and the first space is a portion of the receiving space.

In some embodiments, the first fixing member includes a mounting plate having a second space, a relief groove provided on the mounting plate and allowing the connection portion of the movable member to swing therein, and a screw hole provided on the mounting plate for screwing in the fastening bolt, the second space being a remaining portion of the receiving space.

In a second aspect, the present disclosure provides a light meter. The light feeding instrument comprises the adjustable fixing device.

In some embodiments, the light feeding instrument further comprises a shell, a driving mechanism and a transmission mechanism, wherein the shell comprises an upper shell, a lower shell, a first ocular and a second ocular which are clamped between the upper shell and the lower shell, the driving mechanism and the transmission mechanism are connected with each other and are all arranged on the inner side surface of the lower shell, the adjustable fixing device is slidably arranged on the inner side surface of the lower shell and is connected with the transmission mechanism, and the driving mechanism is configured to drive the transmission mechanism to drive the adjustable fixing device to slide and change the transverse position and the longitudinal position of the adjustable fixing device.

In some embodiments, the adjustable fixing devices are two, one of the adjustable fixing devices is arranged on the inner surface of the lower shell through a first sliding rail, the other adjustable fixing device is arranged on the inner surface of the lower shell through a second sliding rail, the first sliding rail and the second sliding rail are arranged in a splayed mode, so that the two adjustable fixing devices are opposite to the first eyepiece and the second eyepiece respectively, the driving mechanism comprises a driving motor with a driving shaft and a driving gear arranged on the driving shaft, the driving motor is arranged on the lower shell or the upper shell, the driving mechanism comprises a first driven gear in meshed connection with the driving gear and a second driven gear in meshed connection with the first driven gear, the first driven gear and the second driven gear are rotatably arranged on the inner surface of the lower shell, and the driving mechanism further comprises a first straight rack fixedly arranged on the adjustable fixing device and parallel to the first sliding rail and a second straight rack fixedly arranged on the other adjustable fixing device and in meshed connection with the second straight rack and the second driven gear.

By means of the adjustable fixing device for the light feeding instrument, the red light generator is installed in the movable part of the adjustable fixing device, the movable part is arranged in the accommodating space of the fixing part of the adjustable fixing device, and the position of the movable part in the accommodating space is adjusted to adjust the position of the red light generator relative to the central axis of the ocular so that the red light emitted by the red light generator can be parallel to or coincide with the central axis of the ocular of the light feeding instrument. In this way, even if the adjustable fixing device has processing errors and assembly errors and causes the red light emitted by the red light generator to slightly deviate relative to the ocular lens during initial installation, an assembler can adjust the position of the red light generator through the adjustable fixing device and vertically emit the red light emitted by the red light generator to the ocular lens, so that the irradiation treatment of the light feeding instrument can be effectively prevented from being reduced.

Drawings

The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to similar or corresponding parts and in which:

FIG. 1 is an exploded view of an adjustable fixation device according to a first embodiment of the present disclosure;

FIG. 2 illustrates an assembled schematic view of the fixing components of an adjustable fixing device according to a first embodiment of the present disclosure;

FIG. 3 is an enlarged view of a portion of the securing member shown in FIG. 2;

FIG. 4 shows a drive mechanism, transmission mechanism and adjustable fixture for a light meter in accordance with a second embodiment of the present disclosure;

fig. 5 is a perspective view of a light feeding instrument according to a second embodiment of the present disclosure.

Reference numerals illustrate:

1. a light feeding instrument; 11. a housing; 11a, upper shell; 11b, a lower housing; 12. a driving mechanism; 121. a driving motor; 122. a drive gear; 13. a transmission mechanism; 131. a first driven gear; 132. a second driven gear; 133. a first straight rack; 134. a second spur rack; 14. an eyepiece; 141. a first eyepiece; 142. a second eyepiece; 15. a red light generator; 16. an adjustable fixing device; 161. a fixing member; 1611. a first fixing member; 1611a, a mounting plate; 1611b, a relief groove; 1612. a second fixing member; 1612a, an arch; 1612b, mounting ears; 1613. an accommodation space; 1613a, a second space; 1613b, a first space; 1614. a through hole; 1615. a fastening bolt; 162. a movable member; 1621. a ball head portion; 1622. a connection part; 1622a, a lumen; 171. a first slide rail; 172. a second slide rail; 18. an opening.

Detailed Description

The following description of the embodiments of the present disclosure will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the disclosure. Based on the embodiments in this disclosure, all other embodiments that may be made by those skilled in the art without the inventive effort are within the scope of the present disclosure.

It should be understood that the terms "comprises" and "comprising," when used in this specification and the claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the present disclosure is for the purpose of describing particular embodiments only, and is not intended to be limiting of the disclosure. As used in the specification and claims of this disclosure, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and/or" as used in the present disclosure and claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

As used in this specification and the claims, the term "if" may be interpreted as "when..once" or "in response to a determination" or "in response to detection" depending on the context. Similarly, the phrase "if a determination" or "if a [ described condition or event ] is detected" may be interpreted in the context of meaning "upon determination" or "in response to determination" or "upon detection of a [ described condition or event ]" or "in response to detection of a [ described condition or event ]".

Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

According to one embodiment of the present disclosure, as shown in FIGS. 1 and 2, an adjustable fixture 16 for a nursing instrument 1 is provided. The adjustable fixation device 16 includes a fixed member 161 and a movable member 162. The fixing member 161 is provided in the housing 11 of the nursing instrument 1 and has a receiving space 1613. The movable part 162 is rotatably provided in the receiving space 1613 of the fixed part 161 and is used for mounting the red light generator 15 of the nursing instrument 1. The movable part 162 is configured to be adjusted and rotated in the accommodation space 1613 to drive the red light generator 15 to rotate and stop to a predetermined position, and to make the red light emitted by the red light generator 15 parallel or coincide with the central axis of the eyepiece 14 of the light meter 1.

In design, it is required to ensure that the red light emitted by the red light generator 15 can vertically emit out of the eyepiece 14 of the light-feeding instrument 1, that is, the red light emitted by the red light generator 15 can be parallel or coincident with the central axis of the eyepiece 14 of the light-feeding instrument 1, so that the red light emitted by the red light generator 15 of the light-feeding instrument 1 can effectively act on human eyes, and further the purpose of effective irradiation is achieved. In the actual assembly process, the red light emitted by the red light generator 15 cannot vertically irradiate the eyepiece 14 due to the existence of machining errors, and further adjustment is needed to ensure that the red light emitted by the red light generator 15 can be parallel or coincident with the central axis of the eyepiece 14 of the light instrument 1. In this embodiment, an adjustable fixing device 16 for a light feeding instrument 1 is provided, the red light generator 15 is fixed in a movable part 162, the movable part 162 is rotatably arranged in a containing cavity of a fixed part 161, so that the movable part 162 can be operated to drive the red light generator 15 to rotate in the containing cavity, and the red light generator 15 is stopped at a preset position, wherein the preset position is a position where the red light emitted by the red light generator 15 is parallel or coincident with the central axis of an eyepiece 14 of the light feeding instrument 1. In this way, even if there are machining errors and assembly errors in the adjustable fixing device 16 and the red light emitted by the red light generator 15 at the initial installation is slightly deviated relative to the eyepiece 14, the assembler adjusts the position of the red light generator 15 by the adjustable fixing device 16 and makes the red light emitted by the red light generator vertically shoot to the eyepiece 14, thereby effectively avoiding the irradiation treatment of the light instrument 1 from being reduced.

In some embodiments, as shown in fig. 2, the receiving space 1613 is a spherical cavity having an opening 18. The movable member 162 includes a ball portion 1621 fitted into the spherical cavity and a connecting portion 1622 connected to the ball portion 1621 and protruding from the opening 18. The connection part 1622 is for mounting the red light generator 15. It should be noted that the spherical cavity is understood to be a cavity that approximates a sphere, allowing the designer to reconfigure openings, through holes, and/or grooves, etc., as desired, in addition to allowing the openings 18 to be provided in the spherical cavity.

For example, the receiving space 1613 provided on the fixing member 161 is a spherical cavity having the opening 18. The ball part 1621 of the movable member 162 can be placed in the spherical cavity of the fixed member 161 through the opening 18, and the connection part 1622 of the movable member 162 is protruded from the opening 18, and the red light generator 15 is mounted in the connection part 1622. The shape of the ball head part 1621 and the shape of the spherical cavity can be completely matched, so that the ball head part 1621 can make corresponding rotation in the spherical cavity against proper damping force and stop at a preset position, thereby realizing the purpose of adjusting the position of the light rays emitted by the red light generator 15 relative to the central axis of the ocular 14 of the light meter 1. In the present embodiment, the accommodating space 1613 is designed as a spherical cavity and one end of the movable member 162 is correspondingly designed as a ball portion 1621, so that the ball portion 1621 can implement the rotation within the accommodating space 1613 to the maximum extent, improving the applicability of the adjustable fixing device 16, of course, the accommodating space 1613 is not limited to the spherical cavity and one end of the movable member 162 is not limited to the ball portion 1621, as long as the rotation of the movable member 162 within the accommodating space 1613 can be implemented, which is not limited herein and is only illustrative.

In some embodiments, as shown in fig. 3, the cross-sectional area of the spherical cavity is gradually decreasing along the set first and second directions. The first direction is a direction from a geometric center of the spherical cavity to one end of the spherical cavity. And the second direction is from the geometric center of the spherical cavity to the other end of the spherical cavity. For example, the first direction is the X direction shown in fig. 3, the second direction is the Y direction shown in fig. 3, in this embodiment, the geometric center of the spherical cavity is taken as a starting point, and the cross-sectional area of the spherical cavity gradually decreases along the X direction and the Y direction, so that the limiting effect of the ball head part 1621 of the movable part 162 in the spherical cavity of the fixed part 161 along the X direction and the Y direction can be achieved, the ball head part 1621 is prevented from falling off from the spherical cavity, and the ball head part 1621 is ensured to effectively rotate in the spherical cavity, thereby driving the red light generator 15 to rotate.

In some embodiments, the connection 1622 includes an interior cavity 1622a configured to matingly receive the red light generator 15. In this way, the red light generator 15 can be reliably installed in the inner cavity 1622a of the connecting portion 1622, and the non-artificial rotation or displacement of the red light generator 15 relative to the connecting portion 1622 is avoided, so that the accuracy of the adjustable fixing device 16 in adjusting the emergent angle of the red light relative to the eyepiece 14 is further improved.

In some embodiments, the securing member 161 includes a first securing member 1611 and a second securing member 1612. First mount 1611 is disposed within housing 11 of light meter 1. The second fixing member 1612 is detachably coupled to the first fixing member 1611 and forms a receiving space 1613 between the first fixing member 1611 and the second fixing member 1612. In this embodiment, the fixing member 161 is split into the first fixing member 1611 and the second fixing member 1612, so that when the movable member 162 is installed, the movable member 162 can be placed in the first fixing member 1611, and then the second fixing member 1612 is placed on the movable member 162, so that the first fixing member 1611 and the second fixing member 1612 can be buckled to form the accommodating space 1613, and the movable member 162 is rotatably installed in the accommodating space 1613. The provision of the first and

second fixing members

1611 and 1612 facilitates the installation of the movable and fixed

members

162 and 161, and the disassembly and repair of the fixed member 161, reducing the structural complexity of the adjustable fixing device 16.

In some embodiments, the fixing member 161 includes at least two fastening bolts 1615 penetrating the second fixing member 1612 and screwed into the first fixing member 1611, and such that both sides of the receiving space 1613 are provided with the fastening bolts 1615. In this embodiment, when the first fixing member 1611 and the second fixing member 1612 are fastened to the movable component 162, fastening of the first fixing member 1611 and the second fixing member 1612 can be achieved through the fastening bolts 1615, so that effective assembly of the first fixing member 1611 and the second fixing member 1612 is ensured, meanwhile, fastening bolts 1615 are disposed on two sides of the accommodating space 1613, balance of fastening effect of the fastening bolts 1615 is ensured, and accordingly, inclination of the second fixing member 1612 relative to the first fixing member 1611 caused by the fact that the fastening bolts 1615 are disposed on one side is avoided, and further, the accommodating space 1613 formed by the first adjusting joint and the second fixing member 1612 cannot be effectively adjusted with the ball head 1621 of the movable component 162.

In some embodiments, as shown in fig. 1, the second fixing member 1612 includes an arch 1612a having a first space 1613b and two mounting ears 1612b formed by extending outward from both ends of the arch 1612 a. Each of the mounting ears 1612b is provided with a through hole 1614 for passing through the fastening bolt 1615. The first space 1613b is a portion of the accommodation space 1613. The first fixing member 1611 includes a mounting plate 1611a having a second space 1613a, a relief groove 1611b provided on the mounting plate 1611a and allowing the connection portion 1622 of the movable member 162 to swing therein, and a screw hole provided on the mounting plate 1611a for screwing in the fastening bolt 1615. The second space 1613a is the remaining portion of the receiving space 1613. In this embodiment. The first space 1613b of the arch portion 1612a is configured to receive a portion of the ball portion 1621 of the movable member 162, the second space 1613a of the mounting plate 1611a is configured to receive the remaining portion of the ball portion 1621 of the movable member 162, and the first space 1613b and the second space 1613a are combined together to form a complete receiving space 1613. The second fixing member 1612 can be mounted to the first fixing member 1611 by two mounting lugs 1612b formed by extending the two ends of the arched portion 1612a, and fastening the first fixing member 1611 and the second fixing member 1612 can be achieved by fastening bolts 1615 passing through holes 1614 provided in the mounting lugs 1612b and screwing into threaded holes in the mounting plate 1611 a. The avoiding groove 1611b which is arranged on the mounting plate 1611a and allows the connecting part 1622 of the movable part 162 to swing in the avoiding groove 1611b can realize the primary limiting effect on the connecting part 1622 in the radial direction of the connecting part 1622 of the movable part 162, so that excessive rotation of the connecting part 1622 driven by the ball part 1621 is avoided, and the adjusting efficiency of the adjustable fixing device 16 can be improved.

According to another embodiment of the present disclosure, as shown in fig. 4 and 5, a light meter 1 is provided. The light meter 1 includes the adjustable fixture 16 described above. In this embodiment, the red light generator 15 is mounted in the movable part 162 of the adjustable fixing device 16, and the movable part 162 is disposed in the accommodating space 1613 of the fixed part 161 of the adjustable fixing device 16, so that the position of the movable part 162 in the accommodating space 1613 is adjusted to adjust the position of the red light generator 15 relative to the central axis of the eyepiece 14, so that the red light emitted by the red light generator 15 can be parallel to or coincide with the central axis of the eyepiece 14 of the light meter 1. In this way, even if there are machining errors and assembly errors in the adjustable fixing device 16 and the red light emitted by the red light generator 15 at the initial installation is slightly deviated relative to the eyepiece 14, the assembler adjusts the position of the red light generator 15 by the adjustable fixing device 16 and makes the red light emitted by the red light generator vertically shoot to the eyepiece 14, thereby effectively avoiding the irradiation treatment of the light instrument 1 from being reduced.

In some embodiments, the light meter 1 further comprises a housing 11, a drive mechanism 12, and a transmission mechanism 13. The housing 11 includes upper and

lower housings

11a and 11b, and first and

second eyepieces

141 and 142 interposed between the upper and

lower housings

11a and 11 b. The driving mechanism 12 and the transmission mechanism 13 are connected to each other and are provided on the inner side surface of the lower housing 11 b. An adjustable fixing device 16 is slidably provided on the inner side of the lower housing 11b and is connected to the transmission mechanism 13. The driving mechanism 12 is configured to drive the transmission mechanism 13 to slide the adjustable fixing device 16 and change the lateral position and the longitudinal position of the adjustable fixing device 16. In the present embodiment, the driving mechanism 12 is connected with the transmission mechanism 13 and fixedly arranged on the inner surface of the lower shell 11b, and the adjustable fixing device 16 is connected with the transmission mechanism and the adjustable fixing device 16 is slidably arranged on the inner surface of the lower shell 11b, so that when a user uses the light instrument 1 to adjust the pupil distance and the visual sensitivity, the driving mechanism 12 can drive the transmission mechanism 13 to rotate, the transmission mechanism 13 can drive the adjustable fixing device 16 to slide on the inner surface of the lower shell 11b, and the transverse position and the longitudinal position of the adjustable fixing device 16 are changed, so that the purpose of adjusting the pupil distance and the visual sensitivity suitable for the user is achieved.

In some embodiments, as shown in fig. 4, there are two adjustable fixing devices 16, wherein one adjustable fixing device 16 is disposed on the inner surface of the lower housing 11b through a first sliding rail 171, and the other adjustable fixing device 16 is disposed on the inner surface of the lower housing 11b through a second sliding rail 172. The first rail 171 and the second rail 172 are arranged in a splayed manner such that the two adjustable fixtures 16 are opposite the first eyepiece 141 and the second eyepiece 142, respectively.

The driving mechanism 12 comprises a driving motor 121 with a driving shaft and a driving gear 122 arranged on the driving shaft, the driving motor 121 is arranged on the lower shell 11b or the upper shell 11a, the transmission mechanism 13 comprises a first driven gear 131 in meshed connection with the driving gear 122 and a second driven gear 132 in meshed connection with the first driven gear 131, the first driven gear 131 and the second driven gear 132 are rotatably arranged on the inner surface of the lower shell 11b, the transmission mechanism 13 further comprises a first straight rack 133 fixedly arranged on one adjustable fixing device 16 and parallel to a first sliding rail 171 and a second straight rack 134 fixedly arranged on the other adjustable fixing device 16 and parallel to a second sliding rail 172, the first straight rack 133 is in meshed connection with the first driven gear 131, and the second straight rack 134 is in meshed connection with the second driven gear 132.

For example, two adjustable fixtures 16 are defined as a first adjustable fixture 16 and a second adjustable fixture 16, respectively. The first sliding rail 171 and the second sliding rail 172 are both disposed on the inner surface of the lower housing 11b, and the first sliding rail 171 and the second sliding rail 172 are arranged in a splayed shape, the first adjustable fixing device 16 is disposed on the first sliding rail 171, and the second adjustable fixing device 16 is disposed on the second sliding rail 172. The first adjustable fixing device 16 is opposite to the first eyepiece 141, and the second adjustable fixing device 16 is opposite to the second eyepiece 142. Because the first slide rail 171 and the second slide rail 172 are arranged in a splayed manner, when the first adjustable fixing device 16 and the second adjustable fixing device 16 slide synchronously along the first slide rail 171 and the second slide rail 172, the first adjustable fixing device 16 can change the transverse position and the longitudinal position at the same time, particularly, when the first adjustable fixing device 16 and the second adjustable fixing device 16 move towards one side close to the eyepiece 14, the transverse distance and the longitudinal distance between the first adjustable fixing device 16 are reduced, and therefore, the nursing instrument 1 can be suitable for users with smaller pupil distance to wear; when the first adjustable fixing device 16 and the second adjustable fixing device 16 move towards the side far away from the ocular lens 14, the transverse distance and the longitudinal distance between the first adjustable fixing devices 16 are increased, so that the nursing instrument 1 can be suitable for users with large interpupillary distance to wear.

The movement of the adjustable fastening means 16 can be achieved by the combined action of the transmission means 13 and the drive means 12. Specifically, a first spur rack 133 parallel to the first sliding rail 171 is provided on the first adjustable fixing device 16, and a second spur rack 134 parallel to the second sliding rail 172 is provided on the second adjustable fixing device 16. The transmission mechanism 13 includes a first driven gear 131 and a second driven gear 132 which are meshed with each other, the first driven gear 131 is meshed with a first straight rack 133, the second driven gear 132 is meshed with a second straight rack 134, the driving mechanism 12 includes a driving motor 121 having a driving shaft and a driving gear 122 provided on the driving shaft, and the driving gear 122 is meshed with the first driven gear 131. As shown in fig. 4, when the user needs to reduce the lateral distance and the longitudinal distance between the first adjustable fixing device 16 and the second adjustable fixing device 16 of the light feeding instrument 1 to adapt to the smaller pupil distance, the driving motor 121 rotates clockwise, the driving gear 122 connected with the driving shaft of the driving motor 121 also rotates clockwise (S1 direction shown in fig. 4), the first driven gear 131 connected with the driving gear 122 in a meshed manner rotates counterclockwise (S2 direction shown in fig. 4), the first straight rack 133 connected with the first driven gear 131 in a meshed manner drives the first adjustable fixing device 16 to move along the first sliding rail 171 (S4 direction shown in fig. 4) towards the direction approaching the first eyepiece 141, meanwhile, the second driven gear 132 connected with the first driven gear 131 in a meshed manner rotates clockwise (S3 direction shown in fig. 4), the second straight rack 134 connected with the second driven gear 132 drives the second adjustable fixing device 16 to move along the second sliding rail 172 (S5 direction shown in fig. 4) towards the direction approaching the second eyepiece 142, and finally the lateral distance between the first adjustable fixing device 16 and the second adjustable fixing device 16 is reduced. Conversely, the lateral distance and the longitudinal distance of the first adjustable fixing device 16 and the second adjustable fixing device 16 can be increased to achieve the purpose of adapting to a larger pupil distance, which is not described herein.

While various embodiments of the present disclosure have been shown and described herein, it will be obvious to those skilled in the art that such embodiments are provided by way of example only. Numerous modifications, changes, and substitutions will occur to those skilled in the art without departing from the spirit and scope of the present disclosure. It should be understood that various alternatives to the embodiments of the disclosure described herein may be employed in practicing the disclosure. The appended claims are intended to define the scope of the disclosure and are therefore to cover all equivalents or alternatives falling within the scope of these claims.

Claims

1. An adjustable fixture for a nursing instrument, the adjustable fixture comprising:

a fixing part which is arranged in the shell of the light feeding instrument and is provided with an accommodating space; and

the movable part is rotatably arranged in the accommodating space of the fixed part and is used for installing the red light generator of the light feeding instrument;

the movable part is configured to be adjusted and rotated in the accommodating space so as to drive the red light generator to rotate and stop to a preset position, and the red light emitted by the red light generator is parallel or coincident with the central axis of the eyepiece of the light feeding instrument.

2. The adjustable fixing apparatus according to claim 1, wherein the receiving space is a spherical cavity having an opening, and the movable member includes a ball portion fitted into the spherical cavity and a connection portion connected to the ball portion and protruding from one of the openings, the connection portion being for mounting the red light generator.

3. The adjustable fixation apparatus of claim 2 wherein the cross-sectional area of the spherical cavity is tapered along a set first direction and a second direction, the first direction being from the geometric center of the spherical cavity to one end of the spherical cavity and the second direction being from the geometric center of the spherical cavity to the other end of the spherical cavity.

4. The adjustable fixation apparatus of claim 2 wherein the connection portion includes an interior cavity adapted to matingly receive the red light generator.

5. The adjustable fixation device of claim 2 wherein the fixation member comprises:

a first fixing piece arranged in the shell of the light feeding instrument;

and the second fixing piece is detachably connected with the first fixing piece and forms the accommodating space between the first fixing piece and the second fixing piece.

6. The adjustable fixing apparatus according to claim 5, wherein the fixing member comprises at least two fastening bolts penetrating through the second fixing member and screwed into the first fixing member, and such that both sides of the receiving space are provided with the fastening bolts.

7. The adjustable fixing apparatus according to claim 6, wherein the second fixing member comprises an arch portion having a first space and two mounting lugs formed by extending outward from both ends of the arch portion, each of the mounting lugs being provided with a through hole for passing the fastening bolt, the first space being a part of the accommodation space.

8. The adjustable fixing apparatus according to claim 7, wherein the first fixing member comprises a mounting plate having a second space, a relief groove provided on the mounting plate and allowing the connection portion of the movable member to swing therein, and a screw hole provided on the mounting plate for screwing in the fastening bolt, the second space being a remaining portion of the accommodating space.

9. A light meter comprising the adjustable attachment of any one of claims 1 to 8.

10. The light feeding instrument of claim 9, further comprising a housing, a drive mechanism and a transmission mechanism, wherein the housing comprises an upper housing and a lower housing and a first eyepiece and a second eyepiece sandwiched between the upper housing and the lower housing, the drive mechanism and the transmission mechanism are connected to each other and are both disposed on an inner side of the lower housing, the adjustable fixing device is slidably disposed on the inner side of the lower housing and is connected to the transmission mechanism, and the drive mechanism is configured to drive the transmission mechanism to slide the adjustable fixing device and change a lateral position and a longitudinal position of the adjustable fixing device.

11. The light meter of claim 10, wherein two adjustable fixing devices are provided, one of the adjustable fixing devices is disposed on the inner surface of the lower housing through a first sliding rail, the other adjustable fixing device is disposed on the inner surface of the lower housing through a second sliding rail, the first sliding rail and the second sliding rail are arranged in a splayed shape, so that the two adjustable fixing devices are respectively opposite to the first eyepiece and the second eyepiece, the driving mechanism comprises a driving motor with a driving shaft and a driving gear disposed on the driving shaft, the driving motor is disposed on the lower housing or the upper housing, the transmission mechanism comprises a first driven gear meshed with the driving gear and a second driven gear meshed with the first driven gear, the first driven gear and the second driven gear are rotatably disposed on the inner surface of the lower housing, the transmission mechanism further comprises a first adjustable fixing device which is fixedly disposed on the adjustable fixing device and is parallel to the first sliding rail, a second rack which is fixedly disposed on the other rack and is directly meshed with the second driven gear, and the transmission mechanism is directly meshed with the second driven gear.