CN216927217U

CN216927217U - Light path switching device

Info

Publication number: CN216927217U
Application number: CN202220352857.XU
Authority: CN
Inventors: 马运胜; 宋宪振; 崔学坤; 付立元
Original assignee: Shandong High Precision Bio Diagnostic Analysis Industry Technology Research Institute Co Ltd
Current assignee: Shandong High Precision Bio Diagnostic Analysis Industry Technology Research Institute Co Ltd
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2022-07-08
Anticipated expiration: 2032-02-21

Abstract

The utility model discloses an optical path switching device, which comprises a filtering component and a transmission mechanism, wherein the transmission mechanism comprises a gear and a rack, the rack is used for driving the filtering component to move so as to switch optical paths, the optical path switching device also comprises a floating component, the floating component is connected with the rack, and the floating direction of the rack is vertical to the moving direction of the rack; so, can make gear, rack closely laminate at the meshing in-process, improve driven stability and transmission efficiency, prolong the life of device.

Description

Light path switching device

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a light path switching device.

Background

The optical path switching equipment is applied to selective permeation of monochromatic light in medical inspection and biological experiments so as to complete detection work more accurately. The existing optical path switching device generally performs transmission through a transmission structure of a gear rack, and the structure has the problems after long-term use that: the meshing of the gear and the rack is not compact, the transmission effect is poor, and even the gear and the rack are damaged.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to at least partially solve the above technical problems and provides an optical path switching apparatus.

The technical scheme adopted by the utility model is as follows:

the utility model provides an optical path auto-change over device and medical apparatus, includes filtering subassembly and drive mechanism, drive mechanism includes gear and rack, the rack is used for driving filtering subassembly removes in order to carry out the optical path and switches, still includes the subassembly that floats, the subassembly that floats with the rack is connected, the direction of floating of rack is perpendicular rather than the direction of movement.

Further, the floating assembly comprises an elastic member, and the elastic member is arranged on one side surface of the rack in a matching mode and/or arranged in the middle of the same side surface of the rack.

Further, the floating assembly comprises an elastic member, and the elastic member is arranged on one side face of the rack in a matching mode and/or arranged in the middle of the non-same side face of the rack.

Furthermore, the device also comprises an installation frame used for bearing the filtering component and the transmission mechanism, and a guide structure used for guiding the floating direction of the rack is arranged between the installation frame and the rack.

Furthermore, the guide structure comprises a guide rod and a guide groove matched with the guide rod, the guide rod is arranged on the rack, and the guide groove is arranged on the mounting rack; or, the guide rod is arranged on the mounting frame, and the guide groove is arranged on the rack.

Furthermore, the guide structure comprises a guide rod, a guide groove matched with the guide rod and a support plate fixedly arranged on the mounting frame, the guide rod is arranged on the end face of the rack, and the guide groove is arranged on the support plate; or, the guide rod is arranged on the support plate, and the guide groove is arranged on the rack.

Furthermore, the elastic piece is sleeved on the outer edge of the guide rod.

Further, the gear is driven by driving motor, the mounting bracket is equipped with and is used for the holding dodge the groove of gear.

Furthermore, the device also comprises a circuit board, the driving motor is electrically connected with the circuit board, and the circuit board is used for controlling the forward and reverse rotation of the driving motor.

Furthermore, the filtering component comprises a filter and a mounting groove for accommodating the filter.

Compared with the prior art, the utility model has the beneficial effects that: the device is provided with a floating assembly, the floating assembly is connected with the rack, and the floating direction of the rack is vertical to the moving direction of the rack; so, can make gear, rack closely laminate at the meshing in-process, improve driven stability and transmission efficiency, prolong the life of device.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model.

Fig. 1 is a schematic structural diagram of an optical path switching apparatus according to the present embodiment;

FIG. 2 is a first perspective view of the optical path switching apparatus according to the present embodiment;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a second perspective view of the optical path switching apparatus according to the embodiment;

FIG. 5 is a perspective view of the support plate of the present embodiment;

fig. 6 is a schematic structural view of the shielding plate of the present embodiment.

Reference numerals:

1-a base; 2-a mounting rack; 2 a-a first region; 2 b-a second region; 3-driving a motor; 4-a circuit board; 5-a first monitoring element; 51-light-transmitting holes; 6-gear; 7-a rack; 8-a support plate; 81-second bolt hole; 82-a guide groove; 9-a second monitoring element; 91-a transmitter; 92-a receiver; 10-a light filtering component; 101-mounting grooves; 102-an optical filter; 11-a guide post; 12-an elastic member; 13-avoidance groove.

Detailed Description

The technical solution in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

It is to be understood that the described embodiments are merely some embodiments and not all embodiments of the present application, and that the following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application and its applications.

Example (b):

in the present embodiment, as shown in fig. 1 and fig. 2, the optical path switching device mainly includes a filter assembly 10 and a transmission mechanism, the transmission mechanism includes a gear 6 and a rack 7, and the filter assembly 10 includes a filter 102 and a mounting groove 101 for accommodating the filter 102. Moreover, the optical filtering component 10 and the transmission mechanism of the optical path switching device are arranged on the mounting frame 2, the mounting frame 2 is arranged on the base 1 in a sliding mode, the contact surface of the two is pasted with the Teflon adhesive tape, the friction force between the two is reduced by utilizing the lubricating function of the Teflon adhesive tape, and the smoothness of the optical path switching device when the optical path switching device moves on the base 1 is improved.

As shown in fig. 2, the mounting groove 101 is located in the first region 2a of the mounting frame 2, the transmission mechanism is located in the second region 2b of the mounting frame 2, and the second region 2b is groove-shaped, so that the transmission mechanism can be accommodated conveniently.

As shown in fig. 1 and 2, the transmission mechanism includes a gear 6 and a rack 7, the rack 7 is used for driving the filter assembly 10 to move for switching the optical path, and the transmission mechanism further includes a floating assembly, the floating assembly is connected with the rack 7, and the floating direction of the rack 7 is perpendicular to the moving direction of the rack. The moving direction of the optical filter 102 is left and right, so that the switching of the optical filter 102 with required parameters is completed, and the rack 7 can float up and down under the action of the floating assembly 10. So, can make gear 6 and rack 7 closely laminate at the meshing in-process through setting up the subassembly that floats, improve driven stability and transmission efficiency, the life of extension means.

In the present embodiment, as shown in fig. 1 and fig. 2, the gear 6 is driven by the driving motor 3, the mounting frame 2 is provided with an avoidance groove 13, and the gear 6 is mounted in the avoidance groove 13 to avoid interference between the mounting frame 2 and an output shaft of the driving motor 3 when the mounting frame is driven by the transmission mechanism to reciprocate left and right; in addition, in order to facilitate automation, the light path switching device is further provided with a circuit board 4, the driving motor 3 is electrically connected with the circuit board 4, and the circuit board 4 can control the start and stop and the forward and reverse rotation of the driving motor 3, so that the filtering component 10 can reciprocate leftwards and rightwards, and light path switching is realized.

Specifically, as shown in fig. 1, fig. 2 and fig. 4, the gear 6, the rack 7 and the filter component 10 are installed on the same side of the mounting frame 2, the driving motor 3 is installed on the rear side of the base 1, a through avoiding groove 13 is formed in the middle of the gear 6 and the driving motor 3, and the avoiding groove 13 is located above the rack 7, so that the output shaft of the driving motor 3 drives the gear 6 to rotate to drive the rack 7 to reciprocate left and right, and further synchronously drives the mounting frame 2 to reciprocate left and right on the base 1, thereby avoiding the problem of interference between the output shaft of the driving motor 3 and the moving mounting frame 2.

Specifically, the driving motor 3 is a stepping motor, and the stepping motor has high calculation accuracy and fast response time.

In the present embodiment, as shown in fig. 2 and 3, the floating assembly includes an elastic member 12, and the elastic member 12 is symmetrically disposed on one side surface of the rack 7, such as: the two elastic members 12 are located on the lower end surface of the rack bar 7 and are disposed in a suitable manner, which can improve the stability of the rack bar 7.

Specifically, the number of the elastic members 12 is plural.

It will be appreciated that the resilient member 12 may also be provided centrally on the same side of the rack 7.

It will be appreciated that the resilient member 12 may also be suitably located on one side of the toothed rack 7 and may also be centrally located on the same side of the toothed rack 7.

It can be understood that when the rack 7 floats up and down by using the elastic member 12 alone, one end of the elastic member 12 may be fixedly connected with the rack 7, and the other end thereof may be fixedly connected with the mounting frame 2.

In this embodiment, the floating assembly comprises an elastic member 12, and the elastic member 12 is symmetrically disposed on one side surface of the rack 7 and/or disposed in the middle portion of the rack 7 on a different side surface.

It will be appreciated that the resilient members 12 may be located on the same side of the rack 7 or on different sides of the rack 7.

It will be appreciated that the connection between the resilient member 12 and the toothed rack 7 may be on any side other than the side of the toothed rack 7 having teeth.

Preferably, the elastic member 12 is located on the lower side of the rack 7.

It is understood that the elastic member 12 can be a spring or an elastic telescopic rod, or other members with equivalent functions, and is not limited herein.

As shown in fig. 2, 3 and 5, in order to improve the floating stability of the rack 7, a guide structure for guiding the floating direction of the rack 7 is provided between the mounting frame 2 and the rack 7, and the guide structure includes a guide rod 11 and a guide groove 82 adapted to the guide rod 11.

In an implementation manner of the present embodiment, as shown in fig. 2 and fig. 3, the guide rod 11 is disposed on the rack 7, and the guide groove 82 is disposed on the mounting frame 2, so that the rack 7 can stably float in the up-and-down direction, and the problem that the rack 7 tilts in the floating process to cause poor transmission effect of the rack 7 and the gear 6 is avoided.

It will be appreciated that the number of guide rods 11 is adapted to the number of guide slots 82.

In another embodiment of this embodiment, the guide bar 11 is provided on the mounting frame 2, and the guide groove 82 is provided on the rack 7 (not shown).

In order to facilitate production and manufacturing, the guide structure further comprises a support plate 8 fixedly arranged on the mounting frame 2, the guide rod 11 is arranged on the rack 7, and the guide groove 82 is arranged on the support plate 8; alternatively, the guide bar 11 is provided on the support plate 8, and the guide groove 82 is provided on the rack 7.

In this embodiment, as shown in fig. 3, the elastic member 12 is sleeved on the outer edge of the guide rod 11; thus, when the elastic member 12 is a spring, it is ensured that the spring is not deformed and unstable meshing between the gear 6 and the rack 7 is caused.

As shown in fig. 2 and 5, the rack 6 is fixed on the mounting frame 2 by bolts, a first bolt hole (not shown) of the rack 6 has a certain length in the up-and-down direction, and an end face of the bolt has a certain gap with an end face of the rack 6 for up-and-down movement of the rack 6; the second bolt hole 81 of the support plate 8 is fixed to the mounting frame 2 by a bolt.

In this embodiment, as shown in fig. 1, fig. 2, fig. 4 and fig. 6, the optical path switching device further includes a first monitoring element 5 and a second monitoring element 9, which are respectively a shielding plate and a photoelectric sensor, the photoelectric sensor includes a transmitter 91 and a receiver 92, the shielding plate is interposed between the transmitter 91 and the receiver 92, the transmitter 91 transmits a light sensing signal, the receiver 92 receives the light sensing signal, if the shielding plate is interposed between the two, the light sensing signal is shielded, and the receiver 92 cannot receive the light sensing signal, so that the information is fed back to the circuit board 4, and the position information of the optical filter 102 is obtained.

It can be understood that when the shielding plate is fixed on the base 1, the photoelectric sensor can be arranged on the circuit board 4; or, when the photoelectric sensor is fixed on the base 1, the shielding plate is located on the circuit board 4.

In the present embodiment, as shown in fig. 1 and 4, the center-to-center distance between adjacent mounting grooves 101 is d1, the light-transmitting holes 51 are provided on the shielding plate, and the distance between adjacent light-transmitting holes 51 is d2, wherein d1 is d 2. So, can make the shielding plate when following mounting groove 101 left and right reciprocating motion, can feed back the position of mounting groove 101 in real time to learn which light filter 102 of a row is in the middle of the work, the user of being convenient for is to the accuracy of experiment parameter is being controlled.

In the present invention, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The terms "upper", "lower", and the like, indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Claims

1. The utility model provides an optical path auto-change over device, includes filtering subassembly and drive mechanism, drive mechanism includes gear and rack, the rack is used for driving filtering subassembly removes in order to carry out the optical path and switches, its characterized in that still includes the subassembly that floats, the subassembly that floats with the rack is connected, the direction of floating of rack is perpendicular rather than the direction of movement.

2. The optical path switching apparatus according to claim 1, wherein the floating member comprises an elastic member, and the elastic member is disposed on one side surface of the rack and/or disposed in a middle portion of the same side surface of the rack.

3. The optical path switching apparatus according to claim 1, wherein the floating member comprises an elastic member, and the elastic member is disposed on one side surface of the rack and/or disposed in a middle portion of a different side surface of the rack.

4. The optical path switching apparatus according to claim 2 or 3, further comprising a mounting bracket for carrying the filter assembly and the transmission mechanism, wherein a guiding structure for guiding a floating direction of the rack is disposed between the mounting bracket and the rack.

5. The optical path switching apparatus according to claim 4, wherein the guiding structure comprises a guiding rod and a guiding groove adapted to the guiding rod, the guiding rod is disposed on the rack, and the guiding groove is disposed on the mounting bracket; or, the guide rod is arranged on the mounting frame, and the guide groove is arranged on the rack.

6. The optical path switching apparatus according to claim 4, wherein the guiding structure comprises a guiding rod, a guiding groove adapted to the guiding rod, and a supporting plate fixedly disposed on the mounting frame, the guiding rod is disposed on an end surface of the rack, and the guiding groove is disposed on the supporting plate; or, the guide rod is arranged on the supporting plate, and the guide groove is arranged on the rack.

7. The optical path switching apparatus according to claim 6, wherein the elastic member is fitted around an outer edge of the guide rod.

8. The optical path switching apparatus according to claim 4, wherein the gear is driven by a driving motor, and the mounting bracket is provided with an avoiding groove for accommodating the gear.

9. The optical path switching apparatus according to claim 8, further comprising a circuit board, wherein the driving motor is electrically connected to the circuit board, and the circuit board is configured to control forward and reverse rotation of the driving motor.

10. The optical path switching apparatus according to claim 1, wherein the filter assembly includes a filter and a mounting groove for receiving the filter.