CN112748251B

CN112748251B - Reaction cup switching mechanism

Info

Publication number: CN112748251B
Application number: CN202110338270.3A
Authority: CN
Inventors: 王江勇; 杨帆; 姜小燕; 刘国杰; 李大伟
Original assignee: Shandong Kanghua Biomedical Technology Co ltd
Current assignee: Shandong Kanghua Biomedical Technology Co ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2022-10-25
Anticipated expiration: 2041-03-30
Also published as: CN112748251A

Abstract

The invention provides a reaction cup switching mechanism which comprises a shell, wherein a conversion track is arranged on the shell, a fixed shell is arranged above the conversion track, a cup blocking plate and a curved rod are arranged in the fixed shell, the curved rod is hinged with the fixed shell, one end of the curved rod is located at one end of the conversion track, the other end of the curved rod is connected with the cup blocking plate, the cup blocking plate is connected with a power device for driving the cup blocking plate to be close to or far from the conversion track, and when the cup blocking plate moves close to or far from the conversion track, the cup blocking plate pushes the curved rod to slide along the conversion track. Whole structure forms airtight space through the set casing, prevents to influence the luminous reading of instrument, and whole is small, stable in structure, and whole structure can assemble in advance during the installation, and whole structure direct mount is to needing the position when needing, and convenient operation, the part cover that the hinge pin is located between two connecting rods is equipped with the bearing, and very big reduction coefficient of friction when guaranteeing structural stability prolongs life greatly.

Description

Reaction cup switching mechanism

Technical Field

The invention relates to the field of rail changing of full-automatic chemiluminescence immunoassay reaction cups, in particular to a reaction cup switching mechanism.

Background

At present, a rotating electromagnet is adopted in a general reaction cup shifting and rail changing structure to shift and change rails, but the rotating electromagnet has uncontrollable factors such as torque speed and the like which can influence the normal operation of rail changing, and further cause instrument faults; the other is linkage of a horizontal screw rod motor, but the screw rod motor is not allowed to bear radial force, so the structure has a design defect, and the long-term motion can generate unbalance loading to bend the screw rod so as to cause friction loss, so the service life is short, which is the maximum defect; the invention also discloses a gripper structure, but the gripper has the fatal defects of high cost, large occupied space and incapability of being used in a narrow space, so that the rail changing structure of the reaction cup meets the requirements of instruments on a rail changing device of the reaction cup, has low cost, small occupied space, extremely low friction coefficient and long service life, is driven by a stepping motor, and can control the rotating speed, the torque and the like.

Disclosure of Invention

The invention aims to overcome the defects of the traditional technology and provides a reaction cup switching mechanism.

The aim of the invention is achieved by the following technical measures: a reaction cup switching mechanism is characterized in that: the motor casing comprises a housin, be provided with the conversion track on the casing, conversion track top is provided with the set casing, be provided with in the set casing and keep off cup board and curved bar, the curved bar is articulated with the set casing, the one end of curved bar is located the orbital one end of conversion, the other end with keep off the cup board and connect, keep off the cup board and be connected with its power device who is close to or keeps away from the conversion track of drive, keep off the cup board and be close to or keep away from when the conversion orbital motion, it promotes to keep off the cup board the curved bar slides along the conversion track.

As a preferred scheme, a limiting plate is further arranged on the cup blocking plate, one end of the curved rod is located between the limiting plate and the cup blocking plate, and the middle part of the curved rod is hinged to the fixed shell through a rotating shaft.

As a preferable scheme, the curved lever comprises a shifting lever and a connecting rod, one end of the shifting lever is fixedly connected with one end of the connecting rod, the rotating shaft is arranged at the joint of the shifting lever and the connecting rod, one end of the shifting lever, which is far away from the rotating shaft, is located at one end of the conversion track, and the cup blocking plate is located above the conversion track.

As an optimal scheme, the cup blocking plate is connected with the limiting plate through the mounting plate, the cup blocking plate is arranged at one end, close to the conversion track, of the mounting plate, and the limiting plate is arranged at the other end of the mounting plate.

As a preferable scheme, the connecting rod is arranged straightly, the shifting lever is arranged in a bending way at one end close to the conversion track, and the heights of the two ends of the curved rod are lower than that of the middle part.

Preferably, the height of the part of the connecting rod, which is located between the limiting plate and the cup blocking plate, is H1, the distance between the limiting plate and the cup blocking plate is H2, and H2 is greater than H1.

As a preferable scheme, the two parallel connecting rods are arranged, a sliding groove is arranged between the two connecting rods, one ends, far away from the rotating shaft, of the two connecting rods are connected through a hinge pin, a bearing is sleeved on a part, located between the two connecting rods, of the hinge pin, the height of the bearing is H3, and H2 is more than H3 and more than H1.

As a preferred scheme, the power device is a motor, a screw rod is arranged in the fixed shell, and a nut matched with the screw rod is fixedly arranged on the mounting plate.

As a preferable scheme, a guide shaft parallel to the screw rod is further arranged in the fixed shell, and the guide shaft is connected with the mounting plate through a linear bearing.

As a preferred scheme, a photoelectric sensor is further fixedly arranged in the fixed shell, and a photoelectric blocking piece matched with the photoelectric sensor is fixedly arranged on the mounting plate.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the advantages that: the invention provides a switching mechanism for reaction cups, which finishes the processes of rotary pushing and vertical two time-delay synchronous motions by a power device, the whole structure forms a closed space through a fixed shell to prevent the luminous reading of an instrument from being influenced, the whole structure has small volume and stable structure, can be assembled in advance during installation, can be directly installed at a required position when required, is convenient to operate, and the part of a hinge pin positioned between two connecting rods is sleeved with a bearing, thereby greatly reducing the friction coefficient while ensuring the structural stability and greatly prolonging the service life.

The invention is further described with reference to the following figures and detailed description.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a switching mechanism of a reaction cup according to the present invention.

FIG. 2 is a schematic view of a partial structure of a switching mechanism of a cuvette in accordance with the present invention.

FIG. 3 is a schematic view of a partial structure of a switching mechanism of a cuvette in accordance with the present invention.

FIG. 4 is a schematic diagram of a switching track structure of a switching mechanism of a cuvette in accordance with the present invention.

FIG. 5 is a schematic view of a fixed shell structure of a switching mechanism of a reaction cup according to the present invention.

FIG. 6 is a schematic diagram of a structure of a limiting groove of the switching mechanism of the reaction cup according to the present invention.

FIG. 7 is a schematic diagram of a curved bar structure of a switching mechanism of a cuvette in accordance with the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The embodiment is as follows: as shown in fig. 1-6, a reaction cup switching mechanism includes a housing 1, an inner side rail 2, a middle rail 3, and an outer side rail 4 are provided on the housing 1, the middle rail 3 is communicated with the outer side rail 4 through a conversion rail 5, a light shield 6 is provided above the housing 1, a rotatable bracket 7 is provided between the housing 1 and the light shield 6, a fixing shell 8 is provided above the conversion rail 5, in this embodiment, the fixing shell 8 is fixedly connected to the light shield 6 through a bolt, a cup blocking plate 9 and a curved bar 10 are provided in the fixing shell 8, the curved bar 10 is hinged to the fixing shell 8, one end of the curved bar 10 is located at one end of the conversion rail 5, the other end of the curved bar is connected to the cup blocking plate 9, the cup blocking plate 9 is connected to a power device for driving the cup blocking plate to be close to or far away from the conversion rail 5, and when the cup blocking plate 9 is close to or far away from the conversion rail 5, the cup blocking plate 9 pushes the curved bar 10 to slide along the conversion rail 5.

As shown in fig. 4, in this embodiment, the reaction cup is located in the middle rail 3, when the reaction cup moves to the conversion rail 5, one end of the curved bar 10 is located at one side of the reaction cup away from the conversion rail 5, the cup blocking plate 9 is located in the conversion rail 5, when the reaction cup needs to be switched from the middle rail 3 to the outer rail 4, the power device drives the cup blocking plate 9 to move away from the conversion rail 5, the cup blocking plate 9 drives one end of the curved bar 10 to move, the other end of the curved bar also follows the movement under the hinged action, the reaction cup is pushed from the middle rail 3 to the outer rail 4, and the switching of the reaction cup is completed. The whole structure forms an airtight space through the fixed shell 8, so that the luminous reading of an instrument is prevented from being influenced, the whole size is small, the structure is stable, the whole structure can be assembled in advance during installation, the whole structure is directly installed in a required position when needed, and the operation is convenient.

In this embodiment, as shown in fig. 2, 3 and 6, a limiting plate 11 is further disposed on the cup blocking plate 9, one end of the curved rod 10 is located between the limiting plate 11 and the cup blocking plate 9, and the middle portion of the curved rod 10 is hinged to the fixed shell 8 through a rotating shaft 12. In this embodiment, cup blocking plate 9 sets up in conversion track 5 top along the direction setting that is on a parallel with the reaction cup for block the reaction cup, cup blocking plate 9 with connect through mounting panel 13 between the limiting plate 11, cup blocking plate 9 sets up the one end that is close to conversion track 5 at mounting panel 13, limiting plate 11 sets up the other end at mounting panel 13. Limiting plate 11 and mounting panel 13 all set up along the horizontal direction, the one end and the mounting panel 13 fixed connection of limiting plate 11, form spacing groove 14 between the other end and the mounting panel 13, the one end that curved bar 10 and fender cup board 9 are connected is located spacing groove 14, in this embodiment, keep off cup board 9 and mounting panel 13 and set up as an organic whole, pass through bolt fixed connection between mounting panel 13 and the limiting plate 11, during power device drive keeps off the motion of cup board 9, mounting

panel

13 and 11 follow and move together, spacing groove 14's position also follows the motion, thereby drive curved bar 10 and rotate, the one end that makes curved bar 10 keep away from spacing groove 14 promotes the reaction cup motion.

In this embodiment, as shown in fig. 6 to 7, the curved rod 10 includes a shift lever 15 and a connecting rod 16, one end of the shift lever 15 is fixedly connected to one end of the connecting rod 16, the rotating shaft 12 is disposed at a joint of the shift lever 15 and the connecting rod 16, the rotating shaft 12 is connected to the curved rod 10 through a flange bearing 17, so that rolling friction exists between the rotating shaft 12 and the curved rod 10, two ends of the rotating shaft 12 are connected to the fixing housing 8, one end of the shift lever 15 away from the rotating shaft 12 is located at one end of the converting track 5, in this embodiment, one end of the shift lever 15 away from the rotating shaft 12 is located on an extension line of the converting track 5, specifically located between the inner track 2 and the middle track 3, and the cup blocking plate 9 is located in the converting track 5. The connecting rod 16 is straight, the deflector rod 15 is bent at one end close to the conversion track 5, and the heights of the two ends of the curved rod 10 are lower than that of the middle part. As shown in fig. 7, the shift lever 15 is bent away from the transfer rail 5, and the width of the end of the shift lever 15 away from the rotating shaft 12 is greater than that of the other parts, so that the contact area between the shift lever 15 and the reaction cup is larger, and the movement of the reaction cup is more stable. And the one end that driving lever 15 and reaction cup contacted is for the slope setting in the one side that is close to the reaction cup, and the inclined plane is for the direction slope of keeping away from the reaction cup from top to bottom, when curved bar 10 rotated, the one end that driving lever 15 is close to the reaction cup removed and rotated towards the reaction cup direction gradually, the inclined plane tends to vertically gradually along with the motion of driving lever 15, when contacting with the reaction cup at last, the inclined plane is in vertical state, driving lever 15 continues the motion, promote the reaction cup and slide along conversion track 5, thereby push away the reaction cup from middle track 3 along conversion track 5 outside track 4.

As shown in fig. 6-7, the height of the portion of the connecting rod 16 located between the limiting plate 11 and the cup retaining plate 9 is H1, the distance between the limiting plate 11 and the cup retaining plate 9 is H2, that is, the height of the limiting groove 14 is H2, and H2 > H1, that is, the height of the limiting groove 14 is greater than the height of the portion of the connecting rod 16 located in the limiting groove 14. So that the connecting rod 16 can be mounted in the limit groove 14. In this embodiment, two parallel connecting rods 16 are provided, a sliding groove is provided between the two connecting rods 16, one ends of the two connecting rods 16 far away from the rotating shaft 12 are connected through a hinge pin 18, a bearing 19 is sleeved on a portion of the hinge pin 18 located between the two connecting rods 16, and the height of the bearing 19 is H3, H2 > H3 > H1. When the limit groove 14 drives the curved bar 10 to rotate, the curved bar contacts with the bearing 19 to push the bearing 19 to move, the bearing 19 drives the connecting rod 16 to rotate along the rotating shaft 12, and in the movement, the bearing 19, the hinge pin 18 and the limit groove 14 are all rolling friction, so that the friction force can be reduced.

In this embodiment, as shown in fig. 2 to 5, the power device is a motor 20, a screw rod 21 is disposed in the fixing housing 8, and a nut 22 matched with the screw rod 21 is fixedly disposed on the mounting plate 13. A guide shaft 23 parallel to the screw rod 21 is further arranged in the fixed shell 8, and the guide shaft 23 is connected with the mounting plate 13 through a linear bearing. The motor 20 drives the screw rod 21 to rotate, the nut 22 converts the rotation of the screw rod 21 into movement, and drives the mounting plate 13 to move along the length direction of the screw rod 21, in the embodiment, the motor 20 is a stepping motor 20, a driving force is provided by one motor 20 to complete the processes of rotary pushing and vertical two-time-delay synchronous movement, vertical positioning and guiding are realized through the combination of two groups of guide shafts 23 and linear bearings in the vertical movement, the deflector rod is bent in the curved rod 10, so that the time-delay synchronous action of pushing the reaction cup and the cup baffle plate 9 is achieved, when the reaction cup is pushed at the bottom to move, the angle of the deflector rod pushing the reaction cup is designed, surface contact is achieved when the reaction cup reaches a fixed position, the purpose of stabilizing the reaction cup is achieved, the shaking is prevented, and the whole structure tends to be more stable.

As shown in fig. 2-4, the position is the initial position, the bracket 7 rotates on the housing 1, the reaction cup is mounted on the bracket 7, and moves on the middle rail 3 of the housing 1, when the reaction cup moves to the rail change position, i.e. the rail change 5, if the reaction cup does not need to change the rail, the structure does not move and only the cup blocking plate 9 acts, and the reaction cup is blocked to prevent the reaction cup from moving to the rail change 5 and being blocked, if the reaction cup needs to change the rail to the outer rail 4, the structure operates, firstly, the motor 20 drives the screw rod 21 to rotate, drives the cup blocking plate 9 and the limit plate 11 fixed to the cup blocking plate 9 to move upwards through the screw rod 21 and the nut 22, the limit is performed through two sets of guide shafts 23 and the linear bearing during the upward movement, so as to prevent the offset, the limit plate 11 pushes the bearing to move upwards during the movement, the bearing has a clearance in the limit groove 14 both up and down, the purpose of first lifting the cup blocking plate 9 and then moving the curved rod 10 is achieved, the bearing is fixed between the two connecting rods 16, the bearing drives the curved rod 10 to move around the rotating shaft 12 during the movement, and drives the entire flange to move back to the bottom of the flange to the reaction cup to move back to the bottom of the housing 1, and the bottom of the reaction cup to the flange to move back to the bottom after the movement is completed, and the reaction cup is completed in the reaction cup moving process, and the reaction cup is completed when the reaction cup is completed in the movement, the bottom of the flange is completed in the bottom of the flange, the flange is completed in the flange, the reaction cup.

In this embodiment, as shown in fig. 2 to fig. 3, a photoelectric sensor 24 is further fixedly disposed in the fixing casing 8, and a photoelectric blocking piece 25 matched with the photoelectric sensor 24 is fixedly disposed on the mounting plate 13.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A reaction cup switching mechanism is characterized in that: the novel anti-vibration switch comprises a housin, be provided with the conversion track on the casing, conversion track top is provided with the set casing, be provided with cup blocking plate and curved bar in the set casing, the curved bar is articulated with the set casing, the one end of curved bar is located the orbital one end of conversion, the other end with cup blocking plate connects, cup blocking plate is connected with its power device who is close to or keeps away from the conversion track, when cup blocking plate is close to or keeps away from the conversion orbiting, cup blocking plate promotes the curved bar slides along the conversion track, still be provided with the limiting plate on the cup blocking plate, the one end of curved bar is located between limiting plate and the cup blocking plate, the mid portion of curved bar is articulated with the set casing through the rotation axis, cup blocking plate with be connected through the mounting panel between the limiting plate, cup blocking plate sets up the orbital one end of conversion that is close to the mounting panel, the limiting plate sets up the other end at the mounting panel, cup blocking plate sets up in the conversion track top, limiting plate and mounting panel all set up along the horizontal direction, the one end and the mounting panel fixed connection of limiting plate form the spacing groove between the other end of limiting plate and the mounting panel, the one end that the cup blocking plate is connected is located the limiting groove.

2. The cuvette switching mechanism according to claim 1, wherein: the bent rod comprises a shifting rod and a connecting rod, one end of the shifting rod is fixedly connected with one end of the connecting rod, the rotating shaft is arranged at the joint of the shifting rod and the connecting rod, one end, far away from the rotating shaft, of the shifting rod is located at one end of the conversion track, and the cup blocking plate is located above the conversion track.

3. The cuvette switching mechanism according to claim 2, wherein: the connecting rod is straight, the deflector rod is bent at one end close to the conversion track, and the heights of the two ends of the bent rod are lower than that of the middle part.

4. A reaction cup switching mechanism according to claim 3, wherein: the height of the part, located between the limiting plate and the cup blocking plate, of the connecting rod is H1, the distance between the limiting plate and the cup blocking plate is H2, and H2 is larger than H1.

5. The cuvette switching mechanism according to claim 4, wherein: the connecting rods are parallel to each other, a sliding groove is formed between the two connecting rods, one ends, far away from the rotating shaft, of the two connecting rods are connected through hinge pins, bearings are sleeved on the portions, located between the two connecting rods, of the hinge pins, the heights of the bearings are H3, and H2 is greater than H3 and greater than H1.

6. A cuvette switching mechanism according to any one of claims 1 to 5, wherein: the power device is a motor, a screw rod is arranged in the fixed shell, and a nut matched with the screw rod is fixedly arranged on the mounting plate.

7. The cuvette switching mechanism according to claim 6, wherein: and a guide shaft parallel to the screw rod is further arranged in the fixed shell, and the guide shaft is connected with the mounting plate through a linear bearing.