WO2021121152A1

WO2021121152A1 - Locking mechanism for reagent plate

Info

Publication number: WO2021121152A1
Application number: PCT/CN2020/135700
Authority: WO
Inventors: 郝书顺
Original assignee: 石家庄禾柏生物技术股份有限公司
Priority date: 2019-12-19
Filing date: 2020-12-11
Publication date: 2021-06-24
Also published as: CN111308109A

Abstract

A locking mechanism for a reagent plate (5), comprising a tray (3) used for holding the reagent plate (5), an engaging bar (9) provided on an inner sidewall of a positioning hole of the reagent plate (5), a jaw (8) provided within the tray (3) and used for engagedly connecting with the engaging bar (9), and a driving apparatus used for driving the jaw (8) to yaw so as to implement the mating and separation of the jaw (8) and the engaging bar (9). With the mating of the jaw (8) mounted within the tray (3) and the engaging bar (9) on the reagent plate (5), and the yaw of the jaw (8) implemented under the effect of the driving apparatus, implemented are the locking by clamping and releasing of the reagent plate (5), the driving apparatus is electronically controllable, and automated operation is implemented.

Description

Reagent plate locking mechanism

Technical field

The invention relates to a reagent disk locking mechanism.

Background technique

In body fluid testing and diagnosis, it is necessary to collect human body fluids and then perform targeted item testing. In most cases, one tube of body fluid needs to be collected for each item tested. When multiple tests are required, multiple tubes of body fluid need to be collected. The collection process It takes more time. At present, there is a reagent disk, which can quantify, separate, and transport the body fluid dropped on the disk by centrifugal force, and can realize the function of collecting multiple detections at a time. For this kind of reagent disk, a drive device is required. To drive it to rotate.

During the rotation, a locking mechanism is required to lock the reagent tray to prevent the reagent tray from falling off during rotation. Although there are related structures for fixing the disc-shaped object on the rotating seat, this structure is a fixed locking structure, which cannot realize automatic locking and loosening, which is not conducive to fast and efficient work.

technical problem

The technical problem to be solved by the present invention is to provide a reagent disk locking mechanism, which can realize automatic locking of the reagent disk without manual operation.

Technical solutions

The technical solution adopted by the present invention is: a reagent disk locking mechanism, which includes a bracket for holding the reagent disk, a clip provided on the inner side wall of the positioning hole of the reagent disk, and the inner side of the bracket. The clamping jaws for clamping the clamping bar and a driving device for driving the clamping jaws to deflect to realize the cooperation and separation of the clamping jaws and the clamping bars.

Further, a clamping slot for placing the clamping jaws is provided inside the bracket, the bottom of the clamping jaws is arranged in the clamping slot, and the claw hooks on the top extend out of the upper surface of the bracket for mating with the clamping strips.

Further, the driving device includes a pallet located below the bracket, a top block arranged on the top of the pallet for contact with the clamping jaw to deflect the clamping jaw, and a lifting structure for enabling the pallet to move up and down.

Further, the lifting structure includes a spring for raising the pallet and a pressing device for lowering the pallet.

Further, the pressing device includes a moving plate arranged on the mounting plate to move, a pressing plate arranged on the moving plate for contacting with the supporting plate to move the supporting plate downward, and a traverse device for driving the moving plate to move.

Further, the side surface corresponding to the pressing plate and the supporting plate is an inclined surface, and the inclined surface gradually slopes from top to bottom to the side close to the moving plate; and/or the outer side wall of the supporting plate is an inclined surface, and the inclination direction gradually increases from top to bottom. Tilt outside.

Further, the pressing device includes a movable plate arranged on the mounting seat through a rotating shaft and a deflection driving device for deflecting the movable plate, and the other end of the movable plate is used to contact the pallet to move the pallet down. .

Further, the side surface of the movable plate corresponding to the pallet is an inclined surface, and the inclined surface is gradually inclined from top to bottom to the side away from the pallet; and/or the outer side wall of the pallet is an inclined surface, and the inclination direction is from top to bottom Gradually tilt outward.

Further, the traverse device includes a screw rod which is rotatably arranged on the mounting plate and a screw nut fixed on the moving plate and matched with the screw rod.

Further, the clamping claw includes a claw hook and a horizontal plate arranged below the claw hook, the right side end of the horizontal plate is rotatably connected with the bracket, and the left side end is in contact with the driving device.

Beneficial effect

The positive effect of the present invention is: the present invention realizes the deflection of the clamping jaws under the action of the driving device through the cooperation of the clamping jaws installed in the bracket and the clamping strips on the reagent tray, and realizes clamping and locking of the reagent tray. When released, the drive device can be controlled electronically to realize automatic operation.

Description of the drawings

Figure 1 is a schematic diagram of the structure of the present invention.

Figure 2 is a schematic diagram of the structure of the driving device of the present invention.

Fig. 3 is a schematic diagram of the structure of the clamping jaw of the present invention.

Figure 4 is a schematic diagram of the structure of the reagent tray of the present invention.

Fig. 5 is an enlarged view of part A in Fig. 4 of the present invention.

Embodiments of the present invention

As shown in Figures 1-5, the present invention includes a drive motor 2 fixed on the mounting plate 1, a bracket 3 sleeved on the output shaft of the drive motor 2, and fixed on the output shaft of the drive motor 2 and located on the bracket 3. The upper positioning shaft 4, the reagent tray 5 arranged on the positioning shaft 4, the clamping strip 9 arranged on the inner side wall of the positioning hole of the reagent tray 5, and the clamping jaw 8 arranged in the bracket 3 to be clamped with the clamping strip 9 And a driving device for driving the clamping jaws 8 to deflect to realize the cooperation and separation of the clamping jaws 8 and the clamping strip 9, and the reagent disc 5 and the positioning shaft 4 cooperate with each other.

A clamping slot for placing the clamping jaw 8 is provided inside the bracket 3, the bottom of the clamping jaw 8 is arranged in the clamping slot, and the top claw hook 801 extends out of the upper surface of the bracket 3 for mating with the clamping strip 9.

The clamping claw 8 includes a claw hook 801 and a horizontal plate 802 arranged under the claw hook 801. The right end of the horizontal plate 802 is rotatably connected with the bracket 3, and a baffle plate is also provided below the position of the rotation connection to prevent the horizontal plate The right end of 802 falls, and its left end is in contact with the driving device. When the driving device is at a high position, push the left end of the horizontal plate 802 to move upward, so that the claw hook 801 is deflected outward, and the end of the claw hook 801 is located at The upper part of the card strip 9 prevents the reagent tray 5 from being pulled out. When the driving device is at a low position, the clamping jaw 8 loses its supporting force, and it deflects inward under the weight of the clamping jaw 8 to make the claw hook 801 let the clamping bar 9 rise to release the reagent tray 5.

The driving device includes a pallet 10 arranged under the bracket 3, a spring 18 arranged between the motor 2 and the pallet 10, and a pressing device for pressing down the pallet 10, and the spring 18 and the pressing device are used to form It is a lifting structure that enables the pallet 10 to move up and down. The pallet 10 is provided with a top block contacting the horizontal plate 802. In the state where the pressing device is not working, the spring 18 pushes the pallet 10 in a high position, and the spring 18 can also be set between the pallet 10 and the mounting plate 1. As long as the lifting function of the pallet 10 can be realized. The pressing device includes a moving plate 11 arranged on one side of the pallet 10, a pressing plate 12 arranged on the moving plate 11 to contact the pallet 10 to press it down, and a traverse device for driving the moving plate 11 to move. . The traverse device includes a screw rod rotatably arranged on the mounting plate 1 and a screw nut fixed on the moving plate 11 and matched with the screw rod.

The side surface of the pressing plate 12 corresponding to the pallet 10 is a slope, and the slope gradually slopes from top to bottom to the side close to the moving plate 11; and/or the outer side wall of the pallet 10 is a slope, and the inclination direction is gradually from top to bottom Tilt outward. When the pallet 10 and the pressing plate 12 are gradually approaching, the pallet 10 is pressed downward.

As another embodiment of a pressing device, the pressing device includes a movable plate 14 arranged on the other side of the pallet 10 and also used for pressing the pallet 10 down, and a deflection drive for deflection of the movable plate 14 Device. The movable plate 14 is approximately L-shaped. One end of the movable plate 14 is used to contact the pallet 10, and the other end is connected with the driving device. The middle part of the movable plate 14 is set on the mounting plate 1 by rotating shafts; the movable plate 14 corresponds to the pallet 10 The side surface is a slope and the slope gradually slopes from top to bottom to the side away from the pallet 10, and/or the outer side wall of the pallet 10 is a slope, and the inclination direction gradually slopes outward from top to bottom. When the pallet 10 is gradually in contact, the pallet 10 is pressed downward.

Both embodiments of the pressing device can be used alone or simultaneously. When used at the same time, the movable plate 11 is provided with a contact rod 13 for contacting with the movable plate 14 as a deflection driving device for driving the movable plate 14 to deflect. When the movable plate 11 moves to the side close to the reagent tray, the contact rod 13 The other end of the movable plate 14 is pressed to make it deflect. By adjusting the length relationship between the contact rod 13 and the pressing plate 12 and the movable plate 14, the pressing plate 12 and the movable plate 14 can be moved downward to fix the pallet 10 at the same time, so that the pallet 10 can move downward more smoothly.

The present invention also includes a drive structure for the reagent disk 5, which includes a driving motor 2 fixed on the mounting plate 1, a positioning shaft 4 fixed on the output shaft of the driving motor 2, and a reagent disk 5 arranged on the positioning shaft 4. The reagent disk 5 and the positioning shaft 4 cooperate with each other. The bracket 3 is sleeved on the output shaft of the driving motor 2 and is located below the positioning shaft 4. The pallet 10 is also sleeved on the output shaft of the driving motor 2 and located below the bracket 3.

A number of protrusions 7 are uniformly arranged on the outer side wall of the positioning shaft 4, and between two adjacent protrusions 7 is a connecting groove 15 for mating with the reagent disk 5, and is provided on the inner side wall of the positioning hole of the reagent disk 5 There is a connecting block 6 corresponding to the connecting groove 15.

In order to facilitate the connection between the positioning hole on the reagent tray 5 and the positioning shaft 4, the outer side wall of the protrusion 7 gradually slopes toward the center of the positioning shaft 4 from bottom to top.

At the same time, the bottom surface of the connecting block 6 is designed to be approximately V-shaped, and the left and right side walls of the bump 7 gradually slope from bottom to top toward the middle of the bump 7, that is, it is also approximately in the form of an inverted V shape.

When installing the reagent plate 5 on the positioning shaft 4, without considering the positional relationship between the connecting groove 15 and the connecting block 6, only the positioning hole on the reagent plate 5 is placed on the positioning shaft 4, relying on the reagent plate 5 Own gravity, combined with the inclined outer side wall of the convex block 7, can realize that the axis of the reagent tray 5 coincides with the axis of the positioning axis 4, and it can be automatically adjusted even if it is slightly misaligned when placed. However, since there is a positive V-shaped or inverted V-shaped structure on one or both sides of the connecting block 6 and the bump 7, even if the connecting block 6 is not directly facing the connecting groove 15 during installation, it will be carried out through an inclined slope. auto-adjust. The connection between the reagent tray 5 and the positioning shaft 4 is simpler and easy to operate.

The top surface of the bracket 3 is in contact with the bottom surface of the protrusion 7 (that is, the bottom surface of the connecting groove 15) to prevent the reagent tray 5 from falling off from below the positioning shaft 4.

Driven by the motor, the reagent tray can be placed on the positioning shaft, and then the positioning shaft drives to achieve the function of rotation. The positioning shaft 4 is provided with a connecting groove 15 separated by bumps 7, and there is a connecting block 6 corresponding to the reagent plate 5. The connecting block 6 can be clamped in the connecting groove 15, and at the same time, the bump 7 is connected with The opposite side of the block 6 is provided with an inclined inclined surface. When the reagent disc is placed on the positioning shaft 4, there is no need to adjust the deflection angle of the reagent disc, and the connection groove and the connection block can be matched by relying on the gravity of the reagent disc. , It is simple and convenient to use.

The present invention can automatically realize the function of locking the reagent disk, and only needs to manually place the reagent disk on the positioning shaft, and without other manual operations, the connection and locking of the reagent disk 5 and the positioning shaft can be realized.

During the rotation detection process of the reagent disk 5, only the positioning hole of the reagent disk 5 needs to be placed on the positioning shaft 4. When the reagent disk 5 is misaligned with the positioning shaft 4, the reagent disk 5 can be automatically performed under the action of gravity. Adjust so that the two can be correctly matched, and then the reagent tray 5 is locked on the bracket 3 by the clamping jaw 8. The rotation adjustment and locking of the reagent tray 5 can be automatically completed without manual intervention, making it more convenient to use.

Claims

A reagent disk locking mechanism, characterized in that it comprises a bracket (3) for holding the reagent disk (5), a clip (9) arranged on the inner side wall of the positioning hole of the reagent disk (5), and The inside of the bracket (3) is used for clamping jaws (8) for clamping with the clamping strip (9) and a driving device for driving the clamping jaws (8) to deflection to realize the cooperation and separation of the clamping jaws (8) and the clamping strip (9) .
The reagent tray locking mechanism according to claim 1, characterized in that a clamping groove for placing the clamping jaws (8) is provided inside the bracket (3), and the bottom of the clamping jaws (8) is arranged in the clamping groove Inside, the top claw (801) extends out of the upper surface of the bracket (3) for mating with the clip (9).
The reagent tray locking mechanism according to claim 1 or 2, characterized in that the driving device comprises a pallet (10) located below the bracket (3), and is arranged on the top of the pallet (10) for A top block contacted with the clamping jaw (8) to deflect the clamping jaw (8) and a lifting structure for enabling the pallet (10) to move up and down.
The reagent plate locking mechanism according to claim 3, characterized in that the lifting structure includes a spring (18) for raising the pallet (10) and a downward pressure for lowering the pallet (10). Device.
The reagent disk locking mechanism according to claim 4, characterized in that the pressing device comprises a moving plate (11) which is movably arranged on the mounting plate (1), and is arranged on the moving plate (11) for A pressing plate (12) which is in contact with the pallet (10) to move the pallet (10) downward, and a traverse device for driving the moving plate (11) to move.
The reagent disk locking mechanism according to claim 5, characterized in that the side surface of the pressing plate (12) corresponding to the supporting plate (10) is an inclined surface, and the inclined surface gradually approaches the moving plate (11) from top to bottom. Tilt on one side; and/or

The outer side wall of the pallet (10) is an inclined surface, and the inclination direction of the pallet (10) gradually inclines outward from top to bottom.
The reagent disc locking mechanism according to claim 4, characterized in that the pressing device comprises a movable plate (14) arranged on the mounting seat (1) through a rotating shaft and a movable plate (14) for deflecting the movable plate (14). The other end of the movable plate (14) is used for contacting the pallet (10) to move the pallet (10) down.
The reagent disk locking mechanism according to claim 7, characterized in that the side surface of the movable plate (14) corresponding to the supporting plate (10) is an inclined surface, and the inclined surface gradually moves away from the supporting plate (10) from top to bottom. ) Is inclined on one side; and/or

The outer side wall of the pallet (10) is an inclined surface, and the inclination direction of the pallet (10) gradually inclines outward from top to bottom.
The reagent disk locking mechanism according to claim 5, characterized in that the traverse device comprises a screw rod which is rotatably arranged on the mounting plate (1) and fixed on the moving plate (11) and matched with the screw rod Screw nut.
The reagent plate locking mechanism according to claim 1, characterized in that the clamping jaws (8) comprise a claw hook (801) and a horizontal plate arranged under the claw hook (801), and the horizontal plate (802) The right end is rotatably connected with the bracket (3), and the left end is in contact with the driving device.