CN220835691U - Test tube rack advancing mechanism and sample analyzer - Google Patents

Abstract

The embodiment of the utility model discloses a test tube rack propelling mechanism and a sample analyzer, wherein the test tube rack propelling mechanism comprises a rack, a driving motor, a swinging rod and a push plate, a working surface is arranged on the rack, the working surface is used for placing a test tube support, the push plate comprises an abutting plate body which is arranged opposite to the test tube support and a sliding plate body which is connected with the abutting plate body, the sliding plate body is arranged on the rack in a sliding manner, the swinging rod comprises an installing end and a free end which are arranged opposite, the free end is movably connected with the sliding plate body, a driving shaft of the driving motor is connected with the installing end and is used for driving the swinging rod to swing, the swinging rod can drive the push plate to move, so that the abutting plate body pushes the test tube support to move, the pressure is divided by the contact area by the pressure, when the pressure is constant, the contact area is larger, the contact area between the swinging rod and the test tube support is increased by the contact area of the test tube support through the arrangement of the abutting plate body, and the test tube support can be more stable in the movement process and the test tube support is not easy to topple.

Description

Test tube rack advancing mechanism and sample analyzer

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a test tube rack propelling mechanism and a sample analyzer.

Background

The blood cell analyzer, the specific protein analyzer and the urine analyzer all comprise a test tube rack propelling mechanism, and the test tube rack propelling mechanism is used for propelling the test tube rack to a designated position.

The existing test tube rack propelling mechanism comprises a motor and a single swing rod, the single swing rod is driven to swing through the motor so as to drive the test tube rack to move, and in the process, the test tube rack is stressed at a single point, so that the test tube rack is unstable and easy to topple in the moving process.

Disclosure of utility model

The utility model aims to provide a test tube rack propelling mechanism and a sample analyzer, and aims to solve the technical problems that in the prior art, a single swing rod is driven to swing by a motor so as to drive a test tube rack to move, and in the process, the test tube rack is stressed at a single point, so that the test tube rack is unstable and easy to topple in the moving process.

In a first aspect, the utility model provides a test tube rack propelling mechanism, which comprises a rack, a driving motor, a swinging rod and a push plate, wherein a working surface is arranged on the rack, the working surface is used for placing a test tube holder, the push plate comprises an abutting plate body arranged opposite to the test tube holder and a sliding plate body connected with the abutting plate body, the sliding plate body is slidingly arranged on the rack, the swinging rod comprises an installation end and a free end which are arranged opposite to each other, the free end is movably connected with the sliding plate body, a driving shaft of the driving motor is connected with the installation end and is used for driving the swinging rod to swing, and the swinging rod can drive the push plate to move, so that the abutting plate body pushes the test tube holder to move.

Preferably, the abutting plate body is provided with an abutting surface for abutting against the test tube support, the abutting surface extends along a first direction, and the first direction is parallel to the length direction of the test tube support.

Preferably, the sliding plate body is provided with a first limit protrusion and a second limit protrusion which are oppositely arranged, and the free end is arranged between the first limit protrusion and the second limit protrusion;

The swing rod can enable the free end to push the first limiting protrusion to drive the push plate to move towards the test tube support, and the swing rod can enable the free end to push the second limiting protrusion to drive the push plate to be far away from the test tube support and reset to an initial position.

Preferably, the first limiting protrusion and the second limiting protrusion each comprise a bearing and a fixed shaft, each fixed shaft is mounted on the sliding plate body, and each bearing is sleeved on each fixed shaft in a one-to-one correspondence manner.

Preferably, the test tube rack propelling mechanism further comprises a rail assembly, the sliding plate body is in sliding connection with the rack through the rail assembly, the rail assembly extends along a second direction, and the first direction and the second direction are arranged at an included angle.

Preferably, the track assembly comprises a sliding rail and a sliding block, wherein the sliding rail is installed on the frame and extends along the second direction, and the sliding block is installed on the sliding plate body and is in sliding connection with the sliding rail.

Preferably, the test tube rack propelling mechanism further comprises a position detection assembly, wherein the position detection assembly is arranged on the rack and used for detecting the position of the swing rod.

Preferably, the position detecting assembly comprises a sensor and an induction piece, the induction piece is arranged on a driving shaft of the driving motor, the sensor is arranged on the frame, and the position of the swing rod can be sensed by sensing the position of the induction piece.

Preferably, the test tube rack propelling mechanism further comprises a limiting assembly, the limiting assembly comprises a first limiting part and a second limiting part, and the first limiting part and the second limiting part are oppositely arranged on the rack and used for limiting the movement stroke of the sliding plate body.

In a second aspect, the present utility model further provides a sample analyzer, where the sample analyzer includes a test tube rack and the rack pushing mechanism according to any one of the above embodiments, and the rack pushing mechanism is configured to push the test tube rack to move.

The embodiment of the utility model has the following beneficial effects:

By adopting the test tube rack propelling mechanism and the sample analyzer, the driving motor drives the swinging rod to swing, so that the free end of the swinging rod drives the pushing plate to move, the abutting plate body abuts against the test tube support to move, the pressure is equal to the pressure divided by the contact area, when the pressure is constant, the contact area is larger and smaller, the contact area between the swinging rod and the test tube support is increased by arranging the abutting plate body, the test tube support is more stable in the moving process and is less prone to toppling, and the working reliability and stability of the sample analyzer are ensured.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Wherein:

FIG. 1 is a schematic diagram of a sample analyzer in one embodiment.

Fig. 2 is a schematic view of the test tube rack advancing mechanism of the sample analyzer of fig. 1 in a first state.

Fig. 3 is a schematic view of the test tube rack advancing mechanism of the sample analyzer of fig. 1 in a second state.

Fig. 4 is an enlarged schematic view of a portion a in fig. 1.

Reference numerals: 10. a test tube holder; 11. a sliding protrusion; 100. a frame; 110. a chute; 200. a driving motor; 300. swing rod; 310. a mounting end; 320. a free end; 400. a push plate; 410. abutting the plate body; 411. an abutment surface; 420. a sliding plate body; 510. the first limiting protrusion; 520. the second limiting bulge; 521. a bearing; 522. a fixed shaft; 600. a track assembly; 610. a slide rail; 620. a slide block; 700. a position detection assembly; 710. a sensor; 720. an induction piece; 800. a limit component; 810. a first limiting member; 820. a second limiting piece; 900. a rotating seat.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are correspondingly changed.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The embodiment of the utility model provides a test tube rack propelling mechanism and a sample analyzer, wherein the test tube rack propelling mechanism is mainly used for propelling a test tube rack to stably move.

Referring to fig. 1 to 4, the test tube rack pushing mechanism of an embodiment includes a rack 100, a driving motor 200, a swing rod 300 and a push plate 400, wherein a working surface is disposed on the rack 100, the working surface is used for placing a test tube rack 10, the push plate 400 includes an abutting plate 410 opposite to the test tube rack 10, and a sliding plate 420 connected to the abutting plate 410, the sliding plate 420 is slidably disposed on the rack 100, the swing rod 300 includes an installation end 310 and a free end 320 opposite to each other, the free end 320 is movably connected to the sliding plate 420, a driving shaft of the driving motor 200 is connected to the installation end 310 and is used for driving the swing rod 300 to swing, and the swing rod 300 can drive the push plate 400 to move, so that the abutting plate 410 pushes the test tube rack 10 to move.

It can be appreciated that the driving motor 200 drives the swing rod 300 to swing, so that the free end 320 of the swing rod 300 drives the push plate 400 to move, so that the abutting plate body 410 abuts against the test tube holder 10 to move, and the pressure is equal to the pressure divided by the contact area, so that when the pressure is constant, the greater the contact area is, the smaller the contact area is, the greater the contact area is between the swing rod 300 and the test tube holder 10 is, the more stable the test tube holder 10 is in the movement process, the less easy to topple, and the working reliability and stability of the sample analyzer are ensured.

In the prior art, the test tube support 10 is pushed to move by adopting the double-wheel direct-connected swing rod, and the device ensures that the two swing rods synchronously push the test tube support 10 to move, so that the device is difficult to install and position and has higher requirement on installation precision, and only one abutting plate body 410 is used for abutting against the test tube support 10 to move, so that the device is easy and convenient to install and position and has smaller space occupation ratio.

In an embodiment, referring to fig. 1 to 3, an abutting plate 410 is provided with an abutting surface 411 for abutting against a test tube holder 10, the abutting surface 411 extends along a first direction, the first direction is parallel to a length direction of the test tube holder 10, the first direction is a direction X shown in fig. 1, a swing rod 300 in the prior art is in point contact with the test tube holder 10, and the swing rod 300 in the application realizes surface contact with the test tube holder 10 through a push plate 400, so that the push rod can more stably push the test tube holder 10 to move by increasing a contact area.

In an embodiment, the sliding plate body 420 is provided with a first limiting protrusion 510 and a second limiting protrusion 520 which are oppositely arranged, the free end 320 is arranged between the first limiting protrusion 510 and the second limiting protrusion 520, the swing rod 300 swings to enable the free end 320 to push the first limiting protrusion 510 to drive the push plate 400 to move towards the test tube holder 10 so as to push a test tube holder 10 to a designated position, the swing rod 300 swings to enable the free end 320 to push the second limiting protrusion 520 to drive the push plate 400 to be far away from the test tube holder 10 and reset to an initial position, periodic operation of the push plate 400 is facilitated, and the driving motor 200 is a power source of the whole test tube rack pushing mechanism and is used for driving the swing rod 300 to drive the push plate 400 to reciprocate.

The first state is a state that the free end 320 pushes the first limiting protrusion 510 to drive the push plate 400 to move, and the second state is a state that the free end 320 pushes the second limiting protrusion 520 to drive the push plate 400 to move, and the driving motor 200 drives the swing rod 300 to swing in the positive and negative directions, so that the test tube rack pushing mechanism is switched between the first state and the second state.

Further, the first and second limiting protrusions 510 and 520 each include a bearing 521 and a fixed shaft 522, each fixed shaft 522 is mounted on the sliding plate body 420, each bearing 521 is sleeved on each fixed shaft 522 in a uniform and corresponding manner, and the arrangement of the bearings 521 is used for connection and power transmission between the swing rod 300 and the push plate 400, and reducing friction and noise between interactions.

In the process that the free end 320 of the swing rod 300 pushes the bearing 521 to drive the push plate 400 to move, the free end 320 can move relatively to the bearing 521, and according to the law of conservation of energy, it is known that energy generated by driving the swing rod 300 to swing by the driving motor 200 is equal to work generated by friction force between the free end 320 and the bearing 521, and useful work generated by friction force between the sliding plate body 420 and the frame 100 and work generated by forward or backward movement of the push plate 400, and the arrangement of the bearing 521 can reduce work generated by friction force between the free end 320 and the bearing 521, so that work generated by friction force between the swing rod 300 and the push plate 400 can be reduced, useful work generated by forward or backward movement of the push plate 400 can be improved, and energy conversion is facilitated.

In another embodiment, the sliding plate 420 is provided with an abutment groove, the free end 320 is disposed in the abutment groove, the swing rod 300 swings to enable the free end 320 to push a groove wall of the abutment groove to drive the push plate 400 to move towards the test tube holder 10, and the swing rod 300 swings to enable the free end 320 to push another groove wall of the abutment groove to drive the push plate 400 to be away from the test tube holder 10 and reset to an initial position, so that periodic operation of the push plate 400 is facilitated.

In an embodiment, referring to fig. 1 to 3, the rack pushing mechanism further includes a rail assembly 600, the sliding plate 420 is slidably connected to the rack 100 through the rail assembly 600, the rail assembly 600 extends along a second direction, and the first direction and the second direction form an included angle. Further, the first direction is perpendicular to the second direction, the first direction is the direction of X shown in fig. 1, and the second direction is the direction of Y shown in fig. 1, and by providing the track assembly 600, the friction force between the sliding plate 420 and the frame 100 can be reduced, and the energy consumption of the sliding plate 420 can be reduced.

Further, the track assembly 600 includes a sliding rail 610 and a sliding block 620, the sliding rail 610 is mounted on the rack 100 and extends along the second direction, the sliding rail 610 is connected with the rack 100 through a screw, the sliding block 620 is mounted on the sliding plate 420 and is slidably connected with the sliding rail 610, the swing rod 300 swings to enable the free end 320 to push the limiting protrusion to drive the sliding plate 420 to move, and the sliding plate 420 moves to drive the sliding block 620 to slide on the sliding rail 610 along the straight line of the second direction, so that the movement of pushing the test tube stand 10 by the abutting plate 410 and the reset movement of the abutting plate 410 are realized.

In an embodiment, the test tube rack pushing mechanism further includes a position detecting assembly 700, where the position detecting assembly 700 is disposed on the rack 100 and is used for detecting the position of the swing rod 300, and determining whether the push plate 400 is reset to the initial position by detecting the position of the swing rod 300.

Further, the position detecting assembly 700 includes a sensor 710 and a sensing piece 720, the sensing piece 720 is disposed on the driving shaft of the driving motor 200, the sensing piece 720 is a zero position detecting plate, the sensor 710 is mounted on the frame 100, and by sensing the position of the sensing piece 720, the position of the swing rod 300 can be sensed, and by detecting the position of the swing rod 300, whether the push plate 400 is reset to the initial position (zero position) is determined.

In an embodiment, referring to fig. 1 to 3, the test tube rack pushing mechanism further includes a rotating seat 900, the rotating seat 900 is disposed on the driving shaft of the driving motor 200, the sensing piece 720 and the mounting end 310 of the swing rod 300 are both mounted on the rotating seat 900, the driving motor 200 drives the rotating seat 900 to rotate, and the rotating seat 900 rotates to drive the push plate 400 to move, so that the abutting plate 410 pushes the test tube rack 10 to move along the second direction, and the rotating seat 900 rotates to drive the sensing piece 720 to leave or enter the sensing area of the sensor 710, so as to realize the detection of the position of the swing rod 300.

In an embodiment, the test tube rack pushing mechanism further includes a limiting component 800, where the limiting component 800 includes a first limiting component 810 and a second limiting component 820, the first limiting component 810 and the second limiting component 820 are screws and are disposed on the rack 100 relatively, and are used for limiting a movement stroke of the sliding plate body 420, the first limiting component 810 is used for limiting a forward stroke of the sliding plate body 420, and the second limiting component 820 is used for limiting a backward stroke of the sliding plate body 420, so that the sliding plate body 420 is prevented from driving the sliding block 620 to slide out from the sliding rail 610.

Referring to fig. 1 to 4, a sample analyzer according to an embodiment includes a test tube holder 10 and a rack pushing mechanism according to any of the above embodiments, where the rack pushing mechanism is used to push the test tube holder 10 to move, and the sample analyzer may be a blood cell analyzer, a specific protein analyzer, a urine analyzer, or the like.

It can be appreciated that the driving motor 200 drives the swing rod 300 to swing, so that the free end 320 of the swing rod 300 drives the push plate 400 to move, so that the abutting plate body 410 abuts against the test tube holder 10 to move, and the pressure is equal to the pressure divided by the contact area, so that when the pressure is constant, the greater the contact area is, the smaller the contact area is, the greater the contact area is between the swing rod 300 and the test tube holder 10 is, the more stable the test tube holder 10 is in the movement process, the less easy to topple, and the working reliability and stability of the sample analyzer are ensured.

In an embodiment, a sliding groove 110 is formed in the rack 100, a sliding protrusion 11 is formed on the test tube holder 10, the sliding protrusion 11 is slidably disposed in the sliding groove 110, the driving motor 200 drives the swing rod 300 to swing, so that the swing rod 300 drives the push plate 400 to move, and the abutting plate body 410 pushes the test tube holder 10 to move, so that the sliding protrusion 11 can slide in the sliding groove 110, and stable parallel movement of the test tube holder 10 is ensured.

The foregoing disclosure is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.

Claims (10)

1. The test tube rack propelling mechanism is characterized by comprising a frame, a driving motor, a swinging rod and a pushing plate, wherein a working surface is arranged on the frame and used for placing a test tube support, the pushing plate comprises an abutting plate body which is arranged opposite to the test tube support and a sliding plate body which is connected with the abutting plate body, the sliding plate body is slidingly arranged on the frame, the swinging rod comprises an installation end and a free end which are arranged opposite to each other, the free end is movably connected with the sliding plate body, a driving shaft of the driving motor is connected with the installation end and used for driving the swinging rod to swing, and the swinging rod can drive the pushing plate to move, so that the abutting plate body pushes the test tube support to move.

2. The rack advancing mechanism according to claim 1, wherein the abutment plate body is provided with an abutment surface for abutment with the test tube holder, the abutment surface extending in a first direction, the first direction being parallel to a length direction of the test tube holder.

3. The test tube rack propelling mechanism according to claim 2, wherein the sliding plate body is provided with a first limiting protrusion and a second limiting protrusion which are arranged oppositely, and the free end is arranged between the first limiting protrusion and the second limiting protrusion;

The swing rod can enable the free end to push the first limiting protrusion to drive the push plate to move towards the test tube support, and the swing rod can enable the free end to push the second limiting protrusion to drive the push plate to be far away from the test tube support and reset to an initial position.

4. The test tube rack propelling mechanism according to claim 3, wherein the first limiting protrusion and the second limiting protrusion comprise bearings and fixed shafts, each fixed shaft is mounted on the sliding plate body, and each bearing is sleeved on each fixed shaft in a one-to-one correspondence manner.

5. The rack propulsion mechanism of claim 2, further comprising a rail assembly, wherein the sliding plate is slidably connected to the rack via the rail assembly, wherein the rail assembly extends in a second direction, and wherein the first direction is disposed at an angle to the second direction.

6. The rack propulsion mechanism according to claim 5, wherein the rail assembly comprises a rail and a slider, the rail is mounted on the rack and extends in the second direction, and the slider is mounted on the sliding plate and is slidably connected to the rail.

7. The rack propulsion mechanism of claim 2, further comprising a position detection assembly disposed on the frame and configured to detect a position of the swing link.

8. The rack propulsion mechanism according to claim 7, wherein the position detection assembly comprises a sensor and a sensing piece, the sensing piece is arranged on a driving shaft of the driving motor, and the sensor is mounted on the rack and is capable of sensing the position of the swing rod by sensing the position of the sensing piece.

9. The rack propulsion mechanism of claim 2, further comprising a limit assembly, the limit assembly comprising a first limit and a second limit, the first limit and the second limit being disposed opposite to each other on the frame and configured to limit a movement stroke of the sliding plate.

10. A sample analyzer comprising a test tube holder and the rack advancing mechanism of any one of claims 1-9 for pushing the test tube holder into movement.