JPH0240537Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a washing device, and particularly to a washing device suitable for use in washing in enzyme immunoassay.

``Prior Art'' In general, in this type of cleaning device, a vacuum nozzle is placed above a slidable plate in which a large number of wells are arranged in rows and columns, and a vacuum nozzle is placed above the plate to suck and expel the cleaning liquid from the wells. First, the vacuum nozzle is lowered to suck and expel the liquid from the well, and then the plate is advanced by one well by the feeding mechanism, and then the cleaning liquid is emptied from the injection nozzle. I try to inject it into the well.

``Problem to be solved by the invention'' Conventionally, in cleaning equipment in which such operations were performed manually, the plate was in the forward position when the cleaning liquid had been injected into all wells. However, the plate has to be removed and re-set to the forward delivery position, and then the above operation is repeated, making it cumbersome to remove and reinstall the plate.

In order to solve these drawbacks, it has been proposed to provide a release mechanism for releasing the interlocking relationship between the plate and the feeding mechanism (for example, Japanese Utility Model Application Publication No. 77756/1983). In the case of such a device, it is not necessary to remove and reinstall the plate, but on the other hand, it is necessary to provide a drive system for the feeding mechanism to move the plate and a drive to raise and lower the head provided with the vacuum nozzle and the injection nozzle. Since the systems are separate, when performing cleaning work, two operations are required: one on the feed mechanism side and one on the lifting/lowering side of the head, which has the disadvantage that the cleaning work becomes complicated. Ta.

``Means for Solving the Problems'' In view of these drawbacks, the present invention includes a plate provided on the main body of the washing device so as to be slidable in the horizontal direction, and a plate provided on the main body of the washing device so as to be able to slide in the horizontal direction, and a vertical direction along the direction of movement of the plate. a plurality of wells arranged vertically and horizontally in a lateral direction orthogonal to the main body; a biasing means for returning the handle to the raised end position; a vacuum head that is movable up and down on a post erected at a predetermined position of the main body and that moves up and down in conjunction with the up and down movement of the handle; Vacuum nozzles are arranged in a line in the direction of the plate and are inserted into each well in the horizontal direction when the vacuum head is lowered to suck and expel the liquid in each well; A horizontal row of injection nozzles are arranged at intervals equal to the distance between the wells in the vertical direction, and as the handle moves up and down, cleaning liquid is sucked from the cleaning liquid tank and the sucked cleaning liquid is discharged to each of the injection nozzles. an injection cylinder to be supplied; a plurality of engaging portions provided on the plate at predetermined intervals along the direction of movement of the plate; a rotating shaft that moves in conjunction with the rotating shaft and is pivotally supported by the main body so as to be able to swing vertically, and is brought into contact with the handle from below by a biasing means, so that the handle is moved up and down. a lever that is raised and lowered along with the movement and reciprocates the rotary shaft in forward and reverse directions; and a lever that is provided on the rotary shaft and extends along the moving direction of the plate when the rotary shaft is reciprocated via the lever. a bracket that is swingably mounted on the bracket and that presses the engaging portion only when the bracket swings in the forward direction of the plate to adjust the distance between the wells in the vertical direction; By moving the lever to a position below the lowering end position of the handle, the rotating shaft is rotated more than the normal reciprocating rotation range, and The present invention provides a cleaning device characterized in that the engagement between the engagement claw and the engagement portion of the plate is forcibly released.

"Function" According to this configuration, by just one operation of reciprocating the handle up and down, the liquid in the front row of wells can be sucked and removed, the cleaning liquid can be supplied to the adjacent empty well, and the plate can be moved into the well. The cleaning work is extremely easy because the lever can be moved forward by one pitch, and by moving the lever to a position lower than the lower end position of the handle, the engagement between the engagement pawl and the plate side can be removed. By forcibly releasing the engagement with the joint, the plate can be returned to its original position without removing it.

Therefore, it is possible to provide a cleaning device whose cleaning operation is much simpler than in the past.

"Embodiments" The present invention will be described below with reference to illustrated embodiments. First, the general structure and operation will be explained based on the perspective view of FIG. They are slidably engaged. A plate stand 4a is removably placed at a predetermined position on the plate 4, and a large number of wells 5 are provided on the upper surface of the plate stand 4a, arranged vertically and horizontally. A plurality of engagement holes (not shown) are formed at predetermined positions on the bottom surface of the plate stand 4a,
As shown in FIG. 3, by engaging the engagement hole on the plate stand 4a side with the engagement pin 4b provided upright on the plate 4 side, the plate stand 4a can be used when cleaning the well 5. It can be attached to a predetermined position on the plate 4, and on the other hand, after the cleaning of the well 5 is completed, the plate stand 4 can be attached to the plate 4.
The plate stand 4a can be removed from the top of the plate 4 by lifting the entire part a to release the engagement between the engagement hole and the engagement pin 4b. Of course, the plate stand 4a provided with the well 5 may be fixed to the plate 4. A column 6 is provided upright in the center of each of the guide members 2, and a vacuum head 7 is provided between the columns 6 so as to be movable up and down.

At the bottom of the vacuum head 7, the same number of vacuum nozzles 11 as the horizontal wells 5 and guide rods 12 disposed on both sides of the vacuum nozzles 11 are installed facing downward. It communicates with a negative pressure source (not shown). Each vacuum nozzle 11 has its lower end inserted into each well 5 of the plate 4 when the vacuum head 7 is lowered.
In addition, when the lower end of each guide rod 12 engages in the engagement hole 14 drilled at a predetermined position in the plate 4,
The vacuum nozzle 11 is allowed to descend. A vacuum nozzle 1 is placed in front of each vacuum nozzle 11 between the pillars 6.
Injection nozzles 15 for injecting a cleaning liquid into each well 5 emptied by 1 are arranged in a line (see FIG. 5). When cleaning the inside of each well 5, the plate stand 4a with dirty liquid accumulated in each well 5 is placed at a predetermined position on the plate 4, and the plate 4 in that state is
is positioned at the washing start position, which is the closest to you in FIG.

When the levers 22 and 23 on both sides of the handle 21 are pushed down via the handle 21 provided on the main body 1 so that it can be raised and lowered, the vacuum head 7 that is linked to this lowers, and the tips of the vacuum nozzles 11 in a horizontal row are placed in each well 5.
Insert it inside and inhale the liquid. At the same time, the injection nozzle 15 is used to fill the vacuum nozzle 1 in advance with the injection nozzle 15.
A washing liquid is injected into each well 5 which has been emptied by 1. When the handle 21 is raised, the vacuum head 7 is raised, and the plate 4 linked to the handle 21 is advanced from the front to the other side in FIG. 1 by the distance between the wells 5 in the same direction. . Regarding the first horizontal row of wells 5 after cleaning starts, handle 2
When the vertical movement operation 1 is performed, only the liquid in the well 5 is sucked by the vacuum nozzle 11, and the liquid is not injected from the liquid injection nozzle 15.

Therefore, by raising and lowering the handle 21, liquid is sucked in and cleaning liquid is injected into each well 5 in each row, and the plate 4 is automatically advanced by the distance between the wells 5. You will be able to perform the next task in succession just by raising and lowering it. And finally all well 5
When the injection of the cleaning liquid is completed, the interlock between the handle 21 and the plate 4 is temporarily released, the entire plate 4 is manually returned to the initial cleaning start position, and the same operation as described above is performed. Therefore, the reciprocating movement of the entire plate 4 and the injection of the washing liquid into each well 5 are repeated several times. During the last reciprocating operation of the plate 4, the vacuum nozzle 11 described above only sucks the cleaning liquid from the well 5, so that when the cleaning is finally completed, all the wells 5 of the plate base 4a are is in an empty state, and when this state is reached, the plate stand 4a is removed from above the plate 4.

However, in FIG. 2, the tips of the levers 22 and 23 that are linked to the handle 21 are connected to the pin 2, respectively.
Normally, the lever 22 is supported by a tension spring 26 stretched between the arm 25, which is integrally provided at the tip of one lever 22, and the main body 1. The handle 21 is held at the raised end position through the handle 21. And Figure 3,
As shown in FIG. 4, a pair of left and right levers 22, 2
A connecting rod 27 is placed between the vacuum head 7 and the connecting rod 27, and pins 28 provided on both sides of the main body 1 so as to be able to rise and fall are connected between the vacuum head 7 and the connecting rod 27.
The lower end of each pin 28 is brought into elastic contact with the outer peripheral surface of the connecting rod 27 by the weight of the vacuum head 7 and the resiliency of the spring 29 which urges it downward. Therefore, by raising and lowering the levers 22 and 23 through the handle 21, the vacuum head 7 can be raised and lowered through the pin 28. The lower end positions of the levers 22 and 23 are as follows:
This can be regulated by a stopper 30 shown in FIG.

Next, as shown in FIG.
An elongated spring case 36 is pivotally connected to the tip of the arm 25 provided at the front end of the arm 25 via a pin 35, and a rod 37 is slidably passed through the case 36. In the spring case 36, a pair of retainers 38 are slidably provided on the rod 37, and a compression spring 38 is provided between the retainers 38.
A stopper 40 provided at the end of the rod 37 on the pin 35 side is normally brought into elastic contact with the case 36 to connect the rod 37 to the case 36.

The other end of the rod 37 is pivotally connected to the base of an arm 46 that is pivotally supported on the main body 1 by a bearing 45.
An injection cylinder 47 is provided on the free end side of this arm 46.
The operating rod 48 is connected. Injection cylinder 47
1, a cylinder main body 49 fixed to the main body 1, a piston 50, a spring 51 that holds the piston 50 at the retreating end, a suction port 52 that sucks the cleaning liquid from a cleaning liquid tank (not shown), and the sucked cleaning liquid is transferred to each of the above-mentioned injection nozzles. The operating rod 48 is composed of a pair of members 48a and 48b that are swingably connected to each other via a pin 54, and is interlocked with a piston 50, which is connected to the spring. 51 and can be moved forward.

When the lever 22 is pressed down, the arm 25
The spring case 36, which is integral with the spring case 36, is moved forward, and the rod 37 is moved forward accordingly, causing the arm 46 to rotate clockwise in FIG. When the arm 46 is rotated clockwise, the operating rod 48 and the piston 50 are moved forward against the spring 51, and the cleaning liquid in the injection cylinder 47 is supplied to each of the injection nozzles 15. At this time, the pressing down speed of the lever 22, that is, the arm 2
If the forward speed of the rod 5 is too fast, the spring case 36 will move forward at a faster speed than the rod 37 while compressing the spring 39, and the rod 37 will move forward at a predetermined speed due to the elastic force of the compressed spring 39. It moves forward at a speed that follows the spring case 36. Therefore, even when the lever 22 is pressed down at a high speed, the piston 50 of the injection cylinder 47 is moved forward at a constant speed that injects the cleaning liquid from each injection nozzle 15 at the optimum injection speed. You will be able to do this.

A dial 55 is rotatably provided on the upper surface of the main body 1, as shown in FIGS. 1, 2, and 7.
6 are rotatably connected together. A slit 57 is formed in the engaging member 56 so that the arm 46 can pass through the slit 57 when the dial 55 is oriented in a predetermined direction.

Therefore, when the dial 55 is oriented in a predetermined direction, the arm 46 can be passed through the slit 57 and the cleaning liquid can be discharged from the injection cylinder 47 as described above, but when the dial 55 is oriented in another direction. In this case, since the arm 46 is prevented from rotating, the discharge from the injection cylinder 47 can be stopped. In this case, since the arm 25 integrated with the levers 22 and 23 can be rotated by compressing the spring 39, the lever 2
The operations of 2 and 23 are not inhibited.

Next, as shown in FIGS. 1 and 4, a third lever 61 is provided on the outside of one lever 23,
This third lever 61 is pivotally supported on the main body 1 by the aforementioned pin 24 which is common to the lever 23. A push-down part 62 for pushing down this lever 61 is integrally formed on the upper part of the third lever 61, and the above-mentioned lever 2
The third lever 61 can be pushed down independently of 2 and 23, and the third lever 61
An engaging part 63 that engages with the lower part of the adjacent lever 23 is integrally formed at the lower part of the lever 23, so that when the levers 22 and 23 are pushed down, the third lever 61 can also be pushed down at the same time. . Also, the third lever 6
An arm 34 is integrally provided at the tip of the lever 1, and a tension spring 65 is stretched between the arm 64 and the main body 1, similar to the lever 22 described above. Furthermore, this third
The lower end position of the lever 61 is at the stopper 66 in FIG.
The lowering end position of the third lever 61 is set to be lower than the lowering end positions of the levers 22 and 23.

As shown in FIGS. 4 and 5, a pin 71 is provided in the middle of the third lever 61, extending beyond the lower part of the lever 23 and between the pair of levers 22, 23. The pin 71 is engaged with a bifurcated yoke 73 fixed to a shaft 72 rotatably provided on the main body 1 between 23 and 23. A bracket 74 is fixed to the shaft 72, and an engaging claw 75 is rotatably supported at the tip of the bracket 74 by a pin 76.

This engaging claw 75 is capable of engaging with a large number of engaging portions 77 formed at predetermined intervals along the conveyance direction in the center of the plate 4, and is capable of engaging with a large number of engaging portions 77 formed at predetermined intervals along the conveying direction of the plate 4.
1 is pushed down together with levers 22 and 23, and pin 7
1 descends, and along with this, the yoke 73 and the shaft 72
and the engagement claw 75 is connected to the second one via the bracket 74.
When moved counterclockwise in the figure, this engaging claw 7
5 can pass over the engaging portion 77 without moving the plate 4. On the other hand, when the third lever 61 is raised by the spring 65 and the engaging pawl 75 is moved clockwise, it engages with the engaging portion 77 and moves the plate 4 by the distance of the engaging portion 77. It is designed to move forward only.

At a position close to the engaging claw 75 of the main body 1,
As shown in FIG. 4, attach the bracket 81 to the pin 82.
A roller stopper 83 which is rotatably supported by a pin 84 and which engages between the engaging portions 77 adjacent to the distal end of the roller stopper 83 to fix the plate 4 is rotatably provided, and a spring 85 is provided between the rear end and the main body 1 to provide elasticity. The elastic force of this spring 85 keeps the roller stopper 8
3 is brought into elastic contact between the engaging portions 77. Therefore, when the engaging pawl 75 moves the plate 4 forward, the roller stopper 83 resists the spring 85 as the plate 4 moves forward, and moves over one engaging portion 77. When the plate 4 is crossed, the plate 4 is fixed at the intermediate position with the next engaging portion 77, and the plate 4 is positioned at the same time.

Further, as shown in FIGS. 4 and 6, the tip of an arm 86 is rotatably connected to the pin 84 through an elongated hole, and the intermediate portion of the arm 86 is rotatably connected to the shaft 72. An engagement pin 87 that engages with the distal end of the arm 86 is fixed to the distal end of the bracket 74 which supports the arm 86 and is provided with the engagement pawl 75. In the normal state in which the levers 22 and 23 are raised and lowered by the handle 21, this arm 86 simply swings as the roller stopper 83 moves up and down beyond the engaging portion 77. When the lever 61 is pushed down further below the lowering ends of the levers 22 and 23, the bracket 74 of the engaging claw 75 is rotated significantly counterclockwise, and the pin 87 provided thereon is moved against the arm 86.
Since the arm 86 is forcibly rotated counterclockwise by contacting the roller stopper 83, the arm 86 resists the spring 85 and forcibly lowers the roller stopper 83. In this state, the engaging claw 7
5 also moves downward, and the guide rod 12 linked to the levers 22 and 23 remains at the rising end, so the plate 4 is free, and therefore, by pushing down the third lever 61, Thus, the plate 4 can be moved freely.

"Effects of the Invention" As described above, according to the present invention, it is possible to provide a cleaning device whose cleaning operation is extremely simple compared to the conventional method.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the present invention;
Figures 5 and 7 are - lines, - lines, - lines, - lines, and - lines of Fig. 1, respectively.
6 is an exploded bottom view of the main part of FIG. 4. 1...Body, 4...Plate, 5...Well,
7... Vacuum head, 11... Vacuum nozzle, 15... Injection nozzle, 21... Handle,
22, 23... lever, 47... injection cylinder,
52... Suction port, 53... Discharge port, 61... Third
Lever (release mechanism), 75... Engaging claw, 83...
Roller last stopper, 86...arm, 87...engaging pin.

Claims (1)

[Scope of utility model registration request] A plate that is horizontally slidable on the main body of the washing device; a plurality of wells that are arranged on the plate in a vertical direction along the direction of movement of the plate and in a horizontal direction orthogonal thereto; a handle pivotably supported by the main body and capable of vertically reciprocating between a rising end position and a descending end position; a biasing means for returning the handle to the rising end position; A vacuum head is provided on an erected column so that it can be raised and lowered, and is raised and lowered in conjunction with the up and down movement of the handle; a vacuum nozzle that is inserted into the well and sucks and expels the liquid in each well; and a horizontal row of injection nozzles arranged from the vacuum nozzle forward in the direction of movement of the plate and spaced apart by the distance between the wells in the vertical direction. , an injection cylinder that sucks cleaning liquid from the cleaning liquid tank in conjunction with the vertical movement of the handle and discharges the sucked cleaning liquid to each of the injection nozzles; a plurality of engaging portions provided; a rotating shaft rotatably supported horizontally on the lower side of the plate so as to be orthogonal to the moving direction of the plate; movably pivoted,
and a lever that is brought into contact with the handle from below by a biasing means and is raised and lowered in accordance with the vertical movement of the handle to reciprocate the rotation shaft in forward and reverse directions; and a lever provided on the rotation shaft. a bracket that swings back and forth along the moving direction of the plate when the rotary shaft is rotated back and forth via the lever, and a bracket that is swingably provided on the bracket and that moves the plate forward of the bracket. an engaging claw that presses the engaging portion only when swinging in the direction to advance the plate by the distance between the wells in the vertical direction;
By moving the lever to a position below the lower end position of the handle, the rotating shaft is rotated more than the normal reciprocating rotation range, and the engaging portion between the engaging pawl provided on the bracket and the plate is rotated. A cleaning device characterized by forcibly disengaging from the cleaning device.