Pipette access case

Abstract

This utility model discloses a pipette dispensing box, belonging to the field of pipette dispensing. It includes a box body with an internal storage cavity and a device cavity. The storage cavity has a filling port at the top, which is sealed by a lid, and a lower pipette opening at the bottom. A roller is rotatably connected inside the device cavity, and the roller is equipped with a drive mechanism. The roller's surface has axially oriented grooves, and the box body has a pipette outlet on its side wall. The roller transfers pipettes leaking from the lower pipette opening to the outlet through the grooves. A pipette holder is fixed to the outer wall of the box body at the lower edge of the outlet. An arc-shaped baffle and an inclined guide plate are also fixedly installed inside the device cavity. A baffle is slidably connected to the outlet, and the baffle is equipped with an opening mechanism and a resilient reset element. The pipette dispensing box provided by this utility model only requires the drive mechanism to rotate the roller once, eliminating the need for frequent opening and closing of the lid. This simplifies operation and eliminates the risk of the box tipping over.

Description

Technical Field

[0001] This utility model relates to the field of pipette preservation technology, and in particular to a pipette dispensing box. Background Technology

[0002] Pipettes are commonly used volumetric glass instruments in laboratories, used to accurately transfer specific volumes of solution, and are widely used in titration analysis and quantitative control experiments.

[0003] Unused pipettes are usually temporarily placed on pipette racks. However, pipette racks typically only have a frame structure and do not provide comprehensive protection for pipettes. If pipettes placed on pipette racks are not used for a long time, dust may accumulate on their surface or the pipettes may be damaged by impact.

[0004] To solve this problem, pipettes that are not used for a long time are usually placed in a storage box. When needed, the pipettes are taken out of the storage box. However, ordinary storage boxes require frequent opening and closing operations when taking out pipettes. When the storage box is large, it takes a lot of effort to open and close the lid. In addition, there is a risk of the box shaking and tipping over during the opening and closing operations, which may damage the pipettes stored inside. Summary of the Invention

[0005] To address the problem that existing pipette storage boxes are inconvenient for retrieving pipettes, the present invention aims to provide a pipette retrieval box that at least partially solves the aforementioned problem.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: A pipette dispensing box includes a box body, the box body having a storage cavity and a device cavity inside. The storage cavity has a filling port at the top and a lower pipette port adapted to the pipette at the bottom. The filling port is closed by a removable box cover. A roller is rotatably connected inside the device cavity. The roller is equipped with a drive mechanism. The surface of the roller has a groove along the axial direction adapted to the pipette. The side wall of the box body has an outlet port communicating with the device cavity. The roller is used to transfer the pipette leaking from the lower pipette port to the outlet port through the groove on its surface. A pipe bracket located at the lower edge of the outlet port is also fixed on the outer wall of the box body. An arc-shaped baffle and an inclined guide plate are also fixedly installed inside the equipment cavity. The inclined guide plate is used to guide the pipette that has fallen out of the tube groove to the outlet. The arc-shaped baffle is used to prevent the pipette in the tube groove from falling out before rotating to the inclined guide plate. A baffle is slidably connected to the outlet, and the baffle can slide between a first position that closes the outlet and a second position that opens the outlet. An opening mechanism for moving the baffle from the first position to the second position is connected between the baffle and the roller. An elastic reset member for keeping the baffle in the first position is also connected between the baffle and the box body.

[0007] In some preferred embodiments, the door opening mechanism includes a gear, a rack, and a traction rope steering wheel. The gear is coaxially and fixedly installed with the roller. The rack meshes with the gear and is slidably connected in the equipment cavity. The traction rope is connected between the rack and the baffle. The steering wheel is installed in the equipment cavity and is used to change the direction of the traction rope.

[0008] In some preferred embodiments, the gear is a partial gear, and the engagement of the partial gear with the rack occurs after the pipette falls into the tube groove. When the pipette reaches the outlet position, the baffle is in the first position or in the process of moving from the first position to the second position. When the baffle moves to the second position, the partial gear and the rack are not completely disengaged, so that the traction rope is stretched due to elasticity.

[0009] In some preferred embodiments, the inner wall of the baffle is provided with a cushioning pad made of an elastic or flexible material.

[0010] In some preferred embodiments, the top of the baffle is provided with an extension plate, which smoothly fills the gap between the outlet and the inclined guide plate when the baffle is in the second position.

[0011] In some preferred embodiments, the drive mechanism is a motor fixedly installed inside the equipment cavity, the motor shaft of the motor is mechanically connected to the roller, and a switch for controlling the start and stop of the motor is installed on the outer wall of the box.

[0012] In some preferred embodiments, the drive mechanism is configured as a handle located outside the housing, the handle being connected to the central axis of the roller.

[0013] In some preferred embodiments, a ratchet mechanism for rotating the roller in a preset direction is also installed between the roller and the device cavity.

[0014] In some preferred embodiments, a leak-proof baffle is also provided at the lower edge of the lower pipe opening on the side away from the arc-shaped baffle.

[0015] The beneficial effects of this utility model by adopting the above technical solution are as follows: When using the pipette retrieval box provided by this utility model, the pipette stored in the storage cavity only needs to be driven by the drive mechanism to rotate the roller once, so that the pipette can roll out from the outlet through the pipe groove, the arc baffle, and the inclined guide plate and fall onto the pipe rack. There is no need for frequent opening and closing of the cap, which not only makes the operation simple, but also eliminates the risk of the box tipping over. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a front sectional view of the baffle in the first position in this utility model; Figure 3 This is a front sectional view of the baffle in this utility model when it is between the first position and the second position; Figure 4 This is a front sectional view of the baffle in the second position in this utility model; Figure 5 This is a front sectional view of the baffle plate in the present invention when it is reset to the first position; Figure 6 This is a sectional view of the back of the utility model when the baffle is in the first position.

[0017] In the diagram: 1-box body, 11-storage cavity, 12-equipment cavity, 13-lower pipe opening, 131-leakage baffle, 14-box cover, 15-outlet pipe, 16-connection bracket, 2-pipette, 3-roller, 31-pipe groove, 32-central shaft, 4-drive mechanism, 5-arc baffle, 6-inclined guide plate, 7-baffle, 71-extension plate, 8-door opening mechanism, 81-gear, 82-rack, 83-traction rope, 84-steering wheel, 9-elastic reset component, 10-ratchet mechanism, 101-ratchet, 102-pawl, 103-tension spring. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0019] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the description of the structure of this utility model shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] The terms "first" and "second" in this technical solution are merely designations for corresponding structures that are identical or similar, or that perform similar functions. They do not represent an arrangement of the importance of these structures, nor do they imply any ranking, comparison of size, or other meaning.

[0021] Furthermore, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two structures. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the overall concept and the specific context of the solution.

[0022] Example

[0023] A pipette dispenser, such as Figure 1-6 As shown, it includes a box body 1, a pipette 2, a roller 3, a drive mechanism 4, an arc-shaped baffle 5, an inclined guide plate 6, a baffle 7, a door opening mechanism 8, and an elastic reset component 9.

[0024] The box body 1 is roughly rectangular shell-shaped, with independent storage chambers 11 and equipment chambers 12 inside. The bottom of the storage chamber 11 is arc-shaped, and a lower tube opening 13 adapted to the pipette 2 is opened at the lowest point of the storage chamber 11, so that the pipette 2 stored in the storage chamber 11 can enter the equipment chamber 12 sequentially through the lower tube opening 13. The top of the storage chamber 11 is provided with a filling port, which is closed by a detachable box cover 14, for example, the box cover 14 is connected to the box body 1 by a snap-fit ​​structure, screws, or hinges and latches.

[0025] A roller 3 is rotatably connected inside the device cavity 12. A groove 31, adapted to the pipette 2, is axially formed on the outer circumference of the roller 3. A central shaft 32 is coaxially fixed at the center of the roller 3, with both ends rotatably connected to the side wall of the housing 1. The roller 3 is equipped with a drive mechanism 4 for rotating it. For example, the drive mechanism 4 can be a handle located outside the housing 1, fixedly connected to the central shaft 32 of the roller 3. Rotating the handle will rotate the roller 3. Alternatively, in other embodiments, the drive mechanism 4 can be a motor (not shown) fixedly installed inside the device cavity 12. The motor shaft is mechanically connected to the roller 3, such as by gear transmission or synchronous belt transmission. A switch (not shown) for controlling the motor's start and stop is installed on the outer wall of the housing 1.

[0026] When the drive mechanism 4 rotates the roller 3 to align the tube groove 31 with the lower tube opening 13, the pipette 2 in the storage chamber 11 can fall into the tube groove 31 through the lower tube opening 13. Typically, the highest point of the outer circumference of the roller 3 is positioned such that the pipette 2 falling into the tube groove 31 can move away from the lower tube opening 13 as the roller 3 rotates (at this point, the lower tube opening 13 will not obstruct the pipette 2 already in the tube groove 31), while simultaneously preventing pipettes 2 not falling into the tube groove 31 (only falling on the circumferential side wall of the roller 3) from moving away from the lower tube opening 13 as the roller 3 rotates (at this point, the lower tube opening 13 will obstruct the pipette 2 not falling into the tube groove 31). This ensures that only one pipette 2 can be carried out through the tube groove 31 with each rotation of the roller 3.

[0027] The lower side wall of the box body 1 has an outlet 15 that communicates with the equipment cavity 12. The roller 3 is used to transfer the pipette 2 leaking from the lower outlet 13 to the outlet 15 through the pipe groove 31 on it. In addition, a pipe bracket 16 is fixed on the outer wall of the box body 1. The pipe bracket 16 is located at the lower edge of the outlet 15 to receive the pipette 2 discharged from the outlet 15 and prevent the pipette 2 from falling.

[0028] An arc-shaped baffle 5 and an inclined guide plate 6 are also fixedly installed inside the equipment cavity 12. The inclined guide plate 6 is connected between the outlet 15 and the roller 3, and is used to guide the pipette 2 that has fallen out of the tube groove 31 to the outlet 15. The arc-shaped baffle 5 is located between the inclined guide plate 6 and the lower tube 13. The axis of the arc-shaped baffle 5 coincides with the axis of the roller 3. There is a certain gap between the inner wall of the arc-shaped baffle 5 and the outer wall of the roller 3. When the roller 3 rotates, the arc-shaped baffle 5 can prevent the pipette 2 in the tube groove 31 from falling out prematurely before rotating to the position of the inclined guide plate 6.

[0029] A baffle 7 is slidably connected at the outlet 15. The baffle 7 can slide between a first position that closes the outlet 15 and a second position that opens the outlet 15. That is, when the baffle 7 slides to the first position, the baffle 7 can close the outlet 15 to block the pipette 2; when the baffle 7 slides to the second position, the baffle 7 can open the outlet 15 to allow the pipette 2 to roll out from the outlet 15.

[0030] In addition, an opening mechanism 8 is connected between the baffle 7 and the roller 3 to move the baffle 7 from the first position to the second position. At the same time, an elastic reset member 9 is also connected between the baffle 7 and the box body 1 to keep the baffle 7 in the first position.

[0031] In this embodiment, the door opening mechanism 8 includes a gear 81, a rack 82, a traction rope 83, and a steering wheel 84.

[0032] Gear 81 is coaxially fixedly installed with roller 3. Rack 82 meshes with gear 81 and is slidably connected to the inner side of the bottom wall of equipment cavity 12. Traction rope 83 is connected between rack 82 and baffle 7. Steering wheel 84 is installed on the inner wall of equipment cavity 12. Steering wheel 84 is used to change the direction of traction rope 83, so that the rotation of gear 81 can be converted into the horizontal movement of rack 82. The horizontal movement of rack 82 can be converted into the lifting and lowering movement of baffle 7 through steering wheel 84, thereby driving baffle 7 to move from the first position to the second position.

[0033] Gear 81 is configured as a partial gear, meaning its teeth do not complete a full revolution. The engagement of this partial gear with rack 82 occurs after the pipette 2 falls into the tube groove 31. When the pipette 2 reaches the outlet 15, the baffle 7 is still in the first position or in the process of moving from the first position to the second position. That is, the pipette 2 first reaches the baffle 7, and then the baffle 7 moves to the second position. For example, when the roller 3 rotates to the position where the pipette 2 disengages from the tube groove 31, gear 81 engages with rack 82. Thus, the pipette 2 does not roll directly out of the inclined baffle 6 and outlet 15, but is first blocked by the baffle 7, thereby dissipating the rolling kinetic energy of the pipette 2. This allows the tube holder 16 to only receive the slower-moving pipette 2. In order to further reduce the impact force of the pipette 2, a buffer pad made of elastic or flexible material (not shown in the figure) is provided on the inner wall of the baffle 7. In this way, when the pipette 2 rolls on the inclined guide plate 6 and is blocked by the baffle 7, the impact force can be effectively reduced, thereby protecting the pipette 2.

[0034] Additionally, when the baffle 7 moves to the second position and the pipette 2 passes through the outlet 15, the gear 81 disengages from the rack 82. The baffle 7 then resets under the elastic force of the elastic reset member 9 and moves back to the first position, continuing to close the outlet 15. For example, the elastic reset member 9 can be configured as a spring. It is easy to understand that, to avoid the situation where the baffle 7 has already reset before the pipette 2 has completely passed through the outlet 15, this embodiment also configures a traction rope 83 with slight elasticity. When the baffle 7 moves to the second position, the gear 81 and rack 82 are not completely disengaged; that is, the gear 81 can continue to rotate a certain angle while still engaging with the rack 82. At this time, the baffle 7 will remain in the second position, allowing the pipette 2 sufficient time to pass through the outlet 15. During this process, the traction rope 83 adapts to the movement of the rack 82 through elastic stretching.

[0035] An extension plate 71 is integrally formed at the top of the baffle 7. When the baffle 7 moves to the second position, the extension plate 71 fills the gap between the outlet 15 and the inclined guide plate 6. The extension plate 71 is usually parallel to the inclined guide plate 6, and the top surface of the extension plate 71 is also flush with the top surface of the inclined guide plate 6, so that the pipette 2 can smoothly roll from the inclined guide plate 6 onto the extension plate 71, and then roll down through the outlet 15 onto the pipette holder 16. Usually, the top surface of the pipette holder 16 at the position where it connects to the housing 1 also smoothly contacts the other end of the extension plate 71, thereby eliminating the drop caused by the step during the rolling process of the pipette 2, making the rolling process of the pipette 2 more stable.

[0036] In addition, a ratchet mechanism 10 is installed between the roller 3 and the inner wall of the equipment cavity 12 to rotate the roller 3 in a preset direction, such as... Figure 6 As shown, the ratchet mechanism 10 includes a ratchet 101, a pawl 102, and a tension spring 103. The ratchet 101 is coaxially and fixedly mounted to the roller 3. The pawl 102 is pivotally connected to the inner wall of the equipment cavity 12, and the tension spring 103 is connected between the pawl 102 and the inner wall of the equipment cavity 12. In this embodiment, the ratchet mechanism 10 is used to rotate the roller 3 toward the side where the tube groove 31 on it is located, towards the arc-shaped baffle 5. Typically, the ratchet mechanism 10 and the door opening mechanism 8 are respectively located at opposite axial ends of the roller 3 to avoid mutual interference.

[0037] A leak-proof baffle 131 is also provided at the lower edge of the lower pipe opening 13 away from the arc-shaped baffle 5, so that when the pipette 2 falls into the pipe groove 31, it will not roll off the side of the lower pipe opening 13 away from the arc-shaped baffle 5.

[0038] The usage process of the pipette dispensing box provided in this embodiment of the utility model is as follows: In the initial state, the tube groove 31 on the roller 3 is at its apex position, and the pipette 2 stored in the storage chamber 11 falls into the tube groove 31 through the lower tube opening 13, as shown. Figure 2 As shown; when pipette 2 is needed, the drive mechanism 4 drives the roller 3 to rotate, and the pipette groove 31 rotates to the side where the arc-shaped baffle 5 is located. Under the action of the arc-shaped baffle 5, the pipette 2 is held in the pipette groove 31. When the roller 3 rotates to the position where the pipette groove 31 is located on the inclined guide plate 6, the pipette groove 31 is no longer blocked by the arc-shaped baffle 5, thereby allowing the pipette 2 to roll onto the inclined guide plate 6, as shown. Figure 3 As shown; the drive mechanism 4 continues to drive the roller 3 to rotate, which in turn drives the rack 82 to move via the gear 81. The rack 82 then drives the baffle 7 to slide downwards via the traction rope 83 until the baffle 7 moves to the lowest second position. The pipette 2 then rolls onto the pipe rack 16 through the outlet 15. Figure 4As shown; as the drive mechanism 4 continues to drive the roller 3 to rotate, when the gear 81 disengages from the rack 82, the elastic reset member 9 springs back and drives the baffle 7 to return to the first position, as shown. Figure 5 As shown, as the drive mechanism 4 continues to drive the roller 3 to rotate, the groove 31 on the roller 3 is brought back to the initial state at the apex position.

[0039] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A pipette dispensing box, characterized in that: The device includes a housing, which contains a storage chamber and a device chamber. The storage chamber has a filling port at the top and a lower opening at the bottom that is compatible with the pipette. The filling port is closed by a removable cover. A roller is rotatably connected inside the device chamber. The roller is equipped with a drive mechanism. The surface of the roller has a groove along the axial direction that is compatible with the pipette. The side wall of the housing has an outlet that communicates with the device chamber. The roller is used to transfer the pipette leaking from the lower opening to the outlet through the groove on its surface. A pipe bracket located at the lower edge of the outlet is also fixed on the outer wall of the housing. An arc-shaped baffle and an inclined guide plate are also fixedly installed inside the equipment cavity. The inclined guide plate is used to guide the pipette that has fallen out of the tube groove to the outlet. The arc-shaped baffle is used to prevent the pipette in the tube groove from falling out before rotating to the inclined guide plate. A baffle is slidably connected to the outlet, and the baffle can slide between a first position that closes the outlet and a second position that opens the outlet. An opening mechanism for moving the baffle from the first position to the second position is connected between the baffle and the roller. An elastic reset member for keeping the baffle in the first position is also connected between the baffle and the box body.

2. The pipette dispenser according to claim 1, characterized in that: The door opening mechanism includes a gear, a rack, a traction rope, and a steering wheel. The gear is coaxially fixedly installed with the roller. The rack meshes with the gear and is slidably connected in the equipment cavity. The traction rope is connected between the rack and the baffle. The steering wheel is installed in the equipment cavity and is used to change the direction of the traction rope.

3. The pipette dispenser according to claim 2, characterized in that: The gear is a partial gear, and the action of the partial gear meshing with the rack occurs after the pipette falls into the tube groove. When the pipette reaches the outlet position, the baffle is in the first position or in the process of moving from the first position to the second position. When the baffle moves to the second position, the partial gear and the rack are not completely disengaged, so that the traction rope is stretched due to elasticity.

4. The pipette dispenser according to claim 1, characterized in that: The inner wall of the baffle is provided with a cushioning pad made of elastic or flexible material.

5. The pipette dispenser according to claim 1, characterized in that: The top of the baffle is provided with an extension plate. When the baffle is in the second position, the extension plate smoothly fills the gap between the outlet and the inclined guide plate.

6. The pipette dispenser according to claim 1, characterized in that: The drive mechanism is a motor fixedly installed inside the equipment cavity. The motor shaft is mechanically connected to the roller. A switch for controlling the start and stop of the motor is installed on the outer wall of the box.

7. The pipette dispenser according to claim 1, characterized in that: The drive mechanism is configured as a handle located outside the housing, and the handle is connected to the central axis of the roller.

8. The pipette dispenser according to claim 1, characterized in that: A ratchet mechanism for rotating the roller in a preset direction is also installed between the roller and the equipment cavity.

9. The pipette dispenser according to claim 1, characterized in that: A leak-proof baffle is also provided at the lower edge of the side of the lower pipe opening away from the arc-shaped baffle.

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