Leaf sample collecting device for low plants

Abstract

The utility model discloses a leaf sample collecting device for low plants, and belongs to the technical field of leaf sample collecting tools, the leaf sample collecting device comprises a device body and a pair of cutting assemblies used for cutting off leaf stalks, a first through hole is formed in the device body, and the first through hole penetrates through the left end and the right end of the device body in the axial direction so as to temporarily store cut leaves; the cutting assembly is located in the first through hole, the distance between the cutting assembly and the end face of the opening end of the device body is L, and L is larger than 0 and smaller than or equal to the length of the petiole; the cutting assembly is arranged at the position which is a certain distance away from the end face of the opening end of the device body, so that a notch left after a leaf sample is cut can be located on a leaf stalk, damage to a plant body is reduced, and subsequent growth of the plant is facilitated; contact between manual work and the leaf samples in the collecting process can be reduced, and the probability that the leaf samples are polluted is reduced; in addition, the collecting device is small and exquisite in structure, convenient to carry, low in cost and convenient to popularize and apply in scientific researchers in a large range.

Description

Technical Field

[0001] The utility model relates to the technical field of leaf sample collection tools, in particular to a leaf sample collection device for short plants. Background Art

[0002] In scientific research such as nucleic acid extraction or physiological index identification, fresh young leaf samples of plants are often needed. The devices for picking leaves or fruits of tall plants in the prior art are too large in structure and inconvenient to carry, and are not suitable for picking leaf samples of short plants. Therefore, the traditional method of collecting leaf samples is to grab the leaves with one hand and remove the leaves from the stems of the plants with scissors or tweezers with the other hand. This method of picking leaves leaves on the stems of the plants, which causes great damage to the plants and is not conducive to the subsequent growth of the plants.

[0003] Therefore, how to provide a leaf sample collection device for low-growing plants to reduce the damage to the plant body when picking leaf samples is a technical problem that those skilled in the art need to solve urgently. Utility Model Content

[0004] The purpose of the utility model is to provide a leaf sample collection device for low plants in view of the defects and shortcomings in the prior art, so that the incision left after collecting the leaf sample is located on the petiole rather than the stem of the plant, thereby reducing damage to the plant body and facilitating the subsequent growth of the plant.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The utility model provides a leaf sample collection device for low plants, comprising a device body and a pair of cutting components for cutting off petioles, wherein a first through hole is provided inside the device body, and the first through hole axially penetrates the left and right ends of the device body to temporarily store the cut leaves, the cutting component is located inside the first through hole, and the distance between the cutting component and the end face of the opening end of the device body is L, and 0<L≤the length of the petiole.

[0007] Preferably, the cutting assembly includes a lower jaw slice and an upper jaw slice that are used in conjunction with each other, the lower jaw slice is fixedly arranged on the inner wall of the first through hole, and the upper jaw slice is connected to a driving component for driving the upper jaw slice to move closer to or away from the lower jaw slice to cut off or loosen the petiole.

[0008] Preferably, the driving component includes a spring fixedly connected to the upper jaw slice and a pressing plate located on the outer peripheral surface of the first through hole, and a second through hole for the spring to pass through is opened on the device body, and one end of the spring passing through the second through hole is fixedly connected to the pressing plate, and the pressing plate is pressed to drive the upper jaw slice closer to the lower jaw slice, or the pressing plate is released to move the upper jaw slice away from the lower jaw slice.

[0009] Preferably, the device body is a cylindrical structure, and the radial width of the upper jaw slice is not greater than the radial width of the lower jaw slice, so that the upper jaw slice can contact the lower jaw slice.

[0010] Preferably, a limiting block is provided inside the first through hole, a sliding groove is provided on the surface of the limiting block, and the front end and / or the rear end of the upper jaw slice is slidably matched with the sliding groove respectively.

[0011] Preferably, a sample storage device is further provided at the end of the device body, and the sample storage device and the device body are detachably connected.

[0012] Preferably, the sample storage device is inserted into the end of the device body.

[0013] Preferably, the device body is a metal tube, the sample storage device is a plastic tube, and a portion of the device body connected to the sample storage device is provided with an elastic connector, and the elastic connector is interference-fitted with the sample storage device.

[0014] Compared with the prior art, the utility model has achieved the following technical effects:

[0015] 1. The leaf sample collection device for low-growing plants disclosed in the utility model arranges the cutting assembly at a certain distance from the end surface of the opening end of the device body, so that the incision left after cutting the leaf sample is located on the petiole, thereby reducing damage to the plant body and facilitating the subsequent growth of the plant.

[0016] Compared with the prior art, other technical solutions of the utility model have achieved the following technical effects:

[0017] 2. The leaf sample collection device for low plants disclosed in the utility model is connected to a sample storage device at the end of the device body, so that the collected leaf samples are directly sent to the sample storage device, reducing the contact between manual labor and leaf samples during the collection process, reducing the probability of leaf samples being contaminated, and improving the accuracy of experimental results.

[0018] 3. The leaf sample collection device for low plants disclosed in the utility model has a small overall size, is convenient for scientific researchers to carry around, and has a low manufacturing cost, is conducive to large-scale promotion and application among scientific researchers, and has a good application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 It is a schematic diagram of the overall structure of the leaf sample collection device;

[0021] Figure 2 It is a structural schematic diagram of the positional relationship between the upper jaw slice, the lower jaw slice and the limit block;

[0022] Figure 3 It is a schematic diagram of the structure of the limit block.

[0023] Among them, 1. device body; 2. first through hole; 3. mandibular slice; 4. maxillary slice; 5. spring; 6. pressing plate; 7. second through hole; 8. sample storage device; 9. limit block; 10. slide groove; 11. elastic connector. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] like Figure 1As shown, the utility model provides a leaf sample collection device for low plants, including a device body 1 and a pair of cutting components for cutting petioles. A first through hole 2 is provided inside the device body 1, and the first through hole 2 axially penetrates the left and right ends of the device body 1 to temporarily store the cut leaves. The cutting component is located inside the first through hole 2, and the distance between the cutting component and the end face of the opening end of the device body 1 is L, 0<L≤the length of the petiole. By setting the cutting component to be a certain distance away from the end face of the opening end of the device body 1, the incision left after cutting is located on the petiole. Compared with the cutting method in which the incision is located on the plant stem, the present application can well protect the plant body and reduce the damage of the incision to the plant body. As a preferred embodiment of the present application, the cutting component is 0.5 cm away from the end face of the opening end of the device body 1.

[0027] The cutting assembly includes a mandibular slice 3 and a mandibular slice 4 that are used together. The mandibular slice 3 is fixedly arranged on the inner wall of the first through hole 2. The mandibular slice 4 is connected to a driving component used to drive the mandibular slice 4 to move closer to or away from the mandibular slice 3 to cut off or loosen the petiole. The mandibular slice 4 and the mandibular slice 3 can form a scissor-like structure. The mandibular slice 4 and the mandibular slice 3 can also be in the same straight line. As a preferred embodiment of the present application, the mandibular slice 4 and the mandibular slice 3 are arranged relatively to each other up and down and are in the same straight line.

[0028] The driving component for driving the upper jaw slice 4 to move can be a push rod structure, a cylinder telescopic structure, a gear rack structure, etc. As a preferred embodiment of the present application, the driving component includes a spring 5 fixedly connected to the upper jaw slice 4 and a pressing plate 6 located on the outer peripheral surface of the first through hole 2. A second through hole 7 for the spring 5 to pass through is opened on the device body 1. One end of the spring 5 passing through the second through hole 7 is fixedly connected to the pressing plate 6. The pressing plate 6 is pressed to drive the upper jaw slice 4 to approach the lower jaw slice 3, or the pressing plate 6 is released to move the upper jaw slice 4 away from the lower jaw slice 3.

[0029] When the axial length of the device body 1 is less than the length of the blade to be cut, there is a situation where the cut blade slips from the device body 1, causing the removed blade sample to be contaminated. For this reason, the present application sets the axial length of the device body 1 to be not less than the length of the blade, or connects a storage device for storing the blade at the end of the device body 1. As a preferred embodiment of the present application, a sample storage device 8 is provided at the end of the device body 1. A blind hole is opened inside the sample storage device 8. The diameter of the blind hole is not less than the width of the blade, and the length of the blind hole is not less than the length of the blade. Since the sample storage device 8 used in the laboratory is generally a circular test tube, in order to facilitate the connection with the sample storage device 8, the device body 1 generally also adopts a cylindrical pipe fitting of a size adapted thereto. Of course, the device body 1 adopts a prismatic, spherical or other structure, and a connector is provided at the portion of the device body 1 connected to the sample storage device 8 to install the sample storage device 8 on the device body 1, or when the sample storage device 8 adopts a special-shaped structure, the device body 1 can also adopt a special-shaped structure used in conjunction with it; in order to facilitate the disassembly of the sample storage device 8, the present application sets a detachable connection between the sample storage device 8 and the device body 1.

[0030] Since the device body 1 is a cylindrical structure, the radial width of the upper jaw slice 4 is set not greater than the radial width of the lower jaw slice 3, so that the upper jaw slice 4 can move to a position in contact with the lower jaw slice 3, and a limit block 9 is set inside the first through hole 2, such as Figures 2 to 3 As shown, the end of the stopper 9 close to the inner wall of the first through hole 2 is an arc shape that matches the diameter of the first through hole 2, and the end away from the inner wall of the first through hole 2 is a plane, and a slide groove 10 extending in the vertical direction is provided on the plane. The front end and / or rear end of the upper jaw slice 4 is inserted into the slide groove 10. Under the force applied to the pressing plate 6, the upper jaw slice 4 slides up and down along the direction defined by the slide groove 10 to avoid the problem that the upper jaw slice 4 deviates from the predetermined motion trajectory, causing the upper jaw slice 4 to collide with the inner wall of the through hole, causing the upper jaw slice 4 to be damaged, thereby affecting the cutting effect. The fixing method between the stopper 9 and the inner wall of the first through hole 2 can be bonding, screw / bolt connection, welding, clamping, etc.

[0031] The connection between the device body 1 and the sample storage device 8 can be a threaded connection or a plug-in connection. Since the openings of the existing sample storage devices 8 are not provided with threads, the present application preferably adopts a plug-in connection between the device body 1 and the sample storage device 8. Specifically, the device body 1 is a metal tube, and the sample storage device 8 is a plastic tube. An elastic connector 11 is provided at the portion of the device body 1 connected to the sample storage device 8. The elastic connector 11 and the sample storage device 8 have an interference fit, that is, the diameter of the elastic connector 11 is slightly smaller than the diameter of the sample storage device 8, so that the sample storage device 8 can be inserted into the elastic connector 11, and in the process of collecting leaf samples, the sample storage device 8 is firmly connected to the elastic connector 11 and will not fall off naturally from the elastic connector 11. As a preferred embodiment of the present application, the inner diameter of the sample storage device 8 is 0.05 cm smaller than the outer diameter of the elastic connector 11. 。 The connection between the elastic connector 11 and the device body 1 can be achieved by bonding, screw / bolt connection, or by using a clamp to clamp the elastic connector 11 to the device body 1 .

[0032] While being able to meet the installation requirements of the upper jaw slice 4, the lower jaw slice 3, the spring 5 and the pressing plate 6, the axial dimension of the device body 1 should be as small as possible; while meeting the requirements of blade passage and the installation requirements of the limit block 9, the radial dimension of the device body 1 should also be as small as possible to reduce the overall size of the collection device and make it easy to carry, thereby providing convenience for scientific researchers to collect leaf samples. In addition, the collection device is low-cost and is conducive to large-scale promotion and application in scientific research institutions.

[0033] When in use, the sample storage device 8 is mounted on the device body 1, the handheld device body 1 is aimed at the leaf sample to be collected, and the pressing plate 6 is pressed downward with the finger to make the upper jaw slice 4 close to the lower jaw slice 3 to cut off the petiole, and then the pressing plate 6 is released, and the collection device is shaken to make the leaf sample slide into the sample storage device 8, and the collection is continued. After the collection is completed, the sample storage device 8 is removed and directly quick-frozen. During the entire collection process, the contact between the leaf sample and the human body can be effectively avoided, the probability of the leaf sample being contaminated is reduced, and it is conducive to improving the collection efficiency of the leaf sample.

[0034] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A leaf sample collection device for low plants, characterized in that: The device comprises a device body and a pair of cutting components for cutting off petioles, wherein a first through hole is provided inside the device body, and the first through hole axially penetrates the left and right ends of the device body to temporarily store the cut leaves, and the cutting component is located inside the first through hole, and the distance between the cutting component and the end surface of the opening end of the device body is L, and 0<L≤the length of the petiole; The cutting assembly includes a lower jaw slice and an upper jaw slice that are used together. The lower jaw slice is fixedly arranged on the inner wall of the first through hole, and the upper jaw slice is connected to a driving component used to drive the upper jaw slice to approach or move away from the lower jaw slice to cut off or loosen the petiole.

2. The leaf sample collection device for low plants according to claim 1, characterized in that: The driving component includes a spring fixedly connected to the upper jaw slice and a pressing plate located on the outer peripheral surface of the first through hole. A second through hole for the spring to pass through is opened on the device body. One end of the spring passing through the second through hole is fixedly connected to the pressing plate. The pressing plate is pressed to drive the upper jaw slice to approach the lower jaw slice, or the pressing plate is released to move the upper jaw slice away from the lower jaw slice.

3. The leaf sample collection device for low plants according to claim 2, characterized in that: The device body is a cylindrical structure, and the radial width of the upper jaw slice is not greater than the radial width of the lower jaw slice, so that the upper jaw slice can contact the lower jaw slice.

4. The leaf sample collection device for low plants according to claim 3, characterized in that: A limiting block is disposed inside the first through hole, a sliding groove is provided on the surface of the limiting block, and the front end and / or the rear end of the upper jaw slice is slidably matched with the sliding groove respectively.

5. The leaf sample collection device for low plants according to any one of claims 1 to 4, characterized in that: A sample storage device is also provided at the end of the device body, and the sample storage device and the device body are detachably connected.

6. The leaf sample collection device for low plants according to claim 5, characterized in that: The sample storage device is inserted into the distal end of the device body.

7. The leaf sample collection device for low plants according to claim 6, characterized in that: The device body is a metal tube, the sample storage device is a plastic tube, and a portion of the device body connected to the sample storage device is provided with an elastic connector, and the elastic connector is interference-fitted with the sample storage device.

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