CN116493058A

CN116493058A - Sample container

Info

Publication number: CN116493058A
Application number: CN202310207072.2A
Authority: CN
Inventors: 文志勇; 吉斌; 李孟达; 易小钧; 谭兵; 刁维均
Original assignee: Chongqing Weikebei Technology Co ltd
Current assignee: Chongqing Weikebei Technology Co ltd
Priority date: 2023-03-03
Filing date: 2023-03-03
Publication date: 2023-07-28

Abstract

The invention discloses a sample container, which comprises a main body, a middle cover and an upper cover, wherein the main body is provided with a containing cavity capable of storing a sample and an orifice communicated with the containing cavity; the middle cover is arranged on the main body and partially covers the cavity opening; the middle cover is provided with a sample injection channel communicated with the cavity and the outside, the peripheral wall of the middle cover is convexly provided with a first limiting part and a first guiding part, and the first limiting part is positioned between the first guiding part and the communication part between the sample injection channel and the outside; a first guide surface is formed on one side of the first guide part facing the first limiting part, and at least part of the surface of the guide surface is in an inclined plane or an arc surface; the upper cover is detachably arranged on the middle cover and covers the sample injection channel; the inner peripheral wall of upper cover is equipped with second spacing portion and second guiding portion, and second spacing portion and first spacing portion joint, second guiding portion and first guiding portion butt are spacing. The sample container provided by the invention has higher sample adding efficiency.

Description

Sample container

Technical Field

The invention relates to the technical field of medical instruments, in particular to a sample container.

Background

In the sample detection link in a medical laboratory, in order to ensure that a sufficient amount of available samples are in sample containers such as a sample tube and a reagent bottle, the samples need to be added into the sample containers, namely the sample adding operation of the sample containers.

In the related art, a sample container is capped and sealed with a container cap, and the sample container and the container cap are connected by screw threads, and when the sample is loaded into the sample container, the container cap must be rotated to perform the cap opening operation. In the uncapping operation, the container cover needs to be rotated for a plurality of times to be separated from the sample container, so that the sample adding operation of the sample container takes a long time, and the sample adding operation of the sample container is low in efficiency.

Disclosure of Invention

The invention mainly aims to provide a sample container, which aims to improve the efficiency of sample adding operation on the sample container.

To achieve the above object, the present invention proposes a sample container comprising:

the main body is provided with a cavity capable of storing a sample and an orifice communicated with the cavity;

the middle cover is arranged on the main body and partially covers the cavity opening; the middle cover is provided with a sample injection channel communicated with the containing cavity and the outside, a first limiting part and a first guiding part are convexly arranged on the peripheral wall of the middle cover, and the first limiting part is positioned between the first guiding part and the communication part between the sample injection channel and the outside; a first guide surface is formed on one side of the first guide part facing the first limiting part, and at least part of the surface of the guide surface is in an inclined plane or an arc surface; and

The upper cover is detachably arranged on the middle cover and covers the sample injection channel; the inner peripheral wall of the upper cover is provided with a second limiting part and a second guiding part, the second limiting part is clamped with the first limiting part, and the second guiding part is in butt joint with the first guiding part for limiting;

when the upper cover rotates relative to the middle cover, the second guide part moves along the guide surface of the first guide part and drives the first limit part to be separated from the second limit part.

In an embodiment of the present invention, the first limiting portion is disposed along a circumferential direction of an outer wall of the middle cover;

the cross-sectional area of the first limiting part gradually decreases from one end close to the first guiding part to one end far away from the first guiding part;

when the upper cover is connected with the middle cover, the second limiting part and one side of the first limiting part, which faces the first guiding part, are in butt joint limiting.

In an embodiment of the present invention, the second guide portion is disposed along a circumferential direction of the outer wall of the middle cover;

the second guide part is provided with a second guide surface facing to one side of the first guide part, the second guide surface is arranged in a wave shape, and the shape of the first guide surface of the first guide part is matched with the shape of the second guide surface of the second guide part.

In one embodiment of the invention, the middle cover comprises a drainage section and a sealing cover section which are connected;

the drainage section is provided with a drainage channel, the sealing cover section is provided with a transition channel communicated with the containing cavity, and the transition channel is communicated with the drainage channel to form the sample injection channel;

the sealing cover section is detachably connected with the main body, the drainage section is detachably connected with the upper cover, and the upper cover covers the drainage channel.

In one embodiment of the invention, the sample container further comprises a sampling member;

one end of the sampling piece penetrates through the transition channel and is inserted into the drainage channel, a sampling gap is formed between one end of the sampling piece, which is positioned in the drainage channel, and the inner wall of the drainage channel, and the sampling gap is communicated with the transition channel.

In an embodiment of the invention, a plurality of first ribs and second ribs are arranged at one end of the sampling piece, which is positioned in the drainage channel;

each first rib is arranged at intervals along the length direction of the sampling piece, and each second rib is connected with two adjacent first ribs and is positioned between the two adjacent first ribs;

each first rib is in butt joint limit with the inner wall of the drainage channel, each second rib is spaced from the inner wall of the drainage channel, and a sample passing gap is formed between each second rib and the inner wall of the drainage channel.

In an embodiment of the invention, a groove is disposed on a side of each second rib facing away from the sampling member, and the groove is disposed along a length direction of the sampling member.

In an embodiment of the invention, each of the first ribs has an extension protruding from an end of the sampling member away from the transition channel;

the extension parts of the first ribs are enclosed to form a filtering space communicated with the sample passing gap.

In an embodiment of the present invention, the outer wall of each of the extending portions is provided with a third guiding surface, and the cross-sectional area of the extending portion gradually decreases from one end near the sampling member to one end far from the sampling member.

In an embodiment of the present invention, a cross-sectional area of an end of the sampling member located in the drainage channel gradually decreases from an end near the transition channel to an end far from the transition channel.

In an embodiment of the invention, an end of the sampling member away from the drainage channel extends into the cavity through the transition channel;

and a sampling groove is formed in one end, far away from the drainage channel, of the sampling piece.

In an embodiment of the invention, a sealing rib is arranged at the periphery of the communication part of the transition channel and the drainage channel, and the sealing rib is positioned in the transition channel and surrounds the side wall of the transition channel to form a sealing groove;

The main body is accommodated in and limited in the sealing groove near one end of the upper cover.

In an embodiment of the present invention, a fourth guiding surface is provided on an outer wall of the sealing rib, and a cross-sectional area of an end of the sealing rib near the drainage channel is larger than a cross-sectional area of an end of the sealing rib far away from the drainage channel.

In an embodiment of the present invention, a side wall of the sealing groove facing the sealing rib is provided with a clearance surface, and an inner width of an end of the sealing groove close to the drainage channel is smaller than an inner width of an end of the sealing groove far away from the drainage channel.

In an embodiment of the present invention, an inner wall of the transition channel is provided with an internal thread, an outer wall of the main body near one end of the upper cover is provided with an external thread, and the middle cover is screwed with the main body through cooperation of the internal thread and the external thread;

the inner width of the transition channel gradually increases from one end close to the drainage channel to one end far away from the drainage channel.

In an embodiment of the invention, a sealing column is arranged on the inner wall of the upper cover, and the sealing column is inserted into the sample injection channel and seals the sample injection channel;

and/or, the outer wall of the upper cover is provided with a glue breaking groove;

And/or the outer wall of the upper cover is provided with a rotation direction mark.

In an embodiment of the invention, a limiting boss is arranged on the outer wall of the main body, which is close to one end of the upper cover, and the end of the middle cover is in abutting limiting with the limiting boss.

In an embodiment of the invention, the bottom space of the cavity gradually contracts along a direction from the cavity opening of the cavity toward the bottom wall of the cavity.

In an embodiment of the invention, a supporting part is arranged at one end of the main body far away from the cavity opening of the accommodating cavity;

the supporting part is arranged on the periphery of the bottom space of the containing cavity in a surrounding mode, and a supporting plane is formed on one side, away from the cavity opening of the containing cavity, of the supporting part.

According to the technical scheme, the middle cover is arranged on the upper cover of the main body of the sample container, the upper cover is arranged on the middle cover, so that the middle cover is provided with the sample injection channel communicated with the cavity of the main body, the sample injection channel is arranged by covering the middle cover by the upper cover, and the sample injection channel is isolated and protected by the upper cover, so that suspended matters in the outside air are prevented from entering the cavity to pollute the sample. Meanwhile, a first limiting part and a first guiding part are arranged on the peripheral wall of the middle cover at intervals, so that the first guiding part is provided with a first guiding surface which is arranged facing the first limiting part and at least part of the surface of which is an inclined surface or an arc surface; the upper cover is provided with a second limiting part corresponding to the first limiting part, the second guiding part is arranged corresponding to the first guiding part, when the upper cover is assembled with the middle cover, the first limiting part is clamped with the second limiting part, the first guiding part is in butt joint with the second guiding part to limit, and the upper cover and the middle cover are mutually fixed. When the sample container is subjected to sample adding operation, the upper cover is rotated by a small margin, the second guide surface on the upper cover can move along the first guide surface with the high and low parts on the middle cover, the upper cover is jacked to move upwards relative to the middle cover, the second limiting part on the upper cover and the first limiting part on the middle cover are changed into a separation state from each other from a clamping state, the upper cover and the middle cover are separated, the sample injection channel on the middle cover is exposed after the upper cover is opened, and the sample can be added into the cavity of the main body through the sample injection channel. So, this sample container only need twist by a small margin and move the upper cover and can realize uncapping, and after the upper cover uncapped, can conveniently carry out the application of sample operation through the sampling channel of well lid again, can greatly promote the efficiency of carrying out the application of sample operation to sample container.

Drawings

In order to more clearly illustrate the embodiments of the present invention 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, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a sample container according to the present invention;

FIG. 2 is a cross-sectional view of the sample container of FIG. 1 taken along line A-A';

FIG. 3 is an enlarged view of the portion B of FIG. 2;

FIG. 4 is an exploded view of the sample container of FIG. 2;

FIG. 5 is an exploded view of the sample container of FIG. 1 from a perspective;

FIG. 6 is an enlarged view of the portion C of FIG. 5;

fig. 7 is a diagram of an exploded view of the sample container of fig. 1 from another perspective.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

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

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

In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. The meaning of "and/or", "and/or" as used throughout is intended to include three side-by-side schemes, for example "a and/or B", including a scheme, or B scheme, or a scheme where a and B meet at the same time. 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 invention.

The embodiment of the invention provides a sample container, and the sample container is shown in fig. 1, 2, 4 and 5, and comprises a main body 1, a middle cover 2 and an upper cover 3, wherein the main body 1 is provided with a containing cavity 1a capable of containing a sample and a cavity opening 1a1 communicated with the containing cavity 1 a; the middle cover 2 is arranged on the main body 1 and partially covers the cavity opening 1a1; the middle cover 2 is provided with a sample injection channel 2a communicated with the accommodating cavity 1a and the outside, the peripheral wall of the middle cover 2 is convexly provided with a first limiting part 211 and a first guiding part 212, and the first limiting part 211 is positioned between the first guiding part 212 and the communication part between the sample injection channel 2a and the outside; a first guide surface 2121 is formed on one side of the first guide portion 212 facing the first limiting portion 211, and at least part of the surface of the guide surface is in an inclined plane or an arc surface; the upper cover 3 is detachably arranged on the middle cover 2 and covers the sample injection channel 2a; the inner peripheral wall of the upper cover 3 is provided with a second limiting part 31 and a second guiding part 32, the second limiting part 31 is clamped with the first limiting part 211, and the second guiding part 32 is abutted and limited with the first guiding part 212; when the upper cover 3 rotates relative to the middle cover 2, the second guiding portion 32 moves along the guiding surface of the first guiding portion 212 and drives the first limiting portion 211 to disengage from the second limiting portion 31.

In this embodiment, the main body 1 may have a tubular or bottle-shaped structure, and has a cavity 1a capable of storing a sample, where the sample is not limited to a sample to be tested such as human blood, organ tissue fluid, and other body fluids, and further includes a detection reagent participating in a sample detection link; in addition, the main body 1 may be used for containing other liquids and solid-liquid mixtures besides the sample to be tested, and the sample objects that can be stored in the main body 1 are not limited herein.

The middle cover 2 is covered on the cavity opening 1a1 of the containing cavity 1a of the main body 1, and can be connected with the main body 1 in a detachable mode such as a screw connection mode, a clamping connection mode and the like. The middle cover 2 is positioned between the upper cover 3 and the main body 1, the middle cover 2 is provided with a part which is covered at the cavity opening 1a1 of the cavity 1a of the main body 1 and a part which extends into the inner cavity of the upper cover 3, and the middle cover 2 is provided with a sample injection channel 2a which is communicated with the outside and the cavity 1a of the main body 1. The upper cover 3 is arranged on the middle cover 2 in a covering way and covers the upper opening of the sample injection channel 2a so as to obstruct the communication between the sample injection channel 2a and the outside and ensure the tightness of the sample injection channel 2a and the cavity 1 a. As shown in fig. 1 and 5, the body 1 of the sample container is tubular, and the longitudinal cross-sectional shapes of the body 1 and the upper lid 3 are each U-shaped, and the middle lid 2 has a portion protruding toward the upper lid 3 and protruding into the inner cavity of the upper lid 3, and a portion covering the top end of the body 1.

The outer wall of the middle cover 2 is provided with a first limiting part 211 and a first guiding part 212, the first limiting part 211 and the first guiding part 212 can be arranged along the circumferential direction of the outer circumferential wall of the middle cover 2, and at this time, the whole of the first limiting part 211 and the first guiding part 212 is of an annular structure. The side wall of the inner cavity of the upper cover 3 is provided with a second limiting part 31 and a second guiding part 32, the second guiding part 32 can be arranged along the circumferential direction of the inner wall of the upper cover 3, at this time, the second guiding part 32 is of an annular structure, and the second limiting part 31 is of a bump, a block, an annular structure and the like. As shown in fig. 7, the second limiting portion 31 and the second guiding portion 32 are disposed at intervals, the second limiting portion 31 may be located on a side of the second guiding surface 321 of the second guiding portion 32 facing away from the opening of the upper cover 3, and the second guiding portion 32 may extend from an end of the inner wall of the upper cover 3 near the opening to an end far from the opening, and the second limiting portion 31 may also be disposed on the second guiding portion 32 and spaced from the second guiding surface 321 of the second guiding portion 32. As shown in fig. 5, the first limiting portion 211 and the first guiding portion 212 are arranged at intervals, a clamping groove is formed between the first limiting portion 211 and the first guiding portion 212, when the upper cover 3 is assembled with the middle cover 2, the upper cover 3 is pressed down, the second limiting portion 31 of the upper cover 3 moves down along the outer wall of the first limiting portion 211 of the middle cover 2, and the second limiting portion 31 of the upper cover 3 is finally clamped in the clamping groove, so that the upper cover 3 and the middle cover 2 are connected and fixed.

When the upper cover 3 is connected with the middle cover 2, the second guide part 32 on the side wall of the inner cavity of the upper cover 3 is in butt joint limit with the first guide part 212 on the outer wall of the middle cover 2; specifically, the first guide portion 212 has a first guide surface 2121 disposed facing the first limiting portion 211, the second guide portion 32 has a second guide surface 321 disposed opposite to the second limiting portion 31, at least part of the surface of the first guide surface 2121 is disposed in an inclined or cambered surface, for example, the first guide surface 2121 is in a zigzag shape, a wave shape, or the like, the shape and size of the second guide surface 321 are adapted to those of the first guide surface 2121, the first guide surface 2121 and the second guide surface 321 have continuous and alternating high-point portions and low-point portions, so that when the upper cover 3 is screwed to rotate relative to the lower cover, the first guide surface 2121 and the second guide surface 321 which are in contact move relatively, the second guide surface 321 drives the upper cover 3 to rise relative to the middle cover 2 under the guiding action of the first guide surface 2121 which is inclined or cambered surface and has a high-low portion, and the second limiting portion 31 is separated from the outer wall of the first limiting portion 211 until the first limiting portion 211 is separated from the second limiting portion 31 and separated from the middle cover 2. In order to improve the smoothness of the second limiting part 31 separating from the clamping groove when the upper cover 3 rotates, a guiding inclined plane or an arc surface can be arranged on the side wall of the clamping groove facing the first guiding surface 2121, so that the stopping effect of the side wall of the clamping groove on the second limiting part 31 is reduced.

In this embodiment, the main body 1 of the sample container is covered by the middle cover 2, the middle cover 2 is covered by the upper cover 3, so that the middle cover 2 has the sample injection channel 2a communicated with the cavity 1a of the main body 1, and the upper cover 3 covers the sample injection channel 2a of the middle cover 2, and the sample injection channel 2a is isolated and protected by the upper cover 3, so as to prevent suspended matters in the outside air from entering the cavity 1a to pollute the sample. Meanwhile, a first limiting part 211 and a first guiding part 212 are arranged on the peripheral wall of the middle cover 2 at intervals, so that the first guiding part 212 is provided with a first guiding surface 2121 which is arranged facing the first limiting part 211 and at least part of the surface of which is an inclined surface or an arc surface; the second limiting part 31 is arranged on the upper cover 3 corresponding to the first limiting part 211, the second guiding part 32 is arranged corresponding to the first guiding part 212, when the upper cover 3 is assembled with the middle cover 2, the first limiting part 211 and the second limiting part 31 are clamped, the first guiding part 212 and the second guiding part 32 are abutted and limited, and the upper cover 3 and the middle cover 2 are mutually fixed. When the sample container is subjected to sample loading operation, the second guide surface 321 on the upper cover 3 can be moved along the first guide surface 2121 with the high and low parts on the middle cover 2 by slightly rotating the upper cover 3, the upper cover 3 is jacked to move upwards relative to the middle cover 2, the second limiting part 31 on the upper cover 3 and the first limiting part 211 on the middle cover 2 are changed into a separation state from a clamping state, the upper cover 3 and the middle cover 2 are separated, the sample feeding channel 2a on the middle cover 2 is exposed after the upper cover 3 is opened, and the sample can be loaded into the accommodating cavity 1a of the main body 1 through the sample feeding channel 2 a. So, this sample container only need twist by a small margin upper cover 3 can realize uncapping, and after upper cover 3 uncapped, can conveniently carry out the application of sample operation through the sampling channel 2a of well lid 2 again, can greatly promote the efficiency of carrying out the application of sample operation to sample container.

In an embodiment of the present invention, as shown in fig. 5 and 7, the first limiting portion 211 is disposed along the circumferential direction of the outer wall of the middle cover 2; the cross-sectional area of the first stopper 211 gradually decreases from one end near the first guide 212 to one end far from the first guide 212; when the upper cover 3 is connected with the middle cover 2, the second limiting part 31 is in abutting limiting with one side of the first limiting part 211 facing the first guiding part 212.

In this embodiment, the first limiting portion 211 is a closed annular structure connected end to end, the first limiting portion 211 may be designed with equal width, so that the width of the first limiting portion 211 along the extending direction of the sample injection channel 2a is equal everywhere, and the first limiting portion 211 may be integrally formed with the middle cover 2. The annular structure design of the first limiting part 211 can enable the upper cover 3 to be rotationally adjusted to a plurality of positions and pressed down at a plurality of different angles, and the second limiting part 31 can be matched with the first limiting part 211 in a clamping manner, so that the multi-angle assembly of the upper cover 3 and the middle cover 2 is realized, and the cover sealing operation of the upper cover 3 is facilitated.

In this embodiment, the cross-sectional area of the first limiting portion 211 is designed to gradually decrease from one end close to the first guiding portion 212 to one end far away from the first guiding portion 212, so that the whole first limiting portion 211 is tapered, the outer peripheral wall of the first limiting portion 211 is configured to be tapered, so that when the upper cover 3 is assembled to the middle cover 2, the second limiting portion 31 can move down along the outer wall of the first limiting portion 211 and slightly laterally move under the action of the supporting force of the first limiting portion 211, the upper cover 3 expands slightly and receives gradually enhanced downward resistance, and until the second limiting portion 31 is clamped into the clamping groove between the first guiding portion 212 and the first limiting portion 211, the downward resistance received by the upper cover 3 disappears, so that not only the tightness of the upper cover 3 and the middle cover 2 in cooperation can be improved, but also the hand feeling during the manual sealing operation can be improved.

In addition, during the process of opening the cover, the upper cover 3 is rotated, the moment that the second limiting part 31 is separated from the clamping groove is acted by the strong extrusion force from the first limiting part 211 by virtue of the guiding cooperation of the first guiding surface 2121 and the second guiding surface 321, at this time, the equivalent acting force exerted by the first limiting part 211 on the upper cover 3 is upward, and as the second limiting part 31 moves up along the outer wall of the first limiting part 211, the acting force of the first limiting part 211 on the second limiting part 31 is weakened until the first limiting part 211 is separated from the second limiting part 31, the acting force of the first limiting part 211 on the second limiting part 31 disappears, and the acting force from the middle cover 2 exerted by the upper cover 3 also disappears. In this process, the personnel who operate the uncapping also can obviously feel that upper cover 3 is jacked and the jacking effort that upper cover 3 received is weakening gradually, so the structural design of first spacing portion 211 can greatly promote the closing cap of this sample container and uncap feel in this embodiment, improves user's use experience.

In an embodiment of the present invention, as shown in fig. 5 and 7, the second guide portion 32 is provided along the circumferential direction of the outer wall of the middle cap 2; the second guide portion 32 is formed with a second guide surface 321 on a side facing the first guide portion 212, the second guide surface 321 is provided in a wave shape, and a shape of the first guide surface 2121 of the first guide portion 212 matches a shape of the second guide surface 321 of the second guide portion 32.

In this embodiment, the first guide surface 2121 of the first guide portion 212 and the second guide surface 321 of the second guide portion 32 are all in a wavy arrangement, so that the first guide surface 2121 and the second guide surface 321 have high points and low points, similar to the peak and trough structure, and the first guide surface 2121 and the second guide surface 321 can be designed to be more gentle and not easy to form a stop surface, which is beneficial to improving the smoothness of the second guide surface 321 when moving relative to the first guide surface 2121 and improving the uncapping experience of the user.

In an embodiment of the present invention, as shown in fig. 2, 4 and 5, the middle cover 2 includes a drainage section 21 and a cover section 22 connected to each other; the drainage section 21 is provided with a drainage channel 21a, the cover section 22 is provided with a transition channel 22a communicated with the cavity 1a, and the transition channel 22a is communicated with the drainage channel 21a to form a sample introduction channel 2a; the sealing cover section 22 is detachably connected with the main body 1, the drainage section 21 is detachably connected with the upper cover 3, and the upper cover 3 covers the drainage channel 21a.

In this embodiment, the drainage section 21 and the cover section 22 are two sections connected to the upper cover 3, the drainage section 21 and the cover section 22 can be integrally formed, the cross-sectional area of the drainage section 21 is smaller than that of the middle cover 2, the cover section 22 is adapted to the main body 1 and has a wider width relative to the drainage section 21, and the drainage section 21 is a contracted section structure of the middle cover 2 relative to the cover section 22, so that the middle cover 2 is in a structure with a narrower top and a wider bottom. In this way, on the one hand, the volume of the middle cover 2 can be reduced, which is beneficial to compressing the whole volume of the sample container; on the other hand, the drainage channel 21a in the drainage section 21 is also made relatively narrower, so that the risk of leakage of the sample in the sample container is reduced, and the control of the sample flow is facilitated, and more accurate sample feeding and sample discharging operations are performed through the drainage channel 21a.

The drainage section 21 extends into the inner cavity of the upper cover 3, a drainage channel 21a extending along the height direction of the drainage section 21 is arranged in the drainage section 21, and the outer wall of the drainage section 21 is provided with the first limiting part 211 and the first guiding part 212. The drainage segment 21 is detachably connected with the upper cover 3 through the clamping fit of the first limiting part 211 and the second lower limiting part and the abutting limiting fit of the first guide surface 2121 and the second guide surface 321. The sealing cover section 22 is internally provided with a transition channel 22a communicated with the drainage channel 21a, the transition channel 22a is also communicated with the containing cavity 1a through a cavity opening 1a1 of the containing cavity 1a, and the sealing cover section 22 is detachably connected with the main body 1 in a threaded connection, a clamping connection and the like manner so as to improve the dismounting efficiency of the middle cover 2 and the main body 1 and facilitate the sealing cover and uncovering operation of the sample container.

In an embodiment of the present invention, as shown in fig. 5 to 7, the sample container further includes a sampling member 4; one end of the sampling piece 4 passes through the transition channel 22a and is inserted into the drainage channel 21a, a sampling gap is formed between one end of the sampling piece 4 positioned in the drainage channel 21a and the inner wall of the drainage channel 21a, and the sampling gap is communicated with the transition channel 22 a.

In this embodiment, the sampling member 4 is used for rapid sampling when the middle cover 2 is opened, the sampling member 4 is inserted into the drainage channel 21a and connected with the inner wall of the drainage channel 21a in an interference fit, a clamping connection or the like, and when the middle cover 2 is opened, the whole of the middle cover 2 and the upper cover 3 can be used as an operation handle of the sampling member 4, so that a user can conveniently and manually operate the sampling. The sampling member 4 may be a sampling spoon, a sampling stick, or the like, which is not limited herein.

The sampling piece 4 is located one end in the drainage channel 21a and is formed with the clearance that crosses the appearance that communicates with transition channel 22a between the inner wall of drainage channel 21a, so can open upper cover 3 to add the sample through the last opening of sampling channel 2a, make the sample get into holding chamber 1a along sampling channel 2a and clearance that crosses in the appearance, promote the efficiency of application of sample operation. In addition, through designing and controlling the width of the sample passing gap between the outer wall of the sampling piece 4 and the inner wall of the drainage channel 21a, the particle impurities with the diameter larger than the width of the sample passing gap can not enter the containing cavity 1a through the sample passing gap, the filtration of large particle impurities is realized, the large particle impurities after filtration can be poured through the upper opening of the sample feeding channel 2a, and the purity of the sample stored in the sample container is improved.

In an embodiment of the present invention, as shown in fig. 5 and 6, the end of the sampling member 4 located in the drainage channel 21a is provided with a plurality of first ribs 41 and second ribs 42; each first rib 41 is arranged at intervals along the length direction of the sampling member 4, and each second rib 42 is connected with two adjacent first ribs 41 and is positioned between the two adjacent first ribs 41; each first rib 41 is in abutting limit with the inner wall of the drainage channel 21a, each second rib 42 is spaced from the inner wall of the drainage channel 21a, and a sample passing gap is formed between each second rib 42 and the inner wall of the drainage channel 21 a.

In this embodiment, the thickness of the second rib 42 is smaller than that of the first rib 41, and the distance between the side of the second rib 42 facing away from the sampling member 4 and the inner wall of the drainage channel 21a is smaller than that between the side of the first rib 41 facing away from the sampling member 4 and the inner wall of the drainage channel 21a, so that the sample-passing gap is formed between the second rib 42 and the inner wall of the drainage channel 21a when the first rib 41 is limited by abutting against the inner wall of the drainage channel 21 a. The second ribs 42 may be disposed along a direction perpendicular to the extending direction of the first ribs 41, and one or a plurality of second ribs 42 disposed in parallel may be disposed between two adjacent first ribs 41. On the one hand, the second rib 42 can be used as a reinforcing structure, and each second rib 42 is connected with and supports two adjacent first ribs 41 so as to assist in improving the structural strength of the first rib 41, ensure that the first rib 41 can keep tight limit fit with the inner wall of the drainage channel 21a, and improve the connection reliability of the sampling piece 4 and the middle cover 2; the second ribs 42 can be used as a filtering structure on the other hand, and the second ribs 42 can prevent large particle impurities from entering the sample passing gap and the accommodating cavity 1a so as to improve the purity of the sample stored in the sample container.

In an embodiment of the present invention, as shown in fig. 5 and 6, a groove 42a is disposed on a side of each second rib 42 facing away from the sampling member 4, and the groove 42a is disposed along the length direction of the sampling member 4.

In this embodiment, the grooves 42a are used for guiding the liquid component in the liquid sample or the solid-liquid mixed sample added into the sample introduction channel 2a, and the grooves 42a restrict the flow direction of the liquid component in the added sample, so that the liquid component in the added sample can flow into the cavity 1a as much as possible, and the retention of the liquid component in the drainage channel 21a is reduced. In addition, two or more second ribs 42 may be disposed between any two adjacent first ribs 41, each second rib 42 is provided with the above-mentioned groove 42a, each second rib 42 and the groove 42a formed thereon form a layer of filtering structure, the depths of the grooves 42a formed on each second rib 42 distributed vertically may be the same or different, so as to form a multi-layer filtering structure between two or more adjacent first ribs 41, and the space between two adjacent second ribs 42 may be used to accommodate the filtered large-particle impurities, so as to further improve the purity of the sample stored in the sample container, and retain and store the target liquid component in the added sample.

In an embodiment of the present invention, as shown in fig. 5 and 6, each of the first ribs 41 has an extension 411 protruding from an end of the sample member 4 away from the transition channel 22 a; the extension 411 of each first rib 41 encloses a filter space 4a communicating with the sample gap.

In this embodiment, the extending portions 411 of the first ribs 41 protrude from the top end surface of the sample piece 4, the above-mentioned filtering space 4a is formed between the extending portions 411, the filtering space 4a is communicated with the sample passing gap, and is used for primarily filtering the sample added into the sample feeding channel 2a and entering the sample passing gap, the filtered impurity particles will accumulate in the filtering space 4a, and the filtering space 4a is disposed corresponding to the upper opening of the sample feeding channel 2a, so that the impurity particles can be conveniently dumped and discharged through the upper opening of the sample feeding channel 2 a. The primary filtering structure of the filtering space 4a is further matched with the secondary filtering structure formed by the second ribs 42 and the grooves 42a, so that the two-stage filtering of the added sample can be realized, and particle impurities with different sizes in the added sample can be gradually filtered by the two-stage filtering structure, so that the purpose of purifying the sample in the sample container is achieved. The two-stage filtering structure in the embodiment is suitable for sample loading and filtering of solid particle-containing samples such as fecal samples.

In an embodiment of the present invention, as shown in fig. 5 and 6, the outer wall of each of the extending portions 411 is provided with a third guiding surface 412, and the cross-sectional area of the extending portion 411 gradually decreases from one end near the sampling member 4 to one end far from the sampling member 4.

In this embodiment, the third guiding surface 412 is an inclined surface or an outer convex arc surface, and the arrangement of the third guiding surface 412 makes the outer wall of the top end of the extension portion 411 of the first rib 41 form a chamfer structure, so, when the sampling member 4 is assembled into the drainage channel 21a, the assembling resistance of the sampling member 4 can be reduced by using the avoidance and guiding action of the third guiding surface 412, the smoothness of the installation of the sampling member 4 is improved, and the disassembly/assembly of the sampling member 4 on the middle cover 2 is facilitated.

In an embodiment of the present invention, as shown in fig. 5 and 6, the cross-sectional area of the end of the sampling member 4 located in the drainage channel 21a gradually decreases from the end near the transition channel 22a to the end far from the transition channel 22 a.

In this embodiment, through setting the one end that sampling piece 4 is located in drainage channel 21a to the structure that upper portion is wide down narrow, can promote the smoothness nature of sampling piece 4 when assembling to drainage channel 21a to along with the top of sampling piece 4 is deep into in the drainage channel 21a, the contact surface area of the outer wall of sampling piece 4 and the inner wall of drainage channel 21a is bigger and bigger, the outer wall of sampling piece 4 and the butt spacing of the inner wall of drainage channel 21a is inseparable, so is favorable to promoting the reliability of sampling piece 4 installation fixed on middle cover 2. The structure of the sampling member 4 having a wide upper portion and a narrow lower portion at one end thereof located in the drainage channel 21a may be realized by providing the first rib 41 in a wedge-shaped structure, which is not limited herein.

In an embodiment of the present invention, as shown in fig. 2, 5 and 7, an end of the sampling member 4 away from the drainage channel 21a extends into the cavity 1a through the transition channel 22 a; the end of the sampling member 4 remote from the drainage channel 21a is provided with a sampling groove 4b.

In this embodiment, the end of the sampling member 4 extending into the cavity 1a is provided with the sampling slot 4b, so that the bottom end of the sampling member 4 can extend into the sample in the bottom space of the cavity 1a, and a larger amount of sample sediment and larger particles than the sample discharged through the sample feeding channel 2a can be excavated through the sampling slot 4b when the middle cover 2 is opened, and the sample in the cavity 1a can be stirred by the sampling member 4 to be sampled more uniformly, so that the sampling efficiency is improved.

In an embodiment of the present invention, as shown in fig. 2, 4 and 7, a sealing rib 221 is disposed at a periphery of a portion where the transition channel 22a communicates with the drainage channel 21a, and the sealing rib 221 is located in the transition channel 22a and surrounds a side wall of the transition channel 22a to form a sealing groove 22b; one end of the main body 1 near the upper cover 3 is accommodated and limited in the sealing groove 22b.

In this embodiment, the sealing rib 221 is disposed around the connection portion between the drainage channel 21a and the transition channel 22a, and has a ring-shaped structure, and the sealing rib 221 is integrally located in the transition channel 22a of the cover section 22 and encloses with the inner peripheral wall of the transition channel 22a to form the sealing groove 22b. When the middle cover 2 is connected with the main body 1, the main body 1 is provided with a cavity opening 1a1, one annular end is inserted into an annular sealing groove 22b and is in sealing contact with the inner wall of the sealing groove 22b, the sealing groove 22b wraps the annular end of the main body 1 provided with the cavity opening 1a1, so that the sealing cover section 22 of the middle cover 2 can tightly cover the periphery of the cavity opening 1a1 of the main body 1, the upper cover 3 covers the upper opening of the sample injection channel 2a, the middle cover 2 and the upper cover 3 can be matched to reliably seal a container, the sample in the cavity 1a is prevented from volatilizing and leaking to change in quality, or external floaters enter the cavity 1a to pollute the sample, and the reliability of the sample storage of the sample container is improved.

In an embodiment of the present invention, as shown in fig. 2 to 4, the outer wall of the sealing rib 221 is provided with a fourth guiding surface 2211, and the cross-sectional area of the end of the sealing rib 221 near the drainage channel 21a is larger than the cross-sectional area of the end of the sealing rib 221 away from the drainage channel 21 a.

In this embodiment, the fourth guiding surface 2211 is formed on the side of the sealing rib 221 facing the inner peripheral wall of the transition channel 22a, the fourth guiding surface 2211 is disposed in an annular shape, and the fourth guiding surface 2211 is an inclined surface or a convex arc surface. The fourth guiding surface 2211 can guide movement of one end of the main body 1, which is provided with the cavity opening 1a1, when the middle cover 2 is assembled with the main body 1, so that resistance when the end of the main body 1 moves into the sealing groove 22b is reduced, smoothness when the middle cover 2 is assembled with the main body 1 is improved, and assembly of the middle cover 2 and the main body 1 is facilitated.

As shown in fig. 3, the fourth guiding surface 2211 may also include an upper vertical surface and a lower inclined surface, where the vertical surface and the inclined surface are connected, when the top end of the main body 1 moves along the inclined surface, the top end of the main body 1 expands slightly, until the top end of the main body 1 is separated from the inclined surface and slides to the bottom wall of the sealing groove 22b, and the top end of the main body 1 generates a tendency of inward contraction, so that the top end of the main body 1 clamps the sealing rib 221 and is clamped in the sealing groove 22b, thereby improving the tightness of the top end of the main body 1 abutting against the outer wall of the sealing rib 221, and improving the reliability of sealing the cavity 1a by the middle cover 2.

In an embodiment of the present invention, as shown in fig. 2 to 4, a side wall of the sealing groove 22b facing the sealing rib 221 is provided with a clearance surface 222, and an inner width of an end of the sealing groove 22b near the drainage channel 21a is smaller than an inner width of an end of the sealing groove 22b far from the drainage channel 21 a.

In this embodiment, the clearance surface 222 is an inclined surface or an outer convex arc surface, when the sealing rib 221 is accommodated and limited in the sealing groove 22b, the interference between the top end of the main body 1 and the vertical surface of the fourth guiding surface 2211 in the previous embodiment is L1, and L1 is less than or equal to 0.1mm and less than or equal to 0.3mm, for example, 0.2mm, and the design of the interference is favorable for improving the tightness of the abutting fit between the sealing rib 221 and the end of the main body 1, and improving the sealing effect of the middle cover 2 on the main body 1; a horizontal gap L2 exists between the sealing rib 221 and the clearance surface 222, the gap is a clearance space, when the top end of the main body 1 is inserted into the sealing groove 22b, the top end of the main body 1 is pressurized by the sealing rib 221, the top end of the main body 1 expands outwards and fills the clearance space to form secondary sealing, and at the moment, the outer wall of the top end of the main body 1 is abutted against the clearance surface 222, so that the sealing strength of the middle cover 2 to the main body 1 can be further improved. Wherein, in order to ensure that the clearance surface 222 can be tightly matched with the outer wall of the top end of the main body 1, L2 is more than or equal to 0.1mm and less than or equal to 0.3mm, for example, 0.2mm.

In an embodiment of the present invention, as shown in fig. 2 to 4, the inner wall of the transition channel 22a is provided with an internal thread 223, the outer wall of the end of the main body 1 near the upper cover 3 is provided with an external thread 11, and the middle cover 2 is screwed with the main body 1 through the cooperation of the internal thread 223 and the external thread 11; the inner width of the transition passage 22a gradually increases from the end near the drainage passage 21a to the end far from the drainage passage 21 a.

In the present embodiment, by setting the cover section 22 of the middle cover 2 to a structure with a narrow upper portion and a wide lower portion, the inner width of the transition passage 22a is gradually increased from one end close to the drainage passage 21a to one end far from the drainage passage 21 a: on one hand, the main body 1 can conveniently extend into the transition channel 22a through the wide opening at the bottom end of the sealing cover section 22 to realize the assembly of the main body 1 and the middle cover 2; on the other hand, the interval L3 between the screw teeth of the internal screw thread 223 on the middle cap 2 and the outer side wall of the main body 1 can be made different from the interval L4 between the screw teeth of the external screw thread 11 on the main body 1 and the inner side wall of the middle cap 2, so that the screw teeth on the middle cap 2 and the main body 1 and the screw teeth on the main body 1 are prevented from simultaneously contacting with the middle cap 2, the friction resistance when the middle cap 2 rotates relative to the main body 1 is reduced, and the smoothness of the sealing and the opening of the middle cap 2 is improved. Wherein the values of L3 and L4 are slightly staggered, and L3 is more than or equal to 0.3mm and less than or equal to 0.5mm, such as 0.4mm;0.1 mm.ltoreq.L4.ltoreq.0.3 mm, such as 0.2mm, and 0.1 mm.ltoreq.L3-L4.ltoreq.0.2 mm, such as |L3-L4|=0.1 mm.

In an embodiment of the present invention, as shown in fig. 5 and 7, a sealing post 33 is disposed on the inner wall of the upper cover 3, and the sealing post 33 is inserted into the sample injection channel 2a and seals the sample injection channel 2a; and/or, the outer wall of the upper cover 3 is provided with a glue breaking groove 3a; and/or, the outer wall of the upper cover 3 is provided with a rotation direction mark 34.

In this embodiment, when the inner wall of the upper cover 3 is provided with the sealing post 33, the sealing post 33 is inserted into the drainage channel 21a of the drainage section 21 of the middle cover 2, so as to seal the drainage channel 21a and the sample injection channel 2a, and the sealing post 33 may have a structure with a wide upper part and a narrow lower part, so that when the sealing post 33 is in plug-in fit with the drainage channel 21a, the outer wall of the sealing post 33 and the inner wall of the drainage channel 21a can be in interference fit with each other along with the penetration of the sealing post 33 into the drainage channel 21a, thereby improving the tightness of the contact between the outer wall of the sealing post 33 and the inner wall of the drainage channel 21a, and improving the tightness of the sealing post 33 to the sample injection channel 2 a.

When upper cover 3 is equipped with broken glue groove 3a, broken glue groove 3a can be hemispherical cell body structure, and it is used for as the glue feeding point when upper cover 3 injection moulding to runner breaking and leading to the glue solution protrusion of partial injection in upper cover 3's surface when can preventing upper cover 3 injection moulding, appear influencing sample container outward appearance aesthetic feeling and the poor problem of actual use feel. To ensure the above effect of the breaking groove 3a, the depth of the breaking groove 3a1b is 0.10mm or more and 0.5mm or less, for example, the depth of the breaking groove 3a1b is 0.35mm.

When the outer wall of the upper cover 3 is provided with the turning direction mark 34, the turning direction mark 34 can be a raised arrow mark or a groove arrow mark arranged on the top end surface of the upper cover 3, and the turning direction mark 34 is annularly arranged on the periphery of the glue breaking groove 3a and is used for indicating the turning direction of the cover opening operation of the upper cover 3, so that a user can conveniently perform the cover opening operation.

In an embodiment of the present invention, as shown in fig. 4 and 5, the outer wall of the main body 1 near one end of the upper cover 3 is provided with a limiting boss 12, and the end of the middle cover 2 abuts against the limiting boss 12 to limit.

In this embodiment, the limiting stand has a surface facing the middle cap 2 and disposed in a plane, when the middle cap 2 is assembled onto the main body 1 by the fit of the internal thread 223 and the external thread 11, the bottom end of the middle cap 2 is made to approach and abut against the limiting boss 12 along with the rotation of the middle cap 2, and by means of the limiting action of the above-mentioned surface facing the middle cap 2 and disposed in a plane of the limiting boss 12, the position of the middle cap 2 can be corrected, preventing the middle cap 2 from being distorted due to the existence of L3 and L4 and the deformation of the middle cap 2 in the above-mentioned embodiments, and ensuring the reliability of the assembly connection of the middle cap 2 and the main body 1 and the tightness of the middle cap 2 to the main body 1.

In an embodiment of the present invention, as shown in fig. 2 and 4, the bottom space of the cavity 1a gradually contracts along the direction of the cavity opening 1a1 of the cavity 1a toward the bottom wall of the cavity 1 a.

In this embodiment, through designing the bottom space of holding chamber 1a into the space structure of back taper, can promote the liquid level of holding chamber 1a in the sample under the certain circumstances of the sample stock in the container chamber, when conveniently taking a sample, also can dilute the sample more effectively to, the interval between the lateral wall of the peripheral wall of sampling piece 4 and the bottom space of holding chamber 1a also is more suitable for sampling piece 4 stirring and mixing sample, is favorable to promoting the efficiency of sample sampling and mixing.

In an embodiment of the present invention, a supporting portion 13 is disposed at an end of the main body 1 away from the cavity opening 1a1 of the cavity 1a as shown in fig. 2, 4 and 7; the supporting portion 13 is disposed around the bottom space of the cavity 1a, and a supporting plane is formed on a side of the supporting portion 13 away from the cavity opening 1a1 of the cavity 1 a.

In this embodiment, the supporting portion 13 is an annular structure disposed around the bottom space of the cavity 1a, which isolates and protects the sample in the bottom space of the cavity 1a, and the supporting portion 13 has a flat supporting plane, so that the sample container can stand on various carriers such as a laboratory table and a bracket, and the vertical design of the sample container is realized. For compressing the volume of the main body 1 and improving the utilization rate of the inner space formed by the enclosing of the supporting portion 13, the shortest distance between the bottom space of the cavity 1a and the supporting plane is greater than or equal to 1mm and less than or equal to 5mm, such as 2mm.

The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all the equivalent structural changes made by the description of the present invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.

Claims

1. A sample container, the sample container comprising:

2. The sample container according to claim 1, wherein the first stopper is provided along a circumferential direction of an outer wall of the middle cap;

3. The sample container according to claim 1, wherein the second guide portion is provided along a circumferential direction of an outer wall of the middle cap;

4. A sample container according to any one of claims 1 to 3, wherein the middle cap comprises a drainage section and a cap section connected;

5. The sample container of claim 4, wherein the sample container further comprises a sampling member;

6. The sample container of claim 5, wherein the end of the sampling member within the drainage channel is provided with a plurality of first ribs and second ribs;

7. The sample container of claim 6, wherein a groove is provided in a side of each of the second ribs facing away from the sampling member, the groove being provided along a length direction of the sampling member.

8. The sample container of claim 6, wherein each of the first ribs has an extension protruding from an end of the sampling member remote from the transition channel;

9. The sample container of claim 8, wherein the outer wall of each of the extensions is provided with a third guide surface, and the cross-sectional area of the extension decreases gradually from an end near the sampling member to an end far from the sampling member.

10. The sample container of claim 5, wherein the cross-sectional area of the end of the sampling member within the drainage channel decreases from an end proximal to the transition channel to an end distal from the transition channel.

11. The sample container of claim 5, wherein an end of the sampling member remote from the drainage channel extends through the transition channel into the cavity;

12. The sample container according to claim 4, wherein a sealing rib is arranged on the periphery of the connection part of the transition channel and the drainage channel, and the sealing rib is positioned in the transition channel and surrounds the side wall of the transition channel to form a sealing groove;

13. The sample container of claim 12, wherein the outer wall of the sealing rib is provided with a fourth guide surface, and the cross-sectional area of the sealing rib at the end near the drainage channel is larger than the cross-sectional area of the sealing rib at the end far from the drainage channel.

14. The sample container of claim 12, wherein a side wall of the sealing groove facing the sealing rib is provided with a clearance surface, and an inner width of an end of the sealing groove near the drainage channel is smaller than an inner width of an end of the sealing groove far away from the drainage channel.

15. The sample container according to claim 4, wherein an inner wall of the transition passage is provided with an inner thread, an outer wall of the main body near one end of the upper cover is provided with an outer thread, and the middle cover is screwed with the main body through the cooperation of the inner thread and the outer thread;

16. A sample container according to any one of claims 1 to 3, wherein a sealing post is provided on the inner wall of the upper cover, the sealing post being inserted into the sample introduction channel and sealing the sample introduction channel;

17. A sample container according to any one of claims 1 to 3, wherein the outer wall of the main body adjacent to one end of the upper cap is provided with a limit boss, and the end of the middle cap abuts against the limit boss to limit.

18. A sample container according to any one of claims 1 to 3, wherein the bottom space of the cavity tapers in the direction of the mouth of the cavity towards the bottom wall of the cavity.

19. A sample container as claimed in any one of claims 1 to 3, wherein the end of the body remote from the mouth of the cavity is provided with a support;