CN219458667U - Protection device, protection circuit and biological sample preparation device - Google Patents

Protection device, protection circuit and biological sample preparation device Download PDF

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Publication number
CN219458667U
CN219458667U CN202223427946.5U CN202223427946U CN219458667U CN 219458667 U CN219458667 U CN 219458667U CN 202223427946 U CN202223427946 U CN 202223427946U CN 219458667 U CN219458667 U CN 219458667U
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China
Prior art keywords
terminal
load
base
insulating
protection
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CN202223427946.5U
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Chinese (zh)
Inventor
兰全福
阳方义
黄包秀
李恩华
陈华贵
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Rwd Life Science Co ltd
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Rwd Life Science Co ltd
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Abstract

The embodiment of the utility model provides a protection device, which comprises: the metal pin comprises a first terminal, a first insulating piece and a second terminal, wherein the first insulating piece is coated on part of the outer surface of the first terminal, and the second terminal is coated on part of the outer surface of the first insulating piece, which is far away from the exposed first terminal; the base comprises a third terminal, a second insulating piece and a fourth terminal, wherein the third terminal, the second insulating piece and the fourth terminal form an insertion hole, the second insulating piece is coated on the outer surface of the third terminal, and the fourth terminal is coated on the outer surface of the second insulating piece. When the metal contact pin is inserted into the jack, the first terminal is contacted with the third terminal, the second terminal is contacted with the fourth terminal, one of the metal contact pin and the base is connected with the power supply and the other of the metal contact pin and the base is connected with the power supply to form a closed circuit, so that the short circuit protection of the closed circuit is realized, and the closed circuit can be formed through one contact pin and one jack, so that the device has a simple structure and is beneficial to miniaturization of the device.

Description

Protection device, protection circuit and biological sample preparation device
Technical Field
The utility model relates to the technical field of short-circuit protection, in particular to a protection device, a protection circuit and a biological sample preparation device.
Background
After the circuit is short-circuited, large current can be generated, components such as chips in the circuit are extremely damaged or the service life of the components is shortened, and the influence on the circuit is extremely large. Even more seriously, the entire circuit may fail, resulting in loss of device functionality and a safety risk to the user. Therefore, it is very necessary to short-circuit the circuit.
For devices requiring metal pins to be plugged to form a closed electrical circuit, the user may cause a short circuit either improperly or inadvertently. There are two methods of short-circuit protection in the prior art. One is to cover the exposed metal pins by an insulating part, and take down the exposed metal pins when the equipment is needed, but the operation steps are added for users, so that the equipment with the exposed metal pins is inconvenient to use; another is to design a protection circuit using circuit components, which is bulky and complex for a device in which a plurality of electrical circuits are present.
Disclosure of Invention
The embodiment of the utility model provides a protection device, which aims to solve the problems that a device which needs to be plugged by a metal pin to form a closed electric loop is easy to short-circuit and the equipment is miniaturized.
In a first aspect, there is provided a protection device comprising:
the metal pin (1), the metal pin (1) comprises a first terminal (11), a first insulating piece (12) and a second terminal (13), the first insulating piece (12) is coated on part of the outer surface of the first terminal (11), and the second terminal (13) is coated on part of the outer surface of the first insulating piece (12) far away from the exposed first terminal (11), so that the outer surface of the metal pin (1) is sequentially provided with the first terminal (11), the first insulating piece (12) and the second terminal (13);
the base (2), the base (2) includes third terminal (21), second insulating part (22) and fourth terminal (23), third terminal (21), second insulating part (22) and fourth terminal (23) form jack (24), second insulating part (22) cladding are in the surface of third terminal (21), fourth terminal (23) cladding is in the surface of second insulating part (22), so that the internal surface of jack (24) is third terminal (21), second insulating part (22) and fourth terminal (23) in proper order;
the metal contact pin (1) is inserted into the insertion hole (24), the first terminal (11) is contacted with the third terminal (21), the second terminal (13) is contacted with the fourth terminal (23), so that a closed circuit is formed when the first terminal (11) and the second terminal (13) are connected with a load, the third terminal (21) and the fourth terminal (23) are connected with a power supply, or the first terminal (11) and the second terminal (13) are connected with the power supply, and the third terminal (21) and the fourth terminal (23) are connected with a load.
In a second aspect, there is provided a protection circuit comprising: the power supply, the load and the protection device are connected between the first terminal (11) and the second terminal (13), and the power supply is connected between the third terminal (21) and the fourth terminal (23), so that a closed circuit is formed.
In a third aspect, there is provided a protection circuit comprising: the power supply, the load and the protection device are connected between the first terminal (11) and the second terminal (13), and the load is connected between the third terminal (21) and the fourth terminal (23), so that a closed circuit is formed.
In a fourth aspect, there is provided a biological sample preparation device comprising a housing, a plurality of motors, a plurality of experimental receptacles, a plurality of heating apparatuses, and a plurality of protection circuits as described above;
the motors and the power supply are arranged in the shell, and driving shafts of the motors are respectively connected with the experiment containers to drive the experiment containers to rotate;
the metal contact pin (1) and the load are arranged on the heating equipment, and the base (2) is arranged on the shell;
when the heating device is inserted into the base (2) and clamps the experimental container for heating, a closed circuit is formed.
According to the device for forming the closed electric loop by frequently inserting the metal pins, the first terminal and the second terminal on the metal pins are isolated through the first insulating piece, the third terminal and the fourth terminal which form the insertion holes on the base are isolated through the second insulating piece, the first terminal, the first insulating piece and the second terminal are sequentially arranged on the outer surface of the metal pins, the third terminal, the second insulating piece and the fourth terminal are sequentially arranged on the inner surface of the insertion holes, when the metal pins are inserted into the insertion holes, the first terminal is contacted with the third terminal, the second terminal is contacted with the fourth terminal, one of the metal pins and the base is connected with a power supply, and the other of the metal pins and the base is connected with the power supply, so that the closed electric loop is formed, the short-circuit protection of the closed electric loop is realized, and the closed electric loop can be formed through one pin and one insertion hole, so that the structure is simple, and the device miniaturization is facilitated.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1a is a schematic view of a metal pin according to a first embodiment of the present utility model;
FIG. 1b is a top view of a metal pin according to an embodiment of the present utility model;
FIG. 1c is a cross-sectional view of FIG. 1b along section line A1A 2;
FIG. 2a is a schematic view of a base according to a first embodiment of the present utility model;
FIG. 2b is a top view of a base according to a first embodiment of the present utility model;
FIG. 2c is a cross-sectional view of FIG. 2B along section line B1B 2;
FIG. 3a is a schematic view of a metal pin insertion base according to an embodiment of the present utility model;
FIG. 3b is a top view of a metal pin insertion base according to an embodiment of the present utility model;
FIG. 3C is a cross-sectional view of FIG. 3b along section line C1C 2;
FIG. 4 is a schematic view of a biological sample preparation device according to a third embodiment of the present utility model;
fig. 5 is a schematic view of a heating apparatus according to a third embodiment of the present utility model.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar modules or modules having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model. On the contrary, the embodiments of the utility model include all alternatives, modifications and equivalents as may be included within the spirit and scope of the appended claims.
According to the device for forming the closed electric loop by frequently inserting the metal pins, the first terminal and the second terminal on the metal pins are isolated through the first insulating piece, the third terminal and the fourth terminal which form the insertion holes on the base are isolated through the second insulating piece, the first terminal, the first insulating piece and the second terminal are sequentially arranged on the outer surface of the metal pins, the third terminal, the second insulating piece and the fourth terminal are sequentially arranged on the inner surface of the insertion holes, when the metal pins are inserted into the insertion holes, the first terminal is contacted with the third terminal, the second terminal is contacted with the fourth terminal, one of the metal pins and the base is connected with a power supply, and the other of the metal pins and the base is connected with the power supply, so that the closed electric loop is formed, the short-circuit protection of the closed electric loop is realized, and the closed electric loop can be formed through one pin and one insertion hole, so that the structure is simple, and the device miniaturization is facilitated.
Example 1
Fig. 1a is a schematic view of a metal pin according to an embodiment of the present utility model. Fig. 1b is a top view of a metal pin according to an embodiment of the present utility model. Fig. 1c is a cross-sectional view of fig. 1b along section line A1 A2. Fig. 2a is a schematic view of a base according to an embodiment of the utility model. Fig. 2b is a top view of a base according to an embodiment of the present utility model. Fig. 2c is a cross-sectional view of fig. 2B along section line B1B 2. With reference to fig. 1a to 2c, the protection device comprises a metal pin 1 and a base 2.
In the embodiment of the present utility model, the metal pin 1 includes a first terminal 11, a first insulating member 12 and a second terminal 13, which form a needle-like structure. The first terminal 11 and the second terminal 13 are conductors. The first insulating member 12 is wrapped on a part of the outer surface of the first terminal 11, so that a part of the first terminal 11 is exposed and a part of the first terminal is wrapped. The second terminal 13 is wrapped on a part of the outer surface of the first insulating member 12 far from the exposed first terminal 11, so that a part of the first insulating member 12 is exposed and a part of the first insulating member is wrapped. Thus, the outer surface of the metal pin 1 is a first terminal 11, a first insulating member 12 and a second terminal 13 in this order, the first insulating member 12 separating the first terminal 11 and the second terminal 13. The first terminal 11 and the second terminal 13 are elongated in an axial direction away from the exposed portion of the first terminal 11, and may be connected with other portions of the closed electrical circuit to be formed therebetween.
Preferably, the first terminal 11 comprises a first recess 111, the first recess 111 being adapted to receive the first insulating member 12 and the second terminal 13. The first insulating member 12 is located in the first groove 111 and covers a portion of the first terminal 11 along the first groove 111. Likewise, the first insulator 12 also includes a similar recess for receiving the second terminal 13. The second terminal 13 is located in the recess and covers a portion of the first insulating member 12 along the recess. Thereby making the outer surfaces of the metal pins 1 flush.
In the embodiment of the present utility model, the base 2 includes a third terminal 21, a second insulating member 22, and a fourth terminal 23. The third terminal 21 and the fourth terminal 23 are each ring-like conductors, and the third terminal 21, the second insulator 22, and the fourth terminal 23 form a jack 24. The second insulating member 22 is coated on the outer surface of the third terminal 21 and is higher than the third terminal 21 by a certain length. The fourth terminal 23 is coated on the outer surface of the second insulating member 22 and is higher than the second insulating member 22 by a certain length. Thus, the inner surface of the insertion hole 24 is the third terminal 21, the second insulating member 22, and the fourth terminal 23 in this order, and the second insulating member 22 separates the third terminal 21 and the fourth terminal 23. The third terminal 21 and the fourth terminal 23 are elongated in an axial direction away from the opening of the receptacle 24, between which other parts of the closed electrical circuit to be formed can be connected.
Preferably, the fourth terminal 23 includes a second recess 231, the second recess 231 for receiving the third terminal 21 and the second insulator 22. The second insulator 22 is located in the second recess 231. Likewise, the second insulator 22 also includes a similar recess for receiving the third terminal 21. Thereby making the inner surface of the receptacle 24 flush.
Fig. 3a is a schematic view of a metal pin insertion base according to an embodiment of the utility model. Fig. 3b is a top view of a metal pin insertion base according to an embodiment of the present utility model. Fig. 3C is a cross-sectional view of fig. 3b along section line C1C 2. As shown in fig. 3a, 3b and 3c, the metal pin 1 is inserted into the base 2, i.e., into the insertion hole 24, the first terminal 11 is in contact with the third terminal 21, and the second terminal 13 is in contact with the fourth terminal 23. At this time, a closed electric circuit may be formed when a load is connected between the first terminal 11 and the second terminal 13, a power supply is connected between the third terminal 21 and the fourth terminal 23, or a power supply is connected between the first terminal 11 and the second terminal 13, and a load is connected between the third terminal 21 and the fourth terminal 23. When the metal pin 1 is inserted into the insertion hole 24, the first insulating member 12 and the second insulating member 22 are axially opposed, preventing the first terminal 11 from contacting the fourth terminal 23. The first insulator 12 and the second insulator 22 avoid a short circuit of the closed electrical circuit and are compact and slim.
As an embodiment of the present utility model, the base 2 further includes a third insulating member 25, and the third insulating member 25 is coated on the outer surface of the fourth terminal 23. For devices where there are multiple jacks 24 and multiple closed electrical loops are required, in order to reduce the risk of short circuits between different jacks 24 caused by dropping conductors, the third insulating member 25 is further wrapped around part of the top of the fourth terminal 23, so that the distance from the fourth terminal 23 to the top of the jack 24 is a predetermined distance.
According to the device for forming the closed electric loop by frequently inserting the metal pins, the first terminal and the second terminal on the metal pins are isolated through the first insulating piece, the third terminal and the fourth terminal which form the insertion holes on the base are isolated through the second insulating piece, the first terminal, the first insulating piece and the second terminal are sequentially arranged on the outer surface of the metal pins, the third terminal, the second insulating piece and the fourth terminal are sequentially arranged on the inner surface of the insertion holes, when the metal pins are inserted into the insertion holes, the first terminal is contacted with the third terminal, the second terminal is contacted with the fourth terminal, one of the metal pins and the base is connected with a power supply, and the other of the metal pins and the base is connected with the power supply, so that the closed electric loop is formed, the short-circuit protection of the closed electric loop is realized, and the closed electric loop can be formed through one pin and one insertion hole, so that the structure is simple, and the device miniaturization is facilitated.
Example two
In the embodiment of the present utility model, the basic structure of the protection device included in the protection circuit is the same as that of the first embodiment, and the same reference numerals as those of the first embodiment are used for each component that is the same as that of the first embodiment, including all the features described in the first embodiment, and are not repeated herein.
As an embodiment of the present utility model, the protection circuit includes a power supply, a load, and the protection device described in the first embodiment, the load is connected between the first terminal 11 and the second terminal 13, and the power supply is connected between the third terminal 21 and the fourth terminal 23, so that a closed circuit is formed.
As another embodiment of the present utility model, the protection circuit includes a power supply, a load, and the protection device of the first embodiment, the power supply is connected between the first terminal 11 and the second terminal 13, and the load is connected between the third terminal 21 and the fourth terminal 23, so as to form a closed circuit.
According to the device for forming the closed electric loop by frequently inserting the metal pins, the first terminal and the second terminal on the metal pins are isolated through the first insulating piece, the third terminal and the fourth terminal which form the insertion holes on the base are isolated through the second insulating piece, the first terminal, the first insulating piece and the second terminal are sequentially arranged on the outer surface of the metal pins, the third terminal, the second insulating piece and the fourth terminal are sequentially arranged on the inner surface of the insertion holes, when the metal pins are inserted into the insertion holes, the first terminal is contacted with the third terminal, the second terminal is contacted with the fourth terminal, one of the metal pins and the base is connected with a power supply, and the other of the metal pins and the base is connected with the power supply, so that the closed electric loop is formed, the short-circuit protection of the closed electric loop is realized, and the closed electric loop can be formed through one pin and one insertion hole, so that the structure is simple, and the device miniaturization is facilitated.
Example III
In many experiments in biology, it is often necessary to simulate the body temperature of an organism or to maintain a specific temperature during the preparation of a biological sample in order to facilitate the performance of the biological experiment. But also requires that the individual experimental containers be heated while not affecting other operations of the biological assay.
Such as in the preparation of single cell suspensions, the operations of cutting, milling tissue, etc., are performed in the laboratory vessels while the biological sample in each of the laboratory vessels is maintained at a different specific temperature by a heating device. In this process, the maintained temperature cannot fluctuate excessively, otherwise, the biological sample may be denatured, and the result of the biological experiment may be affected. Therefore, the heating device can heat, and the temperature of the experimental container needs to be sensed in real time and fed back to a controller in the device to adjust the heating power so as to realize stable heating. After the single cell suspension is prepared, the heating device and the experimental container are required to be detached, and the single cell suspension in the experimental container is poured out. The next time single cell suspension preparation begins, the heating apparatus and the laboratory vessel are reloaded onto the apparatus. Therefore, the heating device needs to adapt to the usage scenario of repeated plugging and unplugging.
Fig. 4 is a schematic view of a biological sample preparation device according to a third embodiment of the present utility model. Fig. 5 is a schematic view of a heating apparatus according to a third embodiment of the present utility model. As shown in fig. 4 and 5, the biological sample preparation device includes a housing, a plurality of motors, a plurality of experimental containers, a plurality of heating apparatuses, and a plurality of protection circuits (not shown in the drawings) described in the second embodiment. In the embodiment of the present utility model, the structure of the protection circuit is the same as that of the embodiment, including all the features described in the second embodiment, and will not be described herein.
In the embodiment of the utility model, a plurality of motors and power supplies are arranged in a shell, and driving shafts of the motors and the power supplies are respectively connected with a plurality of experimental containers for preparing single-cell suspension to drive the experimental containers to rotate. A plurality of metal pins 1 and a load are provided to the heating apparatus, and a plurality of bases 2 are provided to the housing and connected to the power supply. One heating device corresponds to two metal pins 1 and two protection circuits. Each heating device was inserted into the base 2 and clamped to the test vessel for heating, forming two closed electrical loops. The load of a protection circuit is a heating film and is used for heating the experimental container clamped by the heating device. The load of the other protection circuit is a temperature sensor and is used for measuring the temperature of the experimental container clamped by the heating equipment. No power supply is arranged on the heating equipment, and even if the metal contact pin 1 is exposed, the risk of short circuit caused by short circuit of the first terminal 11 and the second terminal 13 due to improper use of a user is avoided.
Preferably, a guiding mark is arranged on the heating device to guide the metal pins 1 to align with the insertion holes 24 of the base 2 so as to load the heating device and avoid collision deformation of the metal pins 1.
In an embodiment of the utility model, the biological sample preparation device further comprises a microcontroller. The microcontroller controls the heating films respectively according to the temperatures measured by the temperature sensors, so that biological samples in the experimental containers can be stably maintained at the same or different specific temperatures.
According to the device for forming the closed electric loop by frequently inserting the metal pins, the first terminal and the second terminal on the metal pins are isolated through the first insulating piece, the third terminal and the fourth terminal which form the insertion holes on the base are isolated through the second insulating piece, the first terminal, the first insulating piece and the second terminal are sequentially arranged on the outer surface of the metal pins, the third terminal, the second insulating piece and the fourth terminal are sequentially arranged on the inner surface of the insertion holes, when the metal pins are inserted into the insertion holes, the first terminal is contacted with the third terminal, the second terminal is contacted with the fourth terminal, one of the metal pins and the base is connected with a power supply, and the other of the metal pins and the base is connected with the power supply, so that the closed electric loop is formed, the short-circuit protection of the closed electric loop is realized, and the closed electric loop can be formed through one pin and one insertion hole, so that the structure is simple, and the device miniaturization is facilitated.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A protective device, comprising:
the metal pin (1), the metal pin (1) comprises a first terminal (11), a first insulating piece (12) and a second terminal (13), the first insulating piece (12) is coated on part of the outer surface of the first terminal (11), and the second terminal (13) is coated on part of the outer surface of the first insulating piece (12) far away from the exposed first terminal (11), so that the outer surface of the metal pin (1) is sequentially the first terminal (11), the first insulating piece (12) and the second terminal (13);
the base (2), base (2) include third terminal (21), second insulating part (22) and fourth terminal (23), third terminal (21), second insulating part (22) with fourth terminal (23) form jack (24), second insulating part (22) cladding in the surface of third terminal (21), fourth terminal (23) cladding in the surface of second insulating part (22), so that the internal surface of jack (24) is in proper order third terminal (21), second insulating part (22) and fourth terminal (23);
the metal contact pin (1) is inserted into the jack (24), the first terminal (11) is in contact with the third terminal (21), the second terminal (13) is in contact with the fourth terminal (23), so that a closed circuit is formed when a load is connected between the first terminal (11) and the second terminal (13), a power supply is connected between the third terminal (21) and the fourth terminal (23), or a power supply is connected between the first terminal (11) and the second terminal (13), and a load is connected between the third terminal (21) and the fourth terminal (23).
2. The protection device according to claim 1, wherein,
the first terminal (11) comprises a first groove (111), the first groove (111) is used for accommodating the first insulating piece (12) and the second terminal (13) so that the outer surfaces of the metal pins (1) are flush;
the fourth terminal (23) comprises a second recess (231), the second recess (231) being adapted to receive the third terminal (21) and the second insulator (22) such that the inner surface of the receptacle (24) is flush.
3. The protection device according to claim 1 or 2, characterized in that the base (2) further comprises a third insulation element (25), the third insulation element (25) being wrapped around the outer surface of the fourth terminal (23).
4. A protection device according to claim 3, characterized in that the third insulating member (25) is further coated on a part of the top of the fourth terminal (23) so that the distance from the fourth terminal (23) to the top of the jack (24) is a predetermined distance.
5. Protection circuit, characterized in that it comprises a supply source, a load and a protection device according to any of claims 1-4, the load being indirect between the first terminal (11) and the second terminal (13), the supply source being indirect between the third terminal (21) and the fourth terminal (23), forming a closed circuit.
6. Protection circuit, characterized in that it comprises a supply source, a load and a protection device according to any of claims 1-4, the load being formed between the first terminal (11) and the second terminal (13) and between the supply source, the third terminal (21) and the fourth terminal (23), forming a closed circuit.
7. A biological sample preparation device comprising a housing, a plurality of motors, a plurality of test receptacles, a plurality of heating devices, and a plurality of protection circuits according to claim 5;
the motors and the power supply are arranged in the shell, and driving shafts of the motors are respectively connected with the experiment containers to drive the experiment containers to rotate;
the metal contact pin (1) and the load are arranged on heating equipment, and the base (2) is arranged on the shell;
and the heating equipment is inserted into the base (2) and clamps the experimental container to heat so as to form a closed circuit.
8. Biological sample preparation device according to claim 7, characterized in that a guiding marking is provided on the heating means to guide the metal pins (1) into alignment with the receptacles (24) of the base (2).
9. The biological sample preparation device of claim 7, wherein the load is a heating film that heats the test vessel.
10. The biological sample preparation device of claim 7, wherein the load is a temperature sensor and the test receptacle is subjected to temperature measurement.
CN202223427946.5U 2022-12-21 2022-12-21 Protection device, protection circuit and biological sample preparation device Active CN219458667U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202223427946.5U CN219458667U (en) 2022-12-21 2022-12-21 Protection device, protection circuit and biological sample preparation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202223427946.5U CN219458667U (en) 2022-12-21 2022-12-21 Protection device, protection circuit and biological sample preparation device

Publications (1)

Publication Number Publication Date
CN219458667U true CN219458667U (en) 2023-08-01

Family

ID=87414917

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202223427946.5U Active CN219458667U (en) 2022-12-21 2022-12-21 Protection device, protection circuit and biological sample preparation device

Country Status (1)

Country Link
CN (1) CN219458667U (en)

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