Technical unlocking lock cylinder biological material evidence extraction device

Abstract

The utility model discloses a technical unlocking lock cylinder biological material evidence extracting device which comprises a storage mechanism, the storage mechanism comprises a material storage bottle used for storing cell enrichment liquid, and a threaded connector is installed on the side face of the material storage bottle. And the conveying mechanism is used in cooperation with the storage mechanism and comprises a threaded connecting base, a conveying channel matched with the threaded connector is installed on the side face of the threaded connecting base, and clamping grooves are formed in one side of the top and one side of the bottom of the threaded connecting base correspondingly. According to the utility model, the flat sheet design and the flocking wiping technology are adopted, and the cell enrichment liquid filled inside is combined, so that the extraction efficiency of biological material evidences is greatly improved, all potential biological material evidences inside the lock cylinder can be fully covered and effectively extracted, and when in use, an operator only needs to insert the head of the device into the lock cylinder, so that the operation is simple and convenient. The handle part is extruded to enable the enrichment liquid to seep and infiltrate the flocking layer, and then wiping is performed to complete extraction of the biological material evidence, so that the operation is simple, convenient and efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of biological evidence collection, in particular to a biological evidence extraction device for a technical unlocking lock core. Background Art

[0002] With the development of lock technology, the criminals' unlocking methods are also constantly changing. Although traditional methods of burglary such as prying doors and breaking windows still exist to a certain extent, the number of cases has decreased year by year. However, theft cases using technical means to unlock are on the rise, which has become a difficulty for technicians to conduct on-site investigations and collect evidence. The difficulty of technical unlocking cases lies in the fact that the suspects use professional tools and techniques to quickly open the door lock and commit theft without destroying the lock structure. In such cases, the difficulty of extracting biological evidence at the scene has increased significantly due to the concealed methods of committing the crime and the lack of obvious on-site rummaging.

[0003] Existing lock core biological evidence extraction technologies mainly rely on the following methods:

[0004] Endoscopic observation method: After removing the lock core, observe the traces inside the lock core through an endoscope and try to extract trace biological evidence. The main problem with this method is that it requires destroying the lock structure and the extraction process is complicated, making it difficult to be widely used in actual investigations.

[0005] Flocking wiping method: Use a flocking cotton swab to wipe the inside of the lock core, and extract trace biological evidence through the biological enrichment liquid on the wiping material. This method is inefficient and does not fully cover the complex structure inside the lock core, which is easy to miss key evidence.

[0006] Chemical solution immersion method: The lock core is immersed in a specific chemical solution, the biological evidence inside the lock core is separated by chemical reaction, and extracted by centrifugation and other means. This method also has the problems of complex operation and long time consumption, and the chemical solution may cause secondary contamination to the biological evidence.

[0007] There are many defects and deficiencies in the existing technology for extracting biological evidence from lock cores, which are mainly manifested as follows:

[0008] Low extraction efficiency:

[0009] For example, the endoscopic observation method: this method requires disassembling the lock core and observing and extracting traces through an endoscope. The operation is complicated and time-consuming, and it is impossible to quickly complete the extraction of biological evidence.

[0010] Flocking wiping method: Due to the complex internal structure of the lock core, the flocking wiping method is difficult to fully cover all parts of the lock core, resulting in incomplete extraction of biological evidence and low extraction efficiency.

[0011] Chemical solution immersion method: Although the biological evidence inside the lock core can be separated, the whole process is time-consuming and the use of chemical solutions increases the complexity of the extraction process.

[0012] Operational complexity:

[0013] For example, they are highly dependent on equipment: many existing methods, such as endoscopic observation, require professional equipment and highly qualified technicians to operate, which increases the difficulty of operation and the cost of investigation.

[0014] When disassembling the lock, some methods require removing the lock core for extraction, which is not only complicated to operate, but may also damage the lock structure and affect the subsequent use of the lock.

[0015] High risk of contamination:

[0016] Such as the chemical solution immersion method: the use of chemical solutions in the extraction process may cause secondary contamination to biological evidence and affect the accuracy of the test results.

[0017] Flocking wiping method: Due to the limitation of wiping materials, uneven wiping may occur, resulting in mixed contamination of biological evidence and affecting subsequent DNA testing results.

[0018] Equipment and technology limitations:

[0019] Such as high cost and equipment dependence: Existing technologies such as endoscopy rely on expensive professional equipment, which increases the cost of investigation. At the same time, operators need to have professional technical capabilities, which makes it difficult to train and retain technical personnel.

[0020] Equipment shortage: In some areas where technology and equipment are relatively backward, public security departments may lack the necessary professional equipment, limiting the widespread application of biological evidence extraction technology.

[0021] Extraction results are not satisfactory:

[0022] The internal structure of the lock core is complex and precise, and traditional extraction methods are difficult to fully cover all potential trace evidence sites, resulting in low DNA extraction rates and unsatisfactory extraction results. Utility Model Content

[0023] The purpose of the utility model is to provide a technical unlocking lock core biological evidence extraction device, which greatly improves the extraction efficiency of biological evidence by adopting a flat sheet design and flocking wiping technology, combined with an internally filled cell enrichment solution, to ensure that all potential biological evidence inside the lock core can be fully covered and effectively extracted. When in use, the operator only needs to insert the head of the device into the lock core, squeeze the handle to make the enrichment solution seep out and infiltrate the flocking layer, and then wipe to complete the extraction of biological evidence. The operation is simple and efficient.

[0024] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0025] A biological evidence extraction device for unlocking a lock cylinder, comprising:

[0026] A storage mechanism, the storage mechanism comprising a storage bottle for storing the cell-enriched solution, a threaded connector being installed on a side of the storage bottle;

[0027] A conveying mechanism used in cooperation with the storage mechanism, the conveying mechanism comprising a threaded connection seat, a conveying channel matching the threaded connection head is installed on the side of the threaded connection seat, and a card slot is opened on one side of the top and bottom of the threaded connection seat;

[0028] A collection mechanism for collecting evidence from a lock core, the collection mechanism comprising a flat flocking brush head, on which two symmetrically arranged clamping and fixing components are mounted.

[0029] The above-mentioned technology unlocks the lock core biological evidence extraction device, wherein the clamping and fixing component includes a mounting base fixedly connected to the flat flocking brush head, and the mounting base is slidably connected with a sliding latch matching the slot, and the sliding latch is sleeved with a sleeve spring.

[0030] In the above-mentioned device for extracting biological evidence from a lock core, the storage bottle is provided with an anti-slip cover that matches the storage bottle.

[0031] In the above-mentioned device for extracting biological evidence from a lock core, a sealing ring matching the threaded connector is fixedly connected to the inner wall of the threaded connector.

[0032] In the above-mentioned device for extracting biological evidence from a lock cylinder, the side surface of the threaded connector is sealed and connected to the threaded connector seat via the sealing ring.

[0033] In the above-mentioned device for extracting biological evidence from a lock core, a side surface of the flat flocking brush head is fixedly connected with a limiting ring matching the conveying channel.

[0034] In the above-mentioned device for extracting biological evidence from a lock core, the end of the flat flocking brush head is sealed and connected to the end of the conveying channel through the limiting ring.

[0035] The utility model has at least the following beneficial effects:

[0036] The flat flocking brush head is designed in a flat sheet shape, which is easy to insert into the lock cylinder and can cover and wipe all parts of the lock cylinder;

[0037] A layer of flocking material is designed on the outside of the flat flocking brush head, which has good adsorption capacity and can effectively capture trace biological evidence inside the lock core;

[0038] The specially formulated cell enrichment solution inside the storage bottle will seep out and soak the flat flocking brush head when the storage bottle is squeezed during collection, thus improving the efficiency and quality of extracting biological evidence. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0040] Figure 1 This is a schematic diagram of the structure of the biological evidence extraction device for unlocking a lock cylinder according to the utility model;

[0041] Figure 2 This is a schematic cross-sectional structure diagram of the biological evidence extraction device for unlocking a lock cylinder according to the utility model;

[0042] Figure 3 This is a schematic diagram of the structure of the storage mechanism in the biological evidence extraction device for unlocking a lock cylinder according to the utility model;

[0043] Figure 4 This is a schematic diagram of the structure of the conveying mechanism in the biological evidence extraction device for unlocking the lock cylinder of the utility model;

[0044] Figure 5 This is a schematic diagram of the structure of the collection mechanism in the biological evidence extraction device for unlocking a lock cylinder according to the utility model;

[0045] Figure 6 It is a structural schematic diagram of the clamping and fixing components in the biological evidence extraction device for unlocking the lock core according to the utility model.

[0046] Description of Figure Numbers:

[0047] 1. Storage mechanism; 2. Transport mechanism; 3. Collection mechanism;

[0048] 101. Storage bottle; 102. Threaded connector;

[0049] 1011, anti-slip cover;

[0050] 201, threaded connection seat; 202, conveying channel; 203, card slot;

[0051] 2011, sealing ring;

[0052] 301. Flat flocking brush head; 302. Snap-fit ​​fixing assembly;

[0053] 3011, limit ring;

[0054] 3021. Mounting seat; 3022. Sliding latch; 3023. Sleeve spring. DETAILED DESCRIPTION

[0055] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0056] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the embodiments of the present invention.

[0057] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be the internal connection of two components; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0058] Please refer to Figures 1 to 6 As shown, an embodiment of the utility model provides a device for extracting biological evidence from a lock core, comprising: a storage mechanism 1, a conveying mechanism 2 used in cooperation with the storage mechanism 1, and a collection mechanism 3 for obtaining evidence from the lock core;

[0059] Please refer to Figures 1 to 6 As shown, the storage mechanism 1 includes a storage bottle 101 for storing cell-enriched liquid, and a threaded connector 102 is installed on the side of the storage bottle 101;

[0060] Please refer to Figures 1 to 6 As shown, the conveying mechanism 2 includes a threaded connection seat 201, a conveying channel 202 matching the threaded connection head 102 is installed on the side of the threaded connection seat 201, and a card slot 203 is opened on one side of the top and bottom of the threaded connection seat 201;

[0061] Please refer to Figures 1 to 6 As shown, the collecting mechanism 3 includes a flat flocking brush head 301, and two symmetrically arranged clamping fixing components 302 are installed on the flat flocking brush head 301;

[0062] Please refer to Figures 1 to 6As shown, the clamping and fixing assembly 302 includes a mounting seat 3021 fixedly connected to the flat flocking brush head 301, a sliding clamping pin 3022 matching the clamping slot 203 is slidably connected to the mounting seat 3021, and a sleeve spring 3023 is sleeved on the sliding clamping pin 3022;

[0063] By adopting the above technical scheme, the flat flocking brush head 301 is designed to be a flat sheet, which is convenient for inserting into the lock core and can cover and wipe various parts inside the lock core; a layer of flocking material is designed on the outside of the flat flocking brush head 301, which has good adsorption capacity and can effectively capture trace biological evidence inside the lock core; the specially prepared cell enrichment solution inside the storage bottle 101, when the storage bottle 101 is squeezed during collection, the enrichment solution seeps out and infiltrates the flat flocking brush head 301, thereby improving the extraction efficiency and quality of biological evidence.

[0064] Please refer to Figures 1 to 6 As shown, the material storage bottle 101 is provided with an anti-slip cover 1011 matching the material storage bottle 101;

[0065] By adopting the above technical solution, the comfort of the user holding the storage bottle 101 is increased by providing the anti-slip cover 1011.

[0066] Please refer to Figures 1 to 6 As shown, a sealing ring 2011 matching the threaded connector 102 is fixedly connected to the inner wall of the threaded connector seat 201, and the side of the threaded connector head 102 is sealed and connected to the threaded connector seat 201 through the sealing ring 2011;

[0067] By adopting the above technical solution, the sealing performance of the connection between the threaded connection seat 201 and the threaded connection head 102 is increased by providing the sealing ring 2011 .

[0068] Please refer to Figures 1 to 6 As shown, a limiting ring 3011 matching the conveying channel 202 is fixedly connected to the side of the flat flocking brush head 301, and the end of the flat flocking brush head 301 is sealed and connected to the end of the conveying channel 202 through the limiting ring 3011;

[0069] By adopting the above technical solution, the stability of the connection between the flat flocking brush head 301 and the conveying channel 202 is increased by setting the limiting ring 3011;

[0070] It is worth noting that the cell enrichment solution in the storage bottle 101 is a mixture of water, ethanol and biologically active components, which ensures efficient extraction of biological evidence.

[0071] The working principle of the utility model is: insert the flat flocking brush head 301 into the lock core, squeeze the storage bottle 101, so that the enriched liquid inside the storage bottle 101 seeps out and infiltrates the flocking layer of the flat flocking brush head 301, wipe the inside of the lock core, take out the flat flocking brush head 301, and then pull the sliding pin 3022, and make the sliding pin 3022 disengage from the corresponding slot 203, so that the flat flocking brush head 301 can be easily disassembled, and then the biological evidence on the flocking layer can be easily amplified by PCR and analyzed by DNA.

[0072] The above description shows and describes several preferred embodiments of the utility model, but as before, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A biological evidence extraction device for unlocking a lock cylinder, characterized in that: include: A storage mechanism (1), the storage mechanism (1) comprising a storage bottle (101) for storing a cell-enriched liquid, a threaded connector (102) being installed on a side of the storage bottle (101); A conveying mechanism (2) used in conjunction with the storage mechanism (1), the conveying mechanism (2) comprising a threaded connection seat (201), a conveying channel (202) matching the threaded connection head (102) being installed on the side of the threaded connection seat (201), and a card slot (203) being provided on one side of the top and the bottom of the threaded connection seat (201); A collection mechanism (3) for collecting evidence from a lock core, the collection mechanism (3) comprising a flat flocking brush head (301), on which two symmetrically arranged clamping fixing components (302) are mounted.

2. The biological evidence extraction device for unlocking a lock cylinder according to claim 1, characterized in that: The snap-fit ​​fixing assembly (302) comprises a mounting seat (3021) fixedly connected to the flat flocking brush head (301), a sliding latch (3022) matching the latch slot (203) being slidably connected to the mounting seat (3021), and a sleeve spring (3023) being sleeved on the sliding latch (3022).

3. A biological evidence extraction device for unlocking a lock cylinder according to claim 2, characterized in that: The material storage bottle (101) is provided with an anti-slip cover (1011) matching the material storage bottle (101).

4. The biological evidence extraction device for unlocking a lock cylinder according to claim 3 is characterized in that: A sealing ring (2011) matching the threaded connector (102) is fixedly connected to the inner wall of the threaded connection seat (201).

5. The biological evidence extraction device for unlocking a lock cylinder according to claim 4 is characterized in that: The side surface of the threaded connector (102) is sealedly connected to the threaded connector seat (201) via the sealing ring (2011).

6. The biological evidence extraction device for unlocking a lock cylinder according to claim 5, characterized in that: A limiting ring (3011) matching the conveying channel (202) is fixedly connected to the side of the flat flocking brush head (301).

7. The biological evidence extraction device for unlocking a lock cylinder according to claim 6, characterized in that: The end of the flat flocking brush head (301) is sealed and connected to the end of the conveying channel (202) via the limiting ring (3011).

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