A case investigation evidence sample collection device

Abstract

The application provides a case investigation evidence sample collection device, and relates to the field of storage devices, characterized in that the device comprises a box body, storage drawers and a moving arm, the lower end of the box body is provided with universal wheels, the storage drawers and the moving arm structure are assembled on the box body, and the box body is convenient to carry and move, a plurality of groups of storage drawers are provided, the storage drawers are slidably connected to the box body through slide rails, the upper end of each storage drawer is provided with a sealing end cover, a gas feeding structure is arranged above each storage drawer, the lower end of the gas feeding structure is provided with a plurality of groups of pipelines connected to the air inlet channels of the storage drawers and compressors respectively, and hierarchical temperature control is realized, and the moving arm is located on the side of the box body away from the storage drawers and used for installing a clamping jaw or a camera monitoring device. The application has the following advantages: the device is convenient to carry and move, can be deployed outdoors, can be powered by other devices, samples can be independently stored in layers according to requirements, can be stored at different temperatures, and the overall storage quality is ensured.

Description

Technical Field

[0001] This invention relates to the field of storage devices, and in particular to a device for collecting evidence samples for case investigation. Background Technology

[0002] In criminal investigations, the scientific collection and proper preservation of physical evidence are crucial for ensuring its legal validity and supporting subsequent examination and identification. Traditional crime scene investigation methods often rely on multiple independent devices for evidence collection, preliminary examination, and classification and preservation, resulting in fragmented procedures and making it difficult to establish a complete evidence preservation chain in a timely manner. This approach has the following main shortcomings:

[0003] Existing evidence collection devices are relatively simple in function, mostly simple toolboxes or ordinary storage boxes, which can only achieve physical storage at room temperature and do not have active temperature control capabilities. For easily degradable biological samples such as blood, saliva, and tissue, they cannot provide a low-temperature preservation environment on-site, which can easily lead to sample decay, DNA degradation, and loss of evidentiary value.

[0004] Some portable storage boxes with refrigeration functions can only achieve overall cooling of a single temperature zone through their temperature control system. They cannot provide graded and differentiated temperature conditions for different types of samples. In addition, the air supply structure is simple, and the cold air distribution inside the box is uneven, which can easily lead to local temperature differences and affect the protection effect on temperature-sensitive samples.

[0005] On-site investigations often require simultaneous operations such as evidence collection, detailed magnification observation, image fixation, and classification and storage. Among existing equipment, mobile arms, video surveillance, operating tables, and lighting fixtures are mostly separate devices, which are inconvenient to carry and time-consuming to deploy, seriously affecting the efficiency of the investigation. Even some integrated mobile investigation platforms generally suffer from problems such as large size, insufficient battery life, poor battery heat dissipation, and poor system stability, making it difficult to operate reliably for a long time in outdoor sites without external power supply.

[0006] Therefore, there is an urgent need for a case investigation evidence sample collection device that can perform differentiated temperature storage management for different samples and is convenient for outdoor use, in order to solve the above problems. Summary of the Invention

[0007] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows:

[0008] A device for collecting evidence samples for case investigation includes a box, storage drawers, and a movable arm. The lower end of the box is equipped with casters for mounting the storage drawers and movable arm structure, facilitating overall carrying and movement. Multiple sets of storage drawers are arranged vertically inside the box. One end of the box has an opening. The storage drawers are slidably connected to the box via slide rails. The upper end of each storage drawer has a sealing end cap for sealing the interior. An air supply structure is provided above the storage drawers. The lower end of the air supply structure has multiple sets of pipes that are respectively connected to the air inlet channel of the storage drawers and a compressor to achieve graded temperature control.

[0009] The movable arm is located inside the box on the side away from the storage drawer. The movable arm includes a rotating base and an extension arm. One end of the movable arm has a mounting base for mounting a claw or video surveillance equipment.

[0010] As an improvement, one end of the housing is equipped with a push rod for assisting movement. The caster also includes a brake pedal, which is connected to the caster via a lug and a rotating pin structure. The pedal is an L-shaped plate, and when flipped downwards, one end of it will abut against the rubber tire, thereby restricting the tire's rotation.

[0011] As an improvement, the entire box is made of plastic and has an internal heat insulation layer. The upper surface of the box has a rigid reinforcing plate, which serves as an operating table. Symmetrical support legs are provided on both sides of the box. The support legs are rotatably connected to the box via a rotating base. One end of the support leg has a base plate with anti-slip texture on the lower end, which is used to support the box when the whole box is rotated and the base plate contacts the ground.

[0012] As an improvement, one side of the housing is equipped with a roller shutter panel to cover part of the moving arm chamber. The upper end of the housing is equipped with a lamp holder, which includes a rotating base and a support rod. The rotating base is rotatably connected to the housing, and the support rod is rotatably connected to the rotating base via a rotating pin for mounting lamps for illumination. One side of the housing is equipped with a control panel located above the storage drawer for inputting control signals to the control module.

[0013] As an improvement, the control module is located inside the housing and above the moving arm. One end of the module has wiring that connects to the control panel, compressor, and moving arm control respectively. A battery pack is located below the moving arm. An insulating mounting bracket is provided between the battery pack and the moving arm to separate the mounting chamber. One side of the battery pack has wiring that is electrically connected to the control module for power supply.

[0014] As an improvement, the battery pack includes battery cells and a heat sink. The battery cells are stacked, and the heat sink is located between the battery cell layers to diffuse the temperature inside the battery cells outward. The heat sink has cooling fans on both sides, one group blowing forward and the other group blowing backward, to accelerate the airflow inside the heat sink for cooling. The battery pack has a power connection module in the middle, which has multiple interfaces and voltage protection structure for connecting to external lines for power supply.

[0015] As an improvement, the storage drawer is a rectangular structure with an internal storage cavity. The upper edge of the storage drawer has a top air intake channel, which is arranged along the direction of the drawer's pull-out. The inner side of the top air intake channel has multiple sets of through holes facing the storage cavity. The air supply structure is connected to the top air intake channel through a flexible hose for uniform air supply.

[0016] As an improvement, the bottom of the storage drawer has multiple sets of slots for inserting and fixing the partition. The inner side of the panel adjacent to the top air intake channel of the storage drawer has a central air intake channel. There are multiple sets of central air intake channels, which are arranged parallel to the axis of the slots. One end of the central air intake channel has a line connected to the air supply structure. The inner side of the partition has a channel with a sealing ring near the central air intake channel for cooperating with the central air intake channel to transmit cold air. The channel has openings on both sides for sending cold air into both sides of the partition to achieve uniform cold air delivery inside the storage drawer.

[0017] As an improvement, the storage drawer is provided with an exhaust port at the bottom, which is located on one side of the box body and is used to discharge excess gas inside the box body and stabilize the internal pressure. A germicidal lamp is provided above the storage drawer, which is positioned facing the upper surface of the storage drawer. Its two ends are fixedly connected to the box body through connecting rods and are used for internal sterilization after cleaning and maintenance.

[0018] The beneficial effects of this invention are as follows: by integrating multiple sets of storage drawers, moving arms, control modules, battery packs, lamp holders and operating tables into a box with casters and push rods, the equipment is convenient to carry and transport, and the unfoldable legs ensure the overall stability of the equipment.

[0019] By setting up a compressor and air delivery structure, cold air can be delivered to each drawer structure through independent pipelines. At the same time, the internal channel structure of the storage drawer can further distribute the air evenly, ensuring the overall refrigeration effect.

[0020] By setting up a battery pack structure, power can be transmitted to the outside through lines, ensuring the normal use of other equipment outdoors. Attached Figure Description

[0021] Figure 1This is a front view of a case investigation evidence sample collection device according to the present invention;

[0022] Figure 2 This is a front sectional view of an evidence sample collection device for case investigation according to the present invention;

[0023] Figure 3 for Figure 2 Enlarged diagram of part A.

[0024] In the diagram: 1. Cabinet; 2. Support legs; 3. Casters; 4. Control panel; 5. Storage drawer; 6. Exhaust outlet; 7. Lamp holder; 8. Roller shutter; 9. Control module; 10. Compressor; 11. Moving arm; 12. Battery pack; 13. Power connection module; 14. Air supply structure; 15. Germicidal lamp; 16. Slide rail; 17. Partition; 18. Top air intake channel; 19. Middle air intake channel. Detailed Implementation

[0025] To make the content of this invention easier to understand, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0026] like Figures 1 to 3 As shown, a case investigation evidence sample collection device includes a housing 1, storage drawers 5, and a movable arm 11. The lower end of the housing 1 is equipped with casters 3 for assembling the storage drawers 5 and the movable arm 11, facilitating overall carrying and movement. Multiple sets of storage drawers 5 are vertically arranged inside the housing 1. One end of the housing 1 has an opening. The storage drawers 5 are slidably connected to the housing 1 via slide rails 16. The upper end of each storage drawer 5 has a sealing end cap for overall sealing. An air supply structure 14 is located above the storage drawers 5. The lower end of the air supply structure 14 has multiple sets of pipes connected to the air inlet channel of the storage drawers 5 and a compressor 10, respectively, to achieve graded temperature control. The movable arm 11 is located inside the housing 1 on the side away from the storage drawers 5. The movable arm 11 includes a rotating base and an extension arm. One end of the movable arm 11 has a mounting base for mounting grippers or video surveillance equipment. The storage drawer 5 is made of plastic, and its inner side of the protective panel structure exposed on one side of the box body 1 has a sealing ring. The sealing ring is used to cooperate with the pin structure to limit and close the position of the storage drawer 5.

[0027] One end of the housing 1 is equipped with a push rod for assisting movement. The caster wheel 3 also includes a brake pedal, which is connected to the caster wheel 3 via a lug plate and a rotating pin structure. The pedal is an L-shaped plate, and when flipped downwards, one end of it abuts against the rubber tire, thereby restricting tire rotation. A shock-absorbing damper can be installed at the connection between the caster wheel 3 and the housing 1 to reduce direct impact between the caster wheel 3 and the housing 1, preventing damage to the internal structure of the housing 1.

[0028] The housing 1 is made entirely of plastic and has an internal heat-insulating protective layer. The upper surface of the housing 1 has a rigid reinforcing plate serving as an operating surface. Symmetrical support legs 2 are provided on both sides of the housing 1, and these legs are rotatably connected to the housing 1 via rotating bases. One end of each support leg has a base plate with anti-slip textures on its lower end, allowing the base plate to contact the ground and support the housing 1 after rotation. A roller shutter 8 is located on one side of the housing 1 to cover part of the chamber of the moving arm 11. A lamp holder 7 is located at the top of the housing 1, comprising a rotating base and a support rod. The rotating base is rotatably connected to the housing 1, and the support rod is rotatably connected to the rotating base via a rotating pin, for mounting lamps for illumination. A control panel 4 is located on one side of the housing 1, above the storage drawer 5, for inputting control signals to the control module 9. The control panel 4 can be equipped with a remote control module and an antenna structure to achieve remote control, further facilitating the use of the equipment.

[0029] When in use, the operator moves the housing 1 to a safe position, rotates and unfolds the support legs 2, and positions them towards the storage drawer 5. At this point, the operator can pull out the storage drawer 5 to store the collected samples. During this process, the operator can adjust the operating power of the compressor 10 through the control panel 4, and adjust the temperature of each storage drawer 5 in conjunction with the fan equipment inside the delivery structure 14.

[0030] Once the housing 1 is in place, the lamp holder 7 can be rotated and its overall orientation adjusted to illuminate the corresponding lighting area. At this time, the roller shutter 8 can also be opened to unfold the moving arm 11, and the unfolding angle can be adjusted via the control panel 4 to adapt to the use of camera equipment or other equipment.

[0031] The control module 9 is located inside the housing 1 and above the moving arm 11. One end of the module has wiring that connects to the control panel 4, compressor 10, and moving arm 11. A battery pack 12 is located below the moving arm 11. An insulating mounting bracket separates the battery pack 12 from the moving arm 11, creating a mounting chamber. One side of the battery pack 12 has wiring that is electrically connected to the control module 9 for power supply. The battery pack 12 includes battery cells and a heat sink. The battery cells are stacked, and the heat sink is located between the cell layers to dissipate heat from the inside of the cells. Cooling fans are located on both sides of the heat sink, one blowing forward and the other backward, to accelerate airflow and cool the inside of the heat sink. A power connection module 13 is located in the middle of the battery pack 12. This module has multiple interfaces and voltage protection structures for external power supply. A charging interface is located at one end of the housing 1 near the battery pack 12, and the charging interface has a protective cover.

[0032] The storage drawer 5 is a rectangular parallelepiped with an internal storage cavity. A top air intake channel 18 is located at the upper edge of the drawer 5, extending along the drawer's pull-out direction. The inner side of the top air intake channel 18 has multiple through-holes facing the storage cavity. The air delivery structure 14 is connected to the top air intake channel 18 via a flexible hose for uniform air delivery. The bottom of the storage drawer 5 has multiple slots for inserting and fixing partitions 17. The inner side of the panel adjacent to the top air intake channel 18 has a central air intake channel 19, which is multiple in number and parallel to the slot axis. One end of the central air intake channel 19 is connected to the air delivery structure 14 via a wire. The inner side of the partition 17 has a channel with a sealing ring near the central air intake channel 19 for cold air transmission. The channel has openings on both sides to allow cold air to be delivered to both sides of the partition 17, achieving uniform cold air delivery inside the storage drawer 5. The storage drawer 5 has an exhaust vent 6 located at its bottom, on one side of the housing 1. This vent is used to expel excess gas from the inside of the housing 1 and stabilize the internal pressure. A germicidal lamp 15 is located above the storage drawer 5, facing the top surface of the drawer. Its two ends are fixedly connected to the housing 1 via connecting rods, and it is used for internal sterilization after cleaning and maintenance. The length of the storage drawer 5 is less than the extension length of the slide rail 16. The storage drawer 5 can extend completely beyond the outside of the housing 1 along the slide rail 16, facilitating the opening of the end cover and the storage of items. The slide rail 16 also includes guide posts for support.

[0033] When in use, the air supply structure 14 delivers cold air to each hose according to the preset temperature and corresponding flow rate. The cold air then flows along the hoses into the top air inlet channel 18 and the middle air inlet channel 19. The partition 17 structure can be freely assembled according to sample placement requirements. After the cold air exits through the middle air inlet channel 19, it moves along the internal pipes of the partition 17 and is evenly dispersed. When cleaning and maintenance are required, the storage drawer 5 can be directly removed and washed with water. After completion, it can be reinstalled in its original position. Then, the germicidal lamp 15 can be activated via the control panel 4 to achieve internal sterilization.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for collecting evidence samples for case investigation, characterized in that, Includes a box body (1), a storage drawer (5), and a moving arm (11). The lower end of the box body (1) is equipped with casters (3) for assembling the storage drawer (5) and the moving arm (11) structure, and for easy carrying and movement of the whole. There are multiple sets of storage drawers (5), which are vertically arranged inside the box body (1). One end of the box body (1) has an opening. The storage drawer (5) is slidably connected to the box body (1) via a slide rail (16). The upper end of the storage drawer (5) is equipped with a sealing end cap for sealing the interior. An air supply structure (14) is provided above the storage drawer (5). The lower end of the air supply structure (14) is equipped with multiple sets of pipes that are respectively connected to the air inlet channel of the storage drawer (5) and the compressor (10) to achieve graded temperature control. The movable arm (11) is located inside the box (1) on the side away from the storage drawer (5). The movable arm (11) includes a rotating base and an extension arm. One end of the movable arm (11) has a mounting base for mounting claws or video surveillance equipment.

2. The evidence sample collection device for case investigation according to claim 1, characterized in that, One end of the housing (1) is equipped with a push rod for assisting movement. The universal wheel (3) also includes a brake pedal. The brake pedal is connected to the universal wheel (3) through a lug and a rotating pin structure. The pedal is an L-shaped plate. After being flipped downwards, one end of it will abut against the rubber tire, thereby restricting the tire rotation.

3. The evidence sample collection device for case investigation according to claim 2, characterized in that, The box (1) is made of plastic and has an internal heat insulation layer. The upper surface of the box (1) has a hard reinforced plate for use as a work surface. The two sides of the box (1) are symmetrically provided with support legs (2). The support legs (2) are rotatably connected to the box (1) through a rotating seat. One end of the support leg (2) has a bottom plate. The lower end of the bottom plate has anti-slip texture, which is used to support the box (1) when the whole body rotates and the bottom plate contacts the ground.

4. The evidence sample collection device for case investigation according to claim 1, characterized in that, The box (1) has a roller shutter (8) on one side to cover part of the chamber of the moving arm (11). The upper end of the box (1) has a lamp holder (7). The lamp holder (7) includes a rotating seat and a support rod. The rotating seat is rotatably connected to the box (1). The support rod is rotatably connected to the rotating seat through a rotating pin and is used to assemble lamps for lighting. The box (1) has a control panel (4) on one side. The control panel (4) is located above the storage drawer (5) and is used to input control signals to the control module (9).

5. The evidence sample collection device for case investigation according to claim 4, characterized in that, The control module (9) is located inside the housing (1) and above the moving arm (11). One end of the module has a wire that is connected to the control panel (4), the compressor (10) and the moving arm (11) respectively. A battery pack (12) is provided below the moving arm (11). An insulating mounting bracket is provided between the battery pack (12) and the moving arm (11) to separate the mounting chamber. One side of the battery pack (12) has a wire that is electrically connected to the control module (9) for power supply.

6. The evidence sample collection device for case investigation according to claim 5, characterized in that, The battery pack (12) includes battery cells and a heat sink. The battery cells are stacked and the heat sink is located between the battery cell layers to diffuse the temperature inside the battery cells outward. The heat sink has cooling fans on both sides, one set of which blows forward and the other set blows backward to accelerate the airflow inside the heat sink for cooling. The battery pack (12) has a power connection module (13) in the middle. The power connection module (13) has multiple sets of interfaces and voltage protection structures for connecting to external lines for power supply.

7. The evidence sample collection device for case investigation according to claim 1, characterized in that, The storage drawer (5) is a rectangular parallelepiped with a storage cavity inside. The upper edge of the storage drawer (5) has a top air intake channel (18). The top air intake channel (18) is arranged along the pulling direction of the storage drawer (5). The inner side of the top air intake channel (18) has multiple sets of through holes facing the storage cavity. The air supply structure (14) is connected to the top air intake channel (18) through a hose for uniform air supply.

8. A device for collecting evidence samples for case investigation according to claim 7, characterized in that, The bottom of the storage drawer (5) has multiple sets of slots for inserting and fixing the partition (17). The inner side of the plate adjacent to the top air intake channel (18) of the storage drawer (5) has a middle air intake channel (19). There are multiple sets of the middle air intake channel (19), which are arranged parallel to the axis of the slots. One end of the middle air intake channel (19) has a line connected to the air supply structure (14). The inner side of the partition (17) has a channel, and a sealing ring is provided near the middle air intake channel (19) for cooperating with the middle air intake channel (19) to transmit cold air. The two sides of the channel have openings for sending cold air to both sides of the partition (17) to achieve uniform cold air delivery inside the storage drawer (5).

9. A device for collecting evidence samples for case investigation according to claim 1, characterized in that, The storage drawer (5) is provided with an exhaust port (6) at the bottom. The exhaust port (6) is located on one side of the box (1) and is used to discharge excess gas inside the box (1) and stabilize the internal pressure. The storage drawer (5) is provided with a germicidal lamp (15) at the top. The germicidal lamp (15) is set facing the upper end of the storage drawer (5) and its two ends are fixedly connected to the box (1) through connecting rods. It is used for internal sterilization after cleaning and maintenance.

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