Physical evidence extraction auxiliary device

Abstract

The utility model discloses a material evidence extraction auxiliary device, and specifically relates to the material evidence extraction technology field, the material evidence extraction auxiliary device comprises a cylinder, the axial direction of the cylinder is provided with a thread groove, the thread groove is internally screwed with a thread rod, the front end of the outer wall of the cylinder is provided with a lighting member, the front end of the cylinder is provided with four grooves in an annular array, and the four grooves are arranged in the cylinder. And a movable clamping plate is hinged to the interior of each groove, a second bearing is installed at the front end of the threaded rod, and a second connecting rod is fixed to the inner ring of the second bearing. By rotating the threaded rod penetrating through the cylinder, the cotton swabs can be rapidly clamped and placed at the end of the cylinder through the four hinged movable clamping plates, the cotton swabs are clamped stably and reliably, the device is suitable for evidence obtaining operation of physical evidences at long and narrow corners, the physical evidences can be visually wiped by turning on the accent light bead in a dark environment, and the physical evidences can be rapidly wiped. And the accent light beads are obliquely arranged on the inclined surface, so that irradiation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of physical evidence extraction, in particular to a physical evidence extraction auxiliary device. Background Art

[0002] The extraction of physical evidence mainly refers to the discovery of traces and items such as blood, fingerprints, footprints, handwriting, hair, body fluids, human tissues, etc. that may be related to the facts of the case during the investigation, inspection, and search. The extraction of physical evidence in criminal cases is a very important task. It helps to collect evidence, apprehend criminal suspects, and protect the personal rights and property interests of citizens.

[0003] During the on-site investigation, we often encounter dim light conditions. We will use auxiliary light sources to extract physical evidence, but we cannot take photos to fix it. At the same time, the light sources for on-site investigation are relatively large. There are some narrow corners where the light source cannot reach, resulting in blind angles, which will lead to blind evidence extraction. Based on this, an auxiliary device for evidence extraction is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide an auxiliary device for extracting physical evidence to solve the above-mentioned deficiencies in the technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a physical evidence extraction auxiliary device, comprising:

[0006] A cylinder, wherein a thread groove is provided in the axial direction of the cylinder, a threaded rod is screwed in the thread groove, and a lighting component is installed at the front end of the outer wall of the cylinder;

[0007] The front end of the cylinder is provided with four grooves in a circular array, each of which is hinged with a movable clamping plate, a second bearing is installed at the front end of the threaded rod, a second connecting rod is fixed to the inner ring of the second bearing, a connecting column is fixed to the end of the second connecting rod away from the second bearing, and a spring is connected between the connecting column and the movable clamping plate.

[0008] Preferably, a battery shell is fixed to the rear end of the outer wall of the cylinder, a rechargeable battery is installed in the battery shell, and a switch is embedded in the outer wall of the battery shell.

[0009] Preferably, the lighting component includes a lamp bead mounting seat and a high-intensity lamp bead, the lamp bead mounting seat is fixed to the outer wall of the cylinder, and the upper end surface of the lamp bead mounting seat is provided with an inclined surface, and the high-intensity lamp bead is embedded in the upper end surface of the lamp bead mounting seat.

[0010] Preferably, first connecting rods are connected to the ends of both side walls of the movable splint, and a first bearing is installed between the first connecting rod and the inner wall of the groove.

[0011] Preferably, an anti-skid clamping block is fixed to the clamping surface of the movable clamping plate, and the clamping surface of the anti-skid clamping block is provided with anti-skid patterns.

[0012] Preferably, a screw block is installed at the rear end of the threaded rod, and a handle is also fixed to the rear end of the outer wall of the cylinder.

[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0014] The utility model has a simple and compact structure and is easy to use. By rotating the threaded rod that passes through the cylinder, the cotton swab can be quickly clamped and placed at the end of the cylinder using four hinged movable clamps, and the cotton swab is clamped stably and reliably. Secondly, the device is suitable for evidence collection operations in narrow and long corners. In a dim light environment, the strong light lamp beads are turned on, and the evidence can be wiped visually, which improves the accuracy of evidence extraction. The strong light lamp beads are tilted on the inclined plane to facilitate irradiation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the connection between the spring and the threaded rod of the utility model;

[0018] Figure 3 This is the appearance diagram of the cylinder of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the movable splint of the utility model;

[0020] Figure 5 for Figure 1 A magnified view of part A in FIG.

[0021] Figure 6 for Figure 2 Enlarged view of part B in .

[0022] Description of reference numerals:

[0023] 1. Cylinder; 2. Threaded groove; 3. Threaded rod; 4. Movable splint; 5. Lamp bead mounting seat; 6. High-intensity lamp bead; 7. Battery shell; 8. Switch; 9. Handle; 10. Twist block; 11. Spring; 12. Groove; 13. Anti-slip clamp; 14. First connecting rod; 15. First bearing; 16. Second bearing; 17. Second connecting rod; 18. Connecting column. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model, and combined with Figure 2-Figure 3 as well as Figure 6 As shown, the evidence extraction auxiliary device includes a cylinder 1, a threaded groove 2 is provided in the axial direction of the cylinder 1, a threaded rod 3 is screwed in the threaded groove 2, a screw block 10 is installed at the rear end of the threaded rod 3, and the screw block 10 is used to rotate the threaded rod 3 to facilitate the staff to apply force by hand, and a lighting component is installed at the front end of the outer wall of the cylinder 1, wherein the lighting component preferably includes a lamp bead mounting seat 5 and a strong light lamp bead 6, the lamp bead mounting seat 5 is fixed to the outer wall of the cylinder 1, and the upper end surface of the lamp bead mounting seat 5 is provided with an inclined surface, the strong light lamp bead 6 is embedded in the upper end surface of the lamp bead mounting seat 5, and the strong light lamp bead 6 is inclined on the inclined surface. The arrangement is convenient for irradiation. A battery shell 7 is fixed at the rear end of the outer wall of the cylinder 1. A rechargeable battery is installed in the battery shell 7. A switch 8 is embedded in the outer wall of the battery shell 7, and a charging port is provided at the rear end of the battery shell 7. When the rechargeable battery is insufficient, it can be charged from the rechargeable battery. The switch 8 is used to turn on and off the high-intensity lamp bead 6. When it is in a dim light environment, the high-intensity lamp bead 6 is turned on, and the physical evidence can be visually wiped, thereby improving the accuracy of physical evidence extraction. A handle 9 is also fixed at the rear end of the outer wall of the cylinder 1. When the staff holds it, the handle 9 is used to hold it stably and it is not easy to slip.

[0026] In addition, four grooves 12 are provided in a circular array at the front end of the cylinder 1, and a movable splint 4 is hinged in each groove 12. The four hinged movable splints 4 are used to clamp the cotton swab. A second bearing 16 is installed at the front end of the threaded rod 3, and a second connecting rod 17 is fixed to the inner ring of the second bearing 16. A connecting column 18 is fixed to the end of the second connecting rod 17 away from the second bearing 16. A spring 11 is connected between the connecting column 18 and the movable splint 4. When the spring 11 is in a natural state, the four movable splints 4 are in a vertical state, so that the cotton swab can be quickly placed between the four movable splints 4.

[0027] Among them, see Figure 5 As shown, first connecting rods 14 are connected to the ends of both side walls of the movable clamping plate 4 , and first bearings 15 are installed between the first connecting rod 14 and the inner wall of the groove 12 .

[0028] See also Figure 4 As shown, an anti-skid clamping block 13 is fixed to the clamping surface of the movable clamping plate 4, and the clamping surface of the anti-skid clamping block 13 is provided with anti-skid patterns.

[0029] Through the above technical solution:

[0030] During specific use, the staff can first perform the clamping operation of the cotton swab. The staff first inserts the rod of the cotton swab between the four movable clamps 4, and then uses the screw block 10 to rotate the threaded rod 3 that penetrates the axial direction of the cylinder 1 to move the threaded rod 3 downward. Through the cooperation of the second bearing 16 and the second connecting rod 17, the spring 11 can pull the ends of the hinged movable clamps 4 closer together, so that the anti-slip clamping block 13 with anti-slip grooves can be used to press the rod of the cotton swab to ensure the stability of the cotton swab clamping. Then the staff can hold the rear end of the cylinder 1 and reach into the narrow corner to collect evidence. When the light is poor, the switch 8 can be used to turn on the high-intensity lamp bead 6 to achieve visual wiping.

[0031] In addition, after use, the threaded rod 3 can be rotated in the opposite direction to move the ends of the four movable clamping plates 4 away from each other, thereby releasing the pressing and fixing of the cotton swab.

[0032] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A physical evidence extraction auxiliary device, characterized in that: include: A cylinder (1), wherein a threaded groove (2) is provided in the axial direction of the cylinder (1), a threaded rod (3) is screwed into the threaded groove (2), and a lighting component is installed at the front end of the outer wall of the cylinder (1); The front end of the cylinder (1) is provided with four grooves (12) in a circular array, and a movable clamping plate (4) is hinged in each of the grooves (12). A second bearing (16) is installed at the front end of the threaded rod (3), and a second connecting rod (17) is fixed to the inner ring of the second bearing (16). A connecting column (18) is fixed to the end of the second connecting rod (17) away from the second bearing (16), and a spring (11) is connected between the connecting column (18) and the movable clamping plate (4).

2. The device for assisting physical evidence extraction according to claim 1, characterized in that: A battery shell (7) is fixed to the rear end of the outer wall of the cylinder (1), a rechargeable battery is installed in the battery shell (7), and a switch (8) is embedded in the outer wall of the battery shell (7).

3. The device for assisting physical evidence extraction according to claim 1, characterized in that: The lighting component comprises a lamp bead mounting seat (5) and a high-intensity lamp bead (6); the lamp bead mounting seat (5) is fixed to the outer wall of the cylinder (1), and the upper end surface of the lamp bead mounting seat (5) is provided with an inclined surface; the high-intensity lamp bead (6) is embedded in the upper end surface of the lamp bead mounting seat (5).

4. The device for assisting physical evidence extraction according to claim 1, characterized in that: The ends of both side walls of the movable clamping plate (4) are connected to first connecting rods (14), and a first bearing (15) is installed between the first connecting rod (14) and the inner wall of the groove (12).

5. The physical evidence extraction auxiliary device according to claim 1, characterized in that: An anti-skid clamping block (13) is fixed to the clamping surface of the movable clamping plate (4), and the clamping surface of the anti-skid clamping block (13) is provided with anti-skid patterns.

6. The physical evidence extraction auxiliary device according to claim 1, characterized in that: A screw block (10) is mounted on the rear end of the threaded rod (3), and a handle (9) is fixed on the rear end of the outer wall of the cylinder (1).

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