Physical evidence sticking device

Abstract

The utility model discloses a physical evidence sticking device, and relates to the technical field of criminal investigation. Comprising a loading box which is of a structure with one end flared, and a box cover for blocking the flared opening of the loading box is arranged on the loading box; the cylindrical rolling head is loaded in the loading box; one end of the threaded rod is coaxially connected with the cylindrical rolling head, the cylindrical rolling head and the threaded rod can rotate relative to each other in the axial direction, and the threaded rod is in threaded fit with the loading box; the single-sided adhesive tape is arranged on the cylindrical rolling head, and the single-sided adhesive tape is arranged on the end face position of one end, opposite to the threaded rod, of the cylindrical rolling head and the side surface position of the cylindrical rolling head; the end face position supporting structure is arranged on the end face of the end, opposite to the threaded rod, of the cylindrical rolling head and used for supporting the single-sided adhesive tape, and the side face position supporting structure is arranged on the circumferential face of the cylindrical rolling head and used for supporting the single-sided adhesive tape.

Description

TECHNICAL FIELD

[0001] The utility model relates to criminal investigation technical field especially relates to a material evidence sticking device. BACKGROUND

[0002] Material evidence refers to all article traces capable of proving the true situation of a case. Its characteristic is to reflect certain case facts by the external characteristics, material properties of articles and the position thereof. For example, tools used in crime, various traces (bloodstains, fingerprints, etc.) left during crime, seized ill-gotten gains and other articles capable of proving the true situation of a case. Material evidence preservation refers to scientific and reasonable preservation of collected material evidence to ensure that its original characteristics, shape and internal information are not damaged, thereby maintaining its proof effect on case facts.

[0003] At a crime scene, biological debris such as biological cell debris is collected, which is generally collected by sticking method, that is, using a certain adhesive material to extract these cell debris, such as adhesive tape or a special sticking device.

[0004] However, in the prior art, a cotton swab or a cotton swab with adhesion is generally used to stick cell debris, and there are also some special sticking tools, such as a biological evidence sticking device, which uses a part with foam double-sided adhesive to stick evidence and then recovers the evidence into a sleeve-shaped protective cover for storage, waiting for DNA extraction operation. However, this biological evidence sticking device has disadvantages in operation, which is easy to touch during recovery into the sleeve after sticking the evidence, and then easily scratches the stuck evidence, affecting the accuracy of evidence collection.

[0005] Therefore, based on the above technical problems, the skilled in the art urgently needs to develop a material evidence sticking device. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at solving the above problems and provides a material evidence sticking device.

[0007] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0008] The utility model relates to a material evidence sticking device, which comprises:

[0009] The loading box is of an expanded mouth structure at one end, and a box cover is arranged on the loading box to block the expansion of the loading box.

[0010] The cylindrical rolling head is loaded in the loading box.

[0011] a threaded rod coaxially connected with one end of the cylindrical rolling head, the cylindrical rolling head being axially rotatable relative to the threaded rod, the threaded rod being threadedly connected with the loading box;

[0012] a single-sided adhesive tape provided on the cylindrical rolling head, the single-sided adhesive tape being provided on the end surface of the cylindrical rolling head opposite to the one end of the threaded rod and on the side surface of the cylindrical rolling head;

[0013] an end surface position support structure provided on the end surface of the cylindrical rolling head opposite to the one end of the threaded rod for supporting the single-sided adhesive tape, and a side surface position support structure provided on the circumferential surface of the cylindrical rolling head for supporting the single-sided adhesive tape.

[0014] Further, the loading box is in a cylindrical structure, and the box cover is threadedly connected with the loading box.

[0015] Further, a cylindrical slot is formed on the end surface of the cylindrical rolling head for the threaded rod to extend into, and the threaded rod is rotatably connected with the cylindrical rolling head through a bearing.

[0016] Further, a nut is provided on the end surface of the loading box opposite to the flared end thereof at a central position, and the threaded rod is provided through the nut and threadedly connected with the nut.

[0017] Further, the single-sided adhesive tape has an adhesive surface at a middle position thereof.

[0018] Further, the end surface position support structure comprises:

[0019] a ring-shaped protrusion coaxially provided on the end surface of the cylindrical rolling head opposite to the one end of the threaded rod, one side of the single-sided adhesive tape opposite to the adhesive surface being covered on the ring-shaped protrusion and fixed with the outer side surface of the ring-shaped protrusion through adhesion; and

[0020] a first support protrusion provided on the end surface of the cylindrical rolling head opposite to the one end of the threaded rod and located inside the ring-shaped protrusion, the first support protrusion being used for supporting the single-sided adhesive tape.

[0021] Further, the side surface position support structure comprises:

[0022] a front end protrusion provided on the side surface of the cylindrical rolling head close to the one end of the ring-shaped protrusion;

[0023] A rear end protrusion is arranged on the side surface of the cylindrical rolling head at an end away from the annular protrusion, the height of the rear end protrusion is higher than the height of the front end protrusion, and the two ends of the single-sided rubber are fixed on the front end protrusion and the rear end protrusion respectively by adhesion.

[0024] A second support protrusion is arranged on the side surface of the cylindrical rolling head between the front end protrusion and the rear end protrusion to support the single-sided rubber.

[0025] Further, the front end protrusion and the rear end protrusion are both annular protrusions, and the single-sided rubber arranged on the side surface of the cylindrical rolling head is fixed on the front end protrusion and the rear end protrusion in a closed ring shape.

[0026] Further, the front end protrusion and the rear end protrusion are both arc-shaped protrusions, and a plurality of front end protrusions and rear end protrusions are uniformly distributed on the side surface of the cylindrical rolling head in the circumferential direction.

[0027] The plurality of front end protrusions and the plurality of rear end protrusions are arranged in one-to-one correspondence, and the plurality of single-sided rubbers are arranged in one-to-one correspondence between the plurality of front end protrusions on the side surface of the cylindrical rolling head.

[0028] Further, a rotating head is arranged on the screw rod at an end opposite to the cylindrical rolling head and located outside the loading box.

[0029] In the above technical solution, the object evidence sticking device has the following beneficial effects:

[0030] The device can conveniently and quickly stick and collect evidence of debris or biological evidence such as cell debris, and can avoid touching and contaminating the evidence during recycling and storage, thereby improving the safety of the evidence sticking and collecting process. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0032] Figure 1 A structural schematic view of the object evidence sticking device provided by the embodiment of the present application;

[0033] Figure 2 A side view of the object evidence sticking device provided by the embodiment of the present application;

[0034] Figure 3 A schematic view of the front end protrusion and the rear end protrusion of the side position supporting structure of the physical evidence sticking device provided by the utility model embodiment are circular protrusions;

[0035] Figure 4 A schematic view of the front end protrusion and the rear end protrusion of the side position supporting structure of the physical evidence sticking device provided by the utility model embodiment are arc protrusions;

[0036] Figure 5 A partial enlarged view of the physical evidence sticking device provided by the utility model embodiment; Figure 1

[0037] Mark explanation:

[0038] 1, loading box; 2, box cover; 3, cylindrical rolling head; 4, threaded rod; 5, single-sided adhesive; 6, cylindrical groove; 7, nut; 8, annular protrusion; 9, first supporting protrusion; 10, front end protrusion; 11, rear end protrusion; 12, second supporting protrusion; 13, rotating head. Specific implementation

[0039] In order for those skilled in the art to better understand the technical scheme of the utility model, the utility model will be further described in detail below in conjunction with the drawings.

[0040] Please refer to Figures 1-5 A physical evidence sticking device, comprising:

[0041] Loading box 1, the loading box 1 is an expanded mouth structure, and the loading box 1 is provided with a box cover 2 blocking the expansion of the loading box 1, and the box cover 2 and the loading box 1 can form a closed structure for loading physical evidence;

[0042] Cylindrical rolling head 3, the cylindrical rolling head 3 is loaded in the loading box 1;

[0043] Threaded rod 4, one end of the threaded rod 4 is coaxially connected with the cylindrical rolling head 3, and the cylindrical rolling head 3 and the threaded rod 4 can rotate axially relative to each other, so that the cylindrical rolling head 3 can rotate axially alone to stick physical evidence during rotation, making operation convenient and fast, and the threaded rod 4 is screwed with the loading box 1, and then when the threaded rod 4 is rotated, the threaded rod 4 can move axially because of the screwing with the loading box 1, and then drives the cylindrical rolling head 3 to enter and exit the loading box 1 during the axial movement of the threaded rod 4, so as to realize the entering and exiting of the cylindrical rolling head 3 without touching the loading box 1;

[0044] ​The single-sided adhesive tape 5 is arranged on the cylindrical rolling head 3, and the end face of the cylindrical rolling head 3 opposite to the one end of the threaded rod 4 is provided with the single-sided adhesive tape 5, and the side surface of the cylindrical rolling head 3 is also provided with the single-sided adhesive tape 5, so that the single-sided adhesive tape 5 at different positions of the cylindrical rolling head 3 can be used to stick the evidence, and the convenience of the sticking process is improved.

[0045] The end face position supporting structure is arranged on the end face of the cylindrical rolling head 3 opposite to the one end of the threaded rod 4 and is used to support the single-sided adhesive tape 5, and the side face position supporting structure is arranged on the circumferential surface of the cylindrical rolling head 3 and is used to support the single-sided adhesive tape 5, so that the single-sided adhesive tape 5 with the adhesive surface is supported and protrudes from the cylindrical rolling head 3, thereby facilitating the sticking of the evidence.

[0046] Specifically, in use, the threaded rod 4 is rotated to move axially, so that the cylindrical rolling head 3 is taken out of the loading box 1, and the evidence is stuck by the single-sided adhesive tape 5. The threaded rod 4 is used to control the entry and exit of the cylindrical rolling head 3 into the loading box 1, so that the single-sided adhesive tape 5 can effectively stick the evidence and avoid accidental contact with the loading box 1, thereby ensuring the safety of the evidence extraction.

[0047] Further, the loading box 1 has a cylindrical structure, and the box cover 2 is threadedly connected with the loading box 1, so that the loading box 1 can be effectively and tightly connected. In addition, a sealing ring can be installed on the inner side of the box cover 2 to press and seal the loading box 1, which is a conventional sealing method and will not be described in detail.

[0048] Further, the cylindrical rolling head 3 is provided with a cylindrical groove 6 at the end face opposite to the one end of the threaded rod 4, the threaded rod 4 extends into the cylindrical groove 6 and is rotatably connected through a bearing, so that the cylindrical rolling head 3 can rotate axially relative to the threaded rod 4, and the cylindrical rolling head 3 can roll to stick the evidence.

[0049] Further, the loading box 1 is provided with a nut 7 at the center of the end face opposite to the flared end of the loading box 1, and the threaded rod 4 extends through the nut 7 and is threadedly connected with the nut 7, so that the threaded rod 4 can be threadedly connected with the loading box 1 without affecting the sealing of the loading box 1.

[0050] Further, the single-sided adhesive tape 5 has an adhesive surface at the middle position, which is used to stick the evidence. When the evidence needs to be detected, the single-sided adhesive tape 5 is removed for detection.

[0051] Further, the end face position supporting structure comprises:

[0052] The annular protrusion 8 is coaxially arranged on the end face of the cylindrical rolling head 3 opposite to the one end of the threaded rod 4, and the single-sided adhesive tape 5 covers the annular protrusion 8 on the side opposite to the adhesive surface and is fixed with the outer side of the annular protrusion 8 through adhesion; and

[0053] The first supporting protrusion 9 is arranged on the end face of the cylindrical rolling head 3 opposite to the threaded rod 4 and inside the annular protrusion 8, and is used to support the single-sided adhesive tape 5, so that the single-sided adhesive tape 5 with the adhesive surface is supported and protrudes from the cylindrical rolling head 3, thereby facilitating the collection of evidence.

[0054] Specifically, the single-sided adhesive tape 5 is fixed by adhesion between the edge position and the annular protrusion 8, and other parts of the single-sided adhesive tape 5 are not adhered to the first supporting protrusion 9, so that the fixed area of the single-sided adhesive tape 5 is small, and the single-sided adhesive tape 5 can be easily removed from the annular protrusion 8. The single-sided adhesive tape 5 can be removed by tweezers.

[0055] Further, the side position supporting structure comprises:

[0056] The front end protrusion 10 is arranged on the side surface of the cylindrical rolling head 3 close to the end portion of the annular protrusion 8;

[0057] The rear end protrusion 11 is arranged on the side surface of the cylindrical rolling head 3 away from the end portion of the annular protrusion 8, the height of the rear end protrusion 11 is higher than the height of the front end protrusion 10, and the two ends of the single-sided adhesive tape 5 are fixed by adhesion on the front end protrusion 10 and the rear end protrusion 11, respectively; and

[0058] The second supporting protrusion 12 is arranged on the side surface of the cylindrical rolling head 3 and between the front end protrusion 10 and the rear end protrusion 11, and is used to support the single-sided adhesive tape 5, so that the single-sided adhesive tape 5 with the adhesive surface is supported and protrudes from the cylindrical rolling head 3, thereby facilitating the collection of evidence.

[0059] Specifically, the two end portions of the single-sided adhesive tape 5 are fixed by adhesion on the front end protrusion 10 and the rear end protrusion 11, so as to support the single-sided adhesive tape 5, and the fixed area is small, thereby facilitating the removal of the single-sided adhesive tape 5. The single-sided adhesive tape 5 can be removed by tweezers.

[0060] According to the use requirement, the front end protrusion 10 and the rear end protrusion 11 of the side position supporting structure can be arranged in two structure forms:

[0061] Further, as shown in Figure 3 The front end protrusion 10 and the rear end protrusion 11 are both circular protrusions, and the single-sided adhesive tape 5 on the side position of the cylindrical rolling head 3 is arranged in a closed ring shape on the front end protrusion 10 and the rear end protrusion 11, so as to be fixed, so that the single-sided adhesive tape 5 in the closed ring shape is a complete cylindrical surface, which can continuously collect evidence during the rolling process of the cylindrical rolling head 3, and the single-sided adhesive tape 5 can be completely removed at one time for related detection.

[0062] Further, as shown in Figure 4As shown, the front end protrusions 10 and the rear end protrusions 11 are both arc-shaped protrusions, and the plurality of front end protrusions 10 and the plurality of rear end protrusions 11 are evenly distributed on the side surface of the cylindrical rolling head 3 in the circumferential direction;

[0063] The plurality of front end protrusions 10 and the plurality of rear end protrusions 11 are arranged in one-to-one correspondence, and the plurality of single-sided adhesives 5 are arranged on the side surface of the cylindrical rolling head 3 in one-to-one correspondence with the plurality of front end protrusions 10.

[0064] This is another structure of the side surface position support structure, which sets the front end protrusions 10 and the rear end protrusions 11 into multiple groups and evenly distributes them on the circumferential surface of the cylindrical rolling head 3 in the circumferential direction. Correspondingly, the single-sided adhesives 5 are arranged in multiple groups and are fixed on the corresponding front end protrusions 10 and rear end protrusions 11. When taking evidence, the evidence can be stuck on the plurality of single-sided adhesives 5, and then the single-sided adhesives 5 can be taken off individually, and the remaining single-sided adhesives 5 can be used as backup.

[0065] Further, the threaded rod 4 is provided with a rotating head 13 at the end opposite to the cylindrical rolling head 3 and located outside the loading box 1, so that the threaded rod 4 can be conveniently rotated manually through the rotating head 13.

[0066] More specifically, when rotating the threaded rod 4 to push the cylindrical rolling head 3 out of the loading box 1, the threaded top end of the threaded rod 4 can be rotated to the loading box 1 to form a locking to prevent the cylindrical rolling head 3 from rotating the threaded rod 4 during rolling on the object. The rotating head 13 can also be directly held to control the rolling of the cylindrical rolling head 3.

[0067] The device can conveniently and quickly stick and take evidence of debris evidence or biological evidence such as cell debris, and can avoid touching and contaminating the evidence during recycling and preservation, thereby improving the safety of the evidence sticking and taking process.

[0068] The above only describes certain exemplary embodiments of the present application by way of illustration, and it is not necessary to modify the described embodiments in various ways without deviating from the spirit and scope of the present application for ordinary skilled in the art. Therefore, the above figures and descriptions are illustrative in nature and should not be construed as limiting the scope of protection claimed by the present application.

Claims

1. A device for taking a trace sample, comprising: The utility model provides a kind of loading box and cylindrical rolling head, which is characterized by the following technical scheme. The utility model discloses a loading box (1), which is a flared structure at one end, and a box cover (2) is arranged on the loading box (1) to block the flared end of the loading box (1). A cylindrical rolling head (3) is loaded in the loading box (1). A threaded rod (4) is coaxially connected between one end of the cylindrical rolling head (3) and the threaded rod (4), and the cylindrical rolling head (3) and the threaded rod (4) can rotate axially relative to each other. A single-sided adhesive (5) is arranged on the cylindrical rolling head (3), and the end face of the cylindrical rolling head (3) opposite to the threaded rod (4) is provided with the single-sided adhesive (5) on the side surface of the cylindrical rolling head (3). An end face position support structure and a side face position support structure are arranged on the end face of the cylindrical rolling head (3) opposite to the threaded rod (4) to support the single-sided adhesive (5).

2. The trace collection device of claim 1, wherein The loading box (1) is a cylindrical structure, and the box cover (2) is threadedly connected with the loading box (1).

3. The trace collection device of claim 1, wherein A cylindrical groove (6) is formed in the end face of the cylindrical rolling head (3) to allow the threaded rod (4) to extend into the cylindrical groove (6), and the threaded rod (4) is rotatably connected to the cylindrical groove (6) through a bearing.

4. The trace collection device of claim 1, wherein A nut (7) is arranged at the center of the end face of the loading box (1) opposite to the flared end, and the threaded rod (4) passes through the nut (7) and is threadedly connected with the nut (7).

5. The trace collection device of claim 1, wherein The single-sided adhesive (5) has an adhesive surface at the middle position.

6. The trace collection device of claim 5, wherein The end face position support structure comprises: An annular protrusion (8) is coaxially arranged on the end face of the cylindrical rolling head (3) opposite to the threaded rod (4), and one side of the single-sided adhesive (5) opposite to the adhesive surface is covered on the annular protrusion (8) and is fixed with the outer side of the annular protrusion (8) through adhesion. A first support protrusion (9) is arranged on the end face of the cylindrical rolling head (3) opposite to the threaded rod (4) and is located inside the annular protrusion (8), and the first support protrusion (9) is used to support the single-sided adhesive (5).

7. The trace collection device of claim 6, wherein the adhesive is a pressure sensitive adhesive. The side face position support structure comprises: A front end protrusion (10) is arranged on the side surface of the cylindrical rolling head (3) near one end of the annular protrusion (8). A rear end protrusion (11) is arranged on the side surface of the cylindrical rolling head (3) away from one end of the annular protrusion (8), and the height of the rear end protrusion (11) is higher than the height of the front end protrusion (10). The two ends of the single-sided adhesive (5) are respectively fixed on the front end protrusion (10) and the rear end protrusion (11) through adhesion. A second supporting protrusion (12) is arranged on the side surface of the cylindrical rolling head (3) between the front end protrusion (10) and the rear end protrusion (11) to support the single-sided rubber (5).

8. The trace collection device of claim 7, wherein the adhesive is a pressure sensitive adhesive. The front end protrusion (10) and the rear end protrusion (11) are both circular ring protrusions, and the single-sided rubber (5) arranged on the side surface of the cylindrical rolling head (3) is fixed on the front end protrusion (10) and the rear end protrusion (11) in a closed ring shape.

9. The trace collection device of claim 7, wherein the adhesive is a pressure sensitive adhesive. The front end protrusion (10) and the rear end protrusion (11) are both arc protrusions, and a plurality of front end protrusions (10) and rear end protrusions (11) are evenly distributed circumferentially on the side surface of the cylindrical rolling head (3). The number of the front end protrusions (10) is the same as that of the rear end protrusions (11), and the single-sided rubber (5) is arranged on the side surface of the cylindrical rolling head (3) in one-to-one correspondence with the front end protrusions (10).

10. The trace collection device of claim 1, wherein A rotating head (13) is arranged on the threaded rod (4) at a position opposite to one end of the cylindrical rolling head (3) and outside the loading box (1).

Images