A trace evidence rolling and sticking device

Abstract

The utility model discloses a trace evidence rolling and sticking device relates to evidence sticking device technical field, including shell subassembly, installation socket, operation handle and sticking part, through setting operation handle, operation handle includes support pole part, bending pole part and straight pole pole part, and sticking part is sleeved in the surface of support pole part, and bending pole part is set up in U type bending pole body structure, and the middle part is provided with annular bayonet, and the reasonable space interval can be formed between the hand that holds straight pole pole part and sticking part through U type bending pole part, avoids the hand shielding or the resistance and touch of the plane to be stuck, ensures that sticking part natural adhesion, the slight concave and convex of buffer pad layer can be adapted to the plane through the elastic deformation, guarantees that the adhesive surface sticking layer contacts the plane completely, finally avoids trace evidence to leak and sticks, promotes the high efficiency and the integrity of sticking, and then effectively solves the problem that the existing straight pole type handle is easy to produce space interference with the plane to be stuck.

Description

Technical Field

[0001] This utility model relates to the technical field of physical evidence adhesive devices, and in particular to a micro-volume physical evidence rolling adhesive device. Background Technology

[0002] In criminal investigation, forensic identification, and physical evidence examination, trace evidence (such as fibers, hair, small debris, and paint particles) is often a key clue for solving cases and establishing facts. These trace evidences are characterized by their small size, limited quantity, easy adhesion, and susceptibility to contamination, thus placing extremely high demands on efficient and non-destructive collection techniques. Currently, the mainstream method for collecting trace evidence in the industry is still the "adhesive method," which involves directly contacting the surface to be examined with an adhesive component to attach the trace evidence to the adhesive surface for collection. Due to its ease of operation and low cost, this type of adhesive device is widely used in crime scene investigation and laboratory sample pretreatment, becoming an indispensable basic equipment in the trace evidence collection process.

[0003] However, existing micro-evidence collection devices still have many technical shortcomings in practical applications, making it difficult to meet the requirements of high-precision collection: First, most devices use a straight rod structure for the operating handle. When the operator holds the handle, the hand is prone to spatial interference with the surface to be collected (such as the ground, table, or clothing surface), which causes the collecting part to fail to naturally fit the surface, resulting in local suspension or angular deviation, thus causing micro-evidence to be missed.

[0004] Therefore, this utility model proposes a micro-evidence rolling adhesive device to solve the above problems. Utility Model Content

[0005] In view of the problems existing in the prior art, this utility model is proposed.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a micro-item rolling adhesive device, which includes a housing assembly, a mounting socket, an operating handle, and an adhesive component; the housing assembly includes a central locking housing, an upper housing inserted into the central locking housing, and a lower housing inserted into the lower part of the central locking housing; the mounting socket is fixed and vertically inserted into the upper surface of the central locking housing; the operating handle is curved, with its front end connected to the adhesive component and its rear end inserted into the mounting socket;

[0007] The operating handle includes a support rod, a bending rod, and a straight rod connected in sequence. The adhesive component is sleeved on the surface of the support rod. The bending rod has a U-shaped bending rod structure and an annular slot in its middle.

[0008] As a preferred embodiment of the micro-evidence rolling adhesive device of the present invention, the operating handle further includes an elastic locking rod connected to the end of the support rod that is away from the bent rod, and the elastic locking rod has a rectangular opening.

[0009] The inner wall of the lower housing is fixed with an internal support plate, and the internal support plate has bending holes.

[0010] As a preferred embodiment of the micro-evidence rolling adhesive device of this utility model, the surface of the lower shell is provided with a notch, and the middle engaging shell extends at the notch to form a sealing strip that seals the notch.

[0011] As a preferred embodiment of the micro-evidence rolling adhesive device of this utility model, the mounting socket includes an upper rotating ring plate and a lower annular clamping plate that are coaxially arranged and can rotate relative to each other. The bottom surface of the lower annular clamping plate has an annular cavity. A limiting post plate is inserted into the annular cavity of the lower annular clamping plate. The limiting post plate is fixedly assembled to the surface of the central locking shell.

[0012] As a preferred embodiment of the micro-evidence rolling adhesive device of this utility model, the upper rotating ring plate is provided with an upper external silicone thread on its outer side, and a circular cavity is provided inside the upper rotating ring plate, the diameter of the cavity being consistent with the outer diameter of the straight rod.

[0013] As a preferred embodiment of the micro-evidence rolling adhesive device of this utility model, the lower annular plate is provided with a lower external silicone thread on its outer side and an inner insertion cavity for inserting the rear end of the operating handle; the diameter of the inner insertion cavity is larger than the outer diameter of the straight rod.

[0014] As a preferred embodiment of the micro-evidence rolling adhesive device of this utility model, the adhesive component includes an adhesive roller, a buffer pad layer and an adhesive adhesive layer, the buffer pad layer is wrapped around the outside of the adhesive roller, and the adhesive adhesive layer covers the surface of the buffer pad layer.

[0015] The beneficial effects of this utility model are:

[0016] This application addresses the issue of existing straight handles causing spatial interference with the surface of the adhesive component by designing an operating handle comprising a support rod, a bent rod, and a straight rod. The adhesive component is sleeved on the surface of the support rod, and the bent rod has a U-shaped bent rod structure with an annular notch in its center. The U-shaped bent rod creates a reasonable spatial gap between the hand holding the straight rod and the adhesive component, preventing the hand from obstructing or contacting the surface to be adhesive, ensuring a natural fit of the adhesive component, and thus effectively solving the problem of spatial interference between existing straight handles and the surface to be adhesive.

[0017] This application utilizes the elastic deformation of the elastic locking rod through the rectangular opening to tightly engage with the bending hole, providing a stable assembly base for the operating handle. After the annular bayonet breaks, the elastic locking rod, support rod, and adhesive components carrying the evidence can fall into the evidence storage cavity along the bending hole, and the space reserved by the built-in support plate avoids interference between components during bending. The sealing strip can close the opening of the lower shell, and after reinstalling the lower shell, it can seal the evidence storage cavity, preventing the evidence from falling off, getting damp, or becoming contaminated, thus achieving convenient and clean temporary storage and transfer of trace evidence, further optimizing the evidence storage effect.

[0018] This application uses a limiting post plate to position the lower annular clamping plate. The upper rotating ring plate is tightly engaged with the straight rod due to its circular cavity. Twisting the upper rotating ring plate with its anti-slip upper external silicone thread will drive the operating handle to rotate. The lower external silicone thread of the lower annular clamping plate improves the gripping stability, and the space reserved in the inner cavity ensures that the handle can rotate smoothly. Ultimately, this allows for flexible adjustment of the adhesive angle, adapting to the adhesive needs of inclined planes or narrow spaces, improving the operational flexibility of the device, and effectively solving the problem that existing devices have difficulty adjusting the adhesive angle due to the small gripping part of the operating handle. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the micro-evidence rolling adhesive collection device of Example 1;

[0021] Figure 2 This is a front structural plan view of the adhesive component in this utility model;

[0022] Figure 3 This is a side view of the adhesive component in this utility model.

[0023] Figure 4 This is a schematic diagram of the micro-evidence rolling adhesive device of Example 2;

[0024] Figure 5 This is a structural plan view of the micro-evidence rolling adhesive device of Example 2.

[0025] Figure 6 This utility model Figure 5 A schematic diagram of the structure at point A.

[0026] Explanation of reference numerals in the attached drawings: 101, upper housing; 102, lower housing; 103, middle locking housing; 1031, sealing strip; 200, mounting socket; 201, upper rotating ring plate; 2011, upper external silicone thread; 202, lower annular locking plate; 2021, lower external silicone thread; 2022, inner cavity; 203, limiting post plate; 300, operating handle; 301, elastic locking rod; 3011, rectangular opening; 302, support rod; 303, bending rod; 3031, annular bayonet; 304, straight rod; 400, adhesive component; 401, adhesive roller; 402, buffer pad layer; 403, adhesive adhesive layer; 500, built-in bearing plate; 501, bending hole. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0030] Example 1

[0031] Reference Figures 1-3 As shown, this is the first embodiment of the present invention. This embodiment provides a micro-evidence rolling adhesive device, including a housing assembly, a mounting socket 200, an operating handle 300, and an adhesive component 400. The housing assembly includes a central engaging housing 103, an upper housing 101 inserted into the central engaging housing 103, and a lower housing 102 inserted below the central engaging housing 103. The central engaging housing 103 is connected to the upper housing 101 and the lower housing 102 respectively, forming an upper component mounting cavity and a lower evidence storage cavity. The mounting socket 200 is fixed in the component mounting cavity and vertically inserted into the upper surface of the central engaging housing 103. The mounting socket 200 is used to insert the operating handle 300. The operating handle 300 is curved, with its front end connected to the adhesive component 400 and its rear end inserted into the mounting socket 200.

[0032] The operating handle 300 includes a support rod 302, a bending rod 303, and a straight rod 304 connected in sequence. The adhesive component 400 is sleeved on the surface of the support rod 302 and rotates on the surface of the support rod 302. The bending rod 303 is configured with a U-shaped bending rod structure and has an annular slot 3031 in its middle. The annular slot 3031 drives the diameter of the bending rod 303 to reduce to form an easily foldable part.

[0033] Furthermore, the mounting socket 200 is configured as a vertically continuous annular cylindrical structure, the diameter of which is the outer diameter of the straight rod portion 304, for inserting the operating handle 300.

[0034] In one embodiment, the adhesive component 400 includes an adhesive roller 401, a buffer pad 402, and an adhesive adhesive layer 403. The buffer pad 402 wraps around the outside of the adhesive roller 401, and the adhesive adhesive layer 403 covers the surface of the buffer pad 402.

[0035] Working principle: The upper housing 101 is inserted into the upper part of the middle locking housing 103, and the lower housing 102 is inserted into the lower part of the middle locking housing 103, so that the three are connected to form a closed component mounting cavity at the top and an open evidence storage cavity at the bottom. Since the mounting socket 200 is a vertically continuous annular cylindrical structure and is vertically fixed to the upper surface of the middle locking housing 103 and located in the component mounting cavity, the straight rod part 304 of the operating handle 300 is inserted into the annular cylindrical cavity of the mounting socket 200. Since the inner diameter of the annular cylindrical cavity is perfectly matched with the outer diameter of the straight rod part 304, the straight rod part 304 can be tightly locked in the mounting socket 200, realizing the vertical fixation of the operating handle 300. At this time, the U-shaped bent rod part 303 and the support rod part 302 of the operating handle 300 are located in the component mounting cavity, and the adhesive component 400 is sleeved on the surface of the support rod part 302 and is in the ready-to-adhere state.

[0036] When it is necessary to collect physical evidence, pull off the upper housing 101 from the middle locking housing 103, and pull out the straight rod 304 of the operating handle 300 from the annular cylindrical cavity of the mounting socket 200. Hold the straight rod 304 of the operating handle 300 directly with your hand. Because the bent rod 303 has a U-shaped bent rod structure, the bending design of the bent rod 303 can form a reasonable space between the hand holding the straight rod 304 and the adhesive component 400, effectively avoiding the hand from obstructing or touching the surface to be adhesive, and ensuring that the adhesive component 400 can naturally and without angular deviation approach the surface to be adhesive.

[0037] Subsequently, the adhesive layer 403 of the adhesive component 400 is aligned with and adhered to the area of ​​the trace evidence on the surface to be adhered. While maintaining a stable grip on the straight rod 304, the operating handle 300 is pushed or pulled slowly along the surface to be adhered. Since the adhesive roller 401 of the adhesive component 400 is sleeved on the surface of the support rod 302 and can rotate freely around the support rod 302, the adhesive roller 401 will roll synchronously with the pushing or pulling force during the movement. At the same time, the buffer pad 402 wrapped around the outside of the adhesive roller 401 adapts to the slight unevenness of the surface to be adhered through elastic deformation, ensuring that the adhesive layer 403 always maintains full and tight contact with the surface, avoiding local missed adhesion caused by unevenness of the surface, and thus firmly adhering the trace evidence on the surface to the surface of the adhesive layer 403, achieving efficient and complete adhesion.

[0038] Example 2

[0039] Reference Figures 3-6 As shown, this is the second embodiment of the present invention. This embodiment is based on the previous embodiment, except that the mounting socket 200 can be configured as a combined structure. The mounting socket 200 includes an upper rotating ring plate 201 and a lower annular locking plate 202 that are coaxially arranged and can rotate relative to each other. The bottom surface of the lower annular locking plate 202 has an annular insertion cavity. A limiting post plate 203 is inserted into the annular insertion cavity of the lower annular locking plate 202. The limiting post plate 203 is fixedly assembled to the surface of the central locking housing 103.

[0040] Furthermore, the upper rotating ring plate 201 has an upper external silicone thread 2011 on its outer side, and a circular cavity is provided inside the upper rotating ring plate 201, the diameter of which is consistent with the outer diameter of the straight rod 304.

[0041] Furthermore, the lower annular plate 202 has a lower external silicone thread 2021 on its outer side and an inner insertion cavity 2022 for the rear end of the operating handle 300 to be inserted into; the diameter of the inner insertion cavity 2022 is larger than the outer diameter of the straight rod 304.

[0042] Working principle: First, the limiting post plate 203 is fixedly assembled on the surface of the middle engaging housing 103. Then, the lower annular clamping plate 202 is inserted into the limiting post plate 203 through the annular insertion cavity opened on its bottom surface. The limiting post plate 203 is used to achieve the positioning and assembly of the lower annular clamping plate 202, ensuring that the lower annular clamping plate 202 can remain coaxial with the upper rotating ring plate 201 and can only rotate relative to it. Then, the straight rod part 304 of the operating handle 300 is first passed through the through circular cavity inside the upper rotating ring plate 201, and then inserted into the inner insertion cavity 2022 inside the lower annular clamping plate 202. At the same time, the insertion of the upper housing 101, the lower housing 102 and the middle engaging housing 103 is completed, forming a closed component installation cavity and evidence storage cavity. At this time, the U-shaped bent rod part 303, the support rod part 302 and the adhesive part 400 of the operating handle 300 are in the state of waiting to be adhesiveted.

[0043] When it is necessary to collect trace amounts of evidence, the operator holds the lower outer silicone thread 2021 on the outside of the lower annular plate 202. The lower outer silicone thread 2021 can increase the grip friction and improve the grip stability, and provide a larger grip part to prevent the straight rod 304 from easily falling off the hand due to its small size.

[0044] If the surface to be bonded has an angle or the bonding direction needs to be adjusted in a narrow space, the upper outer silicone thread 2011 on the outer side of the upper rotating ring plate 201 can be turned by hand. Because the upper rotating ring plate 201 is tightly engaged with the straight rod 304, turning the upper rotating ring plate 201 will simultaneously drive the straight rod 304 and the entire operating handle 300 to rotate. Meanwhile, the lower annular locking plate 202 is positioned and fixed by the limiting post plate 203 and does not rotate with it. This allows for flexible adjustment of the bonding angle of the bonding component 400 at the front end of the operating handle 300, adapting to bonding needs on surfaces with different angles or in narrow spaces. After the angle adjustment is completed, keep your hand stable and use the operating handle 300U to adjust the bonding angle. The bending design of the bent rod 303 avoids interference between the hand and the surface to be adhered. The adhesive layer 403 of the adhesive component 400 is attached to the area to be adhered. Pushing or pulling the operating handle 300 causes the adhesive roller 401 to roll around the support rod 302. The buffer pad 402 adapts to the unevenness of the plane through elastic deformation, achieving comprehensive adhesion of trace evidence.

[0045] Example 3

[0046] Reference Figure 1 , Figure 4 as well as Figure 5 As shown, this is the third embodiment of the present invention. This embodiment is based on the above two embodiments. The difference is that the operating handle 300 also includes an elastic locking rod 301 connected to the end of the support rod 302 away from the bending rod 303. The elastic locking rod 301 is provided with a rectangular opening 3011.

[0047] The lower housing 102 is fixedly assembled with an internal support plate 500 inside the component mounting cavity, and the internal support plate 500 has a bending hole 501.

[0048] Furthermore, the surface of the lower housing 102 is provided with a notch, and the middle engaging housing 103 extends at the notch to form a sealing strip 1031 that seals the notch.

[0049] Furthermore, the distance between the built-in support plate 500 and the middle horizontal plane of the central engaging housing 103 is greater than the overall width of the operating handle 300.

[0050] Working principle: The lower housing 102 is pulled down from the middle engaging housing 103, opening the notch on the surface of the lower housing 102. The straight rod 304 is inserted along the annular cavity of the mounting socket 200 to achieve a tight engagement. The straight rod 304 at the front end of the operating handle 300 is then pressed vertically down along the notch on the surface of the lower housing 102. The elastic engaging rod 301 is aligned with the bending hole 501 of the built-in support plate 500 and inserted. The rectangular opening 3011 on the elastic engaging rod 301 assists in engagement through its own elastic deformation, thereby driving the spring... The elastic locking rod 301 is tightly locked into the bending hole 501. The straight rod 304 is pushed upward to apply an upward bending force. Because the annular locking notch 3031 reduces the diameter of the bending rod 303, it forms a weak point in the mechanical structure. The operating handle 300 can be easily broken off from the annular locking notch 3031. The broken elastic locking rod 301+, support rod 302 and adhesive component 400 are left in the evidence storage cavity along the bending hole 501. The lower housing 102 is re-inserted into the locking housing 103 in the middle to seal the evidence storage cavity.

[0051] Finally, the discarded parts, such as the lower section of the straight rod 304 and the bent rod 303, are removed, and the upper housing 101 is reinserted into the middle of the locking housing 103 to seal the component mounting cavity. This prevents the trace evidence on the adhesive component 400 inside the cavity from falling off, getting damp, or becoming contaminated. The entire carrying device can then complete the transfer of evidence, providing a clean and complete sample for subsequent testing.

[0052] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0053] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0054] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A micro-evidence rolling adhesive device, characterized in that: The device includes a housing assembly, a mounting socket (200), an operating handle (300), and an adhesive component (400). The housing assembly includes a central engaging housing (103), an upper housing (101) inserted into the central engaging housing (103), and a lower housing (102) inserted below the central engaging housing (103). The mounting socket (200) is fixed and vertically inserted into the upper surface of the central engaging housing (103). The operating handle (300) is curved, with its front end connected to the adhesive component (400) and its rear end inserted into the mounting socket (200). The operating handle (300) includes a support rod (302), a bent rod (303) and a straight rod (304) connected in sequence. The adhesive component (400) is sleeved on the surface of the support rod (302). The bent rod (303) is configured with a U-shaped bent rod structure and has an annular slot (3031) in its middle.

2. The micro-evidence rolling adhesive device as described in claim 1, characterized in that: The operating handle (300) also includes an elastic locking rod (301) connected to the end of the support rod (302) away from the bending rod (303), and the elastic locking rod (301) is provided with a rectangular opening (3011). The inner wall of the lower housing (102) is fixed with an internal support plate (500), and the internal support plate (500) has a bending hole (501).

3. The micro-evidence rolling adhesive device as described in claim 2, characterized in that: The lower housing (102) has a notch on its surface, and the middle engaging housing (103) extends at the notch to form a sealing strip (1031) that seals the notch.

4. The micro-evidence rolling adhesive device as described in claim 3, characterized in that: The mounting socket (200) includes an upper rotating ring plate (201) and a lower annular locking plate (202) that are coaxially arranged and can rotate relative to each other. The bottom surface of the lower annular locking plate (202) is provided with an annular insertion cavity. A limiting post plate (203) is inserted into the annular insertion cavity of the lower annular locking plate (202). The limiting post plate (203) is fixedly assembled to the surface of the central locking housing (103).

5. The micro-evidence rolling adhesive device as described in claim 4, characterized in that: The upper rotating ring plate (201) is provided with an upper external silicone thread (2011) on the outside, and a circular cavity is provided inside the upper rotating ring plate (201), the diameter of the cavity being consistent with the outer diameter of the straight rod (304).

6. The micro-evidence rolling adhesive device as described in claim 5, characterized in that: The lower annular plate (202) has a lower external silicone thread (2021) on its outer side and an inner cavity (2022) for inserting the rear end of the operating handle (300); the diameter of the inner cavity (2022) is larger than the outer diameter of the straight rod (304).

7. The micro-evidence rolling adhesive device as described in claim 6, characterized in that: The adhesive component (400) includes an adhesive roller (401), a buffer pad layer (402), and an adhesive adhesive layer (403). The buffer pad layer (402) is wrapped around the outside of the adhesive roller (401), and the adhesive adhesive layer (403) covers the surface of the buffer pad layer (402).

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