Adhesive tape method fingerprint sample acquisition instrument

Abstract

The utility model discloses an adhesive tape method fingerprint sample acquisition instrument which comprises a base, and a slide way, a first elastic plate, a cushion block, a second elastic plate, a support and an adhesive tape supporting assembly are sequentially arranged on the upper portion of the base at intervals in the length direction of the base. The top of the first elastic plate and the top of the second elastic plate are oppositely inclined inwards, and adhesive tape traction long holes are formed in the upper portions of the first elastic plate and the second elastic plate in a penetrating mode. Through the arrangement of the adhesive tape supporting frame for placing the adhesive tape, the traction sheet capable of pulling the adhesive tape, the elastic plate with rebound elasticity and the fingerprint collection cushion block matched with the finger radian, on one hand, the practical difficulty that the fingerprint sample collection quality is poor due to the fact that a collection technique is unfamiliar and a suspect is not matched can be greatly reduced; therefore, the fingerprint sample collection quality is improved; on the other hand, the fingerprint sample collection process of technicians is simplified, workload is reduced, and collection efficiency is improved; the device is simple in structure, low in cost, small in size, easy to carry, convenient to operate and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of fingerprint collection devices, in particular to a fingerprint sample collection instrument using an adhesive tape method. Background Art

[0002] In public security work, it is often necessary to collect fingerprint samples from ten fingers of criminals and victims in order to compare them with the suspect fingerprints extracted from the crime scene to identify the perpetrator or exclude irrelevant persons such as the victim. In actual work, the collection of fingerprint samples usually adopts the ink imprinting method. The quality of the collected samples is easily affected by factors such as the quality of the ink, the proficiency of the technicians in the collection technique, and the cooperation of the collected person. As a result, the collected fingerprint samples are often blurred and incomplete, which seriously affects the subsequent fingerprint inspection and identification. Utility Model Content

[0003] In order to solve the above technical problems, the technical solution provided by the utility model is as follows: a tape fingerprint sample collector, comprising a base, wherein a slideway, a first elastic plate, a cushion block, a second elastic plate, a bracket and a tape support assembly are sequentially arranged at intervals on the upper part of the base along its length direction; the tops of the first elastic plate and the second elastic plate are relatively inclined inwardly arranged, and the positions of the first elastic plate and the second elastic plate located at the upper part thereof are penetrated by a tape traction long hole; the cushion block is arranged between the first elastic plate and the second elastic plate, and its height is located below the tape traction long hole, and a fingerprint collection groove is arranged on the upper surface of the cushion block along the width direction of the base; the slideway is arranged on the surface of the base along the length direction of the base, and a tape traction piece is slidably connected in the slideway, and the other end of the tape traction piece passes through the tape traction long holes on the first elastic plate and the second elastic plate in sequence; the tape support assembly comprises a tape support frame, and the tape support frame is respectively provided with roller placement grooves on both sides along the width of the base, and a roller is arranged between the roller placement grooves, and a white base tape is mounted on the roller.

[0004] The advantages of the utility model compared with the prior art are: compared with the traditional paper fingerprint imprint card ink imprint collection handprint sample, the utility model, by providing a tape support frame for placing the tape, a traction piece for pulling the tape, an elastic plate with rebound elasticity and a fingerprint collection pad adapted to the curvature of the finger, on the one hand, can greatly reduce the practical dilemma of poor fingerprint sample collection quality caused by unfamiliar collection techniques and suspects' non-cooperation, thereby improving the fingerprint sample collection quality; on the other hand, it simplifies the technicians' handprint sample collection process, reduces workload and improves collection efficiency; it has a simple structure, low cost, small size, easy to carry, convenient operation and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] Figure 1 The utility model is a structural schematic diagram of a fingerprint sample collector using a tape method.

[0006] Figure 2 The utility model is a schematic diagram of the disassembled structure of a fingerprint sample collector using a tape method.

[0007] Figure 3 The utility model is a structural schematic diagram of a first elastic plate and a second elastic plate in a fingerprint sample collection device using a tape method, in which arc-shaped notches are arranged. DETAILED DESCRIPTION

[0008] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0009] In the description of the embodiments of the present utility model, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0010] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0011] In the description of the embodiments of the present invention, "multiple" means at least 2.

[0012] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0013] Example:

[0014] Combined with Figure 1-3 The present embodiment discloses a fingerprint sample collector using a tape method, comprising a base 1, wherein a slideway 2, a first elastic plate 3, a cushion block 4, a second elastic plate 5, a bracket 6 and a tape support assembly 7 are sequentially arranged at intervals along the length direction of the upper portion of the base 1; the tops of the first elastic plate 3 and the second elastic plate 5 are arranged to be inclined inwards relative to each other, and a tape traction long hole 8 is arranged through the upper portion of the first elastic plate 3 and the second elastic plate 5, and the tape traction long hole 8 is circumferentially provided with an arc chamfer; the angle between the first elastic plate 3, the second elastic plate 5 and the upper surface of the base 1 is 80°; support sheets 10 are respectively arranged at the connection between the bottom of the first elastic plate 3 and the second elastic plate 5 and the base 1; the cushion block 4 is arranged at the first elastic plate 3, the second elastic plate 5, and the second elastic plate 5. The plate 5 is located at a height below the tape traction long hole 8, and a fingerprint collection groove 401 is arranged on the upper surface of the cushion block 4 along the width direction of the base 1; the slideway 2 is arranged on the surface of the base 1 along the length direction of the base 1, and the tape traction piece 9 is slidably connected in the slideway 2, and the other end of the tape traction piece 9 passes through the tape traction long holes 8 on the first elastic plate 3 and the second elastic plate 5 in turn, and the tape traction piece 9 passes through one end of the second elastic plate 5, and arc-shaped notches 901 are respectively arranged on both sides thereof; the tape support assembly 7 includes a tape support frame 701, and the tape support frame 701 is respectively provided with roller placement grooves 702 on both sides along the width of the base 1, and a roller 703 is arranged between the roller placement grooves 702, and a white base tape 704 is mounted on the roller 703.

[0015] The base 1 is also provided with several drawers 11; the drawers can be used to store fingerprint-specific printing boxes, scissors, transparent films, large rolls of white tape, labels and fingerprint sample storage boxes.

[0016] During the specific implementation, a white base tape is put on the roller with the sticky surface of the tape facing upwards. The tape is stretched to pass over the bracket (lining support function, the bracket is vertically arranged with the base), and the end of the tape is adhered to the lower surface of the right end of the tape traction piece. At the same time, arc-shaped notches are arranged on both sides of the end of the traction piece to facilitate the removal of the tape. At this time, the other end of the tape traction piece is pulled to the left to make the white tape pass through the tape traction long hole on the second elastic plate and be pulled to the upper part of the pad in the fingerprint sample collection area. The tape traction piece is continued to be pulled until the right end of the tape traction piece is pulled out of the tape traction long hole on the first elastic plate for a distance. At this time, the white tape passes through the tape traction long hole on the first elastic plate, and the tape between the second elastic plate and the bracket is cut with scissors. Then the end of the tape is adhered to the second elastic plate upwards (fixing the tape function), and then the tape at the right end of the tape traction piece is removed and adhered upwards On the first elastic plate (arc-shaped notches can be provided on the upper ends of the first elastic plate and the second elastic plate to facilitate the removal of the tape), at this time, a section of white tape with the sticky surface facing upwards has been fixed between the two elastic plates, and the offender presses the finger dipped in ink downwards on the sticky surface of the tape until the fingertip is completely in contact with the fingerprint collection groove on the pad below. During this process, the first elastic plate and the second elastic plate have rebound elasticity to ensure that the sticky surface of the tape is in close and full contact with the front and side surfaces of the finger. Finally, remove the tape, use a plastic transparent sheet of appropriate size to cover and protect the ink fingerprint sample on the sticky surface of the tape, then fill in the name, hand type, finger position, extractor, extraction time, extraction location and other information on the label, and stick it to the glossy surface (back) of the white tape with the extracted fingerprint. At this time, the offender has completed the extraction of one ink sample fingerprint, and can continue to extract the remaining sample fingerprints.

[0017] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A tape fingerprint sample collector, characterized in that: The invention comprises a base, wherein a slideway, a first elastic plate, a cushion block, a second elastic plate, a bracket and a tape support assembly are sequentially arranged at intervals on the upper part of the base along its length direction; the tops of the first elastic plate and the second elastic plate are relatively inclined inwardly, and the first elastic plate and the second elastic plate are provided with a long hole for tape traction at their upper parts; the cushion block is arranged between the first elastic plate and the second elastic plate, and its height is located below the long hole for tape traction, and a fingerprint collection groove is arranged on the upper surface of the cushion block along the width direction of the base; the slideway is arranged on the surface of the base along the length direction of the base, and a tape traction piece is slidably connected in the slideway, and the other end of the tape traction piece passes through the long holes for tape traction on the first elastic plate and the second elastic plate in sequence; the tape support assembly comprises a tape support frame, and roller placement grooves are respectively arranged on both sides of the tape support frame along the width of the base, and rollers are arranged between the roller placement grooves, and white base tape is mounted on the rollers.

2. The tape fingerprint sample collector according to claim 1, characterized in that: The tape traction long hole is circumferentially provided with arc-shaped chamfers.

3. The tape fingerprint sample collector according to claim 1, characterized in that: The included angles between the first elastic plate, the second elastic plate and the upper surface of the base are 80°.

4. The tape fingerprint sample collector according to claim 1, characterized in that: Support sheets are respectively provided at the connection positions between the bottom of the first elastic plate, the second elastic plate and the base.

5. The tape fingerprint sample collector according to claim 1, characterized in that: The tape traction piece passes through one end of the second elastic plate, and arc-shaped notches are respectively arranged on both sides thereof.

6. The tape fingerprint sample collector according to claim 1, characterized in that: A plurality of drawers are also arranged in the base.

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