Pen electric fingerprint chip with high cutting and shaving precision

Abstract

The utility model relates to a stylus fingerprint chip with high cutting precision, which belongs to the technical field of fingerprint chips and comprises a flexible circuit board, a packaging bottom ring is fixed at the top end of the flexible circuit board, a fixing mechanism is arranged on the packaging bottom ring, a sealing cover plate is abutted against the top end of the packaging bottom ring, radiating fins are fixed on the sealing cover plate, and the radiating fins are fixed on the flexible circuit board. A moisture absorption mechanism is arranged at the top end of the heat dissipation fin, and heat dissipation silicone grease and a chip body are fixed to the top end of the flexible circuit board. According to the stylus fingerprint chip with the high cutting and shaving precision, the moisture absorption mechanism is arranged on the heat dissipation fins, so that water drops and sweat on the hands of a user can be absorbed by the moisture absorption mechanism, and therefore, the user can use fingers to identify fingerprints, and the user does not need to use other articles to dry the water drops or sweat on the hands; the fixing mechanism is arranged on the packaging bottom ring, so that fixation between the sealing cover plate and the packaging bottom ring is firmer, and meanwhile, the sealing cover plate is convenient to disassemble.

Description

Technical Field

[0001] The utility model relates to the technical field of fingerprint chips, in particular to a notebook fingerprint chip with high cutting accuracy. Background Art

[0002] A laptop computer, also known as a notebook, handheld or laptop computer, is a small, portable personal computer; a fingerprint chip refers to a chip product with embedded fingerprint recognition technology, which can realize fingerprint image acquisition, feature extraction, and feature comparison on-chip. The development of functions that can easily realize fingerprint recognition has greatly reduced the threshold of the fingerprint recognition industry and has a very positive role in promoting the promotion of fingerprint recognition.

[0003] The patent document with announcement number CN214795947U discloses a fingerprint recognition chip, which relates to the field of fingerprint recognition technology, specifically a fingerprint recognition chip, including a flexible circuit board, a packaging bottom ring, and a sealing cover plate. The top of the flexible circuit board is welded with a packaging bottom ring, and the top of the flexible circuit board is fixedly installed with a fingerprint recognition chip body located inside the packaging bottom ring. The top of the flexible circuit board is fixedly installed with a connector located outside the packaging bottom ring. After the fingerprint recognition chip body is installed inside the packaging bottom ring, the connecting clamp ring and the positioning groove cooperate with each other to clamp the connecting clamp ring on the top of the packaging bottom ring. The installation is relatively simple and the operation difficulty is reduced. At the same time, the locking pressure ring is screwed on the outside of the packaging bottom ring and presses the sealing cover plate, which improves the stability of the sealing cover plate after installation. In addition, a rubber sealing ring is clamped inside the positioning groove to improve the sealing of the connection between the sealing cover plate and the packaging bottom ring.

[0004] The above scheme still has the following technical deficiencies: the above scheme is not convenient for absorbing moisture on the fingers. Since there may be water droplets or sweat on the user's fingers during the fingerprint recognition process, this situation will affect the fingerprint recognition effect. The user needs to wipe the water droplets or sweat on his hands before continuing the fingerprint recognition. Based on this, a laptop fingerprint chip with high cutting accuracy is proposed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a laptop fingerprint chip with high cutting accuracy, which has the advantages of conveniently absorbing water droplets or sweat on fingers, thereby solving the problem that water droplets or sweat on fingers affect fingerprint recognition.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a laptop fingerprint chip with high cutting accuracy, comprising a flexible circuit board, a packaging bottom ring is fixed on the top of the flexible circuit board, a fixing mechanism is provided on the packaging bottom ring, a sealing cover plate is abutted on the top of the packaging bottom ring, a heat dissipation fin is fixed on the sealing cover plate, a moisture absorption mechanism is provided on the top of the heat dissipation fin, and heat dissipation silicone grease and a chip body are fixed on the top of the flexible circuit board;

[0007] The desiccant mechanism comprises two installation boxes installed at the top of the heat dissipating fins, desiccant cotton is placed inside the installation boxes, desiccant cloth is fixed between the opposite sides of the two desiccant cottons, fans are fixed on the opposite side walls of the two installation boxes, ventilation holes are opened on the opposite side walls of the two installation boxes, and a drying box is fixed between the top of the inner wall of the installation box and the top of the heat dissipating fins.

[0008] Furthermore, the fixing mechanism includes two installation boxes fixed at the left and right ends of the packaging bottom ring, the internal sliding connection of the installation box is a limit rod, the outer surface of the limit rod is fixed with a baffle, the outer surface of the limit rod is sleeved with a spring, and a handle is fixed at one end of the limit rod. The fixing mechanism also includes a connecting groove opened inside the top side of the packaging bottom ring and two connecting plates fixed at the bottom end of the sealing cover plate.

[0009] Furthermore, the moisture-absorbing cloth is fixed in the vent, and one side of the moisture-absorbing cotton abuts against one side of the drying box.

[0010] Furthermore, the heat dissipation silicone grease covers the outer surface of the chip body, and the top side of the heat dissipation silicone grease is in contact with the bottom side of the sealing cover plate.

[0011] Furthermore, both left and right sides of the interior of the packaging bottom ring are provided with limiting grooves, and the limiting rod can slide in the limiting grooves.

[0012] Furthermore, a limiting hole is provided inside the connecting plate, and the limiting rod abuts against the limiting hole.

[0013] Furthermore, one end of the spring abuts against one side of the baffle, and the other side of the spring abuts against the inner wall of the installation box.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] The laptop fingerprint chip with high cutting accuracy is provided with a moisture absorption mechanism on the heat dissipation fins, so that water droplets and sweat on the user's hands can be absorbed by the moisture absorption mechanism, which is conducive to the user to use the finger to perform fingerprint recognition, and the user does not need to use other objects to wipe the water droplets or sweat on the hands. By providing a fixing mechanism on the packaging bottom ring, the fixing between the sealing cover plate and the packaging bottom ring is made more secure, and the sealing cover plate is convenient to disassemble, which facilitates the inspection and replacement of the chip. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 This is a schematic diagram of the structure of the moisture absorption mechanism of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the fixing mechanism of the utility model;

[0019] Figure 4 It is a three-dimensional schematic diagram of the partial structure of the fixing mechanism of the utility model.

[0020] In the figure: 1 flexible circuit board, 2 packaging bottom ring, 300 fixing mechanism, 301 installation box, 302 limit rod, 303 baffle, 304 spring, 305 handle, 306 connecting groove, 307 connecting plate, 4 sealing cover plate, 5 heat dissipation fin, 600 moisture absorption mechanism, 601 installation box, 602 moisture absorption cotton, 603 moisture absorption cloth, 604 fan, 605 vent, 606 drying box, 7 heat dissipation silicone grease, 8 chip body. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 In this embodiment, a laptop fingerprint chip with high cutting accuracy includes a flexible circuit board 1, a packaging bottom ring 2 is fixed on the top of the flexible circuit board 1, a fixing mechanism 300 is provided on the packaging bottom ring 2, a sealing cover plate 4 is abutted on the top of the packaging bottom ring 2, a heat dissipation fin 5 is fixed on the sealing cover plate 4, a moisture absorption mechanism 600 is provided on the top of the heat dissipation fin 5, a heat dissipation silicone grease 7 and a chip body 8 are fixed on the top of the flexible circuit board 1, the heat dissipation silicone grease 7 covers the outer surface of the chip body 8, and the top side of the heat dissipation silicone grease 7 is in contact with the bottom side of the sealing cover plate 4.

[0023] The fixing mechanism 300 in this embodiment is used to facilitate fixing the sealing cover plate 4 on the flexible circuit board 1. The sealing cover plate 4 is used to seal the package bottom ring 2 to prevent moisture from entering. The heat dissipating fins 5 and the heat dissipating silicone grease 7 are used to dissipate the heat generated by the chip body 8. The moisture absorption mechanism 600 is used to absorb water droplets and sweat on the user's fingers.

[0024] See also Figure 1-2 In order to facilitate the absorption of water droplets and sweat on the user's hands, the moisture absorption mechanism 600 in this embodiment includes two installation boxes 601 installed at the top of the heat dissipation fin 5, and moisture absorbent cotton 602 is placed inside the installation box 601. A moisture absorbent cloth 603 is fixed between the opposite sides of the two moisture absorbent cottons 602. Fans 604 are fixed on the opposite side walls of the two installation boxes 601. Ventilation holes 605 are opened on the opposite side walls of the two installation boxes 601. The moisture absorbent cloth 603 is fixed in the ventilating holes 605. A drying box 606 is fixed between the top of the inner wall of the installation box 601 and the top of the heat dissipation fin 5, and one side of the moisture absorbent cotton 602 is abutted against one side of the drying box 606.

[0025] The desiccant mechanism 600 in this embodiment absorbs water droplets and sweat on the user's hands through the desiccant cloth 603, the desiccant cotton 602 is used to absorb and transfer moisture on the desiccant cloth 603, the drying box 606 is used to desiccant and dry the desiccant cotton 602, and the fan 604 is used to accelerate the air flow in the installation box 601.

[0026] It should be noted that the vents 605 are used to facilitate the flow of air in the installation box 601, and the fan 604 relies on the flow of air to operate.

[0027] See also Figure 1 , Figure 3 and Figure 4 In order to facilitate the fixed installation of the sealing cover plate 4, the fixing mechanism 300 in this embodiment includes two installation boxes 301 fixed at the left and right ends of the packaging bottom ring 2, the interior of the installation box 301 is slidably connected to a limit rod 302, and limit grooves are provided on the left and right sides of the interior of the packaging bottom ring 2, and the limit rod 302 can slide in the limit groove, and a baffle 303 is fixed on the outer surface of the limit rod 302, and a spring 304 is sleeved on the outer surface of the limit rod 302, one end of the spring 304 abuts against one side of the baffle 303, and the other side of the spring 304 abuts against the inner side wall of the installation box 301, and a handle 305 is fixed at one end of the limit rod 302, and the fixing mechanism 300 also includes a connecting groove 306 provided inside the top side of the packaging bottom ring 2 and two connecting plates 307 fixed at the bottom end of the sealing cover plate 4, and a limit hole is provided inside the connecting plate 307, and the limit rod 302 abuts in the limit hole.

[0028] The fixing mechanism 300 in this embodiment fixes the connecting plate 307 by abutting the limiting rod 302 against the limiting hole of the connecting plate 307, thereby fixing the sealing cover plate 4. The movement of the limiting rod 302 can drive the baffle 303 to compress the spring 304, and the spring 304 is used to drive the limiting rod 302 back to the limiting hole.

[0029] It should be noted that the handle 305 is used to facilitate pulling the limiting rod 302 to move, the connecting groove 306 is used to prevent the connecting plate 307, and the limiting groove is used to facilitate the limiting rod 302 to slide.

[0030] The working principle of the above embodiment is:

[0031] When it is necessary to fix the sealing cover plate 4, the handle 305 is pulled, and the handle 305 drives the limiting rod 302 to move, and the limiting rod 302 leaves the limiting groove. At the same time, the limiting rod 302 drives the baffle plate 303 to compress the spring 304, and the spring 304 is deformed. The connecting plate 307 on the sealing cover plate 4 is aligned with the connecting groove 306, and the connecting plate 307 is placed in the connecting groove 306. The handle 305 is released, and the limiting rod 302 enters the limiting hole under the action of the spring 304 deformation recovery; when the user points During fingerprint recognition, the moisture-absorbing cloth 603 absorbs the water droplets and sweat on the user's hands, and the moisture-absorbing cotton 602 transfers the moisture in the moisture-absorbing cloth 603. When wind passes by, the wind drives the fan 604 to rotate, and the fan 604 drives the air to flow in the installation box 601. The moisture in the moisture-absorbing cotton 602 is carried away by the air, and the air containing moisture is absorbed and dried by the drying box 606; the heat dissipating silicone grease 7 absorbs the heat generated by the chip body 8, and the heat dissipating fins 5 further conduct the heat of the heat dissipating silicone grease 7.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A laptop fingerprint chip with high cutting accuracy, comprising a flexible circuit board (1), characterized in that: A packaging bottom ring (2) is fixed to the top of the flexible circuit board (1), a fixing mechanism (300) is provided on the packaging bottom ring (2), a sealing cover plate (4) is abutted against the top of the packaging bottom ring (2), a heat dissipation fin (5) is fixed to the sealing cover plate (4), a moisture absorption mechanism (600) is provided on the top of the heat dissipation fin (5), and heat dissipation silicone grease (7) and a chip body (8) are fixed to the top of the flexible circuit board (1); The desiccant mechanism (600) comprises two installation boxes (601) installed at the top of the heat dissipation fins (5), desiccant cotton (602) is placed inside the installation boxes (601), a desiccant cloth (603) is fixed between the two opposite sides of the desiccant cotton (602), a fan (604) is fixed on the opposite side walls of the two installation boxes (601), a vent (605) is opened on the opposite side walls of the two installation boxes (601), and a drying box (606) is fixed between the top of the inner wall of the installation box (601) and the top of the heat dissipation fins (5).

2. The laptop fingerprint chip with high cutting accuracy according to claim 1, characterized in that: The fixing mechanism (300) comprises two installation boxes (301) fixed to the left and right ends of the packaging bottom ring (2); the interior of the installation box (301) is slidably connected to a limit rod (302); a baffle (303) is fixed to the outer surface of the limit rod (302); a spring (304) is sleeved on the outer surface of the limit rod (302); a handle (305) is fixed to one end of the limit rod (302); the fixing mechanism (300) further comprises a connection groove (306) provided inside the top side of the packaging bottom ring (2) and two connection plates (307) fixed to the bottom end of the sealing cover plate (4).

3. The laptop fingerprint chip with high cutting accuracy according to claim 1, characterized in that: The moisture absorbing cloth (603) is fixed in the ventilation opening (605), and one side of the moisture absorbing cotton (602) is in contact with one side of the drying box (606).

4. The laptop fingerprint chip with high cutting accuracy according to claim 1, characterized in that: The heat dissipation silicone grease (7) covers the outer surface of the chip body (8), and the top side of the heat dissipation silicone grease (7) is in contact with the bottom side of the sealing cover plate (4).

5. The laptop fingerprint chip with high cutting accuracy according to claim 2, characterized in that: Limiting grooves are provided on both left and right sides of the interior of the packaging bottom ring (2), and the limiting rod (302) can slide in the limiting grooves.

6. The laptop fingerprint chip with high cutting accuracy according to claim 2, characterized in that: A limiting hole is provided inside the connecting plate (307), and the limiting rod (302) abuts against the limiting hole.

7. The laptop fingerprint chip with high cutting accuracy according to claim 2, characterized in that: One end of the spring (304) abuts against one side of the baffle (303), and the other side of the spring (304) abuts against the inner wall of the installation box (301).

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