CN113540749B

CN113540749B - Access control equipment

Info

Publication number: CN113540749B
Application number: CN202010294215.4A
Authority: CN
Inventors: 任欣强
Original assignee: Hangzhou Hikvision Digital Technology Co Ltd
Current assignee: Hangzhou Hikvision Digital Technology Co Ltd
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2022-09-23
Anticipated expiration: 2040-04-15
Also published as: CN113540749A

Abstract

An embodiment of the present invention provides an access control device, including: the shell comprises a front shell and a rear shell which are spliced with each other to form an accommodating cavity; the laser direct forming antenna, the circuit board and the fingerprint identification module are arranged in the accommodating cavity; the circuit board and the fingerprint identification module are fixed to the end part of the first fixing stud through a screw matched with the first fixing stud; the second fixing stud is formed on the inner surface of the laser direct structuring antenna, and the circuit board is fixed to the end part of the second fixing stud through a screw matched with the second fixing stud; the laser direct structuring antenna further comprises a first through hole corresponding to the first fixing stud in position, and the first fixing stud penetrates through the laser direct structuring antenna from the first through hole along the thickness direction of the laser direct structuring antenna so as to limit the laser direct structuring antenna in the direction parallel to the inner surface of the front shell.

Description

Access control equipment

Technical Field

The invention relates to the field of electronic equipment, in particular to access control equipment.

Background

In current electronic equipment, most antennas adopt a board-type structure such as a Printed Circuit Board (PCB) antenna or a Flexible Printed Circuit (FPC) antenna, and since antenna radiation requires a certain space, a PCB board and a structural member above the antennas cannot be a fixed structure, so that the internal space of the electronic equipment needs to be enlarged to fix other elements around the antennas, and the size of the electronic equipment is greatly increased.

Disclosure of Invention

In view of the above, an object of the present invention is to provide an access control device, which is formed by molding an antenna on a plastic profile having a three-dimensional structure, so that the antenna can be used as a fixing structure for other elements, and the internal space of a housing can be fully utilized to form a three-dimensional structure fully attached to a front housing, thereby simplifying the antenna fixing structure and the internal space structure of the housing.

One embodiment of the present invention provides an access control apparatus including:

the shell comprises a front shell and a rear shell which are spliced with each other to form an accommodating cavity;

the laser direct forming antenna, the circuit board and the fingerprint identification module are arranged in the accommodating cavity;

the circuit board and the fingerprint identification module are fixed to the end part of the first fixing stud through a screw matched with the first fixing stud;

the second fixing stud is formed on the inner surface of the laser direct structuring antenna, and the circuit board is fixed to the end of the second fixing stud through a screw matched with the second fixing stud;

the laser direct structuring antenna further comprises a first through hole corresponding to the position of the first fixing stud, and the first fixing stud penetrates through the laser direct structuring antenna from the first through hole along the thickness direction of the laser direct structuring antenna so as to limit the laser direct structuring antenna in the direction parallel to the inner surface of the front shell.

In one embodiment, the ends of the first fixing stud and the second fixing stud are flush, and the thickness of the laser direct structuring antenna is consistent with the length of the first fixing stud.

In one embodiment, the laser direct structuring antenna comprises:

a base plate having an inner surface facing the front case outer surface and an inner surface facing the rear case, the second fixing stud being formed on the inner surface of the base plate;

a plurality of antennas formed on an outer surface and/or an inner surface of the substrate, the plurality of antennas being disposed to be spaced apart from each other.

In one embodiment, the substrate further comprises:

the module shell of the fingerprint identification module is embedded into the first hollow;

the plurality of antennas includes: a first antenna, a second antenna and a third antenna,

the first antenna and the second antenna are positioned on the first side of the first hollow on the substrate, the third antenna is positioned on the second side of the first hollow on the substrate,

the first antenna and the second antenna are formed on the outer surface and the inner surface of the substrate, respectively.

In one embodiment, the inner surface of the substrate further comprises a first groove recessed toward the outer surface, the second antenna being formed in the first groove;

and/or

The outer surface of the substrate further includes a second groove recessed toward the inner surface, the first antenna being formed in the second groove.

In one embodiment, the first fixing studs comprise fingerprint identification module fixing studs arranged at positions corresponding to edges of the first side and the second side of the first hollow,

the fingerprint identification module further includes from the first side and the outside first overlap edge that extends of second side on the top of module casing, first overlap edge covers the tip of fingerprint identification module fixing stud to when fixed to the tip of fingerprint identification module fixing stud, at the perpendicular to the direction of the internal surface of preceding shell is limited laser direct structuring antenna.

In one embodiment, the circuit board further comprises:

the second fretwork, the second fretwork exposes fingerprint identification module with the antenna, the edge of second fretwork with the edge overlap joint of laser direct structuring antenna, with the circuit board be in the perpendicular to during first fixing stud and/or the second fixing stud, limit in the direction of the internal surface of preceding shell laser direct structuring antenna.

In one embodiment, the second fixing stud comprises a circuit board fixing stud, and the position of the circuit board fixing stud corresponds to the edge of the second hollow.

In one embodiment, the inner surface of the front case further comprises:

the first positioning columns correspond to the first fixing studs one by one, and each first positioning column is adjacent to one corresponding first fixing stud;

the circuit board and the fingerprint identification module further comprise positioning holes corresponding to the first positioning columns.

In one embodiment, the antenna is one or more of a radio frequency antenna, a WiFi antenna, and a bluetooth antenna.

As can be seen from the above technical solutions, in the present embodiment, the antenna is not formed on a flat circuit board, but formed on a plastic profile having a three-dimensional structure, so that the LDS antenna in the present embodiment has a basic function of the antenna, and can also be a part of a fixing structure inside the housing through the plastic profile having the three-dimensional structure, so that the LDS antenna not only can be used as a fixing structure for fixing components such as the circuit board and the fingerprint identification module, but also can fully utilize the internal space of the housing to form a three-dimensional structure fully attached to the front housing, thereby achieving the purpose of simplifying the antenna fixing structure and the internal space structure of the housing.

Further, the LDS antenna of the present embodiment does not need a special fixing structure or screw, but is fixed by cooperating with a fixing structure for fixing components such as a circuit board and a fingerprint identification module. The LDS antenna is penetrated through by the first fixing stud to limit the laser direct forming antenna in the direction parallel to the inner surface of the front shell, the circuit board and the fingerprint identification module are fixed to the end part of the first fixing stud to limit the LDS antenna penetrating through the first fixing stud on the end part of the first fixing stud, and therefore the laser LDS antenna is limited in the direction perpendicular to the inner surface of the front shell. Therefore, the fixing of the LDS antenna can be completed while the circuit board and the fingerprint identification module are fixed, the fixing structure is simplified, the installation steps are simplified, and the improvement on the reasonable arrangement of the inner space of the shell is realized.

Drawings

The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention.

Fig. 1 is an exploded view of a first embodiment of the access control device of the present invention.

Fig. 2 is a schematic structural view of a fixed state of the access control device of the present invention.

Fig. 3a and 3b are schematic structural views of a laser direct structuring antenna of a second embodiment of a door access device according to the present invention.

Fig. 4 is an exploded view of a second embodiment of the access control device of the present invention.

Fig. 5 is a sectional view showing a fixed state of the access control device of the present invention.

Detailed Description

In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings, in which like reference numerals refer to like parts throughout.

"exemplary" means "serving as an example, instance, or illustration" herein, and any illustration, embodiment, or steps described as "exemplary" herein should not be construed as a preferred or advantageous alternative.

For the sake of simplicity, the drawings are only schematic representations of the parts relevant to the invention, and do not represent the actual structure of the product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled.

Fig. 1 is an exploded view of a first embodiment of an access control device of the present invention. As shown in fig. 1, the present invention provides an access control apparatus, including:

a housing including a front case 1 and a rear case (not shown) which are coupled to each other to form an accommodation chamber;

the laser direct structuring antenna 10, the circuit board 20 and the fingerprint identification module 30 are arranged in the accommodating cavity;

a first fixing stud 41, the first fixing stud 41 being formed on the inner surface of the front case 1, the circuit board 20 and the fingerprint recognition module 30 being fixed to an end of the first fixing stud 41 by a screw engaged with the first fixing stud 41;

a second fixing stud 42, the second fixing stud 42 being formed on an inner surface of the laser direct structuring antenna 10, the circuit board 20 being fixed to an end of the second fixing stud 42 by a screw fitted to the second fixing stud 42;

the laser direct structuring antenna 10 further includes a first through hole 111 corresponding to the first fixing stud 41, and the first fixing stud 41 penetrates the laser direct structuring antenna 10 from the first through hole 111 along the thickness direction of the laser direct structuring antenna 10 to limit the laser direct structuring antenna 10 in a direction parallel to the inner surface of the front case 1. The circuit board 20 may be provided with through holes 114 through which screws pass.

Laser-Direct-structuring (LDS) antenna is characterized in that a computer is used for controlling the movement of Laser according to the track of a conductive pattern, the Laser is projected on a molded three-dimensional plastic device, and a circuit pattern is activated within a few seconds. Namely, a metal antenna pattern is formed on a molded plastic bracket by directly plating the bracket by using a laser technology.

In this embodiment, the antenna is not formed on a flat circuit board, but formed on a plastic profile with a three-dimensional structure, so that the LDS antenna in this embodiment not only has the basic function of the antenna, but also can be a part of a fixing structure inside the housing through the plastic profile with the three-dimensional structure, so that the LDS antenna not only can be used as a fixing structure for fixing elements such as a circuit board and a fingerprint identification module, but also can fully utilize the internal space of the housing to form a three-dimensional structure fully attached to the front housing, thereby achieving the purpose of simplifying the antenna fixing structure and the internal space structure of the housing.

Specifically, the fixing structure for fixing the components such as the circuit board, the fingerprint identification module and the like comprises a first fixing stud and a second fixing stud, wherein the first fixing stud is formed on the inner surface of the front shell, and the second fixing stud is formed on the LDS antenna, so that it can be known that the LDS antenna can be selected as a part of the fixing structure when the structure of the shell is limited and the fixing structure cannot be formed.

Further, the LDS antenna of the present embodiment does not need a special fixing structure or screw, but is fixed by cooperating with a fixing structure for fixing components such as a circuit board and a fingerprint identification module. The LDS antenna is arranged in a penetrating mode through the first fixing stud to limit the laser direct forming antenna in the direction parallel to the inner surface of the front shell, the circuit board and the fingerprint identification module are fixed to the end portion of the first fixing stud to limit the LDS antenna arranged on the first fixing stud in a penetrating mode, and therefore the laser LDS antenna is limited in the direction perpendicular to the inner surface of the front shell. Therefore, the fixing of the LDS antenna can be completed while the circuit board and the fingerprint identification module are fixed, the fixing structure is simplified, the installation steps are simplified, and the improvement on the reasonable arrangement of the inner space of the shell is realized.

In one embodiment, the ends of the first fixing stud 41 and the second fixing stud 42 are flush, and the thickness of the laser direct structuring antenna 10 corresponds to the length of the first fixing stud 41.

In this way, when the circuit board 20 and the fingerprint identification module 30 are fixed to the end of the first fixing stud 41, the outer surface of the LDS antenna 10 can be attached to the inner surface of the front shell 10, and the inner surface of the LDS antenna 10 is flush with the end of the first fixing stud 41, the circuit board 20 and the fingerprint identification module 30 can abut against the LDS antenna 10 to limit the laser LDS antenna in a direction perpendicular to the inner surface of the front shell, and in this direction, the LDS antenna has no moving allowance.

In a specific embodiment, as shown in fig. 2, it may be selected that not all of the first fixing studs 41 have their ends flush with the second fixing studs 42, but only some of the first fixing studs 41 are formed flush with the ends of the second fixing studs 42. For example, as shown in fig. 2, the first fixing stud protruding from the hollow of the circuit board 20 can be used to fix other components, and therefore, the height thereof can be selected to be higher than the height of the first fixing stud for fixing the circuit board 20, so as to fix other components above the circuit board 20, thereby achieving reasonable utilization of space.

Fig. 3a and 3b are schematic structural views of a laser direct structuring antenna of a second embodiment of a door access device according to the present invention. As shown in fig. 3a and 3b, the laser direct structuring antenna 10 includes:

a base plate 11, the base plate 11 having an outer surface 11a facing the front case 1 and an inner surface 11b facing the rear case, a second fixing stud 42 being formed on the inner surface 11b of the base plate 11;

a plurality of

antennas

12a, 12b, 12c formed on the outer surface 11a and/or the inner surface 11b of the substrate 11, the plurality of antennas being spaced apart from each other.

In the present embodiment, the LDS antenna 10 realizes the functions of fixing itself to the front case 10 and providing fixing studs thereon for fixing other elements with the substrate 11 as a structural body, and realizes the function of simultaneously forming a plurality of antennas thereon by division of the structural area, thereby making the door access device of the present embodiment have wider applicability.

Specifically, the substrate 11 of the LDS antenna may have a three-dimensional solid shape having irregularities, and both side surfaces thereof, even the periphery of the substrate 11, may serve as a formation base of the antenna. Therefore, the LDS antenna 10 in the present embodiment may form at least two antennas by at least separation of the outer surface 11a and the inner surface 11b thereof. Further, the scheme of forming a plurality of antennas spaced apart from each other on the same surface is realized by dividing the surface height of the structure body on the same surface or by forming antennas of different forms.

For example, in the present embodiment, in order to provide adaptation to various kinds of IC (integrated circuit chip) cards, the LDS antenna may include a first antenna 12a which is a 13.56MHz antenna, a second antenna 12b which is a 125KHz antenna, and a third antenna 12c which is a Wifi antenna. The first antenna 12a and the second antenna 12b may be coil antennas, and the third antenna 12c may be a patch antenna. The first antenna 12a and the second antenna 12b may alternatively be formed on the outer surface 11a and the inner surface 11b of the substrate 11, respectively, within the same region, and the third antenna 12c may alternatively be formed on the outer surface 11a or the inner surface 11b of the substrate 11, as long as it is spaced apart from the first antenna 12a or the second antenna 12 b.

Therefore, the door control equipment of the embodiment forms a plurality of antennas on the substrate of the same LDS antenna, the antenna layout is compact and does not influence each other, the space occupied by the antennas can be greatly reduced by integrating the plurality of antennas in the space where the substrate is located, and the door control equipment is very suitable for equipment with a tense internal space. The entrance guard equipment of this embodiment has still retrencied the fixed knot who has the antenna when integrated antenna for the inside component layout of casing is compacter, thereby can avoid the electromagnetic interference between the components and parts, improves the performance of antenna.

The

antennas

12a, 12b, and 12c may be one or more of a radio frequency antenna, a WiFi antenna, and a bluetooth antenna.

Specifically, as shown in fig. 3a and 3b, the substrate 11 further includes:

a first hollow 112, in which the module housing of the fingerprint identification module 30 is embedded;

the plurality of antennas includes: the antenna comprises a first antenna 12a, a second antenna 12b and a third antenna 12c, wherein the first antenna 12a and the second antenna 12b are positioned on the first side of the first hollow 112 on the substrate 11, the third antenna 12c is positioned on the second side of the first hollow 112 on the substrate 11, and the first antenna 12a and the second antenna 12b are respectively formed on the outer surface 11a and the inner surface 11b of the substrate 11.

In this embodiment, since the antenna is formed on both side surfaces of the substrate 11 and the fixing structure is required to be formed thereon, the substrate 11 has a certain thickness, and in order to fully utilize the internal space of the housing, the first hollow 112 for fixing the fingerprint identification module 30 in an embedded manner is formed on the substrate 11, so that the thickness of the LDS antenna when the LDS antenna and the fingerprint identification module 30 are fixed together is much smaller than the sum of the thicknesses of the LDS antenna and the fingerprint identification module 30.

Further, the first hollow 112 is used for forming a partition for a plurality of antennas disposed on the same surface of the substrate 11, in addition to fixing the fingerprint identification module. For example, in the present embodiment, the first antenna 12a and the third antenna 12c may be simultaneously formed on the outer surface 11a of the substrate 11, and the first antenna 12a and the third antenna 12c are respectively located at two opposite sides of the first hollow 112, so that the first hollow 112 and the fingerprint identification module 30 form a separation of the first antenna 12a and the third antenna 12 c.

By such a partition structure, not only the internal space of the housing is fully utilized and the overall thickness of the element is reduced, but also the substrate of the LDS antenna can be divided into a plurality of areas, and by combining with the two side surfaces, at least four different antennas can be formed on the substrate of the LDS antenna of the present embodiment.

In a preferred embodiment shown in fig. 3b, the inner surface 11b of the substrate 11 further comprises a first groove 113 recessed towards the outer surface 11a, the second antenna 12b being formed in the first groove 113.

Alternatively, the outer surface 11a of the substrate 11 may further include a second groove (not shown) recessed toward the inner surface 11b, and the first antenna 12a is formed in the second groove.

In the present embodiment, the second antenna 12b may be a 125KHz antenna, which has a large number of turns, and if it is formed along the surface of the substrate 11, the thickness of the antenna is too large, and the antenna is easily bent or deformed. Therefore, for the antenna with a larger number of turns or a larger thickness, the LDS antenna of the embodiment may form a groove on the substrate thereof for accommodating the antenna, and the groove may be formed by recessing toward the other side surface, so that not only the overall thickness of the substrate may not be increased, but also the antenna distribution on the other side surface may not be affected by the avoidance of the antenna structure.

Referring to fig. 4 and fig. 2, in the present embodiment, the first fixing stud 41 includes a fingerprint identification module fixing stud 411, and the fingerprint identification module fixing stud 411 is disposed at a position corresponding to the edges of the first side and the second side of the first hollow 112.

Correspondingly, the fingerprint recognition module 30 further includes first beads 31 extending outwardly from the first and second sides of the top end of the module case of the fingerprint recognition module 30, the first beads 31 covering the ends of the fingerprint recognition module fixing studs 411 to confine the laser direct structuring antenna 10 in a direction perpendicular to the inner surface of the front case 1 when fixed to the ends of the fingerprint recognition module fixing studs 411 as shown in fig. 5.

Further, the first through hole 111 for the fixing stud 411 of the fingerprint identification module to pass through is disposed at the edge of the first hollow 112 of the substrate 11, wherein the first through hole 111 is disposed at the edge of the first hollow 112, as shown in fig. 3a and 3b, the first through hole 111 may be a half-hole or even a quarter-arc-shaped hole, which is used for limiting and positioning, and such a disposition can simplify the structure of the substrate 11.

In the embodiment shown in fig. 4 and 5, the circuit board 20 further includes:

the second hollow 21 exposes the fingerprint identification module 30 and the

antennas

12a, 12b, 12c, and an edge of the second hollow 21 overlaps an edge of the laser direct structuring antenna 10, so as to limit the laser direct structuring antenna 10 in a direction perpendicular to the inner surface of the front case 1 when the circuit board 20 is fixed to the first fixing stud 41 and/or the second fixing stud 42.

As shown in fig. 4 and 5, the second hollowing out 21 is used to expose an area of the antenna, not an entire area of the substrate 11, so an edge of the second hollowing out 21 may overlap an edge of the LDS antenna 10 to fix the LDS antenna 10 to the front case 10 by pressing the substrate of the LDS antenna 10 when the circuit board 20 is fixed to the first fixing stud 41 and the second fixing stud 42.

The second fixing stud 42 includes a circuit board fixing stud 421, and the position of the circuit board fixing stud 421 corresponds to the edge of the second hollow 21.

The second fixing stud 42 is used to provide a fixing structure for the circuit board at a position where the front shell 10 cannot be provided with the first fixing stud and the circuit board needs the fixing structure. Typically at the edge where the circuit board overlaps LDS antenna 10. For example, in the example shown in fig. 1 and 3b, the circuit board fixing stud 421 is disposed at one side corner of the LDS antenna and beside the third antenna 12 c.

In the above respective embodiments, the following features may be further included.

The inner surface of the front case 10 further includes:

the first positioning columns 43 correspond to the first fixing studs 41 one by one, and each first positioning column 43 is adjacent to one corresponding first fixing stud 41;

the circuit board 20 and the fingerprint recognition module 30 further include a positioning hole 44 corresponding to the position of the first positioning post 43.

The positions of the first positioning posts 43 correspond to the positions of the first fixing studs 41 one by one, and the heights of the first positioning posts can be higher than the heights of the first fixing studs 41, and particularly, the positions can be realized by arranging protrusions on the tops of the first positioning posts. The first positioning column 43 is used for realizing pre-positioning of the LDS antenna, the fingerprint identification module and the circuit board before the screw is matched with the first fixing stud or the second fixing stud. Correspondingly, the positioning hole 44 may thus be a half-hole or a quarter-arc hole as shown in fig. 3a and 3b, which functions to abut against the outer edge of the first positioning stud 43.

The entrance guard's equipment of this embodiment has formed a plurality of antennas on the base plate of same LDS antenna to the antenna layout is compact and do not influence each other, and the space that the integrated a plurality of antennas can significantly reduce the antenna and occupy in the space that the base plate was located is applicable to the equipment that the inner space is nervous very much. The entrance guard equipment of this embodiment has still retrencied the fixed knot who has the antenna when integrated antenna for the inside component layout of casing is compacter, thereby can avoid the electromagnetic interference between the components and parts, improves the performance of antenna.

The LDS antenna of this embodiment not only fully utilizes the inner space of casing through the partition structure of fretwork, has reduced the whole thickness of component, can divide the base plate of LDS antenna into a plurality of regions moreover, then through the combination with both sides surface, can form four different antennas on the base plate of the LDS antenna of this embodiment at least.

In this document, "a" does not mean that the number of the relevant portions of the present invention is limited to "only one", and "a" does not mean that the number of the relevant portions of the present invention "more than one" is excluded.

Unless otherwise indicated, numerical ranges herein include not only the entire range within its two endpoints, but also several sub-ranges subsumed therein.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention and is not intended to limit the scope of the present invention, and equivalent embodiments or modifications such as combinations, divisions or repetitions of the features without departing from the technical spirit of the present invention are included in the scope of the present invention.

Claims

1. An access control device, comprising:

the shell comprises a front shell (1) and a rear shell which are spliced with each other to form an accommodating cavity;

the laser direct structuring antenna (10), the circuit board (20) and the fingerprint identification module (30) are arranged in the accommodating cavity;

a first fixing stud (41), the first fixing stud (41) being formed on an inner surface of the front case (1), the circuit board (20) and the fingerprint recognition module (30) being fixed to an end of the first fixing stud (41) by a screw fitted to the first fixing stud (41);

a second fixing stud (42), the second fixing stud (42) being formed on an inner surface of the laser direct structuring antenna (10), the circuit board (20) being fixed to an end of the second fixing stud (42) by a screw that mates with the second fixing stud (42);

the laser direct structuring antenna (10) further comprises a first through hole (111) corresponding to the position of the first fixing stud (41), and the first fixing stud (41) penetrates through the laser direct structuring antenna (10) from the first through hole (111) along the thickness direction of the laser direct structuring antenna (10) so as to limit the laser direct structuring antenna (10) in the direction parallel to the inner surface of the front shell (1).

2. Entrance guard equipment according to claim 1, characterized in that the ends of the first fixing stud (41) and the second fixing stud (42) are flush, and the thickness of the laser direct structuring antenna (10) corresponds to the length of the first fixing stud (41).

3. Entrance guard equipment according to claim 1, characterized in that the laser direct structuring antenna (10) comprises:

a base plate (11), the base plate (11) having an outer surface (11a) facing the front case (1) and an inner surface (11b) facing the rear case, the second fixing stud (42) being formed on the inner surface (11b) of the base plate (11);

a plurality of antennas (12a, 12b, 12c) formed on the outer surface (11a) and/or the inner surface (11b) of the substrate (11), the plurality of antennas being arranged at a distance from each other.

4. The access control device according to claim 3, characterized in that the substrate (11) further comprises:

a first cutout (112), into which the module housing of the fingerprint recognition module (30) is inserted;

the plurality of antennas includes: a first antenna (12a), a second antenna (12b) and a third antenna (12c),

the first antenna (12a) and the second antenna (12b) are positioned on the first side of the first hollow (112) on the substrate (11), the third antenna (12c) is positioned on the second side of the first hollow (112) on the substrate (11),

the first antenna (12a) and the second antenna (12b) are formed on an outer surface (11a) and an inner surface (11b) of the substrate (11), respectively.

5. The door entry device according to claim 4, wherein the inner surface (11b) of the substrate (11) further comprises a first groove (113) recessed toward the outer surface (11a), the second antenna (12b) being formed in the first groove (113);

and/or

The outer surface (11a) of the substrate (11) further comprises a second recess recessed towards the inner surface (11b), the first antenna (12a) being formed in the second recess.

6. The door access device according to claim 4, characterized in that the first fixing stud (41) comprises a fingerprint identification module fixing stud (411), the fingerprint identification module fixing stud (411) is arranged at a position corresponding to the edges of the first side and the second side of the first cutout (112),

the fingerprint recognition module (30) further comprises first laps (31) extending outwards from the first and second sides of the top end of the module housing, the first laps (31) covering the end of the fingerprint recognition module fixing stud (411) to confine the laser direct structuring antenna (10) in a direction perpendicular to the inner surface of the front housing (1) when being fixed to the end of the fingerprint recognition module fixing stud (411).

7. The door access device according to claim 4, wherein the circuit board (20) further comprises:

a second hollow (21), the second hollow (21) exposes the fingerprint identification module (30) and the antenna (12a, 12b, 12c), the edge of the second hollow (21) overlaps with the edge of the laser direct structuring antenna (10), so that when the circuit board (20) is fixed to the first fixing stud (41) and/or the second fixing stud (42), the laser direct structuring antenna (10) is limited in the direction perpendicular to the inner surface of the front housing (1).

8. The door access device according to claim 7, characterized in that the second fixing stud (42) comprises a circuit board fixing stud (421), and the position of the circuit board fixing stud (421) corresponds to the edge of the second hollow (21).

9. Entrance guard device according to any of claims 1 to 8, characterized in that the inner surface of the front shell (1) further comprises:

the first positioning columns (43) correspond to the first fixing studs (41) one by one, and each first positioning column (43) is adjacent to one corresponding first fixing stud (41);

the circuit board (20) and the fingerprint identification module (30) further comprise positioning holes (44) corresponding to the positions of the first positioning columns (43).

10. Entrance guard equipment according to any of claims 3-8, characterized in that the antennas (12a, 12b, 12c) are one or several of radio frequency antennas, WiFi antennas, Bluetooth antennas.