Entrance guard easy to assemble

Abstract

The utility model discloses an easy-to-assemble entrance guard, which comprises a front cover, a mounting cavity arranged on the front cover, a PCB (Printed Circuit Board) arranged in the mounting cavity, a plurality of positioning convex columns symmetrically arranged in the mounting cavity, positioning notches arranged on the edges of the left side and the right side of the PCB and capable of being clamped with the corresponding positioning convex columns, and a bottom cover pressed on the rear side of the PCB, a rear cover covers the rear side of the bottom cover, screw columns extending backwards are arranged at the four corners of the mounting cavity respectively, and screw holes corresponding to the locking screw columns are formed in the four corners of the rear cover respectively. The utility model aims to provide a PCB (printed circuit board) which can be more easily aligned and installed through the positioning convex columns and the positioning notches, ensures that the PCB is accurately fixed at a position, avoids faults or damages caused by looseness or instability, and can enable the assembly process to be faster. Due to the fact that the assembling process is simpler and more convenient, the maintenance cost and the maintenance time can be reduced when parts need to be maintained or replaced.

Description

Technical Field

[0001] The utility model relates to the field of door access control equipment, in particular to an easy-to-assemble door access control. Background Art

[0002] With the continuous advancement of technology, modern access control technology has become an important part of various places, from corporate office buildings to schools, hospitals and residential communities, access control systems are widely used to ensure security management. Common access control devices usually provide a variety of convenient identity authentication methods such as card recognition, fingerprint recognition or password recognition to ensure the security and effectiveness of management.

[0003] The internal structure of existing access control equipment usually includes a PCB board and a series of control modules, as well as various necessary components such as power supply components. However, the fixing method of these components is a problem worthy of attention. In the current design, separate screws or buckles are usually used to fix the internal components, which results in many components requiring a large number of screws or buckles to be fixed. This method is inconvenient in both assembly and maintenance. Especially in large-scale production, workers need to repeatedly tighten many screws, which is a lot of work. This fixing method leads to low production efficiency and increases the complexity of assembly; and the buckles are easily damaged during disassembly, which also affects the convenience of operation during maintenance.

[0004] Therefore, it is very necessary to optimize and improve the fixing method of the internal structure of the access control equipment. Utility Model Content

[0005] The purpose of the utility model is to provide a simpler and more efficient way to fix the internal structure of the access control device, so as to improve production efficiency, assembly convenience, and reduce maintenance costs and maintenance time. The easy assembly feature of the utility model will help speed up the assembly process and reduce the time and cost required for maintenance.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following scheme: an easily assembled access control, including a front cover, a concave installation cavity is provided on the back of the front cover, a PCB circuit board is installed in the installation cavity, a plurality of positioning bosses are symmetrically provided in the installation cavity, and positioning notches that can be engaged with corresponding positioning bosses are provided on the left and right edges of the PCB circuit board, a bottom cover is pressed on the rear side of the PCB circuit board, and a back cover that can close the opening of the installation cavity is covered on the back side of the bottom cover, and yield grooves are respectively provided at the four corners of the bottom cover, and screw columns that can extend backwards along the corresponding yield grooves are respectively provided at the four corners of the installation cavity, and screw holes corresponding to the locking screw columns are respectively provided at the four corners of the back cover, and locking screws are respectively passed through the screw holes and threadedly connected with the corresponding locking screw columns.

[0007] As a further solution of the utility model, an embedding groove is provided on the back of the rear cover, and a mounting bracket for fixing on the vertical surface is detachably embedded in the embedding groove.

[0008] As a preferred solution of the utility model, a notch is provided at the bottom end of the rear cover, a fixing portion that can be inserted into the notch is provided at the bottom end of the mounting bracket, a through hole penetrating upward is provided at the bottom of the front cover, a connecting screw is passed through the through hole and threadedly connected to the fixing portion, a snap-in groove is provided at the top of the embedding groove, and a hook that can be snapped into the snap-in groove is provided at the top of the mounting bracket.

[0009] As a further solution of the utility model, a number keypad area and a card swiping sensing area are provided on the front side of the front cover.

[0010] As a preferred solution of the utility model, a fingerprint recognition and reading unit is provided on the front side of the front cover below the numeric keypad area.

[0011] As a preferred solution of the utility model, rearwardly extending connecting studs are respectively provided at the top and bottom of the installation cavity, and connecting holes corresponding to the connecting studs are respectively provided at the top and bottom of the bottom cover, and the connecting holes are connected to the corresponding connecting studs by passing screws.

[0012] In summary, the utility model has the following beneficial effects compared to the prior art: the utility model can more easily align and install the PCB circuit board by means of positioning bosses and positioning slots, ensuring that the PCB circuit board is accurately fixed in position, and avoiding failure or damage caused by looseness or instability. Compared with the previous method of screwing a lot of screws or setting buckles, this simple design has a more obvious effect. The design of positioning bosses and positioning slots can make the assembly process faster, because there is no need to align and tighten multiple screws one by one or adjust the position of the buckles. It is only necessary to press the bottom cover and the back cover on the PCB circuit board one by one, and then screw in the locking screws at the four corners to complete the assembly of the access control device, which effectively improves the assembly efficiency. In addition, because the assembly process is simpler, maintenance personnel can operate more quickly when repairs or replacements of parts are needed, thereby reducing maintenance costs and maintenance time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional view of the front side of the utility model.

[0014] Figure 2 It is a three-dimensional view of the back side of the utility model.

[0015] Figure 3 It is a cross-sectional view of the utility model.

[0016] Figure 4 This is one of the exploded views of the present invention, and an enlarged view of a local area in the figure.

[0017] Figure 5 This is the second exploded view of the present utility model.

[0018] Figure 6 This is the third exploded view of the present utility model.

[0019] Figure 7 for Figure 3 Magnified view at A in the middle.

[0020] Explanation of the reference numerals: 1. front cover; 2. mounting cavity; 3. PCB circuit board; 4. bottom cover; 5. back cover; 6. locking screw; 7. mounting bracket; 8. fingerprint identification reading part; 11. through hole; 12. numeric keypad area; 13. card swiping sensing area; 14. connecting stud; 21. positioning boss; 22. screw column; 31. positioning notch; 41. clearance groove; 42. connecting hole; 51. screw hole; 52. embedding slot; 53. notch; 54. snap-in slot; 70. through hole; 71. fixing part; 72. connecting screw; 73. hook. DETAILED DESCRIPTION

[0021] The following specific implementation contents provide a variety of different embodiments or examples for implementing the utility model. Of course, these are only embodiments or examples and are not intended to be limiting. In addition, repeated reference numerals may be used in different embodiments, such as repeated numbers and / or letters. These repetitions are for the purpose of simply and clearly describing the present invention and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0022] In addition, spatially related words may be used, such as "below", "lower side", "from the inside out", "above", "upper side" and similar words. These relative words are for the convenience of describing the relationship between one element or feature and another element or feature in the drawings. These spatially related words include different orientations of the device in use or operation, as well as the orientations described in the drawings. The device may be turned to different orientations, rotated 90 degrees or other orientations, and the spatially related adjectives used therein may also be interpreted in the same way. Therefore, it cannot be understood as a limitation of the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0023] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods: Figures 1 to 7The illustrated easy-to-assemble access control comprises a front cover 1, a concave installation cavity 2 is provided on the back of the front cover 1, a PCB circuit board 3 is installed in the installation cavity 2, a numeric keypad area 12 and a card swiping sensing area 13 are provided on the front of the front cover 1 for signal connection with the PCB circuit board 3, and a fingerprint recognition reading unit 8 is provided on the front of the front cover 1 below the numeric keypad area 12. In order to facilitate the installation of the PCB circuit board 3, a plurality of positioning bosses 21 are symmetrically provided in the installation cavity 2, and positioning notches 31 that can be snapped together with the corresponding positioning bosses 21 are provided on the left and right side edges of the PCB circuit board 3. The mutual snapping of the positioning bosses 21 and the positioning notches 31 can make it easier to align and install the PCB circuit board during the assembly process, which is more convenient than the previous method of screwing a lot of screws or fixing the PCB circuit board with buckles. A bottom cover 4 is pressed against the back side of the PCB circuit board 3, and the edges of the bottom cover 4 are attached and pressed against the PCB circuit board 3. A back cover 5 that can close the opening of the installation cavity 2 is covered on the back side of the bottom cover 4. The back cover 5 presses the bottom cover 4, and is provided with a clearance groove 41 at the four corners of the bottom cover 4. Screw columns 22 that can extend backward along the corresponding clearance grooves 41 are provided at the four corners of the installation cavity 2. Screw holes 51 corresponding to the locking screw columns 22 are provided at the four corners of the back cover 5. When assembling, the back cover 5 is pressed against the bottom cover 4 to cover the installation cavity 2, and locking screws 6 are respectively inserted into the screw holes 51 and threadedly connected with the corresponding locking screw columns 22, so as to realize the assembly of the access control device. This fixing method that does not require many screws to be screwed or buckles to be set has obvious advantages in simplifying the assembly process of the access control device, improving efficiency and reducing maintenance costs.

[0024] Among them, Figures 2 to 6 As shown in , an embedding groove 52 is provided at the back of the rear cover 5, and a mounting bracket 7 for fixing on the facade is detachably embedded in the embedding groove 52, and through holes 70 for screws are distributed on the mounting bracket 7. Specifically, a notch 53 is provided at the bottom end of the rear cover 5, and a fixing portion 71 that can be inserted into the notch 53 is provided at the bottom end of the mounting bracket 7. A through hole 11 that penetrates upward is provided at the bottom of the front cover 1, and a connecting screw 72 is passed through the through hole 11 and is threadedly connected to the fixing portion 71. A clamping groove 54 is provided at the top of the embedding groove 52, and a hook 73 that can be clamped into the clamping groove 54 is provided at the top of the mounting bracket 7.

[0025] In addition, if Figures 4 to 6As shown, in order to make the bottom cover 4 better fit and press against the PCB circuit board 3, so as to continue to install the back cover 5 or connect the circuits, the top and bottom of the installation cavity 2 are respectively provided with connecting studs 14 extending backwards, and the top and bottom of the bottom cover 4 are respectively provided with connecting holes 42 corresponding to the connecting studs 14, and the connecting holes 42 are connected to the corresponding connecting studs 14 by passing screws.

[0026] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An easily assembled access control system, comprising a front cover (1), a concave mounting cavity (2) being provided on the back of the front cover (1), a PCB circuit board (3) being installed in the mounting cavity (2), and characterized in that: A plurality of positioning bosses (21) are symmetrically arranged in the installation cavity (2); positioning notches (31) capable of engaging with corresponding positioning bosses (21) are arranged at the left and right edges of the PCB circuit board (3); a bottom cover (4) is pressed against the rear side of the PCB circuit board (3); a rear cover (5) capable of closing the opening of the installation cavity (2) is covered on the rear side of the bottom cover (4); four corners of the bottom cover (4) are respectively provided with clearance grooves (41); four corners of the installation cavity (2) are respectively provided with screw columns (22) capable of extending backwards along the corresponding clearance grooves (41); four corners of the rear cover (5) are respectively provided with screw holes (51) corresponding to the locking screw columns (22); locking screws (6) are respectively passed through the screw holes (51) and are threadedly connected with the corresponding locking screw columns (22).

2. The easily assembled access control system according to claim 1, characterized in that: An embedding groove (52) is provided on the back of the rear cover (5), and a mounting bracket (7) for fixing on the vertical surface is detachably embedded in the embedding groove (52).

3. The easily assembled access control system according to claim 2, characterized in that: A notch (53) is provided at the bottom end of the rear cover (5), a fixing portion (71) capable of being inserted into the notch (53) is provided at the bottom end of the mounting bracket (7), a through hole (11) extending upward is provided at the bottom of the front cover (1), a connecting screw (72) is passed through the through hole (11) and is threadedly connected to the fixing portion (71), a snap-fitting groove (54) is provided at the top of the embedding groove (52), and a hook (73) capable of being snapped into the snap-fitting groove (54) is provided at the top of the mounting bracket (7).

4. An easily assembled access control system according to any one of claims 1 to 3, characterized in that: A digital keypad area (12) and a card swiping sensing area (13) are provided on the front side of the front cover (1).

5. The easily assembled access control system according to claim 4, characterized in that: A fingerprint recognition and reading unit (8) is provided on the front side of the front cover (1) below the digital keypad area (12).

6. The easily assembled access control system according to claim 1, characterized in that: Connecting studs (14) extending backwards are respectively provided at the top and bottom of the installation cavity (2), and connecting holes (42) corresponding to the connecting studs (14) are respectively provided at the top and bottom of the bottom cover (4), wherein the connecting holes (42) are connected to the corresponding connecting studs (14) by screws passing therethrough.

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