Circuit board structure special for access control and capable of being secondarily developed

Abstract

The utility model discloses an access control dedicated circuit board structure capable of secondary development, which comprises a board body and a round hole, a stud penetrates through the round hole, the end part of the stud is fixedly connected with a screw head, the stud is sleeved with a spring, the end part of the spring is fixedly connected with a ferrule I, and the ferrule I is fixedly connected with a nut. The first ferrule adjusts the contact strength of the plate body and the screw head through a matching piece. According to the screw, under the cooperation of the spring, the first ferrule and the second ferrule, when the screw head presses the plate body, the force applied to the plate body by the screw head can be distinguished through the distance between the first ferrule and the second ferrule, and therefore when an operator rotates the stud, the screw head is effectively prevented from pressing the plate body to form cracks.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to a circuit board structure dedicated to access control that can be redeveloped. Background Art

[0002] To meet personalized needs, current manufacturers are able to customize electronic access control products according to samples provided by customers to complete the secondary development of electronic access control products.

[0003] When the circuit board is fixed to the housing with bolts, attention should be paid to the tightening force of the bolts. If the tightening force is too large, the circuit board will be pressed and cracked by the screw head of the bolt. Since there are no reference marks on the circuit board, the staff can only use bolts to fix the circuit board to the housing based on experience. Therefore, the risk of the bolt pressing the circuit board and cracking still exists.

[0004] Therefore, it is necessary to improve the traditional circuit board to avoid the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems and to propose a circuit board structure for access control that can be redeveloped.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A circuit board structure for access control that can be redeveloped includes a board body and a circular hole, wherein a stud passes through the circular hole, a screw head is fixedly connected to the end of the stud, a spring is provided on the outer sleeve of the stud, a ferrule is fixedly connected to the end of the spring, and the ferrule adjusts the contact force between the board body and the screw head through a matching piece.

[0008] Preferably, the matching piece includes a second ferrule, the upper surface of which is fixedly connected to the spring, a first fixing block is fixedly connected to the first ferrule, and a notch matched with the first fixing block is formed on the plate.

[0009] Preferably, the second ferrule is fixedly connected to a second fixing block, the second fixing block is provided with a vertical hole, and the first fixing block is fixedly connected to a vertical rod slidably connected to the vertical hole.

[0010] Preferably, a fixing ring is fixedly connected to the plate body, and the center of the fixing ring is opposite to the center of the circular hole.

[0011] Preferably, a rubber gasket is provided on the portion of the ferrule that contacts the plate body.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0013] 1. The present application, through the cooperation of the spring, the first ring and the second ring, can ensure that when the screw head presses the plate body, the force applied by the screw head to the plate body can be distinguished by the distance between the first ring and the second ring. Therefore, when the operator rotates the stud, it is effectively prevented that the screw head presses the plate body to create cracks.

[0014] 2. In the present application, when the vertical rod is inserted into the vertical hole and the fixing block 1 fits into the notch, the ferrule 1 and the ferrule 2 will not rotate even if subjected to external force, thereby effectively preventing the rotation of the ferrule 1 or the ferrule 2 from causing wear to the plate or the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the overall structure of a circuit board provided according to an embodiment of the utility model is shown;

[0016] Figure 2 A schematic diagram of the structure of the screw hole portion on the plate body provided according to an embodiment of the utility model is shown;

[0017] Figure 3 A schematic diagram of the structure of a stud portion provided according to an embodiment of the utility model is shown.

[0018] Legend:

[0019] 1. Plate; 2. Round hole; 3. Fixing ring; 4. Notch; 5. Stud; 6. Screw head; 7. Ring 1; 8. Fixing block 1; 9. Ring 2; 10. Fixing block 2; 11. Spring; 12. Vertical rod; 13. Vertical hole. DETAILED DESCRIPTION

[0020] 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 of 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.

[0021] See also Figure 1-3 , the utility model provides a technical solution:

[0022] A circuit board structure for access control that can be redeveloped includes a board body 1 and a circular hole 2, wherein a stud 5 penetrates the circular hole 2, a screw head 6 is fixedly connected to the end of the stud 5, a spring 11 is provided on the outer sleeve of the stud 5, a ferrule 7 is fixedly connected to the end of the spring 11, and the ferrule 7 adjusts the contact force between the board body 1 and the screw head 6 through a matching piece. With the cooperation of the stud 5 and the screw head 6, the board body 1 is fixed on a shell fixed to the board body 1. A fixing ring 3 is fixedly connected to the board body 1, and the center of the fixing ring 3 is opposite to the center of the circular hole 2. Under the protection of the fixing ring 3, the screw head 6 can be prevented from directly contacting the board body 1.

[0023] Specifically, Figure 1 and Figure 3 As shown, the matching part includes a ferrule 2 9, the upper surface of which is fixedly connected to the spring 11, a fixing block 1 8 is fixedly connected to the ferrule 1 7, and a notch 4 is provided on the plate body 1 to match the fixing block 1 8. When the fixing block 1 8 fits the notch 4, the ferrule 1 7 cannot be rotated under force, so the ferrule 1 7 will not cause wear to the plate body 1 during rotation.

[0024] Specifically, Figure 3 As shown, the second ferrule 9 is fixedly connected with a second fixing block 10, the second fixing block 10 is provided with a vertical hole 13, and the first fixing block 8 is fixedly connected with a vertical rod 12 which is slidably connected with the vertical hole 13. The vertical rod 12 extends into the vertical hole 13, and the first fixing block 8 extends into the notch 4, at which time the positions of the first ferrule 7 and the second ferrule 9 are fixed.

[0025] Specifically, Figure 3 As shown, a rubber gasket is provided on the part where the ferrule 1 7 contacts the plate body 1. Therefore, when the ferrule 1 7 contacts the plate body 1, no wear will occur, thereby playing a protective effect on the plate body 1.

[0026] In summary, the present embodiment provides that the stud 5 is passed through the circular hole 2, and then the ferrule 1 7 and the ferrule 2 9 are put on the stud 5 at the bottom of the plate body 1. The fixing block 1 8 is fitted with the notch 4 on the plate body 1, and then the stud 5 can be rotated so that the housing connected to the stud 5 and the plate body 1 is connected by threads until the screw head 6 presses the plate body 1 downward and the vertical rod 12 extends into the vertical hole 13, wherein the ferrule 1 7 and the ferrule 2 9 do not need to be fitted.

[0027] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A circuit board structure for access control that can be redeveloped, comprising a board body (1) and a circular hole (2), characterized in that: A stud (5) passes through the circular hole (2), the end of the stud (5) is fixedly connected to a screw head (6), a spring (11) is provided on the outer sleeve of the stud (5), the end of the spring (11) is fixedly connected to a ferrule (7), and the ferrule (7) adjusts the contact force between the plate body (1) and the screw head (6) through a matching piece.

2. The access control circuit board structure capable of secondary development according to claim 1 is characterized in that: The matching part comprises a second ferrule (9), the upper surface of which is fixedly connected to a spring (11), a fixing block (8) is fixedly connected to the first ferrule (7), and a notch (4) matching the fixing block (8) is provided on the plate body (1).

3. The access control circuit board structure capable of secondary development according to claim 2 is characterized in that: The second ferrule (9) is fixedly connected to a second fixing block (10), a vertical hole (13) is provided on the second fixing block (10), and the first fixing block (8) is fixedly connected to a vertical rod (12) slidably connected to the vertical hole (13).

4. The access control circuit board structure capable of secondary development according to claim 1 is characterized in that: A fixing ring (3) is fixedly connected to the plate body (1), and the center of the fixing ring (3) is opposite to the center of the circular hole (2).

5. The access control circuit board structure capable of secondary development according to claim 1 is characterized in that: A rubber gasket is provided on the portion of the ferrule 1 (7) that contacts the plate body (1).

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