Security box and its shell, FPC and electronic product with the security box
By setting a buffer groove between the inner wall of the outer shell of the security box and the mounting post, and embedding a buffer section on the FPC, the problem of the FPC covering section lifting or misalignment is solved, and a better security protection effect is achieved.
Patent Information
- Application Number
- CN202521796113.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-22
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-22
AI Technical Summary
The FPC cover section of existing security boxes is prone to warping or displacement due to springback force, which can damage the security circuitry and fail to effectively protect internal information.
A buffer groove facing the first direction is provided between the inner wall of the housing and the mounting post, and a buffer section is provided on the FPC so that it is embedded in the buffer groove. The covering section is pasted to the bottom surface of the mounting post. The combination of the limiting effect of the buffer groove and the buffer section ensures that the FPC completely covers the surface of the housing.
It improves the security performance and service life of the security box, prevents the FPC cover section from arching in the middle or lifting at the edges, and ensures that the security line is not damaged.
Smart Images

Figure CN224684483U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of information protection technology, specifically to a security box and its outer shell, an FPC, and an electronic product having the security box. Background Technology
[0002] The secure box achieves its security function by attaching a FPC with internal security circuitry to the surface of the outer shell. When an outsider attempts to open the secure box to steal internal information, the security circuitry inside the FPC covering the secure box will break under external force, thereby severing the circuitry of the entire electronic product such as the card reader and preventing the theft of important information from the card reader and other electronic products.
[0003] like Figure 1 As shown, existing secure boxes have mounting posts inside the outer shell, with mounting holes within the posts. During assembly, the bottom surface of the mounting post abuts against electronic devices such as card readers, and screws are screwed into the mounting holes to attach the secure box to the device. Because the mounting post abuts against and assembles with the device, an FPC (Flexible Printed Circuit) must also be adhered to the surface of the mounting post. Alternative clearance holes are provided on the FPC corresponding to the mounting holes to prevent damage to the FPC circuitry from the screws. In existing technology, the FPC body is typically adhered to the surface of the outer shell, and a covered section is bent into the FPC. This covered section is adhered to the bottom surface of the mounting post to provide security protection for the bottom surface of the mounting post. Figures 2 to 4 As shown, due to the significant springback force of the FPC cover section after bending, and the small contact area between the bottom surface of the mounting post and the FPC cover section, even with adhesive backing, the FPC cover section is still prone to separation from the bottom surface of the mounting post due to the springback force generated by bending over a long period of time. This results in problems such as arching in the middle and curling at the edges, preventing complete coverage of the outer shell surface and hindering the effective protection of the security circuitry within the PFC box. Furthermore, as... Figure 3 As shown, during the FPC pasting process, the FPC cover section cannot be reliably positioned, and the FPC clearance hole is easily misaligned if not handled carefully. Since there are security lines around the FPC clearance hole, when screwing screws to fix electronic products such as security boxes and card readers, the screws can easily damage the security lines around the FPC clearance hole, causing the FPC's security and confidentiality protection function to fail. Utility Model Content
[0004] In order to at least solve one of the problems existing in the prior art, the purpose of this utility model is to provide a security box that ensures that the FPC can completely cover the surface of the outer shell, thereby improving the security performance of the security box.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A security box includes an outer shell and an FPC. The outer shell is provided with a mounting post, and the inner sidewall of the outer shell and the mounting post have a buffer groove recessed in a first direction. The FPC includes an FPC body, a buffer section connected to the FPC body, and a covering section connected to the buffer section. The buffer section is recessed in the first direction. The FPC body is attached to the surface of the outer shell, the buffer section is embedded in the buffer groove, and the covering section is attached to the bottom surface of the mounting post. The first direction is the direction from the bottom surface of the mounting post toward the inner top wall of the outer shell.
[0006] Compared with the prior art, this utility model has at least the following beneficial effects: The secure box has a buffer groove recessed in the first direction between the inner wall of the outer shell and the mounting post, and a corresponding buffer section is set on the FPC. During assembly, the buffer section of the FPC is embedded in the buffer groove, and then the covering section of the FPC is pasted to the bottom surface of the mounting post. Under the cooperation and buffering effect of the buffer groove and the buffer section, the covering section of the FPC is not prone to arching in the middle or lifting at the edges, thereby ensuring that the FPC can completely cover the surface of the outer shell, playing a role in signal security protection inside the secure box, and improving the security protection performance and service life of the secure box.
[0007] The aforementioned security box has an installation hole on the mounting post, and a positioning post on the bottom surface of the mounting post away from the buffer groove. The covering section has a clearance hole corresponding to the mounting hole and a positioning hole corresponding to the positioning post.
[0008] The aforementioned security box has a filling section on the side of the mounting post away from the buffer groove, the side of the filling section away from the buffer groove is a plane, and the positioning post is located on the bottom surface of the filling section.
[0009] In the aforementioned security box, an extension section connects the inner sidewall of the outer shell to the mounting post, and the buffer groove is formed in the extension section.
[0010] In the aforementioned security box, the space between the buffer section and the buffer groove is filled with adhesive.
[0011] In the aforementioned secure box, both sides of the buffer groove are inclined, each side wall is inclined towards the other side wall along a first direction, and there is an arc-shaped transition surface between the side wall and the bottom wall of the buffer groove.
[0012] The aforementioned security box has an arc-shaped transition surface between the buffer groove and the inner wall of the outer shell, as well as between the buffer groove and the mounting post.
[0013] This utility model also discloses a casing and FPC for a security box, which adopts the casing and FPC of the security box described above.
[0014] This utility model also discloses an electronic product, including the aforementioned security box, wherein the electronic product is a card reader, a card swiping device, or a financial payment device.
[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of a security box in the prior art; Figure 2 This is a schematic diagram of a security box in the prior art that exhibits a central arch and raised edges. Figure 3 for Figure 2 A magnified view of a section at point A in the middle; Figure 4 for Figure 2 A magnified view of a section at point B in the middle; Figure 5 This is a schematic diagram of the outer shell structure of the security box according to an embodiment of the present utility model; Figure 6 This is a schematic diagram of the overall structure of the security box according to an embodiment of the present utility model; Figure 7 This is a partial structural diagram of the security box according to an embodiment of the present utility model; Figure 8 This is a cross-sectional view of the security box according to an embodiment of the present utility model; Figure 9 This is a cross-sectional view of a partial structure of the security box according to an embodiment of the present invention.
[0017] Explanation of icon numbers: 100 Outer shell, 110 Mounting post, 111 Mounting hole, 112 Positioning post, 113 Filling section, 120 Extension section, 121 Buffer groove, 130 Inner side wall, 140 Inner top wall; 200FPC, 210FPC main body, 220 buffer section, 230 covering section, 231 clearance hole, 232 positioning hole, 233 outward expansion section; 300 fixing adhesive. Detailed Implementation
[0018] The embodiments of this utility model are described in detail below.
[0019] Example 1 Reference Figures 5 to 9Embodiment 1 of this utility model provides a security box, including a shell 100 and an FPC 200. The FPC 200 is attached to the surface of the shell 100. Specifically, the FPC 200 is attached to the outer surface and inner sidewall 130 of the shell 100 to protect key components and circuit boards inside the shell 100. When an outsider attempts to open the shell 100 to steal internal information, the security circuit covering the shell 100 will break, thereby cutting off the circuit of electronic products such as card readers and preventing internal information from being stolen by the outsider.
[0020] Furthermore, a mounting post 110 is provided inside the outer casing 100 near the inner sidewall 130. The number of mounting posts 110 is unlimited and can be set according to actual needs. The mounting post 110 has a mounting hole 111. An extension section 120 connects the inner sidewall 130 of the outer casing 100 and the mounting post 110. The bottom of the extension section 120 is connected to the inner top wall 140 of the outer casing 100, and the two sides of the extension section 120 are respectively connected to the inner sidewall 130 of the outer casing 100 and the mounting post 110. A buffer groove 121 is provided on the extension section 120, which is recessed in a first direction, wherein the first direction is from the bottom surface of the mounting post 110 toward the inner top wall 140 of the outer casing 100. The FPC200 includes an FPC body 210, a buffer section 220 connected to the FPC body 210, and a cover section 230 connected to the buffer section 220. The buffer section 220 is recessed in a first direction, and the cover section 230 has a clearance hole 231 corresponding to the mounting hole 111. During assembly, the FPC body 210 is attached to the surface of the housing 100, and the buffer section 220 is embedded in the buffer groove 121, which may or may not contact the side wall of the buffer groove 121. The cover section 230 is attached to the bottom surface of the mounting post 110, and the clearance hole 231 on the cover section 230 is aligned with the mounting hole 111 on the mounting post 110. Screws are used to pass through the mounting hole 111 and the clearance hole 231 to assemble the security box onto electronic products such as card readers. When an external party attempts to remove the outer casing 100 by unscrewing the screws, the FPC 200 at this location will also disconnect, thereby cutting off the circuitry of electronic products such as card readers and preventing internal information from being stolen. It should be noted that the terms "side wall," "top wall," and "bottom wall" used in this invention refer only to directions for clarity of description and do not imply that the security box of this invention must be installed and used in a specific manner.
[0021] This secure enclosure has a recessed buffer groove 121 facing a first direction between the inner wall 130 of the outer shell 100 and the mounting post 110. A corresponding buffer section 220 is provided on the FPC 200. During assembly, the buffer section 220 of the FPC 200 is embedded in the buffer groove 121, and then the covering section 230 of the FPC 200 is attached to the bottom surface of the mounting post 110. The buffer section 220 buffers and absorbs bending rebound force. Simultaneously, the buffer groove 121 provides clearance and limits for the buffer section 220, further ensuring its buffering effect. With the combined limiting and buffering effects of the buffer groove 121 and the buffer section 220, the covering section 230 of the FPC 200 is less prone to bulging in the middle or warping at the edges, thus ensuring that the FPC 200 completely covers the surface of the outer shell 100, providing signal security protection for the interior of the secure enclosure and improving its security performance and service life.
[0022] Furthermore, such as Figure 3 and Figure 4 As shown, it is evident that in the prior art, the side of the mounting post near the inner side of the housing is curved, and the outer diameter of the mounting post is similar to the outer diameter of the FPC cover section, resulting in a small contact area between the FPC cover section and the bottom surface of the mounting post. In contrast, in this invention, referring to... Figures 5 to 7 Based on the existing mounting post, a filling section 113 is provided on the side of the mounting post 110 away from the buffer groove 121. The side of the filling section 113 away from the buffer groove 121 is flat, which means that the original arc-shaped side of the mounting post is filled and expanded, increasing the bottom area of the mounting post 110, thereby increasing the contact area between the cover section 230 and the bottom surface of the mounting post 110. At the same time, a positioning post 112 is provided on the bottom surface of the mounting post 110 away from the buffer groove 121, and a positioning hole 232 corresponding to the positioning post 112 is provided on the cover section 230. During assembly, the positioning hole 232 is fitted onto the positioning post 112, so that the cover section 230 can be reliably positioned. The clearance hole 231 on the cover section 230 can be perfectly aligned with the mounting hole 111 on the positioning post 112, thereby avoiding the situation where the clearance hole 231 is misaligned, which could cause the screw to damage the safety circuit next to the clearance hole 231, thus ensuring the security performance of the security box. Furthermore, since the positioning post 112 is located on the bottom surface of the mounting post 110 away from the buffer groove 121, it means that both sides of the covering section 230 can be positioned, and the buffer section 220 can provide the covering section 230 with a pulling force in the first direction. Through the positioning and limiting on both sides, it can be further ensured that the covering section 230 can be completely attached to the bottom surface of the mounting post 110, and there will be no situation of arching in the middle or lifting at the edges.
[0023] Furthermore, referring to Figure 7 and Figure 9When the buffer section 220 is embedded in the buffer groove 121, the bottom of the buffer section 220 is suspended and does not contact the bottom surface of the buffer groove 121. The buffer section 220 is not adhesive-backed; instead, a fixing adhesive 300 is filled between the buffer section 220 and the buffer groove 121. The fixing adhesive 300 ensures that the buffer section 220 remains concave and provides a certain cushioning effect. Except for the buffer section 220, all other parts of the FPC 200 are adhesive-backed. After adhesive backing, the FPC 200 can be adhered to the surface of the outer shell 100, serving to protect the internal space of the security box.
[0024] Furthermore, both side walls of the buffer groove 121 are inclined surfaces, with each side wall tilting towards the other side wall along a first direction, and an arc-shaped transition surface between the side wall and the bottom wall of the buffer groove 121. The two opposing inclined side walls facilitate the embedding of the buffer section 220 and also provide a limiting surface for the buffer section 220. The bottom surface of the buffer groove 121 near the buffer section 220 can be either flat or curved. There are arc-shaped transition surfaces between the buffer groove 121 and the inner side wall 130 of the outer shell 100, and between the buffer groove 121 and the mounting post 110, to facilitate the embedding of the buffer section 220 within the buffer groove 121.
[0025] Example 2 Embodiment 2 of this utility model discloses a casing 100 for a security box, which adopts the casing 100 of the security box in Embodiment 1 above. Specifically, refer to... Figure 5 The outer casing 100 contains a mounting post 110 with mounting holes 111. An extension section 120 is provided between the mounting post 110 and the inner wall 130 of the outer casing 100. A buffer groove 121 recessed in a first direction is provided on the extension section 120. The first direction is from the bottom surface of the mounting post 110 towards the inner top wall 140 of the outer casing 100. Furthermore, both sides of the buffer groove 121 are inclined surfaces, each side wall sloping towards the other side wall along the first direction, and there is an arc-shaped transition surface between the side wall and the bottom wall of the buffer groove 121. The bottom surface of the buffer groove 121 near the buffer section 220 can be either flat or curved. Arc-shaped transition surfaces are present between the buffer groove 121 and the inner wall 130 of the outer casing 100, and between the buffer groove 121 and the mounting post 110. Furthermore, a filling section 113 is provided on the side of the mounting post 110 away from the buffer groove 121, and the side of the filling section 113 away from the buffer groove 121 is flat. A positioning post 112 is provided on the bottom surface of the mounting post 110 away from the buffer groove 121.
[0026] Example 3 Embodiment 3 of this utility model discloses an FPC200 for a security box, which adopts the FPC200 in the security box described in Embodiment 1 above. Specifically, refer to... Figures 5 to 9The FPC200 includes an FPC body 210, a buffer section 220 connected to the FPC body 210, and a cover section 230 connected to the buffer section 220. The buffer section 220 is recessed in a first direction. The cover section 230 has a clearance hole 231 corresponding to the mounting hole 111 and a positioning hole 232 corresponding to the positioning post 112. On the side of the cover section 230 away from the buffer section 220, there is an expanding section 233 corresponding to the filling section 113 on the positioning post 112. The shape of the expanding section 233 corresponds to the shape of the bottom surface of the filling section 113, so that the cover section 230 can completely fit the bottom surface of the mounting post 110. Specifically, the positioning hole 232 is formed on the expanding section 233.
[0027] Example 4 Embodiment 4 of this utility model discloses an electronic product, including the aforementioned security box, wherein the electronic product is a card reader, a card swiping device, or a financial payment device.
[0028] It should be noted that in the description of this utility model, any descriptions of orientation, such as up, down, front, back, left, right, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation of this utility model.
[0029] In the description of this utility model, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is mentioned, it is only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0031] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A security box, characterized in that, The device includes a housing (100) and an FPC (200). The housing (100) has a mounting post (110) inside. The inner sidewall (130) of the housing (100) and the mounting post (110) have a buffer groove (121) recessed in a first direction. The FPC (200) includes an FPC body (210), a buffer section (220) connected to the FPC body (210), and a cover section (230) connected to the buffer section (220). The buffer section (220) is recessed in the first direction. The FPC body (210) is attached to the surface of the housing (100). The buffer section (220) is embedded in the buffer groove (121). The cover section (230) is attached to the bottom surface of the mounting post (110). The first direction is the direction from the bottom surface of the mounting post (110) toward the inner top wall (140) of the housing (100).
2. The security box according to claim 1, characterized in that, The mounting post (110) has a mounting hole (111), and a positioning post (112) is provided on the bottom surface of the mounting post (110) away from the buffer groove (121). The covering section (230) has a clearance hole (231) corresponding to the mounting hole (111) and a positioning hole (232) corresponding to the positioning post (112).
3. The security box according to claim 2, characterized in that, The mounting post (110) has a filling section (113) on the side away from the buffer groove (121), the side of the filling section (113) away from the buffer groove (121) is a plane, and the positioning post (112) is located on the bottom surface of the filling section (113).
4. The security box according to claim 1, characterized in that, An extension section (120) is connected between the inner sidewall (130) of the outer casing (100) and the mounting post (110), and the buffer groove (121) is formed in the extension section (120).
5. The security box according to any one of claims 1-4, characterized in that, The buffer section (220) and the buffer groove (121) are filled with a fixing adhesive (300).
6. The security box according to any one of claims 1-4, characterized in that, Both sides of the buffer groove (121) are inclined surfaces, each side wall is inclined towards the other side wall in a first direction, and there is an arc-shaped transition surface between the side wall and the bottom wall of the buffer groove (121).
7. The security box according to any one of claims 1-4, characterized in that, The buffer groove (121) and the inner wall (130) of the outer shell (100) have arc-shaped transition surfaces, as do the buffer groove (121) and the mounting post (110).
8. The outer shell of a security box, characterized in that, The outer shell (100) of the security box as described in any one of claims 1-7 is adopted.
9. An FPC for a security box, characterized in that, The FPC (200) in the security box as described in any one of claims 1-7 is adopted.
10. An electronic product, characterized in that, Includes the security box as described in any one of claims 1-7, wherein the electronic product is a card reader, a card swiping device, or a financial payment device.