A driving recorder memory card protection lock device

Abstract

This utility model relates to a memory card protection lock device for a driving recorder, including a movable shaft that moves through the front windshield cover of the recorder; the front end of the movable shaft has a limiting part, and the rear end is coaxially connected to a locking shaft; it also includes a locking cylinder horizontally fixed on the inner side wall of the front panel of the recorder, the inner cavity of the locking cylinder penetrating the front side wall of the front panel and coaxially sleeved on the locking shaft, the rear end face of the locking shaft has multiple elastic extension arms distributed circumferentially, and the rear end of the inner wall of the locking cylinder has a locking cavity for the multiple elastic extension arms to expand radially outward; it also includes a drive shaft that drives the multiple elastic extension arms to expand radially outward and abut against the inner wall of the locking cavity, the drive shaft coaxially passing through the locking shaft and the movable shaft in sequence; in use, not only is the connection strength ensured by the connection between the locking shaft and the locking cylinder, but the cooperation between the drive shaft and the elastic extension arms also prevents the locking shaft from loosening, significantly improving the connection stability between the front windshield cover and the front panel.

Description

Technical Field

[0001] This utility model relates to the field of recorder technology, and in particular to a protective lock device for a driving recorder memory card. Background Technology

[0002] DVRs, as instruments that record video and audio information during vehicle operation, are widely used in vehicles. DVRs installed in cars provide vehicle safety monitoring and combine video recording, audio recording, image splitting (e.g., displaying multiple images captured by multiple cameras installed inside and outside the vehicle), alarms, tire pressure monitoring, network transmission, and GPS support, enabling them to ensure driving safety and provide reliable post-accident analysis. Furthermore, by recording the entire driving process with video and audio, they can provide strong evidence in traffic accidents.

[0003] However, existing dashcam memory card flip-top covers typically use a simple rotating latch structure to connect to the front panel, but this structure lacks robustness and shock resistance. After prolonged driving on bumpy, rough roads, the latches often loosen due to vibration, leading to the accidental opening of the flip-top. This further compromises memory card protection, potentially resulting in loss, or allows dust and foreign objects to enter the various interfaces covered by the flip-top. Therefore, it is necessary to design a new locking structure to address the problems of existing designs. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of the existing technology by providing a driving recorder memory card protection lock device, which can effectively solve the above-mentioned problems.

[0005] To achieve the above requirements, the technical solution adopted by this utility model to solve its technical problem is as follows: A protective lock device for a driving recorder memory card is provided, including a movable shaft that moves through the front windshield cover of the recorder; the front end of the movable shaft has a limiting part, and the rear end is coaxially connected to a locking shaft; It also includes a locking cylinder that is horizontally fixed to the inner sidewall of the front panel of the recorder. The inner cavity of the locking cylinder penetrates the front sidewall of the front panel and is coaxially threaded onto the locking shaft. The rear end face of the locking shaft has a plurality of elastic extension arms distributed circumferentially. The rear end of the inner wall of the locking cylinder has a locking cavity for the plurality of elastic extension arms to expand radially outward. It also includes a drive shaft that drives the plurality of elastic extension arms to expand radially outward and abut against the inner wall of the lock cavity, the drive shaft coaxially passing through the lock shaft and the movable shaft in sequence.

[0006] The driving recorder memory card protection lock device of this utility model has a conical part coaxially and integrally connected to the rear end of the drive shaft. The smaller end of the conical part faces forward. In the locked state, the front end of the drive shaft extends out of the front end of the movable shaft, and the conical part is located in the middle of the plurality of elastic extension arms and presses the plurality of elastic extension arms against the inner wall of the lock cavity.

[0007] The driving recorder memory card protection lock device of this utility model further includes an elastic reset member that provides a forward elastic reset force to the drive shaft.

[0008] The driving recorder memory card protection lock device of this utility model has a cover detachably connected to the rear end of the lock cylinder on the same axis; the elastic reset member is provided on the inner side wall of the cover.

[0009] The driving recorder memory card protection lock device of this utility model includes an elastic reset member that is a spring, one end of which is coaxially connected to the cone portion and the other end of which is connected to the cover.

[0010] The driving recorder memory card protection lock device of this utility model has a through hole on the cover for the cone portion to pass through, and the elastic reset member is a conical spring with its smaller end facing forward and connected to the cone portion.

[0011] The driving recorder memory card protection lock device of this utility model includes a lock cylinder comprising a cylindrical part integrally connected to the front panel, and a metal sleeve coaxially embedded in the rear end of the inner cavity of the cylindrical part; the cover is connected to the rear end of the cylindrical part. The locking shaft extends into the metal sleeve and is coaxially threaded to it, and the locking cavity is located at the rear end of the inner cavity of the metal sleeve.

[0012] The driving recorder memory card protection lock device of this utility model, wherein the lock shaft and the movable shaft are integrally connected.

[0013] The driving recorder memory card protection lock device of this utility model has a limiting part that is circular and coaxially and integrally connected with the front end of the movable shaft. The front side wall of the limiting part is coaxially provided with an internal hexagonal tool groove. When assembled, the front end of the drive shaft passes through the bottom surface of the internal hexagonal tool groove.

[0014] The beneficial effects of this utility model are as follows: In use, the threaded connection between the locking shaft and the locking cylinder not only ensures the structural strength of the connection, but also prevents the locking shaft and locking cylinder from loosening due to vibration through the cooperation of the drive shaft and the elastic extension arm. The two functional structures at the front and rear form a dual protection system, which can significantly improve the connection strength and stability between the front cover and the front panel of the recorder. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a front view of the utility model after it is assembled with the recorder.

[0016] Figure 2 yes Figure 1 AA sectional view.

[0017] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0018] Figure 4 yes Figure 3 Diagram showing the axial separation state of the moving shaft and the drive shaft.

[0019] Figure 5 yes Figure 3 A magnified view of a portion of the lock cylinder in its isolated state. Detailed Implementation

[0020] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0021] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0023] Furthermore, the terms indicating orientation, such as "up," "down," "left," "right," "upper end," "lower end," and "longitudinal," are all based on the posture and position of the device or equipment described in this solution during normal use.

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of this utility model. Obviously, the described embodiments are some, but not all, embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] The preferred embodiment of this utility model is a protective lock device for the memory card of a driving recorder, such as... Figure 1-5 As shown, the device includes a movable shaft 10 that moves back and forth through the front flap 301 of the recorder 300; the front end of the movable shaft 10 has a limiting part 101 to prevent the movable shaft 10 from disengaging from the front flap 301, and a locking shaft 20 is coaxially connected to the rear end of the movable shaft 10; further, the device of this solution also includes a locking cylinder 40 (in existing systems, one end of the front flap 301 is rotatably connected to the front panel 302, and various interfaces and a memory card installation port are provided on the front panel 302 at the position corresponding to the front flap 301) that is horizontally fixed to the inner side wall of the front panel 302 of the recorder 300, and the inner cavity of the locking cylinder 40 penetrates the front side wall of the front panel 302 and is coaxially threaded onto the locking shaft 20 to achieve a threaded connection between the two; further, multiple springs are distributed circumferentially on the rear end face of the locking shaft 20. The elastic extension arm 201 can be formed by directly opening a cross groove or a star groove on the locking shaft 20 axially, or by processing them separately and welding them together. Preferably, this embodiment selects the third method. Furthermore, the rear end of the inner wall of the locking cylinder 40 has a locking cavity 50 for the radial outward expansion of multiple elastic extension arms 201. Specifically, the inner diameter of the locking cavity 50 is larger than the inner diameter of the locking cylinder 40, and the front end of the inner side wall of the elastic extension arm 201 has a strip groove 2011 to increase its deformation ease. Furthermore, the device of this solution also includes a drive shaft 60 that drives multiple elastic extension arms 201 to expand radially outward and abut against the inner wall of the locking cavity 50. The drive shaft 60 coaxially passes through the locking shaft 20 and the movable shaft 10 in sequence.

[0026] In use, the threaded connection between the locking shaft 20 and the locking cylinder 40 not only ensures the structural strength of the connection, but also allows the multiple elastic extension arms 201 to expand radially outward and abut against the inner wall of the locking cavity 50 via the drive shaft 60. This causes the diameter of the shaft structure after the deformation of the multiple elastic extension arms 201 to increase, thus preventing it from moving forward. This matching method can prevent the locking shaft 20 and the locking cylinder 40 from loosening due to vibration, so that the movable shaft 10 can only loosen to a certain extent in the circumferential direction and cannot continue to move forward spirally. This solution provides two locking function structures at the front and rear and forms a dual protection system, which can significantly improve the connection strength and stability between the front cover 301 and the front panel 302 of the recorder 300.

[0027] In this embodiment, a truncated cone portion 61 is coaxially and integrally connected to the rear end of the drive shaft 60. The smaller end of the truncated cone portion 61 faces forward and its diameter is smaller than the distance between the two radially opposite elastic extension arms 201. In the locked state, the front end of the drive shaft 60 extends out of the front end of the movable shaft 10 and the truncated cone portion 61 is located in the middle of the multiple elastic extension arms 201 and presses the multiple elastic extension arms 201 radially outward against the inner wall of the lock cavity 50, thereby preventing the drive shaft 60 and the lock shaft 20 from moving forward and disengaging from the lock cylinder 40.

[0028] In this embodiment, the device further includes an elastic reset member 70 that provides a forward elastic reset force to the drive shaft 60. This member can be a spring, a tension spring, a rubber pad with good elasticity, or a metal elastic strip. Specifically, a cover 80 is detachably connected to the rear end of the lock cylinder 40. The elastic reset member 70 is located on the inner wall of the cover 80. The detachable design of the cover 80 not only facilitates fixing the elastic reset member 70 but also makes assembly and disassembly convenient.

[0029] In this embodiment, preferably, the elastic reset member 70 is a spring, one end of which is coaxially connected to the frustum portion 61 and the other end is connected to the cover 80, so that the frustum portion 61 is always pressed against the middle of the annular structure formed by the multiple elastic extension arms 201, so that the front end of the drive shaft 60 in the initial state extends out of the movable shaft 10.

[0030] Furthermore, the cover 80 is provided with a through hole 81 for the passage of the truncated cone portion 61. The elastic reset member 70 is a conical spring with its smaller end facing forward and connected to the truncated cone portion 61. The diameter of the smaller end of the conical spring is the same as the diameter of the larger end of the truncated cone portion 61. On the rear end face of the truncated cone portion 61 and the inner side wall of the cover 80, a frustum 610 and an annular boss 82 are respectively provided coaxially for the front and rear ends of the conical spring to be fitted. The through hole 81 is located inside the annular boss 82 and the inner walls of the two are flush. By designing the conical spring and arranging its smaller end facing forward, a larger range of motion can be provided for the rearward movement of the drive shaft 60, reducing the influence of the minimum shaft length of the spring on the formation of the drive shaft 60.

[0031] The diameter of the truncated cone 610 is smaller than the diameter of the front end of the conical spring, which serves to position the spring and prevent excessive radial displacement. After assembly, the rear end of the conical spring is directly sleeved and fixed on the annular boss 82. When separating, the truncated cone 61 and the conical spring can be freely separated, and the conical spring can always be kept on the cover 80.

[0032] In this embodiment, the locking cylinder 40 includes a cylindrical portion 41 integrally connected to the front panel 302, and a metal sleeve 42 coaxially embedded in the rear end of the inner cavity of the cylindrical portion 41; the cover 80 is connected to the rear end of the cylindrical portion 41; the locking shaft 20 extends into the metal sleeve 42 and is coaxially threadedly connected to it, and the locking cavity 50 is located at the rear end of the inner cavity of the metal sleeve 42; wherein, the locking shaft 20 and the movable shaft 10 are integrally formed and connected by metal shafts; by setting the metal sleeve 42 to cooperate with the locking shaft 20, the strength of the connection can be further increased.

[0033] In this embodiment, the limiting part 101 is circular and coaxially integrated with the front end of the movable shaft 10. The front side wall of the limiting part 101 is coaxially provided with an internal hexagonal tool groove 1010. When assembled, the front end of the drive shaft 60 passes through the bottom surface of the internal hexagonal tool groove 1010. When disassembly is required, an internal hexagonal wrench is inserted into the limiting part 101 and the cone part 61 is pushed out between the multiple elastic extension arms 201. At this time, the movable shaft 10 can be rotated and the locking shaft 20 can be rotated forward to release the locking cylinder 40.

[0034] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A protective lock device for a driving recorder memory card, characterized in that, The device includes a movable shaft that extends through the front cover of the recorder; the front end of the movable shaft has a limiting part, and the rear end is coaxially connected to a locking shaft; It also includes a locking cylinder that is horizontally fixed to the inner sidewall of the front panel of the recorder. The inner cavity of the locking cylinder penetrates the front sidewall of the front panel and is coaxially threaded onto the locking shaft. The rear end face of the locking shaft has a plurality of elastic extension arms distributed circumferentially. The rear end of the inner wall of the locking cylinder has a locking cavity for the plurality of elastic extension arms to expand radially outward. It also includes a drive shaft that drives the plurality of elastic extension arms to expand radially outward and abut against the inner wall of the lock cavity, the drive shaft coaxially passing through the lock shaft and the movable shaft in sequence.

2. The driving recorder memory card protection lock device according to claim 1, characterized in that, The rear end of the drive shaft is coaxially and integrally connected to a truncated cone portion. The smaller end of the truncated cone portion faces forward. In the locked state, the front end of the drive shaft extends out of the front end of the movable shaft, and the truncated cone portion is located in the middle of the plurality of elastic extension arms and presses the plurality of elastic extension arms against the inner wall of the locking cavity.

3. The driving recorder memory card protection lock device according to claim 2, characterized in that, The driving recorder memory card protection lock device also includes an elastic reset member that provides a forward elastic reset force to the drive shaft.

4. The driving recorder memory card protection lock device according to claim 3, characterized in that, The rear end of the lock cylinder is coaxially and detachably connected to a cover; the elastic reset member is located on the inner side wall of the cover.

5. The driving recorder memory card protection lock device according to claim 4, characterized in that, The elastic reset element is a spring, one end of which is coaxially connected to the frustum portion, and the other end is connected to the cover.

6. The driving recorder memory card protection lock device according to claim 5, characterized in that, The cover has a through hole for the conical part to pass through, and the elastic reset member is a conical spring with its smaller end facing forward and connected to the conical part.

7. The driving recorder memory card protection lock device according to any one of claims 4-6, characterized in that, The lock cylinder includes a cylindrical portion integrally connected to the front panel, and a metal sleeve coaxially embedded at the rear end of the inner cavity of the cylindrical portion; the cover is connected to the rear end of the cylindrical portion. The locking shaft extends into the metal sleeve and is coaxially threaded to it, and the locking cavity is located at the rear end of the inner cavity of the metal sleeve.

8. The driving recorder memory card protection lock device according to claim 7, characterized in that, The locking shaft and the movable shaft are integrally connected.

9. The driving recorder memory card protection lock device according to claim 1, characterized in that, The limiting part is circular and is coaxially and integrally connected to the front end of the movable shaft. The front side wall of the limiting part is coaxially provided with an internal hexagonal tool groove. When assembled, the front end of the drive shaft passes through the bottom surface of the internal hexagonal tool groove.

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