Helmet lock

Abstract

The utility model relates to the technical field of helmet locks, in particular to a helmet lock which comprises a cam and a spring bolt, and a push rod is arranged on the cam. A spring bolt groove used in cooperation with the push rod is formed in the spring bolt, and the spring bolt conducts linear motion through the push rod and an elastic piece installed on the push rod to achieve unlocking and two-time locking. According to the utility model, the elastic piece is arranged on the spring bolt and is matched with the motor, so that manual pressing type sliding locking and re-locking by the motor after the helmet induces that the helmet is in place can be realized, the manual pressing type sliding locking state is added, a user can directly sense whether the helmet is locked, and the motor is re-locked after the helmet induces that the helmet is in place; the locking state of the helmet can be determined again, and the safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of helmet lock, especially a helmet lock. BACKGROUND

[0002] Chinese patent publication number CN221298877U discloses a lock structure and a helmet lock, the lock structure includes a rotating body and a lock bar, the rotating body is eccentrically provided with a push rod, the lock bar is provided with a sliding groove matched with the push rod, when the rotating body rotates, the push rod slides in the sliding groove and drives the lock bar to make linear motion to lock or unlock. The patent realizes one-time locking by motor driving, and the user cannot sense whether the helmet is locked. SUMMARY

[0003] The utility model solves the problem in the prior art, and provides a helmet lock, which is manually pressed and slid to be locked by setting an elastic element on a lock tongue and cooperating with a motor, and the helmet is locked again by the motor after sensing that the helmet is in position, so that the state of manually pressing and sliding to be locked is added, the user can directly feel whether the helmet is locked, and the helmet is locked again by the motor after sensing that the helmet is in position, so that the locking state of the helmet can be ensured again, and safety is improved.

[0004] To solve the above technical problems, the utility model is realized by the following technical scheme: a helmet lock, comprising:

[0005] A cam is provided with a push rod;

[0006] A lock tongue is provided with a lock tongue groove matched with the push rod, and the lock tongue is linearly moved to be unlocked and locked twice by the push rod and the elastic element mounted thereon.

[0007] As a preferred scheme, a driving mechanism and a transmission mechanism are further included, and the driving mechanism drives the cam to rotate through the transmission mechanism.

[0008] As a preferred scheme, a PCBA board, a cam magnet and a lock tongue magnet are further included, two Hall elements for sensing the cam magnet and the lock tongue magnet respectively are arranged on the PCBA board, the cam magnet is mounted on the cam, and the lock tongue magnet is mounted on the lock tongue.

[0009] As a preferred scheme, the cam is provided with two push rods symmetrically along the center, the lock tongue includes a first lock tongue and a second lock tongue which are staggered and oppositely arranged, the first lock tongue and the second lock tongue are both provided with a lock tongue groove in the shape of a Chinese character "shan", and the two push rods respectively extend into the two lock tongue grooves to synchronously drive the first lock tongue and the second lock tongue to make linear motion.

[0010] As a preferred scheme, the lock tongue is mounted in the lock shell, a spring cavity is formed on the lock tongue, the elastic member is mounted in the spring cavity and one end of the elastic member abuts against the inner wall of the spring cavity, a pressing block is arranged on the side of the spring cavity away from the movement direction of the lock tongue and the pressing block is integrally formed with the lock shell.

[0011] As a preferred scheme, in the unlocking state, the cam rotates by a set angle, the two push rods tend to be horizontal and are located in the second lock tongue grooves of the first lock tongue and the second lock tongue and are close to the side of the partition plate.

[0012] As a preferred scheme, in the helmet-removing state, the cam rotates by a set angle, the two push rods tend to be vertical and are located in the second lock tongue grooves of the first lock tongue and the second lock tongue and are close to the side of the partition plate.

[0013] As a preferred scheme, in the fully-locked state, the cam rotates by a set angle, the two push rods tend to be vertical and are located in the first lock tongue grooves of the first lock tongue and the second lock tongue and are close to the side of the partition plate.

[0014] Compared with the prior art, the utility model discloses the elastic member is arranged on the lock tongue, and the motor can realize manual press formula sliding lock and helmet sensing in position and then locking by the motor again, and the state of manual press formula sliding lock is added, and the user can directly feel whether the helmet is locked, and the helmet sensing in position and then locking by the motor again can again confirm the helmet locking state, and the safety is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structure schematic diagram of the utility model;

[0016] Figure 2 It is the schematic diagram of the utility model unlocking state;

[0017] Figure 3 It is the schematic diagram of the utility model locking helmet state;

[0018] Figure 4 It is the schematic diagram of the utility model fully-locked state;

[0019] Figure 5 It is the position relation schematic diagram of the lock tongue, the cam and the PCBA board of the utility model;

[0020] Figure 6 It is the position relation schematic diagram of the elastic member and the lock shell cavity of the utility model;

[0021] Figure 7 It is the driving mechanism, transmission mechanism installation position schematic diagram of the utility model.

[0022] In the drawing:

[0023] 1. cam, 11. push rod, 2. lock tongue, 21. lock tongue slot, 211. first lock tongue slot, 212. second lock tongue slot, 213. partition, 22. elastic member, 2-1. first lock tongue, 2-2. second lock tongue, 3. lock shell, 31. pressing block, 32. shell cavity, 33. front cover plate, 34. rear cover plate, 4. driving mechanism, 5. transmission mechanism, 6. PCBA board, 61. Hall element, 7. cam magnet, 8. lock tongue magnet. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0025] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0026] Unless specifically stated otherwise, the relative arrangement of components and steps, numerical expressions, and numerical values set forth in the various embodiments described herein are not limiting. It should be understood that the various parts shown in the drawings are not necessarily drawn to scale in proportion. The technology, methods and devices known to those skilled in the relevant art can not be discussed in detail, but should be considered as part of the authorized specification. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0027] In the description of the utility model, it needs to be understood that the directions such as '' front, back, up, down, left, right '' '' horizontal, vertical, perpendicular, horizontal '' and '' top, bottom '' and the like indicated direction or positional relationship usually based on the direction or positional relationship shown in the drawing, just for the convenience of describing the utility model and simplifying the description, under the condition without making the opposite statement, these direction words do not indicate and imply that the device or element indicated must have a particular orientation or be constructed and operated in a particular orientation, therefore it cannot be understood as the limitation of the protection scope of the utility model;Direction words '' inside, outside '' refer to the inside and outside relative to the contour of each component.

[0028] For the convenience of description, spatial relative terms such as '' above'', '' above'', '' upper surface'', '' upper '' and the like can be used here to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawing. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawing. For example, if the device in the drawing is inverted, the device described as '' above '' or '' above '' other devices or structures will be positioned '' below '' or '' below '' other devices or structures. Thus, the exemplary term '' above '' can include both '' above '' and '' below '' orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative description used here is interpreted accordingly.

[0029] In addition, it needs to be explained that the use of '' first'', '' second '' and the like to limit parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, therefore it cannot be understood as the limitation of the protection scope of the utility model.

[0030] As Figures 1 to 7 As shown in the figure, a helmet lock, including cam 1 and lock tongue 2, cam 1 is provided with push rod 11;Lock tongue 2 is set with lock tongue groove 21 matched with push rod 11, lock tongue 2 realizes unlocking and twice locking through the linear motion of push rod 11 and the elastic element 22 installed thereon, wherein, the elastic element 22 can be selected by spring.

[0031] In one embodiment, it also includes driving mechanism 4 and transmission mechanism 5, driving mechanism 4 can adopt motor, transmission mechanism 5 is gear transmission, its structure is consistent with the structure in CN221298877U, except that the switch lock protrusion at the bottom of the output gear is not used to trigger the limit switch to realize switch lock, other principles are the same, here will not be repeated, driving mechanism 4 drives cam 1 to rotate through transmission mechanism 5.

[0032] In one embodiment, the PCBA board 6, the cam magnet 7 and the lock tongue magnet 8 are further included, the PCBA board 6 is installed on the lock shell 3, the cam magnet 7 is installed on the cam 1, and the lock tongue magnet 8 is installed on the lock tongue 2, the PCBA board 6 is provided with two Hall elements 61 for sensing the cam magnet 7 and the lock tongue magnet 8 respectively, the cam magnet 7 is used for detecting the motor locking position (fully locked state), and the lock tongue magnet 8 is used for detecting the lock tongue 2 unlocking position (unlocked state) and the lock tongue automatic locking position (locking helmet state).

[0033] In one embodiment, the cam 1 is provided with two push rods 11 which are symmetrically arranged along the center, the lock tongue 2 includes the first lock tongue 2-1 and the second lock tongue 2-2 which are staggered and oppositely arranged, the first lock tongue 2-1 and the second lock tongue 2-2 are both provided with the lock tongue groove 21 in the shape of “Yan” character, specifically, the lock tongue groove 21 includes the first lock tongue groove 211, the second lock tongue groove 212 and the partition plate 213 between the first lock tongue groove 211 and the second lock tongue groove 212, and the two push rods 11 respectively extend into the two lock tongue grooves 21 to push the first lock tongue 2-1 and the second lock tongue 2-2 to synchronously make linear motion, so as to realize unlocking and twice locking.

[0034] In one embodiment, the lock tongue 2 is installed in the lock shell 3, specifically, the lock shell 3 includes the shell cavity 32, the front cover plate 33 and the rear cover plate 34, wherein the front side of the shell cavity 32 is formed with the cavity structure for accommodating the lock tongue 2, the rear side of the shell cavity 32 is formed with the cavity structure for accommodating the driving mechanism 4 and the transmission mechanism 5, the spring cavity 23 is formed on the lock tongue 2, the elastic element 22 is installed in the spring cavity 23 and abuts against the inner wall of the spring cavity 23 at one end, the spring cavity 23 is provided with the pressing block 31 at the side away from the movement direction of the lock tongue 2 and the pressing block 31 is integrally formed with the lock shell 3, when the lock tongue 2 is retracted (unlocked state), the pressing block 31 presses the elastic element 22, at this time, the elastic element 22 is in the contracted state; when the lock tongue 2 partially extends outward (locking helmet state), at this time, the elastic element 22 is away from the pressing block 31 and the elastic element 22 is partially stretched; when the lock tongue continues to extend outward (fully locked state), at this time, the elastic element 22 is further away from the pressing block 31 and the elastic element 22 is completely stretched.

[0035] Further, as shown in FIG. 6, when the lock tongue 2 is in the unlocked state, the cam 1 is rotated by a certain angle, the two push rods 11 tend to be horizontal and are located in the second lock tongue groove 212 of the first lock tongue 2-1 and the second lock tongue 2-2 close to one side of the partition plate 213, for example, when unlocking from the fully locked state, the motor drives the cam 1 to rotate, the two push rods 11 on the cam 1 push the first lock tongue 2-1 and the second lock tongue 2-2 to retract inward, at this time, the elastic element 22 is in the compressed state, and the corresponding Hall element 61 controls the motor to stop working according to the detected outer end position of the lock tongue magnet 8 on the lock tongue 2 (the end away from the cam 1), so that the helmet can be taken off. Figure 2 ​

[0036] Further, in the helmet locking state, as shown in Figure 3 the cam 1 is rotated by a set angle, and the two push rods 11 tend to be vertical and located in the second lock tongue groove 212 of the first lock tongue 2-1 and the second lock tongue 2-2, close to one side of the partition 213. For example, after the helmet is unlocked and taken out, the helmet is not sensed, and the cam 1 starts to rotate until the corresponding Hall element 61 detects the inner end position (close to one end of the cam 1) of the lock tongue magnet 8, and stops at this time. At this time, the lock tongue 2 is partially extended under the elastic force of the elastic member 22. When the user places the helmet on the helmet lock, the helmet is automatically locked under the action of the elastic member 22.

[0037] Further, in the fully locked state, the cam 1 is rotated by a set angle, and the two push rods 11 tend to be vertical and located in the first lock tongue groove 211 of the first lock tongue 2-1 and the second lock tongue 2-2, close to one side of the partition 213. For example, after the helmet is automatically locked, the helmet is sensed to be in place. At this time, the motor drives the cam 1 to start rotating until the corresponding Hall element 61 detects the position of the cam magnet 7 (as shown in the position), and stops at this time. The lock tongue 2 is further extended, and relocking is achieved. Figure 4

[0038] The above is the preferred embodiment of the present application. The person skilled in the art of the present application can also change and modify the above-mentioned embodiment. Therefore, the present application is not limited to the above-mentioned specific embodiments. Any obvious improvement, replacement or modification made by the person skilled in the art on the basis of the present application belongs to the protection scope of the present application.​

Claims

1. A helmet lock, characterized by: The utility model relates to a lock mechanism, including: Cam (1), be provided with push rod (11) on cam (1); Lock tongue (2), lock tongue (2) are set up lock tongue groove (21) with push rod (11) cooperation use, lock tongue (2) realize the lock opening and twice locking by push rod (11) and the elastic element (22) installed on it straight line motion.

2. The helmet lock of claim 1, wherein: Still include drive mechanism (4) and transmission mechanism (5), drive mechanism (4) drive cam (1) rotation through transmission mechanism (5).

3. The helmet lock of claim 1, wherein: Still include PCBA board (6), cam magnet (7) and lock tongue magnet (8), PCBA board (6) are provided with two respectively sensing cam magnet (7) and lock tongue magnet (8) hall element (61), cam magnet (7) are installed on cam (1), lock tongue magnet (8) are installed on lock tongue (2).

4. The helmet lock of claim 1, wherein: Cam (1) are provided with 2 push rod (11) along the center symmetry, lock tongue (2) include staggered and opposite first lock tongue (2-1) and second lock tongue (2-2), first lock tongue (2-1) and second lock tongue (2-2) are all set up " mountain ” type lock tongue groove (21), two push rod (11) respectively extend into two lock tongue grooves (21) to push first lock tongue (2-1) and second lock tongue (2-2) synchronous straight line motion.

5. The helmet lock of claim 1, wherein: Lock tongue (2) are installed in lock shell (3), lock tongue (2) are set up spring cavity (23), elastic element (22) are installed in spring cavity (23) and one end is against the inner wall of spring cavity (23), spring cavity (23) are provided with pressing block (31) on the side away from the movement direction of lock tongue (2) and the pressing block (31) is integrally formed with lock shell (3).

6. The helmet lock of claim 4, wherein: Lock tongue groove (21) include first lock tongue groove (211), second lock tongue groove (212) and baffle (213), when unlocking, cam (1) rotate set angle, two push rod (11) tend to horizontal and be located in the second lock tongue groove (212) of first lock tongue (2-1) and second lock tongue (2-2) near the side of baffle (213).

7. The helmet lock of claim 4, wherein: When locking, cam (1) rotate set angle, two push rod (11) tend to vertical and be located in the second lock tongue groove (212) of first lock tongue (2-1) and second lock tongue (2-2) near the side of baffle (213).

8. The helmet lock of claim 4, wherein: When fully locking, cam (1) rotate set angle, two push rod (11) tend to vertical and be located in the first lock tongue groove (211) of first lock tongue (2-1) and second lock tongue (2-2) near the side of baffle (213).

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