WO2020134396A1

WO2020134396A1 - Head lock and head-mounted helmet body

Info

Publication number: WO2020134396A1
Application number: PCT/CN2019/111873
Authority: WO
Inventors: 刘若鹏; 栾琳; 黄河; 王建德; 胡如杰
Original assignee: 深圳光启超材料技术有限公司
Priority date: 2018-12-25
Filing date: 2019-10-18
Publication date: 2020-07-02
Also published as: CN209749920U

Abstract

A head lock and a head-mounted helmet body. The head lock comprises: a lower cover (1), an upper housing (2), a left adjustable strip (3), a right adjustable strip (4), a gear (5), and a rotary knob (6); the upper housing (2) is provided with a guide slot, and the upper housing (2) penetrates through the left adjustable strip (3) and right adjustable strip (4) by means of the guide slot; a ring of inner teeth (21) are provided on the upper housing (2), a single inner tooth (21) is of an asymmetrical shape, and one ring of inner teeth (21) is used as a stationary ratchet; a hook (51) is provided on the gear (5), a sharp point (511) is provided on the hook (51), and the sharp point (511) is used as a movable claw; the ratchet and the movable claw form a ratchet mechanism; one ring of outer teeth is provided on the gear (5), and a single outer tooth is of a symmetrical shape; racks are provided on the left adjustable strip (3), and racks are provided on the right adjustable strip (4); the gear (5) is engaged with the left adjustable strip (3) or the right adjustable strip (4) to form a gear-rack motion mechanism; the rotary knob (6) is used for opening the head lock. The head lock and the head-mounted helmet body is simple and convenient in use, compact and small in structure, light in weight, good in function effects, and high in comfort, and the user satisfaction in use is improved.

Description

Head lock and head-mounted helmet body

Technical field

The utility model relates to the technical field of helmets, in particular to a head lock and a head-mounted helmet body.

Background technique

With the rapid development of the smart wearable device industry, there are more and more types of smart helmets. As a wearable device, the smart helmet needs to ensure the reliability of wearing. In order to meet the wearers of different sizes of head circumference and meet the needs of quick disassembly and quick assembly, an adjustment mechanism with adjustable length, that is, adjustable elasticity, needs to be provided.

technical problem

Some existing helmet tightness automatic adjustment mechanisms need to be driven by a motor and driven by a turbine worm structure. The structure is complicated and the reliability is poor, so the weight is often too large.

Technical solution

The technical problem to be solved by the utility model is to provide a head lock and a head-mounted helmet body, which is simple and convenient, compact and compact in structure, light in weight, good in functional effect, high in comfort, and can increase the user's satisfaction in use.

In order to solve the above technical problems, on the one hand, an embodiment of the present invention provides a head lock, including: a lower cover, an upper case, a left adjustment belt, a right adjustment belt, a gear, a knob, and an upper case provided with a guide slot The casing penetrates the left adjustment belt and the right adjustment belt through the guide groove. The upper casing is provided with a ring of internal teeth. The single internal teeth have an asymmetric shape. The ring of internal teeth acts as a fixed ratchet wheel; the gear is provided with a hook , The hook is provided with a sharp corner, the sharp corner is used as a moving claw; the ratchet and the moving claw constitute a ratchet mechanism; the gear is provided with a ring of external teeth, a single external tooth is symmetrical, and the left adjustment belt is provided There is a rack, the right adjustment belt is provided with a rack, and the gear meshes with the left adjustment belt or the right adjustment belt, all of which constitute a gear rack movement mechanism; the button is used to open the head lock.

Preferably, four pillars are provided on the button.

Preferably, the button is turned counterclockwise, and the four posts on the button apply force to the hook of the gear, causing the hook to deform inward, the moving claw on the hook disengages from the ratchet teeth, and the gear rotates counterclockwise with the button; the gear drives the left adjustment belt and The right adjustment belt moves, the left adjustment belt will move to the right, and the right adjustment belt will move to the left.

Preferably, turn the button clockwise, the four posts on the button exert force on the gear, and the moving claw on the drive gear slides on the back of the tooth of the ratchet of the upper shell; the gear drives the left and right adjustment belts, the left adjustment The belt moves to the left and the right adjustment belt moves to the right.

Preferably, when the knob is turned counterclockwise, the gear loses its external force, and the hook of the gear is locked by the elastic force of the gear, causing the movable claw to contact the ratchet wheel, and the head lock locks itself.

Preferably, the clockwise rotation of the knob is stopped, the gear loses its external force, and the hook of the gear is under the elastic force of the gear, so that the movable claw comes into contact with the ratchet to be locked, and the head lock is self-locking.

Preferably, the head lock is installed in the head-mounted helmet body through a connection structure.

Preferably, the head lock is installed on the back side of the head-mounted helmet through a connecting structure.

Preferably, the connection structure is a screw.

On the other hand, an embodiment of the present invention provides a head-mounted helmet including the above-mentioned head lock.

Beneficial effect

Compared with the prior art, the above technical solution has the following advantages: simple and convenient, compact and compact structure, light weight, good functional effect, high comfort, and improved user satisfaction.

BRIEF DESCRIPTION

In order to more clearly explain the technical solutions in the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some implementations of the present invention For example, for those of ordinary skill in the art, without paying creative labor, other drawings can be obtained based on these drawings.

Fig. 1 is a schematic diagram of a head lock structure of the present invention.

Fig. 2 is a schematic diagram of the shortening and tightening of a head lock structure of the present invention.

Fig. 3 is an enlarged schematic view of a short-locking and tightening structure of a head lock structure of the present invention.

4 is a schematic diagram of length adjustment and loosening of a head lock structure of the present invention.

FIG. 5 is an enlarged schematic view of the length adjustment and loosening of a head lock structure of the present invention.

6 is a schematic view of the structure of a head-mounted helmet body of the present invention.

In the picture, 1-lower cover, 2-upper shell, 3-left adjustment belt, 4-right adjustment belt, 5-gear, 6-knob, 21-internal tooth, 51-hook, 511-pointed corner.

Embodiments of the invention

The technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of them. example. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

Example one

Fig. 1 is a schematic diagram of a head lock structure of the present invention. As shown in FIG. 1, a head lock includes: a lower cover 1, an upper case 2, a left adjusting belt 3, a right adjusting belt 4, a gear 5, a knob 6, an upper case 2 is provided with a guide slot, and the upper case 2 is guided by The slot penetrates into the left adjustment belt 3 and the right adjustment belt 4, and the upper shell 2 is provided with a ring of internal teeth 21, a single internal tooth 21 has an asymmetrical shape, and the ring of internal teeth 21 serves as a stationary ratchet; gear 5 A hook 51 is provided on the top, and a sharp angle 511 is provided on the hook 51, and the sharp angle 511 is used as a moving claw; the ratchet and the moving claw form a ratchet mechanism; the gear 5 is provided with a ring of external teeth, a single external tooth It has a symmetrical shape, the left adjustment belt 3 is provided with a rack, the right adjustment belt 4 is provided with a rack, the gear 5 meshes with the left adjustment belt 3 or the right adjustment belt 4, all constitute a gear rack movement mechanism; the button 6 Used to open the head lock. There are 4 posts on the button 6. The left adjustment belt 3 and the right adjustment belt 4 can only move in the length direction. The gear parts are made of plastic, the hook 51 has a certain elasticity, and the movable claw and the ratchet can maintain contact. The characteristic of this meshing motion is: in the absence of external force, the movable claw can only rotate in one direction, not reverse.

Fig. 2 is a schematic diagram of the shortening and tightening of a head lock structure of the present invention. Fig. 3 is an enlarged schematic view of a short-locking and tightening structure of a head lock structure of the present invention. As shown in Figure 2 and Figure 3, after the head lock assembly is assembled, it can be loosened and tightened. Turn the knob 6 counterclockwise by hand, the four posts on the knob 6 will apply force to the hook 51 part of the gear 5, so that the hook 51 part deforms inward, and then the movable claw on the hook 51 part disengages from the ratchet teeth, so the gear 5 It can turn counterclockwise with knob 6. At the same time, the gear 5 drives the left adjusting belt 3 and the right adjusting belt 4 to move, the left adjusting belt 3 will move to the right, and the right adjusting belt 4 will move to the left. Therefore, the total length of the head lock assembly is shortened, and the helmet wearing is tightened. When tightened and the wearing reliability is adjusted properly, stop turning the knob 6, the gear 5 loses the external force, and its hook 51 part is under its own elastic force, so that the movable claw is stuck with the ratchet and cannot be reversed. The head lock is self-locking.

4 is a schematic diagram of length adjustment and loosening of a head lock structure of the present invention. FIG. 5 is an enlarged schematic view of the length adjustment and loosening of a head lock structure of the present invention. As shown in Figures 4 and 5, turn the knob 6 clockwise by hand, the four posts on the knob 6 will exert force on the gear 5, and the moving claw on the driving gear 5 slides on the back of the ratchet of the upper shell 2 . At the same time, the gear 5 drives the left adjusting belt 3 and the right adjusting belt 4 to move, the left adjusting belt 3 will move to the left, and the right adjusting belt 4 will move to the right. Thus, the total length of the head lock assembly is adjusted to be longer, and the helmet wearing is adjusted to be loose. When it is loosened, the rotation of the knob 6 is stopped, the gear 5 has no external force, and the hook 51 part of the hook 51 is locked by the contact of the ratchet wheel under the elastic force of its own, and cannot be reversed, that is, self-locking is achieved.

Through the above two processes of rotating the button 6 counterclockwise, the final effect is: the head lock is locked at any time. By rotating the knob, the length of the head lock is adjustable and the elasticity is adjustable, which is convenient for the helmet to be quickly installed and removed.

Example 2

6 is a schematic view of the structure of a head-mounted helmet body of the present invention. As shown in FIG. 6, the head-mounted helmet body includes a head lock 7 and a helmet 8. The head lock 7 is connected to the rear side of the helmet 8 by screws 9. The head lock 7 adopts the setting of the first embodiment, which will not be repeated here.

Industrial applicability

As can be seen from the above description, the use of the head lock and head-mounted helmet body according to the present invention is simple, convenient, compact and compact, light in weight, good in function and high in comfort, and improves user satisfaction.

The embodiments of the present utility model have been described in detail above, and specific examples have been used in this article to explain the principles and implementation of the present utility model. The descriptions of the above embodiments are only used to help understand the methods and core ideas of the present utility model; At the same time, for those of ordinary skill in the art, according to the idea of the utility model, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as a limitation of the utility model.

Claims

A head lock, characterized by comprising: a lower cover (1), an upper casing (2), a left adjustment belt (3), a right adjustment belt (4), a gear (5), a knob (6), and an upper casing ( 2) There is a guide groove, the upper shell (2) penetrates the left adjustment belt (3) and the right adjustment belt (4) through the guide groove, the upper shell (2) is provided with a ring of internal teeth (21), a single inner The tooth (21) has an asymmetrical shape, and the inner ring of teeth (21) serves as a fixed ratchet wheel; a hook (51) is provided on the gear (5), and a sharp angle (511) is provided on the hook (51) ), the pointed corner (511) serves as a moving claw; the ratchet and the moving claw form a ratchet mechanism; the gear (5) is provided with a ring of external teeth, the single external teeth are symmetrical in shape, and the left adjustment belt (3) is provided There is a rack, the right adjustment belt (4) is provided with a rack, the gear (5) meshes with the left adjustment belt (3) or the right adjustment belt (4), all constitute a rack and pinion movement mechanism; the button (6) Used to open the head lock.
The head lock according to claim 1, characterized in that the button (6) is provided with four posts.
The head lock according to claim 2, characterized in that, when the button (6) is turned counterclockwise, the four posts on the button (6) apply force to the hook (51) of the gear (5), so that the hook (51) faces Internal deformation, the moving claw on the hook (51) disengages the ratchet teeth, the gear (5) rotates counterclockwise with the button (6); the gear (5) drives the left adjustment belt (3) and the right adjustment belt (4), left The adjustment belt (3) will move to the right, and the right adjustment belt (4) will move to the left.
The head lock according to claim 2, characterized in that, when the button (6) is turned clockwise, the four posts on the button (6) exert force on the gear (5), and the movable claw on the gear (5) is driven The upper shell (2) slides over the tooth back of the ratchet wheel; the gear (5) drives the left adjusting belt (3) and the right adjusting belt (4), the left adjusting belt (3) moves to the left, and the right adjusting belt (4) moves Move right.
The head lock according to claim 3, characterized in that, when the knob (6) is turned counterclockwise, the gear (5) loses the external force, and the hook (51) of the gear (5) is under the elastic force of itself, so that the movable claw and When the ratchet is touched and stuck, the head lock is self-locking.
The head lock according to claim 4, characterized in that, when the knob (6) is turned clockwise, the gear (5) loses its external force, and the hook (51) of the gear (5) is under the elastic force of itself, so that the movable claw and When the ratchet is touched and stuck, the head lock is self-locking.
The head lock according to claim 1, wherein the head lock is installed in a head-mounted helmet body through a connection structure.
The head lock according to claim 6, wherein the head lock is installed on the rear side of the head-mounted helmet through a connecting structure.
The head lock according to claim 6, wherein the connection structure is a screw.
A head-mounted helmet body, characterized by comprising a head lock (7) according to any one of claims 1 to 9.