CN218898530U

CN218898530U - Headband adjusting lock catch of helmet

Info

Publication number: CN218898530U
Application number: CN202223066964.5U
Authority: CN
Inventors: 曾泽辉
Original assignee: Dongguan Baomin Security Co ltd
Current assignee: Dongguan Baomin Security Co ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-04-25
Anticipated expiration: 2032-11-18

Abstract

The utility model relates to the technical field of helmet accessories, in particular to a headband adjusting lock catch of a helmet, which comprises a shell, wherein a bottom plate is fixedly arranged at the bottom of the shell, an accommodating groove is formed between the bottom plate and the shell, two headbands are stacked in the accommodating groove, driving parts for driving the two headbands to extend and retract are arranged in the shell, the driving parts are rotatably arranged in the shell, braking parts for driving the driving parts to rotate and lock are arranged on the outer side of the shell, the braking parts are rotatably arranged on the outer side of the shell and are slidably connected with the driving parts, and the driving parts are arranged in the outer side of the shell, and the braking parts for driving the driving parts to rotate and stop are arranged on the outer side of the shell. When the braking part rotates, the two head belts in the accommodating groove extend and retract simultaneously, and when the braking part is locked, the head belts are prevented from relatively moving in the accommodating groove.

Description

Headband adjusting lock catch of helmet

Technical Field

The utility model relates to the technical field of helmet accessories, in particular to a headband adjusting lock catch of a helmet.

Background

The helmet can protect the head of a user, can be used for riders of bicycles and electric vehicles, and can be seen everywhere on construction sites. The latch on the strap of the traditional helmet head lock structure is single in connection form with the strap, and the latch is directly and fixedly connected with the strap, so that the helmet type of head lock adaptation is single, and meanwhile, the parts of the head lock structure are trivial and complex, the assembly is tedious and the die cost is high.

The Chinese patent with the application number of CN202221451319.2 discloses a head lock assembly of a helmet, which comprises a binding belt, wherein one end of the binding belt is provided with a latch structure, the latch structure is connected with the binding belt through a connecting part, and the shape of the connecting part is S-shaped. According to the head lock assembly of the helmet, the latch structure of the strap is connected with the strap through the S-shaped structure, the connecting part is made of elastic materials, the helmet has certain elasticity, proper stretching and shrinking can be performed, the connecting part is arranged in the S shape, compared with the linear type connection, the helmet has larger elasticity and stretching length, and compared with the traditional strap, the helmet can be more flexible and can be adapted to more types of helmets. By adopting the proposal, the belt is not locked, so that the belt is easy to move relatively in the wearing process,

disclosure of Invention

In order to solve the problems, the utility model provides a headband adjusting lock catch of a helmet, wherein a driving part is arranged outside a shell, and a braking part for driving the driving part to rotate and stop is arranged outside the shell. When the braking part rotates, the two head belts in the accommodating groove extend and retract simultaneously, and when the braking part is locked, the head belts are prevented from relatively moving in the accommodating groove.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a helmet's bandeau regulation hasp, includes the casing, the bottom fixed mounting of casing has the bottom plate, the bottom plate with be equipped with the holding tank between the casing, pile up in the holding tank and be provided with two bandeau, be equipped with two of drive the drive part that the bandeau stretches out and withdraws in the casing, drive part rotates and installs in the casing, the casing outside is equipped with the brake part that drives drive part rotation and locking, brake part rotate and install the casing outside and with drive part sliding connection.

As a preferable mode of the utility model, the braking component comprises a limit post integrally formed with the shell, a rotatable handle is arranged on the limit post, a cavity is arranged in the handle, a connecting post integrally formed with the handle is arranged in the center of the cavity, and a connecting hole is arranged in the connecting post; the driving part is in sliding connection with the connecting hole; the limiting column is internally provided with a limiting hole matched with the connecting column, a plurality of tooth grooves are uniformly distributed at the top of the limiting hole, and sawteeth matched with the tooth grooves are integrally formed on the connecting column.

As the preferable mode of the utility model, a plurality of locking columns extending towards the direction of the shell are arranged in the cavity, and the locking columns are circularly and uniformly distributed on the outer side of the connecting column and coaxially arranged with the connecting column; the limiting column is positioned between the locking column and the connecting column, a rotating groove and a limiting groove are formed in the outer circumferential surface of the limiting column, and the limiting groove is positioned right below the rotating groove and is coaxially arranged; the limiting groove is adjacent to the shell; the limiting groove and the rotating groove are in arc transition connection; the end part of the locking column is provided with a locking part extending towards the direction of the connecting column, and the locking part is matched with the limiting groove and the rotating groove.

Preferably, the top of the rotating groove is horizontally provided with a limiting surface.

As a preferred aspect of the present utility model, the driving part includes a rotation shaft rotatably mounted on the housing, one end of the rotation shaft is integrally formed with a driving gear, the driving gear is located in the receiving groove and is engaged with the headband, the driving gear is rotatably mounted with a support shaft, and the support shaft is fixedly mounted on the base plate; the other end of the rotating shaft is integrally formed with a connecting shaft which is matched with the connecting hole; the connecting shaft is positioned on the outer side of the shell.

As a preferable mode of the utility model, the head bands are a left head band and a right head band, the end parts of the left head band and the right head band are stacked in the accommodating groove and are in meshing connection with the driving gear teeth, the end parts of the left head band and the right head band are respectively provided with an adjusting hole, one side of each adjusting hole is provided with a rack matched with the driving gear, and the racks on the left head band and the racks on the right head band are oppositely arranged on two sides of the driving gear and are in meshing connection with the driving gear teeth.

Preferably, the cross section of the connecting hole is a polygonal hole or a fan-shaped hole.

The utility model has the beneficial effects that: when the braking part slides to a set position away from the shell, the rotation of the braking part drives the driving part to rotate in the shell by rotating the braking part, so that the two head bands in the accommodating groove are driven to extend and retract simultaneously. When the braking member slides toward the housing to a set position, the braking member restrains the driving member from rotating in the housing, thereby fixing the two heads in the accommodation groove. Preventing the headband from moving relatively within the receiving slot.

Drawings

Fig. 1 is an exploded view of the present utility model.

Fig. 2 is an exploded cross-sectional view of the housing of the present utility model.

Reference numerals illustrate: 1. the device comprises a shell, 2, a bottom plate, 3, a head band, 31, a left head band, 32, a right head band, 33, a regulating hole, 34, a rack, 4, a braking component, 41, a limiting column, 42, a handle, 43, a cavity, 44, a connecting column, 45, a connecting hole, 46, a limiting hole, 47, a tooth socket, 48, a sawtooth, 49, a locking column, 410, a rotating groove, 411, a limiting groove, 412, a limiting surface, 413, a locking part, 5, a driving component, 51, a rotating shaft, 52, a driving gear, 53, a supporting shaft, 54, a connecting shaft and 6, a containing groove.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

Referring to fig. 1-2, the utility model relates to a helmet adjusting lock catch in a helmet, which comprises a shell 1, wherein a bottom plate 2 is fixedly arranged at the bottom of the shell 1 through screws, a containing groove 6 is arranged between the bottom plate 2 and the shell 1, two head bands 3 are stacked in the containing groove 6, a driving part 5 for driving the two head bands 3 to extend and retract is arranged in the shell 1, the driving part 5 is rotatably arranged in the shell 1, a braking part 4 for driving the driving part 5 to rotate and stop is arranged at the outer side of the shell 1, and the braking part 4 is rotatably arranged at the outer side of the shell 1 and is in sliding connection with the driving part 5. When the braking part 4 slides away from the housing 1 to a set position, the rotation of the braking part 4 drives the driving part 5 to rotate in the housing 1 by rotating the braking part 4, thereby driving the two headband 3 in the accommodating groove 6 to extend and retract simultaneously. When the braking member 4 slides toward the housing 1 to the set position, the braking member 4 restrains the driving member 5 from rotating in the housing 1, thereby fixing the two heads in the accommodating groove 6. The headband 3 is prevented from moving relatively in the receiving groove 6.

Referring to fig. 2, the brake member 4 includes a limit post 41 integrally formed with the housing 1, a rotatable handle 42 is provided on the limit post 41, a cavity 43 is provided in the handle 42, a connecting post 44 integrally formed with the handle 42 is provided in the center of the cavity 43, and a connecting hole 45 is provided in the connecting post 44. The driving part 5 is slidably coupled with the coupling hole 45. The cross section of the connecting hole 45 is a polygonal hole or a fan-shaped hole, the connecting hole 45 is a regular quadrilateral hole, a limiting hole 46 matched with the connecting column 44 is arranged in the limiting column 41, a plurality of tooth sockets 47 are uniformly distributed on the top of the limiting hole 46, and sawteeth 48 matched with the tooth sockets 47 are integrally formed on the connecting column 44. When the handle 42 is moved along the driving member 5 in a direction away from the housing 1, the serrations 48 on the connection post 44 slide out of the tooth slots 47 in the limiting aperture 46. The handle 42 is free to rotate and thereby the drive member 5. When the handle 42 moves along the driving member 5 toward the housing 1, the handle 42 cannot rotate and the driving member 5 stops rotating when the serrations 48 on the posts 44 slide into the tooth slots 47 in the limiting holes 46 to engage with each other.

In order to ensure that the handle 42 is prevented from being separated from the drive member 5 when the handle 42 is moved along the drive member 5 in a direction away from the housing 1. A plurality of locking posts 49 extending towards the direction of the shell 1 are arranged in the cavity 43, and the plurality of locking posts 49 are circularly and uniformly distributed on the outer side of the connecting post 44 and coaxially arranged with the connecting post 44. The limiting column 41 is positioned between the locking column 49 and the connecting column 44, the outer circumferential surface of the limiting column 41 is provided with a rotating groove 410 and a limiting groove 411, and the limiting groove 411 is positioned right below the rotating groove 410 and is coaxially arranged; the limiting slot 411 is adjacent to the outer surface of the housing 1. The limiting slot 411 and the rotating slot 410 are connected in a circular arc transition mode. A limiting surface 412 is horizontally provided at the top of the rotation groove 410. The locking post 49 has a locking portion 413 extending in the direction of the connecting post 44 at an end portion thereof, and the locking portion 413 is adapted to the limiting slot 411 and the rotating slot 410. Since a gap is provided between the adjacent two locking posts 49, the locking posts 49 have a certain elasticity. When the handle 42 moves in a direction away from the housing 1 along the driving member 5, the locking posts 49 in the housing 1 slide together, and the locking portions 413 on the locking posts 49 slide from the limiting slots 411 into the rotating slots 410 during sliding, and due to the design of the limiting surfaces 412, the handle 42 stops sliding when the locking portions 413 come into contact with the limiting surfaces 412. Thereby preventing the handle 42 from continuing to move and sliding off the drive member 5. When the handle 42 moves in the opposite direction, the top of the limit post 41 contacts the top of the cavity 43 to prevent the handle 42 from continuing to slide. Meanwhile, through the design of the limiting slot 411, the locking part 413 is positioned in the limiting slot 411, so that the locking column 49 is prevented from being in a stressed state all the time. Thereby increasing the service life of the locking post 49 and thus the handle 42.

The driving part 5 comprises a rotating shaft 51 rotatably mounted on the shell 1, one end of the rotating shaft 51 is integrally provided with a driving gear 52, the driving gear 52 is positioned in the accommodating groove 6 and is in meshed connection with the headband 3, the driving gear 52 is rotatably mounted with a supporting shaft 53, and the supporting shaft 53 is fixedly mounted on the bottom plate 2; the other end of the rotating shaft 51 is integrally formed with a connecting shaft 54 adapted to the connecting hole 45; the connection shaft 54 is located outside the housing 1. Since the cross section of the connection hole 45 is a polygonal hole or a fan-shaped hole and the connection hole 45 of the present utility model is a regular quadrangular hole, the connection shaft 54 is also a tetragonal shaft. The coupling hole 45 of the handle 42 can slide up and down on the coupling shaft 54 without relative rotation. The handle 42 thus rotates with the connecting shaft 54, which in turn rotates the drive gear 52. When the handle 42 is moved along the driving member 5 in a direction away from the housing 1, the serrations 48 on the connection post 44 slide out of the tooth slots 47 in the limiting aperture 46. The locking portion 413 of the locking post 49 slides from the limit slot 411 to the rotation slot 410 during sliding, and the handle 42 stops sliding when the locking portion 413 contacts the limit surface 412 due to the design of the limit surface 412. Rotation of the handle 42 rotates the drive gear 52. The handle 42 is free to rotate and thereby the drive member 5. When the handle 42 moves along the driving member 5 toward the housing 1, the teeth 48 on the connecting post 44 slide into the tooth grooves 47 in the limiting hole 46 to be engaged with each other, and the teeth 48 and the connecting post 44 are integrally formed, so that the tooth grooves 47 and the limiting post 41 are integrally formed, and the rotation of the handle 42 is limited after the teeth are engaged with each other, thereby limiting the rotation of the connecting shaft 54. When the handle 42 is used, the handle 42 is pressed down by external acting force, the handle 42 moves along the driving part 5 towards the direction of the shell 1, the saw teeth 48 on the connecting column 44 slide into the tooth grooves 47 in the limiting holes 46 to be connected in an engaged mode, the saw teeth 48 and the connecting column 44 are integrally formed, the tooth grooves 47 and the limiting columns 41 are integrally formed, the rotation of the handle 42 is limited after the saw teeth 48 and the connecting column 44 are engaged, the rotation of the handle 42 is limited after the saw teeth are engaged, and the handle 42 plays a role of locking. The handle 42 is pulled up by external force, the handle 42 moves along the driving part 5 in a direction away from the shell 1, the saw teeth 48 on the connecting column 44 slide out and separate from the tooth sockets 47 in the limiting holes 46, and the connecting column 44 is internally provided with the connecting holes 45 and the connecting shaft 54 to be matched so as to drive the driving part 5 to rotate. The handle 42 rotates clockwise to enable the two head bands 3 to move towards the shell to tighten the head band, and the handle 42 rotates anticlockwise to enable the two head bands 3 to move towards the outside of the shell to loosen the head band.

Referring to fig. 1, in order to ensure that two headband 3 extend and retract synchronously from the accommodating groove 6, the two headband 3 are a left headband 31 and a right headband 32 respectively, one ends of the left headband 31 and the right headband 32 are fixedly connected with the helmet, the other ends of the left headband 31 and the right headband 32 are stacked in the accommodating groove 6 and are in gear connection with the driving gear 52, the end parts of the left headband 31 and the right headband 32 are provided with adjusting holes 33, the adjusting holes 33 are positioned in the accommodating groove 6, one side of each adjusting hole 33 is provided with a rack 34 matched with the driving gear 52, and the racks 34 on the left headband 31 and the racks 34 on the right headband 32 are oppositely arranged on two sides of the driving gear 52 and are in gear engagement connection with the driving gear 52. The left headband 31 and the right headband 32 can be simultaneously extended and retracted when the driving gear 52 rotates.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

The above embodiments are merely illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the design of the present utility model.

Claims

1. The utility model provides a bandeau of helmet adjusts hasp, includes the casing, its characterized in that, the bottom fixed mounting of casing has the bottom plate, the bottom plate with be equipped with the holding tank between the casing, pile up in the holding tank and be provided with two bandeau, be equipped with two of drive the drive part that the bandeau stretches out and withdraws in the casing, drive part rotates and installs in the casing, the casing outside is equipped with the brake part that drives drive part and rotate and stop, brake part rotate and install the casing outside and with drive part sliding connection.

2. The headgear adjustment buckle of a helmet according to claim 1, wherein: the brake component comprises a limit column integrally formed with the shell, a rotatable handle is arranged on the limit column, a cavity is arranged in the handle, a connecting column integrally formed with the handle is arranged in the center of the cavity, and a connecting hole is formed in the connecting column; the driving part is in sliding connection with the connecting hole; the limiting column is internally provided with a limiting hole matched with the connecting column, a plurality of tooth grooves are uniformly distributed at the top of the limiting hole, and sawteeth matched with the tooth grooves are integrally formed on the connecting column.

3. The headgear adjustment buckle of the helmet according to claim 2, wherein: a plurality of locking columns extending towards the direction of the shell are arranged in the cavity, and the locking columns are circularly and uniformly distributed on the outer side of the connecting column and are coaxially arranged with the connecting column; the limiting column is positioned between the locking column and the connecting column, a rotating groove and a limiting groove are formed in the outer circumferential surface of the limiting column, and the limiting groove is positioned right below the rotating groove and is coaxially arranged; the limiting groove is adjacent to the shell; the limiting groove and the rotating groove are in arc transition connection; the end part of the locking column is provided with a locking part extending towards the direction of the connecting column, and the locking part is matched with the limiting groove and the rotating groove.

4. A headgear adjustment latch for a helmet according to claim 3, wherein: the top level of the rotating groove is provided with a limiting surface.

5. The headgear adjustment buckle of the helmet according to claim 2, wherein: the driving part comprises a rotating shaft rotatably mounted on the shell, one end of the rotating shaft is integrally provided with a driving gear, the driving gear is positioned in the accommodating groove and is in meshing connection with the head belt, the driving gear is rotatably mounted with a supporting shaft, and the supporting shaft is fixedly mounted on the bottom plate; the other end of the rotating shaft is integrally formed with a connecting shaft which is matched with the connecting hole; the connecting shaft is positioned on the outer side of the shell.

6. The headgear adjustment buckle of the helmet according to claim 5, wherein: the head band is left bandeau and right bandeau respectively, left bandeau with the tip stack of right bandeau is in the holding tank and with drive gear meshing is connected, left bandeau with the tip of right bandeau all is equipped with the regulation hole, one side of regulation hole be equipped with the rack of drive gear adaptation, rack on the left bandeau with the rack of right bandeau sets up relatively the both sides of drive gear and is connected with drive gear meshing.

7. The headgear adjustment buckle of the helmet according to claim 2, wherein: the cross section of the connecting hole is a polygonal hole or a fan-shaped hole.