CN212971864U

CN212971864U - Helmet lens fixing mechanism

Info

Publication number: CN212971864U
Application number: CN202021728594.5U
Authority: CN
Inventors: 丁建伯
Original assignee: Beijing Shenzhou Rodia Industry & Trade Co ltd
Current assignee: Beijing Shenzhou Rodia Industry & Trade Co ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-04-16
Anticipated expiration: 2030-08-18

Abstract

The utility model relates to a helmet lens fixing mechanism, including upper lock catch and lower lock catch, upper lock catch includes the lens mount pad, with the articulated thread slipping of lens mount pad, the lens mount pad includes pedestal, pivot, the inboard of pedestal is provided with L shape first fixture block, be provided with the draw-in groove between first fixture block and the pedestal, the inboard of pedestal still is provided with the lug with pivot looks adaptation, be provided with two torsional springs between two lugs, the thread slipping includes the knot body, one side of knot body is provided with L shape turning handle, the below of knot body is provided with first hook portion; the lower lock catch comprises a helmet body connecting plate, and a second hook part matched with the first hook part is arranged at the upper end of the helmet body connecting plate. When the lower ends of the lenses and the helmet body are closed, the helmet lens fixing mechanisms can be mutually occluded and locked, and the occlusion effect is good, so that the sealing performance between the lower ends of the lenses and the helmet body is guaranteed; the helmet lens fixing mechanism is simple in structure, small in occupied space and convenient to install and use.

Description

Helmet lens fixing mechanism

Technical Field

The utility model relates to a helmet lens fixed establishment belongs to helmet production technical field.

Background

At present, most of the helmets popular in the market are designed into a single lens, namely, the front part of the helmet is provided with a wind shield capable of turning up and down around a hinged shaft of the helmet, and the wind shield is used for preventing sand wind and the like from hurting eyes and heads of users.

The disclosure CN201319897Y discloses a dual-lens helmet, which comprises a helmet body, a wind-blocking mirror, and an inner lens hinged in the helmet cavity of the helmet body, and the inner lens is connected with an inner lens rotating and swinging mechanism. An inner lens 3 is hinged in the helmet cavity of the helmet body 1, and the inner lens is connected with an inner lens rotating and swinging mechanism 4. Specifically, the inner lens swing mechanism 4 includes an installation base 41 disposed on the helmet body 1, and the installation base 41 is provided with a pushing handle 42 connected to an end of one side of the inner lens 3, a sliding slot 43 for installing the pushing handle 42, an elastic button 44 disposed at an end of the sliding slot 43 for locking the pushing handle 42, and a tension spring 45 having one end connected to the installation base 41 and the other end connected to an end of one side of the inner lens 3. The elastic button 44 is provided with a reverse hook for locking the pushing handle 42.

The inner lens rotating and swinging mechanism 4 of the helmet is complex in structure, a tension spring 45 with a large volume is used as a reset driving force, and the whole inner lens rotating and swinging mechanism 4 occupies a large space; and the sealing degree between the helmet body and the inner lens depends on the tension spring 45, and once a large external force is met, the sealing performance between the inner lens and the helmet body is deteriorated.

SUMMERY OF THE UTILITY MODEL

The utility model provides a helmet lens fixed establishment to the not enough of prior art existence, concrete technical scheme as follows:

a helmet lens fixing mechanism comprises an upper lock catch and a lower lock catch, wherein the upper lock catch comprises a lens mounting seat and a slide fastener hinged with the lens mounting seat, the lens mounting seat comprises a seat body and a rotating shaft, an L-shaped first fixture block is arranged on the inner side of the seat body, the lower end of the first fixture block is fixedly connected with the seat body, a clamping groove is formed between the first fixture block and the seat body, a lug matched with the rotating shaft is further arranged on the inner side of the seat body, two lugs are arranged, the lug is fixedly connected with the rotating shaft, a double torsion spring is arranged between the two lugs, the middle part of the double torsion spring is sleeved outside the rotating shaft, and the head end of the double torsion spring is connected with the seat body; the slide fastener comprises a fastener body, an L-shaped rotating handle is arranged on one side of the fastener body, the lower end of the rotating handle is fixedly connected with the fastener body, the upper end of the rotating handle is rotatably connected with the rotating shaft, and a first hook part is arranged below the fastener body; the lower lock catch comprises a helmet body connecting plate, a second hook portion matched with the first hook portion is arranged at the upper end of the helmet body connecting plate, and the second hook portion and the helmet body connecting plate are arranged in an angular shape.

As an improvement of the technical scheme, a convex plate is further arranged below the buckle body and is arranged in an arc shape, and the convex plate is arranged on the outer side of the first hook portion.

As an improvement of the technical scheme, the upper end of the rotating handle is provided with a round hole matched with the rotating shaft.

As an improvement of the technical scheme, the head ends of the double torsion springs are of a U-shaped structure, the inner side of the seat body is provided with a second clamping block matched with the head ends of the double torsion springs, and the tail ends of the double torsion springs abut against the inner side of the buckling body.

The utility model has the advantages that:

by installing the helmet lens fixing mechanism between the lower end of the lens and the helmet body, when the lower end of the lens is closed with the helmet body, the helmet lens fixing mechanism can be mutually occluded and locked, the occlusion effect is good, and therefore the sealing performance between the lower end of the lens and the helmet body is guaranteed; the helmet lens fixing mechanism is simple in structure, small in occupied space and convenient to install and use.

Drawings

Fig. 1 is a schematic view illustrating a connection between a lens fixing mechanism and a helmet body of the helmet of the present invention;

fig. 2 is a schematic view of the connection between the lens fixing mechanism and the lens of the helmet of the present invention;

fig. 3 is a schematic structural view of the lens of the present invention;

fig. 4 is a schematic structural view of the helmet lens fixing mechanism of the present invention;

fig. 5 is a schematic structural view of the slide fastener of the present invention;

fig. 6 is a schematic structural view of the lens mount of the present invention;

fig. 7 is a schematic connection diagram of the seat body, the rotating shaft, the protruding block and the double torsion springs of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The structure of the existing helmet is shown in fig. 1, and comprises a helmet body 10 and a lens 11, wherein the lens 11 is hinged with the helmet body 10. The lens 11, the helmet body 10 and the hinge structure between the lens 11 and the helmet body 10 are all in the prior art, and are not described herein again.

A helmet lens fixing mechanism 20 is mounted between the lower end of the lens 11 and the helmet body 10, as shown in fig. 1 and 2.

As shown in fig. 4-7, the helmet lens fixing mechanism 20 includes an upper lock catch 21 and a lower lock catch 22, the upper lock catch 21 includes a lens mounting seat 212 and a slide catch 211 hinged to the lens mounting seat 212, the lens mounting seat 212 includes a seat body 2121 and a rotating shaft 2122, an L-shaped first fixture block 2124 is disposed on an inner side of the seat body 2121, a lower end of the first fixture block 2124 is fixedly connected to the seat body 2121, a clamping groove 2126 is disposed between the first fixture block 2124 and the seat body 2121, a protruding block 2123 adapted to the rotating shaft 2122 is further disposed on an inner side of the seat body 2121, two protruding blocks 2123 are disposed, the protruding block 2123 is fixedly connected to the rotating shaft 2122, a double torsion spring 2125 is disposed between the two protruding blocks 2123, a middle portion of the double torsion spring 2125 is sleeved on an outer portion of the rotating shaft 2122, and a head end of the double torsion spring; the slide buckle 211 comprises a buckle body 2111, an L-shaped rotating handle 2113 is arranged on one side of the buckle body 2111, the rotating handle 2113 and the buckle body 2111 are oppositely arranged, the lower end of the rotating handle 2113 is fixedly connected with the buckle body 2111, the upper end of the rotating handle 2113 is rotatably connected with a rotating shaft 2122, a first hook portion 2112 is arranged below the buckle body 2111, and the upper end of the first hook portion 2112 is connected with the buckle body 2111 into a whole; the lower lock catch 22 comprises a helmet body connecting plate 221, a second hook portion 222 matched with the first hook portion 2112 is arranged at the upper end of the helmet body connecting plate 221, and the second hook portion 222 and the helmet body connecting plate 221 are arranged in an angle shape.

The structure of the existing lens 11 is optimally designed, as shown in fig. 3, a groove 111 matched with the clamping groove 2126 is arranged at the lower end of the lens 11, and sliding grooves 112 matched with the first clamping blocks 2124 are respectively arranged at two sides of the groove 111.

The lens mount 212 and the lens 11 are connected as follows:

the locking slot 2126 is abutted with the groove 111, the first locking block 2124 is inserted along the sliding slot 112 in the abutting process, and finally the lens mounting seat 212 is riveted with the lens 11 by using a rivet. The clamping groove 2126, the groove 111, the first clamping block 2124 and the sliding groove 112 are arranged, so that the mounting is convenient, and the mounting structure is more stable. The lens mount 212 is able to rotate as the lens 11 rotates. The slider 211 is capable of relative rotation with the lens mount 212 along the rotational axis 2122.

The lower lock 22 and the helmet body 10 are connected in the following manner:

the structure of the helmet body connecting plate 221 is matched with the structure of the helmet body 10, and then the helmet body connecting plate 221 and the helmet body 10 are riveted by using a rivet.

The method for fixing the lens 11 by the helmet lens fixing mechanism 20 is as follows:

when the lens 11 is opened upwards, the lower end of the lens 11 carries the upper lock catch 21 to move upwards, and the lower lock catch 22 is fixed at the helmet body 10.

When the lower end of the lens 11 is buckled with the helmet body 10, the first hook 2112 and the second hook 222 are in sliding contact with each other; in the process that the first hook portion 2112 and the second hook portion 222 slide against each other, because the second hook portion 222 is fixed and the slide fastener 211 is hinged with the lens mounting seat 212, the first hook portion 2112 is spread; because the double torsion springs 2125 are provided, the head and the tail ends of the double torsion springs 2125 are arranged in an angular shape, and the double torsion springs 2125 are located between the slide fastener 211 and the lens mounting seat 212, in the process that the first hook portion 2112 is spread, the head and the tail ends of the double torsion springs 2125 are both extruded to generate torsion; therefore, once the first and

second hook portions

2112 and 222 are hooked to each other, the first and

second hook portions

2112 and 222 are allowed to abut against and bite into each other by the double torsion spring 2125. The first hook portion 2112 is engaged with the second hook portion 222, the engaging structure is not easy to loosen, and the first hook portion 2112 can be separated from the second hook portion 222 only by turning the slide fastener 211 outwards by hand; the process of turning the slider 211 outwards needs to overcome the torsion of the double torsion spring 2125; therefore, even if the slider 211 encounters a large external force, the slider 211 needs to be turned over at a certain angle, and the lens 11 can be turned upwards; therefore, the upper lock catch 21 and the lower lock catch 22 are not easily blown open by wind or loosened due to vibration, and the locking effect is good. The lens 11 and the helmet body 10 are locked through the upper lock catch 21 and the lower lock catch 22, the lens 11 is not easy to be passively opened, the lens 11 can be opened only by actively turning over the upper lock catch 21, and the sealing effect between the lens 11 and the helmet body 10 is good. The parts of the first hook 2112 and the second hook 222 which are in contact with each other are designed to be arc-shaped structures, so that the parts can slide conveniently.

And the sealing degree between the helmet body and the lens depends on the tension spring 45, and once a large external force is met, the sealing performance between the lens and the helmet body is deteriorated.

As shown in fig. 5, a protruding plate 2115 is further disposed below the buckle 2111, the protruding plate 2115 is disposed in an arc shape, and the protruding plate 2115 is disposed outside the first hook portion 2112. The arrangement of the convex plate 2115 is for conveniently turning the slide fastener 211 upwards, and the arrangement of the convex plate 2115 makes the turning operation more convenient.

Further, the upper end of the stem 2113 is rotatably connected to the shaft 2122 in the following manner: the upper end of the rotating handle 2113 is provided with a round hole 2114 matched with the rotating shaft 2122. The rotational connection is achieved by inserting the end of the shaft 2122 into the circular hole 2114, the cross-section of the shaft 2122 being circular.

Further, the connection mode between the seat body 2121 and the head end of the double torsion spring 2125 is as follows: the head end of the double torsion spring 2125 is U-shaped, the inner side of the seat body 2121 is provided with a second clamping block 2127 matched with the head end of the double torsion spring 2125, and the tail end of the double torsion spring 2125 abuts against the inner side of the buckle 2111. The second clamping block 2127 can clamp the head end of the double torsion spring 2125 in the U-shaped structure, so that the connection structure is convenient to mount and dismount.

In the above embodiment, the helmet lens fixing mechanism 20 is installed between the lower end of the lens 11 and the helmet body 10, and when the lower end of the lens 11 is closed with the helmet body 10, the helmet lens fixing mechanism 20 can be engaged and locked with each other, so that the engagement effect is good, and the sealing property between the lower end of the lens 11 and the helmet body 10 is ensured; the helmet lens fixing mechanism 20 has a simple structure, occupies a small space, and is convenient to install and use.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A helmet lens fixed establishment which characterized in that: comprises an upper lock catch (21) and a lower lock catch (22), wherein the upper lock catch (21) comprises a lens mounting seat (212) and a slide fastener (211) hinged with the lens mounting seat (212), the lens mounting seat (212) comprises a seat body (2121) and a rotating shaft (2122), an L-shaped first clamping block (2124) is arranged on the inner side of the seat body (2121), the lower end of the first clamping block (2124) is fixedly connected with the seat body (2121), a clamping groove (2126) is arranged between the first clamping block (2124) and the seat body (2121), the inner side of the seat body (2121) is also provided with a convex block (2123) matched with the rotating shaft (2122), two convex blocks (2123) are arranged, the convex block (2123) is fixedly connected with the rotating shaft (2122), a double torsion spring (2125) is arranged between the two convex blocks (2123), the middle part of the double torsion spring (2125) is sleeved outside the rotating shaft (2122), and the head end of the double torsion spring (2125) is connected with the seat body (2121); the slide fastener (211) comprises a fastener body (2111), an L-shaped rotating handle (2113) is arranged on one side of the fastener body (2111), the lower end of the rotating handle (2113) is fixedly connected with the fastener body (2111), the upper end of the rotating handle (2113) is rotatably connected with a rotating shaft (2122), and a first hook part (2112) is arranged below the fastener body (2111); the lower lock catch (22) comprises a helmet body connecting plate (221), a second hook portion (222) matched with the first hook portion (2112) is arranged at the upper end of the helmet body connecting plate (221), and the second hook portion (222) and the helmet body connecting plate (221) are arranged in an angular shape.

2. A helmet lens attachment mechanism according to claim 1, wherein: the buckle is characterized in that a convex plate (2115) is further arranged below the buckle body (2111), the convex plate (2115) is arranged in an arc shape, and the convex plate (2115) is arranged on the outer side of the first hook portion (2112).

3. A helmet lens attachment mechanism according to claim 1, wherein: the upper end of the rotating handle (2113) is provided with a round hole (2114) matched with the rotating shaft (2122).

4. A helmet lens attachment mechanism according to claim 1, wherein: the head end of the double torsion spring (2125) is of a U-shaped structure, a second clamping block (2127) matched with the head end of the double torsion spring (2125) is arranged on the inner side of the seat body (2121), and the tail end of the double torsion spring (2125) abuts against the inner side of the buckling body (2111).