CN210581188U

CN210581188U - Safety helmet

Info

Publication number: CN210581188U
Application number: CN201921656899.7U
Authority: CN
Inventors: 陈水标; 沈春雷; 陈奕诺
Original assignee: Zhejiang Junbang Electronic Technology Co Ltd
Current assignee: Zhejiang Junbang Electronic Technology Co Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-05-22
Anticipated expiration: 2029-09-30

Abstract

The utility model discloses a safety helmet relates to safe technical field, the inconvenient problem of tight regulation when aiming at solving the safety helmet and wearing, and its technical scheme main points are: including cap shell and lower cheek area, be equipped with the coiling mechanism in the cap shell, the coiling mechanism includes support and the axis of rotation that is used for the cheek area under the rolling, and the both ends of axis of rotation are equipped with and provide the torsional spring of axis of rotation direction restoring force, the support is worn out and is connected with the ratchet to the one end of axis of rotation, and the ratchet is equipped with the only latch fitting piece that matches with the ratchet outward. The utility model discloses a lower cheek area rolling is in the coiling mechanism, through axis of rotation and torsional spring, and the cheek area under the automatic winding plays better elastic adjustment when dragging the cheek area, through ratchet and dog cooperation, can play the limiting displacement to the axis of rotation, prevents that the cheek area is pulled out in the in-process that the safety helmet dressed from the coiling mechanism down, avoids the safety helmet to dress not tight.

Description

Safety helmet

Technical Field

The utility model relates to a safe technical field, more specifically say, it relates to a safety helmet.

Background

The safety helmet is a shallow round cap made of steel or similar raw materials and worn for protecting the top of the head, and is a protective article for preventing impact objects from hurting the head. Consists of a hat shell, a hat lining, a lower cheek band and a rear hoop. The cap shell is hemispherical, firm, smooth and elastic, and the impact and puncture kinetic energy of the hit object are mainly borne by the cap shell. A certain space is left between the helmet shell and the helmet liner, and the instantaneous impact force can be buffered and dispersed, so that the direct damage to the head is avoided or reduced.

The tightness degree of the existing safety helmet which is worn on the head of a user is adjusted through the tightness degree of the lower cheek strap, so that the worn safety helmet needs to take a long time for adjusting the lower cheek strap when being removed.

Aiming at the problems, the Chinese patent with the publication number of CN204048218U discloses a safety helmet, which has the technical key points that: on one hand, the first clamping piece is respectively engaged with the lacing and the second clamping piece, and when the second clamping piece rotates, the movement of the lacing relative to the strap can be realized, so that the wearing tightness of the safety helmet can be adjusted; on the other hand, the second clamping piece and the first clamping piece are separated by the aid of the matching of the knob and the elastic piece, so that the safety helmet can be quickly detached, and the purpose of one-key adjustment is achieved.

This scheme has solved and has worn and the inconvenient problem of tight regulation, simultaneously the utility model provides a new technical scheme solves above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art existence, the utility model aims to provide a safety helmet convenient to wear and elasticity control.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a safety helmet, includes the cap shell, be connected with the lower cheek area of fastener and with the cassette of fastener joint, be equipped with the coiling mechanism in the cap shell, the coiling mechanism is including fixing the support in the cap shell and rotating the axis of rotation of connecting between two supports and being used for the cheek area under the rolling, the both ends of axis of rotation are equipped with and provide the torsional spring that axis of rotation direction of rotation restores force, the support is worn out and the ratchet is connected with to the one end of axis of rotation, the ratchet is equipped with outward and is used for restricting ratchet pivoted and ends the latch fitting spare.

Through adopting above-mentioned technical scheme, will lower cheek area rolling in the coiling mechanism through the axis of rotation, when outwards pulling and pull down a roll cheek area, take place elastic deformation for the epaxial torsional spring of rotation, provide a restoring force and make unnecessary lower cheek area rolling recovery package in, play the effect of automatic adjustment lower cheek area elasticity, lock the ratchet through the lock piece for it is fixed to stretch out the outer lower cheek area length of coiling mechanism, through fastener and cassette joint, makes things convenient for the safety helmet to wear.

The utility model discloses further set up to: the locking piece comprises a stop block and a push rod used for pushing the stop block, a groove matched with the ratchet wheel is formed in one side of the stop block, and a spring is arranged between the groove and the ratchet wheel.

Through adopting above-mentioned technical scheme, set up the recess that matches with the ratchet on the dog, when the push rod promoted the dog and made the ratchet stretch into in the recess, can effectual restriction ratchet rotate to restriction axis of rotation rotates, makes the lower cheek area length that stretches out the coiling mechanism fixed, when loosening the push rod, pushes away the dog from the ratchet through the spring, makes the ratchet break away from the restriction of dog, makes the axis of rotation can rotate.

The utility model discloses further set up to: the ratchet wheel indexing mechanism is characterized in that one side, away from the ratchet wheel, of the stop block is provided with a plurality of indexing claws, the push rod is of a hollow structure, the inner wall of the push rod is provided with deep grooves and shallow grooves which are matched with the indexing claws, the deep grooves and the shallow grooves are arranged alternately, the indexing claws are connected in the deep grooves or the shallow grooves in a sliding mode, the push rod is connected with a slide rod in the sliding mode, and one end, close to the stop block, of the.

Through adopting above-mentioned technical scheme, make the slide bar be close to the sawtooth extrusion dog on the dog one end through promoting the slide bar and go up the indexing claw, make the indexing claw rotate under the effect of slide bar, make the indexing claw round trip movement between deep trouth and shallow slot, when the indexing claw inlays in the shallow slot, the dog moves to the ratchet direction under the effect of indexing claw, make the ratchet joint in the recess of dog, the rotation of restriction ratchet, thereby restriction axis of rotation rotates, make the length of cheek area fixed down, make things convenient for wearing of safety helmet.

The utility model discloses further set up to: the depth of the groove is larger than the thickness of the ratchet wheel.

Through adopting above-mentioned technical scheme, the degree of depth of recess is greater than the thickness of ratchet, when guaranteeing that the push rod promotes the dog, makes the ratchet imbed in the recess completely.

The utility model discloses further set up to: the support is provided with a blind groove matched with the torsion spring, through holes are formed in two ends of the rotating shaft, the torsion spring is sleeved on the rotating shaft, one end of the torsion spring penetrates through the through holes, and the other end of the torsion spring is embedded in the blind groove.

Through adopting above-mentioned technical scheme, the torsional spring cup joints on the axis of rotation, and in the blind groove of one end embedding support, the other end passed the through-hole on the axis of rotation, made the firm fixing of torsional spring on the axis of rotation, when the axis of rotation rotated, can produce better restoring force.

The utility model discloses further set up to: the cap shell is provided with a rear hoop with tightness adjusting capability.

Through adopting above-mentioned technical scheme, set up the back hoop that has the elasticity regulatory ability on the cap shell, the cooperation is lower the buccal band and is made the helmet wear when wearing more firm.

To sum up, the utility model discloses following beneficial effect has:

lower cheek area rolling is in the coiling mechanism, through axis of rotation and torsional spring, automatic rolling lower cheek area plays better elasticity regulation, through ratchet and dog cooperation, can play the limiting displacement to the axis of rotation, prevents that lower cheek area from being pulled out in the coiling mechanism at the in-process that the safety helmet dressed, avoids the safety helmet to dress not tightly, through the setting of spring, push rod and slide bar, controls the contact state of dog and ratchet to the realization is only locked and is moved the coiling mechanism.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the winding device of the present invention;

fig. 3 is a schematic view of the stop lock of the present invention, showing the positions of the stop and the groove.

In the figure: 1. a cap shell; 2. a lower buccal band; 3. a fastener; 4. a card holder; 5. a support; 6. a rotating shaft; 7. a torsion spring; 8. a blind groove; 9. a through hole; 10. a ratchet wheel; 11. a lock stopping member; 12. a stopper; 13. a push rod; 14. a groove; 15. a spring; 16. an indexing claw; 17. deep grooves; 18. shallow-groove; 19. a slide bar.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

Example (b): a safety helmet is shown in figures 1 to 3, and comprises a helmet shell 1, wherein two supports 5 are firstly adhered to the positions of side ears in the helmet shell 1 by people, through grooves penetrating through the supports 5 and blind grooves 8 communicated with the through grooves are formed in the supports 5, the inner diameters of the blind grooves 8 are larger than those of the through grooves, then the two torsional springs 7 are respectively sleeved at two ends of a rotating shaft 6 by people, one ends of the torsional springs 7 are embedded into through holes 9 of the rotating shaft 6, then two ends of the rotating shaft 6 penetrate through the through grooves of the supports 5, one ends, far away from the through holes 9, of the torsional springs 7 are embedded into the blind grooves 8, the torsional springs 7, the rotating shaft 6 and the supports 5 form a winding device for winding a lower cheek strap 2, then a ratchet wheel 10 is adhered to one end, penetrating through the supports 5 to the outside, of the rotating shaft 6, then one end, far away from the lower cheek strap 2, of a clamping piece 3 is, when the torsion spring 7 is in a natural state, the lower cheek strap 2 is wound on the rotating shaft 6, then a groove 14 matched with the ratchet 10 is formed on one side of the block 12, the depth of the groove 14 is larger than the thickness of the ratchet 10, then a plurality of indexing claws 16 are adhered to one side of the block 12 opposite to the groove 14 in an annular array mode, then the block 12 is connected in a hollow push rod 13 in a sliding mode, the indexing claws 16 are connected in a deep groove 17 or a shallow groove 18 in a sliding mode, then sawteeth are processed at one end of a sliding rod 19, one end of the sliding rod 19 with the sawteeth extends into the push rod 13, the sawteeth face the indexing claws 16 of the block 12, then the push rod 13 is adhered in the cap shell 1, the groove 14 of the block 12 faces the ratchet 10, then the spring 15 is placed in the groove 14, one end of the spring 15 is adhered to the ratchet 10, the stop piece 11 is formed by the block 12 and the spring 15, and plays a role in limiting on the rotation of the, then install cassette 4 in the helmet shell 1, when the safety helmet was worn, cassette 4 and coiling mechanism were located the position of people's ear respectively, took the area and the right knot area bonds to constitute the back hoop in the helmet shell 1 with the left side at last, took the area to be connected with the Japanese to detain on the left side, when people wore the safety helmet, took the right knot of pull to carry out the elasticity regulation of back hoop through the pull.

The working process is as follows: wearing the safety helmet, manually and slightly pulling the lower cheek band 2 with the clamping piece 3, if the lower cheek band 2 can not be pulled out from the rotating shaft 6 of the rolling device, pushing the slide rod 19, the side of the slide rod 19 with the sawtooth is contacted with the indexing claw 16, so that the indexing claw 16 slides out from the shallow groove 18 and slides into the adjacent deep groove 17 under the action of the spring 15, at the moment, the stopper 12 is separated from the ratchet wheel 10, so that the lower cheek band 2 can be freely stretched, then the clamping piece 3 on the lower cheek band 2 is clamped into the clamping seat 4 on the helmet shell 1, finely adjusting the length of the lower cheek band 2 and pressing the slide rod 19 again, so that the side of the slide rod 19 with the sawtooth is contacted with the indexing claw 16, the stopper 12 rotates under the action of the indexing claw 16 and the slide rod 19, so that the indexing claw 16 slides out from the deep groove 17 and slides into the adjacent shallow groove 18, at the moment, the ratchet wheel 10 is embedded into the groove 14 of the stopper 12, so as to prevent the rotating shaft 6 from rotating, the wearing of the safety helmet is completed, the safety helmet can be taken down by taking the clamping piece 3 out of the clamping seat 4, and the sliding rod 19 can be pressed again to release the limitation on the rotating shaft 6, so that the lower cheek band 2 is automatically wound into the winding device under the action of the torsion spring 7.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a safety helmet, includes cap shell (1), be connected with lower cheek area (2) of fastener (3) and with cassette (4) of fastener (3) joint, its characterized in that: be equipped with the coiling mechanism in cap shell (1), the coiling mechanism is including fixing support (5) in cap shell (1) and rotating rotation axis (6) of connecting between two supports (5) and being used for the rolling cheek area (2) down, the both ends of axis of rotation (6) are equipped with the provision torsional spring (7) of axis of rotation (6) direction of rotation restoring force, support (5) are worn out and ratchet (10) are connected to the one end of axis of rotation (6), ratchet (10) are equipped with outward and are used for limiting ratchet (10) pivoted and end latch fitting spare (11).

2. A safety helmet according to claim 1, wherein: the locking piece (11) comprises a stop block (12) and a push rod (13) used for pushing the stop block (12), a groove (14) matched with the ratchet wheel (10) is formed in one side of the stop block (12), and a spring (15) is arranged between the groove (14) and the ratchet wheel (10).

3. A safety helmet according to claim 2, wherein: one side that ratchet (10) was kept away from in dog (12) is equipped with a plurality of graduation claw (16), push rod (13) are hollow structure, the inner wall of push rod (13) is equipped with deep trouth (17) and shallow slot (18) that match with graduation claw (16), deep trouth (17) and shallow slot (18) alternate arrangement, graduation claw (16) sliding connection is in deep trouth (17) or shallow slot (18), sliding connection has slide bar (19) in push rod (13), the one end that slide bar (19) are close to dog (12) is the cockscomb structure.

4. A safety helmet according to claim 3, wherein: the depth of the groove (14) is larger than the thickness of the ratchet wheel (10).

5. A safety helmet according to claim 1, wherein: be equipped with blind groove (8) that match with torsional spring (7) on support (5), the both ends of axis of rotation (6) are equipped with through-hole (9), torsional spring (7) cup joint on axis of rotation (6), through-hole (9) are passed to the one end of torsional spring (7), the other end of torsional spring (7) inlays in blind groove (8).

6. A safety helmet according to claim 1, wherein: the cap shell (1) is provided with a rear hoop with tightness adjusting capability.