CN2930354Y

CN2930354Y - Damage guiding structure of helmet

Info

Publication number: CN2930354Y
Application number: CN 200620061502
Authority: CN
Inventors: 沈文振
Original assignee: XIAMEN XINKAI COMPOSITE MATERIALS SCIENCE AND TECHNOLOGY CO LTD
Current assignee: XIAMEN XINKAI COMPOSITE MATERIALS SCIENCE AND TECHNOLOGY CO LTD
Priority date: 2006-07-07
Filing date: 2006-07-07
Publication date: 2007-08-08
Anticipated expiration: 2016-07-07

Abstract

The utility model discloses a guiding breaking structure for safety helmet, which is provided with a plurality of hollows on the surface of a safety helmet shell, wherein the hollows weaken the intensity of the helmet shell, such that when the helmet shell is impacted by outer force, the hollows are first broken. The users can predefine the breaking mode according to requirement, thereby guiding breaking and controlling the breaking position by human behavior and reducing the impact of the breaking position on the head. At the same time, the breaking of the helmet shell can prolong the action time of speed change, thereby reducing the acceleration and action force, removing redundant energy, minimizing the impact force and maximizing the protection for head.

Description

The guiding of safety cap destroys structure

Technical field

The utility model relates to a kind of safety cap, refers to that especially a kind of guiding of safety cap destroys structure.

Background technology

In many occasions, since dangerous higher, therefore must cap safe in utilization.When safety cap can be subjected to clashing at people's head, farthest protect head to preserve from, this just needs the cap shell of safety cap must have high strength.Yet the intensity of cap shell but is not high more good more, and on the contrary, the dealer makes the cap shell break behind the powerful external force collision being subjected to when design cap shell usually, could eliminate maximum energy like this.Its reason is: according to mechanics principle, and directed force F=ma (m is a quality, and a is an acceleration), wherein quality is an invariant, so desire reduces and to make firmly F, and a is diminished; And a=Δ V/ Δ t (Δ V is a velocity variable, and Δ t is a time variation amount), wherein velocity variable can't change, and therefore will reduce acceleration, the action time of just necessary prolongation power; That is to say, in the process that the cap shell breaks, just can prolong action time, thereby reduce impulsive force, make head be subjected to as far as possible little injury.Here it is, and the said in the industry safety cap that can not break not is best safety cap.

But, though the dealer can eliminate energy by the mode that makes safety cap cap shell destroy, can when practical application, but as one wishes not to the utmost.Main cause is summarized as follows: the rigidity of (1) cap shell is difficult to grasp, and that is to say that the cap shell is subjected to great active force and just can destroys, and this duration and degree of heating is difficult to control; (2) when the cap shell is subjected to heavily hitting, its rupture location is unpredictable, in case rupture location is positioned at the deathtrap of head, as the crown, hindbrain or forehead etc., then can cause uncertain injury to human body; (3) country variant is different to the key protection point of head, and is therefore also different to the safety test grade of safety cap diverse location, when making safety cap, must handle respectively at country variant like this, increases cost relatively.

The utility model content

The purpose of this utility model is to provide a kind of guiding of safety cap to destroy structure, and it can be subjected to powerful external force at safety cap, and the guiding safety cap breaks in the precalculated position, allows head can obtain maximum protection.

For achieving the above object, technical solution of the present utility model is: a kind of safety cap guiding destroys structure, is provided with some depressions on safety cap cap shell surface.

Described depression is arranged at the outer surface or the inner surface of cap shell.

Described depression intermittently is provided with, or setting forms chase continuously.

Described depression is arranged at the zone of safety of the relative head of cap shell.

Described depression is arranged at position or ear back curve position or the crown and the hindbrain intersection location of volume anterior hair line.

After adopting such scheme, because the utility model is provided with some depressions on the cap shell surface of safety cap, make the cap shell a little less than the intensity relative thin of this recess, like this when the cap shell is subjected to powerful external force collision, at first break at recess, so, the dealer just can be as required design, destroy pattern in advance, thereby reaching guided bone destroys, it is the rupture location of artificial control cap shell, make the influence minimum of rupture location, the uncertain and mortal injury that may cause head of conventional security cap cap shell rupture location will not occur the head part; Simultaneously, utilize the cap shell in the process of breaking, but the action time (promptly improving Δ t) that extending speed changes; reduce acceleration (a value) thereby reach; and then reduce active force (F value), and can eliminate more energy like this, make the bump strength minimum that is subjected to, allow head obtain maximum protection.Moreover, the Design Mode that this kind guiding destroys, concerning the requirement of head key protection point, only needing to design different recessed position can be in response to different demand for country variant, and it is quite convenient therefore to manufacture.

Description of drawings

Fig. 1 is the structural representation of the utility model safety cap;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the view after the utility model safety cap is subjected to heavily to hit.

The specific embodiment

As shown in Figures 1 and 2, safety cap guiding destruction structure described in the utility model ties up to multiple material cap shell 1 surface of safety cap some depressions 2 is set.This depression 2 can process by the method for machining; Also can form by radium-shine patterning method cutting; Moreover also can be by the folded design method of row, promptly when multiple material cap shell 1 moulding, arrange the multiple material of depression 2 positions thin than other place, after 1 moulding of cap shell, this forms depression naturally like this.And described depression 2 is arranged at the zone of safety of cap shell 1 relative head, as shown in FIG., this depression 2 can be arranged at position or ear back curve position or the crown and the hindbrain intersection location etc. of volume anterior hair line, above-mentioned position all is the comparatively safe zones of head part, that is to say, even above-mentioned position is subjected to minor injury, can not cause too big influence to human body yet.

Because the existence of described depression 2; make cap shell 1 a little less than the intensity relative thin at this place; like this when cap shell 1 is subjected to powerful external force collision; cap shell 1 at first breaks (as shown in Figure 3) at depression 2 places, and 2 the position of caving in can arrange in advance, destroys thereby reach guided bone; it is the rupture location of artificial control cap shell 1; so not only can eliminate more energy, make the bump strength minimum that is subjected to, rent can not bring big danger to head yet, thereby allows head obtain maximum protection.

In addition, described depression 2 can be arranged at the outer surface of cap shell 1, also can be arranged at its inner surface, as long as make a little less than the predeterminated position intensity relative thin, can reach the purpose of this utility model.Moreover this depression 2 can intermittently be provided with, and also can be provided with continuously and form chase.

Need to prove; the position of above-mentioned depression 2 can be provided with arbitrarily; promptly be not limited to aforesaid volume anterior hair line position or ear back curve position or the crown and hindbrain intersection location; it can be according to the difference of country variant to the head key protection point; and be provided with arbitrarily, even can use the requirement of colony to design according to difference.Therefore as long as the depression of bootable destruction is set on the cap shell, no matter its position is how, all should be in protection domain of the present utility model.

Claims

1, a kind of guiding of safety cap destroys structure, it is characterized in that: be provided with some depressions on safety cap cap shell surface.

2, the guiding of safety cap destroys structure according to claim 1, and it is characterized in that: described depression is arranged at the outer surface or the inner surface of cap shell.

3, the guiding of safety cap destroys structure according to claim 1, and it is characterized in that: described depression intermittently is provided with, or setting forms chase continuously.

4, the guiding of safety cap destroys structure according to claim 1, it is characterized in that: described depression is arranged at the zone of safety of the relative head of cap shell.

5, the guiding of safety cap destroys structure according to claim 1, and it is characterized in that: described depression is arranged at position or ear back curve position or the crown and the hindbrain intersection location of volume anterior hair line.