TWI693037B - Helmet liner - Google Patents

Abstract

A pad for a safety helmet, comprising: an outer protective layer, an inner protective layer and a plurality of breakable connectors; the outer protective layer has a first base layer and a plurality of first bumps, the plurality of first bumps Located on the first base layer and located inside the first base layer; the inner protective layer has a second base layer and a plurality of second bumps, the plurality of second bumps are located on the second base layer and located on the second The outer side of the base layer; the plurality of connecting pieces are connected to the plurality of first bumps and the plurality of second bumps; thereby providing better anti-collision capability, and further improving the safety of the wearer when wearing a helmet.

Description

Helmet liner

The invention relates to a safety helmet, in particular to a cushion of a safety helmet.

The main structure of a generally-available hard hat is shown in FIG. 1, which includes a shell 100, a Styrofoam liner 90, and a cloth layer 80. The main head protection effect is located on the outer layer of the hard hat. The outer shell 100 and the Styrofoam pad 90 located on the inner layer of the helmet provide a total of two layers of protection.

The first layer of protection provided by conventional helmets is mainly due to the hard texture of the shell 100 and the smooth surface characteristics. When the wearer's head is hit, the hard texture of the shell 100 reduces the impact force and the shell The smooth surface of 100 will shift the impact force and avoid direct impact on the wearer's head, thereby achieving the effect of unloading.

The second layer of protection provided by conventional helmets is mainly due to the slightly elastic characteristics of the Styrofoam pad 90, which reduces the shock force generated by the shell 100 after being impacted to avoid injury to the wearer's head .

However, when the shell 100 is subjected to an impact force greater than its supportability, and the shell 100 is cracked or deformed, the impactor will further squeeze the Styrofoam liner 90. In the early stage of the squeezing, the Styrofoam liner 90 is elastic, Compression can still be used to reduce the impact force, but when the Styrofoam liner 90 is compressed to a certain degree by the impact force, the texture will become harder due to the higher density, and it will appear that the impact force is directly transmitted to the wear The condition of the wearer's head is equivalent to having the impactor directly hit the wearer's head.

Therefore, if the anti-collision ability of the Styrofoam liner can be improved, the safety of the wearer when wearing a helmet must be improved, so it is necessary to improve the anti-collision capability of the Styrofoam liner.

The main object of the present invention is to provide a pad for a helmet, which can provide better resistance to impact and further enhance the safety of the wearer when wearing a helmet.

In order to achieve the above object, the present invention provides a liner for a helmet, which includes: an outer protective layer made of thermoplastic material, the outer protective layer having a first base layer and a plurality of first bumps, the A plurality of first bumps are provided on the first base layer and located inside the first base layer; an inner protective layer is located inside the outer protective layer and has a predetermined distance from the inner protective layer, the inner protective layer is made of Thermoplastic, and the inner protective layer has a second base layer and a plurality of second bumps, the plurality of second bumps are provided on the second base layer and located outside the second base layer; and, the plurality of disconnectable connections The material is thermoplastic, the plurality of connecting pieces have a predetermined length, the predetermined length is less than the predetermined distance, and the plurality of connecting pieces are connected to the plurality of first bumps and the plurality of second bumps; wherein, when When the outer protective layer receives a force from the outside to the inside, and the external force is less than a predetermined pressure, the first base layer is deformed to move the plurality of first bumps from a first position to a second position, and the The plural connection members are not disconnected, and when the external force is greater than the predetermined pressure, the plural connection members are disconnected.

In this way, the pad of the helmet of the present invention can provide better anti-collision ability, and can further improve the safety of the wearer when wearing the helmet.

[Prior art]

80: cloth layer

90: Styrofoam pad

100: shell

[this invention]

10: liner of hard hat

11: outer protective layer

13: The first grassroots

15: First bump

151: Center bump

21: inner protective layer

23: Second grassroots

25: second bump

31: Connector

S1: first position

S2: second position

S3: third position

10’: hard hat liner

13’: the first grassroots

15’: First bump

23’: Second grassroots

25’: Second bump

S3’: third position

10”: liner of hard hat

15”: the first bump

25”: Second bump

31”: connector

Figure 1 is a partial cross-sectional view of a conventional helmet.

FIG. 2 is a side view of the first preferred embodiment of the present invention, showing that the projections of the first bumps and the second bumps are partially overlapped, and the first bumps are in the first position, and the connectors Unopened state.

FIG. 3 is a side view from the perspective of FIG. 2, showing that each first bump is in the second position, and each connecting member is in an unbroken state.

FIG. 4 is a side view from the perspective of FIG. 2, showing that each first bump is in the third position, and each connecting member is in a disconnected state.

Fig. 5 is a cross-sectional view taken along line 5-5 of Fig. 2.

FIG. 6 is a first usage state diagram of the first preferred embodiment of the present invention, showing that the center bump is located at the second position, and the connecting piece connected thereto is not disconnected, and the other first bumps are located at the first position , And the connection of the connecting piece is not disconnected.

FIG. 7 is a second usage state diagram of the first preferred embodiment of the present invention, showing that the center bump is located at the third position, and the connecting member to which it is connected is disconnected, while the other first bumps are located at the second position, and The connection is not disconnected.

FIG. 8 is a third usage state diagram of the first preferred embodiment of the present invention, showing that each first bump is located at a third position, and each connecting member is in a disconnected state.

9 is a pressure test curve diagram of the first preferred embodiment of the present invention.

FIG. 10 is an impact test curve diagram of the first preferred embodiment of the present invention.

11 is a side view of the second preferred embodiment of the present invention, showing the first bump in the third position, and the first bump does not abut the second base layer, and the second bump abuts the first base layer .

12 is a side view of the second preferred embodiment of the present invention, showing the state where the first bump is in the third position, and the first bump is against the second base layer, and the second bump is not against the first base layer .

FIG. 13 is a side view of the third preferred embodiment of the present invention, showing that the positions of the first and second bumps are non-overlapping, and the connecting member is connected to the peripheral side of the first bump and the top of the second bump status.

14 is a schematic diagram of a third preferred embodiment of the present invention, showing that the connecting member connects the first bump and the second bump in a one-to-many manner.

FIG. 15 is a side view of the third preferred embodiment of the present invention, showing the state where the first and second bumps are completely overlapped, and the connecting member is connected to the top of the first and second bumps.

In order to explain the technical features of the present invention in detail, the following first preferred embodiment is described below with reference to FIGS. 2-10, in which: as shown in FIG. 2, a hard hat provided by the first preferred embodiment of the present invention The liner 10 is mainly installed in a helmet shell 100 (the shell 100 shown in FIG. 1 ). The number of gaskets 10 of the helmet can be plural, and are arranged in the safety in a distributed arrangement Used in the cap shell 100 and in conjunction with the Styrofoam liner 90 (as shown in FIG. 1 of the Styrofoam liner 90) in the conventional helmet, or arranged in a spliced arrangement, or a liner of the helmet The cushion 10 is provided in the helmet shell 100 for implementation. The first preferred embodiment uses a gasket 10 of the helmet as an example. The gasket 10 of the helmet is mainly composed of an outer protective layer 11 and a The inner protective layer 21 and a plurality of breakable connectors 31 are composed of, wherein: the outer protective layer 11 is made of thermoplastic plastic, in this preferred embodiment, taking polystyrene foam (Polystyrene Foam) as an example, it has an extension The outer protective layer 11 has a first base layer 13 and a plurality of first bumps 15. The plurality of first bumps 15 are disposed on the first base layer 13 and located inside the first base layer 13.

The inner protective layer 21 is located inside the outer protective layer 11 and has a predetermined distance from the inner protective layer 21. The inner protective layer 21 is made of thermoplastic plastic. In this preferred embodiment, expanded polystyrene is used as an example. It is a ductile material, and the inner protective layer 21 has a second base layer 23 and a plurality of second bumps 25, the plurality of second bumps 25 are disposed on the second base layer 23, and are located on the second base layer 23 Outside.

The material of the plurality of breakable connectors 31 is thermoplastic, in this preferred embodiment, the expanded polystyrene is taken as an example, which is a malleable material, and the plurality of connectors 31 have a predetermined length and are connected to For the plurality of first protrusions 15 and the plurality of second protrusions 25, the predetermined length is less than the predetermined distance, and the plurality of connecting members 31 are connected to the plurality of first protrusions 15 and the plurality of second protrusions 25.

Among them, as shown in FIGS. 2-4 and 6, when the outer protective layer 11 receives a force from outside to inside and the external force is less than 1.1Mpa (as shown in FIG. 6, and the external force is indicated by an arrow), The first base layer 13 is deformed to move the plurality of first bumps 15 from a first position S1 to a second position S2, and the plurality of connecting members 31 are not disconnected (as shown in FIG. 3). In the case of the external force, the plurality of first bumps 15 will be reset, and then move from the second position S2 to the first position S1 (from the state of FIG. 3 to the state of FIG. 2), due to the plurality of connectors 31 is not disconnected, so the gasket 10 of the helmet of the present invention can continue to be used; when the external force is greater than 1.1 MPa, the plurality of first bumps 15 are then moved to a third position S3, and the plurality of connectors 31 are The disconnection (as shown in FIG. 4), by the pulling force of the plurality of connecting members 31 between the plurality of first and second protrusions 15, 25, achieves the effect of releasing the force for the first time against the external force.

When the first preferred embodiment is actually implemented, the thermoplastic can also be thermoplastic materials such as nylon (PA), polycarbonate (PC), etc., so it has ductility after curing Thermoplastic materials should belong to the category to be protected under the concept of the present invention, so the material selection of the outer protective layer 11, the inner protective layer 21 and the plural connecting members 31 is not only based on this first preferred implementation Examples are limited; in addition, the ability of the plurality of connecting members 31 to withstand the external force will vary due to the composition of different thermoplastic materials, so the external force is not limited to the 1.1Mpa described in the first preferred embodiment.

In the first preferred embodiment, as shown in FIG. 2, the width of the plurality of first bumps 15 near the first base layer 13 is greater than the distance of the plurality of first bumps 15 away from the first base layer 13 The width of the side, the width of the plurality of second bumps 25 near the second base layer 23 is greater than the width of the side of the plurality of second bumps 25 away from the second base layer 23; thereby making the plurality of first, The second bumps 15 and 25 are not easily broken, thereby improving the structural strength of the plurality of first and second bumps 15 and 25.

In the first preferred embodiment, as shown in FIG. 2, the projections of each first bump 15 and each second bump 25 are partially overlapped; the plurality of connecting members 31 are connected to the plurality of first , The top of the second bump 15, 25.

In the first preferred embodiment, as shown in FIG. 4, when the plurality of first bumps 15 are located at the third position S3, the plurality of first bumps 15 abut against the second base layer 23, and the plurality of The two bumps 25 lean against the first base layer 13, and the second force against the first base layer 13 and the second base layer 23 is supported by the plurality of first and second bumps 15, 25 Second disappointing effect.

In the first preferred embodiment, as shown in FIG. 5, the plurality of connecting members 31 are arranged in the same direction, and the plurality of connecting members 31 are connected to the plurality of first and second bumps in a one-to-one manner 15.25; the above definition of the same direction arrangement is when the liner 10 of the helmet is flat; if the liner 10 of the helmet is not flat, it may cause the The cushion 10 is bent, and the connectors 31 are oriented in different directions.

The technical characteristics of the first preferred embodiment of the present invention have been described above, and the usage status of the first preferred embodiment of the present invention will be described below.

As shown in Figure 6-8, under normal conditions, when the pad is pressed by the external force, it will further spread from an impact point to an impact surface. Therefore, when the external force is greater than 1.1Mpa, the first to move is defined One of the first bumps 15 is a central bump 151, and the other plurality of the first bumps 15 are sequentially moved outward from the first position S1 to the second position S2 with the center bump 151 as the center and then move To the third position S3, when the plural first bumps 15 move from the first position S1 to the second position S2, and the plural connecting members 31 are in an unbroken state, by the plural connecting members 31. The pulling force between the plurality of first and second protrusions 15, 25 achieves the effect of releasing the force for the first time to the external force. Then, the plurality of connecting members 31 are disconnected due to the influence of the external force. At this time, The plural first bumps 15 move to the third position S3, and the plural first bumps 15 lean against the second base layer 23, and the plural second bumps 25 lean against the first base layer 13, With the support force of the plurality of first and second bumps 15, 25 between the first base layer 13 and the second base layer 23, the effect of releasing the force for the second time to the external force is achieved.

Please refer to FIGS. 2-4 and 9 again. FIG. 9 is the compression test of the first preferred embodiment. According to different compression rates, the disconnection points of the plurality of connecting members 31 are different. A predetermined pressure of less than 1.1 megapascals (Mpa) will disconnect the plurality of connecting members 31; as shown in Figures 2-4 and 10, Figure 10 is a simulation of the first preferred embodiment of the lining provided with the helmet of the present invention The impact test of the helmet shell of the pad 10, where the dotted line indicates the conventional helmet using the Styrofoam liner as described in the prior art, the maximum acceleration measured after being impacted is still 300G (G- Force), and the solid line indicates that the pad 10 of the helmet of the present invention replaces the Styrofoam pad as described in the prior art. The maximum acceleration measured after being impacted is 150G, and its impact resistance is The ability is significantly better than the helmet described in the prior art.

From this, it can be proved that the pad of the helmet of the present invention can provide better anti-collision ability through the technical features of the plurality of first bumps, the plurality of second bumps and the plurality of connecting pieces, which can further enhance the wearer Safety when wearing a helmet.

The pad 10' of the helmet of the second preferred embodiment of the present invention is mainly the same as the first preferred embodiment disclosed above, except that the second preferred embodiment is shown in FIG. When a bump 15' is located at the third position S3', the plurality of first bumps 15' may not lean against the second base layer 23', and the plurality of second bumps 25' lean against the first The base layer 13'; or, as shown in FIG. 12, when the plurality of first bumps 15' move to the third position S3', the plurality of first bumps 15' may also lean against the second base layer 23', The plurality of second bumps 25' do not lean against the first base layer 13'. Therefore, the movement of the plurality of first bumps 15' to the third position S3' is not limited to the aforementioned first preferred embodiment.

The remaining structures and functions of the second preferred embodiment are mainly the same as those of the aforementioned first preferred embodiment, so they will not be repeated here.

The pad 10" of the helmet of the third preferred embodiment of the present invention is basically the same as the first preferred embodiment disclosed above, except that the third preferred embodiment is shown in FIGS. 13-15, in which As shown in FIG. 13, the positions of each first bump 15 ″ and each second bump 25 ″ do not overlap, and the plurality of connecting members 31 ″ are connected to the circumferential side of the plurality of first bumps 15 ″ , And the top of the plural second bumps 25"; as shown in FIG. 14, the plural connecting members 31" are connected to the plural first and second bumps 15", 25" (for The connection relationship is clearly indicated, and the plurality of connection members 31" are represented by lines), and the arrangement direction of the plurality of connection members 31" is a non-codirectional arrangement; in addition, as shown in FIG. 15, each of the first bumps 15" and The positions of the second protrusions 25" may also be completely overlapped, and the plurality of connecting members 31" are connected to the tops of the plurality of first and second protrusions 15", 25". Therefore, the positional relationship of the plurality of first and second bumps 15", 25", the plurality of connecting pieces 31" are connected to the connection positions and arrangement directions of the plurality of first and second bumps 15", 25", It is not limited to the aforementioned first preferred embodiment.

The remaining structures and functions of the third preferred embodiment are mainly the same as those of the first preferred embodiment, so they will not be repeated here.

10: liner of hard hat

11: outer protective layer

13: The first grassroots

15: First bump

21: inner protective layer

23: Second grassroots

25: second bump

31: Connector

S1: first position

Claims (12)

A pad for a hard hat, which includes: An outer protective layer made of thermoplastic plastic, the outer protective layer has a first base layer and a plurality of first bumps, the plurality of first bumps are provided on the first base layer and located inside the first base layer; An inner protective layer is located inside the outer protective layer and has a predetermined distance from the inner protective layer. The inner protective layer is made of thermoplastic plastic, and the inner protective layer has a second base layer and a plurality of second bumps, the A plurality of second bumps are provided on the second base layer and located outside the second base layer; and The plurality of disconnectable connectors are made of thermoplastic plastic, the plurality of connectors have a predetermined length, the predetermined length is less than the predetermined distance, and the plurality of connectors are connected to the plurality of first bumps and the plurality of second Bump Wherein, when the outer protective layer receives a force from outside to inside and the external force is less than a predetermined pressure, the first base layer is deformed to move the plurality of first bumps from a first position to a second position , And the plurality of connectors are not disconnected, when the external force is greater than the predetermined pressure, the plurality of connectors are disconnected. According to the liner of the first item of the scope of patent application, the predetermined pressure is 1.1Mpa. According to the liner of the first item of the scope of the patent application, the position projections of each of the first bumps and each of the second bumps at least partially overlap. According to the gasket of the first item of the scope of the patent application, the projections of the first bumps and the second bumps do not overlap. According to the gasket of the first item of the patent application scope, wherein: the plurality of connecting pieces are connected to the tops of the plurality of first and second protrusions. According to the liner of the first item of the scope of the patent application, the plurality of connectors are arranged in the same direction. According to the gasket of the first item of the scope of the patent application, wherein the plurality of connecting pieces are connected to the plurality of first and second protrusions in a one-to-one or one-to-many manner. According to the liner of the first patent application, the width of the plurality of first bumps close to the first base layer is greater than the width of the plurality of first bumps away from the first base layer, The width of the plurality of second bumps near the second base layer is greater than the width of the plurality of second bumps away from the second base layer. According to the gasket of the first item of the patent application scope, wherein: the order in which the plurality of first bumps move from the first position to the second position defines the first bump that moves first is a The center bump, the other plurality of first bumps are sequentially moved outward from the first position to the second position with the center bump as the center. The liner of the helmet according to item 1 of the patent application scope, wherein: when the external force is greater than the predetermined pressure, the plural first bumps move from the second position to a third position, the plural first bumps It leans against the second base layer, and the plurality of second bumps leans against the first base layer. The liner of the helmet according to item 1 of the patent application scope, wherein: when the external force is greater than the predetermined pressure, the plural first bumps move from the second position to a third position, the plural first bumps It does not lean against the second base layer, and the plurality of second bumps lean against the first base layer. The liner of the helmet according to item 1 of the patent application scope, wherein: when the external force is greater than the predetermined pressure, the plural first bumps move from the second position to a third position, the plural first bumps It leans against the second base layer, and the plurality of second bumps does not lean against the first base layer.

Images