CN211722025U

CN211722025U - Safety helmet

Info

Publication number: CN211722025U
Application number: CN202020235246.8U
Authority: CN
Inventors: 方冠傑
Original assignee: Nan Pao Resins Chemical Co ltd
Current assignee: Nan Pao Resins Chemical Co ltd
Priority date: 2020-03-02
Filing date: 2020-03-02
Publication date: 2020-10-23
Anticipated expiration: 2030-03-02

Abstract

A safety helmet includes a plurality of assemblies, and an adhesive. Each assembly part comprises a main part and at least one bonding part which extends out of the main part integrally and is smaller than the main part in thickness. The adhesive is connected between the bonding parts of two adjacent assembly parts, so that the bonding parts are overlapped and bonded. The safety helmet manufactured by the assembly has high structural strength.

Description

Safety helmet

Technical Field

The utility model relates to a helmet, in particular to a safety helmet.

Background

One of the conventional methods for manufacturing a safety helmet is to stack a plurality of layers of prepreg cloth in a cavity of a mold to form a prepreg unit, and then heat and press the prepreg unit to obtain the safety helmet. Only, during the stacking of the prepregs, the position and angle of the prepregs in the mold cavity must be constantly fine-tuned so that each prepreg layer is correctly superimposed on the previous prepreg layer. This method of manufacture has the disadvantage of long stacking times, and also the time required to harden the pre-preg units into an integrally formed helmet is relatively long. Therefore, there is a need to provide a different method for manufacturing safety helmet for selection and use in the industry, and even more preferably, to further shorten the production time of the safety helmet and maintain the predetermined strength of the safety helmet.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to provide a safety helmet that overcomes at least one of the disadvantages of the background art.

The utility model discloses a safety helmet contains a plurality of built-up members, and adhesive.

Each assembly part comprises a main part and at least one bonding part which extends out of the main part integrally and is smaller than the main part in thickness.

The adhesive is connected between the bonding parts of two adjacent assembly parts, so that the bonding parts are overlapped and bonded.

The safety helmet, the at least one bonding part of each assembly part extends out from the main part along the arc substantially.

The safety helmet of the present invention, wherein the at least one bonding portion of each assembly member is substantially radially superposed with the at least one bonding portion of the corresponding assembly member.

Safety helmet, this main part portion of each built-up member has along the medial surface that radially lies in the inboard, and be opposite to the lateral surface of this medial surface, this main part portion has and defines out the thickness along radial extension with this medial surface and this lateral surface, each portion of binding has along radial mutual opposition and in essence along the arc to the bonding surface and the connection face that extend, each portion of binding has and defines out the thickness along radial extension with this connection face and this bonding surface, the thickness of this at least one portion of binding of each built-up member is about half of the thickness of this main part portion that corresponds.

The safety helmet, the quantity of built-up member is two, the portion of binding of built-up member radially superposes each other and binds.

Safety helmet, the quantity of built-up member is three, one of them the built-up member includes two the portion of binding, respectively from this main part portion both sides toward outer protruding and with remaining two the portion of binding of built-up member superposes each other and binds.

The safety helmet, the adhesive is epoxy structural adhesive.

The beneficial effects of the utility model reside in that: provides another novel structure of safety helmet different from the one-piece structure for the industry to choose. The safety helmet is manufactured by directly manufacturing the assembly part by using the thermoplastic sheet material and then bonding the assembly part, and compared with the prior art, the safety helmet can save a lot of time.

Drawings

Other features and advantages of the present invention will become apparent from the following detailed description of the preferred embodiments with reference to the accompanying drawings, in which:

FIG. 1 is a cross-sectional view, taken in the left-right direction, and illustrating a first embodiment of the safety helmet of the present invention;

FIG. 2 is a fragmentary cross-sectional view illustrating the first embodiment;

FIG. 3 is a flow chart illustrating a method of making the first embodiment of the present invention;

FIG. 4 is a schematic top view illustrating a thermoplastic sheet material being cut into a plurality of flat members to be processed in an assembly manufacturing step of the manufacturing method of the first embodiment;

FIG. 5 is a schematic view illustrating the step of hot-pressing the workpiece to be processed into a plurality of different assemblies by different molds;

fig. 6 is a schematic view illustrating another manufacturing method of the first embodiment of the safety helmet of the present invention, in the manufacturing step of the assembly member, the thermoplastic sheet is divided into the members to be processed, and the members to be processed are respectively hot-pressed by the same mold;

fig. 7 is a schematic sectional view illustrating that a plurality of intermediate plate members obtained by hot-pressing the to-be-processed member are also cut into the assembly in the assembly manufacturing step;

FIG. 8 is a schematic view illustrating the assembly manufacturing steps of yet another method of manufacturing the first embodiment of the headgear of the present invention; and

fig. 9 is a cross-sectional view illustrating the second embodiment of the safety helmet of the present invention, which is cut along the left-right direction, and the viewing angle is from the front to the back, so the left side of the drawing is the right side of a user, and the right side of the drawing is the left side of the user.

Detailed Description

Before the present invention is described in detail, it should be noted that in the following description, like elements are represented by like reference numerals.

Referring to fig. 1 to 2, the first embodiment of the safety helmet of the present invention is suitable for use as a safety helmet 1 (see fig. 1) for a construction site, but not limited thereto, and the first embodiment can also be used as a safety helmet for a motorcycle or a bicycle.

The helmet 1 comprises two assemblies 6, 6' and an adhesive 9.

Each of the assembly members 6, 6 'includes a main member portion 61, 61' curved in an approximate arc shape, and an adhesive portion 62, 62 'integrally extending from the main member portion 61, 61' substantially along the arc direction.

The main part 61, 61' of each assembly member 6, 6' has an inner side 611, 611' located radially inside and an outer side 612, 612' opposite to the inner side 611, 611 '. Each inner side 611, 611 'and the corresponding outer side 612, 612' define a substantially radially extending thickness T1.

Each of the bonding portions 62, 62' has one bonding surface 621, 621' radially opposite to each other and extending substantially along an arc direction, and one connecting surface 622, 622 '. Each connecting surface 622, 622 'and the corresponding bonding surface 621, 621' define a thickness T2 extending substantially in a radial direction. The thickness T2 defined by each bonding portion 62, 62 'is about half the thickness T1 defined by the corresponding master portion 61, 61' and is less than the thickness T1.

The connecting surface 622 of the bonding portion 62 of one assembly 6 is integrally connected to the corresponding inner side surface 611, and the bonding surface 621 of the bonding portion 62 is spaced from the corresponding outer side surface 612. The connecting surface 622' of the bonding portion 62' of another assembly 6' is integrally connected to the corresponding outer side surface 612', and the bonding surface 621' of the bonding portion 62' is spaced apart from the corresponding inner side surface 611 '.

The adhesive 9 is connected between the bonding surfaces 621, 621 'to bond the bonding portions 62, 62' radially overlapped. The adhesive 9 is an epoxy structural adhesive, such as: a structural adhesive manufactured by 3M company with model number DP420NS, or a structural adhesive manufactured by Henkel company with model number LOCTITE EA 3455.

Referring to fig. 3 to 5, a method of manufacturing the first embodiment of the helmet 1 includes an assembly manufacturing step S1 and an adhering step S2.

In the assembly manufacturing step S1, a thermoplastic sheet 2 with a thickness of 1.00mm and a length and width of 350mm and 350mm is cut into two to-be-processed sheets 3 with a truncated oval shape as shown in fig. 2. In the first embodiment, the thermoplastic sheet 2 is a carbon fiber sheet made by Nanbao resin chemical plant Inc. with the model number NR-2600. In other variations of the present embodiment, the thickness of the thermoplastic sheet 2 can also be 0.1mm to 3.0 mm.

Next, in the assembly manufacturing step, two molds 4 and 4' having mold cavities of different shapes are prepared, and the board 3 to be processed is placed in the molds 4 and 4' respectively and hot-pressed to manufacture the assemblies 6 and 6 '.

Wherein the hot pressing temperature of each die 4, 4' in the hot pressing is 180 ℃, and the hot pressing pressure to the plate 3 to be processed is 15kg/cm²The hot pressing time for the plate 3 to be processed is 120 seconds. In other embodiments of the present invention, the hot pressing temperature of the dies 4 and 4' during hot pressing can be from 100 ℃ to 340 ℃, and the hot pressing pressure of the plate 3 to be processed can be 5kg/cm²To 30kg/cm²And the hot pressing time can also be 30 seconds to 120 seconds.

In another variation of the present embodiment, the thermoplastic plate 2 may be cut into the plate 3 to be processed, which is substantially square, and the assembly parts 6, 6' may be formed by cutting the excess part after hot pressing.

Referring to fig. 1, 2 and 5, in the bonding step S2, the adhesive 9 is coated on the bonding surfaces 621 and 621', and the bonding portions 62 and 62' are radially overlapped and bonded so that the bonding surfaces 621 and 621 'face each other, so as to bond the assembly members 6 and 6', thereby obtaining the safety cap 1.

In the first embodiment, the thermoplastic sheet 2 is first manufactured into the assembly parts 6, 6', and then the adhesive 9 is used to bond the bonding surfaces 621, 621' of the bonding parts 62, 62', so that the assembly parts 6, 6' are connected to each other in a manner that the bonding parts 62, 62' are overlapped and bonded, and the radial overlapping bonding structure of the bonding parts 62, 62' can also make the structural strength of each bonding part greater than that of the main part parts 61, 61 '.

Referring to fig. 3, 6 and 7, another manufacturing method of the first embodiment of the safety helmet 1 of the present invention is similar to the above, and the difference is: in the assembly manufacturing step S1, the thermoplastic sheet 2 is first cut into two flat sheets 3 to be processed having the same shape and being shaped like a plate, and then the sheets 3 to be processed are sequentially hot-pressed into two intermediate sheets 5, 5' having the same shape by using the same mold 4 ". Wherein the hot pressing temperature of the die 4' during hot pressing is 180 ℃, and the hot pressing pressure on the plate 3 to be processed is 12kg/cm²The hot pressing time was 75 seconds. It should be noted that, in other variants of the manufacturing method, the hot-pressing temperature of the mold 4 ″ can also be between 100 ℃ and 340 ℃, and the hot-pressing pressure on the plate 3 to be treated can also be 5kg/cm²To 30kg/cm²The hot pressing time of the plate 3 to be treated can likewise be 30 seconds to 120 seconds.

In the assembly member manufacturing step S1, after the intermediate plate members 5 and 5 'are formed by hot pressing, a strip-shaped portion is cut from the outside to the inside along an arc of one of the intermediate plate members 5 to manufacture one of the assembly members 6 from the one of the intermediate plate members 5, and a strip-shaped portion is cut from the inside to the outside along an arc of the other of the intermediate plate members 5' to manufacture the other of the assembly members 6 'from the other of the intermediate plate members 5'. Finally, as described in the first embodiment, the bonding portions 62, 62 'of the assembly members 6, 6' are bonded together in a radially superposed manner to form the safety helmet 1.

Referring to fig. 3 and 8, another manufacturing method of the first embodiment of the safety helmet 1 of the present invention is similar to the aforementioned manufacturing method, except that in the step of manufacturing the assembly, in step S1, the thermoplastic sheet material 2 (as shown in fig. 2) is first hot-pressed into a prototype of the safety helmet in a mold (not shown). Wherein the hot pressing temperature of the die during hot pressing is 180 ℃, and the hot pressing pressure on the thermoplastic plate 2 is 15kg/cm²The hot pressing time was 120 seconds. In other variants of the third embodiment, the hot-pressing temperature of the mold can likewise be from 100 ℃ to 340 ℃, for example 230 ℃, and the hot-pressing pressure on the thermoplastic sheet 2 can likewise be 5kg/cm²To 30kg/cm²The hot-pressing time of the thermoplastic sheet 2 can likewise be 30 seconds to 120 seconds.

Next, the thermoplastic sheet 2 with the hat preform is cut into halves from left to right, and the halves of the thermoplastic sheet 2 are cut as described in the above manufacturing method to manufacture the assembly members 6, 6'. Then, the assembly members 6, 6' are bonded in the bonding step S2 as well to produce the helmet 1 (see fig. 1).

Referring to fig. 9, a second embodiment of the safety helmet 1 of the present invention is similar to the first embodiment, except that the number of the assembling

members

7, 7', 7 "of the safety helmet is three. A second embodiment of the helmet will be described in detail below.

One of the assembly members 7 is shaped to substantially cover the parietal and frontal bones of a user, and includes a main member portion 71 at the center and two bonding portions 72 protruding outward from both sides of the main member portion 71. The other assembly member 7' is shaped to substantially cover the right temporal bone of the user and includes the main member portion 71' and the adhesive portion 72 '. The remaining assembly member 7 "is shaped to substantially cover the left temporal bone of the user and comprises the main member portion 71" and the adhesive portion 72 ".

The bonding portions 72 of the assembly 7 are bonded to the

bonding portions

72', 72 "of the assemblies 7', 7" on both sides by the adhesive 9, respectively, so that the adhesive 9 is connected between one of the bonding portions 72 and the bonding portion 72' and between the other bonding portion 72 and the bonding portion 72 ".

Note that the number of the

bonding portions

72, 72', 72 "of each

assembly

7, 7', 7" is not limited to one. Depending on the bonding requirements of the

corresponding assembly

7, 7', 7 ", the number of the

bonding portions

72, 72', 72" may be two, three, etc.

The method of making the second embodiment of the helmet is described below.

Referring to fig. 3 and 9, in the assembly manufacturing step S1, the thermoplastic sheet (not shown) is cut into a plate to be processed having a shape corresponding to the contour of the parietal bone and the forehead bone and two plates to be processed having shapes corresponding to the contour of the temporal bones of the left and right heads, respectively. Then, three different molds (not shown) are prepared, each of the plate members to be processed is placed in the respective mold, and the plate members to be processed are hot-pressed, thereby producing the

assembly members

7, 7', 7 ″.

In the bonding step S2, the bonding portions 72 of the assembly 7 and the

bonding portions

72', 72 "of the assemblies 7', 7" on both sides are bonded to each other in an overlapping manner.

To sum up, the utility model discloses utilize this adhesive 9 to bind built-up

member

6, 6', 7', 7 ", can make high structural strength's safety helmet 1, moreover, because the utility model discloses need not carry out numerous and diverse and consuming time preimpregnation cloth step of piling up, so can save many times to reduce production time cost, so can reach cost utility model's purpose really.

The above description is only an example of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made according to the claims and the description of the present invention are still within the scope of the present invention.

Claims

1. A safety helmet, characterized in that: the safety helmet comprises a plurality of assembly parts and an adhesive, wherein each assembly part comprises a main part and at least one bonding part which extends from the main part integrally and is smaller than the main part in thickness, and the adhesive is connected between the bonding parts of two adjacent assembly parts so as to enable the bonding parts to be overlapped and bonded.

2. The headgear of claim 1, wherein: the at least one bonding portion of each assembly member extends substantially along an arc from the main member portion.

3. The headgear of claim 2, wherein: the at least one bonding portion of each assembly is substantially radially superposed with the at least one bonding portion of the corresponding assembly.

4. The headgear of claim 3, wherein: the main part of each assembly part is provided with an inner side surface located at the inner side along the radial direction and an outer side surface opposite to the inner side surface, the main part is provided with a thickness which extends along the radial direction and is defined by the inner side surface and the outer side surface, each bonding part is provided with a bonding surface and a connecting surface which are opposite to each other along the radial direction and extend along the arc direction, each bonding part is provided with a thickness which extends along the radial direction and is defined by the connecting surface and the bonding surface, and the thickness of at least one bonding part of each assembly part is about half of the thickness of the corresponding main part.

5. The headgear of claim 1, wherein: the number of the assembly members is two, and the bonding portions of the assembly members are bonded to each other radially overlapping each other.

6. The headgear of claim 1, wherein: the number of the assembly parts is three, wherein one assembly part comprises two bonding parts which respectively protrude outwards from two sides of the main part and are bonded with the bonding parts of the other two assembly parts in an overlapping mode.

7. A safety helmet according to any of claims 1 to 6, wherein: the adhesive is an epoxy structural adhesive.