JPH0611533B2 - Shock absorber and manufacturing method thereof - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a shock absorber and a method for manufacturing the same, and more specifically, a shock absorber excellent in soundproofing, vibration proofing, and shock absorption, and a simple manufacturing thereof. Regarding the method.

[Prior Art and its Problems] Conventionally used shock absorbing members have mechanical structures such as air dampers and shock absorbers, or elastic such as elastic cushions to absorb impact force and vibration. Some of them absorb, but none of them are suitable for small articles such as armor, and they have a problem that they have a weak effect of absorbing shock or vibration against a sudden and strong impact force.

As a device devised to solve such a problem, for example, there is a baseball ball receiving device described in Japanese Utility Model Publication No. 61-91274.

The baseball ball receiving device is a shock absorbing sheet material in which a gel-like substance is covered with a flexible sheet member such as cloth, leather, and a foamed sheet, and a number of blocks are formed by quilting, etc. It is stored in.

However, the cushioning sheet member is a normal cloth, leather,
Although a flexible sheet member such as a foamed sheet material is used, since the gel-like substance is wrapped in a bag shape with the flexible sheet member, the flexible member is damaged when a large impact is applied, and There is a risk that gel-like substances will fly out.

When the gel-like substance is wrapped in the foam sheet material and sewn to the exterior body of the glove, a hole is formed in the foam sheet material, and when the hole receives an impact, the foam sheet material tears. It may end up.

Further, the flexible sheet member is flexible but not stretchable, so that it cannot be attached to, for example, a joint portion or a complex shaped portion. Therefore, even if the impact sheet member can be applied to a baseball ball receiver, it cannot be applied as a general impact absorber.

[Object of the Invention] An object of the present invention is to solve the above-mentioned problems, to have excellent shock absorption and to be able to sew, and to easily follow the movement of the mounted object. It is an object of the present invention to provide a shock absorber that can be attached to a curved surface of the.

[Means for Achieving the Object] (Structure) The structure of the first invention for achieving the above object is to provide a stretchable knitted fabric on both surfaces of a silicone gel layer, the knitted fabric being coated with the silicone gel. It is a shock absorber characterized by being superposed so as to be impregnated.

According to a second aspect of the invention, a stretchable knitted fabric is superposed on both sides of the silicone gel layer so that the knitted fabric is impregnated with the silicone gel, and the surface of each knitted fabric opposite to the gel layer. A shock absorber characterized by being coated with silicone rubber.

The silicone gel preferably has a penetration of more than 200 as measured by a JIS K-2808 penetration tester. This is because a silicone gel with a penetration of more than 200 has excellent flexibility and shock absorption.

Examples of the silicone gel include Si-OH,
Silicone obtained by cross-linking siloxanes having a reactive group such as Si-OR (wherein R represents a substituent such as a lower alkyl group), Si-H, and Si-CH = CH ₂ with a catalyst. Gels are preferred. The degree of cross-linking may be adjusted so as to achieve the above penetration.

The silicone gel is sandwiched between a pair of knitted fabrics with a certain thickness so that the stretchable knitted fabric is partially impregnated.

The thickness of the silicone gel layer is appropriately determined depending on what kind of member the shock absorber is applied to.

Examples of the stretchable knitted fabrics include stretch fabrics, knitted fabrics such as knits and jerseys.

The silicone gel may be, for example, a heat vulcanizing type or a room temperature vulcanizing type, or may be a one-component type or a two-component type. For example, KE-104 gel [trade name, manufactured by Shin-Etsu Chemical Co., Ltd.] is preferable.

The shock absorber having the above structure can be manufactured as follows according to the method of the present invention.

That is, as a configuration of the third invention, a silicone gel layer is formed on one side of a stretchable knitted fabric, and a pair of knitted fabrics with silicone gel is formed so that the gel is impregnated with the gel, and then the silicone gel layer is formed. A method for manufacturing an impact absorber, characterized in that a pair of knitted and woven fabrics with gel are pressure-bonded together and cross-linked.

According to a fourth aspect of the present invention, a silicone gel layer is formed on one side of a stretchable knitted fabric, a knitted fabric is provided with a silicone gel so as to be impregnated with the silicone gel, and then the silicone of the knitted fabric with gel is formed. In the method for producing an impact absorber, the gel layer is pressure-bonded with another knitted fabric so that the knitted fabric is impregnated with silicone gel and then crosslinked.

In the methods of the third and fourth inventions, the silicone gel layer may be provided after coating the other side of the knitted fabric on which the silicone gel layer is provided with the silicone gel layer. It is also possible to superimpose stretchable knitted fabrics on both surfaces and then coat the surface of the other knitted fabric not provided with the silicone gel layer with silicone gel.

(Operation) Since the shock absorber according to the present invention uses the stretchable knitted fabric, when the shock absorber is attached to the member which is movable and deformed, the deformation and operation of the member are followed. Since the knitted fabric is impregnated with the silicone gel layer, the silicone gel layer and the knitted fabric are not separated, and the silicone gel layer and the knitted fabric are separated according to the movement of the movable deformable member as described above. Never. And since the silicone gel layer is provided between the pair of knitted fabrics, this shock absorber,
Absorbs external shock. In particular, in a shock absorber in which a silicone gel layer having a penetration of more than 200 is interposed between a pair of knitted fabrics, the movable and deformable members are joints of the human body, palms,
In such a case, this shock absorber absorbs shock to the extent that it does not damage the human body, and at the same time transmits a suitable sense of shock to the human body. In addition, by adjusting the thickness of the silicone gel, it is possible to provide a shock absorber that does not give any feeling of shock.

In addition, this shock absorber prevents the gel from leaching from the inside to the outside of the stretchable knitted fabric by coating the surface of the stretchable knitted fabric without the silicone gel layer with silicone rubber. To be done. Therefore, the impact absorbing body in which the surface of the knitted fabric is coated with silicone rubber can be handled without a sticky feeling peculiar to silicone gel when held in the hand.

This shock absorber is used for martial arts such as karate, kendo, bayonet,
Nagi swords, martial arts such as martial arts, torso, basket, shin, etc.
Sports such as baseball, skiing, gymnastics, American football, soccer, rugby, hockey, auto racing, motocross, motor boat racing, rock climbing, skydiving, hang gliding, horse racing, fencing, shooting helmets, catch faces, snares, Mitts, gloves, elbow pads, internal cushioning materials for ski shoes, mats, shoulder projectors, knee pads, shoe soles, industrial work helmets, equipment for the injured, school facilities, accident prevention equipment, household equipment, infants Suitable for instruments, piano soundproofing equipment, soundproofing equipment such as listening rooms, anti-vibration equipment for dance lessons and jazz dance lessons, vehicle-related equipment such as headrests, safety belts, seats, and cushion pads used for press machines. To It is possible to use. On the other hand, the shock absorber according to the present invention comprises a stretchable knitted fabric impregnated with silicone gel, formation of a silicone gel layer, pressure bonding between knitted fabrics with gel, cross-linking or knitted fabric onto silicone gel layer in knitted fabric with gel. Since it can be manufactured by pressure bonding and cross-linking, the number of steps is simplified.

[Embodiment] Next, an embodiment of the present invention will be described. It is needless to say that the present invention is not limited to the following embodiments, and can be appropriately modified and implemented within the scope of the gist of the present invention.

As shown in FIG. 1, this shock absorber 1 has a stretchable knitted fabric 2 and a silicone gel layer 3 so that a part of the silicone gel is impregnated in the stretchable knitted fabric 2 such as a jersey fabric. It is formed by sandwiching.

The silicone gel layer 3 may be formed on the entire surface of the knitted fabric 2. Alternatively, as shown in FIG. 1, the edge 4 is not provided with the silicone gel layer 3 and ears for sewing are formed. You may keep it.

Furthermore, as shown in FIG. 2, a planar circular silicone gel layer 3a or a planar rectangular silicone gel layer 3b.
May be formed.

It is also possible to form a silicone rubber coating layer 5 on the side of the knitted fabric 2 opposite to the silicone gel layer 3.

As shown in FIG. 3, this shock absorber 1 has a stretchable knitted fabric 2 [step (a)] in which one surface is impregnated with a silicone gel layer 3 with a part of the silicone gel and the knitted fabric 2
A knitted fabric 6 with gel is formed so as to have a predetermined thickness from the surface of the [step (b)], and then a pair of knitted fabric 6 with gel are opposed to each other so that the silicone gel layers 3 face each other. Then, [(c) step] is directly pressure-bonded and vulcanized to manufacture [(d) step].

Alternatively, the knitted fabric 2 may be newly superposed on the silicone gel surface of the knitted fabric 6 with gel [steps (e) and (f)], and then pressure-bonded and vulcanized as it is to manufacture.

[Effects of the Invention] According to the present invention, the following effects can be achieved.

(1) This shock absorber is excellent in shock absorption because it consists of a pair of stretchable knitted fabrics sandwiching the silicone gel layer.

Especially when the penetration is over 200, when the shock absorber uses silicone gel, when this shock absorber is applied to the human body, it gives a moderate impact feeling and does not damage or discomfort the human body. The shock can be absorbed to some extent.

Therefore, this shock absorber can be suitably used as a shock absorber used for the safety and protection of the human body such as sports equipment and armor.

(2) Since it uses a silicone gel, it has excellent heat resistance and durability. Therefore, when this shock absorber is used for medical purposes, it can withstand sterilization at high temperatures.

(3) Since the impact absorbing body is provided with the silicone gel layer so that the knitted fabric is partially impregnated with the silicone gel, the knitted fabric and the silicone gel layer are not separated from each other, and the life can be extended. .

(4) Since this shock absorber uses a stretchable knitted fabric, it is possible to make the movable member, the rotating member, or the part such as the joint part of the human body follow the movement of the mating member, and the polar surface part. Can also be attached in close contact.

(5) Since this shock absorber uses the knitted fabric, it can be sewn on a mating member made of cloth or leather.

(6) This impact absorber can prevent the silicone gel layer from oozing from the surface of the knitted fabric by coating the surface of the knitted fabric opposite to the silicone gel layer with silicone rubber. At the same time, stickiness on the surface of the knitted fabric is eliminated, and handling can be facilitated.

(7) This shock absorber is a stretchable knitted fabric with a silicone gel layer, so that the gel partially impregnates the knitted fabric,
By providing, it can be easily manufactured.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a front view showing another embodiment of the present invention, and FIG. 3 is a process drawing showing a procedure of a manufacturing method according to the present invention. 1 ... Shock absorber, 2 ... Knitted fabric, 3 ... Silicone gel layer, 5 ... Coating layer,

Claims (8)

[Claims] 1. A shock absorber characterized in that a stretchable knitted fabric is laminated on both sides of a silicone congel layer so that the knitted fabric is impregnated with the silicone gel. 2. The silicone gel has a penetration of 200.
The shock absorber according to claim 1, wherein the shock absorber exceeds the above. 3. A stretchable knitted fabric is superposed on both sides of the silicone gel layer so that the knitted fabric is impregnated with the silicone gel, and on the surface of each knitted fabric opposite to the silicone gel layer, A shock absorber characterized by being coated with silicone rubber. 4. The silicone gel has a penetration of 200.
The shock absorber according to claim 3, wherein the shock absorber exceeds the above. 5. A stretchable knitted fabric is provided with a silicone gel layer on one side thereof, and a knitted fabric is provided with a pair of knitted fabrics with gel so as to be impregnated with the silicone gel. A method for producing an impact absorber, which comprises press-bonding a knitted fabric with a gel and crosslinking the knitted fabric. 6. The silicone gel has a penetration of 200.
The method for manufacturing an impact absorber according to claim 5, which is as described above. 7. A stretchable knitted fabric is provided with a silicone gel layer on one side thereof, a knitted fabric is provided with a gel so as to be impregnated with the silicone gel, and then the silicone gel layer of the gelled knitted fabric is formed. A method for producing an impact absorber, which comprises press-bonding another knitted fabric so as to impregnate this knitted fabric with a silicone gel and crosslinking the knitted fabric. 8. The method for manufacturing an impact absorber according to claim 7, wherein the silicone gel has a penetration of more than 200.