JP5274112B2 - Buffer parts - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a novel buffer part exhibiting excellent buffering properties (shock absorbing properties) and capable of controlling the properties and its manufacture method. <P>SOLUTION: The buffer part 1 is provided with a flexible casing 2, a super deformation absorbing body 3 housed inside it and functioning mainly as a shock absorbing material with a 500% or greater elongation and a deformation allowing part structure 4 for releasing a compressive load applied to the part 1 as an expansive deformation of the body 3 in a direction approximately orthogonal to the load direction. On a boundary face between the body 3 and the casing 2, at least a part is fixed. Thereby when the compressive load is applied to the part 1, the expansive deformation of the body 3 in the structure 4 absorbs the load and makes the body 3 recover an original figure after the release of the load. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

The present invention relates to a shock absorbing part that is mounted on a shock absorbing material such as sports shoes or precision equipment and that can absorb shocks and vibrations that are applied to the shock absorbing material as it is, and has a particularly excellent shock absorbing property ( shock absorption) exert, also relates to a novel buffer per tool that can control the damping characteristics.

In order to absorb shocks and vibrations that would otherwise be applied to the cushioning material as it is, cushioning parts (buffering material) are often mounted on cushioning materials such as sports shoes and precision equipment. We have earnestly researched and developed this type of cushioning material and have filed a patent application (see, for example, Patent Document 1).
This Patent Document 1 is one in which both ends of a casing are sealed in a state where a gel-like cushioning functional material is filled in a flexible casing (tube) made of a thermoplastic resin. The buffer material can be used as a general purpose, and has an appropriate effect. However, this type of cushioning material still has room for improvement in the following points.

  That is, in such a buffer material, the casing and the buffer function material (filler) are somewhat crushed by the applied compressive load, and shock (vibration) is mainly absorbed by the crushing deformation at this time. . However, since the buffer material such as Patent Document 1 has a structure in which the inside of the tube is completely sealed (completely sealed structure), when the casing is crushed to a certain limit, the internal buffer function material escapes. The state becomes lost, and the internal pressure in the casing reaches the limit. When such a state is reached, the cushioning material is hardly crushed further (it takes a very excessive force to further crush from this state, and it is also conceivable that it will eventually rupture). The force (apparent hardness) increases, and the buffering performance can no longer be exhibited.

In other words, the cushioning material as in Patent Document 1 is designed (intended) to exhibit the cushioning performance within the compression limit (crushing tolerance limit), and exceeds the tolerance limit. For example, it was not assumed that the casing collapsed until the casing became a so-called Peshanko state. It should be noted that such a Peshanco state is a crushing state in which the opposing casings are almost in close contact with each other, but in actuality, the casings are completely separated because the casing is filled with a buffer function material. There is no close contact (however, in this specification, such a collapse in a Peshanco state is referred to as “complete collapse” for convenience). In addition, such complete crushing is a phenomenon that occurs when an extremely large load is concentrated on one location of the cushioning material, but in reality there is almost no way to apply such a load. The buffer material having a sealed structure disclosed in Patent Document 1 sufficiently exhibits a buffer function.
However, in this type of cushioning material, improvement in cushioning performance is always required, and further cost reduction is also demanded, and further improvement and development have been promoted.
JP 2007-321870 A

The present invention has been made as part of such development. The structure of the buffer material disclosed in Patent Document 1 has been fundamentally reviewed, and a structure (completely sealed structure) in which the buffer function material is sealed inside the casing is provided. amended, casing can exhibit buffering performance until completely collapsed state, also, the development of novel cushioning par tool that can recover such readily is when removing the full collapse compressive load from any state to the original state It is an attempt.

First, the buffer part according to claim 1 is:
A flexible casing;
It is a shock absorbing part that is housed in this interior and comprises a super-deformation vibration absorber that mainly functions as a shock absorbing function material,
The shock-absorbing part has a deformation allowing portion structure that releases a compressive load applied to the part as a bulging deformation of the super-deformation vibration absorber in a direction substantially orthogonal to the load direction,
Further, the boundary surface between the super-deformed vibration absorber and the casing is formed by fixing at least a part thereof,
With this configuration, when a compressive load is applied to the cushioning part, the compressive load is absorbed by the bulging deformation of the super-deformable vibration absorber in the deformation allowing portion structure, and after the compressive load is released, , The super deformation absorber is restored to the initial applied shape ,
Further, the casing is formed in a cylindrical shape having at least one end opened,
Further, the bulging deformation of the super-deformable vibration absorber in the deformation-permitting portion structure includes at least a projecting deformation to the outside of the super-deformable vibration absorber at the opening end of the casing .

Further, the cushioning part according to claim 2 is in addition to the requirement according to claim 1,
The super-deformed vibration absorber is characterized by having an elongation of 500% or more.

The buffer part according to claim 3, in addition to the requirements of claim 1 or 2,
The casing is formed as a single cylinder or a continuous body in which a plurality of cylinders are arranged in parallel.

Further, the cushioning part according to claim 4 is in addition to the requirement according to claim 3 ,
In the case where the casing is configured as a continuous body in which a plurality of cylinders are arranged in parallel, the partition walls of adjacent cylinders are not interposed.

Further, the buffer part according to claim 5 is in addition to the requirement according to claim 1, 2, 3 or 4 ,
The casing is characterized in that both end portions are opened, and the opening cross-sectional areas of these both end portions are different.

The buffer part according to claim 6, in addition to the requirements of the claims 1, 2, 3, 4 or 5, wherein,
The cushioning material to which the cushioning part is attached is formed with a receiving space at a site where a cushioning function is to be imparted.
In addition, the receiving space is formed with a deformable space that permits the projecting deformation of the super-deformed vibration absorber at the end of the casing.

The buffer part according to claim 7, wherein, in addition to the requirements of the claims 1, 2, 3, 4 or 5, wherein,
The cushioning material to which the cushioning part is attached is formed with a receiving space at a site where a cushioning function is to be imparted.
In addition, the receiving space is formed with a contact surface that comes into contact when the super-deformed vibration absorber protrudes and deforms at the end of the casing, and subsequent contact deformation of the super-deformed vibration absorber is limited by this contact. It is characterized by that.

Further, the buffer part according to claim 8 is in addition to the requirement according to claim 1, 2, 3, 4, 5, 6 or 7 ,
The cushioning part is attached in a state where at least a part is visible from the outside in a state where it is attached to a cushioning material required.
Further, the casing and the super-deformed vibration absorber are formed of a transparent or translucent material, and the super-deformed vibration absorber is further formed of two or more materials having different refractive indexes,
It is characterized in that two or more kinds of materials applied to the super-deformed vibration absorber are visually observed.

Further, the cushioning part according to claim 9 is in addition to the requirement according to claim 1, 2, 3, 4, 5, 6, 7 or 8 ,
The shock-absorbing part is mounted on the shock-absorbing material in a horseshoe-shaped curved state as viewed from the direction in which the compressive load acts,
At this time, the casing is provided with an appropriate thickness difference between the thickness on the inner side of the horseshoe and the thickness on the outer side of the horseshoe. It is characterized by that.

Further, the cushioning part according to claim 10 is in addition to the requirement according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9 ,
The shock-absorbing part is mounted on the shock-absorbing material in a horseshoe-shaped curved state as viewed from the direction in which the compressive load acts,
At this time, the casing is characterized in that at least one of the inner side of the horseshoe or the outer side of the horseshoe is formed in a bellows shape so as to be crushed and deformed without resisting a compressive load. .

Further, the buffer part according to claim 11 is in addition to the requirement according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 ,
The cushioning part is attached to a cushioning material required so that the projecting deformation of the super-deformed vibration absorber at the end of the casing to the outside can be visually observed.

Further, the cushioning part according to claim 12 is in addition to the requirement according to claim 6, 7, 8, 9, 10 or 11 ,
In the receiving space for the casing or the cushioning material, appropriate printing is performed in advance.
This printing is characterized in that the appearance is visually observed in a state where the cushioning parts are attached to the cushioning material required.

Further, the cushioning part according to claim 13 is in addition to the requirement according to claim 7 ,
Appropriate printing is performed on the contact surface of the shock-absorbing material in advance, and printing is not performed for the first time when the super-deformed vibration absorber protrudes from the casing end due to the compressive load and comes into contact with the contact surface. It is characterized in that the appearance is visually observed or printing that is different from that when no load is applied is visually observed.

The above-described problems can be solved by using the configuration of the invention described in each of the claims.
According to the first aspect of the present invention, in order to release the compressive load applied to the cushioning part as the bulging deformation of the super-deformed vibration absorber that is substantially perpendicular to the load direction, the super-deformed vibration absorber is not only absorbed, but also the super-deformed vibration absorber. It is possible to control how the impact force is weakened by controlling the way of swelling (deformation). For example, when both ends of the casing are opened and the super-deformed vibration absorber is freely projecting and deformed, the bulge deformation (protrusion deformation) of the super-deformed vibration absorber can be increased by changing the opening areas of both ends. Therefore, a larger load (impact) can be released to a larger opening area.
By the way, there are many conventional tube-shaped cushioning materials that apply air or gel, and these are filled and sealed in the tube, so the tube is compressed. As a result, even if a certain amount of buffering force is obtained, the compression limit is reached immediately, and it is not expected until the tube is completely crushed (a Peshanco state where the compressed tubes are almost in close contact). It was. In other words, since the conventional cushioning material is in a sealed form, it was not intended to have a cushioning function until the tube is completely crushed (because the packing is sealed in a sealed space). In the shock-absorbing parts of the present invention, the shock is absorbed and alleviated by the bulging deformation of the super-deformation vibration absorber, until the tube is completely crushed. The buffer performance can be controlled, and the buffer characteristic itself can be set as appropriate.
Further, according to the present invention, at least one end of the casing is opened, and the shock absorber is absorbed at the opening end by projecting and deforming the super-deformed vibration absorber to the outside. Absorbability) can be appealed to the user. Specifically, when the shock-absorbing part of the present invention is attached to a sports shoe, if the appearance of the protruding deformation at the end of the casing can be visually confirmed, the user can improve the high shock-absorbing performance of the shoe and the protruding deformation of the super-deformable vibration absorber. (You can actually see it with your eyes). In general, sports shoes, etc. are products that place emphasis on functionality as well as design, and instead of simply selecting a product based on the design that the user looks at, the part where the shock-absorbing parts are actually attached is handled. Since the cushioning performance is often confirmed by pressing with a finger or the like, what can realize such a high cushioning performance as a human sense has high commercial value.
Moreover, since at least one edge part is formed in an open state, a casing does not require sealing, such as heat welding, about this edge part, but can manufacture a buffer part at low cost.

  According to the second aspect of the present invention, since the super-deformed vibration absorber accommodated in the casing has an extremely high elongation rate of 500% or more, the super-deformed vibration absorber is not affected even when the shock absorbing part is completely crushed. It never breaks. For this reason, the buffer performance can be maintained for a relatively long time, and can be easily restored to the initial shape even from a completely collapsed state. In addition, since the super-deformed vibration absorber is made of such a material, the cushioning part can be installed in an acute-angled shape (a state close to a double fold), which is excellent in mountability.

Further, according to the invention of claim 3 , since the casing can be formed as a single cylindrical single body or a continuous body in which several casings are arranged, according to the situation (use / purpose) of a part having a buffer function, Buffer parts can be deployed in various variations. For example, if you want to add a buffering function to the entire area with a certain area, you can install several cylindrical type buffer parts or bend long buffer parts. However, if it is a continuum type buffer part, it is not necessary to consider how to be combined, how to bend it, etc., and it can be easily applied. Of course, when it is desired to provide a shock absorbing function in a pinpoint manner, it is preferable to apply a single cylindrical type shock absorbing part.

According to the invention described in claim 4, in the case of a continuum type buffer part, since the partition wall is not interposed, the continuum itself becomes one large casing, and the degree of freedom of deformation of the super-deformed vibration absorber in the casing is increased. Increase (in the casing, the super-deformation vibration absorber can be deformed without being restricted by the partition wall), and the shock absorption as a cushioning part can be enhanced. Conversely, for example, when the casing is formed of a single cylindrical body (including a bulkhead ant with a continuous body), the deformation of the super-deformed vibration absorber within the casing is limited only to the axial direction of the casing. However, in the case of a continuous type shock absorbing part without a partition wall, the deformation of the super-deformed vibration absorber in the casing is allowed in a direction almost perpendicular to the axial direction, so that the shock absorption is improved accordingly. Also, the time required for absorption (the time required to relieve the impact) can be shortened.
In the case of a continuous type buffer part having no partition wall, the shock absorption can be further improved by making the thickness of the casing thinner than that of a single body. Moreover, even if such a continuous-type cushioning part without a partition is formed by ordinary two-dimensional extrusion molding at the manufacturing stage, it can be flexibly flexibly three-dimensionally when mounted. Therefore, such a cushioning part is considered to be particularly suitable for elbow contact and knee contact for protecting a joint portion of a person who repeats complicated movements.

According to the invention of claim 5 , since both end portions of the casing are opened (opened), and these opening cross-sectional areas are different, the compression load (impact) applied to the buffer parts is It is possible to escape mainly to the larger opening cross-sectional area. Further, by adjusting the difference in the opening cross-sectional area, not only the directionality for releasing the impact, but also the distribution of how much to be released to which end can be set.
In addition, in order to make the opening cross-sectional area of both ends of the casing different, a method of cutting only one end side of the cushioning part (casing) obliquely or opening a small hole only on one end side while cutting both ends straightly Or a method of forming the entire casing into a tapered cylindrical shape.

According to the sixth aspect of the present invention, since a deformable space is formed in the receiving space for the shock-absorbing material to which the shock-absorbing parts are attached, the projecting deformation to the outside of the super-deformed vibration absorber at the end of the casing is free. Can be done in the state. For this reason, it is possible to sufficiently exhibit high buffering performance utilizing the properties (characteristics) of the super-deformed vibration absorber itself. In addition, for example, when the shock-absorbing parts are attached to a shock-absorbing material (product) such as sports shoes and the protruding deformation of the super-deformation vibration absorber is positively visually observed, the product has a high cushioning performance. Can be visually appealing.

According to the seventh aspect of the present invention, the receiving space for the shock-absorbing material is formed with a contact surface that comes into contact when the super-deformed vibration absorber is deformed in a projecting manner. Since it is limited, it is possible to assist restoration (return) when the load is removed. Further, it is possible to control the buffering characteristics such as stopping the buffering action halfway at the contact side end part and releasing the impact greatly to the other end part side. Furthermore, if printing is applied to the abutment surface in advance (pattern, pattern, color, etc.) and the super-deformed vibration absorber comes into contact with it, it can be viewed from the outside, so only when a compressive load is applied. The print can be visually observed or displayed differently from when it is not loaded (normal state), and high shock-absorbing performance can be effectively appealed together with the visual fun.

According to the invention of claim 8 , at least a part of the cushioning part attached to the cushioning material is mounted so that the appearance can be visually confirmed, and the casing and the super-deformed vibration absorber are both transparent or translucent. The super-deformed vibration absorber is made of two or more kinds of materials having different refractive indexes. For this reason, when the super deformed vibration absorber is deformed in various ways, the interface between the super deformed vibration absorbers having different refractive indexes due to light refraction, reflection, etc., looks interesting (for example, looks bright and shiny), In particular, it is possible to appeal high shock-absorbing performance while producing design fun without printing or the like.
In addition, the deformation here refers to a deformation in which the super deformed vibration absorber is flattened or compressed when the shock absorbing parts are viewed in the cross-sectional direction, in addition to the bulging deformation of the super deformable vibration absorber when subjected to a compressive load. Return deformation (restoration) when the load is released, and if the cushioning material is shoes or the like, bending deformation due to weight shift of the wearer and the like can be mentioned.

According to the ninth aspect of the present invention, in the shock-absorbing part attached in a horseshoe-shaped curved state, a wall thickness difference is provided between the horseshoe inner peripheral side and the horseshoe outer peripheral side in the casing (for example, the inner peripheral side is thinned). Because the wall thickness is given to the buffer part in advance by this thickness difference, for example, when the buffer part is bent to fit the receiving space at the time of assembly, it is easy to form this bend, and the assembly is improved. The horseshoe shape (curved state) can be maintained over a long period of time. Incidentally, in the extrusion molding, since the buffer part can be pushed out with such a thickness difference, the bending fold can be imparted to the buffer part from the manufacturing stage. At this time, if the bending wrinkle is still insufficient only by providing a difference in thickness, it may be wound up with the thinner thickness of the extruded product inside (cooling as appropriate), or the thinner thickness will be A desired bending wrinkle can be reliably imparted to the cushioning part by, for example, previously imparting an R that is to the inside to the mold (forming die).

According to the invention of claim 10 , when the shock absorbing part is attached in a horseshoe-shaped curved state, at least one of the horseshoe inner peripheral side or the horseshoe outer peripheral side is formed in a bellows shape. It can be crushed and resist shock without increasing resistance.
In addition, when only the inner side of the horseshoe is formed in a bellows shape, the shape of the outer side of the horseshoe that becomes the viewing surface can be maintained as it is while wearing the bellows shape while improving the shock absorption. , Can improve the design. Of course, the part to be formed in the bellows shape is not limited to the inner peripheral side of the horseshoe, but can also be on the outer peripheral side of the horseshoe. In addition, the time required for buffering can be shortened (which leads to control of the buffering characteristics).
It is also possible to provide a thickness difference between the inner side of the horseshoe and the outer side of the horseshoe while forming the casing in a bellows shape (for example, the thickness of the inner side of the horseshoe is made thinner than the outer side of the horseshoe) In this case, it is possible to obtain a cushioning part in consideration of easiness of crushing and visual observation (designability) while imparting bending wrinkles to the cushioning part.

According to the invention described in claim 11 , since the shock absorbing part is attached to the shock absorbing material in a state in which the external deformation of the super deformed vibration absorber at the end of the casing can be visually observed, high shock absorbing performance is provided to the user. It can appeal visually.
Incidentally, when the cushioning material to which the cushioning part is attached is a product such as shoes that can be picked up directly by the user at the time of purchase, the user usually presses the cushioning part part at the time of purchase to It is common to check the performance. Therefore, what can see directly the protrusion deformation | transformation of the super deformation | transformation vibration absorber directly linked to such a buffer performance exhibits high commercial value. Of course, if the projecting deformation of the super-deformation vibration absorber is not only visually visible, but can be directly touched by the user, the functionality of the product (or a product with high performance) can be further improved. It is possible to appeal to the user even more strongly.
Moreover, if such a shock absorbing part is attached to a shock-absorbing material such as shoes in a pair of left and right (in and out sides), it is possible to develop variations as a kind of balance indicator that shows how to apply the left and right loads.

Further, according to the invention of claim 12 , for example, the receiving space corresponding to the back side of the shock absorbing part at the time of mounting can be printed in advance, and this can be visually observed through the transparent shock absorbing part. In addition, it is possible to appeal the high cushioning performance of the cushioning material to the user.
In addition, since the super-deformable vibration absorber causes various deformations such as expansion, contraction, and bending, the super-deformation vibration absorber produces a kind of lens effect. It is possible to change the visual appearance (for example, enlargement, reduction, blurring, etc.). For this reason, it is possible to produce not only the appeal of high buffer performance but also the fun of design that the appearance changes.

Further, according to the invention described in claim 13 , for example, when a compressive load is applied, the character or the like applied to the contact surface of the shock-absorbing material can be lifted by utilizing the projecting deformation of the super-deformed vibration absorber. In addition to producing the fun of the design, it is possible to strongly appeal to the user the shock-absorbing parts and the high shock-absorbing performance of this.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention includes one described in the following examples, and further includes various methods that can be improved within the technical idea.

As shown in FIGS. 1 (a) and 1 (b), the shock-absorbing part 1 of the present invention is attached to footwear such as sports shoes, and is directly transmitted to a person (foot) wearing the shoes as it is. It absorbs and relaxes etc. In addition, in this specification, the footwear etc. with which the buffer part 1 is mounted are named generically, and the buffer material S is required.
The shock-absorbing part 1 of the present invention is used as a shock-absorbing material for such footwear, as well as an insulator incorporated as a vibration-proof material in a leg portion of a precision instrument, a protector for ball and martial arts (shock absorbing material), It can be applied as a seismic isolation material for heavy equipment, a cushioning material for portable equipment, various cushions, or a packing material such as a door in a refrigerator. That is, in such a case, an insulator (precision device), a protector, a weight device, a refrigerator (door), or the like to which the shock-absorbing part 1 is directly or indirectly attached becomes the shock-absorbing material S.

  Hereinafter, the buffer part 1 of the present invention will be described. As shown in FIG. 5 (a) as an example, the shock-absorbing part 1 of the present invention is accommodated in a cylindrical (tube-shaped) casing 2 whose both ends are open (opened) and can be flexed freely as a whole. The super-deformation vibration absorber 3 mainly acting as a shock absorbing function material is provided to absorb and relieve the compressive load (impact) applied to the shock absorbing material S and to remove the compressive load. In this case, the initial applied shape (no load state) is restored. The shock-absorbing part 1 of the present invention may be mounted on the shock-absorbing material S in a straight state as shown in FIG. 5A, or a horseshoe-shaped curve as shown in FIG. It may be attached to the cushioning material S (sports shoes) required in the state.

  Further, the shock absorbing part 1 includes a deformation permitting part structure 4 that allows a compressive load applied to the shock absorbing part 1 to escape as a bulging deformation of the super-deformable vibration absorber 3 in a direction substantially orthogonal thereto, and is compressed into the shock absorbing part 1. When a load is applied, the compressive load can be absorbed and relaxed by the bulging deformation in the deformation allowing portion structure 4, for example, the protruding deformation that causes the super-deformed vibration absorber 3 to bulge out from both ends of the opening of the casing 2. (It can be escaped). Of course, any excessive compressive load does not immediately cause the super-deformed vibration absorber 3 to bulge and deform, but bulge and deform when a certain or more compressive load is applied (the compressive load of It depends on how it is applied and on which part of the cushioning part 1 the compressive load acts).

In FIG. 5 (a), when the compressive load is applied, the central part of the cushioning part 1 is shown to be recessed. This indicates that the compressive load acts on the central part of the part intensively. Instead, it merely shows schematically that a load is applied to the cushioning part 1, and therefore, the side view shows a state (oval shape) that is flattened from the direction in which the load is applied. In general, when a compression load is applied to the cushioning part 1, the load is not necessarily uniform, but is generally applied as a whole.
In addition, the casing 2 and the super-deformed vibration absorber 3 are formed by fixing at least a part of the boundary surface thereof, so that when the compressive load is removed, the super-deformed vibration absorber 3 is returned to its original position, more in detail. The super-deformed vibration absorber 3 is returned to the initial position with respect to the casing 2.
In addition, although the specific physical property value etc. are described in detail later about the super deformation | transformation vibration absorber 3, this itself is very soft and has a big elongation rate, for example, a two-fold state (so-called completely collapsed state) "Super" is added to restore without tearing even if it is bent.
Incidentally, the elongation rate described in this specification for the super deformed vibration absorber 3 is a numerical value measured in accordance with JIS K6251 (vulcanized rubber and thermoplastic rubber-how to obtain tensile properties). A sample having a predetermined shape of the mold (dumbbell No. 3 is used in the present application) is pulled with a tensile tester, and the extent to which the sample has been stretched is determined.

Hereinafter, the casing 2 and the super-deformed vibration absorber 3 will be described in more detail.
As an example, the casing 2 uses TPU (thermoplastic polyurethane elastomer) or acrylic elastomer manufactured by BASF, which is a highly transparent and low hardness material. In this case, since the shock absorbing part 1 is manufactured, it is assumed that the super deformed vibration absorber 3 and the casing 2 are formed by “simultaneous extrusion molding” in which the super deformed vibration absorber 3 and the casing 2 are simultaneously extruded in a molten state. It is a preferable material in that the difference in hardness from the body 3 can be reduced and the simultaneous extrusion molding can be easily performed.
Incidentally, when the casing 2 is formed by a single tube (for example, a cylinder) and this is applied to the buffer part 1, for example, the outer diameter (outermost diameter) of the casing 2 is about 10 to 13 mm and is thick. (Outer skin thickness) is about 0.5 to 1.0 mm. Also, the casing 2 is formed by a continuous body in which several tubes are connected in parallel, and the casing 2 is formed as a buffer part (if it is desired to distinguish this from the single buffer part 1 as a “continuous type buffer part” 1A "), for example, the continuous width is about 30 to 40 mm, the height of the continuous body (buffer part 1A) is about 6 to 8 mm, and the wall thickness (outer skin thickness) of the casing 2 is The thickness is about 0.2 to 0.5 mm (the thickness of the continuous type buffer part 1A is thinner).

On the other hand, the super-deformed vibration absorber 3 has a higher elongation than the casing 2, and for example, an elongation of 500% or more, preferably 1000% or more is desirable, and Asker C hardness is 0-60. A gel-like polyethylene (olefin) -based elastomer or styrene-based elastomer material is used. An example of such a material is styrene-based elastomer gel manufactured by Riken Technos Co., Ltd.
Further, as described above, at least a part of the boundary surface between the casing 2 and the super-deformed vibration absorber 3 is fixed. However, when the buffer part 1 is manufactured by simultaneous extrusion molding, the boundary surface is naturally formed by this molding. Is fixed.
Of course, it is also possible to obtain the cushioning part 1 by a manufacturing method other than extrusion molding. In that case, it is not always necessary to fix all the boundary surfaces, and in part, more specifically, the end of the casing 2 ( It is preferable to fix a portion adjacent to the deformation allowing portion structure 4. The purpose is to restore the super-deformed vibration absorber 3 to the initial position without fail, the purpose of preventing the super-deformed vibration absorber 3 from moving (displacement) with respect to the casing 2, the prevention of contamination from the boundary surface, and the strength as the shock-absorbing part 1. This is due to the purpose of maintaining

As described above, since the super-deformed vibration absorber 3 is fixed to the casing 2, the boundary surfaces thereof are in close contact and do not always move. Therefore, even if the shock absorbing part 1 is deformed (collapsed) due to a compressive load. ), While the original position is fixed, for example, the boundary surface causes the projecting deformation so that only the end of the super-deformed vibration absorber 3 extends in the axial direction.
Note that the bulging deformation of the super-deformation vibration absorber 3 in the deformation-permitting structure 4 includes deformation that does not necessarily protrude from the end of the casing 2 (deformation that does not protrude). That is, for example, as shown in FIG. 5 (b), when both ends of the super-deformed vibration absorber 3 are formed in a recessed state from the beginning, the super-deformed vibration absorber 3 is moved outward by receiving a compressive load. even cause bulging deformation, only the deformation in a state to compensate for the first recess state (only a state that causes I because if embedded), the appearance superdeformed vibration absorbing member 3 of the casing 2 ends It presents a state as if nothing protruded from the part to the outside.

Therefore, “the outward deformation of the super-deformed vibration absorber 3 at the end of the casing 2” in this specification means that the super-deformed vibration absorber 3 clearly protrudes from the end of the casing 2 to the outside. "Deformation" (literally projecting deformation that has a convex shape to the outside), as well as bulging deformation, the first concave state becomes almost flat, and apparently nothing appears to protrude from the end of the casing 2 "non-protruding deformation""Is also included.
Furthermore, “bulging deformation of the super-deformable vibration absorber 3 in the deformation-permitting portion structure 4” or “bulge deformation of the super-deformable vibration absorber 3 in a direction substantially orthogonal to the compressive load” in this specification refers to the end of the casing 2. This includes not only the bulging deformation (the above-mentioned “protruding deformation” and “non-protruding deformation”) but also the bulging deformation of the super-deformed vibration absorber 3 in the casing 2. That is, for example, as shown in FIG. 5 (c), a portion where the super-deformed vibration absorber 3 does not exist is formed inside the casing 2 (this is referred to as a free space 11). An air passage 12 such as a small hole is formed in the free space 11, and the bulge deformation of the super-deformed vibration absorber 3 is performed in the free space 11. Incidentally, the air passage 12 is configured to smoothly perform the bulge deformation and restoration of the super-deformed vibration absorber 3 in the casing 2. Therefore, when the air passage 12 is formed, the side periphery of the casing 2 is formed. It is preferable to form a plurality on the surface at equal intervals (for example, in FIG.
In order to form the free space 11 at the time of extrusion molding, it can be formed by temporarily stopping only the supply of molten resin (feeding to the mold) of the super-deformed vibration absorber 3. .
Incidentally, as shown in FIG. 5 (b), both ends of the super-deformed vibration absorber 3 do not protrude outwardly from the end of the casing 2 even when subjected to a compressive load. For example, when either one of both ends protrudes to the outside, an embodiment of the present invention is provided.

Next, a further modification of the deformation-permitting portion structure 4 as described above, particularly when the end portion of the casing 2 is the deformation-permissible portion structure 4, that is, the super-deformation vibration absorber 3 is moved outward at the end portion of the casing 2. Variations in the case of projecting and deforming will be further described.
First, in the embodiment shown in FIG. 5 (a), both ends of the cushioning part 1 (casing 2) are both cut substantially perpendicular to the axial direction so as to have the same opening area (cross-sectional area of the opening). Formed. Therefore, in this case, if the compressive load is applied evenly to the shock absorbing part 1, the projecting deformation of the super-deformed vibration absorber 3 due to the compressive load is similarly generated on both sides, and the impact (compressive load) is also applied to both sides of the shock absorbing part 1. It will escape almost equally.

  For this reason, it is conceivable to control how the shock is released by making the areas of the openings at both ends of the cushioning part 1 different. More specifically, it seems that a control method that allows a lot of impact to escape is possible on the end portion side having a large opening area. That is, for example, FIGS. 6A and 6B both show only one end side of the casing 2 in an open state (the other end is sealed or closed). In this case, the super-deformed vibration absorber 3 is used. Since the protruding deformation of only occurs at the opening end only, the compression load (impact) acting on the buffer part 1 is unilaterally released only to the opening side, which can be said to be a control method for specifying the buffering direction.

  FIG. 6C shows a case where the casing 2 itself is formed in a tapered shape. In this case, coupled with the shape of the taper, the projecting deformation of the super-deformed vibration absorber 3 is caused by the end portion having a larger opening area. However, it is much more likely to occur, so that much of the compressive load can be released in that direction. Of course, when the compressive load applied to the shock absorbing part 1 always acts in the same state depending on conditions such as how to apply the compressive load and the mounting location, the difference in the opening area at both ends of the shock absorbing part 1 is carefully adjusted. By this, it can be intended even to what extent the compression load is released to which end.

FIG. 6D shows a case in which a small hole 13 is opened on the side peripheral surface in the vicinity of the closed end portion of the casing 2 having only one end opened (the state shown in FIG. 6B). In this embodiment, when a load is applied, the super-deformed vibration absorber 3 protrudes from the small hole 13 to the outside. In this case, since the opening area on the opening end portion side is large as compared with both ends, the super-deformed vibration absorber 3 protrudes at the end portion, and a large amount of load can be released to the end portion.
FIG. 6 (e) shows a case where a small hole 13 is formed in the closed end of the casing 2 (the state shown in FIG. 6 (b)) opened at only one end. Since deformation tends to occur on the opening end side, the compression load can be largely released to the end side. In addition, this Example considers extrusion molding, and in a cutting process (end portion cutting) for cutting a long extruded member into an appropriate length, if cutting is performed once in a crushing manner, twice. Thus, the cushioning part 1 of the present embodiment having the small holes 13 at the end portions can be obtained (the small holes 13 can also be formed at a time at the time of extrusion molding).
FIG. 6F shows a case where a small hole 13 is formed in the vicinity of one opening end while opening both ends of the casing 2 substantially perpendicularly to the axial direction (the state shown in FIG. 5A). . In this case, since the opening area on the end portion side where the small hole 13 is formed becomes large, the compressive load can be largely relieved to the end portion side.

In FIG. 6G, both ends of the cushioning part 1 (casing 2) are opened, while one end is cut almost perpendicularly to the axial direction and the other end is cut obliquely. Thus, this is an example in which the opening areas of both are made different. In this case, since the obliquely cut end portion has a larger opening area, the projecting deformation of the super-deformed vibration absorber 3 is also likely to occur at the end portion, and the compressive load can be greatly released to the end portion side. is there. Incidentally, this embodiment also considers extrusion molding, and if the inclined cutting is performed once in the cutting process (end cutting), such a buffer part 1 can be formed at a time at the time of extrusion molding. Is.
In addition, when such an inclined cut is performed at the same inclination angle in all cutting steps, for example, as shown in FIG. 6 (h), the parallelogram-shaped cushioning part 1 is obtained as viewed from the side surface. In addition, when the tilt cut is performed by alternately changing the tilt angle for each cutting step, for example, as shown in FIG. 6 (i), the trapezoidal (isosceles trapezoidal) cushioning part as seen from the side. 1 is obtained (however, in FIGS. 6 (h) and (i), since the opening areas at both ends are the same), there is no idea that more load is released to either end).

  Further, FIG. 6 (j) shows the shock absorbing part 1 in which the shape of both ends of the opening is formed into a corrugated shape, that is, the shock absorbing part 1 when the cutting process is performed with a fine corrugated cutter (blade). Although the area is almost the same, the end (cut) of the super-deformed vibration absorber 3 has a corrugated shape, so the way it swells when it is cut flat (the state in Fig. 5 (a) above), and the buffer characteristics are different. Is presumed to be obtained. For this reason, the cushioning part 1 in FIG. 6 (j) is not an example in which a large amount of compressive load is released to one of the opening ends, but is an embodiment in the sense that the cushioning characteristics can be changed as compared with a straight cut. . However, although this embodiment will be described in detail later, the printing material P is preliminarily printed on the shock-absorbing material S (particularly, a contact surface 39 described later), and the printing P In the case where the appearance is visually observed, it can be considered that it is useful in that it can produce a different appearance and enjoy the fun of changing the marking.

  Next, various modifications mainly relating to the overall configuration of the shock-absorbing part 1 will be described. Although the shock absorbing part 1 has been mentioned a little in the above description, for example, as shown in FIG. 7 (a), the casing 2 is formed by a single tube as a matter of course, for example, in FIGS. 7 (b) to (f). As shown, the casing 2 may be formed by connecting several tubes in parallel (continuous type buffer part 1A), and in the case of a continuous type buffer part 1A, it becomes an outer shell. There may or may not be a boundary wall surface between the casings 2 (this is referred to as a partition wall 16). In FIG. 7, (b) and (d) are buffer parts 1 </ b> A having a partition wall 16, and (e) and (f) are buffer parts 1 </ b> A having no partition wall 16.

  Note that such a continuous-type cushioning part 1A is suitable when the part to which the cushioning function is desired is a surface (area). That is, in the buffer part 1 in which the casing 2 is formed by a single tube, when a predetermined area is provided with a buffer function, for example, as shown in FIG. However, this has to take into account the combination and arrangement, etc., and it takes time and effort to install and install. In such a case, if the continuum type buffer part 1A is used, it is not necessary to consider such a combination, and the installation can be easily performed.

  In particular, the continuous-type buffer part 1A without the partition wall 16 can obtain high buffer performance. This is because, for example, in the cushioning part 1 of a single tube, the outward deformation of the super-deformed vibration absorber 3 that greatly contributes to shock absorption is performed only in the axial direction (this is because the partition 16 The same applies to a certain continuous body type shock absorbing part 1A), and a continuous body type shock absorbing part 1A having no partition wall 16 has a high degree of freedom of deformation of the super-deformed vibration absorber 3 in the casing 2 and is not necessarily limited to the axial direction. Even if it finally appears as an overall outward bulging deformation, until then, inside the casing 2, the super-deformation vibration absorber 3 is not only in the axial direction but also in the lateral direction perpendicular thereto. Since it can be deformed, the degree of freedom of deformation of the super-deformable vibration absorber 3 that is directly connected to the buffer function is increased, and as a result, the buffer performance is enhanced, and it is considered that many shocks can be absorbed quickly.

Of course, in the buffer type 1A of the continuous body type without the partition wall 16, if the wall thickness of the casing 2 is made thinner than the buffer type part 1 of the single unit type (for example, about 0.2 mm, which is the molding limit), the buffer part 1A Further, it is possible to have a high buffering performance.
Incidentally, even if the continuous type buffer part 1A without the partition wall 16 is formed by general extrusion molding, the properties of the super-deformed vibration absorber 3, the thickness of the casing 2 is thin, and the partition wall 16 is not present. Therefore, it can be flexed sufficiently in three dimensions, so it is suitable for protecting such a joint part by fitting it to a human body, particularly a joint part that repeats complicated movements such as elbows and knees. Conceivable.

Further, when the casing 2 is formed of a transparent or translucent transparent material, for example, as shown in FIG. 8, the super-deformed vibration absorber 3 includes two or more transparent or translucent transparent materials having different refractive indexes. This is a preferred embodiment when the shock-absorbing part 1 is visually visible in a state where it is mounted on the shock-absorbing material S. That is, since the shock absorbing part 1 undergoes various deformations such as crushing when receiving a compressive load and returning when the compressive load is removed, the super-deformed vibration absorber 3 has two or more types of transmission having different refractive indexes. If it is made of a material, the boundary surface between the super-deformed absorbers 3 changes its appearance (for example, shines brightly) due to light addition (refraction, reflection, etc.) during such deformation. This looks like a kind of design fun. Of course, when the shock-absorbing part 1 is mounted on sports shoes or the like, the shock-absorbing part 1 bends due to the weight shift of the wearer. It's what you do.
In addition, when the super deformation | transformation vibration absorber 3 is formed with 2 or more types of permeation | transmission materials from which a refractive index differs, as a accommodation form in the casing 2, as shown to FIG. 8 (a), (b), for example, the center of a cross section As shown in FIG. 8 (c), one super-deformed vibration absorber 3 is circular, while the other two super-deformed vibration absorbers 3 are alternately arranged so as to be equally divided from each other. Can be housed in completely different shapes, such as a crescent shape covering this.

Further, the cross-section of the shock-absorbing part 1 (casing 2) is not necessarily limited to a circle, and may be an oval shape or a rectangular shape. In addition, for example, as shown in FIG. It is also possible. This is intended to cause the shock absorbing part 1 to be crushed in a straight line without resisting the compressive load when the shock absorbing part 1 receives a compressive load. It can be said that this embodiment is suitable when it is desired to exert the above directly. In addition, in this figure, the bellows cross section which receives a compressive load from an up-down direction and is easy to be crushed in this direction is shown in figure.
Further, even when the casing 2 has a circular cross section, for example, as shown in FIG. 9B, a partition wall 17 that divides the inside (cross section) into two equal parts is formed. It is also possible to accommodate different super-deformed vibration absorbers 3 in the space. In addition, since the present embodiment has the partition wall 17, it is difficult to be crushed in the forming direction (lateral direction), and thus resists compression from the lateral direction in shape. Only the collapse of the direction is allowed, and in this respect, it can be said that the structure is similar to that shown in FIG.

  Further, the thickness of the casing 2 is not necessarily constant in the same cross section. For example, as shown in FIG. 9C, the thickness in the same cross section can be varied. On the other hand, an embodiment in which the super-deformed vibration absorber 3 is housed in an eccentric state and the wall thickness is gradually changed is shown. The present embodiment is suitable, for example, when the shock-absorbing part 1 is installed in a horseshoe-shaped curved state. For example, during extrusion molding, the thinner one is the inner side (the thicker one is the outer side). If the molded product (buffer part 1) is wound up (cooling can be performed as appropriate), it is easy to bend the buffer part 1 in the extrusion process, and it is easy to assemble the buffer material S. Can maintain the curved state after assembly for a long time.

Moreover, as the buffer part 1, for example, as shown in FIG. 9 (d), the cross-sectional shape of the casing 2 and the super-deformed vibration absorber 3 can be formed in a C shape or a U shape as a whole. Yes, this is to make it possible to absorb the impact (compressive load from the vertical direction) applied to the shock-absorbing part 1 even in the cross-sectional shape of the shock-absorbing part 1. That is, in this embodiment, in addition to the properties (softness, high elongation, etc.) of the super-deformed vibration absorber 3 and the bulging deformation of the super-deformed vibration absorber 3 in the axial direction, the shock-absorbing part 1 itself performs a cross-sectional elastic deflection. Thus, the buffer part 1 as a whole is intended to exhibit higher buffer performance.
Further, as another embodiment capable of absorbing the shock applied to the shock absorbing part 1 even in the cross section of the shock absorbing part 1, for example, as shown in FIG. 9 (e), the thick portion of the casing 2 is double concentric. In another embodiment, the super-deformed vibration absorber 3 is accommodated between the double concentric circles. In the case of the present embodiment, since the most central part of the cushioning part 1 is formed in a hollow shape (hereinafter referred to as the cavity part 18), when a compressive load is applied, the cushioning part 1 (the innermost circumference of the casing 2). Part) can be elastically bent toward the cavity 18 side, and this can also absorb the impact.

Further, as the shock absorbing part 1, for example, as shown in FIG. 9 (f), a substantially semicircular cross section is possible. In this case, both the casing 2 and the super-deformed vibration absorber 3 are waved inside the flat surface. It is preferable to form a continuous wave pattern or zigzag (sawtooth). In the buffer part 1 having such a cross-sectional shape, the flat surface (outer side) is used as an adhesive surface to the buffer material S required, such as adhesive AD applied to the outer surface of the flat surface. This is because there are many. That is, with such a cushioning part 1, even if the casing 2 and the super-deformed vibration absorber 3 are transparent or translucent materials, the adhesive AD applied to the flat surface is visually observed (transmitted) through the cushioning part 1. ) And can maintain a good visual. More specifically, by forming the inside of the flat surface of the shock-absorbing part 1 in a wave pattern or zigzag shape, the light is refracted as shown by the broken line in the figure, so that direct see-through of the adhesive AD can be suppressed. It is. In other words, for example, as shown in FIG. (F ′), when the inside of the flat surface of the cushioning part 1 is kept flat, the adhesive AD applied to the outside of the flat surface passes through the cushioning part 1. Since the appearance is easily visible (see the broken line in the figure), there is a concern that the design appearance as the shock-absorbing material S may be significantly reduced.
In addition, such a form (structure which forms the inside of a to-be-adhered surface in a wave pattern shape or a zigzag shape) is not limited to the buffer part 1 of a single tube single-piece | unit, but is a continuous body type buffer part 1A. In particular, the above (d), (f), etc. in FIG. 7 are also extremely effective forms (configurations) when it is desired to improve the appearance.
Incidentally, from the viewpoint of light refraction, it may be more preferable to form the inside of the adherend surface in a zigzag shape than in a wave shape. Therefore, in the actual manufacturing stage (extrusion molding), the minimum R is inevitably formed at the zigzag tip, so that the wave pattern is considered realistic.

Further, the shock absorbing part 1 does not necessarily require that the inside of the casing 2 is filled with all of the super-deformed vibration absorbers 3. For example, as shown in FIG. It is also possible to form a section and accommodate the super deformed vibration absorber 3 by limiting to one section. In this embodiment, a continuous buffer part 1A having a partition wall 16 in which two casings 2 having a circular cross section are arranged in parallel is shown, and one of these spaces (casing 2) is superdeformed. The Example which accommodated the absorber 3 is shown. For example, as shown in FIG. 10B, a partition wall 17 is formed so as to divide the inside of the casing 2 having a circular cross section into two equal parts to the left and right, and only one of the spaces (partitions) has super-deformed vibration absorption. It is also possible to accommodate the body 3.
In the embodiment shown in FIG. 10, the space where the super-deformed vibration absorber 3 is not accommodated may be left open at both ends (the state where air freely enters and exits the unfilled section), and both ends are sealed. It can also be used as an air cushion. Incidentally, FIG. 9E also corresponds to an embodiment in which the super-deformed vibration absorber 3 is not completely filled in the casing 2. Moreover, in such an Example, while the super deformation | transformation vibration absorber 3 accommodated in the casing 2 is made small, the point which can obtain the external appearance which is not different from a full filling in design, or the cushioning material S of shoes etc. is required. This is effective in that the weight can be reduced (the idea of visualizing the appearance of the shock-absorbing part 1 will be described later).

Next, the attachment situation (installation mode) in the case of mounting the cushioning part 1 of the present invention on the cushioning material S such as sports shoes will be described.
When the shock absorbing part 1 is mounted on the shock absorbing material S such as sports shoes, the shock absorbing part 1 manufactured in a straight shape (extruded) may be mounted in the straight state as it is, but the compression load (impact) Depending on the size and how it is applied, it is often mounted in a horseshoe-shaped or U-shaped (C-shaped) curved state as viewed from the direction (plane) in which the compressive load acts. In particular, in the case of sports shoes, a large load (impact) is applied to the wearer's buttocks at the time of landing. For example, as shown in FIG. 2, the shock-absorbing part 1 is attached in a horseshoe-shaped curved state at the buttocks. It is preferable to receive the compressive load in as wide an area as possible. When mounting the cushioning part 1 in a horseshoe-shaped curved state, as described above, the cushioning part 1 formed straight may be bent for the first time when assembled. It is preferable to bend the buffer part 1 in advance at the time of molding (in the manufacturing stage).

Of course, the shock-absorbing part 1 may be mounted alone as shown in FIGS. 1 and 2, but for example, as shown in FIG. 3, several shock-absorbing parts 1 are bent in a straight or horseshoe-shaped state. It is also possible to install in combination.
In sports shoes, etc., it may be desired to set in which direction the impact applied to the buttocks will be released depending on the target sports. For example, in the case of running shoes, while absorbing and mitigating the impact on the buttocks, this can be linked to the subsequent kicking action (so that the wearer can move to the next kicking action smoothly). It is considered to release the load applied to the toe side (toe side).

Hereinafter, various installation modes of the buffer part 1 will be described in detail.
First, in the embodiment shown in FIG. 11 (a), a tapered cushioning part 1 is mounted on a sports shoe (buffer material S required) in a straight state. This is an embodiment in which the wide open end portion is directed and the small diameter portion (the narrow open end portion) of the cushioning part 1 is directed outward. In the present embodiment, the shock absorbing part 1 that has received a compressive load is easily crushed to the in side, so that the shock absorbing characteristic that greatly releases the shock applied to the collar portion to the in side is intended. In this embodiment, for example, by setting the opening area (ratio) at each end of the shock-absorbing part 1, it is possible to set generally which ratio the impact is released to which end.
In the embodiment shown in FIG. 11B, two tapered cushioning parts 1 are mounted in a straight state, and another cushioning part 1 is attached to the state shown in FIG. The large diameter portion is attached to the side (toe side) and the small diameter portion is directed to the heel side. In the present embodiment, each shock absorbing part 1 that has received a compressive load is easily crushed to the in side and the toe side, so that the shock absorbing characteristic that releases the impact applied to the collar portion to the in side and the toe side is intended.

In the embodiment shown in FIG. 11C, the tapered cushioning part 1 is curvedly installed in a horseshoe shape so as to follow the outer periphery of the heel of the shoe. That is, in this example, the wide end portion side is positioned on the in side and the narrow end portion side is positioned on the out side while both opening end portions are directed to the toe side. In this embodiment, since the in side and the out side are compared with each other, they are easily crushed to the in side. Therefore, as in FIG. However, in this embodiment, since both open end portions of the shock-absorbing part 1 are directed to the toe side, the impact is considered to escape somewhat to the toe side.
The embodiment shown in FIG. 11 (d) also has a tapered shock-absorbing part 1 mounted in a horseshoe shape, but generally has a wide end on the toe side with both opening ends facing in. This is an embodiment in which the portion side is positioned and the narrow end portion side is positioned on the heel side. In the present embodiment, the toe side and the heel side are easily crushed to the toe side, and therefore, a buffering characteristic that releases the compressive load applied to the heel portion mainly to the toe side is obtained. However, in the present embodiment, since both open end portions of the cushioning part 1 are directed to the in side, the impact is considered to escape somewhat to the in side.

  Further, when the cushioning part 1 is installed along the outer periphery of the buttock as shown in FIG. 11C, for example, as shown in FIG. Alternatively, the buffer part 1 may be installed (adhered) so as to be exposed along the outer periphery of the flange as shown in FIG. In addition, this figure (e), (f) also intends to give an impression (appeal) to the user that the shock absorbing part 1 or the sports shoes (shock required material S) is excellent in shock absorbing performance. However, in this figure (f), since the user can clearly see the projecting deformation of the super-deformed vibration absorber 3 (because it can be felt), the user has a stronger shock absorbing performance. It can be appealed. In addition, in this figure (e), although the both ends (super deformation | transformation vibration-absorbing body 3) of the buffer part 1 embedded in the sole 30 was illustrated in the installation form which showed free deformation, this is the buffering characteristic intended. Only one of them may be used.

  In addition, when emphasizing that a large impact is applied to the buttocks, for example, as shown in FIGS. 11 (g) and 11 (h), a continuum type cushioning part 1A is embedded at substantially the center of the buttocks. It is also possible to install them, or, as shown in FIG. 6 (i), it is possible to install a combination of a continuous type buffer part 1A and a horseshoe-shaped buffer part 1 (single unit). Here too, an installation form in which the end portions (super-deformed vibration absorber 3) of the shock absorbing parts 1 and 1A can freely project and deform is shown as an example (only one may be used depending on the intended shock absorbing characteristics).

Here, the difference between the installation modes of FIGS. 11G and 11H will be schematically described from the viewpoint of the target sport. For example, in the case of a sport where emphasis is mainly on running, such as running, the wearer's movement (climbing) must first land outside the buttocks. Touching the entire foot, kicking the toes from the ball, kicking from the shocking stroke when landing, cushioning and kicking when touching the foot, touching the entire foot For example, the installation as shown in FIG. 11G is suitable because repulsion of the toe portion is required at the time of taking out.
On the other hand, generally in ball games using the court, such as basketball, handball, volleyball, tennis, badminton, table tennis, soccer, rugby, etc.・ Installation as shown in FIG. 11 (h) is suitable because shear stress such as compression is applied.

Further, when the shock absorbing part 1 is mounted in a horseshoe-shaped curved state, as shown in FIG. 1C, for example, the thickness (t _{1 in the} figure) of the casing 2 on the inner side of the horseshoe is set to the outer side of the horseshoe. It can be formed thinner than the wall thickness (t _{2 in the} figure), and this is effective in that it is easy to impart bending wrinkles at the time of mounting to the buffer part 1 from its cross-sectional shape. That is, from the stage of manufacturing the cushioning part 1 (casing 2), by manufacturing (extruding) with such a thickness difference, the bending part is given to the buffering part 1 (extruded product) from the manufacturing stage. Is something that can be done.
Of course, in addition to the extrusion molding method with a difference in wall thickness, the extruded product molded in such a state can be wound with the thinner wall inside (it can be cooled appropriately) A desired bending wrinkle can be reliably imparted to the shock-absorbing part 1 by, for example, previously imparting a radius that makes the thinner one inward to the mold (forming die). Further, by attaching a bending rod to the shock-absorbing part 1 before assembling, the assembling workability of the shock-absorbing part 1 and the durability of the mounting state are improved.

Further, when the shock absorbing part 1 is installed in a horseshoe shape, for example, as shown in FIG. 1 (d), both the inner side of the horseshoe and the outer side of the horseshoe are formed in a bellows shape, and the casing 2 ( It is possible for the cushioning part 1) to collapse without almost resisting the load direction. As described above, this is suitable when it is desired to directly exhibit the high shock absorbing performance of the super-deformed vibration absorber 3 itself.
On the other hand, FIG. 1 (e) is an embodiment in which only the inner side of the horseshoe of the cushioning part 1 is formed in a bellows shape, and the outer side of the horseshoe is formed in an arc shape. This allows the inner side of the horseshoe to be easily crushed by a compressive load, that is, the high shock-absorbing performance of the super-deformed vibration absorber 3 is quickly exhibited, while the outer side of the horseshoe looks visually when worn on sports shoes or the like. The improvement is taken into consideration. FIG. 1 (f) is an embodiment in which only the outer side of the horseshoe of the cushioning part 1 is formed in a bellows shape (the inner side of the horseshoe is formed in an arc shape), and the super deformed vibration absorber 3 is higher on the outer side of the horseshoe. It is intended to quickly exhibit the buffer performance.

In addition, as described above, the cushioning part 1 can visually appeal to the user the high cushioning performance of the commercial value, that is, the cushioning material S required, by daringly showing a part of the cushioning part 1 in the mounted state. Since it is preferable also as a product form, hereinafter, an installation state (installation mode) assuming such an external visual observation will be described.
For example, in the case of sports shoes, the sole 30 to which the cushioning part 1 is attached is formed by joining a plurality of members in a laminated state as shown in FIGS. 1 (a) and 2 (a). An outer sole 31, a midsole 32, and an inner sole 33 are designated from the positioned ones. Further, the midsole 32 is formed by laminating an outer base 32a, a mid base 32b, and an inner base 32c from below, and the cushioning part 1 is assembled, for example, between the outer base 32a and the mid base 32b. More specifically, a groove-shaped receiving space 36 is formed in the outer base 32a, and the buffer part 1 is attached so as to be accommodated therein. In addition, as shown in FIGS. 2B to 2D, for example, the outer base 32a is partially formed with a notch-shaped dew portion 37, and at least a part of the shock-absorbing part 1 after mounting is visually observed. However, the exposed portion 37 is not necessarily formed in a notch shape, and may be formed of a transparent or translucent material, that is, a transparent (lens-shaped) solid member.

For this reason, the cushioning part 1 (casing 2) is printed with an appropriate pattern, pattern, marking, color, etc. on its surface in advance as shown in FIG. From the part 37, it is possible to make this print P visually visible. This is effective in that the presence of the buffer part 1 can be more appealing to the user with this print P than when the buffer part 1 without the print P is visually observed. Of course, the printing P itself also contributes to improving the design of the shoe (see FIGS. 1A and 1B).
When the casing 2 and the super-deformed vibration absorber 3 are formed of a transparent or translucent material, for example, as shown in FIGS. 12B and 12C, a shock-absorbing material in which the shock-absorbing parts 1 and 1A are incorporated is shown. It is possible to print P on the back surface of S (the receiving space 36) or the back side of the casing 2 in advance, and to make the appearance visually visible from the exposed portion 37 through the casing 2 and the super-deformed vibration absorber 3. is there. In this case, not only the print P can be seen through, but if the super-deformation vibration absorber 3 is formed in a convex lens-shaped cross section, it is possible for an external person to visually recognize the print P in an enlarged state. In addition, since the shock-absorbing part 1 is deformed variously when a compressive load is applied or when the load is removed, the thickness of the super-deformable vibration absorber 3 changes each time, and the undeformed state and deformation without load. In the state, it is possible to produce a design-like fun that the appearance of the print P changes. Incidentally, such a difference in appearance of the print P when visually observing the appearance can further emphasize the presence of the buffer part 1 and give an impact to the user.

Further, the technical idea of visually observing the print P is, for example, also when the super deformed vibration absorber 3 is filled only in a part of the casing 2 as shown in FIGS. 12 (d) and 12 (e). Applicable. Here, an embodiment is shown in which printing P is applied to the outer surface (back side) of the casing 2 on the non-filling side, and this is visually observed from the opposite side through the casing 2 in which the super-deformed vibration absorber 3 is accommodated. .
FIGS. 12 (f) and 12 (g) are examples in which the continuum type buffer part 1 </ b> A is prepared in the heel part of the shoe, and the print P can be visually observed from the shoe bottom side. is there. That is, FIGS. 12 (a) to 12 (e) are examples in which the appearance of the print P is mainly viewed from the side peripheral surface of the shoe, whereas in FIGS. 12 (f) and 12 (g). This is an embodiment in which the print P can be seen from an outsider who is located behind the shoe separated from the ground by kicking, for example.
In the present embodiments (f) and (g), a space is formed between the print P and the shock absorbing part 1A. This is a clearance when the shock absorbing part 1A is deformed by a compressive load (impact) ( However, the buffer part 1A is in close contact with the printing surface, so that the appearance of the printing P can be made different. This space also contributes to the weighing of shoes. In the figure, reference numeral 19 denotes a permeable holding member that receives the cushioning part 1 from below, and is formed of, for example, TPU (thermoplastic polyurethane elastomer).

Further, the present invention, when applied compression load to the buffer part 1, because at the end of Ke pacing 2 Superdeformed vibration absorbing member 3 a significant feature that it has to be projected deformation, Superdeformed vibration absorbing member 3 Even when the protrusion deformation is visually observed, the fact that the cushioning part 1 is incorporated into the user, that is, the high cushioning function of the product (the cushioning material S required) can be more strongly appealed. In this case, for example, as shown in FIG. 13 (a), the cushioning material S required for shoes or the like has a sufficient space in which the super-deformed vibration absorber 3 projects and deforms at the end of the receiving space 36 to which the cushioning part 1 is attached. This is referred to as a deformable space 38), and the buffer material S is provided with a dew portion 37 for visual observation of the protruding deformation. In addition, when the exposed portion 37 is formed in a notch shape so that the user can directly touch the superdeformed vibration absorber 3 that has been deformed in a projecting manner, the shock-absorbing part 1 can also be sensed (feeled) tactilely. It is possible to make the user more strongly appealing to the user with a high buffering property (product function) (can give the user a stronger impact).

In addition, when the dew portion 37 is not formed in a notch shape but is formed of a transmissive material (solid member), dust, dust, or the like does not adhere to the super-deformed vibration absorber 3, particularly an end portion that protrudes and deforms. It is considered suitable for use in
Of course, it is also possible to visually observe the appearance of the protrusion deformation of the super-deformed vibration absorber 3 and at the same time the print P applied to the surface of the cushioning part 1 and the inner part thereof. Performance can be appealed more intensely.
The above-described embodiment that can freely project and deform the end portion of the super-deformable vibration absorber 3 not only restricts the projecting deformation of the super-deformable vibration absorber 3 in addition to such an advantage in appearance. It has a buffering characteristic (functional feature) that can quickly buffer the compressive load applied to.

  Further, in the above-described embodiment in which the projecting deformation of the super-deformed vibration absorber 3 is freely performed, as shown in FIG. 13B, for example, the projecting deformation of the super-deformed vibration absorber 3 can be prevented on the way. . This is formed so as to contact the shock-absorbing material S (receiving space 36) when the super-deformed vibration absorber 3 protrudes and deforms (this is referred to as a contact surface 39), and the super-deformation after contact is made. The protruding deformation of the vibration absorber 3 is restricted, and the following buffering characteristics can be obtained. That is, the above-described method for preventing the projecting deformation of the super-deformation vibration absorber 3 in the middle assists the restoration (return) of the shock-absorbing part 1 when the compressive load is removed, or immediately changes the applied impact to a repulsive force, It can be used for the next exercise (operation). For example, if it is a sports shoe, it is considered suitable for the case where it is used for the next kicking out operation while absorbing the impact at the time of landing. .

Further, in the above-described embodiment in which the super-deformed vibration absorber 3 protruding and deformed from the end portion of the casing 2 is brought into contact with the contact surface 39, by performing appropriate printing P on the contact surface 39 in advance, At the time of contact, the print P can be visually observed.
Here, the basic structure in the case where the appearance of the print P is visually observed for the first time when the super-deformed vibration absorber 3 is projected and deformed to come into contact (contact) with the buffer material S will be described with reference to FIG. In this figure, the super-deformation vibration absorber 3 is formed of a transparent or translucent material, and an appropriate print P (here, the contact surface 39 that contacts when the cushioning part 1 protrudes and deforms). A sign (character) “GEL” is given. In addition, when there is no load, the cushioning part 1 is placed somewhat apart from the contact surface 39 (printing surface), and in this separated state, the print P cannot be seen through the cushioning part 1 (super-deformed vibration absorber 3). To do. From such a state, when the compression load is applied to the shock absorbing part 1 and the super deformation vibration absorber 3 protrudes and contacts the contact surface 39, the print P applied to the contact surface 39 is transferred to the super deformation vibration absorber 3. It is something that can be seen for the first time through. In addition, although the situation where the printing P floats from the axial direction of the super deformation vibration absorber 3 is illustrated here, the viewing direction is not necessarily limited to the axial direction of the super deformation vibration absorber 3.

Then, the printing applied to the shoes (the shock absorbing material S) using such protruding deformation of the super-deformed vibration absorber 3 and contact with the contact surface 39 (hereinafter referred to as “protruding deformation / contact”). FIG. 13 (b) shows an example in which the appearance of P is visually observed. In this figure, the cushioning part 1 is installed in a horseshoe shape on the buttocks, and the contact surface 39 is passed through the cushioning part 1 from the rear side of the shoe. The print P can be visually observed. Therefore, not only the super-deformed vibration absorber 3 but also the casing 2 is formed of a transparent or translucent transparent material.
Further, in this embodiment, in order to make the external deformation of the super deformed vibration absorber 3 (buffer part 1) easy to visually recognize (in order to make it noticeable), light is applied to the vicinity of the end of the super deformed vibration absorber 3. The daylighting unit 40 to be taken in is formed, but it is also possible to make the outer appearance of the projecting deformation of the super-deformation vibration absorber 3 and the printing of the contact surface 39 from this daylighting unit 40. Therefore, in this case, the daylighting unit 40 also corresponds to the exposed portion 37.

Further, in the embodiment shown in FIG. 13 (d), when the appearance of the print P is visually observed by the projecting deformation / contact of the super-deformed vibration absorber 3 described above, the end of the casing 2 (buffer part 1) that becomes the viewing direction is arranged. This is an embodiment that is cut obliquely, and is a configuration that can be adopted when it is desired to widen the range in which the print P can be seen (the viewing angle at which the appearance can be visually confirmed).
The embodiment shown in FIG. 13 (e) is an embodiment in which the shock-absorbing part 1 (see FIG. 6 (i)) in which both ends of the casing 2 are cut obliquely is curved and installed in a horseshoe shape on the shoe. Here, the shock-absorbing part 1 is generally trapezoidal in a straight state, and is installed so that the longer one of the diagonal cut is positioned on the outer side of the horseshoe. That is, in this embodiment, it is desired to shine light on the cross section of the oblique cut, but it is not always preferable to expose the cross section when considering fixation to the midsole 32 or appearance. This is a preferred embodiment in such a case. In other words, if the installation form of the shock-absorbing parts 1 as shown in this figure is adopted, the longer side of the oblique cut comes to the outer side of the horseshoe (the outer edge side of the shoe), so that fixing force enhancement and appearance improvement are achieved at the same time It can be done. Incidentally, here, the daylighting unit 40 that takes in light from the side portion of the shoe also functions as the dew-viewing unit 37 and the appearance is viewed from here.

  In the above description of FIG. 13C, it has been described that the print P can be seen for the first time when the super-deformed vibration absorber 3 comes into contact with the contact surface 39. For example, in the separated state at no load, the print P May appear blurry, and various prints P can be seen, such as making them clearly visible when they come into contact with the contact surface 39 under a compression load. That is, it is only necessary to produce different appearances of the print P when there is no load (separated state) and when the compression load is applied (contact state). deep.

First, in FIG. 14A, in the separated state in which the super-deformed vibration absorber 3 is separated from the contact surface 39, the print P (character “A” in this case) whose outline is blurred is in contact with the compression load. In this state, the embodiment can be clearly seen.
FIG. 14B shows an example in which an appropriate color (print P) that appears light in the separated state appears darker in the contact state.
FIG. 14C shows an embodiment in which the print P (in particular, the color is not particularly important) that appears dark at the center in the separated state appears to be broadened and lightened in the contact state.
FIG. 14D shows an example in which the print P (letter “A” in this case) that looked small in the separated state appears in an enlarged state in the contact state. In this case, it is considered that the super-deformed vibration absorber 3 that receives a compressive load plays a role of a kind of convex lens.
FIG. 14E shows an example in which the print P (letter “A” in this case) that looked large in the separated state appears in a reduced state in the contact state. Incidentally, in the embodiment of FIG. 14 (e), as shown in FIG. 5 (b), the printing P assumed when the cushioning part 1 is formed in a shape with a concave end surface (a kind of concave lens shape). (Of course, the material of the super-deformed vibration absorber 3 and the focal length and other conditions are also considered to be affected).

Further, the cushioning part 1 of the present invention, for example, a super-vibration vibration absorber 3 (buffer part 1) that protrudes and deforms from the end of the casing 2 when subjected to a compressive load, is attached to a sports shoe (buffer material S required). In this case, further variations can be developed, and such an embodiment will be described below.
The embodiment shown in FIG. 15 assumes a state in which a pair of shock-absorbing parts 1 according to the present invention are loaded on the left and right sides (in and out sides) of the shoe, and this is the difference in load on the left and right sides of the shoe. This is an embodiment as a kind of balance indicator that is visually observed by the amount of protruding deformation of the left and right super-deformed vibration absorbers 3 and the printing P (color).
When the amount of protrusion of the super-deformed vibration absorber 3 is small and it is difficult to adopt it as an indicator as it is, for example, as shown in FIGS. 16A and 16B, a Fresnel lens sheet 41, a resin convex lens 42, etc. It is possible to enlarge the protrusion amount (deformation amount) of the super-deformation vibration absorber 3 and make the appearance visually visible.
Of course, it is also possible to increase the amount of protrusion of the super-deformed vibration absorber 3 itself (largely protrude even with the same compression load). For example, as shown in FIG. It is also possible to provide.

Hereinafter, the cushioning material S on which such a cushioning part 1 is mounted will be summarized. In the above description, sports shoes are mainly given as an example of the cushioning material S. However, the cushioning part 1 of the present invention can target not only sports shoes but also various cushioning materials S. As shown in FIG. 4, it can be attached to a sandal or the like, or in addition to such footwear, for example, as shown in FIG. 19, an insulator attached to a leg portion or a base portion of various precision instruments. Can be incorporated. For example, as shown in FIG. 20, the present invention can also be applied to protectors for rider suits, seismic isolation materials for heavy equipment, packing for refrigerator doors, cushions, baseball referees, and the like.
As shown in FIG. 20, when it is desired to provide a buffering function as a whole within a certain range, a continuous type buffering part 1A is preferable. This is a combination of a plurality of single-tube type buffering parts 1 combined. This is because the mounting is easier than the arrangement and the cost can be reduced. Further, when the partition wall 16 is excluded in such a buffer part 1A, the buffer part 1A is easily bent flexibly by an appropriate three-dimensional shape. Therefore, even if the buffer part 1A is formed by ordinary extrusion molding, When worn, it flexes freely in three dimensions. For example, when protecting a human joint or the like, it can sufficiently follow the complicated bending and stretching operations.

Next, the buffer characteristic of the buffer part 1 of the present invention will be described. The shock-absorbing part 1 of the present invention does not simply absorb or alleviate the shock applied to the shock-absorbing material S such as shoes, but can control how the applied shock is weakened. To do. In the description, as a comparative example for the shock-absorbing part 1 of the present invention, a shock-absorbing material (hereinafter referred to as “complete sealing”) that completely seals both ends of the tube filled with the shock-absorbing functional material (gel), A buffer material (hereinafter referred to as “simple hollow”) that is not filled with any buffer function material and that does not seal the end portion will be described as an example, and will be described based on FIG. Incidentally, in FIG. 17, the three types of buffer materials are shown together with a graph.
Moreover, the graph shown in FIG. 17 is a graph which shows the buffer characteristic at the time of performing compression load to these buffer materials, a vertical axis | shaft shows the "apparent hardness" of a buffer material, and a horizontal axis | shaft of buffer material. “Crushing degree” in the cross-sectional direction is shown. Here, the “apparent hardness” is different from the hardness of the applied material (member) itself (for this reason, it is assumed to be apparent hardness), and the hardness of the buffer material in an unloaded state (apparent hardness) Is assumed to be 0. Further, the “crushing degree” indicates a crushing degree (crushing amount) in the cross-sectional direction when considering a specific cross-section of the cushioning material (for example, a cross-section where the compressive load acts most).

Hereinafter, each buffer material will be described. First, when a compression load is applied to a completely-sealed buffer material, as shown in FIG. 17 (a), the degree of crushing initially increases substantially in proportion to the compression load. It is considered that the apparent hardness of the tube is also increased in proportion to the above, so that the apparent hardness of the tube is increased in proportion to the degree of crushing. Of course, the cushioning material absorbs the compressive load by performing a crushing deformation according to the compressive load (in other words, by increasing the apparent hardness).
However, since it is completely sealed in FIG. 17 (a), there is no escape space for the shock-absorbing functional material enclosed in the interior when it is crushed to some extent, and the limit is reached where the shock cannot be absorbed any more. This is called the “collapse limit”). When this crushing limit is reached, the cushioning material is stretched over a so-called bread pan, and thereafter the apparent hardness also increases rapidly. In this way, the completely sealed type cushioning material is filled with the cushioning function material, and both ends are completely sealed, so that the “collapse limit” is reached at a relatively early stage. That is, the fully-sealed type buffer material initially absorbs the compressive load gradually, but is considered to have a relatively short buffer characteristic until reaching the crushing limit.

On the other hand, when a compression load is gradually applied to a simple hollow type cushioning material, the tube is hollow and does not have a sealing structure. Therefore, as shown in FIG. The cushioning material is crushed without almost resisting the load. For this reason, in the case of this hollow type, the “collapse limit” is reached with a much smaller compressive load than in the completely sealed type.
However, since the cushioning material in FIG. 17B is not filled with anything inside, it reaches the “collapse limit” in a state where the inner surfaces of the opposing tubes are completely in contact with each other. The degree is considered to be larger than that of the completely sealed type. In other words, with the above-mentioned completely sealed type cushioning material, the buffer function material was filled inside and sealed, so the “collapse limit” was reached before the opposing inner surfaces of the tube were completely adhered. It has been reached. Further, since the cushioning material is normally used as a cushioning member within the range up to the collapse limit, the “collapse limit” can be said to be a buffer setting limit.
In this way, the simple cushioning material of the hollow type has an open end and no filling, so that the degree of crushing is larger (easily crushed) than the completely sealed type even under the same compression load, and the “crushing limit” Appears to be shifted to the lower right position on the graph. Incidentally, in the case of a simple hollow type cushioning material, the “collapse limit” corresponds to the “complete collapse” described in [Background Art] of this specification.

On the other hand, as shown in FIG. 17 (c), the apparent hardness of the cushioning part 1 (both ends open) of the present invention increases substantially in proportion to the degree of crushing against such a cushioning material. As with the completely sealed type, when the compression load is applied, the degree of crushing increases in proportion to the compression load, and the apparent hardness of the tube also increases in proportion to the degree of crushing. This is because it is considered. However, in the present invention, since the super-deformation vibration absorber 3 is a soft material having an extremely high elongation rate, it is considered that the super-deformation vibration absorber 3 changes at an inclination (ratio of change) that is substantially the same as or smaller than that of the completely sealed type.
In the shock-absorbing part 1 of the present invention, when the compressive load reaches a certain level, the super-deformed vibration absorber 3 protrudes and deforms from the end of the casing 2, but actually protrudes when the compressive load is applied. Whether deformation occurs depends on how the load is applied, the material of the casing 2 and the super-deformed vibration absorber 3, the cross-sectional shape and the overall structure of the shock-absorbing part 1, and the like.

And since the shock-absorbing part 1 of the present invention has such a structure, even if it is crushed to the level corresponding to the “collapse limit” of the completely sealed type, it still does not reach the collapsible limit. The size is considered to increase with the degree of crushing. However, it is considered that the tendency of increase in apparent hardness is different before and after the super-deformed vibration absorber 3 projects and deforms from the end of the casing 2 (before the projecting deformation occurs, The applied load appears as a crushing deformation as it is, but after a protruding deformation occurs, a part of the applied compressive load will appear as a protruding deformation), changing the rate of change on the graph Show.
After that, the “collapse limit” is reached, and the apparent hardness sharply increases in the same manner as the cushioning material, but the super deformed vibration absorber 3 accommodated (filled) in the casing 2 has an extremely high elongation rate. The “crushing limit” can withstand almost the same level of crushing as the hollow type (in fact, since the super-deformation vibration absorber 3 exists, the “crushing limit” of the cushioning part 1 of the present invention is However, on the graph, it is considered that it is shifted to the left somewhat from the simple hollow type).

  Thus, the shock-absorbing part 1 of the present invention is almost completely collapsed (until it becomes a Peshanco state) by the selection of the material with the casing 2 and the super-deformed vibration absorber 3, the structure, the cross-sectional shape, etc. Apparent hardness can be controlled. At least, the shock-absorbing part 1 of the present invention can be said to have a large shock-absorbing characteristic that it can be controlled without suddenly increasing the apparent hardness even when a compression load in a state of reaching the crushing limit is applied in the completely sealed type. Of course, a much larger compressive load can be applied within the crushing limit than a simple hollow type (the point that the apparent hardness sharply increases is much higher).

The shock-absorbing part 1 of the present invention has the basic structure as described above. Hereinafter, an example of a method for manufacturing such a shock-absorbing part 1 will be described.
Here, extrusion molding in which a molten resin raw material is extruded from a mold is applied. In particular, in the present invention, the super deformation vibration absorber 3 is housed inside the casing 2 and the super deformation vibration absorption is applied. The melted raw material of the casing 2 is simultaneously extruded from the outside of the body 3 to produce the buffer parts 1 and 1A.

Hereinafter, such an extruder 6 will be described. As shown in FIG. 18, as an example, the extrusion molding machine 6 includes an extrusion machine 6a, a mold 6b, a molding machine 6c, a take-up machine 6d, and a cutting machine 6e. The configuration unit will be described.
First, the extruder 6a melts a pellet-shaped resin as a raw material and feeds it into the mold 6b. As an example, the extruder 6a has a substantially cylindrical shape, and the resin raw material inlet 61 And a heater (not shown) that heats and melts the resin raw material supplied from the hopper 62 into the main body, and a screw 63 that pushes the molten raw material into the mold 6b with its rotational force. It is.
Here, at least two extruders 6a are used, and this is due to adopting a structure in which the super-deformed vibration absorber 3 is accommodated in the casing 2. That is, an extruder 6a for feeding the resin for the casing 2 and an extruder 6a for feeding the resin for the super-deformed vibration absorber 3 are provided.

Next, the mold 6b will be described. The mold 6b shapes the molten resin fed by the screw 63 (extruder 6a) into an appropriate cross-sectional shape, and substantially converts the molten resin into a desired shape by a forming die (die) 64. Shape.
Even if the same mold 6b is used, the thickness of the casing 2 and the super-deformed vibration absorber 3 can be changed by controlling the indentation pressure of the molten resin by adjusting the rotational speed of the screw 63, for example. Can do. Furthermore, it is also possible to partially stop the feeding of only the super-deformed vibration absorber 3 and thereby produce the shock-absorbing part 1 having the free space 11 as shown in FIG. 5 (c) by extrusion molding. Can do.

Next, the molding machine 6c, the take-up machine 6d, and the cutting machine 6e provided in the subsequent stage of the mold 6b will be described.
The molding machine 6c includes a cooling tank 65, in which the molded product (buffer part 1) extruded from the mold 6b (forming die 64) is cooled, and the shape of the extruded product is stabilized.
The take-up machine 6d draws out a long shaped product that has passed through the cooling tank 65 (molding machine 6c). For example, the take-up device 6d picks up the molded product with a pair of upper and lower roller belts. The take-up machine 6d smoothly passes through a series of processes from when the molten resin is fed into the mold 6b until it is molded, that is, through the extruder 6a, the mold 6b, and the molding machine 6c (cooling tank 65). In addition, the pulling force (pulling force) is adjusted. For this reason, the molten resin fed into the mold 6b from the extruder 6a is shaped by the mold 6b, and then reaches the cooling tank 65 (molding machine 6c) to stabilize the shape, and the take-up machine 6d The flow up to can be performed stably.

  Furthermore, the cutting machine 6e cuts the molded product sent out from the take-up machine 6d to an appropriate length by the cutter 66. Note that the cutting by the cutting machine 6e is not necessarily straight (in a direction substantially perpendicular to the axial direction of the extruded product), but can also be cut obliquely. At this time, when such an oblique cut is always performed at the same angle, the parallelogram-shaped buffer part 1 is obtained as shown in FIG. Further, when the oblique cut and the straight cut are alternately performed, as shown in FIG. 6 (g), the cushioning part 1 in which only one end face side is obliquely opened is obtained. Further, when the direction of the oblique cut is alternately changed for each cut (the angle is the same), as shown in FIG. ) Is obtained.

Further, when the extruded product is cut into an appropriate length, for example, as shown in the enlarged view of FIG. 18, the extruded product is pressed at an appropriate length (the desired length of the buffer part 1 as a finished product). However, when the both ends are cut, as shown in FIG. 5 (b), the cushioning part 1 in which both ends of the super-deformed vibration absorber 3 are recessed when no load is obtained is obtained. . Here, the code | symbol 67 in a figure is a press member which presses an extrusion molded product facing.
Incidentally, as shown in FIG. 6 (e), in order to obtain the cushioning part 1 in which the small hole 13 is opened only at one end, when performing a straight cut, the ratio is once every two times. The cushioning part 1 is obtained by cutting while crushing the end portion.
Moreover, if the shock absorbing part 1 is mounted on the shock absorbing material S in a horseshoe-shaped curved state, the straight shock absorbing part 1 is not bent for the first time at the assembly stage, but a bending wrinkle is given to the extruded product at the manufacturing stage. For example, as described above, the molding is performed by varying the thickness of the cross section of the shock-absorbing part 1 at the time of extrusion molding, and it is preferable to apply the following method as appropriate. That is, in addition to extrusion forming with a difference in thickness, the mold 6b (forming die 64) is formed in an appropriate R shape in advance, and an appropriate R is applied to a long extruded product, or It is possible to adopt a method such as winding the extruded product formed into a straight shape so that the thinner one is the inner side (it can be appropriately cooled) and attaching a curl.

The side view (a) which shows the shoes (buffer material required) which mounted | wore the buffer part of this invention, the perspective view (b) which drew this buffer part in the mounting state, and the buffer seen from the B direction of FIG. (B) It is arrow view (c)-(f) which shows the example of a modification of parts. When mounting a cushioning part on a shoe, an exploded perspective view (a) showing the sole of the shoe, a plan view (b) showing an outer base, and a cc cross-sectional view (c) in FIG. It is dd sectional drawing (d). FIG. 6 is a plan view corresponding to FIG. 2B showing another mounting state when the cushioning part is mounted on the shoe. It is a side view which shows the sandal which mounted | wore with the buffer part. Although it is explanatory drawing (a)-(c) which shows three types of buffer parts , figure (b) is when either one of the both ends of a super deformation | transformation vibration absorber protrudes the exterior of a casing. It becomes an Example of this invention. It is explanatory drawing which shows the various Example which mainly varied the degree of protrusion deformation | transformation of the super deformation | transformation vibration absorber in the casing both ends. It is explanatory drawing which shows various buffer parts as a continuous body mainly formed by connecting a plurality of casings (buffer parts as a single unit). It is sectional drawing which shows three types of buffer parts which accommodated several types of super deformation | transformation vibration absorbers from which a refractive index differs in one casing. It is sectional drawing which shows various other Examples which varied the cross-sectional shape of the buffer part. It is sectional drawing which shows two types of Examples which do not necessarily accommodate a super deformation | transformation vibration absorber in a solid state in a casing. It is explanatory drawing which shows a various mounting aspect, when mounting | wearing with a shock absorbing part to shoes. It is explanatory drawing which shows the various Example which gave printing to buffer parts or shoes (shuffling material required) beforehand, and made this look visually. An explanatory view (a) showing an embodiment in which the protruding deformation of the super-deformation vibration absorber is visually observed, and a print applied to a shoe (a shock absorbing material) using the protruding deformation to visually observe the appearance. It is explanatory drawing (b)-(d) which shows the done Example, and explanatory drawing (e) which shows the preferable mounting | wearing condition at the time of cutting the edge part of a buffer part diagonally. It is explanatory drawing which shows various differences in the appearance of printing using the protrusion deformation | transformation of a super deformation | transformation vibration absorber. It is explanatory drawing which shows notionally the Example as a balance indicator which built in a pair of buffer parts of this invention in the buffer material (shoes) required, and showed how to apply a load. In explanatory drawing (a) and (b) which shows the example which expands the protrusion deformation | transformation of a super deformation | transformation vibration absorber, and visually recognizes an appearance, and explanatory drawing (c) which shows the embodiment which made this protrusion deformation | transformation itself large. is there. It is explanatory drawing which shows the buffer characteristic of the buffer part of this invention. It is explanatory drawing which shows an example of the manufacturing method of the buffer part of this invention. It is the perspective view (a) which shows the precision instrument which mounted | wore the leg part with the buffer part of this invention as an insulator, and the plane sectional view (b) of the insulator which shows the mounting condition. It is a perspective view which shows the Example which applied the buffer part of the continuous body type of this invention as a protector of a rider suit.

1 Buffer parts 1A Buffer parts (continuous type)
DESCRIPTION OF SYMBOLS 2 Casing 3 Super deformation | transformation vibration absorber 4 Deformation allowable part structure 6 Extrusion machine 6a Extruder 6b Mold 6c Molding machine 6d Picker 6e Cutting machine 11 Free space 12 Air passage 13 Small hole 16 Partition 17 Partition wall 18 Cavity 19 Holding Member 30 Sole 31 Outer sole 32 Mid sole 32a Outer base 32b Mid base 32c Inner base 33 Inner sole 36 Receiving space 37 Exposed portion 38 Deformable space 39 Contact surface 40 Daylighting portion 41 Fresnel lens sheet 42 Resin convex lens 43 Pushing material 61 Extruder body 62 Hopper 63 Screw 64 Forming die (die)
65 Cooling tank 66 Cutter 67 Press member AD Adhesive S Buffer material (sport shoes)
P printing

Claims (13)

A flexible casing;
It is a shock absorbing part that is housed in this interior and comprises a super-deformation vibration absorber that mainly functions as a shock absorbing function material,
The shock-absorbing part has a deformation allowing portion structure that releases a compressive load applied to the part as a bulging deformation of the super-deformation vibration absorber in a direction substantially orthogonal to the load direction,
Further, the boundary surface between the super-deformed vibration absorber and the casing is formed by fixing at least a part thereof,
With this configuration, when a compressive load is applied to the cushioning part, the compressive load is absorbed by the bulging deformation of the super-deformable vibration absorber in the deformation allowing portion structure, and after the compressive load is released, , The super deformation absorber is restored to the initial applied shape ,
Further, the casing is formed in a cylindrical shape having at least one end opened,
Further, the bulging deformation of the super-deformable vibration absorber in the deformation-allowing portion structure includes at least a projecting deformation to the outside of the super-deformable vibration absorber at the opening end of the casing .
The shock absorbing part according to claim 1, wherein the super deformed vibration absorber has an elongation percentage of 500% or more.
The shock-absorbing part according to claim 1 or 2 , wherein the casing is formed as a single cylinder or a continuous body in which a plurality of cylinders are arranged in parallel.
The shock-absorbing part according to claim 3 , wherein when the casing is configured as a continuous body in which a plurality of cylinders are arranged in parallel, a partition wall between adjacent cylinders is not interposed.
The shock-absorbing part according to claim 1, 2, 3, or 4 , wherein the casing is formed such that both end portions are opened and the opening cross-sectional areas of the both end portions are different.
The cushioning material to which the cushioning part is attached is formed with a receiving space at a site where a cushioning function is to be imparted.
The buffer according to claim 1, 2, 3, 4, or 5 , wherein the receiving space is formed with a deformable space that allows the super-deformed vibration absorber to project and deform at the end of the casing. parts.
The cushioning material to which the cushioning part is attached is formed with a receiving space in a portion where a cushioning function is to be imparted, and at the time of wearing, the cushioning part is attached to the space.
In addition, the receiving space is formed with a contact surface that comes into contact when the super-deformed vibration absorber protrudes and deforms at the end of the casing, and subsequent contact deformation of the super-deformed vibration absorber is limited by this contact. buffering parts of claims 1, 2, 3, 4 or 5, wherein it has to so that.
The cushioning part is attached in a state where at least a part is visible from the outside in a state where it is attached to a cushioning material required.
Further, the casing and the super-deformed vibration absorber are formed of a transparent or translucent material, and the super-deformed vibration absorber is further formed of two or more materials having different refractive indexes,
The shock-absorbing part according to claim 1, 2, 3, 4, 5, 6 or 7, wherein two or more kinds of materials applied to the super-deformed vibration absorber are visually observed.
The shock-absorbing part is mounted on the shock-absorbing material in a horseshoe-shaped curved state as viewed from the direction in which the compressive load acts,
At this time, the casing is provided with an appropriate thickness difference between the thickness on the inner side of the horseshoe and the thickness on the outer side of the horseshoe. The shock-absorbing part according to claim 1, 2, 3, 4, 5, 6, 7 or 8 .
The shock-absorbing part is mounted on the shock-absorbing material in a horseshoe-shaped curved state as viewed from the direction in which the compressive load acts,
At this time, the casing, according to claim 1 wherein at least one of the horseshoe inner circumference side or horseshoe outer peripheral side is formed in a bellows, characterized in that it is formed to perform a crushed and deformed without resisting the compressive load 2, 3, 4, 5, 6, 7, 8 or 9 .
The shock-absorbing part is attached to a shock-absorbing material, and is attached in a state in which the external deformation of the super-deformed vibration absorber at the end of the casing is visually visible . 4, 5, 6, 7, 8, 9 or 10 cushioning part.
In the receiving space for the casing or the cushioning material, appropriate printing is performed in advance.
The cushioning part according to 6, 7, 8, 9, 10 or 11, wherein the appearance of the printing is visually observed in a state where the cushioning part is attached to the cushioning material required.
Appropriate printing is performed on the contact surface of the shock-absorbing material in advance, and printing is not performed for the first time when the super-deformed vibration absorber protrudes from the casing end due to the compressive load and comes into contact with the contact surface. The shock-absorbing part according to claim 7 , wherein the appearance is visually observed or printing different from that when no load is applied is visually observed.

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