JP2017007494A - Cushion structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cushion structure capable of giving cushioning properties with excellent touch feeling without generating abnormal sound when a surface material is pressed.SOLUTION: A cushion structure 3 is such that: there are included a cushion member 6 where a plurality of conical resin spring members 5 are integrally formed on one surface of a resin surface material 4, and a base material 8 which is arranged facing each of the spring members 5 formed on the cushion member 6, and has a spring abutting surface 7; and each of the resin spring members 5 is pressed through the resin surface material 4 when the other surface of the resin surface material 4 in the cushion member 6 is pressed, and elastically deformed during being abutted on the spring abutting surface of the base material 8 so as to give cushioning properties to the resin surface material 4.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a cushion structure suitable as an interior material of a vehicle such as an automobile, and more particularly to a cushion structure capable of imparting cushioning properties with good tactile sensation without generating abnormal noise when pressed.

  Conventionally, various cushion structures that can be used as interior materials for vehicles such as automobiles have been proposed. For example, Japanese Patent Laid-Open No. 2000-85434 has an armrest core and an armrest skin that is attached to the front surface of the armrest core and includes a plurality of spacer ribs on the back surface, and when a load is applied to the armrest, A vehicle armrest provided with spacer rib falling-in regulating means for regulating the falling-down is described.

  In such a vehicle armrest, even when an occupant applies an elbow to the upper surface of the armrest and applies a load, the spacer ribs are prevented from falling through the spacer rib falling-in restricting means, so that each spacer rib is elastically deformed into a substantially square shape. The elastic repulsion force at that time can be effectively applied, and good cushion performance can be obtained.

JP 2000-85434 A

  Certainly, when the movable end of the spacer rib provided on the back surface of the armrest skin is always in contact with the spacer rib fall-in restricting means, each spacer rib is elastically deformed immediately when a load is applied to the armrest.

  However, in the armrest shown in FIG. 5 of Patent Document 1, the movable end of each of the plurality of spacer ribs provided on the back surface of the armrest skin does not apply a load to the armrest, and the stopper protrusion (spacer rib collapse regulation) In the period from when a load is applied to the armrest until the movable end of each spacer rib comes into contact with the stopper projection, the movable end of each spacer rib slides on the surface of the armrest core. Moving.

  In this way, when the movable end of each spacer rib moves so as to slide on the surface of the armrest core, abnormal noise may occur due to the movable end of each spacer rib being always in contact with the surface of the armrest core. Maybe there. Such abnormal noise is not preferable because it causes discomfort to the passenger.

  The present invention has been made to solve the above-described problems in the prior art, and provides a cushion structure capable of imparting cushioning properties with good tactile sensation without generating any abnormal noise even when pressed. For the purpose.

  In order to achieve the above object, a cushion structure according to claim 1 of the present application is formed on a cushion member in which a plurality of conical resin spring members are integrally formed on one surface of a resin surface material, and the cushion member. Each of the resin spring members is disposed on the resin surface when the other surface of the resin surface material of the cushion member is pressed. While being pressed through the material, it is elastically deformed while being in contact with the spring contact surface of the base material, and cushioning properties are imparted to the resin surface material.

  The cushion structure according to claim 2 is the cushion structure according to claim 1, wherein the spiral elastic material constituting the resin spring member is continuously opposed to the base material, and the resin structure of the cushion member is made of resin. As the other surface of the surface material is pressed, the spiral elastic material is sequentially brought into contact with the spring contact surface of the base material.

  A cushion structure according to a third aspect is the cushion structure according to the second aspect, wherein the helical elastic material is subjected to a pressing amount of the resin surface material after sequentially contacting the spring contact surface of the base material. In addition, a pressing amount generating portion that is additionally generated is provided.

  According to a fourth aspect of the present invention, the cushion structure according to the third aspect is characterized in that the pressing amount generating portion is configured in an elastically deformable shape.

  A molding apparatus for a cushion member according to a fifth aspect includes an upper die, a lower die, and an ejector pin that is movably disposed between the upper die and the lower die, and is formed of a conical resin on one surface of the resin surface material. A molding apparatus for molding a cushion member in which a plurality of spring members are integrally formed, the first cavity for molding the surface material between the lower mold, the upper mold and the ejector pin, and the upper mold and the ejector pin. A second cavity for molding the spring member, and resin is injected into the first cavity and the second cavity so that the surface material and the spring member are integrally molded, and the upper mold is separated and moved. In addition, the lower mold is moved in the direction opposite to the conical direction of the spring member, and the spring member is removed from the ejector pin using the elastic deformation of the spring member. And butterflies.

  According to a sixth aspect of the present invention, there is provided a molding method for a cushion member comprising: an upper mold, a lower mold, and an ejector pin that is movably disposed between the upper mold and the lower mold; A molding method for molding a cushion member in which a plurality of resin spring members are integrally formed, the first cavity for molding the surface material between the lower mold, the upper mold and the ejector pin, and the upper A second cavity for molding the spring member is formed between a mold and an ejector pin, resin is injected into the first cavity and the second cavity, and the surface material and the spring member are integrally injection molded, and the upper mold The lower die is moved in the direction opposite to the conical direction of the spring member, and the spring member is removed from the ejector pin using the elastic deformation of the spring member. And wherein the Succoth.

  The molding die according to claim 7 includes an upper die, a lower die, and an ejector pin that is movably disposed between the upper die and the lower die, and a conical resin spring member is provided on one surface of the resin surface material. A molding die for molding a plurality of integrally formed cushion members, the first cavity for molding the surface material between the lower die, the upper die and the ejector pin, and between the upper die and the ejector pin A second cavity for molding the spring member; resin is injected into the first cavity and the second cavity; the surface material and the spring member are integrally injection-molded; Is moved in a direction opposite to the conical direction of the spring member, and the spring member is removed from the ejector pin by utilizing elastic deformation of the spring member.

In the cushion structure according to claim 1, a base material having a spring contact surface facing each spring member in the cushion member in which a plurality of conical resin spring members are integrally formed on one surface of the resin surface material. When the other surface of the resin surface material in the cushion member is pressed, each resin spring member is pressed through the resin surface material and is in contact with the spring contact surface of the substrate. Since it is elastically deformed and cushioning is imparted to the resin surface material, each spring member does not move while sliding on the surface of the base material. Therefore, abnormal noise is generated when each spring member is pressed. Can be prevented.
In addition, since the pressing load exerted on the other surface of the resin surface material when each spring member is pressed is distributed over a relatively wide range of the resin surface material without being concentrated locally, each spring member is It is elastically deformed uniformly, and thereby a uniform cushioning property can be obtained over the entire resin surface material.

  In the cushion structure according to claim 2, the spiral elastic material constituting the resin spring member is continuously opposed to the substrate, and as the other surface of the resin surface material in the cushion member is pressed, Since the spiral elastic material sequentially contacts the spring contact surface of the base material, the contact state between the spiral elastic material and the spring contact surface of the base material is gradually stabilized as each spring member is pressed. As a result, the state in which each spring moves close to the base member can be made uniform and stabilized over the entire cushion member. As a result, the cushioning properties obtained via the cushion member can be maintained uniformly and stably over the entire cushion member.

In the cushion structure according to the third aspect, the spiral elastic material has a pressing amount generating portion that additionally generates the pressing amount of the resin surface material after sequentially contacting the spring contact surface of the base material. Since it is provided, even after the spiral elastic material is sequentially brought into contact with the spring contact surface of the base material, the amount of pressing can be further increased by the pressing amount generator. Thereby, deeper cushioning properties can be realized.
In addition, as described in claim 4, the pressing amount generating portion may be configured in an elastically deformable shape.

  In the cushion member molding apparatus according to claim 5, the first cavity for molding the surface material between the lower mold, the upper mold and the ejector pin, and the second cavity for molding the spring member between the upper mold and the ejector pin. The resin is injected into the first cavity and the second cavity, the surface material and the spring member are integrally injection-molded, the upper mold is separated and moved, and the lower mold is moved in the direction opposite to the conical direction of the spring member Since the spring member is removed from the ejector pin using the elastic deformation of the spring member, a plurality of conical resin spring members are integrated on one surface of the resin surface material even if the resin spring member is conical. The cushion member formed in the above can be molded.

  In the method of molding a cushion member according to claim 6, a molding apparatus including an upper mold, a lower mold, and an ejector pin that is movably disposed between the upper mold and the lower mold is used. A first cavity for molding a surface material between the ejector pins and a second cavity for molding a spring member between the upper die and the ejector pins are formed, and a surface is formed by injecting resin into the first cavity and the second cavity. The material and the spring member are integrally injection-molded, the upper die is separated and moved, and the lower die is moved in the direction opposite to the conical direction of the spring member, and the spring member is removed from the ejector pin using the elastic deformation of the spring member. Therefore, even if the resin spring member has a conical shape, a plurality of conical resin spring members are integrally formed on one surface of the resin surface material. It can be molded.

  The molding die according to claim 7 has a first cavity for molding a surface material between the lower die, the upper die and the ejector pin, and a second cavity for molding a spring member between the upper die and the ejector pin. The resin is injected into the first cavity and the second cavity, the surface material and the spring member are integrally injection-molded, the upper mold is separated and moved, and the lower mold is moved in the direction opposite to the conical direction of the spring member, and the spring Since the spring member is removed from the ejector pin by utilizing the elastic deformation of the member, a plurality of conical resin spring members are integrally formed on one surface of the resin surface material even if the resin spring member is conical. A cushion member can be formed.

It is a schematic explanatory drawing which shows the upper end shoulder part of the vehicle door trim to which the cushion structure which concerns on this embodiment is applied. It is the sectional view on the AA line in FIG. It is a perspective view of the cushion member used for the cushion structure concerning a 1st embodiment. It is a top view of a cushion member. It is sectional drawing of the spring member provided in a cushion member. It is explanatory drawing which shows the shaping | molding method which shape | molds a cushion member using the shaping | molding apparatus (molding die) of a cushion member. It is explanatory drawing which shows the shaping | molding method which shape | molds a cushion member using the shaping | molding apparatus (molding die) of a cushion member. It is explanatory drawing which shows the shaping | molding method which shape | molds a cushion member using the shaping | molding apparatus (molding die) of a cushion member. It is explanatory drawing which shows the state by which the spring member of a cushion member is pressed by the cushion structure which concerns on 1st Embodiment, FIG. 9 (A) is a perspective view which takes out only a spring member and shows FIG. 9 (B). 9C is a schematic cross-sectional view of the cushion structure showing a state before pressing the material, FIG. 9C is a schematic cross-sectional view of the cushion structure showing a state where the surface material is pressed to some extent, and FIG. It is a schematic cross section of the cushion structure showing a completed state. It is explanatory drawing which shows the state by which the spring member of a cushion member is pressed by the cushion structure which concerns on 2nd Embodiment, FIG. 10 (A) is a perspective view which takes out only a spring member, FIG.10 (B) is the surface. 10C is a schematic cross-sectional view of the cushion structure showing a state before pressing the material, FIG. 10C is a schematic cross-sectional view of the cushion structure showing a state where the surface material is pressed to some extent, and FIG. It is a schematic cross section of the cushion structure showing a completed state. It is explanatory drawing which shows the state by which the spring member of a cushion member is pressed by the cushion structure which concerns on 3rd Embodiment, FIG. 11 (A) is a perspective view which takes out only a spring member, FIG.11 (B) is a surface. 11C is a schematic cross-sectional view of the cushion structure showing a state before pressing the material, FIG. 11C is a schematic cross-sectional view of the cushion structure showing a state where the surface material is pressed to some extent, and FIG. FIG. 11E is a schematic cross-sectional view of the cushion structure showing a state in which the spiral elastic material of the spring member is in contact with the spring contact surface of the base material. FIG. 11E further presses the surface material from the state shown in FIG. It is a schematic cross-sectional view of the cushion structure showing a state where the pressing of the surface material is completed. It is explanatory drawing which shows the state by which the spring member of a cushion member is pressed by the cushion structure which concerns on 4th Embodiment, FIG. 12 (A) is a perspective view which takes out only a spring member and shows FIG. 12 (B). 12C is a schematic cross-sectional view of the cushion structure showing a state before pressing the material, FIG. 12C is a schematic cross-sectional view of the cushion structure showing a state where the surface material is pressed to some extent, and FIG. FIG. 12E is a schematic cross-sectional view of the cushion structure showing a state in which the spiral elastic material of the spring member is in contact with the spring contact surface of the base material, and FIG. 12E further presses the surface material from the state shown in FIG. Then, a schematic cross-sectional view of the cushion structure showing a state in which the spiral elastic material of the spring member is first deformed, FIG. 12 (F) further presses the surface material from the state shown in FIG. Spiral bullet It is a schematic cross-sectional view of the cushion structure showing a state where the pressing has been completed the timber by a second deformed surface material. It is explanatory drawing which shows the state by which the spring member of a cushion member is pressed by the cushion structure which concerns on 5th Embodiment, FIG. 13 (A) is a perspective view which takes out only a spring member and shows FIG. 13 (B). 13C is a schematic cross-sectional view of the cushion structure showing a state before pressing the material, FIG. 13C is a schematic cross-sectional view of the cushion structure showing a state where the surface material is pressed to some extent, and FIG. FIG. 13E is a schematic cross-sectional view of the cushion structure showing a state in which the spiral elastic material of the spring member is in contact with the spring contact surface of the base material, and FIG. 13E further presses the surface material from the state shown in FIG. It is a schematic cross-sectional view of the cushion structure showing a state where the pressing of the surface material is completed. It is explanatory drawing which shows the state by which the spring member of a cushion member is pressed by the cushion structure which concerns on 6th Embodiment, FIG. 14 (A) is a perspective view which takes out only a spring member, FIG.14 (B) is a surface. 14C is a schematic cross-sectional view of the cushion structure showing a state before pressing the material, FIG. 14C is a schematic cross-sectional view of the cushion structure showing a state where the surface material is pressed to some extent, and FIG. 14C is a schematic cross-sectional view of the cushion structure showing a state in which the spiral elastic material of the spring member is in contact with the spring contact surface of the base material, and FIG. 14 (E) further presses the surface material from the state shown in FIG. 14 (D). It is a schematic cross-sectional view of the cushion structure showing a state where the pressing of the surface material is completed. It is a graph which shows the relationship between the pressing amount (stroke) of a spring member when pressing a spring member, and the reaction force received from a spring member in the cushion structure which concerns on 1st thru | or 6th embodiment.

Hereinafter, a cushion structure according to the present invention will be described with reference to the drawings based on a first embodiment in which the present invention is embodied by a vehicle door trim.
1 and 2, the vehicle door trim 1 has an ornament 2, and the ornament 2 is provided with a cushion structure 3.

  The cushion structure 3 provided in the ornament 2 includes a cushion member 6 in which a plurality of conical resin spring members 5 are integrally formed on one surface (inner surface in FIG. 2) of the resin surface material 4 (surface layer member); A base material 8 having a spring abutting surface 7 and being arranged to face each spring member 5 formed on the cushion member 6 is provided.

  Here, the cushion member 6 is molded from a soft polymer such as an olefin-based thermoplastic elastomer (styrene-based elastomer, vinyl chloride-based elastomer, etc.), and the resin surface material 4 and the plurality of spring members 5 are formed by a molding method described later. It is integrally formed with.

  The base material 8 is molded from a hard polymer such as polypropylene, and the surface of the base material 8 facing the spring members 5 of the cushion member 6 is a spring contact surface 7.

  In the cushion structure 3 configured as described above, when the other surface (the outer surface in FIG. 2) of the resin surface material 4 in the cushion member 6 is pressed, each resin spring member 5 has the resin surface material 4. And is elastically deformed while being abutted against the spring abutment surface 7 of the base material 8, and cushioning is imparted to the resin surface material 4. Therefore, it is possible to prevent abnormal noise from being generated when each spring member 5 is pressed.

  In addition, the pressing load exerted on the other surface of the resin surface material 4 when each spring member 5 is pressed is dispersed over a relatively wide range of the resin surface material 4 without being concentrated locally. The spring member 5 is elastically deformed uniformly, whereby a uniform cushioning property can be obtained over the entire resin plate 4.

Here, the cushion member 6 which comprises the cushion structure 3 is demonstrated based on FIG. 3 thru | or FIG. 3 to 5, in order to facilitate understanding, the resin surface material 4 is schematically illustrated in a flat plate shape with a part thereof enlarged.
The cushion member 6 is formed by integrally forming a plurality of resin spring members 5 on one surface (the upper surface in FIGS. 3 to 5) of the resin surface material 4.

Each spring member 5 is formed in a conical coil spring as shown in FIGS. That is, each spring member 5 is composed of a conical spiral elastic material 9 so as to have a smaller diameter as the distance from the resin surface material 4 increases. As shown in FIG. 2, the spiral elastic material 9 is gradually reduced in diameter from the large diameter portion on the resin surface material 4 side with respect to the spring contact surface 7 of the base material 8 based on the spiral shape. It arrange | positions so that a small diameter part may contact | abut to the spring contact surface 7. FIG.
In the state shown in FIG. 2, the surface on the base material 8 side of the spiral elastic material 9 continuously faces the spring contact surface 7 of the base material 8 based on the spiral shape. This will be described later.

  Next, a molding apparatus, a molding die, and a molding method for integrally molding the cushion member 6 will be described with reference to FIGS. In addition, according to the shaping | molding die of the shaping | molding apparatus which concerns on this embodiment, although the several spring member 5 provided in the cushion member 6 of predetermined size can be integrally formed simultaneously, in the following, the convenience of explanation and easy understanding For the sake of simplicity, a cushion member 6 having one spring member 5 will be described as an example.

  First, the molding device for the cushion member 6 will be described. The molding apparatus 10 basically includes a molding die 14 including a lower die 11, an upper die 12, and an ejector pin 13 that is movably disposed between the lower die 11 and the upper die 12.

  In the molding die 14, a first cavity 15 for molding the surface material 4 is formed between the lower die 11, the upper die 12 and the ejector pin 13 by appropriately driving the lower die 11, the upper die 12 and the ejector pin 13. A second cavity 16 for forming the spring member 5 is formed between the upper mold 12 and the ejector pin 13.

  In order to mold the cushion member 6 including the resin surface material 4 and the spring member 5 using the molding die 14 of the molding apparatus 10, first, the olefin-based heat melted in the first cavity 15 and the second cavity 16. A resin such as a plastic elastomer is injected to fill the first cavity 15 and the second cavity 16 with the resin. Thereafter, the cushion member 6 is molded in the first cavity 15 and the second cavity 16 by cooling the mold 14 to a predetermined temperature. This state is shown in FIG.

  Thereafter, the upper die 12 is separated and moved upward by ejecting the pin 13A of the ejector pin 13 upward. This state is shown in FIG.

  Further, the lower die 11 is moved downward with the pin 13A of the ejector pin 13 ejected as described above. At this time, the conical shape of the spring member 5 has a shape that continues from the large-diameter portion to the small-diameter portion as it is separated from the surface material 4 side, and the base portion 13B of the ejector pin 13 has a similar conical shape. However, since the spring member 5 can be elastically deformed flexibly based on being formed of a soft polymer such as an olefin-based thermoplastic elastomer, the spring member 5 can be moved downward. The spring member 5 is elastically deformed flexibly and is detached from the base portion 13B of the ejector pin 13. This state is shown in FIG.

  Thus, even if the resin spring member 5 is conical, the cushion member 6 in which a plurality of conical resin spring members 5 are integrally formed on one surface of the resin surface material 4 can be formed.

  Next, the cushioning action of the cushion structure 3 according to the first embodiment constituted by the cushion member 6 and the base material 8 formed as described above will be described with reference to FIG.

  The spring member 5 formed integrally with the surface material 4 has a conical shape shown in FIG. 9A, and the spiral elastic material 9 constituting the spring member 5 is shown in FIGS. 9B to 9. As shown in (D), it has a chamfered substantially trapezoidal cross-sectional shape. Of the substantially trapezoidal cross-sectional shape, the lower surface 9A in FIG. 9 is formed in a flat shape, and in the state where the surface material 4 is not pressed, as shown in FIG. A lower surface 9 </ b> A located at the lowermost end of the spiral elastic material 9 is in contact with the spring contact surface 7 of the substrate 8.

  When the upper surface of the surface material 4 is pressed from the state shown in FIG. 9B, the spring member 5 formed on the lower surface of the surface material is gradually pressed and compressed. 9 (C).

  When the surface material 4 is further pressed, the spring member 5 is further pressed and compressed. At this time, the lower surface 9A of the spiral elastic material 9 is sequentially brought into contact with the spring contact surface 7 of the base material 8, and when the pressing of the surface material 4 is completed, all the lower surfaces 9A of the spiral elastic material 9 are As shown in FIG. 9 (D), the substrate 8 is brought into contact with the spring contact surface 7.

  As described above, in the cushion structure 3 according to the first embodiment, when the upper surface of the surface material 4 in the cushion member 6 is pressed, each spring member 5 is pressed through the surface material 4 and the base material 8. The spring 5 is elastically deformed while being in contact with the spring contact surface 7 and cushioning is imparted to the surface material 4, so that each spring 5 does not move while sliding on the surface of the base material 8. It is possible to prevent abnormal noise from being generated when each spring member 5 is pressed.

  Further, since the pressing load exerted on the upper surface of the surface material 4 when each spring member 5 is pressed is distributed over a relatively wide range of the surface material 4 without being concentrated locally, each spring member 5 is uniform. Thus, a uniform cushioning property can be obtained over the entire surface material 4.

  Further, the lower surface 9A of the spiral elastic material 9 constituting the spring member 5 is continuously opposed to the base material 8, and as the upper surface of the surface material 4 in the cushion member 6 is pressed, the spiral elastic material Since the lower surface 9A of 9 is sequentially brought into contact with the spring contact surface 7 of the base material 8, the lower surface 9A of the spiral elastic material 9 and the spring contact surface of the base material 8 as each spring member 5 is depressed. 7 is gradually stabilized, and the proximity movement state of each spring 5 with respect to the base material 8 can be made uniform and stabilized over the entire cushion member 6. As a result, the cushioning property obtained via the cushion member 6 can be maintained uniformly and stably over the entire cushion member 6.

Next, the cushioning action of the cushion structure 103 according to the second embodiment constituted by the cushion member 106 and the base material 108 will be described with reference to FIG.
The cushion structure 103 according to the second embodiment has basically the same configuration as that of the cushion structure 3 according to the first embodiment, but the helical elasticity in the spring member 105 that constitutes the cushion member 106 is. The cross-sectional shape of the material 109 is different from the cross-sectional shape of the spiral elastic material 9 of the spring member 5 of the cushion member 6 in the cushion structure 3 according to the first embodiment.

  That is, the spring member 105 integrally formed with the surface material 104 has a conical shape shown in FIG. 10A, and the spiral elastic material 109 constituting the spring member 105 is formed as shown in FIG. As shown in FIG. 10D, it has a trapezoidal cross-sectional shape in which a slope 109B is formed on the side toward the center. Of the trapezoidal cross-sectional shape, the lower surface 109A in FIG. 10 is formed in a flat shape, and in the state where the surface material 104 is not pressed, as shown in FIG. The lower surface 109 </ b> A located at the lowest end of the elastic member 109 is in contact with the spring contact surface 107 of the base material 108.

  When the upper surface of the surface material 104 is pressed from the state shown in FIG. 10 (B), the spring member 105 formed on the lower surface of the surface material 104 is gradually pressed and compressed. The state shown in FIG.

  As the surface material 104 is further pressed, the spring member 105 is further pressed and compressed. At this time, the lower surface 109A of the spiral elastic material 109 is sequentially brought into contact with the spring contact surface 107 of the base material 108, and when the pressing of the surface material 104 is completed, all the lower surfaces 109A of the spiral elastic material 109 are As shown in FIG. 10 (D), it comes into contact with the spring contact surface 107 of the base material 108.

  As described above, in the cushion structure 103 according to the second embodiment, when the upper surface of the surface material 104 in the cushion member 106 is pressed, each spring member 105 is pressed through the surface material 104 and the base material 108. The spring 105 is elastically deformed while being abutted against the spring abutment surface 107, and cushioning is imparted to the surface material 104. Therefore, each spring 105 does not move while sliding on the surface of the base material 108. It is possible to prevent abnormal noise from being generated when each spring member 105 is pressed.

  Further, since the pressing load exerted on the upper surface of the surface material 104 when each spring member 105 is pressed is distributed over a relatively wide range of the surface material 104 without being concentrated locally, each spring member 105 is uniform. Thus, a uniform cushioning property can be obtained over the entire surface material 104.

  Further, the lower surface 109A of the spiral elastic material 109 constituting the spring member 105 is continuously opposed to the base material 108, and as the upper surface of the surface material 104 in the cushion member 106 is pressed, the spiral elastic material Since the lower surface 109A of 109 is sequentially brought into contact with the spring contact surface 107 of the base material 108, the lower surface 109A of the spiral elastic member 109 and the spring contact surface of the base material 108 as each spring member 105 is pressed. The contact state with 107 is gradually stabilized, and the proximity movement state of each spring 105 with respect to the base material 108 can be made uniform and stabilized over the entire cushion member 106. As a result, the cushioning property obtained via the cushion member 106 can be maintained uniformly and stably over the entire cushion member 106.

Next, the cushioning action of the cushion structure 203 according to the third embodiment configured by the cushion member 206 and the base material 208 will be described with reference to FIG.
The cushion structure 203 according to the third embodiment has basically the same configuration as the cushion structure 3 according to the first embodiment, but the helical elasticity in the spring member 205 that constitutes the cushion member 206 is. The cross-sectional shape of the material 209 is different from the cross-sectional shape of the spiral elastic material 9 of the spring member 5 of the cushion member 6 in the cushion structure 3 according to the first embodiment.

  That is, the spring member 205 integrally formed with the surface material 204 has a conical shape as shown in FIG. 11A, and the spiral elastic material 209 constituting the spring member 205 is the same as that shown in FIGS. As shown in FIG. 11D, it has a U-shaped cross section with the surface material 204 facing upward. Among such U-shaped cross-sectional shapes, the lower surface 209A in FIG. 11 is formed in a flat shape, and in a state where the surface material 204 is not pressed, as shown in FIG. A lower surface 209 </ b> A located at the lowermost end of the spiral elastic material 209 is in contact with the spring contact surface 207 of the base material 208.

  When the upper surface of the surface material 204 is pressed from the state shown in FIG. 11B, the spring member 205 formed on the lower surface of the surface material 204 is gradually pressed and compressed. The state shown in FIG.

  As the surface material 204 is further pressed, the spring member 205 is further pressed and compressed. At this time, the lower surface 209A of the spiral elastic material 209 is in contact with the spring contact surface 207 of the base material 208 sequentially, and when the pressing of the surface material 204 is completed, all the lower surfaces 209A of the spiral elastic material 209 are As shown in FIG. 11 (D), the spring comes into contact with the spring contact surface 207 of the substrate 208.

  Here, in the state shown in FIG. 11D, all the lower surfaces 209A of the spiral elastic material 209 are in contact with the spring contact surface 207 of the base material 208. However, the spiral elastic material 209 is described above. Thus, it has a U-shaped cross-sectional shape and is integrally molded together with the surface material 204 from a soft polymer. Therefore, by pressing the surface material 204 in the state shown in FIG. The elastic material 209 can be further elastically deformed.

  That is, the spiral elastic member 209 is a pressing amount generating unit that additionally generates a pressing amount of the rear surface member 204 that is sequentially brought into contact with the spring contact surface 207 of the base material 208 based on its cross-sectional shape. Even after the spiral elastic material 209 is sequentially brought into contact with the spring contact surface 207 of the base material 208, the pressing amount is further reduced by the spiral elastic material 209 having a U-shaped cross-sectional shape. It can be increased additionally. Thereby, deeper cushioning properties can be realized.

  As described above, in the cushion structure 203 according to the third embodiment, when the upper surface of the surface material 204 in the cushion member 206 is pressed, each spring member 205 is pressed through the surface material 204 and the base material 208. The spring 205 is elastically deformed while being in contact with the spring contact surface 207 and cushioning is imparted to the surface material 204, so that each spring 205 does not move while sliding on the surface of the base material 208. It is possible to prevent abnormal noise from being generated when each spring member 205 is pressed.

  Further, since the pressing load exerted on the upper surface of the surface material 204 when each spring member 205 is pressed is distributed over a relatively wide range of the surface material 204 without being concentrated locally, each spring member 205 is uniform. Thus, a uniform cushioning property can be obtained over the entire surface material 204.

  Further, the lower surface 209A of the spiral elastic material 209 constituting the spring member 205 is continuously opposed to the base material 208, and as the upper surface of the surface material 204 of the cushion member 206 is pressed, the spiral elastic material Since the lower surface 209A of 209 is sequentially brought into contact with the spring contact surface 207 of the base material 208, the lower surface 209A of the spiral elastic material 209 and the spring contact surface of the base material 208 as each spring member 205 is pressed. The contact state with 207 is gradually stabilized, and the proximity movement state of each spring 205 with respect to the base material 208 can be made uniform and stabilized over the entire cushion member 206. As a result, the cushioning property obtained via the cushion member 206 can be maintained uniformly and stably over the entire cushion member 206.

Next, a cushioning action of the cushion structure 303 according to the fourth embodiment configured by the cushion member 306 and the base material 308 will be described with reference to FIG.
The cushion structure 303 according to the fourth embodiment has basically the same configuration as that of the cushion structure 3 according to the first embodiment, but the helical elasticity in the spring member 305 that constitutes the cushion member 306. The cross-sectional shape of the material 309 is different from the cross-sectional shape of the spiral elastic material 9 of the spring member 5 of the cushion member 6 in the cushion structure 3 according to the first embodiment.

  That is, the spring member 305 integrally formed with the surface material 304 has a conical shape as shown in FIG. 12A, and the spiral elastic material 309 constituting the spring member 305 is shown in FIG. As shown in FIG. 12D, it has an L-shaped cross-sectional shape in which the surface material 304 is the upper side and the side toward the center is opened. Of the L-shaped cross-sectional shape, the lower surface 309A in FIG. 12 is formed in a flat shape, and in the state where the surface material 304 is not pressed, as shown in FIG. A lower surface 309 </ b> A located at the lowermost end of the spiral elastic material 309 is in contact with the spring contact surface 307 of the base material 308.

  When the upper surface of the surface material 304 is pressed from the state shown in FIG. 12B, the spring member 305 formed on the lower surface of the surface material 304 is gradually pressed and compressed. The state shown in FIG.

  As the surface material 304 is further pressed, the spring member 305 is further pressed and compressed. At this time, the lower surface 309A of the spiral elastic material 309 sequentially contacts the spring contact surface 307 of the base material 308, and when the pressing of the surface material 304 is completed, all the lower surfaces 309A of the spiral elastic material 309 are As shown in FIG. 12 (D), the spring comes into contact with the spring contact surface 307 of the base material 308.

  Here, in the state shown in FIG. 12D, all the lower surfaces 309A of the spiral elastic material 309 are in contact with the spring contact surface 307 of the base material 308. Thus, it has an L-shaped cross-sectional shape and is integrally molded together with the surface material 304 from a soft polymer. Therefore, by pressing the surface material 304 in the state shown in FIG. The elastic material 309 can be further elastically deformed.

  That is, the spiral elastic material 309 is a pressure that additionally generates a pressing amount of the rear surface material 304 that is sequentially brought into contact with the spring contact surface 307 of the base material 308 based on the L-shaped cross-sectional shape. It acts as a quantity generator. Specifically, as shown in FIG. 12D, after the spiral elastic material 309 is sequentially brought into contact with the spring contact surface 307 of the base material 308, when the surface material 304 is further pressed, the spiral elastic material 309 is pressed. First, the material 309 falls down toward the center as shown in FIG. When the surface material 304 is further pressed, the L-shaped portion of each spiral elastic material 309 is elastically deformed as shown in FIG. In this way, the pressing amount of the surface material 304 can be further increased by the spiral elastic material 309 having an L-shaped cross-sectional shape. Thereby, deeper cushioning properties can be realized.

  As described above, in the cushion structure 303 according to the fourth embodiment, when the upper surface of the surface material 304 in the cushion member 306 is pressed, each spring member 305 is pressed through the surface material 304 and the base material 308. The spring 305 is elastically deformed while being in contact with the spring contact surface 307 and cushioning is imparted to the surface material 304, so that each spring 305 does not move while sliding on the surface of the base material 308. It is possible to prevent abnormal noise from being generated when each spring member 305 is pressed.

  In addition, since the pressing load exerted on the upper surface of the surface material 304 when the spring members 305 are pressed is distributed over a relatively wide range of the surface material 304 without being concentrated locally, each spring member 305 is uniform. Thus, a uniform cushioning property can be obtained over the entire surface material 304.

  Further, the lower surface 309A of the spiral elastic material 309 constituting the spring member 305 is continuously opposed to the base material 208, and as the upper surface of the surface material 304 of the cushion member 306 is pressed, the spiral elastic material Since the lower surface 309A of 309 is sequentially brought into contact with the spring contact surface 307 of the base material 308, the lower surface 309A of the spiral elastic member 309 and the spring contact surface of the base material 308 as each spring member 305 is pressed. The contact state with 307 is gradually stabilized, and the proximity movement state of each spring 305 with respect to the base material 308 can be made uniform and stabilized over the entire cushion member 306. As a result, the cushioning property obtained via the cushion member 306 can be maintained uniformly and stably over the entire cushion member 306.

Next, the cushioning action of the cushion structure 403 according to the fifth embodiment configured by the cushion member 406 and the base material 408 will be described with reference to FIG.
The cushion structure 403 according to the fifth embodiment has basically the same configuration as that of the cushion structure 3 according to the first embodiment, but the helical elasticity of the spring member 405 that constitutes the cushion member 406. The material 409 is different from the spiral elastic material 9 of the spring member 5 of the cushion member 6 in the cushion structure 3 according to the first embodiment in its overall configuration and cross-sectional shape.

  That is, the spring member 405 integrally formed with the surface material 404 has a conical shape shown in FIG. 13A, and the spiral elastic material 409 constituting the spring member 405 is shown in FIG. As shown, one side passing through the center of the conical shape is formed with a constant height h, while the other side passing through the center of the conical shape is set to a height set to at least twice the height h. H1 and H2.

  Further, the lower surface 409A of the spiral elastic member 409 is formed in a flat shape, and when the surface member 404 is not pressed, as shown in FIG. 13B, the spiral elastic member 409 in the spring member 405 is formed. The lower surface 409 </ b> A located at the lowermost end of the substrate is in contact with the spring contact surface 407 of the base material 408.

  When the upper surface of the surface material 404 is pressed from the state shown in FIG. 13B, the spring member 405 formed on the lower surface of the surface material 404 is gradually pressed and compressed, and in a state where the surface material 404 is pressed to some extent, The state shown in FIG.

  As the surface material 404 is further pressed, the spring member 405 is further pressed and compressed. At this time, the lowermost spiral elastic member 409 whose lower surface 409A is in contact with the spring contact surface 407 of the base 408 is bent as shown in FIG. The lower surface 409A of the spiral elastic member 409 is brought into contact with the spring contact surface 407 of the base 408.

  When the surface material 404 is further pressed, as shown in FIG. 13E, the spiral elastic material 409 is further bent so that the entire spiral elastic material 409 is the spring contact surface 407 of the base material 408. At the same time, the adjacent spiral elastic member 409 on the right side is bent, and the body of the spiral elastic member 409 is brought into contact with the spring contact surface 407 of the substrate 408. At the same time, the lower surface 409A of the spiral elastic member 409 having a height h on one side of the spring member 405 is brought into contact with the spring contact surface 407 of the base 408.

  Here, since the spiral elastic material 409 is integrally formed from the soft polymer together with the surface material 404 as described above, by pressing the surface material 404 in the state shown in FIG. The elastic material 409 can be elastically deformed to the state shown in FIG. 13D, and further elastically deformed to the state shown in FIG. 13E by pressing the surface material 404.

  In other words, the spiral elastic material 409 functions as a pressing amount generating portion that additionally generates the pressing amount of the surface material 404 after sequentially contacting the spring contact surface 407 of the base material 408. Specifically, as shown in FIG. 13C, after the spiral elastic material 409 is in contact with the spring contact surface 407 of the base material 408, when the surface material 404 is further pressed, the spiral elastic material First, 409 is bent toward the center as shown in FIG. When the surface material 404 is further pressed, the two spiral elastic members 409 are elastically deformed as shown in FIG. In this manner, the pressing amount of the surface material 404 can be additionally increased by the spiral elastic material 409 that can be sequentially bent. Thereby, deeper cushioning properties can be realized.

  As described above, in the cushion structure 403 according to the fifth embodiment, when the upper surface of the surface material 404 in the cushion member 406 is pressed, each spring member 405 is pressed through the surface material 404 and the base material 408. The spring material is elastically deformed while being in contact with the spring contact surface 407 and cushioning is imparted to the surface material 404, so that each spring 405 does not move while sliding on the surface of the base material 408. It is possible to prevent abnormal noise from being generated when each spring member 405 is pressed.

  Further, since the pressing load exerted on the upper surface of the surface material 404 when each spring member 405 is pressed is distributed over a relatively wide range of the surface material 404 without being concentrated locally, each spring member 405 is uniform. Thus, a uniform cushioning property can be obtained over the entire surface material 404.

  Further, the lower surface 409A of the spiral elastic material 409 constituting the spring member 405 is continuously opposed to the base material 408, and as the upper surface of the surface material 404 in the cushion member 406 is pressed, the spiral elastic material Since the lower surface 409A of 409 sequentially contacts the spring contact surface 407 of the base material 408, the lower surface 409A of the spiral elastic member 409 and the spring contact surface of the base material 408 as each spring member 405 is pressed. The contact state with 407 is gradually stabilized, and the proximity movement state of each spring 405 with respect to the base material 408 can be made uniform and stabilized over the entire cushion member 406. As a result, the cushioning properties obtained via the cushion member 406 can be maintained uniformly and stably over the entire cushion member 406.

Next, the cushioning action of the cushion structure 503 according to the sixth embodiment including the cushion member 506 and the base material 508 will be described with reference to FIG.
Note that the cushion structure 503 according to the sixth embodiment has basically the same configuration as the cushion structure 3 according to the first embodiment, but the helical elasticity in the spring member 505 that constitutes the cushion member 506 is. The cross-sectional shape of the material 509 is different from the cross-sectional shape of the spiral elastic material 9 of the spring member 5 of the cushion member 6 in the cushion structure 3 according to the first embodiment.

  That is, the spring member 505 formed integrally with the surface material 504 has a conical shape as shown in FIG. 14A, and the spiral elastic material 509 constituting the spring member 505 is shown in FIG. As shown in FIG. 14E, it has an inverted U-shaped cross-section with the surface material 504 facing upward. Based on the inverted U-shaped cross-sectional shape, the lower surface 509A in FIG. 14 is formed in a double wall shape spaced apart from each other, and when the surface material 504 is not pressed, as shown in FIG. The lower surface 509 </ b> A of the spring member 505 positioned at the lowest end of the spiral elastic member 509 is in contact with the spring contact surface 507 of the base material 508.

  When the upper surface of the surface material 504 is pressed from the state shown in FIG. 14B, the spring member 505 formed on the lower surface of the surface material 504 is gradually pressed and compressed, and in a state where the surface material 504 is pressed to some extent, The state shown in FIG.

  When the surface material 5204 is further pressed, the spring member 505 is further pressed and compressed. At this time, the lower surface 509A of the spiral elastic material 509 is sequentially brought into contact with the spring contact surface 507 of the base material 508, and when the pressing of the surface material 504 is completed, all the lower surfaces 509A of the spiral elastic material 509 are As shown in FIG. 14 (D), the spring comes into contact with the spring contact surface 507 of the base material 508.

  Here, in the state shown in FIG. 14D, all the lower surfaces 509A of the spiral elastic material 509 are in contact with the spring contact surface 507 of the base material 508, but the spiral elastic material 509 has been described above. Thus, it has an inverted U-shaped cross-sectional shape and is integrally molded together with the surface material 504 from a soft polymer. Therefore, by pressing the surface material 504 in the state shown in FIG. The shaped elastic member 509 can be further elastically deformed.

  That is, the spiral elastic member 509 is a pressing amount generating portion that additionally generates a pressing amount of the rear surface member 504 that is sequentially brought into contact with the spring contact surface 507 of the base material 508 based on the cross-sectional shape thereof. Even after the spiral elastic material 509 sequentially contacts the spring contact surface 507 of the base material 508, the amount of pressing is further increased by the spiral elastic material 509 having an inverted U-shaped cross-sectional shape. Can be increased additionally. Thereby, deeper cushioning properties can be realized.

  As described above, in the cushion structure 503 according to the sixth embodiment, when the upper surface of the surface material 504 in the cushion member 506 is pressed, each spring member 505 is pressed through the surface material 504 and the base material 508. The spring 505 is elastically deformed while being in contact with the spring contact surface 507, and cushioning is imparted to the surface material 504. Therefore, the springs 505 do not move while sliding on the surface of the base material 508. It is possible to prevent abnormal noise from being generated when each spring member 505 is pressed.

  In addition, since the pressing load exerted on the upper surface of the surface material 504 when each spring member 505 is pressed is dispersed over a relatively wide range of the surface material 504 without being concentrated locally, each spring member 505 is uniform. Thus, a uniform cushioning property can be obtained over the entire surface material 504.

  Further, the lower surface 509A of the spiral elastic material 509 constituting the spring member 505 is continuously opposed to the base material 5208, and as the upper surface of the surface material 504 in the cushion member 506 is pressed, the spiral elastic material Since the lower surface 509A of 509 is sequentially brought into contact with the spring contact surface 507 of the base material 508, the lower surface 509A of the spiral elastic member 509 and the spring contact surface of the base material 508 are pressed as each spring member 505 is pressed. The contact state with 507 is gradually stabilized, and the proximity movement state of each spring 505 with respect to the base material 508 can be made uniform and stabilized over the entire cushion member 506. As a result, the cushioning property obtained via the cushion member 506 can be maintained uniformly and stably over the entire cushion member 506.

  Subsequently, in the cushion structure according to the first to sixth embodiments described above, the relationship between the pressing amount (stroke) of the spring member when the spring member is pressed and the reaction force received from the spring member is based on FIG. explain.

Here, the cushion structures according to the first to sixth embodiments can be classified as follows based on the characteristics of the spiral elastic material constituting the spring member.
That is, in the spring members 5 and 105 used in the cushion structure 3 according to the first embodiment and the cushion structure 103 according to the second embodiment, the lower surfaces 9A and 109A of the spiral elastic materials 9 and 109 are the base material 8 and After contacting the spring contact surfaces 7 and 107 of 108, the surface materials 4 and 104 are no longer compressed and pressed, and no overstroke occurs.

  Therefore, in the cushion structure 3 according to the first embodiment and the cushion structure 103 according to the second embodiment, the amount of pressing stroke (mm) of the surface materials 4 and 104 and the reaction force (N) received from the spring members 5 and 105. The relationship is the relationship shown in the SN curve 1 in FIG.

  In contrast, in the spring members 205 and 505 used in the cushion structure 203 according to the third embodiment and the cushion structure 503 according to the sixth embodiment, the lower surfaces 209A and 509A of the spiral elastic members 209 and 509 are the base material 208. , 508 even after contacting the spring contact surfaces 207, 507, the surface materials 204, 504 are based on the fact that the spiral elastic members 209, 509 have a U-shaped cross-sectional shape and an inverted U-shaped cross-sectional shape, respectively. Can be further compressed and generate a one-step overstroke.

  Therefore, in the cushion structure 203 according to the third embodiment and the cushion structure 503 according to the sixth embodiment, the pressing stroke amount (mm) of the surface materials 204 and 504 and the reaction force (N) received from the spring members 205 and 505 The relationship is the relationship shown in the SN curve 2 in FIG.

    Further, in the spring members 305 and 405 used in the cushion structure 303 according to the fourth embodiment and the cushion structure 403 according to the fifth embodiment, the lower surfaces 309A and 409A of the spiral elastic members 309 and 409 are the base members 308 and 408, respectively. Even after contacting the spring contact surfaces 307 and 407, the surface materials 304 and 404 are further compressed and pressed based on the fact that the spiral elastic members 309 and 409 have the specific shapes shown in FIGS. It is possible to generate two stages of overstroke.

  Therefore, in the cushion structure 303 according to the fourth embodiment and the cushion structure 403 according to the fifth embodiment, the pressing stroke amount (mm) of the surface materials 304 and 404 and the reaction force (N) received from the spring members 305 and 405 The relationship is the relationship shown in the SN curve 3 in FIG.

DESCRIPTION OF SYMBOLS 3 Cushion structure 4 Surface material 5 Spring member 6 Cushion member 7 Spring contact surface 8 Base material 9 Spiral elastic material 10 Molding apparatus 11 Lower mold 12 Upper mold 13 Ejector pin 14 Molding mold 15 1st cavity 16 2nd cavity

Claims (7)

A cushion member in which a plurality of conical resin spring members are integrally formed on one surface of the resin surface material;
A substrate having a spring contact surface and being arranged to face each spring member formed on the cushion member;
When the other surface of the resin surface material in the cushion member is pressed, each resin spring member is pressed through the resin surface material and is in contact with the spring contact surface of the base material. A cushion structure characterized by being elastically deformed and imparting cushioning properties to a resin surface material. The spiral elastic material constituting the resin spring member is continuously opposed to the base material,
The said elastic elastic material is contact | abutted sequentially with respect to the spring contact surface of the said base material as the other surface of the resin-made surface materials in the said cushion member is pressed. Cushion structure.   The spiral elastic material is provided with a pressing amount generating portion that additionally generates a pressing amount of the resin surface material after sequentially contacting the spring contact surface of the base material. The cushion structure according to claim 2.   The cushion structure according to claim 3, wherein the pressing amount generator is configured to be elastically deformable. Cushion member comprising an upper die, a lower die, and an ejector pin movably disposed between the upper die and the lower die, and a plurality of conical resin spring members formed integrally on one surface of the resin surface material A molding apparatus for molding
A first cavity for molding the surface material between the lower mold, the upper mold and the ejector pin; and a second cavity for molding the spring member between the upper mold and the ejector pin;
Resin is injected into the first cavity and the second cavity, and the surface material and the spring member are integrally injection molded,
Cushion member molding characterized in that the upper die is moved separately and the lower die is moved in a direction opposite to the conical direction of the spring member, and the spring member is removed from the ejector pin by utilizing elastic deformation of the spring member. apparatus. A plurality of conical resin spring members are integrally formed on one surface of a resin surface material by a molding apparatus having an upper die, a lower die, and an ejector pin that is movably disposed between the upper die and the lower die. A molding method for molding a cushion member,
Forming a first cavity for molding the surface material between the lower mold, upper mold and ejector pin, and a second cavity for molding the spring member between the upper mold and ejector pin;
Resin is injected into the first cavity and the second cavity, and the surface material and the spring member are integrally injection molded,
A method for molding a cushion member, wherein the upper die is moved separately, the lower die is moved in a direction opposite to the conical direction of the spring member, and the spring member is removed from the ejector pin using elastic deformation of the spring member. . Cushion member comprising an upper die, a lower die, and an ejector pin movably disposed between the upper die and the lower die, and a plurality of conical resin spring members formed integrally on one surface of the resin surface material A mold for molding
A first cavity for molding the surface material between the lower mold, the upper mold and the ejector pin; and a second cavity for molding the spring member between the upper mold and the ejector pin;
Resin is injected into the first cavity and the second cavity, and the surface material and the spring member are integrally injection molded,
A molding die characterized in that the upper die is moved separately and the lower die is moved in a direction opposite to the conical direction of the spring member, and the spring member is removed from the ejector pin by utilizing elastic deformation of the spring member.

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