JP3217134U - Seat fastening device - Google Patents

Abstract

The present invention provides a sheet fastener capable of easily attaching and detaching two fastening members of a pair of sheet members. A sheet fastening device includes a first fastening member and a second fastening member. The first fastening member 10 includes a first main body 11, a first extension 12 that extends while bending from the first main body 11, and a first protrusion that protrudes from the first surface of the first main body 11. 13, an accommodation space that accommodates a part of the second fastening member 20, and an opening that communicates with the accommodation space. The second fastening member 20 includes a second main body portion 21 and a substantially T-shaped second engagement portion 22 that bends and extends from the second main body portion 21. The neck 23, the engaging head 24 extending in the crossing direction with respect to the neck 23, the abutting portion disposed on the proximal end of the neck 23, and the abutting portion and the engaging head 24 And an insertion groove 26 that is recessed. [Selection] Figure 1

Description

  The present invention relates to a sheet fastening tool that fastens sheet edges of a pair of sheet members.

  For example, a seat for a vehicle such as an automobile or a railroad has a seat surface portion and a back surface portion, and parts such as a headrest and an armrest. Each part forming these seats is formed by a cushion body (also referred to as a base material) formed of a synthetic resin foam and a sheet member such as a cover member or a skin member covering the surface of the cushion body. There are many cases.

  Moreover, when performing the operation | work which covers and attaches a sheet | seat member to a cushion body, the sheet | seat edge part which a pair of sheet | seat member opposes may be piled up and fixed. In this case, in order to fasten and join the sheet edge of the other sheet member to the sheet edge of one sheet member, and to maintain the fastened state between the sheet edge parts, Dressing equipment is used. In this way, by using the sheet fastening tool, the work of fastening the sheet edge portions can be performed relatively easily. Further, since the joined parts of the sheet members can be finished relatively beautifully, the appearance quality of the product can be improved.

  Such seat fastening devices include seats for aircraft and ships, seats used in schools and office buildings, cushions for exercise equipment, furniture such as sofas and beds for residences, in addition to the vehicle seats described above. It is also often used for products that have a sheet member on the surface. In addition, the seat fastening device is not limited to a sheet member that covers the surface of a cushion body or the like, but is fastened to the edge of a sheet of a construction object such as a tent, or is fastened to the edge of a package cover for transportation. May also be used.

An example of a sheet fastener used for such a sheet member is described in Japanese Patent No. 5740480 (Patent Document 1). Here, with reference to FIG. 8 and FIG. 9, the sheet fastener of Patent Document 1 will be briefly described.
The sheet fastening tool 70 of Patent Document 1 is for fastening the sheet edge portions 61 a and 62 a of the first sheet member 61 and the second sheet member 62 that are put on the surface of the cushion body 60. The sheet fastening tool 70 includes a first fastening member 71 made of synthetic resin that is fixed to the sheet edge of the first sheet member 61 and a synthetic resin that is fixed to the sheet edge of the second sheet member 62. And a second fastening member 72 made of metal.

  The first fastening member 71 includes a first fixing portion 71a that is fixed to the edge portion of the seat, a holding portion 71b that is continuous with one end of the first fixing portion 71a and has a U-shaped or C-shaped cross section, It has the projection part 71c which protrudes from the connection part of the holding | maintenance part 71b and the 1st fixing | fixed part 71a. In addition, the holding portion 71b is formed in the holding portion 71b while being formed in the holding portion 71b and a base end portion that is continuous with the first fixing portion 71a, a tip portion (supporting portion) 71e opposite to the base end portion. It has the 1st recessed part 71d in which a part of attachment member 72 is accommodated, and the opening provided between the front-end | tip part of the holding | maintenance part 71b, and the projection part 71c.

  The second fastening member 72 includes a second fixing portion 72a that is fixed to the edge portion of the sheet, a held portion 72b that is continuous with one end of the second fixing portion 72a and has a U-shaped or C-shaped cross section. Have The held portion 72b is formed in the held portion 72b, a base end portion (contact portion) 72d continuous with the second fixed portion 72a, a distal end portion opposite to the base end portion 72d, and the held portion 72b. A second recess 72c.

  In Patent Document 1, an accommodation space portion having a size capable of accommodating the held portion 72b of the second fastening member 72 therein is formed in the first recess 71d of the first fastening member 71. Further, when the held portion 72b of the second fixing member 72 is accommodated in the first recess 71d (accommodating space portion) of the first fixing member 71, the tip of the holding portion 71b of the first fixing member 71 is stored. Portion (supporting portion) 71e abuts on the surface of the second fixing portion 72a of the second fastening member 72, and the held portion 72b of the second fastening member 72 is the first concave portion of the first fastening member 71. It contacts the innermost innermost part of 71d. When the first fastening member 71 and the second fastening member 72 come into contact with each other at these two locations, the second fastening member 72 can be locked to the first fastening member 71 and the locked state is maintained. be able to.

  When the first sheet member 61 is fixed to the second sheet member 62 using the sheet fixing device 70 of Patent Document 1 as described above, first, the second fixing member 72 is held as shown in FIG. The distal end portion 71e of the holding portion 71b of the first fastening member 71 is inserted into the second recess 72c of the second fastening member 72, approaching the first fastening member 71 from the portion 72b side. As a result, the base end portion (contact portion) 72d of the held portion 72b of the second fastening member 72 is in contact with the holding portion 71b of the first fastening member 71, and the distal end portion 71e of the holding portion 71b is the first portion 71e. 2 It contacts the innermost part of the inner surface of the recess 72c. Accordingly, a temporary holding state in which the second fastening member 72 is temporarily locked with respect to the first fastening member 71 is obtained.

  Thereafter, the second fixing member 72 is rotated so that the second fixing portion 72a approaches the first fixing member 71 around the tip end portion 71e of the holding portion 71b of the first fixing member 71. As a result, the tip edge of the held portion 72b comes into sliding contact with the inner surface of the holding portion 71b while being pressed, and the tip portion 71e of the holding portion 71b comes out of the second recess 72c, and the held portion 72b is moved to the first recess. It is inserted into 71d.

  As a result, the second fastening member 72 is locked (engaged) with the first fastening member 71 as described above, and the book holding state is changed to the first sheet member 61 and the second seating state. Even if tension is applied to the sheet member 62, the sheet member 62 is maintained. For this reason, the sheet edge portion of the second sheet member 62 can be stably fixed to the sheet edge portion of the first sheet member 61.

  By using the sheet fastening tool 70 of Patent Document 1 as described above, the work of fastening the second sheet member 62 to the first sheet member 61 can be performed smoothly and efficiently. Further, since the second fastening member 72 rotates so as to apply tension to the second sheet member 62 from the temporary holding state as described above and is locked to the first fastening member 71, the first sheet It is possible to attach the first sheet member 61 and the second sheet member 62 neatly by making it difficult for wrinkles or the like to occur in the member 61 and the second sheet member 62.

Japanese Patent No. 5740480

  When the sheet fastener 70 of Patent Document 1 is used, as described above, the second sheet member 62 can be smoothly and efficiently fixed to the first sheet member 61, but the second fixing member 72 is the first stopper. In order to remove the second fastening member 72 from the locked state once the fastening member 71 is locked, the held portion 72b of the second fastening member 72 is the first recess of the first fastening member 71. It can only be forcibly pulled out so as to be pulled out from 71d. For this reason, for example, when performing repair or maintenance of a product, the operation of removing the second sheet member 62 fixed to the first sheet member 61 becomes extremely complicated, and in some cases, the second sheet member 62 is removed. It is thought that it is impossible.

  In addition, in order to lock the second fastening member 72 to the first fastening member 71, the entire U-shaped or C-shaped held portion 72 b of the second fastening member 72 is the first fastening member. 71 must be accommodated in the first recess 71d. For this reason, the enlargement of the 1st fastening member 71 is invited, and the area of the cross section orthogonal to the length direction of the 1st fastening member 71 also becomes large. As a result, there has been a problem that it is difficult to reduce the size and weight of the seat fastener 70.

  The present invention has been made in view of the above-described conventional problems, and an object thereof is a second fastening member in which a second sheet member is fixed to a first fastening member in which the first sheet member is fixed. It is an object of the present invention to provide a seat fastener that can be easily engaged and disengaged.

  In order to achieve the above object, a sheet fastening device provided by the present invention includes a long first fastening member fixed to a sheet edge of the first sheet member, and a sheet side of the second sheet member. An elongated second fastening member fixed to the edge, and the second seat member is engaged with the first fastening member by engaging the second fastening member with the first fastening member. A seat fastening tool capable of fastening, wherein the first fastening member includes a first surface fixed to the first sheet member and a second surface disposed on the opposite side of the first surface. 1 main body part, a first extending part extending from the one end part of the first main body part to the first surface side of the first main body part, and protruding from the first surface of the first main body part And the second fastening member is disposed on the first surface facing the first fastening member and on the opposite side of the first surface. A second main body portion having a second surface, and a second main body portion bent and extended from one end portion of the second main body portion toward the first surface side of the second main body portion and having a substantially T-shaped cross section. And the first fastening member is surrounded by at least the first extending portion and the first protrusion and includes a part of the second engaging portion of the second fastening member. The second fastening member having an accommodation space portion to be accommodated, an opening formed between the distal end portion of the first extension portion and the first projecting portion and communicating with the accommodation space portion; The second engaging portion is connected to the second main body portion and extends in a direction inclined with respect to the second main body portion, and is disposed at a tip portion of the neck portion and intersects the neck portion. An engaging head extending in the direction, and an abutting portion arranged at the proximal end of the neck and abutting the first extending portion And an insertion groove formed between the contact portion and the engagement head, and a distal end portion of the first extension portion connects the second fastening member to the first fastening member. On the other hand, the main feature is that it is formed so that it can be inserted into the insertion groove of the second fastening member when being engaged and disengaged through the opening.

  In the seat fastening device of the present invention, in the cross section of the sheet fastening device, the groove width dimension of the insertion groove portion is set to 105% or more and 130% or less of the thickness dimension of the distal end portion of the first extension portion. The groove depth dimension of the insertion groove part is preferably set to 10% or more and 40% or less of the thickness dimension of the neck part.

Further, in the cross section of the first fastening member, an angle between the first surface of the first main body portion and an inner wall surface disposed on the accommodation space portion side of the first protrusion is 90 °. It is preferable that it is less than.
Further, the second fastening member has a projecting piece portion that protrudes from at least one of the second main body portion and the second engaging portion and abuts the first extending portion together with the abutting portion. It is preferable.

  In the seat fastening device of the present invention as described above, the engaging head of the second fastening member is attached to the first fastening member in order to engage (fit) the second fastening member with the first fastening member. It inserts in the accommodation space part of a member. At this time, in the present invention, first, the distal end portion of the first extension portion is inserted into the insertion groove portion of the second fastening member, and the engaging head portion of the second fastening member is the first projection of the first fastening member. By making it contact | abut to a part, a 2nd fastening member can be hold | maintained in the temporary engagement state which latches temporarily to a 1st fastening member.

  Furthermore, after this temporary engagement state, by rotating the second fastening member so as to be pushed into the first fastening member, the distal end portion of the first extending portion is removed from the insertion groove portion of the second fastening member. It can be extracted and moved to the contact portion of the second fastening member, and the engaging head of the second fastening member can be smoothly inserted into the accommodating space of the first fastening member.

  As a result, the second fastening member can be brought into contact with the first fastening member at two points, that is, the abutting portion provided on the second engaging portion and the engaging head. The member can be easily and smoothly engaged (fitted) with the first fastening member. Thus, in the present invention, the state where the second fastening member is engaged with the first fastening member by completely inserting the engaging head into the accommodating space of the first fastening member is referred to as the present engagement state. Stipulate. In the present invention, the main engagement state of the sheet fastening device is stably maintained by using the tension received by the first fastening member and the second fastening member from the first sheet member and the second sheet member. can do.

  On the other hand, when the second fastening member engaged (fitted) with the first fastening member is removed from the first fastening member, the second fastening member is moved from the first fastening member to the first extension. The leading end of the protruding portion is moved to a position where it is inserted into the insertion groove of the second fastening member, and then the second fastening member is inserted in the state where the leading end of the first extending portion is inserted into the insertion groove. 2 The second fastening member is rotated so that the body portion is separated from the first fastening member. Thereby, a 2nd fastening member can be easily and stably removed from a 1st fastening member.

  As described above, in the seat fastening device of the present invention, the second fastening portion of the second fastening member is formed in a substantially T shape and has the insertion groove portion at a predetermined position, whereby the first fastening member. Thus, the second fastening member can be easily and smoothly engaged, and the second fastening member engaged with the first fastening member can be easily and stably removed. Furthermore, since the second engagement portion is formed in a substantially T shape, the size of the accommodation space portion provided in the first fastening member is smaller than that of the seat fastening device 70 of Patent Document 1, for example. It becomes possible to do. As a result, the size of the first fastening member and the second fastening member can be reduced and the cross-sectional area of each member can be reduced. Therefore, the seat fastening device can be reduced in size, weight, and material cost can be reduced. Can be realized.

  In such a cross-section of the seat fastening device of the present invention, the groove width dimension of the insertion groove part is 105% or more and 130% or less of the thickness dimension of the tip part of the first extension part, preferably the first extension part. 110% or more and 125% or less of the thickness dimension of the tip of the part. Accordingly, when the second fastening member is engaged / disengaged with respect to the first fastening member, the distal end portion of the first extending portion of the first fastening member is easily placed in the insertion groove portion of the second fastening member. And the back end of the first extending portion can be prevented from rattling in the insertion groove of the second fastening member. Furthermore, the groove width dimension of the insertion groove part is set as described above, and the groove depth dimension of the insertion groove part is 10% or more, preferably 20% or more of the thickness dimension of the neck part of the second engagement part. Accordingly, the second fastening member can be rotated with respect to the first fastening member while the distal end portion of the first extending portion is inserted into the insertion groove portion of the second fastening member. Further, since the groove depth dimension of the insertion groove part is 40% or less, preferably 30% or less of the thickness dimension of the neck part, even if the insertion groove part is provided in the neck part of the second engagement part, The strength can be secured stably.

  Moreover, in this invention, the angle between the 1st surface of a 1st main-body part and the inner wall face distribute | arranged to the accommodation space part side of a 1st projection part is less than 90 degrees in the cross section of a 1st fastening member. Set to Thus, even if the first fastening member and the second fastening member receive tension from the first sheet member and the second sheet member, the engaging head of the second fastening member is located on the inner wall surface of the first protrusion. Since the contact state can be stably maintained, the main engagement state of the first fastening member and the second fastening member can be more stably maintained.

  Further, in the present invention, the second fastening member has a projecting piece portion that projects from at least one of the second main body portion and the second engaging portion and abuts the first extending portion together with the abutting portion. Accordingly, when the second fastening member is engaged with the first fastening member in the main engagement state, the projecting piece portion of the second fastening member can also be brought into contact with the first fastening member. This engagement state can be maintained more stably.

It is a schematic diagram which shows typically the state which fastened the sheet | seat member using the sheet | seat fastening tool which concerns on this invention. It is sectional drawing which shows typically the 1st fastening member of a sheet | seat fastening tool. It is sectional drawing which shows the 2nd fastening member of a sheet | seat fastening tool typically. It is sectional drawing which shows typically the temporary engagement state of a sheet | seat fastening tool. It is sectional drawing which shows typically this engagement state of a sheet | seat fastening tool. It is sectional drawing explaining the removal of a 2nd fastening member typically. It is sectional drawing which shows typically the sheet | seat fastening tool which concerns on a modification. It is a schematic diagram which shows typically the state which fastened the sheet | seat member using the conventional sheet | seat fastening tool. It is sectional drawing which shows typically the temporary engagement state of the conventional sheet | seat fastening tool.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic diagram schematically showing a state in which a sheet member is fastened using a sheet fastening tool according to the present embodiment. 2 and 3 are cross-sectional views schematically showing the first fastening member and the second fastening member of the sheet fastening tool, respectively.

  As shown in FIG. 1, when the seat fastening device 1 of the present embodiment is attached to the surface of the cushion body 5 by covering the first sheet member 6 and the second sheet member 7 serving as the skin members, It is used to continuously fasten the sheet edge portion 7 a of the second sheet member 7 to the sheet edge portion 6 a of the first sheet member 6 at the boundary portion between the member 6 and the second sheet member 7.

  The seat fastening device 1 according to this embodiment is mainly used for a seat for a vehicle such as an automobile. For example, a seat for an aircraft or a ship, a seat used in a school or an office building, an exercise equipment, etc. It can be used in the same way for products such as cushions and furniture such as sofas and beds for residences.

  The sheet fastening tool 1 of the present embodiment is fixed to the first fastening member 10 fixed to the sheet edge 6a of the first sheet member 6 and the sheet edge 7a of the second sheet member 7. And a second fastening member 20 to be engaged in the first fastening member 10. In this case, the first fastening member 10 and the second fastening member 20 may be referred to as an outer member and an inner member, respectively.

  In this embodiment, the 1st fastening member 10 and the 2nd fastening member 20 are the continuous long molded objects manufactured by extrusion molding, injection molding, etc. of a synthetic resin material, respectively. Further, the first fastening member 10 and the second fastening member 20 are each formed so that a cross section perpendicular to the longitudinal direction has a certain shape over the entire length direction, and is elastic. It has.

  The first fastening member 10 of the present embodiment extends while bending from a flat plate-like first main body 11 fixed to the sheet edge 6 a of the first sheet member 6 and one end of the first main body 11. The first extending portion 12, the first projecting portion 13 projecting from the first main body portion 11, and the inner portion of the first extending portion 12 are accommodated and a part of the second fastening member 20 is accommodated. The housing space 14 has an opening 15 that is provided between the tip of the first extension 12 and the first protrusion 13 and communicates with the housing space 14.

  In the first fastening member 10, the first main body portion 11 is formed in a plate shape elongated in the length direction. The first main body 11 includes a planar first surface (fixed surface) 11a fixed to the first sheet member 6 and a planar second surface 11b arranged on the opposite side of the first surface 11a. Have.

  In this case, the first surface 11 a of the first main body 11 is an outer surface facing outward with respect to the cushion body 5, and the second surface 11 b of the first main body 11 is an inner surface facing the cushion body 5. . The thickness of the first main body 11 (the dimension between the first surface 11 a and the second surface 11 b of the first main body 11) is the end of the first main body 11 that is farthest from the first extension 12. It is set to a constant size except for the (tip portion). In the present embodiment, the thickness dimension and the length dimension of the first main body 11 in a cross-sectional view can be arbitrarily changed according to the material, thickness, and the like of the first sheet member 6.

  The first extension portion 12 is bent from the first main body portion 11 to the first surface 11a side of the first main body portion 11 so as to be folded back in a substantially C shape in a cross-sectional view of the first fastening member 10. It is extended. In this case, the part where the first extension part 12 starts to bend with respect to the first body part 11 is a boundary part between the first body part 11 and the first extension part 12, and the opening part 15 extends from this boundary part. A portion up to the adjacent tip portion is the first extension portion 12. The first extension portion 12 is formed with the same thickness as the first main body portion 11 except for the tip portion of the first extension portion 12, and the tip portion of the first extension portion 12 is The first main body 11 is thinner than the first main body 11.

  The first protrusion 13 protrudes from the first surface 11 a of the first main body 11 and protrudes from the first surface 11 a toward the tip of the first extension portion 12. In the cross-sectional view of the first fastening member 10 shown in FIG. 2, the first projecting portion 13 is disposed on the outer wall surface 13 a disposed on the distal end side of the first main body portion 11 and on the accommodation space portion 14 side. It has an inner wall surface 13b and a top end surface 13c that is separated from the first surface 11a of the first main body 11 and is disposed between the upper end portion of the outer wall surface 13a and the upper end portion of the inner wall surface 13b.

  In this case, the outer wall surface 13 a of the first projecting portion 13 is arranged orthogonal to the first surface 11 a of the first main body portion 11. As shown in FIG. 2, the inner wall surface 13 b of the first protrusion 13 is arranged so that the angle θ between the inner wall surface 13 b and the first surface 11 a of the first main body 11 is less than 90 °. Yes. Particularly in the case of the present embodiment, the angle θ between the inner wall surface 13b of the first protrusion 13 and the first surface 11a of the first main body 11 is set to 40 ° or more and 70 ° or less.

  The accommodation space portion 14 formed in the first fastening member 10 includes a portion of the first main body portion 11 on the first extension portion 12 side relative to the first protrusion portion 13, the first extension portion 12, and the first extension portion 12. It is formed surrounded by the protrusion 13. The accommodating space 14 is provided corresponding to the size of a second engaging portion 22 (particularly, the engaging head 24), which will be described later, of the second fastening member 20. In the first fastening member according to the present invention, the housing space is formed to be surrounded only by the first extending portion and the first protruding portion by changing the formation position and the protruding direction of the first protruding portion. It is also possible to do.

  The opening 15 that communicates with the accommodation space 14 is provided between the tip of the first extension 12 and the first protrusion 13. As shown in FIG. 2, when the size 15a of the opening 15 is defined as the shortest distance between the distal end portion of the first extension portion 12 and the first protrusion 13, the size 15a of the opening 15 is From the minimum length L (see FIG. 3) from the insertion groove 26 arranged in the second engagement portion 22 of the second fastening member 20 to the end of the engagement head 24 on the second main body 21 side. Is set slightly smaller.

  In addition, the opening 15 has an imaginary straight line connecting the shortest distance between the tip of the first extension 12 and the first protrusion 13 with respect to the first surface 11 a of the first main body 11. It is formed so as to be arranged at an inclined angle of less than 90 °, preferably at an inclined angle of 70 ° or less. Thus, by providing the opening 15 so as to be inclined with respect to the first surface 11 a of the first main body 11, the extension length of the first extension 12 that extends while bending from the first main body 11. As a result, the first extending portion 12 can be formed with a relatively small size and a small cross-sectional area.

  As shown in FIGS. 3 and 4, the second fastening member 20 of the present embodiment includes a second main body portion 21 fixed to the sheet edge portion 7 a of the second sheet member 7, and the second main body portion 21. It has the 2nd engaging part 22 bent and extended from one end part, and the protrusion part part 27 which protrudes from the 2nd engaging part 22. The second main body portion 21 is formed in a plate shape that is elongated in the length direction.

  The second main body 21 includes a first surface (opposing surface) 21a that faces the first fastening member 10 when the second fastening member 20 is held in the main fastening state by the first fastening member 10; A planar second surface 21b disposed on the opposite side of the first surface 21a. In this case, the first surface 21 a of the second main body portion 21 becomes an inner surface arranged to face the cushion body 5, and the second surface 21 b of the second main body portion 21 faces the outer side with respect to the cushion body 5. The outer surface. In the present embodiment, the thickness dimension and the length dimension of the second main body portion 21 in the cross-sectional view can be arbitrarily changed according to the material, thickness, and the like of the second sheet member 7.

  In addition, a positioning projection 28 for positioning the second fastening member 20 with respect to the sheet edge portion 7 a of the second sheet member 7 is provided on the first surface 21 a of the second main body portion 21. In the present invention, it is also possible to form the second fastening member without providing the positioning projection 28.

  The second engaging portion 22 of the second fastening member 20 is formed to be bent toward the first surface 21 a side of the second main body portion 21 with respect to the second main body portion 21, and in the longitudinal direction (length direction). The cross section orthogonal to the shape has a substantially T-shape. The second engagement portion 22 includes a neck portion 23 extending in a direction inclined with respect to the second main body portion 21, an engagement head portion 24 disposed at a distal end portion of the neck portion 23, and a proximal end portion of the neck portion 23. And an insertion groove portion 26 that is recessed between the contact portion 25 and the engaging head 24. In this case, the boundary portion between the second main body portion 21 and the second engagement portion 22 is the second main body portion 21 side of the neck portion 23 when the cross-section of the second fastening member 20 is viewed (see FIG. 3). Is a virtual straight line portion obtained by extending the flat portion of the surface facing toward the side opposite to the engagement head 24 side or a portion in the vicinity thereof.

  The neck portion 23 of the second engaging portion 22 is connected to the second main body portion 21 and is disposed so as to extend at an angle with respect to the second main body portion 21. The engaging head 24 extends linearly from the tip of the neck 23 in a direction intersecting the neck 23 (particularly in a direction perpendicular thereto) so as to exhibit a substantially T-shaped cross section together with the neck 23. Yes.

  In this case, the engaging head 24 includes a first head 24a that extends toward the second body 21 with respect to the neck 23, and a second head 24b that extends on the opposite side of the first head 24a. And have. In the present embodiment, the first head 24 a and the second head 24 b extend with substantially the same length with respect to the center position of the neck 23.

  The abutting portion 25 of the second engaging portion 22 is configured such that the first extending portion 12 of the first fastening member 10 is held when the second fastening member 20 is held in the fully engaged state by the first fastening member 10. It is a part which contacts the front-end | tip part (especially front-end | tip surface). The contact portion 25 is disposed adjacent to the protruding piece portion 27.

  The insertion groove portion 26 of the second engagement portion 22 is provided along the length direction of the second fastening member 20 between the contact portion 25 and the second head portion 24 b of the engagement head portion 24. . The insertion groove portion 26 has a groove bottom portion that becomes a bottom surface of the insertion groove portion 26 and a pair of groove side wall portions. Moreover, the groove width dimension W of the insertion groove part 26 used as the space | interval of a pair of groove side wall part is a magnitude | size which can insert the 1st extension part 12 of the 1st fastening member 10, ie, the 1st extension part 12. It is set to be slightly larger than the thickness of the tip. In particular, the insertion groove portion 26 is formed with a size that allows the first extension portion 12 to move slightly in the insertion groove portion 26 and at the same time prevents the first extension portion 12 from rattling in the insertion groove portion 26. It is preferable that

  More specifically, in the cross section of the first fastening member 10 and the second fastening member 20 (see FIGS. 2 and 3), the groove width dimension W of the insertion groove 26 described above is the first fastening member. 10 is set to 105% or more and 130% or less, preferably 110% or more and 125% or less of the thickness dimension T1 of the tip portion of the first extension part 12. In this case, the thickness dimension T1 of the distal end portion of the first extending portion 12 refers to the distance between the inner peripheral surface and the outer peripheral surface at the distal end portion of the first extending portion 12.

  Since the groove width dimension W described above is 105% or more of the thickness dimension T1 of the distal end portion of the first extension portion 12, the second fastening member 20 is described later with respect to the first fastening member 10. When engaging and disengaging, the distal end portion of the first extension portion 12 can be easily inserted into the insertion groove portion 26 of the second fastening member 20. Further, the second fastening member 20 can be smoothly rotated with respect to the first fastening member 10 while the distal end portion of the first extending portion 12 is inserted into the insertion groove portion 26. Further, when the groove width dimension W is 130% or less of the thickness dimension T1 of the tip end portion of the first extension portion 12, the tip end portion of the first extension portion 12 is inserted into the insertion groove portion 26. In addition, it is possible to make it difficult for the distal end portion of the first extension portion 12 to rattle within the insertion groove portion 26. For example, in the case of the sheet fastener 1 of this embodiment, the groove width dimension W of the insertion groove 26 is set to 1.2 mm, and the thickness dimension T1 of the distal end of the first extension 12 is set to 1.0 mm. ing.

  Further, as shown in FIG. 3, the groove depth dimension D of the insertion groove portion 26 in the second engagement portion 22 is set to the position of the contact portion 25 of the second engagement portion 22 and the position of the groove bottom portion of the insertion groove portion 26. The groove depth dimension D is set to 10% to 40%, preferably 20% to 30%, of the thickness dimension T2 of the neck portion 23. In this case, the thickness dimension T <b> 2 of the neck portion 23 refers to the distance between the position of the surface of the neck portion 23 facing the second main body portion 21 and the position of the surface of the contact portion 25.

  When the groove depth dimension D is 10% or more of the thickness dimension T2 of the neck portion 23, the second fastening member is inserted in the state where the distal end portion of the first extension portion 12 is inserted into the insertion groove portion 26. 20 can be smoothly rotated with respect to the first fastening member 10. Further, since the groove depth dimension D described above is 40% or less of the thickness dimension T2 of the neck portion 23, the neck portion 23 can be formed with appropriate strength even if the insertion groove portion 26 is provided in the neck portion 23. it can. For example, in the case of the sheet fastener 1 of the present embodiment, the groove depth dimension D of the insertion groove portion 26 is set to 0.5 mm.

  The protruding piece portion 27 of the second fastening member 20 protrudes from the second engaging portion 22 in a direction orthogonal to the neck portion 23. In the present invention, depending on the size and shape of the second fastening member 20, the protruding piece portion 27 may be formed so as to protrude from the second main body portion 21 instead of the second engaging portion 22. . Further, as shown in a modification example described later, it is possible to form the second fastening member 20a without providing the projecting piece portion 27.

  In the sheet fastener 1 of the present embodiment as described above, the first fastening member 10 is obtained by superimposing the sheet edge 6a of the first sheet member 6 on the first surface 11a of the first main body 11. In this state, the first main body portion 11 is fixed to the first sheet member 6 by sewing to the sheet edge portion 6a of the first sheet member 6 by sewing.

  The second fastening member 20 is configured such that the second body portion 21 of the second sheet member 7 is overlapped with the sheet edge portion 7 a of the second sheet member 7 on the first surface 21 a of the second body portion 21. It is fixed to the second sheet member 7 by sewing to the sheet edge portion 7a by sewing. In this case, the second surface 21 b of the second main body 21 is not directly fixed to the second sheet member 7.

  In the present invention, the means for fixing the first fastening member 10 and the second fastening member 20 to the first sheet member 6 and the second sheet member 7 is not particularly limited, and for example, conventional methods such as adhesion and welding. Other fixing means known from can be used.

  Next, by engaging the second fastening member 20 fixed to the second sheet member 7 with the first fastening member 10 fixed to the first sheet member 6, the second sheet member 7 is moved to the first. A method for fixing to the sheet member 6 will be described. In this case, the first sheet member 6 and the second sheet member 7 are put on the surface of the cushion body 5.

  First, the operator holds the second fastening member 20 and brings the second engagement portion 22 of the second fastening member 20 close to the first fastening member 10. Further, a part of the engaging head 24 (second head 24b) of the second engaging portion 22 is inserted into the accommodating space portion 14 from the opening 15 of the first fastening member 10, as shown in FIG. And the front-end | tip part of the 1st extension part 12 of the 1st fastening member 10 is inserted in the insertion groove part 26 of the 2nd engaging part 22. FIG. At the same time, the engaging head 24 of the second engaging portion 22 is brought into contact with the top end surface 13 c of the first protrusion 13 of the first fastening member 10.

  As a result, the second engaging portion 22 of the second fastening member 20 simultaneously abuts on the first extending portion 12 and the first projecting portion 13 of the first fastening member 10, thereby the second fastening member. 20 is temporarily locked to the first fastening member 10 in a state in which the first extending portion 12 of the first fastening member 10 is inserted into the insertion groove portion 26 of the second engaging portion 22. It is held in a temporarily engaged state. In this temporary engagement state, the operator adjusts the position of the first sheet member 6 and the second sheet member 7 to adjust the position of the first sheet member 6 and the second sheet member 7. The slack etc. can be removed.

  Subsequently, as shown by the first arrow 51 in FIG. 4, the second main body portion 21 of the second fastening member 20 locked in the temporarily engaged state is the first fastening member 10. The second fastening member 20 is rotated by pressing so as to approach. At this time, the second fastening member 20 uses the portion of the engaging head 24 that is in contact with or hooked to the first extending portion 12 of the first fastening member 10 as a fulcrum. Rotate to the center.

  As a result, the second fastening member 20 entrains the sheet edge 7 a of the second sheet member 7, and the distal end portion of the first extending portion 12 is extracted from the insertion groove portion 26 of the second fastening member 20. Thus, it can be moved toward the contact portion 25 of the second engagement portion 22. At the same time, a part of the engaging head 24 (first head 24 a) can be brought close to the opening 15 of the first fastening member 10 while being in sliding contact with the top end surface 13 c of the first protrusion 13.

  Further, by rotating the second fastening member 20 toward the first fastening member 10, the engaging head 24 is made elastically deforming at least one of the first fastening member 10 and the second fastening member 20. Can be moved over the first protrusion 13 and into the accommodating space 14, whereby the entire engaging head 24 can be easily and smoothly moved into the accommodating space 14 of the first fastening member 10. Can be inserted and fitted.

  In this case, when the engaging head 24 exceeds the first protrusion 13, at least one of the first fastening member 10 and the second fastening member 20 that are elastically deformed is elastically restored, so the second fastening member. The 20 engaging heads 24 can be hooked on the inner wall surface 13 b of the first protrusion 13.

  Moreover, when the engaging head 24 exceeds the first protrusion 13 as described above, the elastic return occurs, so that the first fastening member 10 and the second fastening member 20 partially collide, The collision can generate a small collision sound and tactile sensation. For this reason, as shown in FIG. 4, the first fastening member 10 and the second fastening member 20 are covered with the first sheet member 6 and the second sheet member 7 and cannot be seen from the outside (right side in the drawing). Even in this case, the operator can confirm that the entire engaging head 24 has been inserted into the accommodating space 14 of the first fastening member 10 by sensing a small collision sound or tactile sensation.

  Then, as described above, the entire engaging head 24 is inserted and held in the accommodating space portion 14 of the first fixing member 10, so that the first fixing member as shown in FIGS. 1 and 5. 10 and the abutting portion 25 of the second fastening member 20 are in contact with each other, and the inner wall surface 13b of the first projecting portion 13 of the first fastening member 10 and the second fastening member 10 are in contact with each other. The engaging head 24 of the landing member 20 comes into contact. Furthermore, in the case of this embodiment, the front-end | tip part of the 1st extension part 12 of the 1st fastening member 10 and the protrusion piece part 27 of the 2nd fastening member 20 can be mutually contact | abutted widely.

  In this way, the second fastening member 20 abuts the first fastening member 10 at two or more locations, so that the second fastening member 20 is brought into contact with the first fastening member 10 with an appropriate engagement force. It can be engaged (fitted) stably in this engagement state. As a result, the first fastening member 10 and the second fastening member 20 are connected, so that the sheet edge portion 7a of the second sheet member 7 is connected to the first fastening member 10 and the second fastening member 20. Along the length direction, the sheet can be continuously fixed to the sheet edge 6a of the first sheet member 6.

  Further, when the second fastening member 20 is engaged in the fully engaged state as described above, the first fastening member 10 and the second fastening member 20 that are engaged with each other are the first seat member 6 and the second fastening member 20. The tension | tensile_strength which is each pulled from the 2 sheet | seat member 7 is received. At this time, since the second sheet member 7 is fixed on the first surface 21 a of the second main body portion 21, the second fixing member 20 includes the second fixing member 20. Stress (force indicated by the second arrow 52 in FIG. 5) is applied in a direction to rotate the second fastening member 20 so that the second main body portion 21 is separated from the first fastening member 10.

  In this case, the first fastening member 10 is formed on the front end edge of the first extension portion 12, the inner wall surface 13b of the first projection portion 13, and the outer peripheral surface of the front end portion of the first extension portion 12. The second fastening member 20 can be supported by receiving the force applied from the second fastening member 20 as indicated by the third arrow 53. Thereby, it is possible to effectively prevent the second fastening member 20 from coming off from the first fastening member 10 and to stably maintain the engaged state.

  In particular, in the case of the present embodiment, the inner wall surface 13b of the first protrusion 13 is arranged with an acute inclination angle as described above with respect to the first surface 11a of the first main body 11, so that this inclination angle is, for example, Compared to a case where the angle is 90 ° or an obtuse angle, the engagement head 24 of the second fastening member 20 can be more stably supported by the inner wall surface 13b of the first protrusion 13.

  On the other hand, as shown in FIG. 1 and FIG. 5, the second fastening member 20 is attached to the first fastening member 10 from the state where the second fastening member 20 is locked to the first fastening member 10 in the fully engaged state. When removing and separating from the member 10, the operator holds the second fastening member 20, and the first extending portion 12 of the first fastening member 10 is connected to the second fastening member 20 as shown in FIG. 6. The second fastening member 20 is moved against the tension from the first sheet member 6 and the second sheet member 7 so that the second fastening member 20 is inserted into the insertion groove portion 26 so as to be separated from the abutment portion 25 and the protruding piece portion 27. Let Thereby, the position of the 2nd fastening member 20 is shifted from this engagement state.

  Subsequently, with the second fastening member 20 in a state where the first extending portion 12 of the first fastening member 10 is inserted into the insertion groove portion 26, the engagement head 24 is the first fastening member 10 of the first fastening member 10. 1 Rotate as shown by the fourth arrow 54 in FIG. 6 around the portion in contact with the extension 12. Thereby, while elastically deforming at least one of the first fastening member 10 and the second fastening member 20, the engaging head 24 is smoothly extracted from the accommodating space portion 14 of the first fastening member 10, The second fastening member 20 can be easily and smoothly detached from the first fastening member 10, and as a result, the sheet edge 7 a of the second sheet member 7 can be removed from the sheet side of the first sheet member 6. It can be separated from the edge 6a.

  As described above, in the seat fastener 1 of the present embodiment, the second engagement portion 22 of the second fastening member 20 is formed in a substantially T shape, and the insertion groove portion is formed in the second engagement portion 22. 26 is provided at a predetermined position. Accordingly, the second engaging portion 22 of the second fastening member 20 can be easily and stably attached to the first fastening member 10 while the first extending portion 12 of the first fastening member 10 is inserted into the insertion groove portion 26. The second fastening member 20 engaged with the first fastening member 10 can be easily and smoothly removed from the first fastening member 10. As a result, the operation of attaching the first sheet member 6 and the second sheet member 7 to the cushion body 5 and the operation of removing the first sheet member 6 and the second sheet member 7 from the cushion body 5 are easily and efficiently performed. Is possible.

  Further, in the seat fastening device 1 of the present embodiment, the second engagement portion 22 is formed in a substantially T shape, so that the size of the accommodation space portion 14 provided in the first fastening member 10 is, for example, It can be made smaller than the sheet fastening device 70 of Patent Document 1. Furthermore, the first extending portion 12 as a whole can be made smaller by inclining the opening 15 of the first fastening member 10 with respect to the first main body 11 as described above. Thereby, the sheet fastening device 1 can be reduced in size and weight while appropriately securing the engagement force of the second fastening member 20 with respect to the first fastening member 10, and the seat fastening device 1. The material cost can be reduced.

  The seat fastening device of the present invention is not limited to the above-described embodiment, and has various configurations as long as it has substantially the same configuration as the present invention and has the same function and effect. It can be changed. For example, a seat fastening device 2 according to a modification shown in FIG. 7 is also included in the present invention.

  In the modified sheet fastening device 2 shown in FIG. 7, the first fastening member 10a is formed by making the cross-sectional shape of the first protrusion 18 different from the sheet fastening device 1 of the above-described embodiment. In addition, although the second fastening member 20a is formed without providing the protruding piece portion 27 of the embodiment, the other points are formed in the same manner as the seat fastening device 1 of the embodiment. . For this reason, in the sheet fastener 2 of this modification, the same reference numerals are used to denote substantially the same members and parts as those of the sheet fastener 1 of the above-described embodiment, and detailed description thereof is omitted. .

The first fastening member 10a shown in FIG. 7 includes a first body part 11, a first extension part 12, a first protrusion part 18 projecting from the first surface 11a of the first body part 11, and an accommodation space. It has a portion 14 and an opening 15. In this case, the outer wall surface 18 a and the inner wall surface 18 b of the first protrusion 18 are arranged orthogonal to the first surface 11 a of the first main body 11. In the present invention, the inner wall surface 18b of the first protrusion 18 may be formed such that the angle with the first surface 11a of the first main body 11 is greater than 90 °.
The modified second fastening member 20 a has a second main body portion 21 and a second engagement portion 22, and is formed.

  According to such a modified example of the seat fastening device 2, the second fastening member 20a can be easily and stably engaged with the first fastening member 10a in the same procedure as in the above-described embodiment, The second fastening member 20a engaged with the first fastening member 10a can be easily and smoothly removed. Furthermore, it is possible to reduce the size and weight of the sheet fastening device 2 and reduce the material cost while appropriately securing the engagement force of the second fastening member 20a with respect to the first fastening member 10a.

DESCRIPTION OF SYMBOLS 1, 2 Seat fixing tool 5 Cushion body 6 1st sheet member 6a Sheet edge part 7 2nd sheet member 7a Sheet edge part 10, 10a 1st fixing member 11 1st main-body part 11a 1st surface (fixed surface) )
11b 2nd surface 12 1st extension part 13 1st projection part 13a outer wall surface 13b inner wall surface 13c top end surface 14 accommodation space part 15 opening part 15a size of opening part 18 1st projection part 18a outer wall surface 18b inner wall surface 20, 20a 2nd fastening member 21 2nd main-body part 21a 1st surface (opposite surface)
21b 2nd surface 22 2nd engaging part 23 neck 24 engaging head 24a 1st head 24b 2nd head 25 contact part 26 insertion groove part 27 protrusion part 28 positioning projection part 51 1st arrow 52 2nd Arrow 53 Third arrow 54 Fourth arrow D Groove depth dimension of the insertion groove L Length from the insertion groove of the second fastening member to the end of the engagement head on the second main body side T1 First extension T2 Thickness dimension of the tip part T2 Thickness dimension of the neck part W Groove width dimension of the insertion groove part θ Angle between the inner wall surface of the first projection part and the first surface of the first main body part

Claims (4)

The long first fastening member (10, 10a) fixed to the sheet edge (6a) of the first sheet member (6) and the sheet edge (7a) of the second sheet member (7) A long second fastening member (20, 20a) to be fixed, and the second fastening member (20, 20a) is engaged with the first fastening member (10, 10a). A sheet fastener (1, 2) capable of fastening the second sheet member (7) to the first sheet member (6),
The first fastening member (10, 10a) includes a first surface (11a) fixed to the first sheet member (6) and a second surface disposed on the opposite side of the first surface (11a). 11b) and a first main body portion (11) extending from one end of the first main body portion (11) while being bent toward the first surface (11a) of the first main body portion (11). An extension portion (12), and a first protrusion (13) protruding from the first surface (11a) of the first body portion (11),
The second fastening member (20, 20a) has a first surface (21a) facing the first fastening member (10, 10a) and a second surface disposed on the opposite side of the first surface (21a). A second body portion (21) having a surface (21b), and a bent portion extending from one end of the second body portion (21) toward the first surface (21a) of the second body portion (21). And a second engagement portion (22) having a substantially T-shaped cross section,
The first fastening member (10, 10a) is surrounded by at least the first extending portion (12) and the first protrusion (13) and the second fastening member (20, 20a) 2 formed between the accommodating space part (14) for accommodating a part of the engaging part (22), the tip part of the first extending part (12) and the first projecting part (13). An opening (15) communicating with the accommodation space (14),
The second engaging portion (22) of the second fastening member (20, 20a) is connected to the second main body portion (21) and is inclined with respect to the second main body portion (21). An extending neck portion (23), an engagement head portion (24) disposed at a distal end portion of the neck portion (23) and extending in a crossing direction with respect to the neck portion (23), and a proximal end portion of the neck portion (23) And an abutting part (25) for abutting the first extending part (12), and an insertion recessed between the abutting part (25) and the engaging head (24). A groove (26),
The tip of the first extension part (12) engages the second fastening member (20, 20a) with the first fastening member (10, 10a) through the opening (15). When being removed, it is formed so that it can be inserted into the insertion groove (26) of the second fastening member (20, 20a).
A sheet fastening device characterized by that.   In the cross section of the sheet fastener (1, 2), the groove width dimension (W) of the insertion groove part (26) is equal to the thickness dimension (T1) of the tip end part of the first extension part (12). The groove depth dimension (D) of the insertion groove part (26) is set to 10% or more and 40% or less of the thickness dimension (T2) of the neck part (23). The sheet fastener according to claim 1.   In the cross section of the first fastening member (10), the first surface (11a) of the first main body (11) and the accommodating space (14) side of the first protrusion (13). The sheet fastener according to claim 1 or 2, wherein an angle between the inner wall surface (13b) and the inner wall surface is less than 90 °.   The second fastening member (20) protrudes from at least one of the second body portion (21) and the second engagement portion (22), and the first extension together with the contact portion (25). The sheet fastening device according to any one of claims 1 to 3, further comprising a projecting piece portion (27) with which the portion (12) abuts.

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