JP5185577B2 - Vehicle seat fixture and vehicle seat cushion - Google Patents

Description

  The present invention relates to a vehicle seat fixture and a vehicle seat cushion, and more particularly to a vehicle rear seat fixture and a vehicle rear seat cushion.

  Conventionally, as a pad for a vehicle seat cushion, a flexible urethane foam pad member obtained by foaming a polyurethane raw material using a mold has been used. When forming this pad member, a frame formed by bending a metal wire or the like into a frame shape is inserted, and the frame is embedded and integrally formed. Further, a U-shaped hook for fixing the seat cushion to the floor panel of the vehicle body is provided so as to protrude downward by welding to a predetermined portion of the frame. The seat cushion is fixed to the floor panel of the vehicle by elastically fitting a hook into a receiving member provided on the floor panel, and the seat cushion is removable (see Patent Document 1). ).

Moreover, although it is related to the front seat cushion for vehicles, a fixed clip having an arcuate locking part made by press-molding an elastic metal plate material is spot welded to the shape-retaining wire, and the wire is embedded. A technique of integrally foaming the pad member is disclosed (see Patent Document 2). The seat cushion is fixed to the frame provided on the floor of the vehicle by engaging the fixing clip with a stopper portion of the frame using its elastic deformation. Further, when the seat cushion is removed from the frame, the engagement is released by bending the stopper portion inward from the back side of the seat cushion. When the work from the back side is possible, the work from the back side is usually impossible for the rear seat, and therefore it is generally limited to the front seat.
Japanese Utility Model Publication No. 62-17961 (see FIG. 2) Japanese Utility Model Publication No. 3-122741 (see FIGS. 2 and 3)

  However, in the conventional technique disclosed in Patent Document 1, the seat cushion is fixed to the floor surface by elastically fitting a hook into a receiving member provided on the floor panel. Uneasy of coming off due to unexpected external force cannot be wiped out. In addition, a dedicated receiver must be installed on the floor panel, resulting in an increase in the number of parts.

  In that respect, since the engagement is released only by intentionally bending the stopper portion of the frame in the fixing method using the fixing clip disclosed in Patent Document 2, the anxiety is extremely small. However, when used as a rear seat cushion, no method has been found for removal from the floor.

  In any of the techniques disclosed in any of the patent documents, a metal frame is embedded in a pad member, and a seat cushion is fixed to a floor surface using a hook or a fixing clip fixed to the frame. In general, the polyurethane raw material exhibits high adhesiveness for the metal forming the frame. Therefore, when the pad member is disposed of when the used seat cushion is disassembled, the separation of the metal frame and the urethane foam is an operation that requires a great number of man-hours, which is a problem.

  The present invention has been made paying attention to such a problem, and the object of the present invention is to allow easy removal of the seat cushion despite the fact that the seat cushion is securely fixed to the floor panel. It is to provide a seat fixture.

  It is another object of the present invention to provide a synthetic resin sheet fixture that can be embedded in a pad member regardless of the presence or absence of a metal frame and can reduce the weight of the pad member.

In order to solve the above-mentioned problem, the invention of the seat fixture according to claim 1 is a fixture that is formed entirely of synthetic resin and fixes the seat cushion to the floor of the vehicle body. A plate-shaped movable piece having a base on the distal end side is provided at the distal end portion of the pillar portion forming the base, and the movable piece has a claw portion that is hooked to the lower surface of the floor panel that forms a part of the floor surface. The movable piece has a portion other than the base portion spaced apart from the pillar portion through a slit, and is extended in a direction opposite to the tip side from the position where the claw portion is formed. A flange portion is formed on the outer peripheral surface of the pillar portion at an interval corresponding to the thickness of the floor panel from the claw portion in the axial direction of the pillar portion, and the flange portion and the pillar A guide rib is provided between the outer peripheral surface of the portion and the pillar. A plate-like anchor portion embedded in the pad of the seat cushion is provided at a base end portion of the portion, a through hole is provided in the anchor portion, and the pillar portion is provided between the anchor portion and the flange portion. A lid plate portion extending in a direction orthogonal to the axial direction is formed on the outer peripheral surface of the first plate .

According to a second aspect of the invention, the sheet fastener according to claim 1, wherein the pillar portion, the closure plate is provided for closing the across aperture therein is formed in a cylindrical shape It is characterized by that.

In the invention of the vehicle seat cushion according to claim 3 , the pillar portion of the seat fixture according to claim 1 or 2 is exposed at least at the movable piece and the tip portion of the pad of the seat cushion. It is characterized by being embedded as such.

According to a fourth aspect of the present invention, in the vehicle seat cushion according to the third aspect , the seat cushion is a seat cushion of a rear seat of a vehicle, and the movable piece is disposed so as to face the front of the vehicle. It is characterized by this.

According to a fifth aspect of the present invention, in the vehicle seat cushion according to the third or fourth aspect , a guide groove for guiding a tool to the pressure receiving portion of the movable piece is formed at the bottom of the pad of the seat cushion. It is characterized by being.

(Function)
The sheet fixture of the present invention is entirely formed of a synthetic resin, and a plate-like movable piece having a base portion on the distal end side is provided at the distal end portion of the pillar portion constituting the base. The movable piece is provided with a claw portion that is hooked to the lower surface of the floor panel that forms a part of the floor surface of the vehicle body. Further, the movable piece has a portion other than the base portion separated from the pillar portion via a slit. Therefore, when the seat cushion is fixed to the floor surface of the vehicle body using the seat fixing tool, the claw portion is hidden under the floor panel, but the pressure receiving portion formed to extend before the claw portion is the floor panel. Protrusively higher. If the pressure receiving part is pushed using a tool or the like in a direction in which the engagement between the claw part and the floor panel is released, the movable piece in which only the base part is connected to the pillar part will bend, and the claw part and the floor panel will be bent. Engagement is easily disengaged. Further, if the pressure receiving part is formed by extending the tip of the claw part of the movable piece, the nail that is an action point that exists between the base part that is a fulcrum and the pressure receiving part that is a force point by pressing the pressure receiving part. The part is more easily disengaged from the floor panel.

  ADVANTAGE OF THE INVENTION According to this invention, although implement | achieving reliable fixation with respect to the floor panel of a seat cushion, the seat fixing tool which can be removed easily, and the vehicle seat cushion in which a part of the seat fixing tool was embedded Can be provided. In addition, it is possible to provide a synthetic resin sheet fixture that can be used by being embedded in a pad member regardless of the presence or absence of a metal frame.

(First embodiment)
Hereinafter, an embodiment of a seat fixture and a vehicle seat cushion embodying the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the vehicle seat cushion 21 of this embodiment includes a pad 22 made of urethane foam, and a skin 23 covered on the outer surface of the pad 22. Although not shown, the skin 23 is a two-layer laminate composed of a skin material made of fabric or leather on the front side and a slab made of urethane foam or the like laminated on the back side.

  Concave portions 22 a are formed at two locations on the left and right sides of the bottom front edge of the pad 22. At the position of the inner bottom surface of these recesses 22a, a sheet fixture 24 made of a synthetic resin, for example, a general olefin-based (polypropylene or the like) synthetic resin is embedded in the pad 22 at the upper end portion which is the base end portion. ing. Between the recess 22a and the bottom front end of the pad 22, a guide groove 22b for guiding the tool to the pressure receiving portion 20 of the movable piece 35 described later is formed.

  A sheet auxiliary fixture 25 made of synthetic resin, for example, polypropylene, is embedded at the lower end of the rear portion of the pad 22 at the front end, which is the base end. As shown in FIG. 4, the sheet auxiliary fixture 25 is formed in a reverse channel shape having an open bottom surface. A plurality of through holes 26 are formed in the base end portion of the sheet auxiliary fixture 25. And when the base end part of the sheet | seat auxiliary | assistant fixing tool 25 is embed | buried under the rear part of the pad 22, as shown in FIG. 2, the urethane foam of the pad 22 approachs into each through-hole 26. As shown in FIG. By this approach, the seat auxiliary fixture 25 is secured to the pad 22 to prevent it from coming off.

  As shown in FIGS. 2 and 3, when the vehicle seat cushion 21 is placed on the floor panel 27 of the vehicle body, the distal end portion of each seat fixture 24 serves as a latching portion on the floor panel 27. It is fitted in the fixing hole 28. By this fitting, the front portion of the vehicle seat cushion 21 is fixedly held to the floor panel 27. At the same time, when the seat auxiliary fixture 25 is pressed by the seat back 29, the lift of the rear portion of the vehicle seat cushion 21 is suppressed. Reference numeral 27a denotes a carpet laid on the floor panel 27.

Next, the configuration of the seat fixture 24 and the configuration of the parts related thereto will be described in detail.
As shown in FIGS. 5 to 8, the sheet fixture 24 has a square cylindrical pillar portion 31 that is open at both ends and embedded in the pad 22 at the base end portion and forms the base of the sheet fixture 24. Is provided. A plate-like anchor portion 32 extending in a direction orthogonal to the extending direction of the pillar portion 31 is integrally formed on the base end edge of the pillar portion 31. A plurality of through holes 33 are formed in the anchor portion 32. In the state where the base end portion of the pillar portion 31 of the seat fixture 24 is embedded in the bottom portion of the pad 22, as shown in FIG. 3, the anchor portion 32 is a substantially horizontal surface in the urethane foam of the pad 22. While being embedded so as to be located inside, the urethane foam enters each through hole 33. Therefore, in the embedded state of the anchor portion 32, the anchor effect by the anchor portion 32 is exhibited, and the pillar portion 31 of the sheet fixture 24 is firmly fixed to the pad 22 so as not to come off.

  As shown in FIGS. 3 to 8, a movable piece having a base portion 35 a on the distal end side of the pillar portion 31 by forming a substantially inverted U-shaped slit 34 on the front wall of the distal end portion of the pillar portion 31. 35 is cut out. A claw portion 36 protrudes from the outer surface of the movable piece 35, and a guide slope 36a is formed at the lower portion thereof. The movable piece 35 extends beyond the claw portion 36 (in the direction opposite to the tip side), and the pressure receiving portion 20 is formed in the extended portion. As shown in FIG. 8, above the claw portion 36, the movable piece 35 of the pillar portion 31 is removed so as to correspond to the claw portion 36 with a predetermined interval L in the axial direction of the pillar portion 31. A flange portion 37 that is parallel to the anchor portion 32 is integrally formed on the outer peripheral surface of the portion. The predetermined interval L corresponds to the thickness of the floor panel 27. The flange portion 37 has a smaller area than the anchor portion 32. Further, a plurality of guide ribs 38 having slopes 38 a are integrally formed between the lower surface of the flange portion 37 and the outer peripheral surface of the pillar portion 31. The guide rib 38 is configured such that when the tip end of the pillar portion 31 of the seat fixture 24 is inserted into the fixing hole 28 of the floor panel 27, the inclined surface 38 a comes into contact with and slides on the inner edge portion of the fixing hole 28. The portion can be guided to a predetermined position of the fixing hole 28. Then, as shown in FIG. 3, the vehicle seat cushion 21 is placed on the floor panel 27, and the tip of the pillar portion 31 in each seat fixture 24 is inserted into the fixing hole 28 of the floor panel 27. At this time, the guide slope 36a contacts and slides on the inner edge of the fixing hole 28. For this reason, the movable piece 35 is deformed against its own elasticity by the action of the guide slope 36a, and the passage through the fixing hole 28 of the seat fixing tool 24 is allowed. Next, the flange portion 37 is brought into contact with the upper surface of the floor panel 27 at the periphery of the opening of the fixing hole 28, and the claw portion 36 is detachably hooked on the lower surface of the floor panel 27 by the elasticity of the movable piece 35. . Therefore, in this state, the floor panel 27 is sandwiched between the claw portion 36 and the flange portion 37.

  As shown in FIGS. 3 to 8, a lid plate portion 39 that is parallel to the anchor portion 32 is formed integrally with the pillar portion 31 between the anchor portion 32 and the claw portion 36. The lid plate portion 39 is smaller than the anchor portion 32 and has a larger area than the flange portion 37. Three substantially semicircular positioning recesses 40 are formed on the outer peripheral edge of the cover plate portion 39. The positioning recess 40 is formed at two positions on the left and right of the front edge of the lid plate portion 39 and at one position in the center of the rear edge. The positioning recess 40 is disposed asymmetrically on the opposite side of the lid plate portion 39. A closing plate portion 39a is formed on the inner peripheral surface of the pillar portion 31 so as to correspond to the cover plate portion 39, and the inside of the pillar portion 31 is partitioned and closed between the openings at both ends by the closing plate portion 39a. . When the sheet fixture 24 is embedded in the pad 22 and integrally molded, as shown in FIGS. 9 to 12, when the sheet fixture 24 is set on the molding surface 41a of the molding die 41 described later, The positioning recess 40 on the lid plate 39 is engaged with the three positioning pins 43 on the molding surface 41a. In this state, the opening of the recess 42 of the molding die 41 is closed by the lid plate portion 39 and the closing plate portion 39a, and the inside of the pillar portion 31 is inside the recess 42, that is, the tip portion side of the pillar portion 31. Inflow of urethane foam into the water is suppressed.

  Next, the structure and molding method of a mold for embedding and molding the sheet fixture 24 in the pad 22 will be described. The sheet fixture 24 is generally set on the upper mold of the foaming mold, but is drawn upside down in each figure for easy understanding.

  As shown in FIG. 9, in the molding surface 41 a of the molding die 41, a recess 42 for setting the sheet fixture 24 is formed at a location where the recess 22 a of the pad 22 is molded. Three positioning pins 43 that can be engaged with the positioning recesses 40 on the lid plate portion 39 of the sheet fixture 24 are formed in a protruding manner on the molding surface 41 a of the molding die 41 at the opening periphery of the recess 42. .

  Then, when the sheet fixture 24 is set in the recess 42 of the molding die 41, the tip end portion of the pillar portion 31 of the sheet fixture 24 is inserted into the recess 42 as shown in FIG. 10. Thereafter, when the positioning recesses 40 on the sheet fixture 24 side are engaged with the positioning pins 43 on the molding surface 41a side, as shown in FIG. It is latched and held at a predetermined set position protruding inward. In this state, the opening end portion of the recess 42 of the molding die 41 is closed by the lid plate portion 39 of the sheet fixture 24.

  In this case, the three positioning recesses 40 and the corresponding positioning pins 43 are arranged at two places on the front side and one place on the rear side, and are asymmetrically arranged in the front and rear. For this reason, the sheet fixture 24 is positioned in a predetermined direction (a direction in which the claw portion 36 of the movable piece 35 faces the front of the vehicle) in the recess 42 of the molding die 41, and the sheet fixture 24 is positioned with respect to the recess 42. It is possible to prevent 24 from being set in the wrong mounting direction. Further, since the sheet fixing tool 24 is locked to the molding surface 41a of the molding die 41 by three-point support by the engagement of the three positioning pins 43 and the positioning recess 40, the sheet fixing tool 24 is fixed to the predetermined position. Can be held in a stable state at the set position.

  In this state, after the molding surface 41a of the molding die 41 is closed, as shown by a chain line in FIG. 11, urethane foam is foamed in the molding die 41 and the pad 22 is molded. In the recessed portion 22 a of the pad 22, the base end portion of the pillar portion 31 of the sheet fixture 24 is embedded in the pad 22. In this case, the opening end portion of the recess 42 on the molding die 41 side is closed by the lid plate portion 39 of the sheet fixture 24, and the inside of the pillar portion 31 is closed by the closing plate portion 39a. There is no possibility that the urethane foam will flow into the tip end side of the pillar portion 31 of the sheet fixture 24. Therefore, as shown in FIG. 12, the sheet fixture 24 can be embedded and formed with respect to the pad 22 in a state where the tip end portion of the pillar portion 31 protrudes outward from the bottom portion of the pad 22. In this state, one side surface of the cover plate portion 39 forms a part of the inner bottom surface of the recess 22 a of the pad 22. Here, in order to mold the recess 22a of the pad 22, the pad recess molding surface of the molding die 41 is convex. And the guide groove 22b is formed in a pad by continuing this convex shape to a pad front-end part.

  At the time of molding, as shown in FIG. 12, the anchor portion 32 of the sheet fixture 24 is embedded in the urethane foam of the pad 22 and molded with the urethane foam entering each through hole 33. Is done. For this reason, the pillar part 31 of the sheet fixing tool 24 can be firmly secured to the pad 22 to prevent it from coming off.

  Thereafter, as shown in FIG. 12, when the pad 22 is removed from the molding surface 41a, the positioning recesses 40 on the sheet fixture 24 side are detached from the positioning pins 43 on the molding surface 41a side. In this case, since each positioning recess 40 is formed in a semicircular shape, for example, even when the molding die 41 is demolded and rotated around the lower position in FIG. Escape from inside to escape. Therefore, each positioning recess 40 can be easily detached from each positioning pin 43.

  Incidentally, in the case where a plurality of positioning holes are formed on the sheet fixture 24 side instead of the positioning recesses 40 and these positioning holes are engaged with the positioning pins 43 on the molding surface 41a side, Due to the interference between the positioning holes and the positioning pins 43, it is difficult to detach the positioning holes from the positioning pins 43 when the molding die 41 is turned off. Then, there is a possibility that the sheet fixture 24 made of synthetic resin may be damaged by the twisting with the positioning pins 43 at the time of detachment. In order to prevent this, it is necessary to make the positioning hole larger than the diameter of the positioning pin 43, but if this is done, the positional accuracy of the sheet fixture 24 cannot be ensured.

  The skin 23 is set in a molding die 41 (lower mold), and the pad 22 is molded in the skin 23 so that the skin 23 is attached to the outer surface of the pad 22 or the pad You may make it cover the pad 22 after shaping | molding of 22.

  In the vehicle seat cushion 21 thus manufactured, when the seat fixing tool 24 is inserted into the fixing hole 28 of the floor panel 27, the flange portion 37 comes into contact with the upper surface of the floor panel 27 and the movable piece 35. The claw portion 36 is engaged with the lower surface of the floor panel 27, and the floor panel 27 is sandwiched between the flange portion 37 and the claw portion 36. Therefore, in this state, the vehicle seat cushion 21 is set at a predetermined position in the passenger compartment.

  When the vehicle seat cushion 21 is removed from the floor panel 27 for cleaning the vehicle seat cushion 21, a tool such as a driver is inserted into the guide groove 22 b formed in the pad 22 to If the pressure receiving portion 20 is pushed and bent against its elasticity, the claw portion 36 is detached from the lower surface of the floor panel 27. At this time, by pressing the pressure receiving portion 20, the claw portion 36, which is an action point between the base portion 35a that is the fulcrum and the pressure receiving portion 20 that is the power point, releases the engagement with the floor panel with a relatively small force. It is burned. Therefore, if the seat fixing tool 24 is pulled out from the fixing hole 28 in this state, the vehicle seat cushion 21 can be removed from the floor panel 27.

In this embodiment, the following effects can be obtained.
(1) A movable piece 35 is formed on the front wall of the distal end portion of the pillar portion 31. The movable piece 35 has a base portion 35a on the distal end side and a portion other than the base portion 35a is separated from the front wall by a slit. On the outer surface of the movable piece 35, a claw portion 36 is formed to project. Further, the movable piece 35 is extended before the claw portion 36 to form the pressure receiving portion 20. Therefore, when the vehicle seat cushion 21 is fixed to the floor panel 27 of the vehicle body using the seat fixture 24, the pressure receiving portion 20 of the movable piece 35 is positioned above the floor panel 27. Therefore, when removing the seat fixture 24 from the floor panel 27, the movable piece 35 can be bent with a relatively small force by pressing the pressure receiving unit 20 using a tool.

  (2) The anchor portion 32 formed at the base end portion of the pillar portion 31 is embedded in the bottom portion of the pad 22 of the vehicle seat cushion 21. A claw portion 36 that can be locked in the fixing hole 28 of the floor panel 27 is formed at the tip of the pillar portion 31. For this reason, by inserting the sheet fixture 24 into the fixing hole 28, it is not necessary to provide a receiving member made of synthetic resin or the like on the floor panel 27 side, and the number of parts can be reduced.

(3) Since it is not necessary to embed a metal frame wire in the pad 22, the weight of the entire vehicle seat cushion 21 can be reduced.
(4) If the sheet fixture 24 is made of a general olefin resin such as polypropylene, the sheet fixture 24 can be easily peeled from the pad 22 made of urethane foam. Accordingly, when the pad 22 is disposed of, the separation process is facilitated, and the labor required for the disposal process can be reduced.

  (5) Since the anchor portion 32 is formed in a plate shape extending in a direction orthogonal to the extending direction of the pillar portion 31 and the through hole 33 is formed in the anchor portion 32, the anchor portion 32 has an effective anchor effect. Demonstrate. For this reason, the sheet fixture 24 can be fixed to the pad 22 with an appropriate strength.

  (6) Between the anchor part 32 and the nail | claw part 36, the cover part 39 extended in the direction orthogonal to the extension direction is formed in the pillar part 31. As shown in FIG. For this reason, when the pad 22 is molded, the cover plate portion 39 closes the recess 42 of the molding die 41. For this reason, the front-end | tip part of the seat fixing tool 24 is made to protrude from the bottom face of the pad 22, without being embedded in the pad 22, and the fixing function of the vehicle seat cushion 21 can be exhibited.

  (7) A flange portion 37 is formed between the claw portion 36 and the lid plate portion 39 with an interval L corresponding to the thickness of the floor panel 27. For this reason, since the flange portion 37 abuts on the upper surface of the floor panel 27 and the floor panel 27 is sandwiched between the flange portion 37 and the claw portion 36, the seat fixture 24 is firmly attached to the floor panel 27. Can be fixed.

  (8) A guide rib 38 is provided between the flange portion 37 and the outer peripheral surface of the pillar portion 31. Therefore, when the front end portion of the sheet fixture 24 is inserted into the fixing hole 28 of the floor panel 27, the inclined surface 38 a of the guide rib 38 abuts and slides on the inner edge portion of the fixing hole 28, so that the sheet fixing device 24 is fixed to the fixing hole 28. Can be guided to a predetermined position.

  (9) The pillar portion 31 is formed in a cylindrical shape, and a closing plate portion 39a for blocking between the openings at both ends is formed in the pillar portion 31. Therefore, the sheet fixture 24 can be reduced in weight, and urethane foam can be prevented from leaking from the inside of the pillar portion 31 to the outside when the pad 22 is formed.

(10) Since the closing plate portion 39 a is provided at a position corresponding to the lid plate portion 39, the strength of the pillar portion 31 can be increased by cooperation with the lid plate portion 39.
(11) By forming the slit 34 in the wall portion of the pillar portion 31, the movable piece 35 having the claw portion 36 is formed, and the closing plate portion 39 a is disposed on the anchor portion 32 side with respect to the slit 34. For this reason, even if the movable piece 35 is formed by the slit 34, the urethane foam can be prevented from leaking from the slit 34 when the pad 22 is formed.

  (12) Since the positioning recess 40 is formed on the outer peripheral edge of the lid plate portion 39, the positioning recess 40 and the positioning pin 43 are engaged with each other with respect to the predetermined position of the molding die 41. It can be accurately positioned using.

(13) Since the positioning recess 40 is formed asymmetrically at the two outer peripheral edges of the cover plate portion 39 facing each other, it is possible to prevent a mistake in the mounting direction of the sheet fixture 24 in advance.
(14) A recess 22a is formed at the bottom of the pad 22, and a sheet fixture 24 is provided at the recess 22a. For this reason, even if the cover plate part 39 is exposed on the inner bottom surface of the recess 22a, the cover plate part 39 can be prevented from coming into contact with the floor panel 27, and the cover plate part 39 is cracked by contact with the floor panel 27. Etc. can be prevented.

  (15) A guide groove 22b continuous from the front end to the recess 22a is provided at the bottom of the pad 22. Since the tool inserted by the guide groove 22b is guided, the tool can be easily brought into contact with the pressure receiving portion 20.

(Second Embodiment)
Next, a second embodiment of the sheet fixture embodying the present invention will be described with reference to FIGS. In addition, since 2nd Embodiment is a structure different only in having changed so that the cover plate part 39 and the closing board part 39a may not be provided in the sheet fixing tool 24 of 1st Embodiment, it is the detail about the same part. The detailed explanation is omitted.

  As shown in FIGS. 13 to 15, urethane foam flows into the pillar portion 31 of the seat fixture 50 of the present embodiment when the seat cushion 21 is integrally foam-molded by being set in the recess 42 of the molding die 41. The cover plate part 39 and the closing plate part 39a for not performing are not provided. Therefore, in order to integrally form the sheet fixing member 50 so as to be embedded in the pad 22 with its tip portion exposed, it is necessary to use the sealing material 51 as shown in FIGS. Any material can be used as the sealing material 51 as long as it is an elastic body that is non-adhesive or difficult to adhere to a polyurethane raw material, such as silicon rubber. Prior to setting to the molding die 41, a sealing material 51 is attached to a required portion of the sheet fixing tool 50, and the sheet fixing tool 50 to which the sealing material 51 is attached is attached to the molding die as shown in FIG. If set in the recess 42 of 41, the polyurethane raw material does not enter the recess 42 ahead of the sealing material 51.

  Positioning of the sheet fixture 50 with respect to the molding die 41 is performed by fitting the inner peripheral surface of the pillar portion 31 of the sheet fixture 50 to the positioning pin 52 erected on the bottom of the recess 42. Sealing between the positioning pin 52 and the inner peripheral surface of the pillar portion 31 is performed as necessary. Even if a thin burr is entered, there is no functional problem for the sheet fixture 50. As a matter of course, the surface of the positioning pin 52 requires a treatment such as application of a release agent. Positioning related to the directionality of the sheet fixture 50 is performed using positioning ribs 53 provided in the recess 42. Even if the seat fixture 50 is set in the recess 42 in the wrong direction, the guide rib 38 and the positioning rib 53 interfere with each other, and the seat fixture 50 reaches the bottom of the recess 42. It will never be inserted.

  The seal material 51 is removed from the sheet fixture 50 and reused when the pad 22 is removed. Although the attachment and detachment of the sealing material 51 with respect to the sheet fixture 50 is time-consuming, there is an advantage that the mold structure for molding the sheet fixture 50 can be simplified and the mold manufacturing cost can be saved, and the total cost is necessarily increased. Is not limited.

Therefore, according to the second embodiment, in addition to the effects described in the first embodiment, the following effects can be obtained.
(16) The seat fixture 50 is not provided with the cover plate portion 39 and the closing plate portion 39a, and the sealing material 51 is used instead. The sealing material 51 prevents the polyurethane raw material from entering the recess 42 in which the sheet fixture 50 is set. Therefore, the structure of the mold for molding the sheet fixture 50 does not become complicated, so that the mold production cost can be reduced.

(Third embodiment)
Next, a third embodiment of the sheet fixture embodying the present invention will be described with reference to FIGS. In the third embodiment, the sheet fixture 24 of the first embodiment and the sheet fixture 50 of the second embodiment are integrally molded products of synthetic resin, whereas the sheet fixture 60 is composed of two molded products. It is different that it was changed to be an assembly. Therefore, detailed description of similar parts is omitted.

  As shown in FIG. 18, the seat fixture 60 of the present embodiment is configured such that the pillar portion 31 of the seat fixture 50 is divided and can be fitted and assembled to each other, and an upper half body 61 and a lower half body 62. It consists of. The upper half body 61 and the lower half body 62 are engaged with each other by hooking a claw portion 64 a of the lower half body 62 on a claw receiving portion 65 of the upper half body 61. This fitting assembly is performed by inserting the pillar portion 67 of the lower half body 62 into the inside of the pillar portion 69 of the upper half body 61 embedded in the pad 22.

  As shown in FIG. 19A, the upper half 61 is composed of a plate-like anchor portion 32 and a pillar portion 69 that is externally fitted to the lower half 62. A claw receiving portion 65 on which a claw portion 64a of the lower half 62 is hooked is formed at a predetermined portion of the pillar portion 69. As shown in FIGS. 19B and 20, the lower half 62 does not have the closing plate portion 39a provided in the seat fixture 24, but does not have the cover plate portion 39 at all. A portion of the stepped portion 63 that receives and positions the lower end of the half 61 is left. The claw portion 64a is formed on an upper portion of a latching piece 64 provided in a part of the pillar portion 67 fitted inside the pillar portion 69 of the upper half 61 and separated by a slit 68. It is provided at two locations on the opposite side of the portion 69. Therefore, when the pillar part 67 is inserted into the pillar part 69, the latching piece 64 can be easily bent, and when the claw part 64a reaches the position where it faces the claw receiving part 65, the claw part 64a is Appropriately hooked to the portion 65.

  The molding of the seat cushion 21 will be described. When the seat fixture 60 is integrally molded in the pad 22 in an embedded state, not the assembled seat fixture 60 but only the upper half 61 is set in the molding die 41 and the seat cushion 21 is foam-molded. In the set, a pin (not shown) having substantially the same shape as the inner peripheral surface of the pillar portion 69 is erected so as to protrude from the molding surface 41a, and the pillar portion 69 is externally fitted to the pin. This is done by bringing the tip 66 into contact with the inner bottom surface of the molding surface 41a. In the upper half 61 embedded in the pad 22, the outer peripheral surfaces of the anchor portion 32 and the pillar portion 69 are covered with foam. After forming the seat cushion 21, the lower half 62 is assembled to the upper half 61. At this time, even if the claw receiving portion 65 is filled with the foam, the adhesive force between the foam and the wall surface of the claw receiving portion 65 is not strong, so that the claw portion 64a is assembled when the upper half 61 and the lower half 62 are assembled. Will push away the foam, and the foam will not obstruct the hooking of the claw portion 64a.

Therefore, according to the third embodiment, the following effects can be obtained in addition to the effects described in the first and second embodiments.
(17) The seat fixture 60 is an assembly composed of the upper half 61 and the lower half 62, and the structure of the upper half 61 is simplified. Therefore, the structure of the molding die 41 for setting the upper half body 61 becomes very simple, so that the upper half body 61 can be easily set and the manufacturing cost of the molding die 41 can be reduced.

(Example of change)
In addition, you may change this embodiment as follows.
The guide groove 22b for guiding the tool to the pressure receiving portion 20 of the movable piece 35 is formed between the recess 22a and the bottom front end of the pad 22, but the guide groove 22b has a lateral width or vertical width that allows a driver to be inserted. It may be a slit. Further, the guide groove 22b itself may not be formed. This is because when there is no guide groove 22b, a part of the front bottom portion of the pad 22 can be pushed up to insert the tool.
In the seat fixture 50 and the seat fixture 60, each anchor portion 32 is configured to fully open the inside of the pillar portion 31 and the inside of the pillar portion 69, but a part of the inside of the pillar portion 31 is opened. As described above, the anchor portion 32 may extend inside the pillar portion 31. At that time, if the height of the pins of the mold for positioning the pillar portion 31 and the pillar portion 69 is appropriately lowered, the polyurethane raw material enters the pillar portion 31 and the pillar portion 69 and fills with foam. Therefore, the anchor effect of the anchor part 32 is enhanced, and the fixing force of the seat fixing tool 50 and the sheet fixing tool 60 to the pad 22 is strengthened.
-Although the pillar part 31 and the pillar part 69 are formed in the square cylinder shape, it may be formed in another polygonal cylinder shape such as a circular cylinder shape or a hexagonal cylinder shape other than a square shape instead of the square cylinder shape. Good.

The perspective view which shows the seat cushion for vehicles provided with the seat fixing tool of 1st Embodiment. The side view shown as a partial cross section of the vehicle seat cushion of FIG. The fragmentary sectional view which shows the fixed state of the vehicle seat cushion with respect to a floor panel. The perspective view which shows the seat press provided in the seat cushion for vehicles. The perspective view which shows the sheet | seat fixing tool of 1st Embodiment seeing from an upper front side. The perspective view which shows the same sheet fixing tool seeing from a lower back side. The perspective view which shows the sheet fixing tool seeing from the lower front side. Sectional drawing of the sheet fixing tool. The perspective view which shows a part of shaping | molding die which shape | molds the pad of a vehicle seat cushion. The fragmentary sectional view which shows the condition at the time of setting a sheet | seat fixing tool to the same shaping | molding die. The fragmentary sectional view which shows the state which set the sheet fixing tool to the same shaping | molding die. The partial cross section figure which shows the condition which removes the pad which embed | buried the sheet fixture from a shaping | molding die. The perspective view which shows the sheet | seat fixing tool of 2nd Embodiment seeing from a lower back side. The perspective view which shows the sheet fixing tool seeing from the lower front side. Sectional drawing of the sheet fixing tool. The partial sectional view which shows the state which set the sheet fixing tool to the shaping | molding die. The partial cross section figure which shows the condition which removes the pad which embeds the sheet fixing tool from the mold. Sectional drawing of the sheet fixing tool of 3rd Embodiment. (A) is sectional drawing which shows the upper half of the sheet fixing tool, (b) is sectional drawing which shows the lower half of the sheet fixing tool. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 20 ... Pressure-receiving part, 21 ... Seat cushion for vehicles, 22 ... Pad, 22b ... Guide groove, 24, 50, 60 ... Seat fixing tool, 27 ... Floor panel, 31 ... Pillar part, 32 ... Anchor part, 34 ... Slit, 35 ... movable piece, 35a ... base part, 36 ... claw part, 37 ... flange part, 38 ... guide rib, 39 ... lid plate part, 39a ... closing plate part

Claims (5)

A plate-shaped movable body that is entirely formed of synthetic resin and is used to fix the seat cushion to the floor of the vehicle body, and has a base on the tip side at the tip of the pillar portion that forms the base of the fixture. A piece is provided, and the movable piece is provided with a claw portion that is hooked to the lower surface of the floor panel that forms a part of the floor surface, and the movable piece has a portion other than the base portion and the pillar portion. It is spaced apart through a slit and is extended in the direction opposite to the tip side from the position where the claw portion is formed to form a pressure receiving portion ,
A flange portion is formed on the outer peripheral surface of the pillar portion, with an interval corresponding to the thickness of the floor panel from the claw portion in the axial direction of the pillar portion,
A guide rib is provided between the flange portion and the outer peripheral surface of the pillar portion,
At the base end portion of the pillar portion, a plate-like anchor portion embedded in the pad of the seat cushion is provided, and a through hole is provided in the anchor portion,
Between the said anchor part and a flange part, the cover plate part extended in the direction orthogonal to the axial direction is formed in the outer peripheral surface of the said pillar part, The sheet | seat fixing tool characterized by the above-mentioned. The seat fixture according to claim 1, wherein the pillar portion is formed in a cylindrical shape, and a closing plate portion for closing between the openings at both ends is provided in the pillar portion. 3. A vehicle seat cushion, wherein the pillar portion of the seat fixture according to claim 1 or 2 is embedded in a bottom portion of a pad of the seat cushion so that at least the movable piece and the tip end portion are exposed. . The vehicle seat cushion according to claim 3, wherein the seat cushion is a seat cushion of a rear seat of a vehicle, and the movable piece is disposed so as to face a front portion of the vehicle. The vehicle seat cushion according to claim 3 or 4, wherein a guide groove for guiding a tool to the pressure receiving portion of the movable piece is formed at a bottom portion of the pad of the seat cushion.

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