JP2004167743A - Device and method for processing end of vehicle seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for processing the end of a vehicle seat by which the end of seat upholstery can be appropriately heat-welded under a simple structure, and a method for processing the end of the vehicle seat. <P>SOLUTION: This device processes the end of the vehicle seat equipped with a bottom plate 30 and upholstery 10, for covering the bottom plate 30, the end part of which is heat-welded to the back of the bottom plate 30. In addition, the device comprises a means 41 for arranging the constituent members of the vehicle seat including the bottom plate 30 and the upholstery 10; a heating means 42 for melting at least a part of the back of the bottom plate 30; an upholstery turning-in means 43 with a flexible plate-like member 43a which extends almost horizontally to the inside from the outside of the arrangement means 41 and is foldable to the back of the bottom plate 30 from a position on the outer peripheral end part of the bottom plate 30; and a contact bonding means 42 for adhesively pressing the plate-shape member 43a, the upholstery 10 and the bottom plate 30 simultaneously. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a terminal processing apparatus for a vehicle seat and a terminal processing method for a vehicle seat, and particularly to a terminal processing apparatus for a vehicle seat and a terminal processing for a vehicle seat that do not use staples for joining a skin material and a bottom plate. About the method.
[0002]
[Prior art]
As shown in FIG. 9, a vehicle seat 100 provided on a motorcycle or the like is formed by placing a cushion material 120 on a bottom plate 130 and covering the cushion material 120 with a skin material 110. The terminal portion 110 a of the skin material 110 is fixed to the back surface of the bottom plate 130 by a staple 140.
[0003]
However, when fixing the end portion of the skin material to the bottom plate with staples, it is necessary to drive the staples with a tucker while holding the skin material in an appropriate position, so skill is required to work efficiently. It had been.
[0004]
Alternatively, a method is known in which a portion on the back side of the bottom plate where the terminal portion of the skin material is disposed in an overlapping manner is heated and melted, and the terminal portion of the skin material is pressed and fixed to the heated and melted portion. I have. As described above, in manufacturing a molded product in which a predetermined member is covered with a skin material, a technique is known in which a terminal portion of the skin material 110 is folded using a clamp device 153 as shown in FIG.
[0005]
In the above-described conventional technique, the skin material 110, the cushion material 120, and the bottom plate 130 provided on the concave mold 151 are pressed by the pressing means 152, and the clamping device 153 is operated to move the terminal portion 110a of the skin material 110 to the bottom plate. It is folded into the 130 side.
[0006]
When the skin material 110 is pressed against the bottom plate 130, a frame-shaped pressing device (not shown) is lowered, and the terminal portion 110a of the skin material 110 is pressed toward the bottom plate 130 by the pressing device.
[0007]
In the technique shown in FIG. 10, since the clamp device 153 is provided so as to extend to the concave mold 151 side, there is a problem that the clamp device 153 easily interferes with the crimping unit, and when it does, the clamp unit 153 is damaged. . For this reason, a method of pressing the skin material 110 and the bottom plate 130 by the clamp device 153 itself may be considered, but in this case, there is a disadvantage that a more complicated configuration is required.
[0008]
Alternatively, a configuration is known in which a terminal portion of a skin material provided in a concave shape is folded toward a bottom plate using a slide device using an air cylinder (for example, see Patent Document 1).
[0009]
[Patent Document 1]
JP-A-6-23841 (page 3)
[0010]
[Problems to be solved by the invention]
In the technique of Patent Document 1, in order to avoid interference between the crimping means and the folding means, teeth are formed on each of the crimping means and the folding means, and are configured to mesh with each other. However, there was a possibility that the cost would increase due to the complicated structure. Also, if the crimping means and the folding means interfere with each other, there is a possibility that the teeth are damaged.
[0011]
An object of the present invention is to provide a vehicle seat terminal processing apparatus and a vehicle seat terminal processing method capable of suitably performing a terminal treatment of a skin material by heat welding with a simple configuration.
[0012]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a terminal processing apparatus for a vehicle seat, comprising: a bottom plate; and a skin material that covers the bottom plate, and a terminal portion of the skin material is on a back side of the bottom plate. A terminal treatment device for a vehicle seat heat-sealed to the vehicle, comprising: means for arranging components of the vehicle seat including the bottom plate and a skin material; and heating for melting at least a part of a back surface side of the bottom plate. Means, a flexible plate extending substantially horizontally from the outside to the inside of the arranging means, and capable of being bent from the position of the outer peripheral end of the bottom plate to the back side of the bottom plate. This problem is solved by providing a skin material folding means having a member, and a crimping means for simultaneously crimping the plate-like member, the skin material, and the bottom plate.
[0013]
As described above, in the vehicle seat terminal processing apparatus of the present invention, in the terminal processing of the vehicle seat in which the terminal portion of the skin material is heat-welded to the back surface side of the bottom plate, the constituent members of the vehicle seat are provided. A flexible plate-like member extending substantially horizontally from the outside to the inside of the arranging means and bendable from the position of the outer peripheral end of the bottom plate to the back side of the bottom plate. When the skin material and the bottom plate are crimped, it is configured so that the skin material is crimped together with the plate-shaped member, so the folding and crimping of the skin material can be performed at the same time, and heat welding can be performed efficiently. It is possible to do.
[0014]
In addition, since the plate-shaped member is in surface contact with the skin material and pressure-bonded to the bottom plate, the skin material can be joined to the bottom plate while equally dividing the slack wrinkles generated at the end portion of the skin material. . Further, the skin material is adhered to the bottom plate while the skin material extends inward from the outer peripheral end side of the bottom plate while the plate member is in surface contact with the skin material, so that the skin material can be accurately folded. In this manner, it is possible to manufacture a vehicle seat having a good appearance.
[0015]
The plate-shaped member is formed of a resin having flexibility, cushioning property, and heat resistance, and specifically, is preferably formed of a polyester-based thermoplastic elastomer or silicon rubber. As described above, since the plate-shaped member has flexibility and cushioning property, the plate-shaped member does not break due to interference with the crimping means, and the plate-shaped member adheres to the skin material when pressed by the crimping means. Then, the skin material can be brought into close contact with the bottom plate.
[0016]
The terminal treatment method for a vehicle seat according to the present invention is a terminal treatment method for a vehicle seat including a bottom plate and a skin material covering the bottom plate, wherein a surface of a predetermined portion on the back side of the bottom plate is heated by heating means. A first step of heating and melting by heating, a second step of separating the heating means from the bottom plate, and a terminal area of the skin material and a member covering the terminal area are overlapped and crimped on the molten predetermined portion. A third step of applying pressure by means, a fourth step of separating the pressure bonding means from the skin material and a member covering a terminal area of the skin material, and solidifying a welded portion between the skin material and the bottom plate. And a fifth step of integrating the skin material and the bottom plate.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings. The members, arrangements, and the like described below do not limit the present invention, but can be variously modified within the scope of the present invention.
[0018]
1 to 8 show an embodiment of the present invention. FIG. 1 is a sectional view of a main part of a vehicle seat according to the present invention, and FIGS. 2 to 4 show operating states of a terminal processing device according to the present invention. 5 and 6 are top views of the terminal processing device, FIG. 7 is a perspective view of a skin material folding means, and FIG. 8 is an explanatory view showing an example of a heating means.
[0019]
In this example, the vehicle seat 1 will be described based on a motorcycle seat. The vehicle seat 1 includes not only motorcycles, that is, those used for land-based motorcycles and scooters, but also seats for snowmobiles and personal watercrafts, and also includes three-wheeled buggies, straddle-type vehicles, and construction equipment. Vehicle seats for seats shall be included.
[0020]
As shown in FIG. 1, the vehicle seat 1 of the present embodiment includes a skin material 10, a cushion material 20, and a bottom plate 30.
The skin material 10 is made of a material that can be thermally processed and has water resistance. For example, PVC (polyvinyl chloride resin) is used. The skin material 10 is not limited to the above PVC, and other materials can be selected except for a fluororesin, a silicon resin, and the like, which have low surface activity and are not suitable for heat welding.
[0021]
The cushion material 20 is formed of a flexible foam material, for example, urethane foam, PP (polypropylene) foam, PE (polyethylene) foam, and is placed on the bottom plate 30.
[0022]
The cushion material 20 is covered with the skin material 10. Note that the cushion material 20 and the skin material 10 may be formed as separate bodies, or the cushion material 20 and the skin material 10 may be integrally formed.
[0023]
The bottom plate 30 is formed of, for example, a thermoplastic resin such as PP (polypropylene) or an ABS resin. In addition, you may use the bottom plate 30 shape | molded using PPG (polypropylene with glass fiber) and PPT (polypropylene with filler) which are fiber reinforced resins.
[0024]
Next, the terminal processing device 40 of the vehicle seat 1 of the present embodiment will be described. In the vehicle seat 1 of this example, the bottom plate 30 is heated and melted, and the terminal portion of the skin material 10 is disposed on the heated portion of the bottom plate 30 while pressing, and the skin material 10 is attached to the bottom plate 30 by heat welding. It is what you wear.
[0025]
The terminal processing device 40 of the present example is configured to include a concave mold 41 as an arrangement unit for disposing the constituent members of the vehicle seat, a heating unit 42, a skin material folding unit 43, and a pressure bonding unit. .
[0026]
The skin material 10, the cushion material 20, and the bottom plate 30 are disposed in the concave mold 41. The concave mold 41 is, for example, a vacuum mold. In the case of a vacuum mold, the skin material 10 is evacuated and formed into a predetermined shape.
[0027]
As the heating means 42, for example, a hot air generator, a hot plate heater, an impulse heater, or the like is used. The hot-air welding device includes a hot-air blowing nozzle and a hot-air source connected to the nozzle via a duct. During operation of the hot-air welding device, hot air sent from a hot-air source blows out of a nozzle through a duct. Then, the hot air blown out from the nozzle is applied to a predetermined portion of the bottom plate 30 to perform heating.
[0028]
The hot plate heater has a built-in heating unit in a metal having high thermal conductivity, and is formed of, for example, aluminum. The built-in heating unit generates heat, thereby heating an object in contact with the hot plate heater.
[0029]
The impulse heater is formed of a ribbon-shaped conductive heating wire, and is configured to rapidly generate heat by receiving a current from the impulse power supply unit. At this time, as shown in FIG. 8, it is preferable to use a heating device including an impulse heater provided with a plurality of folded portions.
[0030]
8 includes an impulse heater 51, a heater fixed substrate 52 formed along the peripheral shape of the bottom plate 30, and an air cylinder 53 for moving the heater fixed substrate 52 vertically through a mounting frame 54. When the air cylinder 53 is operated, the heater fixed substrate 52 is lowered to the position of the bottom plate 30, and the peripheral edge of the bottom plate 30 on the back surface side is heated.
[0031]
The heating device 50 shown in FIG. 8 has a configuration in which the folded portion 51a is provided in the impulse heater 51, and disperses and absorbs distortion when the impulse heater 51 is bent at the folded portion 51a and the amount of elongation due to thermal expansion. , And the bottom plate 30 can be suitably heated.
[0032]
In this example, the mounting frame 54 is configured to be moved up and down by an air cylinder. The air cylinder is connected to an air supply source (not shown), and is operated by air supply to extend and retract the rod, so that the mounting frame 54 can be moved up and down. In this embodiment, the mounting frame 54 is operated by an air cylinder. However, the present invention is not limited to this, and other driving mechanisms such as a hydraulic cylinder may be used.
[0033]
A plurality of skin material folding means 43 are provided around the concave mold 41. The skin material folding means 43 includes a plate member 43a and an air cylinder 43d that slides the plate member 43a via a holding member 43f. A plurality of air cylinders 43d are provided around the concave mold 41, and a plurality of plate members 43a are provided on a holding member 43f connected to each air cylinder 43d. The plate-shaped member 43a is disposed such that the flat portion of the plate-shaped member 43a faces the installation surface side of the terminal processing device 40.
[0034]
The plate member 43a is formed of a resin having flexibility, cushioning properties, and heat resistance, and is formed of, for example, a polyester-based thermoplastic elastomer or silicon rubber. As the polyester-based thermoplastic elastomer, for example, Hytrel (registered trademark: manufactured by DuPont) is used.
[0035]
As shown in FIGS. 2 to 4, a groove 43b is formed in each plate member 43a. The groove 43b is formed in a portion located at the outer peripheral end of the bottom plate 30 when the plate member 43a extends toward the concave mold 41 side. When a pressure is applied to the plate member 43a from above, the plate member 43a is bent from the groove 43b and tilted toward the bottom plate 30. 2 to 4, illustration of the holding member 43f is omitted in order to clearly show the state of the plate member 43a.
[0036]
Before the skin material folding means 43 starts the folding operation of the skin material 10, the front end 43 c of the plate member 43 a is located at the edge of the concave mold 41 and is in contact with the skin material 10. Then, when the folding operation starts, the rod 43e of the air cylinder 43d protrudes, and the plate member 43a slides horizontally from the outside to the inside of the concave mold 41. Then, the terminal portion 10a of the skin material 10 is pushed by the plate-like member 43a, turned over, and folded inward of the concave mold 41.
[0037]
Further, pressure is applied to the plate member 43a from above, the plate member 43a is bent from the groove 43b, and the skin material 10 is sandwiched between the bottom plate 30 and the skin material 10 is brought into close contact with the bottom plate 30. . When the pressure is released, the plate member 43a returns to its original state due to elasticity.
[0038]
As described above, according to the skin material folding means 43 of the present embodiment, the end portion 10a of the skin material 10 is folded back by sliding the plate member 43a from the outside, and the plate member 43a remains on the bottom together with the skin material 10 as it is. Since the skin material 10 is pressed against the bottom plate 30 by being pressed toward the plate 30, the folding and crimping of the skin material terminal portion 10a can be performed in a series of operations, and the terminal processing is efficiently performed. It is possible to do it. In addition, since the skin material 10 is pressed to the bottom plate 30 as it is from the folded state, the skin material 10 can be securely bonded to the bottom plate 30.
[0039]
In addition, since the plate-like member 43a is pressure-bonded to the bottom plate 30 while being in surface contact with the terminal portion 10a of the skin material 10, the folded wrinkles generated at the terminal portion 10a of the skin material 10 are divided equally into the bottom plate 30. It becomes possible to adhere.
[0040]
The heating means 42 is also used as the pressure bonding means in this example. After the heating means 42 heats the bottom plate 30, as shown in FIG. 3, the temperature is gradually lowered by being once pulled up and stopped in operation. As described above, in a state where the temperature is stopped, the heating unit 42 is used as a pressing unit.
[0041]
As shown in FIG. 4, a heating means 42 having a lowered temperature is pressed against a welding portion between the bottom plate 30 and the skin material 10. Note that the heating unit 42 may not be also used as the pressing unit, and may be provided with a separate pressing unit. Further, a cooling means for cooling a joint between the bottom plate 30 and the skin material 10 at the time of press bonding may be provided.
[0042]
Next, a method for performing terminal processing of the vehicle seat 1 using the terminal processing device 40 will be described. The terminal treatment step of the vehicle seat 1 includes a first step of heating the surface of a predetermined portion on the back surface side of the bottom plate 30 by the heating means 42, a second step of separating the heating means 42 from the bottom plate 30, The third operation of operating the skin material folding means 43 to fold the end portion 10a of the skin material 10 and operating the pressure bonding means to crimp the skin material 10 together with the plate member 43a of the skin material folding means 43 to the bottom plate 30. A fourth step of separating the pressure bonding means from the skin material 10 and the plate member 43a, and a fourth step of solidifying the welded portions of the bottom plate 30 and the skin material 10 to integrate the skin material 10 and the bottom plate 30. 5 steps.
[0043]
The operation of the terminal processing device 40 is performed by automatic control or manual control. In the case of automatic control, the heating state is monitored by a temperature sensor, the processing time is measured by a timer, and each unit is automatically operated based on information from these sensors and the timer.
[0044]
In the case of manual control, an operation panel (not shown) is provided in the vicinity of the terminal processing device 40, and by turning on a plurality of switches of the operation panel, the operation of each means is performed.
[0045]
Before the first step, the skin material 10, the cushion material 20, and the bottom plate 30 are assembled. In this example, the skin material 10, the cushion material 20, and the bottom plate 30 are assembled by disposing the cushion material 20 and the bottom plate 30 in the concave mold 41 in which the skin material 10 is previously arranged. After the cushion material 20 and the bottom plate 30 placed on the workbench or the like are covered with the skin material 10, these assembled bodies may be arranged in the concave mold 41.
In the terminal processing, the assembly is pressed by a pressing unit as necessary.
[0046]
In the first step, the heating means 42 is lowered toward the bottom plate 30 provided in the concave mold 41, and the heating means 42 is brought into contact with the peripheral edge 31 on the back surface side of the bottom plate 30 to perform heating. Is The surface of the bottom plate 30 is melted by heating.
In the second step, the heating means 42 is separated from the bottom plate 30.
[0047]
In the third step, the skin material folding means 43 is operated, the plate member 43a of the skin material folding means 43 is slid from the outside to the inside of the concave mold 41, and the end portion 10a of the skin material 10 is turned to the bottom plate 30 side. And then folded.
[0048]
Further, in the third step, the pressing means (in this example, the heating means 42 after cooling) is operated, and the pressing means presses the plate member 43a of the skin material folding means 43 from above. The plate member 43a is bent from the groove 43b by pressing, and is pressed against the bottom plate 30 while holding the skin material 10. Thereby, the terminal portion 10a of the skin material 10 is welded to the portion of the bottom plate 30 where the resin is melted.
[0049]
In the fourth step, the crimping means rises, and the crimping means is separated from the skin material 10 and the plate-like member 43a covering the skin material.
In the fifth step, the heat-welded portion is solidified, and the bottom plate 30 and the end portion 10a of the skin material 10 are bonded and fixed. At this time, cold air may be blown toward the welding portion between the bottom plate 30 and the terminal portion 10a of the skin material 10 so that the cooling is performed more quickly.
[0050]
In the above-described embodiment, the example in which the terminal portion 10a of the skin material 10 is joined to the bottom plate 30 of the motorcycle seat is not limited to the motorcycle seat as long as it has the same configuration. The present invention is also applicable to other interior parts such as a seat bottom plate, a door, and a roof.
[0051]
【The invention's effect】
As described above, according to the present invention, the terminal portion of the skin material is folded into the back surface of the bottom plate in the vehicle seat manufacturing device in which the terminal region of the skin material is fixed to the bottom plate without using staples. As a means, using a plate-shaped member having flexibility, cushioning properties, and heat resistance, while folding the skin material with this plate-shaped member, and pressing the skin material together with the skin material to the bottom plate, and bringing the skin material into close contact with the bottom plate I have. For this reason, the terminal portion of the skin material is uniformly adhered to the bottom plate, and it is possible to manufacture a vehicle seat having a good appearance.
[0052]
Further, the structure of the skin material folding means is simpler than in the past, and the cost can be reduced. In addition, since the plate-shaped member having flexibility, cushioning properties, and heat resistance is in contact with the skin material, there is no destruction due to interference with the pressure bonding means, and the skin material can be suitably subjected to the terminal treatment. .
[Brief description of the drawings]
FIG. 1 is a sectional view of a main part of a vehicle seat according to the present invention.
FIG. 2 is an explanatory diagram showing an operation state of the terminal processing device according to the present invention.
FIG. 3 is an explanatory diagram showing an operation state of the terminal processing device according to the present invention.
FIG. 4 is an explanatory diagram showing an operation state of the terminal processing device according to the present invention.
FIG. 5 is a top view of the terminal processing device.
FIG. 6 is a top view of the terminal processing device.
FIG. 7 is a perspective view of a skin material folding means.
FIG. 8 is an explanatory diagram illustrating an example of a heating unit.
FIG. 9 is an explanatory diagram showing a conventional example.
FIG. 10 is an explanatory diagram showing a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Vehicle seat 10 Skin material 10a Terminal part 20 Cushion material 30 Bottom plate 31 Peripheral edge part 40 Terminal processing device 41 Recessed mold 42 Heating means 43 Skin material folding means 43a Plate member 43b Groove part 43c Tip part 43d of plate member Air cylinder 43e Rod 43f Holding member 44a Rod

Claims (3)

A terminal treatment device for a vehicle seat, comprising a bottom plate and a skin material covering the bottom plate, and a terminal portion of the skin material being thermally welded to a back surface side of the bottom plate,
Means for disposing components of the vehicle seat including the bottom plate and the skin material,
Heating means for melting at least a part of the bottom surface of the bottom plate,
A flexible plate-like member extending substantially horizontally from the outside to the inside of the arranging means and capable of being bent from the position of the outer peripheral end of the bottom plate to the back side of the bottom plate. Skin material folding means,
A terminal treatment device for a vehicle seat, comprising: a crimping means for simultaneously crimping the plate-like member, the skin material, and the bottom plate. 2. The terminal treatment device for a vehicle seat according to claim 1, wherein the plate-shaped member is made of a polyester-based thermoplastic elastomer or silicon rubber. A terminal treatment method for a vehicle seat including a bottom plate and a skin material covering the bottom plate,
A first step of heating and melting a surface of a predetermined portion on the back side of the bottom plate by a heating unit;
A second step of separating the heating means from the bottom plate;
A third step of overlapping the terminal region of the skin material and the member covering the terminal region on the melted predetermined portion and pressing the member with a crimping unit,
A fourth step of separating the crimping means from the skin material and a member covering a terminal region of the skin material;
A fifth step of solidifying a welded portion between the skin material and the bottom plate to integrate the skin material with the bottom plate, and a fifth step of processing the terminal of a vehicle seat.

Images