Spray gun and method of manufacturing seat pad

Abstract

To facilitate an operation of applying paint into a groove part formed in a seat pad.SOLUTION: A spray gun 10 comprises a gun body 12 that emits a jet of paint from a nozzle 18, and a groove insertion part 24 that is provided in the gun body 12 and extends in a paint injection direction SP with respect to the nozzle 18.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a spray gun and a method for manufacturing a seat pad using the spray gun.

Background Art

[0002] In the vehicle seat pad disclosed in Patent Document 1 below, a recess is formed in the bottom surface portion of a pad body constituted by a foam. An insertion body constituted by a foam having a hardness different from that of the above-described foam is inserted into the recess. A low-friction material is applied and adhered to the side surface of the recess and the side surface of the insertion body by means such as coating or spraying. Thereby, rubbing noise is prevented.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in a foam molding die for manufacturing a seat pad of different-hardness foam in which a plurality of foams having different hardnesses are integrally foam-molded, a partition plate or the like for preventing the raw materials of different types of foams from mixing may be provided. In such a case, the formed seat pad has a configuration in which a groove portion is formed at the boundary between two foams having different hardnesses. In a vehicle seat provided with such a seat pad, the above-described groove portion is crushed by an input from a seated person or the like, so that the foams having different hardnesses rub against each other. As a result, abnormal noise may be generated due to the stick-slip phenomenon. As a countermeasure for preventing the generation of this abnormal noise, an anti-abnormal-noise agent is applied to the groove portion, but it is necessary to apply the agent while widening the groove portion, which makes the work complicated.

[0005] In view of the above facts, an object of the present invention is to obtain a spray gun and a method for manufacturing a seat pad that facilitate the operation of applying paint into a groove formed in the seat pad.

Means for Solving the Problems

[0006] The spray gun according to the first aspect includes a gun body that injects paint from a nozzle, and a groove insertion portion provided on the gun body and extending in the paint injection direction beyond the nozzle.

[0007] According to the spray gun of the first aspect, a groove insertion portion is provided on the gun body that injects paint from the nozzle. This groove insertion portion extends in the paint injection direction beyond the nozzle. Therefore, when applying paint into the groove formed in the seat pad, the groove insertion portion can be inserted into the groove to widen the groove, and then the paint can be injected from the nozzle into the groove. This makes it easier to apply paint into the groove.

[0008] The spray gun according to the second aspect is, in the first aspect, the groove insertion portion includes a first extension portion extending from the gun body in the injection direction, a second extension portion extending from the tip of the first extension portion in a direction intersecting the injection direction and arranged at a distance from the nozzle in the injection direction, and a third extension portion extending from the tip of the second extension portion in a direction opposite to the injection direction.

[0009] In the spray gun of the second aspect, the extension portion provided on the gun body and extending in the paint injection direction beyond the nozzle has the above-mentioned first extension portion, second extension portion, and third extension portion. By inserting these first extension portion, second extension portion, and third extension portion into the groove of the seat pad, the groove can be widened well in the injection direction with respect to the nozzle. As a result, it becomes even easier to apply paint into the groove.

[0010] The manufacturing method of the seat pad according to the third aspect manufactures a seat pad in which the noise prevention agent, which is the paint, is applied into the groove by inserting the groove insertion part of the spray gun according to the first aspect or the second aspect into the groove formed in the seat pad.

[0011] In the manufacturing method of the seat pad according to the third aspect, since the noise prevention agent is sprayed into the groove while inserting the groove insertion part of the spray gun into the groove formed in the seat pad, the operation of applying the noise prevention agent into the groove becomes easy.

Advantages of the Invention

[0012] As described above, according to the present invention, the operation of applying the paint into the groove formed in the seat pad becomes easy.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0014] Hereinafter, with reference to FIGS. 1 to 5, a spray gun 10 and a manufacturing method of a seat pad according to an embodiment of the present invention will be described. As shown in FIG. 1, the spray gun 10 according to the present embodiment includes a gun body 12 and a groove insertion part 24 provided on the gun body 12. The gun body 12 is, for example, a pressure-fed hand spray gun. In FIG. 1, the arrow UP indicates above the gun body 12.

[0015] At the lower end of the gun body 12, an air nipple 14 and an air volume adjusting device 16 are provided. At the upper part of the gun body 12, a paint nipple (not shown), a nozzle 18, and a paint adjustment knob 20 are provided. An air compressor is connected to the air nipple 14 via an air hose (not shown), and a paint supply tank is connected to the paint nipple via a paint hose (not shown). In this gun body 12, when the trigger 22 is pulled, the paint (here, the noise prevention agent) is sprayed in a mist form from the nozzle 18 by compressed air. Note that the gun body 12 may be a suction type or a gravity type.

[0016] The groove insertion part 24 is composed of a fixing part 26 fixed to the upper surface of the gun body 12 and a guide wire 28 extending from the fixing part 26 in the paint injection direction SP (see FIG. 1). The fixing part 26 is formed in a rectangular plate shape by a metal plate material and is overlapped on the upper surface of the gun body 12. This fixing part 26 is fixed to the gun body 12 using two bolts 29.

[0017] The guide wire 28 is formed by bending a metal round bar into a substantially U shape and extends in the injection direction SP beyond the nozzle 18. This guide wire 28 includes a first extension part 28A extending in the injection direction SP from the fixing part 26 fixed to the gun body 12, a second extension part 28B extending from the tip of the first extension part 28A in a direction intersecting the injection direction SP and arranged at a distance from the nozzle 18 in the injection direction SP, and a third extension part 28C extending from the tip of the second extension part 28B in the direction opposite to the injection direction SP (here, downward of the gun body 12). It is supported by the gun body 12 in a cantilever state. The first extension part 28A and the third extension part 28C are arranged offset in the vertical direction of the gun body 12 with respect to the nozzle 18, and the second extension part 28B faces the nozzle 18 with a space in the injection direction SP. Thereby, the noise prevention agent sprayed from the nozzle 18 reaches the variable hardness groove part 56 described later.

[0018] The first extending portion 28A and the third extending portion 28C extend linearly along the injection direction SP. The second extending portion 28B extends linearly along the vertical direction of the gun body 12. The portions between the first extending portion 28A and the second extending portion 28B and between the second extending portion 28B and the third extending portion 28C are both arc-shaped portions R that are curved in an arc shape. Note that, for example, compared with a configuration in which the second extending portion 28B is twisted by 90 degrees with respect to the vertical direction of the gun body 12, it is easier to insert the guide wire 28 into the different hardness groove portion 56 described later when the second extending portion 28B extends along the vertical direction of the gun body 12 as described above.

[0019] FIG. 2 shows a cushion pad 40 manufactured by the manufacturing method of the seat pad according to the present embodiment in a plan view. This cushion pad 40 constitutes a cushion material of a seat cushion 32 (see FIG. 3) of a vehicle seat 30 and corresponds to the "seat pad" of the present invention. A noise prevention agent is applied to this cushion pad 40 using the above spray gun 10. In FIG. 3, 38 is a frame of the seat cushion 32, 42 is a trim cover of the seat cushion 32, and B is the buttocks of the occupant.

[0020] The above cushion pad 40 is a different hardness urethane with different hardness foaming, and has a main portion 44 that supports the buttocks and thighs of the seated person from below, left and right side support portions 46 that support the buttocks and thighs of the seated person from the sides, and a rear portion 48 that connects the left and right side support portions 46 in the left-right direction behind the main portion 44. The left and right side support portions 46 and the rear portion 48 protrude above the main portion 44.

[0021] This cushion pad 40 is formed with a suspension groove portion 50 for suspending the trim cover 42 into the cushion pad 40, and sewing margin substitute groove portions 52 and 54 for accommodating the sewing margin of the trim cover 42. These suspension groove portion 50 and sewing margin substitute groove portions 52 and 54 are each open upward. The suspension groove portion 50 is formed between the main portion 44, the left and right side support portions 46, and the rear portion 48, and has a substantially U-shaped opening toward the front side in plan view. The sewing margin substitute groove portion 52 is formed between the rear end portions of the left and right side support portions 46 and the left and right end portions of the rear portion 48, respectively, extends substantially in the front-rear direction, and the front end portion communicates with the suspension groove portion 50. The sewing margin substitute groove portion 54 is formed at the rear portions of the left and right side support portions 46, respectively, extends substantially in the left-right direction, and the inner end portions in the left-right direction communicate with the suspension groove portion 50.

[0022] On the left and right side support portions 46, different hardness groove portions 56 are respectively formed. The left and right different hardness groove portions 56 each correspond to the "groove portion" in the present invention and are open upward. The left and right different hardness groove portions 56 extend in the front-rear direction near the center in the left-right direction of the left and right side support portions 46. The front end portions of the left and right different hardness groove portions 56 are bent inward in the left-right direction and communicate with the suspension groove portion 50. The rear end portions of the left and right different hardness groove portions 56 communicate with the left and right sewing margin substitute groove portions 54.

[0023] The cushion pad 40 having the above configuration is composed of a first pad portion 40A (the portion not dotted in FIG. 2) and a second pad portion 40B (the portion dotted in FIG. 2). The first pad portion 40A is composed of the portions on the left and right side support portions 46 that are forward of the left and right sewing margin substitute groove portions 52 and inward of the left and right different hardness groove portions 56 in the left-right direction, the main portion 44, and the rear portion 48. The second pad portion 40B is composed of the portions on the left and right side support portions 46 that are forward of the left and right sewing margin substitute groove portions 52 and outward of the left and right different hardness groove portions 56 in the left-right direction, and the portions on the left and right side support portions 46 that are rearward of the left and right sewing margin substitute groove portions 54.

[0024] The first pad portion 40A and the second pad portion 40B are integrally foam-molded. The hardness of the urethane foam constituting the second pad portion 40B is set higher than the hardness of the urethane foam constituting the first pad portion 40A. This enhances the support performance of the hip and thigh portions by the left and right side support portions 46. The left and right different-hardness groove portions 56 extend substantially in the front-rear direction along the boundary between the first pad portion 40A and the second pad portion 40B.

[0025] In the left and right different-hardness groove portions 56, a noise prevention agent is applied using a spray gun 10. In this spray gun 10, a groove insertion portion 24 is provided in a gun body 12 that injects the noise prevention agent from a nozzle 18. A guide wire 28 of this groove insertion portion 24 extends in the injection direction SP of the noise prevention agent from the nozzle 18. When the noise prevention agent is applied into the different-hardness groove portion 56, for example, as shown in FIG. 4, the guide wire 28 of the groove insertion portion 24 is inserted into one end portion of the different-hardness groove portion 56. Thereby, the different-hardness groove portion 56 is expanded in the injection direction SP of the noise prevention agent from the nozzle 18. In this state, the noise prevention agent is injected from the nozzle 18, and the spray gun 10 is moved to the other end side of the different-hardness groove portion 56 (see FIG. 5). In FIGS. 4 and 5, A is the arm of the operator.

[0026] By performing the application work as described above, the operator can apply the noise prevention agent into the different-hardness groove portion 56 while expanding the different-hardness groove portion 56 with the guide wire 28. This facilitates the work of applying the noise prevention agent into the different-hardness groove portion 56. Moreover, since the guide wire 28 is inserted into the different-hardness groove portion 56, the nozzle 18 is directed toward the different-hardness groove portion 56, so that the noise prevention agent is naturally injected from the nozzle 18 into the different-hardness groove portion 56 without the operator aiming at the different-hardness groove portion 56. This also facilitates the application work of the noise prevention agent.

[0027] Further, the above-described guide wire 28 has a first extension portion 28A extending from the gun body 12 in the injection direction SP, a second extension portion 28B extending from the tip of the first extension portion 28A in a direction intersecting the injection direction SP and disposed at a distance from the nozzle 18 in the injection direction SP, and a third extension portion 28C extending from the tip of the second extension portion 28B in a direction opposite to the injection direction SP. By inserting these first extension portion 28A, second extension portion 28B, and third extension portion 28C into the different hardness groove portion 56, the different hardness groove portion 56 can be well expanded in the injection direction SP with respect to the nozzle 18. As a result, the operation of applying the noise prevention agent into the different hardness groove portion 56 becomes easier. Moreover, since the portions between the first extension portion 28A and the second extension portion 28B and between the second extension portion 28B and the third extension portion 28C are both arc-shaped portions R bent in an arc shape, it is easy to insert the guide wire 28 into the different hardness groove portion 56.

[0028] In addition, in the above embodiment, the case where the fixing portion 26 of the groove insertion portion 24 is formed of a metal plate material and the guide wire 28 of the groove insertion portion 24 is formed of a metal rod material has been described, but the present invention is not limited thereto. The groove insertion portion may be formed of, for example, a press-formed metal plate material or a resin material.

[0029] Further, in the above embodiment, the groove insertion portion 24 has the first extension portion 28A, the second extension portion 28B, and the third extension portion 28C, but the present invention is not limited thereto, and the configuration of the groove insertion portion 24 can be appropriately changed. For example, the configuration in which the third extension portion 28C is omitted may be adopted.

[0030] In addition, in the above embodiment, the case where the cushion pad 40, which is the cushion material of the seat cushion 32, is the "seat pad" in the present invention has been described, but the present invention is not limited thereto, and the seat pad in the present invention may be a back pad that is the cushion material of the seat back.

[0031] In addition, the present invention can be implemented with various modifications without departing from the gist thereof. Of course, the scope of rights of the present invention is not limited to the above embodiment.

Explanation of Symbols

[0032] 10 Spray gun 12 Gun body 18 Nozzle 20 Paint adjustment knob 24 Groove insertion part 40 Cushion pad (seat pad) 56 Groove part with different hardness

Claims

1. A gun body for injecting paint from a nozzle, A groove insertion part provided on the gun body and extending in the paint injection direction from the nozzle, A spray gun comprising the above.

2. The groove insertion part is, A first extension part extending from the gun body in the injection direction, A second extension part extending from the tip of the first extension part in a direction intersecting the injection direction and arranged at a distance from the nozzle in the injection direction, A third extension part extending from the tip of the second extension part in a direction opposite to the injection direction, The spray gun according to claim 1, having the above.

3. A method for manufacturing a seat pad, in which the groove insertion part of the spray gun according to claim 1 or claim 2 is inserted into a groove formed in a seat pad, and a noise prevention agent as the paint is injected into the groove, and the seat pad with the noise prevention agent applied in the groove is manufactured.

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