Buffer body for vehicle seat

Abstract

The invention provides a cushion body of a vehicle seat, which can be placed and fixed on a plurality of types of storage battery cases with different upper surface shapes. The cushion pad (10) can be attached to a first battery case (4) or a second battery case (5) placed and fixed on a floor (F). The cushion pad (10) has a shape of a back surface (10b) in which the shape of a first upper surface portion (4a) and the shape of a second upper surface portion (5a) coincide with each other when the first battery case (4) or the second battery case (5) is mounted and fixed to the floor (F). The second upper surface portion (5a) is placed in contact with either the shape of the first upper surface portion (4a) or the shape of the second upper surface portion (5a) without interfering with both the shape of the first upper surface portion (4a) and the shape of the second upper surface portion (5a).

Description

Technical Field

[0001] The present invention relates to a cushioning body for a vehicle seat, and more particularly to a cushioning body for a vehicle seat placed on a battery case provided on a floor. Background Art

[0002] Among automobile seats, there are automobile seats in which a cushioning body is mounted and installed on a battery case mounted on a floor. In the automobile seat described in Patent Document 1, a cushioning body is mounted on a battery case mounted and installed on a rear seat as a bench seat.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2007-186200 Summary of the invention

[0006] Problems to be solved by the invention

[0007] In the rear seat described in Patent Document 1, when there are multiple types of battery cases with different top surface shapes, multiple types of cushion bodies need to be prepared to match the back surface shapes of the cushion bodies of the seat cushions. This results in an increase in the number of component types.

[0008] In view of such a problem, an object of the present invention is to provide a cushioning body for a vehicle seat that can be mounted and fixed on a plurality of types of battery cases having different upper surface shapes.

[0009] Means for solving problems

[0010] The first invention of the present invention is a buffer body for a seat of a vehicle, which can be installed on a plurality of battery shells placed and fixed on a floor, and is characterized in that the buffer body has a lower surface shape as follows: when the shapes of the upper surfaces of the plurality of battery shells are overlapped when the plurality of battery shells are placed and fixed on the floor respectively, the buffer body is placed in contact with a part of the shapes of the upper surfaces of all the battery shells without interfering with the shapes of the upper surfaces of all the battery shells.

[0011] According to the first invention, in the cushion body of the vehicle seat, in a state where the shapes of the upper surfaces of the plurality of battery cases mounted and fixed on the floor overlap, the shape of the lower surface of the cushion body does not interfere with the shapes of the upper surfaces of all the battery cases and is mounted in contact with a part of the shapes of the upper surfaces of all the battery cases. Thus, only one type of cushion body of the vehicle seat can be provided to mount and fix on the upper surfaces of the plurality of battery cases, thereby suppressing an increase in the number of types of components.

[0012] The second invention of the present invention is characterized in that, in the above-mentioned first invention, the above-mentioned buffer body has: a first buffer body layer on the seating surface side; and a second buffer body layer, which is arranged in layers on the opposite side of the seating surface of the first buffer body layer and is harder than the above-mentioned first buffer body layer, and at least the second buffer body layer is carried in contact with the above-mentioned battery case.

[0013] According to the second invention, the second buffer body layer, which is harder than the first buffer body layer, is supported by contact with the upper surface of the battery case. Therefore, even if a slight gap is formed between the upper surface of the battery case, the seat surface of the first buffer body layer can be prevented from being greatly depressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a plan view of a seat cushion in a rear seat for an automobile according to an embodiment of the present invention.

[0015] Figure 2 So Figure 1 A cross-sectional view is shown along line II-II.

[0016] Figure 3 So Figure 1 A cross-sectional view is shown along line III-III.

[0017] Figure 4 So Figure 1 A cross-sectional view is shown along line IV-IV.

[0018] Figure 5 So Figure 1 A cross-sectional view is shown along line VV.

[0019] Figure 6 So Figure 1 A cross-sectional view taken along line VI-VI is shown. DETAILED DESCRIPTION

[0020] Figure 1 to Figure 6 1 shows an embodiment of the present invention. This embodiment is an example of applying the present invention to a cushion pad 10 of a seat cushion 2 in a rear seat 1 for an automobile. In each figure, arrows are used to indicate the directions when the rear seat 1 for an automobile is installed on the floor F of the automobile. In the following description, the directions are described based on the directions. Here, the rear seat 1 for an automobile corresponds to the technical solution. .

[0021] The cushion pad 10 of this embodiment is used as a seat cushion 2 of a rear seat 1 for a three-person vehicle, and has a length in the left-right direction substantially equal to the width of the vehicle compartment. Figure 2~Figure 4As shown, a seat back 3 as a backrest is installed on the rear end side of the seat cushion 2, and the seat cushion 2 and the seat back 3 constitute the rear seat 1 for automobile. .

[0022] like Figure 2~Figure 6 As shown, the seat cushion 2 is fixed in a state of being placed on a first battery case 4 or a second battery case 5 fixed on a floor F constituting a part of the vehicle body. The first battery case 4 is a case covering a nickel battery, and the second battery case 5 is a case covering a lithium battery. Nickel batteries or lithium batteries are installed according to the model of the vehicle. Here, the first battery case 4 and the second battery case 5 respectively correspond to the technical solution. .

[0023] The first battery case 4 and the second battery case 5 are roughly rectangular when viewed from above, and their front-to-back lengths and left-to-right lengths are roughly the same. In addition, the first battery case 4 and the second battery case 5 are roughly rectangular when viewed from the front. The shape of the first upper surface portion 4a of the first battery case 4 is different from the shape of the second upper surface portion 5a of the second battery case 5. Specifically, Figure 2 As shown in FIG. 1 , the cross section of the first upper surface portion 4a is composed of a flat surface portion 4a1 extending substantially horizontally on the front side and an inclined surface portion 4a2 extending downward and rearward on the rear side. The ratio of the front-to-back dimensions of the flat surface portion 4a1 and the inclined surface portion 4a2 is approximately 3:1. Figure 3 and Figure 4 As shown, the inclined surface 4a also has a portion formed in a stepped shape in the middle portion in the left-right direction, but there is no portion protruding upward from the inclined surface 4a. Figure 2~Figure 4 As shown, the second upper surface portion 5a has a protruding surface portion 5a1 protruding upward in the middle portion of the cross section in the front-to-back direction, and is provided with a front curved surface portion 5a2 that smoothly bends and extends forward and downward from the protruding surface portion 5a1 in the front, and a rear curved surface portion 5a3 that smoothly bends and extends rearward and downward from the protruding surface portion 5a1 in the rear. When the cross section of the first upper surface portion 4a is overlapped with the cross section of the second upper surface portion 5a, the maximum difference in the vertical dimension between the flat surface portion 4a1 and the protruding surface portion 5a1 is about 15 mm, and the maximum difference in the vertical dimension between the inclined surface portion 4a2 and the rear curved surface portion 5a3 is about 10 mm. Here, the first upper surface portion 4a and the second upper surface portion 5a respectively correspond to the technical solution. .

[0024] The seat cushion 2 is formed by covering a cushion pad 10 as a cushion member embedded in a cushion frame (not shown) constituting a frame with a cushion cover 6 as a surface material. The seat cushion 2 has a pair of left and right seat portions 2A and a central seat portion 2B disposed between the left and right seat portions 2A, and is formed in a bilaterally symmetrical shape.

[0025] like Figure 2~Figure 6 As shown in FIG. 1 , the cushion pad 10 has a surface 10a as the upper side of the seated person and a back surface 10b as the lower side opposite to the seated person. The cushion pad 10 is formed by connecting a first cushion layer 11 as a foamed body of polyurethane resin and a second cushion layer 12 as a bead foamed body of olefin resin into one body. The first cushion layer 11 is formed of polyurethane foam formed by foaming polyurethane resin, and its density is set to, for example, 0.045 0.005g / cm 3 The first cushion layer 11 has a surface portion 11a on the side of the seat surface of the cushion pad 10 and a back portion 11b on the side opposite to the seat surface. The surface portion 11a of the first cushion layer 11 is consistent with the surface 10a of the cushion pad 10. The back portion 11b of the first cushion layer 11 constitutes a part of the back side 10b of the cushion pad 10. The second cushion layer 12 is a bead foaming molding of an olefin resin such as polypropylene or polyethylene, and its density is set to 0.03g / cm 3 Around. The second cushion layer 12 is formed to have a lower density than the first cushion layer 11 and a higher elastic modulus than the first cushion layer 11. The second cushion layer 12 has a surface portion 12a which is a surface on the seating surface side of the cushion pad 10 and a surface portion 12b which is a surface on the opposite side to the seating surface. The surface portion 12a of the second cushion layer 12 is a surface that abuts and is connected to a portion of the back portion 11b of the first cushion layer 11. The back portion 12b of the second cushion layer 12 constitutes a portion of the back side 10b of the cushion pad 10. The cushion pad 10 is obtained by arranging a second cushion layer 12 that has been pre-bead-foamed in a mold having a cavity in the shape of the cushion pad 10, injecting a foaming raw material of a polyurethane resin, and integrally foaming the first cushion layer 11. Here, the back side 10b corresponds to the technical solution. In addition, the first cushion layer 11 and the second cushion layer 12 are respectively equivalent to the technical solution and .

[0026] like Figure 2~Figure 6 As shown, when the cushion pad 10 is placed on the first battery case 4 or the second battery case 5, the back surface 10b is formed into a shape that abuts against one of the first upper surface portion 4a and the second upper surface portion 5a of the first battery case 4 without interfering with the second upper surface portion 5a of the second battery case 5. Specifically, Figure 2~Figure 4As shown, the front end side portion of the back side 10b of the cushion pad 10 is supported by two pipe members 7 fixed to the floor F and extending in the left-right direction. The front portion of the center portion of the back side 10b of the cushion pad 10 in the front-back direction is supported by contacting with the protruding surface portion 5a of the second battery case 5, and is arranged at a maximum distance of about 15 mm upward relative to the flat surface portion 4a of the first battery case 4. The rear portion of the center portion of the back side 10b of the cushion pad 10 in the front-back direction is supported by contacting with the inclined surface portion 4a2 of the first battery case 4, and is arranged at a maximum distance of about 10 mm upward relative to the rear curved surface portion 5a3 of the second battery case 5. The rear end side portion of the back side 10b of the cushion pad 10 is supported by the pipe member 8 fixed to the floor F and extending in the left-right direction and the floor F.

[0027] like Figure 2~Figure 6 As shown, when the cushion pad 10 is placed on the first battery case 4, the rear portion of the center of the back side 10b of the cushion pad 10 in the front-back direction is supported by contacting with the inclined surface 4a of the first battery case 4. The front portion of the center of the back side 10b of the cushion pad 10 in the front-back direction is arranged at a maximum distance of about 15 mm upward relative to the flat surface 4a of the first battery case 4, but the distance is small and the second cushion layer 12 with a high elastic modulus is arranged facing each other, so the deformation of the cushion pad 10 in the vertical direction can be suppressed to a level without problems. When the cushion pad 10 is placed on the second battery case 5, the front portion of the center of the back side 10b of the cushion pad 10 in the front-back direction is supported by contacting with the protruding surface 5a of the second battery case 5. The rear portion of the center portion in the front-to-back direction of the back side 10b of the cushion pad 10 is arranged at a maximum distance of about 10 mm upward relative to the rear curved surface portion 5a of the second battery case 5, but the distance is small and the second cushion layer 12 with a high elastic modulus is arranged facing each other, so the deformation of the cushion pad 10 in the up-down direction can be suppressed to a level without problems.

[0028] The present embodiment constructed as described above has the following effects. The back surface 10b of the cushion pad 10 is shaped such that when approaching the first upper surface portion 4a of the first battery case 4 mounted and fixed on the floor F or the second upper surface portion 5a of the second battery case 5 mounted and fixed on the floor F, the back surface 10b of the cushion pad 10 is supported by contacting with one of a part of the first upper surface portion 4a and a part of the second upper surface portion 5a without interfering with the first upper surface portion 4a and the second upper surface portion 5a. Thus, only one type of cushion pad 10 can be provided to mount and fix on the first battery case 4 mounted and fixed on the floor F or on the second battery case 5 mounted and fixed on the floor F, thereby suppressing an increase in the number of parts.

[0029] In addition, the cushion pad 10 has a first cushion layer 11 as the upper seat surface side and a second cushion layer 12 as the lower seat surface opposite side which is harder than the first cushion layer 11, and at least the back surface 12b of the second cushion layer 12 is placed in contact with the first upper surface portion 4a or the second upper surface portion 5a. Thus, the cushion pad 10 is supported by the second cushion layer 12 which is harder than the first cushion layer 11 being in contact with the first upper surface portion 4a or the second upper surface portion 5a, so even if a slight gap is generated between the back surface 10b and the first upper surface portion 4a or the second upper surface portion 5a, it is possible to prevent the surface 10a from being greatly depressed.

[0030] Although specific embodiments have been described above, the present invention is not limited to these appearances and structures, and various changes, additions, and deletions can be made within the scope of the present invention. For example, the following substances can be mentioned.

[0031] 1. In the above embodiment, the present invention is applied to the cushion pad 10 of the rear seat 1 for a vehicle as a bench seat for three persons. However, the present invention is not limited to a bench seat for three persons and can also be applied to a cushion pad of a vehicle seat for one person.

[0032] 2. In the above embodiment, the second cushion layer 12 is attached to the first cushion layer 11 by integrally foaming the second cushion layer 12 during foam molding of the first cushion layer 11, but the second cushion layer 12 may be attached by bonding or the like.

[0033] 3. In the above-mentioned embodiment, the present invention is applied to a seat of an automobile, but it may also be applied to a seat mounted on an airplane, a ship, a train, or the like.

[0034] Description of Reference Numerals

[0035] 1 Car rear seat (transportation seat)

[0036] 2 Seat Cushions

[0037] 4First battery housing (battery housing)

[0038] 4a First upper surface portion (upper surface)

[0039] 4a1 Flat face

[0040] 4a2 tilted face

[0041] 5 Second battery housing (battery housing)

[0042] 5a Second upper surface portion (upper surface)

[0043] 5a1 highlight the face

[0044] 5a2 Front curved face

[0045] 5a3 Back curved face

[0046] 10 cushion (buffer)

[0047] 10a Surface

[0048] 10b Back side (lower surface)

[0049] 11. First cushion layer (first buffer layer)

[0050] 11a Surface

[0051] 11b Back side

[0052] 12. Second cushion layer (second buffer layer)

[0053] 12a Surface

[0054] 12b Back side

[0055] F Floor

Claims

1. A cushioning body for a vehicle seat, which can be mounted on a plurality of battery housings mounted and fixed on a floor, wherein: The cushioning body of the vehicle seat has a lower surface shape in which the shapes of the upper surfaces of the multiple battery shells overlap when the multiple battery shells are placed and fixed on the floor respectively, and the cushioning body abuts against a part of the shape of the upper surfaces of all the battery shells without interfering with the shapes of the upper surfaces of all the battery shells.

2. The cushioning body of a vehicle seat according to claim 1, wherein: The buffer body comprises: a first buffer body layer on the seat surface side; and a second buffer body layer, which is arranged in a layered manner on the opposite side of the seat surface of the first buffer body layer and is harder than the first buffer body layer. At least the second buffer body layer is placed in contact with the battery case.

Images