Valve unit mounting structure

Abstract

In the mounting structure for the valve unit to the base member, the structure appropriately allows for deflection of the base member while appropriately dissipating the force that the valve unit may experience due to such deflection. [Solution] A mounting structure for a valve unit for supplying air to an object to be supplied with air, provided on a vehicle seat, is disclosed, comprising: a support portion provided on a base member of the vehicle seat that receives the load from the seated occupant over a surface area; and a supported portion provided on the valve unit and supported by the support portion in a manner that is displaceable relative to the base member, wherein the support portion has a contact support portion that abuts against the side of the supported portion facing the basic surface of the base member, and a spring portion that applies an elastic force to the supported portion toward the basic surface in a first direction perpendicular to the basic surface.

Description

Technical Field

[0001] The present disclosure relates to an attachment structure of a valve unit to a vehicle seat.

Background Art

[0002] An air supply device housed in a seat back of a vehicle seat is known. This type of air supply device includes an air bag (bladder) that expands or contracts as an air supply target. The air supply device adjusts the support mode of the user's waist or the like sitting on the vehicle seat by expanding or contracting the air bag.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, the vehicle seat includes a base member such as a lumbar base, and by supporting the components related to the air supply device on the base member, it is possible to incorporate the air supply device in the vehicle seat. The base member is configured to flex according to the posture and movement of the occupant. In the prior art as described above, the attachment structure of the components related to the air supply device to the base member does not have a configuration that appropriately allows the flexing of the base member while appropriately releasing the force that can be received due to such flexing.

[0005] Therefore, on one side, the present disclosure aims to appropriately allow the flexing of the base member while appropriately releasing the force that the valve unit can receive due to such flexing in the attachment structure of the valve unit to the base member.

Means for Solving the Problems

[0006] In one aspect, the mounting structure for a valve unit for supplying air to an object to be supplied with air, which is provided on the vehicle seat, is a mounting structure for the vehicle seat. A support part provided on the base member of a vehicle seat that receives the load from the seated occupant over a surface area, The valve unit comprises a supported portion that is provided on the valve unit and is supported by the support portion in a manner that is displaceable with respect to the base member, The aforementioned support portion is A contact support portion that abuts against the side of the supported portion facing the basic surface of the base member, A mounting structure is provided, which has a spring portion that applies an elastic force to the supported portion in a first direction perpendicular to the basic surface and toward the basic surface. [Effects of the Invention]

[0007] In one aspect, according to this disclosure, in a mounting structure for a valve unit to a base member, it is possible to appropriately allow deflection of the base member while appropriately dissipating the force that the valve unit may experience due to such deflection. [Brief explanation of the drawing]

[0008] [Figure 1] This is a perspective view showing a schematic of the internal configuration of the back of a vehicle seat to which this embodiment can be applied. [Figure 2] This is a perspective view (part 1) of the mounting structure of the valve unit to the vehicle seat. [Figure 3] This is a perspective view (part 2) of the mounting structure of the valve unit to the vehicle seat. [Figure 4] This is a perspective view (part 3) of the mounting structure of the valve unit to the vehicle seat. [Figure 5] This is an explanatory diagram of the method for attaching (assembling) the valve unit to the vehicle seat. [Figure 6] This is a perspective view of the mounting bracket. [Figure 7] This is a perspective view of the mounting structure related to the mounting bracket. [Figure 8]This is a plan view of the mounting structure of the valve unit to the vehicle seat. [Figure 9] This is a cross-sectional view along line AA in Figure 8. [Figure 10] This is a cross-sectional view along line BB in Figure 8. [Figure 11] This is a cross-sectional view along line CC in Figure 8. [Figure 12] This is a cross-sectional view along line DD in Figure 8. [Modes for carrying out the invention]

[0009] The following describes each embodiment in detail with reference to the attached drawings. Note that the dimensional ratios in the drawings are merely examples and are not exhaustive. Furthermore, shapes and other details in the drawings may be partially exaggerated for illustrative purposes. Also, for clarity, in some cases, only a portion of parts with the same attribute are assigned reference numerals in the drawings.

[0010] Figure 1 is a perspective view showing a schematic of the internal configuration (part of the rear side) of the back of a vehicle seat 1 to which this embodiment can be applied.

[0011] Vehicle seat 1 is installed in the vehicle and allows occupants to sit. While vehicle seat 1 shown in Figure 1 is for the driver's or passenger's seat, it can also be applied to rear seats.

[0012] The back of the vehicle seat 1 is provided with a lumbar base 2. The lumbar base 2 may extend across the entire back. The lumbar base 2 forms a lumbar support section that primarily supports the occupant's lumbar spine or the surrounding area. The lumbar base 2 receives the load from the occupant over a surface area. The lumbar base 2 is made of resin or the like. The lumbar base 2 is flexible and can bend in response to the load received from the occupant. For example, if the occupant leans backward, the lumbar base 2 can bend backward. In this case, the lumbar base 2 undergoes out-of-plane deformation. The bending characteristics of the lumbar base 2 (bending characteristics in response to load) may be appropriately adapted.

[0013] The components related to the air supply device 3 are supported on the lumbar base 2. In this embodiment, the valve unit 30 is supported on the lumbar base 2. The valve unit 30 is a device for supplying air to a plurality of airbags (not shown) which are air supply targets provided on the vehicle seat 1. Specifically, the valve unit 30 incorporates one or more valves (not shown) for switching the flow path of the compressed air discharged from an air pump (not shown). Note that the valve unit 30 may be configured to incorporate an air pump.

[0014] The valve unit 30 includes a case 32 that houses components such as one or more valves (not shown). The outer shape of the case 32 is arbitrary, but in this embodiment, as an example, as shown in FIG. 1, it is in the form of a rectangular parallelepiped. Note that the case 32 may be formed by assembling a plurality of case members.

[0015] [[ID=​​​​Figures 2 to 4 are perspective views of the mounting structure of the valve unit 30 to the vehicle seat 1. Figure 5 is an explanatory diagram of the mounting method (assembly method) of the valve unit 30 to the vehicle seat 1. Figure 6 is a perspective view of the mounting bracket 40. Figure 7 is a perspective view of the mounting structure related to the mounting bracket 40. Figure 8 is a plan view of the mounting structure of the valve unit 30 to the vehicle seat 1, Figure 9 is a cross-sectional view along line AA in Figure 8, Figure 10 is a cross-sectional view along line BB in Figure 8, and Figure 11 is a cross-sectional view along line CC in Figure 8. Figure 12 is a cross-sectional view along line DD in Figure 8.

[0017] In the following, the "normal state" of the lumbar base 2 refers to the state in which no occupant is seated in the vehicle seat 1, and in which there is virtually no flexing of the lumbar base 2.

[0018] Furthermore, in the following explanation, "displacement" for the valve unit 30 and its components refers to the displacement (relative displacement) with respect to the lumber base 2. Such displacement is caused by the deflection of the lumber base 2.

[0019] Here, we will first explain the lumber base 2, and then the valve unit 30.

[0020] The lumber base 2 includes a support portion 20 and a fixing portion 28, along with a base portion 200 that constitutes the basic surface. The support portion 20 and the fixing portion 28 may be integrally formed with other parts (for example, the base portion 200). For example, the lumber base 2 may be a single piece of material.

[0021] The support portion 20 supports the main body portion 31 (described later) of the valve unit 30 by supporting the mounting bracket 40 (described later) of the valve unit 30. In other words, the support portion 20 supports the main body portion 31 of the valve unit 30 via the mounting bracket 40. In this embodiment, as an example, the support portion 20 is provided in such a manner that it protrudes from the basic surface of the lumber base 2 toward the positive side in the Z direction (an example of a first direction).

[0022] The support portion 20 includes a Z-direction support portion 21 that supports the mounting bracket 40 from the negative Z-direction side. The Z-direction support portion 21 may take the form of two wall sections that support both sides of the mounting bracket 40 in the Y-direction. In the normal state of the lumber base 2, the Z-direction support portion 21 contacts the mounting bracket 40 in the Z-direction from the negative Z-direction side.

[0023] The support portion 20 has side walls 29 on both sides in the Y direction of the Z-direction support portion 21. Each side wall 29, like the Z-direction support portion 21, has a planar shape parallel to the XZ plane and is parallel to each other.

[0024] The support portion 20 further includes a spring portion 22. The spring portion 22 contacts the surface of the supported portion 44 (described later) of the mounting bracket 40 on the positive Z-direction side from the positive Z-direction side in the Z-direction, and applies an elastic force to the supported portion 44 toward the negative Z-direction side. The elastic force applied to the supported portion 44 toward the negative Z-direction side may consist only of a component parallel to the Z-direction, but may also include components in other directions as long as it includes a component in the Z-direction.

[0025] The spring portion 22 may be in the form of a leaf spring. The spring portion 22 is made of the same resin material as the base portion 200 of the lumber base 2. However, in a modified example, the spring portion 22 may be in the form of a metallic leaf spring, in which case the spring portion 22 is assembled as part of the support portion 20.

[0026] In this embodiment, as shown in Figure 7, the spring portion 22 extends in the Y direction, bridging the upper parts of the pair of side wall portions 29, and has a shape in which the area near the center in the Y direction is curved toward the negative side in the Z direction. The spring portion 22 acts on the negative end in the X direction (an example of a second direction) of the supported portion 44 of the mounting bracket 40. Specifically, the area near the center in the Y direction of the spring portion 22 abuts against the area near the center in the Y direction of the supported portion 44 of the mounting bracket 40, and generates the aforementioned elastic force due to the deformation of the spring portion 22 itself.

[0027] The support portion 20 further includes a Z-direction locking portion 23. The Z-direction locking portion 23 locks the supported portion 44 of the mounting bracket 40 against a first predetermined amount of displacement of the supported portion 44 to the positive Z-direction side. The first predetermined amount may be an amount with the normal assembly state (hereinafter also referred to as the "nominal state") set to "0". The first predetermined amount may be any value greater than or equal to 0.

[0028] In this embodiment, the Z-direction locking portion 23 is positioned adjacent to the spring portion 22 from the positive X-direction side. As shown in Figure 7, the Z-direction locking portion 23 extends in the Y-direction parallel to the spring portion 22 and bridges the upper part of the pair of side wall portions 29. The Z-direction locking portion 23 is provided so as to cover the supported portion 44 from the positive Z-direction side over the entire Y-direction. In this case, the dimension of the gap in the Z-direction between the Z-direction locking portion 23 and the supported portion 44 (dimension in the nominal state) corresponds to the first predetermined amount described above.

[0029] Furthermore, in order to prevent abnormal noise caused by contact (collision) between the Z-direction locking portion 23 and the supported portion 44 due to the displacement of the supported portion 44 in the Z direction, the Z-direction locking portion 23 may be provided with projections 232 that abut in the Z direction on the surface of the supported portion 44 on the positive Z-direction side, as shown in Figures 7 and 10. In the example shown in Figures 7 and 10, the projections 232 are provided on both sides of the center of the Z-direction locking portion 23 in the Y direction and form a pair. In this embodiment equipped with projections 232, the dimension of the gap in the Z direction between the Z-direction locking portion 23 and the supported portion 44 (dimension in the nominal state) is 0.

[0030] The support portion 20 further includes an X-direction locking portion 24. The X-direction locking portion 24 locks the supported portion 44 against a second predetermined amount of displacement of the supported portion 44 in the X direction. The second predetermined amount may be an amount with the normal assembly state set to "0". In this embodiment, the X-direction locking portion 24 includes an X-direction positive side locking portion 241 that locks the supported portion 44 against a second predetermined amount α1 displacement of the supported portion 44 on the positive X side, and an X-direction negative side locking portion 242 that locks the supported portion 44 against a second predetermined amount α2 displacement of the supported portion 44 on the negative X side. In this case, the second predetermined amounts α1 and α2 are arbitrary and may be the same, but preferably, the second predetermined amount α1 is set to be larger than the second predetermined amount α2. This is suitable when the lumber base 2 is deflected to the negative side in the Z direction, and the locking portion 24 in the X direction is displaced to the negative side in the X direction relative to the supported portion 44. Note that either of the second predetermined amounts α1 and α2 (for example, the second predetermined amount α2) may be 0. For example, when the second predetermined amount α2 = 0, that is, the locking portion 242 on the negative side in the X direction may be in contact with the supported portion 44 in the X direction in a nominal state.

[0031] In this embodiment, the locking portion 241 on the positive X-direction side is a convex portion that is part of the side wall portion 29 and is convex on the positive Z-direction side. In this case, when the X-direction convex portion 441 of the supported portion 44 abuts against the locking portion 241 on the positive X-direction side in the X-direction, further displacement of the supported portion 44 in the positive X-direction side becomes impossible. In other words, the locking portion 241 on the positive X-direction side functions.

[0032] Furthermore, the locking portion 242 on the negative X-direction side is a convex portion that is part of the side wall portion 29 and protrudes toward the positive Z-direction side. The locking portion 242 on the negative X-direction side is also a columnar portion that is connected to the Z-direction locking portion 23. In this case, when the Y-direction convex portion 441 of the supported portion 44 abuts against the locking portion 242 on the negative X-direction side in the X-direction, further displacement of the supported portion 44 toward the negative X-direction side becomes impossible. In other words, the locking portion 242 on the negative X-direction side functions.

[0033] In this embodiment, the locking portion 242 on the negative side in the X direction may have a positioning function that determines the position of the supported portion 44 in the Y direction. In this case, the locking portions 242 on the negative side in the X direction on both sides in the Y direction may perform the positioning function by abutting the end faces on both sides of the supported portion 44 in the X direction in the Y direction. In this case, the locking portion 242 on the negative side in the X direction may have an arc shape in which the supported portion 44 side is convex when viewed in cross-section in the XY plane, and in this case, the locking portion 242 on the negative side in the X direction can make point contact with the supported portion 44 near the center in the X direction. As a result, the ease of assembly when assembling the valve unit 30 to the lumber base 2 is improved compared to a comparative example (not shown) in which the locking portion 242 on the negative side in the X direction contacts the supported portion 44 over a certain length in the X direction. That is, the ease of assembly is improved when passing the supported portion 44 between the locking portions 242 on the negative side in the Z direction and the pair of locking portions 242 on the negative side in the X direction relative to the Z direction locking portion 23 (see Figure 5).

[0034] The fixing portion 28 engages with the fixed portion 34 (described later) of the valve unit 30 to fix the fixed portion 34. In this embodiment, as an example, the fixing portion 28 is provided in such a manner that it protrudes from the basic surface of the lumber base 2 toward the positive Z direction.

[0035] The fixed portion 28 has an engaging portion 282 (Figure 12) that is inserted into the fixed portion 34 of the valve unit 30. The engaging portion 282 is in the form of a wall extending in the YZ plane and may be provided in pairs on both sides of the central portion 284 in the Y direction. The upper part of the engaging portion 282 in the Z direction is inserted into the fixed portion 34, which will be described later.

[0036] In this embodiment, the lumber base 2 supports and fixes the valve unit 30 via the support portion 20 and the fixing portion 28. The support portion 20 and the fixing portion 28 are separated in the X direction. Therefore, the lumber base 2 is supported at two points separated in the X direction. However, in a modified example, the lumber base 2 may support the valve unit 30 at three or more points.

[0037] Next, we will describe the valve unit 30.

[0038] The valve unit 30 includes a main body 31, a fixed part 34, and a mounting bracket 40.

[0039] The main body portion 31 includes a part of the case 32 described above and components housed in the case 32. The components housed in the case 32 are valves, etc. The portion of the case 32 that forms the main body portion 31 is the portion other than the fixed portion 34 described later.

[0040] The fixed portion 34 is provided on the positive side in the X direction of the main body portion 31. The valve unit 30 is fixed to the lumber base 2 on the positive side in the X direction via the fixed portion 34. In this case, the number of parts and installation time can be reduced compared to when the same fixing is achieved using screws or the like. Furthermore, since the fixed portion 34 is part of the case 32, it can be fixed to the fixing portion 28 without using a bracket such as the mounting bracket 40. This reduces the number of parts and installation time compared to when the same fixing is achieved using a bracket.

[0041] In the comparative example (not shown) in which the valve unit 30 is fixed to the lumber base 2 using a bracket, screws are required to fix the bracket to the lumber base 2, and a press-fitting process for the bracket is also required. In this embodiment, such screws can be eliminated, and the press-fitting process for the bracket can also be eliminated. However, in a modified example, the valve unit 30 (fixed part 34) may be fixed to the lumber base 2 (fixed part 28) using a bracket.

[0042] The fixed portion 34 is fixed to the lumber base 2. The fixed portion 34 may be part of the case 32 described above. The fixed portion 34 is fixed to the lumber base 2 by engaging with the engaging portion 282 (see Figures 5 and 12) of the fixing portion 28 of the lumber base 2. Specifically, the fixed portion 34 has the form of a C-shaped claw portion that forms an engaging hole 340 (see Figures 4 and 12) when viewed in the Z direction, and is provided in pairs on both sides in the Y direction relative to the central portion 284 (see Figure 4) of the fixing portion 28 described above. The fixed portion 34 has an opening on the side facing the central portion 284 of the fixing portion 28. In this case, the engagement (fixing) between the fixed portion 34 and the fixing portion 28 is achieved when the engaging portion 282 described above is inserted into the engaging hole 340.

[0043] The mounting bracket 40 is provided on the negative side in the X direction of the main body 31. The valve unit 30 is supported on the lumber base 2 on the negative side in the X direction via the mounting bracket 40.

[0044] As shown in Figure 6, the mounting bracket 40 has an L-shape when viewed in the Y direction and includes a press-fit portion 42 and a supported portion 44.

[0045] The press-fit portion 42 is a plate-like shape extending in the YZ plane. The press-fit portion 42 has an engaging portion 422 at its upper part that is inserted into the negative side in the X direction of the main body portion 31. The engaging portion 422 is a wall-like shape extending in the YZ plane and may be provided in pairs on both sides of the central portion 423 in the Y direction.

[0046] The press-fit portion 42 may have Y-direction projections 424 on both sides of its lower Y-direction. The projections 424 engage with the main body portion 31 of the valve unit 30, thereby restricting the Z-direction position of the mounting bracket 40 relative to the main body portion 31.

[0047] In this embodiment, the mounting bracket 40 is engaged with the main body 31 by press-fitting the press-fit portion 42 into the negative side of the main body 31 in the X direction. Specifically, the upper part of the press-fit portion 42 in the Z direction is press-fitted by being inserted into the negative side of the main body 31 in the X direction. In this case, the upper part of the press-fit portion 42 may have the same shape as the engaging portion 282 of the fixing portion 28 of the lumber base 2. Similarly, the shape of the negative side of the main body 31 in the X direction may be the same as the shape of the positive side of the main body 31 in the X direction. That is, the negative side of the main body 31 in the X direction may have a shape that can constitute a fixed portion 34. In this case, one or both of the sides of the valve unit 30 in the X direction can be given the same function as a fixed portion 34, thereby increasing the versatility of the valve unit 30.

[0048] The supported portion 44 has a plate-like shape extending in the XY plane. The supported portion 44 is supported by the support portion 20 of the lumber base 2.

[0049] As described above in relation to the support portion 20, the supported portion 44 is supported by the support portion 20 in a manner that allows it to be displaced relative to the lumbar base 2. Specifically, the supported portion 44 is supported in a manner that allows it to be displaced relative to the lumbar base 2 in the positive Z direction. Furthermore, the supported portion 44 is supported in a manner that allows it to be displaced relative to the lumbar base 2 in the Y direction. However, the supported portion 44 is supported in a manner that makes it substantially impossible for it to be displaced relative to the lumbar base 2 in the X direction.

[0050] As described above, according to this embodiment, the valve unit 30 is supported so as to be displaceable with respect to the lumber base 2, so that when the lumber base 2 deflects, the force that may be received due to the deflection of the lumber base 2 can be relieved. In other words, according to this embodiment, the deflection of the lumber base 2 can be appropriately tolerated, while the force that may be received due to such deflection can be appropriately relieved. For example, since the supported portion 44 can be displaced toward the positive Z direction, it is possible to prevent a significant force in the Z direction from being generated in the supported portion 44 due to the deflection of the lumber base 2. Furthermore, the displacement of the supported portion 44 toward the positive Z direction may be accompanied by a displacement of the supported portion 44 in the X direction. In other words, it is possible to prevent a significant force in the X direction from being generated in the supported portion 44 due to the deflection of the lumber base 2.

[0051] Furthermore, according to this embodiment, the presence of the spring portion 22 can suppress the easy displacement of the supported portion 44, thereby reducing the generation of abnormal noises and the like. In other words, according to this embodiment, while allowing the supported portion 44 to be displaced in the positive Z direction, it is possible to reduce the inconveniences (such as the generation of abnormal noises) that may arise due to such displacement.

[0052] Furthermore, according to this embodiment, the Z-direction locking portion 23 prevents excessive displacement of the supported portion 44 toward the positive Z-direction. Similarly, the X-direction locking portion 24 prevents excessive displacement of the supported portion 44 toward the X-direction, which may occur due to factors other than the normal deflection of the lumber base 2.

[0053] Furthermore, according to this embodiment, since the supported portion 44 is supported only by engagement with the support portion 20, the number of parts and installation time can be reduced compared to the case where the same fixing is achieved using screws or the like. Note that in the case where the valve unit 30 is supported on the lumber base 2 using the mounting bracket 40, a comparative example (not shown) in which the mounting bracket 40 is fixed to the lumber base 2 with screws can also be considered. In contrast, in this embodiment, such screws can be eliminated.

[0054] In this way, according to this embodiment, the mounting structure for the valve unit 30 to the lumber base 2 is realized without including mounting screws. This makes it possible to reduce the number of parts and the man-hours required for installation (i.e., reduce the screw tightening process).

[0055] Next, referring to Figure 5 mentioned above, and further referring to Figure 12, the method of attaching the valve unit 30 to the vehicle seat 1 and the relationship between the fixing part 28 and the fixed part 34 will be explained.

[0056] In this embodiment, as shown in Figure 5, the valve unit 30 can be assembled to the lumber base 2 by first supporting the supported portion 44 on the support portion 20, and then fixing the fixed portion 34 to the fixing portion 28. When supporting the supported portion 44 on the support portion 20, the valve unit 30 may be in an inclined position in which the supported portion 44 is located on the negative Z side relative to the fixed portion 34. The supported portion 44 is then assembled to the negative X side, passing between the Y direction of the pair of locking portions 242 that are on the negative Z side relative to the Z direction locking portion 23 and on the negative X side. At this time, the supported portion 44 can be easily assembled so that it passes on the negative Z side relative to the Z direction locking portion 23 and comes to the negative Z side relative to the spring portion 22. After that, the fixed portion 34 is press-fitted into the fixing portion 28 while correcting the inclined position of the valve unit 30 (while moving the fixed portion 34 to the negative Z side). In this case, the fixed portion 34 is press-fitted into the fixing portion 28 with a rotational trajectory centered around the supported portion 44 in a view in the Y direction. To facilitate the insertion of the fixing portion 28 into the fixed portion 34, the engaging portion 282 of the fixing portion 282 preferably has a tapered surface 289 at its positive Z-direction end, as shown in Figure 12. The tapered surface 289 may be formed in such a manner that its width in the X direction decreases as it approaches the positive Z-direction side in a view in the Y direction. Similarly, the fixed portion 34 preferably has a tapered surface 349 at its negative Z-direction end of the portion forming the wall surface on the positive X-direction side of the engaging hole 340, as shown in Figure 12. The tapered surface 349 may be formed in such a manner that its width in the X direction decreases as it approaches the negative Z-direction side (a manner in which the width of the engaging hole 340 in the X direction increases). This facilitates the insertion of the engaging portion 282 into the engaging hole 340.

[0057] In this embodiment, as shown in Figures 5 and 7, the support portion 20 has an inclined surface 25 at the end on the positive X-direction and positive Z-direction when viewed in the Y-direction. This allows the height of the support portion 20 in the Z-direction to decrease towards the positive X-direction at the end on the positive X-direction. Such an inclined surface 25 has the function of making it easier to detect, for example, incorrect assembly of the valve unit 30. That is, if the support portion 20 of the valve unit 30 reaches the negative Z-direction along the inclined surface 25, it is incorrect assembly, and this condition can be easily formed.

[0058] Although each embodiment has been described in detail above, the invention is not limited to any particular embodiment, and various modifications and changes are possible within the scope described in the claims. Furthermore, it is possible to combine all or more of the components of the embodiments described above.

[0059] For example, the above-described embodiment relates to a mounting structure between the valve unit 30 and the lumbar base 2, but it can also be applied to mounting structures for the valve unit 30 to base members other than the lumbar base 2. In this case, the above-described effect can be obtained as long as the base member is such that it bends out of plane by receiving the load of the occupant over a surface, similar to the lumbar base 2. For example, such a base member may be the base member of the seat portion of the vehicle seat 1.

[0060] Furthermore, in the above-described embodiment, the spring contact portion 442 that abuts the spring portion 22 of the supported portion 44 in the Z direction is not directly supported in the Z direction by the lumber base 2 from the negative Z direction side. That is, the Z direction support portion 21 that supports in the Z direction from the negative Z direction side is provided at a different position from the spring portion 22. In contrast, in the modified example, the spring portion 22 and the Z direction support portion 21 may be provided in such a manner that they sandwich the supported portion 44 in the Z direction. [Explanation of symbols]

[0061] 1 Vehicle seat, 2 Lumbar base (base member), 20 Support part, 21 Z-direction support part (contact support part), 22 Spring part, 23 Z-direction locking part (first locking part), 24 X-direction locking part (second locking part), 28 Fixing part, 30 Valve unit, 34 Fixed part, 44 Supported part

Claims

1. A mounting structure for a valve unit for supplying air to an object to be supplied with air, which is provided on a vehicle seat, to the vehicle seat, A support part provided on the base member of a vehicle seat that receives the load from the seated occupant over a surface area, The valve unit comprises a supported portion that is provided on the valve unit and is supported by the support portion in a manner that is displaceable with respect to the base member, The aforementioned support portion is A contact support portion that abuts against the side of the supported portion facing the basic surface of the base member, A mounting structure having a spring portion that applies an elastic force to the supported portion in a first direction perpendicular to the basic surface and toward the basic surface.

2. The mounting structure according to claim 1, wherein the support portion further has a first locking portion that locks the supported portion against a displacement of the supported portion by a first predetermined amount or more toward the side away from the basic surface in the first direction.

3. The mounting structure according to claim 1, wherein the support portion further has a second locking portion that locks the supported portion against displacement of the supported portion by a second predetermined amount or more in a second direction perpendicular to the first direction.

4. A fixing portion provided on the base member, The valve unit further comprises a fixed part that is provided on the valve unit and fixed to the fixed part, The mounting structure according to any one of claims 1 to 3, wherein the fixed portion is fixed to the fixing portion by an insert-type engagement.

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