Vehicle seats

Abstract

Adjust the height of the seat cushion. [Solution] The vehicle seat 10 includes a seat cushion 12 that supports the seated occupant's buttocks from below, a guide portion 26, and a holding portion 28. The guide portion 26 has a first guide portion 32 and a second guide portion 34 that moves vertically along the first guide portion 32 together with the seat cushion 12. The holding portion 28 is configured to include a locking portion 44, and when the locking portion 44 is locked to the locked portion 46, the displacement of the second guide portion 34 relative to the first guide portion 32 is restricted, and the height of the seat cushion 12 is maintained.

Description

Technical Field

[0001] The present invention relates to a vehicle seat.

Background Art

[0002] Patent Documents 1 and 2 below disclose vehicle seats capable of adjusting the height of a seat (seat cushion). In the seat lifting device of the seat described in Patent Document 1, the height of the seat can be adjusted by changing the fastening position of a plate connected to the front end portion of the seat and changing a pedestal provided at the rear end portion of the seat. Further, in the seat described in Patent Document 2, a rod of a seat body is supported in a state of being inserted into a support cylinder. A plurality of protrusions are formed on the rod at a constant pitch. By selectively engaging an engaging portion of a lever with the plurality of protrusions formed on the rod, it is possible to adjust the height of the seat body.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] In consideration of the above facts, an object of the present invention is to obtain a vehicle seat capable of adjusting the height of a seat cushion.

Means for Solving the Problems

[0005] A vehicle seat according to the first embodiment includes a seat cushion that supports the buttocks of a seated occupant from below, a guide portion having a first guide portion and a second guide portion that moves vertically together with the seat cushion along the first guide portion, and a holding portion provided on the second guide portion, wherein the height of the seat cushion is maintained by restricting the displacement of the second guide portion relative to the first guide portion when the locking portion is locked to the first guide portion.

[0006] In the first embodiment of the vehicle seat, the vertical position of the seat cushion changes as the second guide portion moves along the first guide portion. Furthermore, when the locking portion provided on the second guide portion is locked to the first guide portion, the displacement of the second guide portion relative to the first guide portion is restricted, and the height of the seat cushion is maintained. In this first embodiment of the vehicle seat, the height of the seat cushion can be adjusted by adjusting the locking position of the locking portion provided on the second guide portion with respect to the first guide portion.

[0007] A vehicle seat of the second embodiment comprises a seat cushion that supports the buttocks of a seated occupant from below; a guide portion having a first guide portion and a second guide portion that moves vertically together with the seat cushion along the first guide portion; a locking portion provided on the seat cushion side; and a plurality of locking portions provided on the vehicle body side and arranged at vertical intervals, wherein the height of the seat cushion is maintained when the locking portion is locked to the locking portions.

[0008] According to the second embodiment of the vehicle seat, the vertical position of the seat cushion changes as the second guide portion moves along the first guide portion. The height of the seat cushion is maintained when the locking portion is engaged with a locking portion provided on the vehicle body side. In the second embodiment of the vehicle seat, the height of the seat cushion can be adjusted by selectively engaging the locking portion provided on the seat cushion side with a plurality of locking portions provided on the vehicle body side.

[0009] A third embodiment of a vehicle seat comprises a seat cushion that supports the buttocks of a seated occupant from below, a link that connects the vehicle floor and the seat cushion in the vertical direction and supports the seat cushion so as to be movable in the vertical direction, a locking portion provided on the seat cushion side, and a plurality of locking portions provided on the vehicle body side and arranged at vertical intervals, wherein the height of the seat cushion is maintained when the locking portion is locked to the locking portions.

[0010] In the third embodiment of the vehicle seat, the seat cushion is supported so as to be movable in the vertical direction by a link. Furthermore, the height of the seat cushion is maintained by locking a locking portion provided on the seat cushion side locking a locking portion provided on the vehicle body side. In this third embodiment of the vehicle seat, the height of the seat cushion can be adjusted by selectively locking the locking portion provided on the seat cushion side to a plurality of locking portions provided on the vehicle body side. [Effects of the Invention]

[0011] The vehicle seat according to the present invention has the excellent effect of allowing the height of the seat cushion to be adjusted. [Brief explanation of the drawing]

[0012] [Figure 1] This is a schematic side view showing a vehicle seat equipped with a height adjustment device according to the first embodiment. [Figure 2] This is a side view of a vehicle seat corresponding to Figure 1, showing a state in which the height of the seat cushion has been changed compared to the state shown in Figure 1. [Figure 3] It is a plan view schematically showing a height adjustment device. [Figure 4] It is a rear view schematically showing a height adjustment device. [Figure 5] It is a side view schematically showing a part of a height adjustment device. [Figure 6] It is a side view schematically showing a height adjustment device of the second embodiment. [Figure 7] It is a side view schematically showing a height adjustment device of the third embodiment. [[ID=I5]] [Figure 8] It is a side view schematically showing a height adjustment device of the third embodiment, showing a state where an operation button is pressed. <00D0075>It is a side view schematically showing a height adjustment device of the fourth embodiment. [Figure 10] It is a side view schematically showing a height adjustment device of the fifth embodiment. [Figure 11] It is a side view schematically showing a vehicle seat provided with a height adjustment device of the sixth embodiment. [Figure 12] It is a cross-sectional view schematically showing an example provided with a cover covering a height adjustment device. [Figure 13] It is a cross-sectional view corresponding to FIG. 12, showing a state where the height of the seat cushion is changed with respect to the state shown in FIG. 12.

Mode for Carrying Out the Invention

[0013] (Vehicle seat 10 provided with height adjustment device 18 of the first embodiment) Using FIGS. 1 to 5, the vehicle seat 10 provided with the height adjustment device 18 of the first embodiment will be described. The arrows FR, UP, RH, and LH shown in the figures indicate the front side, upper side, right side, and left side of the seat as viewed from a passenger sitting on the vehicle seat 10, respectively. Hereinafter, when simply using the front-rear, up-down, and left-right directions for explanation, unless otherwise specified, they indicate the front and rear in the seat front-rear direction, the up and down in the seat up-down direction, and the left and right in the seat left-right direction. And do. Also, the seat left-right direction coincides with the seat width direction.

[0014] As shown in FIGS. 1 and 2, the vehicle seat 10 includes a seat cushion 12 that supports the buttocks of the seated occupant from below, a seat back 14 that supports the back of the seated occupant from the rear side, and a headrest 16 that supports the head of the seated occupant from the rear side. Further, the vehicle seat 10 includes a height adjustment device 18 that enables adjustment of the height of the seat cushion 12 in the vertical direction.

[0015] The seat cushion 12 is configured to include a cushion pad covered with trim. This seat cushion 12 is supported from below by a height adjustment device 18 described later.

[0016] Here, the vehicle equipped with the vehicle seat 10 includes a back panel 24 that separates the cabin 20 and the cargo bed 22. And the seat back 14 and the headrest 16 are fixed to the surface on the cabin 20 side of the back panel 24.

[0017] As shown in FIGS. 1 to 5, the height adjustment device 18 includes a guide portion 26 that supports the seat cushion 12 so as to be movable in the vertical direction, and a holding portion 28 that holds the height of the seat cushion 12.

[0018] The guide portion 26 includes four first guide portions 32 fixed to the floor 30 of the vehicle, and four second guide portions 34 that move vertically along the four first guide portions 32.

[0019] As shown in FIGS. 1 and 2, the first guide portion 32 includes a slide shaft portion 32A formed in a columnar shape with the vertical direction as the axial direction, and a stopper portion 32B formed at the upper end portion of the slide shaft portion 32A and having a larger diameter than the slide shaft portion 32A. In FIGS. 3 to 5, the illustration of the stopper portion 32B is omitted. As shown in FIG. 3, the four first guide portions 32 are respectively arranged below the right front end portion, the right rear end portion, the left front end portion, and the left rear end portion of the seat cushion 12 (see FIG. 1).

[0020] As shown in Figures 1 and 2, the second guide portion 34 is formed in a cylindrical shape. The slide shaft portion 32A of the first guide portion 32 is inserted into the second guide portion 34, so that the second guide portion 34 moves vertically along the slide shaft portion 32A of the first guide portion 32. The second guide portion 34 comes into contact with the stopper portion 32B of the first guide portion 32, preventing the second guide portion 34 from coming out of the slide shaft portion 32A of the first guide portion 32.

[0021] As shown in Figure 3, the second guide section 34 on the right front side and the second guide section 34 on the right rear side are connected in the front-rear direction via the side frame section 36. The second guide section 34 on the left front side and the second guide section 34 on the left rear side are also connected in the front-rear direction via the side frame section 36. Furthermore, the second guide section 34 on the right front side and the second guide section 34 on the left front side are connected in the left-right direction via the front frame section 38. Rectangular block-shaped brackets 40 are joined to the second guide section 34 on the right rear side and the second guide section 34 on the left rear side by welding or other means. A pivot shaft section 42, with its axis oriented in the left-right direction, is supported by the left and right brackets 40. This pivot shaft section 42 is rotatable in the left-right direction relative to the left and right brackets 40. The right end of the pivot shaft section 42 protrudes to the right relative to the right bracket 40, and the left end of the pivot shaft section 42 protrudes to the left relative to the left bracket 40. Furthermore, a cushion spring (not shown) is stretched between the pivot shaft portion 42 and the front frame portion 38. This allows the seat The cushion 12 is supported from below by the left and right side frame sections 36, the front frame section 38, and cushion springs, etc.

[0022] As shown in Figure 5 (see also Figures 3 and 4), the retaining portion 28 is composed of a pair of locking portions 44 provided on the seat cushion 12 side and a plurality of locking portions 46 provided on the vehicle body side and arranged at intervals in the vertical direction.

[0023] The locking portion 44 is formed in a roughly L-shape when viewed from the left and right directions. In this embodiment, a pair of locking portions 44 are joined to the right and left ends of the pivot shaft portion 42 by welding or the like, respectively. As the pivot shaft portion 42 rotates with the left and right direction as its axial direction, the pair of locking portions 44 tilt toward the locked portion 46 side or toward the opposite side of the locked portion 46, which will be described later. The pair of locking portions 44 are biased toward the locked portion 46 side by a biasing member (not shown). Furthermore, when a crew member pulls the pair of locking portions 44, the pair of locking portions 44 tilt toward the opposite side of the locked portion 46.

[0024] The locking portion 46 is formed in a cylindrical shape with the left-right direction as its axis when viewed in cross-section along the front-rear and up-down directions. In this embodiment, the three locking portions 46 to which the right locking portion 44 is each locked are fixed to the back panel 24 (see Figure 1) with spacing between them in the vertical direction. Similarly, the three locking portions 46 to which the left locking portion 44 is each locked are fixed to the back panel 24 (see Figure 1) with spacing between them in the vertical direction.

[0025] (Operation and effects of this embodiment) Next, the operation and effects of this embodiment will be described.

[0026] As shown in Figures 1 and 2, the vehicle seat 10 described above allows for adjustment of the height of the seat cushion 12.

[0027] As shown in Figures 1 to 5, in order to adjust the height of the seat cushion 12, the occupant first pulls the pair of locking parts 44. This causes the pair of locking parts 44 to tilt away from the locked part 46, making it impossible for the pair of locking parts 44 to lock onto the locked part 46. In this state, the occupant can move the seat cushion 12 vertically.

[0028] Furthermore, the occupant tilts the pair of locking parts 44 toward the locked parts 46, thereby locking the pair of locking parts 44 onto the locked parts 46. This maintains the height of the seat cushion 12. In this way, the height adjustment device 18 of this embodiment allows the height of the seat cushion 12 to be adjusted by selectively locking the pair of locking parts 44 onto multiple locked parts 46, as shown in Figures 1 and 2.

[0029] (Height adjustment device 50 of the second embodiment) Next, the height adjustment device 50 of the second embodiment will be described. In the height adjustment device 50 of the second embodiment, the members and parts corresponding to the aforementioned height adjustment device 18 are denoted by the same reference numerals as the members and parts corresponding to the height adjustment device 18, and their descriptions may be omitted.

[0030] As shown in Figure 6, in the height adjustment device 50 of this embodiment, a holding part 28 for maintaining the height of the seat cushion 12 (see Figure 1) is provided in the first guide part 32 and the second guide part 34.

[0031] Inside the second guide portion 34, there is a locking portion 44 which has a pointed shape on the slide shaft portion 32A side of the first guide portion 32. This locking portion 44 is located on the slide shaft portion 32A side and the slide The second guide portion 34 is supported in a state that allows it to move toward the opposite side of the shaft portion 32A. The locking portion 44 is also biased toward the slide shaft portion 32A by the biasing member 52.

[0032] Multiple locking recesses 32C are arranged on the slide shaft portion 32A at intervals in the vertical direction. When the aforementioned locking portion 44 is locked into the multiple locking recesses 32C, the movement of the second guide portion 34 relative to the first guide portion 32 is restricted, and the height of the seat cushion 12 (see Figure 1) is maintained.

[0033] To adjust the height of the seat cushion 12 using the height adjustment device 50 of this embodiment described above, first, the occupant operates a lever or the like (not shown) to pull the locking portion 44 via the wire 48. This causes the locking portion 44 to tilt to the opposite side of the slide shaft portion 32A of the first guide portion 32, making it impossible for the locking portion 44 to lock into the locking recess 32C. In this state, the occupant can move the seat cushion 12 in the vertical direction.

[0034] Furthermore, when the occupant finishes operating a lever or the like (for example, when the occupant releases their hand from the lever or the like), the locking portion 44 tilts toward the slide shaft portion 32A of the first guide portion 32 and locks into the locking recess 32C. This maintains the height of the seat cushion 12. In this way, the height adjustment device 50 of this embodiment allows the height of the seat cushion 12 to be adjusted by selectively locking the locking portion 44 into a plurality of locking recesses 32C.

[0035] (Height adjustment device 54 of the third embodiment) Next, the height adjustment device 54 of the third embodiment will be described. In the height adjustment device 54 of the third embodiment, the members and parts corresponding to the aforementioned height adjustment devices 18 and 50 are denoted by the same reference numerals as the members and parts corresponding to the height adjustment devices 18 and 50, and their descriptions may be omitted.

[0036] As shown in Figure 7, in the height adjustment device 54 of this embodiment, a holding part 28 for maintaining the height of the seat cushion 12 (see Figure 1) is provided on the second guide part 34.

[0037] Inside the second guide section 34 is a locking plate 56, which serves as a locking part and has an insertion hole 56A. The slide shaft portion 32A of the first guide section 32 is inserted through the insertion hole 56A of the locking plate 56. The locking plate 56 is supported by the second guide section 34 in a state that allows it to tilt with respect to the axial direction (up and down direction) of the slide shaft portion 32A. The locking plate 56 is biased by a biasing member (not shown) to be in a tilted position with respect to the up and down direction. The second guide section 34 is also provided with an operation button 58 that is operated by the occupant. As shown in Figure 8, by pressing the operation button 58 downwards, the locking plate 56 is displaced from a position tilted with respect to the up and down direction to a position aligned with a direction perpendicular to the up and down direction.

[0038] As shown in Figure 7, according to the height adjustment device 54 of this embodiment described above, when no operating force is applied to the operation button 58, the locking plate 56 is in an inclined position with respect to the vertical direction. In this state, the edge of the insertion hole 56A of the locking plate 56 is locked to the slide shaft portion 32A. This restricts the movement of the second guide portion 34 relative to the first guide portion 32, and maintains the height of the seat cushion 12 (see Figure 1).

[0039] In contrast, as shown in Figure 8, by pressing the operation button 58 downwards, the locking plate 56 is displaced from a position inclined with respect to the vertical direction to a position aligned with a direction perpendicular to the vertical direction, so that the edge of the insertion hole 56A of the locking plate 56 is not locked to the slide shaft portion 32A. This allows the second guide portion 34 to move relative to the first guide portion 32, and the height of the seat cushion 12 (see Figure 1) can be changed.

[0040] As described above, in the height adjustment device 54 of this embodiment, the edge of the insertion hole 56A of the locking plate 56 can be locked to the slide shaft portion 32A in a stepless manner. This makes it possible to adjust the height of the seat cushion 12 steplessly.

[0041] (Height adjustment device 60 of the fourth embodiment) Next, the height adjustment device 60 of the fourth embodiment will be described. In the height adjustment device 60 of the fourth embodiment, the members and parts corresponding to the aforementioned height adjustment devices 18, 50, and 54 are denoted by the same reference numerals as the members and parts corresponding to the height adjustment devices 18, 50, and 54, and their descriptions may be omitted.

[0042] As shown in Figure 9, in the height adjustment device 60 of this embodiment, a holding part 28 for maintaining the height of the seat cushion 12 (see Figure 1) is provided on the second guide part 34.

[0043] A coil spring 62 is provided inside the second guide section 34 as a locking mechanism. The slide shaft portion 32A of the first guide section 32 is inserted through this coil spring 62. Before the slide shaft portion 32A is inserted, the inner diameter of the coil spring 62 is smaller than the outer diameter of the slide shaft portion 32A. Therefore, when the slide shaft portion 32A is inserted through the coil spring 62 and no external force is applied to the coil spring 62, the coil spring 62 tightens around the slide shaft portion 32A. The second guide section 34 is also provided with an operating lever 64 operated by the occupant. By tilting this operating lever 64, the coil spring 62 is twisted, increasing its inner diameter.

[0044] According to the height adjustment device 60 of this embodiment described above, when no operating force is applied to the operating lever 64, the coil spring 62 tightens around the slide shaft portion 32A. This restricts the movement of the second guide portion 34 relative to the first guide portion 32, thereby maintaining the height of the seat cushion 12 (see Figure 1).

[0045] In contrast, tilting the operating lever 64 increases the inner diameter of the coil spring 62. This allows the second guide portion 34 to move relative to the first guide portion 32, thereby changing the height of the seat cushion 12 (see Figure 1).

[0046] As described above, in the height adjustment device 60 of this embodiment, the coil spring 62 can be engaged with the slide shaft portion 32A in a stepless manner. This makes it possible to adjust the height of the seat cushion 12 steplessly.

[0047] (Height adjustment device 66 of the fifth embodiment) Next, the height adjustment device 66 of the fifth embodiment will be described. In the height adjustment device 66 of the fifth embodiment, the members and parts corresponding to the aforementioned height adjustment devices 18, 50, 54, and 60 are denoted by the same reference numerals as the members and parts corresponding to the height adjustment devices 18, 50, 54, and 60, and their descriptions may be omitted.

[0048] As shown in Figure 10, the height adjustment device 66 of this embodiment is configured similarly to the height adjustment device 18 of the first embodiment, except that a locking latch 68 is provided as a locking part instead of the locking part 44 (see Figure 5). The locking latch 68 is configured to include a latch body 68B having a recess 68A into which the locked part 46 is locked, and a claw part 68C that is tiltably supported relative to the latch body 68B. When the locked part 46 is positioned within the recess 68A of the latch body 68B, the claw part 68C is positioned close to the locked part 46, thereby preventing the locked part 46 from coming out of the recess 68A of the latch body 68B. This is not possible. Furthermore, by tilting the claw portion 68C to the opposite side from the locked portion 46 via the wire 48, the locked portion 46 can be released from the recess 68A of the latch body 68B. The height of the seat cushion 12 can also be adjusted in the height adjustment device 66 of this embodiment described above. In addition, in the height adjustment device 66 of this embodiment, the claw portion 68C is positioned close to the locked portion 46, so that the locked portion 46 cannot be released from the recess 68A of the latch body 68B. As a result, even if vibrations due to driving on rough roads are input to the locking latch 68, it is possible to prevent or suppress the locking latch 68 from coming off the locked portion 46.

[0049] (Height adjustment device 70 of the sixth embodiment) Next, the height adjustment device 70 of the fifth embodiment will be described. In the height adjustment device 70 of the sixth embodiment, the members and parts corresponding to the aforementioned height adjustment devices 18, 50, 54, 60, and 66 are denoted by the same reference numerals as the members and parts corresponding to the height adjustment devices 18, 50, 54, 60, and 66, and their descriptions may be omitted.

[0050] As shown in Figure 11, the height adjustment device 70 of this embodiment is configured similarly to the height adjustment device 18 of the first embodiment, except that a link portion 72 is provided instead of a guide portion 26 which includes a first guide portion 32 and a second guide portion 34. The height of the seat cushion 12 can also be adjusted with the height adjustment device 70 of this embodiment.

[0051] (Example with cover 74) Next, we will describe an example in which a cover 74 is provided to cover the height adjustment device 18 from the left and right directions.

[0052] In the examples shown in Figures 12 and 13, a pair of left and right covers 74 are provided to cover the height adjustment device 18 from the left and right directions. This prevents the appearance of the vehicle seat 10 from being spoiled by the height adjustment device 18. In addition, in the examples shown in Figures 12 and 13, a bellows member 76 is provided to cover a part of the height adjustment device 18 that is installed between the seat cushion 12 and the vehicle floor 30. By having this bellows member 76, it is possible to prevent foreign objects from entering the part of the height adjustment device 18 that is installed between the seat cushion 12 and the vehicle floor 30.

[0053] Although one embodiment of the present invention has been described above, it goes without saying that the present invention is not limited to the above, and can be implemented in various other ways without departing from the spirit of the invention. [Explanation of Symbols]

[0054] 10 Vehicle seats 12 seat cushions 26 Guide section 28 Holding part 32. Section 1 Guide 34. Section 2 of the Guide Department 44 Locking part 46 Locked part 56 Locking plate (locking part) 62 Coil spring (locking part) 68 Locking latch (locking part) 72 Link section

Claims

1. A seat cushion that supports the seated occupant's buttocks from below, A guide section having a first guide section and a second guide section that moves vertically along the first guide section together with the seat cushion, A retaining portion comprising a locking portion provided on the second guide portion, wherein the locking portion is locked to the first guide portion, thereby restricting the displacement of the second guide portion relative to the first guide portion and maintaining the height of the seat cushion, A vehicle seat equipped with [a specific feature / feature].

2. A seat cushion that supports the seated occupant's buttocks from below, A guide section having a first guide section and a second guide section that moves vertically along the first guide section together with the seat cushion, The retaining part comprises a locking portion provided on the seat cushion side and a plurality of locking portions provided on the vehicle body side and arranged at vertical intervals, wherein the height of the seat cushion is maintained when the locking portion is locked to the locking portions. A vehicle seat equipped with [a specific feature / feature].

3. A seat cushion that supports the seated occupant's buttocks from below, A link portion connects the floor of the vehicle body and the seat cushion in the vertical direction, and supports the seat cushion so that it can move in the vertical direction, The retaining part comprises a locking portion provided on the seat cushion side and a plurality of locking portions provided on the vehicle body side and arranged at vertical intervals, wherein the height of the seat cushion is maintained when the locking portion is locked to the locking portions. A vehicle seat equipped with [a specific feature / feature].

Images