JP2000309237A - Seat frame for vehicle equipped with vertical adjustment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat frame with the same thickness all over, enabling the efficient use of a room space, reliable working performance, improved durability and easy assembly thereof. SOLUTION: In this seat frame, a seat frame 1 is composed of left and right side frames 10, a front side frame 2 and a rear side frame 18. A vertical mechanism 22, composed of a front side arm 23, rear side arm 26 and rods 32 for activating the rear side arm 26, allows the seat frame to move up and down freely. The left and right rods 32 are located at the outside of the side frames 10 respectively with cover members 62 provided further outside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat frame provided with a seat vertical adjusting device.

[0002]

2. Description of the Related Art Conventionally, Japanese Utility Model Laid-Open Publication No. 5-35458 discloses that a plurality of left and right springs are arranged in front and rear on the left and right sides of a seat frame. And a front arm between a mounting frame movable or fixed to the vehicle body, a rear arm between the rear side of the seat frame and the mounting frame, and a vertical mechanism having a rod for operating the rear arm so as to be freely movable up and down. The mounted configuration is known.

[0003]

In the known example, since the sector gear and the interlocking arm are arranged below the seat frame, the overall thickness of the seat is increased.
There is a problem that the height of the cushion upper surface is increased. Therefore, the height of the cushion upper surface is reduced while the overall thickness of the seat is reduced while preventing the interference of the skin member and the cushion material by the arrangement of the arms and rods of the vertical mechanism.

[0004]

The object of the present invention is to provide a seat having an overall thickness, to make the interior space effective, to ensure the operation, to improve the durability, and to facilitate the assembly.

[0005]

According to the present invention, the front sides of a pair of left and right side frames 10 are connected to each other by a front frame 2 formed in the shape of a rectangular dish that is long on the left and right, and the rear side of the side frames 10 is rearward. A plurality of spring bodies 15 in the left-right direction are arranged side by side between the front frame 2 and the rear frame 18 to form the seat frame 1. The seat frame 1 is moved to the vehicle body. A vertically movable mechanism 22 is attached to a freely or fixedly mounted mounting frame 21 by a vertical mechanism 22. The vertical mechanism 22 includes a front arm 23 between the front side of the side frame 10 and the mounting frame 21, and a side frame 1.
0, a rear arm 26 between the rear side and the mounting frame 21,
The left and right rods 32 are located outside the side frames 10 respectively, and at least the upper part is bent inward outside the left and right side frames 10. This is a vehicle seat frame provided with a vertical adjustment device for a seat, provided with a cover member 62 formed in a vertical plate shape having a cover upper and lower plate portion 64 formed. In the present invention, the upper and lower cover portions 64 of the cover member 62 are
, The upper inside of the side frame 10 is formed into a bent surface 68, and the cover member 62 is provided with a vehicle seat frame with a seat vertical adjustment device which is positioned outside the edge of the bent plate portion 11. It was done. In the present invention, the side frame 10 is provided at a desired peripheral edge of the cover member 62.
A recess 65 formed by recessing the cover vertical plate portion 63 so as to open the peripheral side is provided in the center of the periphery of the bottom 66 in parallel with the bottom portion 66, and each recess 65 is provided in the side frame 10. This is a vehicle seat frame with a fixed seat vertical adjustment device. The present invention relates to a cover member 6.
A vehicle seat frame with a seat up-and-down adjustment device is provided on the side of 2 with a skin locking member 70 formed of a steel wire member in a U-shape with an open upper side.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Is a seat frame of a vehicle seat, and a front frame 2 is provided on a front portion of the seat frame 1.
Is provided. The front frame 2 is formed in a rectangular dish that is long in the left and right directions by a bottom plate 3, left and right side plates 4 provided on the left and right sides of the bottom plate 3, and front and rear plates 5 provided on the front and rear sides. The bottom plate 3 of the embodiment is provided with a ridge 6 that rises upward in the front and rear middle part, and a rear ridge 7 that protrudes downward is provided on the rear side of the ridge 6 to reinforce. Absent. A pair of left and right side frames 10 is provided on both left and right sides of the front frame 2. The side frame 10 is formed by elongating a vertical plate-like member in the front-rear direction, and the side frame 10 and the front frame 2 are fixed to each other by any means such as welding or bolting. A bent plate portion 1 that is bent outward at a substantially right angle on an upper portion of the side frame 10.
1 is provided, and a bracket 12 for mounting a reclining device is mounted on a rear portion of the side frame 10.

The left and right side frames 10 on the rear side of the front frame 2 have a plurality of spring bodies 1 at predetermined intervals in the front and rear.
5 Attach both ends. The spring body 15 is formed by a zigzag spring, and both ends of the spring body 15 are
To lock. Although the spring body 15 of the embodiment is locked in the spring mounting hole 16, the mounting configuration is arbitrary and is not a requirement. A rear frame 18 is provided behind the rearmost spring body 15 of the plurality of spring bodies 15 arranged in parallel. The rear frame 18 is attached to the side frame 10 by bolts 19 by bending a plate member in the left-right direction. Reference numeral 20 denotes a mounting hole provided in the side frame 10.

The seat frame 1 is composed of a front frame 2, left and right side frames 10, and a rear frame 18, and the front frame 2 is positioned substantially below the thighs of the seated person. The rear frame 18 is positioned behind the so-called hip point, which is the position of the center of gravity of the seated person, and at the rear side which does not affect the seating feeling of the seated person. A plurality of spring bodies 15 in the left-right direction are arranged side by side between the frames 18. Therefore, strength is secured by arranging the front frame 2 and the rear frame 18 before and after, respectively, with little effect on the feeling of sitting, and in particular, by providing the front frame 2 formed in a dish shape below the thigh of the seated person. The rigidity is improved, and the other parts are supported by the side frames 10 and the rear frame 18, thereby reducing the weight of the seat frame 1.

Thus, the seat frame 1 is vertically attached to an attachment frame 21 described later. The front arm 2 of the up / down mechanism 22 is provided on the front side of the side frame 10.
The upper part of 3 is mounted on the shaft 24. The lower part of the front arm 23 is attached to the front outer surface of the mounting frame 21 by a shaft 25. An intermediate portion of a rear arm 26 is rotatably mounted on an outer surface of a rear portion of the side frame 10 by a mounting member 30. One end of the rear arm 26 is attached to the mounting frame 21.
And a rear end of a rod 32 is mounted on the other end of the rear arm 26 by a shaft 33. Rod 3
The front end 2 is located above the front arm 23 and is mounted on the sector gear 34 by the shaft 27. The sector gear 34 is rotatably mounted on the side frame 10 by an interlocking shaft 35, and the sector gear 34 meshes with a gear 37 fixed to a shaft 36 of a brake mechanism 38. The brake mechanism 38 is publicly known, and although not shown, the handle 39 is rotated forward and reverse to rotate the shaft 36, but the rotation of the shaft 36 is locked. The side frame 10 is provided with a bulging portion 27 that is depressed inward, a gear 37 is located on the outer surface side of the bulging portion 27, and a shaft 36 of a brake mechanism 38 is mounted and mounted on the back side of the gear 37. The inner sector gear 34 and the outer gear 37 mesh with each other via the window 28 provided in the protrusion 27. Therefore, the mounting space for mounting the brake mechanism 38 is small, and the cover member 62 described later can be formed flat. Further, since the brake mechanism 38 is attached to the outside of the side frame 10, the attachment work is also facilitated, which is preferable.

The front arm 23 and the rear arm 26
And a rod 32, the front arm 23, the rear arm 26, and the rod 32 are each provided as a pair on the left and right sides. The sector gear 34 is mounted on the one rod 32, while the interlocking arm is mounted on the other rod 32. The interlocking arm 40 is fixed to the interlocking shaft 35, and the interlocking shaft 35 is positioned below the ridge 6 of the bottom plate 3. Therefore, the ridge 6 provided with the vertical mechanism 22 is a member for reinforcing and securing a space for mounting the interlocking shaft 35. In addition, since the rear protrusion 7 protruding downward is provided at the rear side of the protrusion 6, the interference between the cushion material 42 and the interlocking shaft 35 is prevented. The sector gear 34 and the interlocking arm 40 are fixed to the interlocking shaft 35 by welding in advance, and the sector gear 34 and the interlocking arm 40 are connected to the side frame 10.
The both ends of the interlocking shaft 35 are positioned inside the side frame 1
The sector gear 34 and the interlocking arm 40 are attached to the outer rod 32 through a window 41 provided in the side frame 10. Therefore, the window 41 is formed in an arc shape in accordance with the movement of the shaft 27. That is, the space below the front frame 2 is prevented from interfering with the cushion material 42 by the front frame 2,
The sector gear 34 and the interlocking arm 40 are welded and fixed to the interlocking shaft 35 in advance while avoiding interference with the side frame 1.
It is easy to assemble by locating inside 0.

A base of a rotating side engaging member 44 extending mainly forward is fixed to one of the right and left sides of the interlocking shaft 35, and an engaging groove 45 is formed on the upper end side of the rotating side engaging member 44. To form An engagement portion 47 formed by bending one end of the torsion spring 46 into a U-shape is engaged with the engagement groove 45. The other end of the torsion spring 46 is bent backward in an L-shape to form an L-shaped engaging portion 48, which engages with a fixed-side engaging member 49 provided on the side frame 10. Let it. The fixed side engaging member 49 is provided with the downward engaging groove 5 facing downward.
0 and the upward engaging groove 51 behind the downward engaging groove 50. First, the L-shaped engaging portion 4
8 while being inserted into the upward engaging groove 51 of the fixed-side engaging member 49 while inserting the vertical line portion 52 of FIG.
8 while pressing the horizontal line portion 53 downward,
Is engaged with the downward engaging groove 50, the L-shaped engaging portion 48 is stably disengaged from the fixed-side engaging member 49 by the elastic force of the L-shaped engaging portion 48.
The engagement is completed by engaging the engagement portion 47 of FIG. 6 with the engagement groove 45 of the rotation side engagement member 44. In addition, the said attachment order has shown an example, and it is not limited to this.

Thus, the shaft mounting portion of the rear arm 26 and the mounting portion of the rear frame 18 are concentrically mounted in the mounting hole 20 of the same one side frame 10. That is, the mounting member 30 is formed of a cylindrical member, a screw groove 54 is formed on the inner peripheral surface, and one end of the mounting member 30 is configured to be crushed when caulking is performed.
And the rear arm 2 is attached to the outer periphery of the inserted mounting member 30.
6 is fitted in the mounting hole 60 of the rear arm 2 in this state.
6 is rotatably mounted by caulking, and then the bolt 19 is screwed into the mounting member 30 so that the rear frame 1
8 is installed. Therefore, since the rear frame 18 and the rear arm 26 are attached to one attachment hole 20 provided in the side frame 10 with the bolt 19, the space can be effectively used, and the seat frame 1 can be downsized. Since the cross-sectional loss of the side frame 10 can be reduced, the strength can be ensured, which contributes to a reduction in size and weight. In this regard, a nut may be provided without forming the screw groove 54 on the inner peripheral surface of the mounting member 30. However, if the screw groove 54 is formed, the nut can be omitted. Further, the direction of insertion of the mounting member 30 may be either inside or outside, and is not limited to the embodiment. However, if it is inserted from the inside and the outside is caulked, the amount of projection outside can be reduced, and interference with the rotation of the arm etc. Can be avoided. 55 is a washer, 56 is a bent portion at the tip of the mounting member 30 when crimped, and 57 is a flange at the base of the mounting member 30.

FIG. 16 shows another embodiment, in which a slit 61 is formed so that each bent portion 56 at one end of the mounting member 30 is opened and crushed substantially uniformly. Thus, the cover members 6 are provided outside the left and right side frames 10.
2 is provided. The cover member 62 includes a cover vertical plate 63 located outside the side frame 10 at an interval not interfering with the operation of the vertical mechanism 22, and a cover upper and lower plate bent inwardly up and down of the cover vertical plate 63. The section 64 is formed in a U-shaped cross section. A concave portion 65 in which the cover vertical plate portion 63 is recessed is formed at a desired peripheral edge position of the cover member 62. The recess 65 has a bottom 66 parallel to the side frame 10.
Has an upright wall 67 on the center side of the periphery of the rim, but is formed so as to be open on the peripheral side, and the bottom 66 of each concave portion 65 is brought into contact with the outer surface of the side frame 10 to arbitrarily set rivets, bolts, welding, etc. Fix by means. That is, the upright wall 67 is not provided on the entire periphery of the bottom portion 66, and the peripheral side is opened, thereby avoiding deep drawing press working and facilitating the working.

The upper and lower cover portions 64 of the cover member 62 are located below the bent plate portion 11 of the side frame 10, and the cushion material 42 comes into contact with the bent surface 68 inside the upper portion of the side frame 10. Thus, the sliding contact resistance is reduced. The bending surface 68 is formed by press working or the like,
In this case, it is formed so as to be an arc surface, so that a so-called edge does not stand and form a sharp corner. In addition, the cover vertical plate portion 63 is located outside the edge of the bent plate portion 11 to reduce the chance of contact with the end surface of the bent plate portion 11. The cover member 62 is formed to have a length that surrounds the vertical mechanism 22 from the inside of the front end of the side frame 10 to the front side of the shaft-attached portion of the rear arm 26 and the rod 32. Avoid interference.

Thus, the cover member 62 is provided with the skin member 6.
A skin locking member 70 for locking the terminal portion 9 is provided. The skin locking member 70 is formed of a steel wire member in a U-shape with an upper side opened, and both right and left ends are fixed by welding. In this case, it is important that the entire skin locking structure is not the main point, but that the skin locking member 70 is provided on the cover member 62.
The skin locking configuration other than 0 is optional. The cover member 62 has a cover locking hole 7 for attaching a resin cover (not shown) located outside the cover member 62.
1 is provided. Thus, the spring body 15 is positioned a predetermined distance below the upper edge of the side frame 10. Therefore, in the embodiment, the spring mounting hole 16 for attaching the spring body 15 is provided.
Are positioned a predetermined distance below the upper edge of the side frame 10, but other mounting methods may be used. The spring body 15 is not attached to the upper surface of the side frame 10 but is attached to the upper and lower middle portions of the side frame 10, thereby reducing the height of the upper surface of the cushion member 42. That is, since the rod 32 of the vertical mechanism 22 is positioned outside the side frame 10 and there is no movable member inside the side frame 10, there is no interference with the spring body 15 and the cushion material 42. 10 requires a predetermined height (thickness) in order to secure rigidity, the cushion material 42 also needs a predetermined thickness (height), and the upper surface height of the cushion material 42 is based on the position of the spring body 15. Therefore, when the position of the spring body 15 is high, the upper surface height of the cushion material 42 is high, and when the position of the spring body 15 is low, the upper surface height of the cushion material 42 is low.

In this case, the upper edge of the side frame 10 is formed in an arc surface having a lower front portion, then the front portion is highest, and then gradually lower than the highest height portion, and the rear side from the hip point is formed. The height of the bracket 12 is increased again for reasons such as mounting. That is, when the upper edge of the side frame 10 is high, the holding property of holding the seated posture of the occupant is high, but the holding property is low, but the getting-on / off property is low. Sex is higher. Therefore, in principle, the upper edge of the side frame 10 is set high on the front side and low on the rear side.
5 does not need to be taken into account, so the degree of freedom in design is improved,
Improves both hold and getting on and off, and improves seating feeling.

The mounting frame 21 on which the seat frame 1 is mounted is optional, but the front and rear intermediate portions of the pair of left and right side mounting frames 75 are connected to the intermediate connecting member 76.
Connect with. The intermediate connecting member 76 includes two shaft members 7.
The left and right end portions 78 and 79 of each of 7 are attached to the mounting frame 21 with bolts 80 at predetermined intervals in front and rear,
The intermediate portion of the two shaft members 77 is bent at one or a plurality of positions, and abutted to each other to be fixed by welding 81. In the embodiment, one of the front and rear shaft members 77 is constituted by a linear shaft member, the middle portion of the other shaft member 77 is bent in a U-shape, and the bent portion 82 contacts the one shaft member 77. Although the welding and fixing 81 are performed, the welding and fixing 81 may be performed by bending both of them and abutting the middle portions of each other. A rear mounting frame 83 is provided at the rear of the side mounting frame 75. The rear mounting frame 83 is formed by bending a plate member having a U-shaped cross section so that the middle portion is high and the left and right sides are low, and both right and left ends are bent rearward to form the mounting portion 84.
The mounting portion 84 is provided with two mounting holes 85, and each mounting hole 85
Are arranged obliquely, and bolts or shafts 86 are inserted into the mounting holes 85 and fixed. That is, by arranging the two mounting holes 85 diagonally, the space L can be secured in the front, rear, up and down directions,
The distance L improves the load supporting strength. 87 is a cover locking hole. 88 is a weld nut and 89 is a slide rail.

[0018]

Next, the operation will be described. The seat frame 1 of the vehicle seat has a rectangular bottom plate 3 that is long on the left and right.
A front frame 2 formed in a dish shape by right and left side plates 4 provided on the left and right sides of the bottom plate 3 and front and rear plates 5 provided on the front and rear sides, side frames 10 on both left and right sides of the front frame 2, and a front frame 2. Since it is constituted by the rear spring body 15 and the rear frame 18 behind the spring body 15, the weight can be reduced while having sufficient rigidity. In other words, if the whole is composed of a dish-shaped frame, the rigidity is high, but the weight increases,
Below the hip point, left and right spring bodies 15 are arranged in front and rear to secure cushioning properties, and the front frame 2 is minimized to make the whole lighter. The rear frame 18 ensures rigidity. In particular, by arranging the dish-shaped front frame 2 on the front side, the rigidity against a load sinking by a seated person at the time of a collision or the like is ensured to cope with a so-called submarine phenomenon. .

Therefore, rigidity is secured by the front frame 2, the rear frame 18, and the left and right side frames 10, and the cushioning property can be secured by providing the spring body 15 between the front and rear front frames 2 and the rear frame 18. The rational arrangement of the right person in the right place can reduce the weight. In particular, since the spring body 15 is formed by arranging spring materials in the left-right direction in front and rear, the cushioning property is also improved. In this case, since the spring body 15 is located at a predetermined distance below the upper edge of the side frame 10, by attaching the spring body 15 to the upper and lower middle portion of the side frame 10, the upper surface height of the cushion material 42 is accordingly reduced. make low.

Thus, the spring body 15 is connected to the side frame 10.
Is not attached to the upper edge, there is no restriction on the upper edge shape of the side frame 10 due to the vertical mounting positions of the front and rear spring bodies 15. Therefore, the degree of freedom in designing the upper edge shape of the side frame 10 is improved, thereby improving the seating feeling. That is, when the upper edge of the side frame 10 is high, the holding property of holding the seated posture of the occupant is high, but the riding property is low, but when the upper edge is low, the holding property is reduced, but the riding property is low. However, it is possible to design with consideration for this, and the seating feeling is improved. In the embodiment, the shape of the side frame 10 is lowered at the forefront to improve the operability such as pedal depression from the hold, and the hold is secured by making the front portion next to the foremost the highest. Next, by gradually lowering the arcuate surface from the maximum height portion, the ease of getting on and off is improved, and the rear side is raised from the hip point, so that the bracket 12 can be easily mounted. Therefore, both the hold property and the getting on / off property are improved by the shape of the upper edge of the side frame 10,
Improve sitting feeling.

Further, the side frame 10 reliably supports the seating load of the cushion member 42 from the side surface, and interference (thrusting) can be avoided at unnecessary portions, so that not only the upper surface shape of the cushion but also the frame shape can be held. Since it has a significant effect on the comfort and getting on and off, the seat shape is improved by the liberalization of the frame shape in combination with the upper surface shape of the cushion. Further, since the frame shape can be liberalized only by lowering the mounting position of the spring body 15, the cushion effect is improved without increasing the number of parts and the cost, and the seating feeling is improved. The seat frame 1 is vertically movable with respect to the mounting frame 21 by the vertical mechanism 22. The vertical mechanism 22 includes a front arm 23 between the front side of the side frame 10 and the mounting frame 21 and a side frame 23. 10 comprises a rear arm 26 between the rear side of the mounting frame 21 and a rod 32 for operating the rear arm 26.
Is easily mounted on the outer surface of the front side by the shaft 25. In addition, since the rear arm 26 is attached to the inside of the mounting frame 21 by the shaft 31, the space on the outer surface side of the rear mounting frame 21 can be widened, and the mounting of the reclining device or the like is facilitated.

When the handle 39 of the brake mechanism 38 is turned, the shaft 36 rotates.
The gear 37 is rotated by the
Is rotated about the interlocking shaft 35, the interlocking shaft 35 rotates the interlocking arm 40, the sector gear 34 and the interlocking arm 40 move the rod 32 back and forth, and the back and forth movement of the rod 32 turns the rear arm 26. Then, the seat frame 1 is moved up and down with respect to the mounting frame 21. In this case, the interlocking shaft 35 for operating the left and right rods 32 is located below the ridge 6 of the bottom plate 3 of the front frame 2. Can be secured, and the vertical width of the entire seat frame 1 can be reduced. In addition, since the rear protrusion 7 protruding downward is provided on the rear side of the protrusion 6, the cushion material 42 is provided.
And the interlocking shaft 35 can be prevented, and the operation can be further ensured.

Further, the sector gear 34 and the interlocking arm 40 are fixed to the interlocking shaft 35 in advance by welding, and both ends of the projecting interlocking shaft 35 of the sector gear 34 and the interlocking arm 40 are mounted on the side frame 10 and mounted. The interlocking shaft 35, the sector gear 34, and the interlocking arm 40 can be easily mounted. The rod 32 is positioned outside the side frame 10, but the side frame 10 is provided with the window 41, so that the inner sector gear 34 and the interlocking arm 40 are connected to the outside through the window 41. Rod 32 can be connected. Therefore, the sector gear 34 and the interlocking arm 40 can be arranged below the front frame 2 which does not interfere with the cushion member 42, and the rod 32 can be arranged outside the side frame 10 which does not interfere with the spring body 15, so that a rational arrangement can be achieved. .

The base of the rotating side engaging member 44 having the engaging groove 45 formed on the top surface of the distal end is fixed to one end of the interlocking shaft 35, and is fixed to the side frame 10 at the other end of the interlocking shaft 35. Is provided with a fixed side engaging member 49 having a downward engaging groove 50 close to the interlocking shaft 35 and an upward engaging groove 51 far away from the interlocking shaft 35. One end of the torsion spring 46 is provided in a U-shaped engaging portion 47, and the other end is provided. Is L
Since each of the L-shaped engaging portions 48 bent backward in a mold shape is formed, the vertical line portion 52 of the L-shaped engaging portion 48 is inserted into the upward engaging groove 51 of the fixed side engaging member 49. And then L
The L-shaped engaging portion 48 is fixed by the elastic force of the L-shaped engaging portion 48 by engaging the downward engaging groove 50 of the fixed-side engaging member 49 while pressing the horizontal line portion 53 of the mold engaging portion 48 downward. Then, the engagement portion 47 of the torsion spring 46 is engaged with the engagement groove 45 of the rotation-side engagement member 44, and the mounting is completed. Accordingly, the torsion spring 46 urges the rotation side engaging member 44 of the interlocking shaft 35 in the counterclockwise direction to reduce the operation load in the upward movement operation of the up-and-down mechanism 22. At the time of insertion, the elasticity does not act at the time of insertion, and only when the engaging portion 47 is engaged, it is sufficient to assemble it against the elasticity, which greatly facilitates the mounting work.

The rear arm 26 of the components of the vertical mechanism 22 is mounted in the mounting hole 20 of the side frame 10 which is the same as the mounting portion of the rear frame 18 of the component of the seat frame 1. Therefore, the space can be effectively used, the seat frame 1 can be reduced in size, and the cross-sectional loss of the side frames 10 can be reduced, so that the strength can be secured and the size and weight can be reduced accordingly. That is, the mounting member 30 having the screw groove 54 provided on the inner peripheral surface of the cylindrical member is formed, and one end of the mounting member 30 is configured to be crushed so as to be able to be crimped. 20, the mounting hole 60 of the rear arm 26 is fitted to the outer periphery of the inserted mounting member 30, and in this state, the rear arm 26 is rotatably mounted by caulking.
The rear frame 18 is mounted by screwing the bolt 19 into the inside of the rear frame 18. Accordingly, one mounting hole 20 and one bolt 19 provided in the side frame 10 allow the rear frame 18 to be mounted.
And the rear arm 26 can be attached.

In another embodiment shown in FIG. 16, the slit 61 is formed so that one end of the mounting member 30 is opened substantially uniformly and crushed, so that one end of the mounting member 30 spreads thinly. When this is arranged on the outer surface of the rear arm 26, it does not interfere with the operation of the rear arm 26, which is preferable. A cover member formed on the outer side of the left and right side frames 10 by a cover vertical plate portion 63 and a cover upper and lower plate portion 64 bent inwardly up and down of the cover vertical plate portion 63 into a “U” cross section. Since 62 is provided, the upper part of the front arm 23 of the vertical mechanism 22, the rear arm 26 and the side part of the rod 32 can be surrounded, preventing contact and biting with foreign matter, and ensuring operation. Cushion material 42 and vertical mechanism 2
2 is also prevented, and the durability is improved.

Cover upper and lower plate 6 above cover member 62
4 is located below the bent plate portion 11 of the side frame 10 and the upper inside of the side frame 10 is formed on the bent surface 68, so that the cushioning material 42 comes into contact with the bent surface 68, so that the sliding contact resistance is reduced. Reduce and improve durability. Further, since the cover vertical plate portion 63 is located outside the edge of the bent plate portion 11, the chance of contact with the end surface of the bent plate portion 11 is reduced, and the sliding contact resistance with the cushion material 42 is reduced. Not only to improve durability but also to improve the workability of assembly.

As described above, the cover member 62 has the cover upper and lower plate portions 64 above the cover member 62 and the side frame 1.
Although it is positioned below the bent portion 11 of the cover member 62, the cover member 62 has an upright wall 67 at a desired peripheral edge at the center of the periphery of the bottom 66 parallel to the side frame 10, but the peripheral edge is Since the concave portions 65 are formed by denting the cover vertical plate portions 63 so as to be opened, the bottom portions 66 of the concave portions 65 are provided.
Is brought into contact with the outer surface of the side frame 10 and fixed by any means such as rivets, bolts, and welding. Therefore,
By not providing the upright wall 67 on the entire periphery of the bottom portion 66 and opening the peripheral side, it is possible to avoid deep drawing press working and facilitate the working. Thus, on the side of the cover member 62, since the skin locking member 70 formed of a steel wire member in a U-shape with an open upper side is provided, the locking operation of the terminal of the skin can be extremely easily performed, Also, it can be processed beautifully. In this case, since both end sides of the skin locking member 70 are fixed to the cover member 62 by welding, the welding area can be increased, and not only the fixing operation is facilitated, but also the fixing strength is improved. That is, the side of the side frame 10 has holes for mounting the vertical mechanism 22 and reinforcing ribs, and the mounting area is limited so that the welding area cannot be increased. Since there are few restrictions, it is possible to increase the welding area.

Similarly, a resin cover (not shown) is provided outside the cover member 62 on the side of the side frame 10.
Since the cover locking hole 71 for mounting the resin cover is provided in the cover member 62, there are few restrictions on the location where the cover locking hole 71 is formed. The manufacturing and assembly are easy, and the appearance after the resin cover is attached is improved. However, as described above, when the mounting position of the spring body 15 is lower than the upper edge of the side frame 10, the height of the upper surface of the cushion material 42 can be reduced and the seating feeling is improved, but the vertical mechanism 22 is provided. Even if the rod 32 is positioned outside the side frame 10 and does not interfere with the spring body 15, a similar effect can be expected. Also, the cover member 62
Therefore, interference with the cushion member 42 and the skin member can be avoided, and these can be combined to achieve a rational arrangement.

The mounting frame 21 on which the seat frame 1 is mounted is a pair of left and right side mounting frames 75.
Are connected by an intermediate connecting member 76. The intermediate connecting member 76 has two left and right ends 78 and 79 of two shaft members 77 at predetermined intervals in front and rear, respectively, and a bolt 80
Are screwed into the screw holes of the left and right end portions 78 and 79, and attached to the mounting frame 21. The intermediate portion of the two shaft members 77 is bent at one or a plurality of positions and brought into contact with each other to be welded and fixed.
1, two shaft members 77 are the strength members, unlike the case where they are simply connected by two shaft members.
Strongly supports loads such as twisting. Therefore, the mounting frame 21 can be configured simply by mounting the rear mounting frame 83 at the rear of the left and right side mounting frames 75.

In this case, the rear mounting frame 83 is provided with two mounting holes 85 diagonally in the mounting portion 84, and the mounting holes 8
Since the shaft 86 and the like are inserted into the frame 5 and fixed to the side mounting frame 75, the mounting strength is improved. That is, when arranged vertically, the load in the vertical direction is supported, but the strength against the load in the front-rear direction cannot be expected so much. When arranged horizontally, the load in the front-rear direction is supported, but the strength against the load in the vertical direction can be supported. Can not be expected, but because it is arranged diagonally, it firmly supports loads from any direction including front and rear and up and down, eliminating the need for many front and rear and up and down mounting holes and parts. By doing so, the rigidity of the rear mounting frame 83 is not reduced, and the mounting operation is simplified. Further, since the left and right sides of the rear mounting frame 83 are low and the middle portion is high, the rear seat frame 83 is improved in the ability of the rear occupant to enter the foot. Further, since the cover mounting holes 87 are provided in the rear mounting frame 83, the cover can be easily mounted.

[0032]

According to the present invention, the front sides of a pair of left and right side frames 10 are connected to each other by a front frame 2 formed in a rectangular dish shape long in the left and right directions, and the rear side of the side frames 10 is connected to the rear frame 1.
8 and a plurality of left and right spring bodies 15 are juxtaposed between the front frame 2 and the rear frame 18 to form the seat frame 1. The seat frame 1 is movable to the vehicle body or A vertically movable mechanism 22 is attached to the fixed mounting frame 21 so as to be vertically movable.
Are a front arm 23 between the front side of the side frame 10 and the mounting frame 21, a rear arm 26 between the rear side of the side frame 10 and the mounting frame 21, and a rod 32 for operating the rear arm 26. The left and right rods 32 are respectively positioned outside the side frame 10, and the outside of the left and right side frames 10 has a cover upper and lower plate portion 64 having at least an upper portion bent inward. Since the vehicle seat frame is provided with the seat up-down adjustment device provided with the plate-shaped cover member 62, interference between the rod 32 and the skin member or the cushion material can be prevented, and the operation can be reliably performed. According to the present invention, the cover upper and lower plate portions 64 on the upper side of the cover member 62 are positioned below the bent plate portion 11 of the side frame 10, and the upper inside of the side frame 10 is formed on the bent surface 68. Is a vehicle seat frame with a seat up / down adjustment device positioned outside the edge of the bent plate portion 11, so the upper inner side of the side frame 10 that is particularly in contact with the cushioning material is a bent surface 68. Damage to the cushion material can be prevented, and durability is improved. The present invention has an upright wall 67 in the center of the periphery of the bottom 66 parallel to the side frame 10 at the desired position of the periphery of the cover member 62, but the cover vertical plate 63 is opened so that the periphery is open. Since the recessed portions 65 are provided as recesses, and each recessed portion 65 is a vehicle seat frame with a seat up / down adjustment device fixed to the side frame 10, not only is the mounting of the cover member 62 easy, but also , And can be easily manufactured. The present invention provides a vehicle seat frame with a seat up-and-down adjustment device provided with a skin locking member 70 formed of a steel wire member in a U-shape with an open upper side on the side of the cover member 62. Therefore, the work of locking the terminal of the epidermis can be made extremely easy, and it can be processed beautifully.

[Brief description of the drawings]

FIG. 1 is a side view of a seat frame, a mounting frame, and a slide rail.

FIG. 2 is an overall perspective view.

FIG. 3 is a partially enlarged view of FIG. 2;

FIG. 4 is a partially enlarged view of FIG. 2;

FIG. 5 is a side view of the seat frame.

FIG. 6 is a perspective view of an arm mounting position of the vertical mechanism.

FIG. 7 is a sectional view of a brake mechanism.

FIG. 8 is a sectional view of an interlocking shaft portion.

FIG. 9 is a diagram showing a positional relationship between an interlocking shaft and a front frame.

FIG. 10 is a diagram showing a positional relationship between an interlocking shaft and a front frame.

FIG. 11 is a side view of the seat frame.

FIG. 12 is a perspective view showing a state in which a torsion spring is mounted.

FIG. 13 is a side view (the position of the center portion of the spring is shifted vertically).

FIG. 14 is a perspective view of an attachment portion between the arm and the frame.

FIG. 15 is a sectional view of the same.

FIG. 16 is a view showing another embodiment of the mounting member.

FIG. 17 is a relationship diagram with a cushion material.

FIG. 18 is an exploded perspective view of the mounting frame.

FIG. 19 is a perspective view of an intermediate connecting member of the mounting frame and a rear mounting frame.

FIG. 20 is a side view of a mounting portion of the rear mounting frame.

[Explanation of symbols]

1 ... seat frame, 2 ... front frame, 3 ... bottom plate,
4 left and right side plates, 5 front and rear plates, 6 ridges, 10 side frames, 11 bent plates, 12 brackets, 15 spring bodies, 16 spring mounting holes, 18 rear frames, 19 …
Bolt, 20 mounting hole, 21 mounting frame, 22 vertical mechanism, 23 front arm, 24 axis, 25 axis, 26
... Rear arm, 30 ... Mounting member, 31 ... Shaft, 32 ... Rod, 33 ... Shaft, 34 ... Sector gear, 35 ... Interlocking shaft, 36
... shaft, 37 ... gear, 38 ... brake mechanism, 39 ..., 40
... Linking arm, 41 ... Window, 42 ... Cushion material, 44
... Rotary side engaging member, 45 ... engaging groove, 46 ... torsion spring, 47 ... engaging portion, 48 ... L-shaped engaging portion, 49 ... fixed side engaging member, 50 ... downward engaging groove, 51 ... upward Engagement groove, 5
2 vertical line portion, 53 horizontal line portion, 54 screw groove, 60 mounting hole, 61 slit, 62 cover member, 63 cover vertical plate portion, 64 cover upper and lower plate portion, 65 concave portion, 66 ... Bottom part, 67 ... standing wall, 68 ... bent surface, 70 ... skin locking member, 71 ... cover locking hole, 75 ... side mounting frame,
76: intermediate connecting member, 77: shaft member, 78: end portion, 80
... bolts, 81 ... welding fixation, 82 ... bent parts, 83 ... rear mounting frame, 84 ... mounting parts, 85 ... mounting holes, 86 ...
Shaft, 87: Cover locking hole.

Claims (4)

[Claims] 1. A front side of a pair of left and right side frames 10 is
The left and right sides of the side frame 10 are connected by a rear frame 18, and the front frame 2 and the rear frame 18 are connected to each other by a front frame 2 formed in a rectangular dish shape that is long on the left and right.
A plurality of spring bodies 15 in the left-right direction are arranged side by side to constitute the seat frame 1. The seat frame 1 is vertically movable by a vertical mechanism 22 with respect to a mounting frame 21 which is movable or fixed to the vehicle body. The mounting and lifting mechanism 22 includes a front arm 23 between the front side of the side frame 10 and the mounting frame 21 and a rear side of the side frame 10 and the mounting frame 2.
1 and a rod 32 for operating the rear arm 26. The left and right rods 32 are respectively positioned outside the side frame 10, and the left and right side frames 10 A vehicle seat frame with a seat up-and-down adjustment device provided on the outside with a cover member 62 formed in a vertical plate shape having a cover upper and lower plate portion 64 having at least an upper portion bent inward. 2. The cover member according to claim 1, wherein:
The upper and lower cover upper and lower plate portions 64 are located below the bent plate portion 11 of the side frame 10, the upper inside of the side frame 10 is formed on a bent surface 68, and the cover member 62 is
A seat frame for a vehicle with a seat up-down adjustment device located outside the edge of the vehicle. 3. The side frame 10 according to claim 1, wherein a peripheral edge of the cover member 62 is positioned at a desired position.
A recess 65 formed by recessing the cover vertical plate portion 63 so as to open the peripheral side is provided in the center of the periphery of the bottom 66 in parallel with the bottom portion 66, and each recess 65 is provided in the side frame 10. Vehicle seat frame with fixed seat up / down adjustment device. 4. The method according to claim 1, 2 or 3.
, A seat frame for a vehicle with a vertical adjustment device for a seat, provided with a skin locking member 70 formed of a steel wire member in a U-shape with an open upper side on a side portion of the cover member 62.