JPH0519241Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a double shaft bearing structure for seat adjustment, and in particular, to a dual shaft bearing structure for seat adjustment for releasing the locking mechanism of a sliding seat for an automobile. Regarding the bearing structure.

[Prior Art] In general, a sliding seat S for an automobile has a seat cushion (see Figs. 1 to 4, the same applies hereinafter) 1
, a seat back 2 , and a base 3 on which the seat cushion 1 is slidably installed on a floor 10 , and further includes a slide mechanism 4 , a slide lock mechanism 5 , and a slide release mechanism 6 . , rotation mechanism 7, and rotation lock mechanism 8
and a rotation release mechanism 9.

It is conceivable that such a sliding seat S for an automobile is provided with a sliding mechanism 4 and a rotation mechanism 7 as seat adjustment mechanisms, but if it is made to function as a rotating seat, a slide for releasing the slide lock mechanism 5 may be provided. There are restrictions on the structure of the release mechanism 6.

Therefore, it is possible to have a dual shaft structure in which the first seat adjustment shaft 22 connected to the slide mechanism 4 is the inner shaft, and the second seat adjustment shaft 34 connected to the rotation mechanism 7 is the outer shaft. Conceivable.

However, in such a dual shaft structure, at the support part with the seat frame 41, for example,
A double bearing structure as shown in FIG. 12 is required.

That is, a first support plate c provided with a bearing part e for pivotally supporting the sheath shaft (outer shaft) 34, and an inner shaft 22.
A second support plate d provided with a bearing part f for pivotally supporting the second support plate d is formed as a separate flange and attached to the seat frame 41.

[Problem that the invention attempts to solve]

However, in such a conventional double shaft bearing structure for seat adjustment, the first and second support plates c and d are composed of two parts, which increases the number of parts and makes it difficult to mass produce and reduce cost. There is a problem that it is disadvantageous.

The present invention aims to solve these problems, and aims to provide a dual-shaft bearing structure for seat adjustment that can be constructed in one piece.

[Means for solving problems]

Therefore, the dual shaft bearing structure for seat adjustment of the present invention includes a first seat adjustment shaft extending inward of the seat to be connected to the first and second adjustment mechanisms of the seat; In a double shaft structure in which the first seat adjustment shaft is coaxially arranged and a second seat adjustment shaft formed as a sheath shaft is provided, the above-mentioned first and second bearings for pivotally supporting the first and second seat adjustment shafts, respectively, are provided, and first and second support plates support the first and second bearings; , a connecting plate that interconnects one end of each of the first and second support plates, and the other end of one of the first and second support plates and the outer side of the frame of the sheet. It is characterized in that the mounting plate connecting the bearing plate and the bearing plate are integrally bent and formed as a bearing plate.

[Effect]

In the seat adjustment dual shaft bearing structure of the present invention described above, in the integrally bent bearing plate, the first bearing supported by the first support plate pivotally supports the first seat adjustment shaft. At the same time, the second bearing supported by the second support plate pivotally supports the second seat adjustment shaft.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Figures 1 to 11 show a bearing structure of a double shaft for seat adjustment as an embodiment of the present invention.
Figures 1 to 3 are a front view, a side view, and a plan view showing each base broken away, Figure 4 is a perspective view of the seat slide mechanism showing its overall configuration, and Figure 5 is its rotation lock. 6a and 6b are enlarged perspective views of the bearing structure, FIG. 7 is a perspective view of the main parts of the slide lock mechanism and slide release mechanism, and FIG. 8 is a perspective view of the slide lock mechanism. FIG. 9 is a side view showing the action;
Figure 1 is a schematic diagram for explaining the released state, skipped stitch state, and locked state of the slide mechanism, and each a in Figures 9 to 11 is a side view of the operating lever corresponding to each state, and Figures 9 to 11 are side views of the operating lever corresponding to each state. Each b in Figure 11
are side views of the link plate corresponding to each state, and each c of FIGS. 9 to 11 is a side view of the vertical member of the lock plate.

As shown in FIGS. 1 to 11, a sliding type automobile seat S is constructed. As shown in FIG. 4, this sliding type automobile seat S includes a seat cushion 1, a seat back 2, and a It includes a base 3 that rotatably supports the cushion 1 and is slidably installed on the floor 10, and further includes a slide mechanism 4, which will be described later.
, a slide lock mechanism 5, a slide release mechanism (first seat adjustment mechanism) 6, and a rotation mechanism 7.
, a rotation lock mechanism 8 , and a rotation release mechanism (second seat adjustment mechanism) 9 .

As shown in FIGS. 1, 2, and 4, the slide mechanism 4 includes rails 11, 11 as a pair of left and right second members installed on the floor 10 and laid in the longitudinal direction of the automobile, and 11, and a slide stay 14 as a first member that rotatably supports the roller 12 and is fixed to the lower part 3b of the base 3 with bolts 13 or the like. has been done.

The slide stay 14 includes a front slide stay 14a and a rear slide stay 14b that extend within one rail 11.

The slide lock mechanism 5 also has a lock hole 11a formed at the bottom of the rail 11 as an engaging part.
and a claw portion 15a that can fit into this lock hole 11a.
a lock plate 15 provided with a lock plate 15; a guide portion 16 configured by a rear end surface 14c of a front slide stay 14a and a front end surface 14d of a rear slide stay 14b to guide the vertical movement of the vertical member 15A of the lock plate 15; Lock plate 15
a horizontal member 15B connecting the vertical members 15A;
A return spring (locking spring) 18 is inserted between the horizontal member 15B and a locking plate 17b attached to the cylindrical member 17a of the lower base 3b to urge the horizontal member 15B downward; and a guide member 19 for maintaining the posture of the return spring 18.

Further, the slide release mechanism 6 includes seventh and eighth slide release mechanisms.
As shown in the figure, pull up the aforementioned lock plate 15 and remove the claw portion 15 of the lock plate 15.
This is for pulling out a from the lock hole 11a of the rail 11, and the horizontal member 15 of the lock plate 15.
A connecting rod 20 whose lower end 20b is rotatably attached to B, a link plate 21 whose upper bent portion 20a of the connecting rod 20 is loosely fitted into an elongated hole 21a, and a link plate 21 which is attached to its inner end 22a. Interlocking shaft (inner shaft) attached to
22 and an outer end 22b of the interlocking shaft 22.
Plate 23 fixed to and this plate 23
It consists of a slide lever (operation lever for releasing the slide lock) 24 with a handle 24a rotatably attached to the holder via a mounting portion 23a and pivotally supported on a flange 42 of the lower base 3b at a shaft portion 24b. has been done.

Further, the rotation mechanism 7 rotates the seat cushion 1 relative to the floor 10, and the base 3 described above is connected to a lower base 3b that can be moved by the slide mechanism 4, and a lower base 3b that can be moved by the slide mechanism 4. and an upper base 3a having an external lower surface that can come into contact with the external upper surface of the rotating mechanism 7. The rotating surface 25, the cylindrical member 17a attached to the center of the lower base 3b, and the cylindrical member 1
A tip 27 of the external lower surface of the upper base 3a that can suppress movement in the left-right direction by coming into contact with the upper base 3a
It is composed of.

Further, as shown in FIGS. 1 to 3 and 5, the rotation lock mechanism 8 includes a circular lock disk 28 attached to the cylindrical member 17a of the lower base 3b via a locking plate 17b, and A pair of arms 29 that can be engaged with the engagement holes 28a of the arm 29, an arm support shaft 30 to which these arms 29 are attached, and a bracket 31 for rotatably supporting the arm support shaft 30 on the upper base 3a. and a spring (not shown) that supports the arm support shaft 30 so as to rotate in one direction and rotates the arm 29 toward the lock disk 28.

Further, as shown in FIGS. 1 to 3 and 5, the rotation release mechanism 9 is for pulling out the arm 29 from the engagement hole 28a against a spring (not shown). A plate 33 is rotatably attached to the plate 33, an interlocking shaft (outer shaft) 34 as a sheath shaft (second seat adjustment shaft) is attached to the center portion 34a of the plate 33, and this interlocking shaft Plate 3 fixed to outer end 34b of 34
5, a link 36 rotatably connected to this plate 35 via a pin 35a, and a base end 3 of the link 36.
7a, it is rotatably connected to the link 36 via a pin 36a, and its central portion 37b is pivotally supported via a flange (not shown) on the lower base 3b, and a handle 37d is attached to its tip 37c.
The rotary release lever 37 is equipped with a rotary release lever 37.

By the way, the above-mentioned interlocking shafts 22 and 34 are
A flange 39 having a bearing structure with a circlip 38 is provided at the center of the upper base 3a, and a U-shaped flange 39 is provided at the side of the upper base 3a. A bearing plate 40 having a double bearing structure is attached to a seat frame 41.

The flange 39 equipped with this bearing structure is
As shown in FIG. 6 and FIG.
A second vertical wall portion is provided with an inner shaft bearing portion 39a for receiving the inner shaft.

The bearing plate 40 with this double bearing structure is made by bending one flange, as shown in FIGS. 1 and 6b, and its lower end 40a is attached to the seat frame 41 by welding or the like. has been,
A first vertical wall portion 40b connected to this lower end portion 40a
is formed with an outer shaft bearing portion 40c for receiving the interlocking shaft (outer shaft) 34, and a second standing wall portion 40e connected to the standing wall portion 40b via a bent portion (connecting plate) 40d is provided with an interlocking shaft (outer shaft) 34. An inner shaft bearing portion 40f for receiving the inner shaft 22 is attached.

Since the bearing structure of the double shaft for seat adjustment as an embodiment of the present invention is constructed as described above, the slide lock mechanism 5 is normally operated, and the slide mechanism 4 controls the entire sliding seat S for an automobile. In addition to preventing movement in the front-back direction, the rotation release mechanism 9 operates to prevent rotation of the seat cushion 1 and seat back 2 of the automobile seat by the rotation mechanism 7.

In order to move the automobile seat in the front-rear direction, the slide release mechanism 6 is operated to move the slide lever 24 from the locked state R shown in FIGS. 11a to 11c, as shown in FIGS. 9a to 9c. Rotate clockwise to stand up, rotate the link plate 21 counterclockwise from the lock position to the release position L, pull up the connecting rod 20 by the lower end of the elongated hole 21a, and pull the lock plate 15 upward. As a result, the claw portion 15a is pulled out from the lock hole 11a.

As a result, the vehicle seat becomes slidable, and the vehicle seat can be moved in the front-rear direction by manual operation or the like.

Next, when the slide lever 24 is released, the lock plate 15 is urged downward by the return spring 18, and the claw portion 15a at the lower end of the vertical member 15A is
is pressed against the bottom of the rail 11.

At this time, if the claw portion 15a is not aligned with the lock hole 11a, a skipped state W occurs as shown in FIGS. Although the upper end bent portion 20a is located above, the link plate 21 is allowed to return to the lock position, and the slide lever 24 also returns to the lock position R.

When the claw portion 15a is aligned with the lock hole 11a, the vertical member 1
5A is guided by the guide portion 16, and the claw portion 15a is fitted into the lock hole 11a.

As a result, the automobile seat is prohibited from moving in the front-rear direction and enters the slide lock state R.

In addition, in order to rotate the seat cushion 1 and seat back 2 of the automobile seat, as shown in FIG.
As shown in the figure, rotate the handle 37d of the rotary release lever 37 upward, move the link 36 forward, and rotate the interlocking shaft (outer shaft) 34 counterclockwise in the figure to release the arm. 29 upward from the engagement hole 28a of the lock disk 28,
The upper base 3a is made rotatable relative to the lower base 3b.

When the rotation release lever 37 is released near a desired rotation angle, the skipped stitch state W is achieved, and when the rotation release lever 37 is rotated a little further, the rotation lock state R is achieved.

Further, the interlocking shaft 22 and the interlocking shaft 34 can be rotated independently by the flange 39 having a bearing structure and the bearing plate 40 having a double bearing structure.

Note that a string or the like may be used instead of the connecting rod 20.

[Effect of idea]

As described above in detail, according to the dual shaft bearing structure for seat adjustment of the present invention, the first shaft extending inwardly of the seat is connected to the first and second adjustment mechanisms of the seat. In the dual shaft structure, the seat adjustment shaft is provided with a seat adjustment shaft and a second seat adjustment shaft coaxially disposed on the first seat adjustment shaft and formed as a sheath shaft. The above-mentioned first and second
first and second bearings for pivotally supporting the seat adjustment shafts, respectively, first and second support plates supporting the first and second bearings; and a connecting plate that connects each one end of the second support plate to each other, and a mounting plate that connects the other end of one of the first and second support plates to the outer side of the frame of the seat. With a simple structure in which the bearing plate and the bearing plate are integrally bent and formed, a double bearing structure can be constructed with a single component, which is advantageous in terms of mass production and cost.

[Brief explanation of the drawing]

1 to 11 show a bearing structure of a double shaft for seat adjustment as an embodiment of the present invention.
Figure 3 is a front view showing the base broken away, respectively.
4 is a perspective view of the seat slide mechanism showing its overall configuration, FIG. 5 is a perspective view of the main part of the rotation lock mechanism, and FIG. 6a,
b is an enlarged perspective view of the bearing structure, FIG. 7 is a perspective view of the main parts of the slide lock mechanism and slide release mechanism, FIG. 8 is a side view showing the operation of the slide lock mechanism, and FIGS. The figures are schematic diagrams for explaining the released state, skipped stitch state, and locked state of the slide mechanism, and each of a in Figs. 9 to 11 is a side view of the operating lever corresponding to each state, and Each b in the figure is a side view of the link plate corresponding to each state, each c in FIGS. 9 to 11 is a side view of the vertical member of the lock plate, and FIG. FIG. 3 is a front view of main parts showing the bearing structure of the heavy shaft. 1...Seat cushion, 2...Seat back, 3...Base, 3a...Upper base, 3b...Lower base, 4...Slide mechanism, 5...Slide lock mechanism, 6...Slide release mechanism (first seat adjustment mechanism), 7... rotation mechanism, 8... rotation lock mechanism, 9... rotation release mechanism (second seat adjustment mechanism), 10... floor, 11... second
rail as a member, 11a... lock hole as an engaging part, 12... roller, 13... bolt,
14...Slide stay as a first member, 1
4a...Front slide stay, 14b...Rear slide stay, 14c...Rear end surface, 14d...Front end surface, 15...Lock plate, 15a...Claw portion, 15A...Vertical member, 15B...Horizontal member ,
16... Guide portion, 17a... Cylindrical member, 17b...
... Locking plate, 18 ... Return spring as a locking spring, 19 ... Guide member, 20 ... Connection rod as a connection member, 20a ... Upper end bent portion, 20b ...
...lower end, 21...link plate, 21a...
Elongated hole, 22... Interlocking shaft (inner shaft) as a first seat adjustment shaft, 22a... Inner end,
22b...Outside end, 23...Plate, 23a
...Mounting portion, 24...Slide lever as an operation lever for unlocking, 24a...Handle, 24
b...Shaft part, 25...Rotating surface, 27...Tip part,
28...Lock disk, 28a...Engagement hole, 2
9...Arm, 30...Arm support shaft, 31...
Bracket, 32... pin, 33... plate,
34... Interlocking shaft (outer shaft) as second seat adjustment shaft, 35... Plate, 35a
...Pin, 36...Link, 36a...Pin, 3
7...Rotary release lever, 37a... Base end part,
37b...center part, 37c...tip part, 37d...
...Handle, 38...Circlip, 39...Flange with bearing structure, 39a, 39b...Vertical wall portion, 40...Bearing plate with double bearing structure,
40a...lower end portion, 40b...first vertical wall portion (first support plate), 40c...bearing portion for outer shaft as second bearing portion, 40d...bent portion (connection plate), 4
0e...Second standing wall part (second support plate), 40f
...Inner shaft bearing section as the first bearing section, 41...
...Seat frame, 42...Flange, S...Sliding seat for automobiles.

Claims (1)

[Scope of utility model registration request] a first seat adjustment shaft extending inwardly of the seat to be coupled to the first and second adjustment mechanisms of the seat; and a second seat adjustment shaft formed as a sheath shaft, for pivotally supporting the first and second seat adjustment shafts on the outer side of the frame of the seat, respectively. first and second bearings are provided, first and second support plates supporting the first and second bearings, and one end of each of the first and second support plates are provided. A connecting plate that connects to each other and a mounting plate that connects the other end of one of the first and second support plates to the outer side of the frame of the seat are bent and formed integrally as a bearing plate. A double shaft bearing structure for seat adjustment.