JP3640774B2 - Seat back trim cover suspension structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seat back trim cover suspension structure in which a seat back trim cover is partially suspended and locked on the back of the seat back.
[0002]
[Prior art]
For example, in a seat back of a vehicle seat such as a passenger car, a seat pad as an elastic body is usually disposed at a predetermined position around the seat back frame to form a seat back body having a corresponding shape. Then, by covering the seat back body with a trim cover made of a skin or the like, a seat back that can elastically support the upper body of the seated person from behind is formed.
[0003]
As such a seat back trim cover, for example, a generally bag-like configuration having an opening at one end such as a lower end is generally known, and insertion of the seat back main body from the opening, that is, from above the seat back main body. With this covering, the seat back body can be covered with the trim cover.
[0004]
By the way, in a seat back of a seat mounted as a front seat of a passenger car, a leg space (also referred to as a knee space) for a rear seat seater is provided between the rear portion of the seat and the front portion of the rear row seat. Since it is necessary to ensure sufficient, the structure which made thin the back part of a seat back, ie, the part of the back of the back, to the front is common. In such a configuration, the upper back portion of the seat back is thicker in the rear than the other portion, that is, the leg space portion, so that the trim cover is likely to bend in the leg space portion, resulting in a decrease in appearance quality. There is a fear.
[0005]
Therefore, a configuration that partially secures the back of the trim cover while being suspended in the seat back body to secure leg space and prevent bending of the trim cover, etc. It is disclosed in the gazette. According to such a configuration, since the back of the trim cover is appropriately stretched in the leg space portion, the leg space of the rear row seat occupant can be easily secured, and the trim cover is bent in the leg space portion. Can be prevented.
[0006]
[Problems to be solved by the invention]
In the known configuration disclosed in Japanese Utility Model Publication No. 07-012000, the retainer fixed to the inner surface of the trim cover is connected and locked to the trim wire of the seat back frame by a hog ring or the like. The corresponding part can be suspended.
[0007]
However, since the trim cover has a substantially bag shape, the hog ring stopping operation inside the trim cover forces the operator to grope. Therefore, in this known configuration, workability is unavoidable.
[0008]
In addition, since the hog ring stopping operation under such a groping largely depends on the operator's work intuition, differences in workability and work reliability are likely to occur depending on the skill level of the operator.
[0009]
In addition, the hogging stop operation requires dedicated equipment for hogging, for example, a dedicated tool such as a hogglinger or a device for supplying compressed air, etc., thus avoiding an increase in capital investment and complicated work. I can't.
[0010]
By the way, what is called an adhesive-molded sheet | seat which adhere | attached the seat back main body and the trim cover between the seating surfaces is known as one structure of a seat back. In this type of adhesive molded sheet, hoisting and locking at the seating surface side are not required, so that hoggling is omitted in this portion. However, in the known configuration, hoggling is used for hanging on the back of the back, so that it is not easy to make the hog ring less in the seat back.
[0011]
SUMMARY OF THE INVENTION An object of the present invention is to provide a seat back trim cover suspension structure that eliminates the groping work inside the trim cover and enables hog ring-less in the seat back.
[0012]
[Means for Solving the Problems]
To achieve this object, according to the present invention, there is provided a locking plate having a peripheral wall erected in the front direction of the seat back main body at least at the upper and lower ends and provided with a slit with a wall extending in the left-right direction. At least the opening of the walled slit is aligned and exposed between the left and right sides of the seat back frame at the hanging position on the back of the back body so as to be exposed.
[0013]
Then, it can be inserted into the slit with a wall under forced and elastic contraction due to external pressure and cannot be detached from the end of at least one of the upper and lower peripheral walls of the walled slit by shape restoration after the insertion. A hook plate integrally having a hook piece to be joined is fixed to the inner surface of the back of the trim cover at a position alignable with the walled slit and serves as a guide for inserting the hook plate into the walled slit. The step of the height with which the hook piece can be engaged is provided between the upper end and the lower end of the opening of the walled slit.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0015]
As shown in FIGS. 1 and 2, in the seat back trim cover suspension structure 10 according to the present invention, the locking plates 14 provided with slits , for example , slits 12 with walls , are provided on the left and right sides of the seat back frame 16. The trim cover 22 is disposed on the seat back main body 18 by erection and fixing between them, and a hook plate 20 that can be inserted and locked into the slit with the wall of the locking plate covers the peripheral surface of the seat back main body. It is fixed to the inner surface of the back of the back.
[0016]
As can be seen from FIG. 2, the seat back main body 18 is formed by disposing a seat pad 24 as an elastic body at a predetermined position around the seat back frame 16 assembled in a substantially rectangular shape. As shown in FIG. 3, the seat back main body 18 is covered with a substantially bag-shaped trim cover 22 having one end (lower end) opened, and for example, a seat back 28 of a seat 26 to be mounted as a front seat of a passenger car. Is formed.
[0017]
By the way, the seat back 28 has a form in which the back surface, that is, the back of the back is partially thinned forward. This front thin portion of the seat back 28, that is, the range a shown in FIG. 3, is a leg for the rear seat seater between the rear portion of the seat 26 and the front portion of the rear seat (not shown). This is to secure a space (also referred to as a knee space). The back of the trim cover 22 faces the seat back body 18 at the boundary between the thick part (range b) and the range a at the rear of the upper part. It is partially suspended.
[0018]
In the present invention, the corresponding portion on the back of the trim cover 22 can be suspended from the seat back body by the hook plate 20 being locked to the locking plate 14 provided in the seat back body 18. .
[0019]
As can be seen from FIG. 4 in addition to FIG. 1, the hook plate 20 has a hook piece 20a that can be forcibly and elastically shrunk under the action of external pressure at one end (tip). The hook plate is molded from a synthetic resin material into a J shape, and the hook plate is attached to the inner surface of the back of the trim cover by sewing the rear end of the trim cover at the corresponding position on the inner surface of the trim cover 22, that is, the trim cover hanging position. It is fixed to.
[0020]
The wall-attached slit 12 is provided in the locking plate 14 with a slit width that can ensure the insertion and engagement of the hook piece 20a of the hook plate from the opening. The slit 12 with the wall is formed as a form having a seating surface of the seat back 28, that is, a peripheral wall 12a-U, 12a-L erected in the front direction of the seat back main body 18 (left side in the figure). Has been.
[0021]
Here, in the embodiment of the present invention, the locking plate 14 has a recess 30 that is substantially trapezoidal in longitudinal section and extends in the left-right direction, on the back side surface of the seat back body 18, that is, the right side in the figure. On the bottom surface 30a of the recess, a wall-attached slit 12 is provided continuously to one of the side surfaces located above and below the bottom surface, for example, the upper side surface. In this embodiment, the upper side surface of the recess 30 is erected in the front direction of the seat back body 18 as the peripheral wall above the walled slit 12, that is, the upper wall 12a-U, and is bent from the bottom surface 30a. As a piece, the lower peripheral edge of the walled slit, that is, the lower wall 12a-L is formed.
[0022]
In such a configuration, a step L1 corresponding to the depth of the recess 30 is formed between the upper end 12b-U and the lower end 12b-L of the opening of the walled slit 12. The step L1 is set in advance as a height at which the hook piece 20a of the hook plate can be engaged, whereby the step functions as a guide when the hook plate 20 is inserted into the opening of the walled slit 12. It is possible.
[0023]
As shown in FIG. 1, the locking plate 14 is arranged with the slit 12 with the wall substantially aligned at the boundary line 32 between the range a and the range b in the seat back body 18, that is, at the position where the trim cover 22 is suspended. For example, the seat back main body 18 is disposed in a state in which the lower side of the slit with the wall is exposed in the back direction.
[0024]
Here, the normal outer width T1 of the hook piece 20a of the hook plate is formed wider than the slit width T2 of the walled slit 12. The hook piece 20a is formed so that the outer width T1 is narrower than the slit width T2 by the action of external pressure, for example, the elastic contraction width resulting from insertion into the walled slit 12. .
[0025]
In the trim cover suspension structure 10 having this configuration, as shown in FIG. 4, an operator first picks the hook plate 20 from the outside of the back of the substantially bag-shaped trim cover 22 and stands in a substantially horizontal state. The hook plate 20a is pressed against the locking plate 14 with the hook piece 20a at the top. At this time, as shown in FIGS. 1 and 4, in the present invention, the step L1 that can be engaged with the hook piece 20a is provided between the upper end 12b-U and the lower end 12b-L of the opening of the walled slit 12. Therefore, if the hook plate 20 is moved up and down so that the hook piece is engaged with the upper end of the opening, and thus the upper wall 12a-U of the walled slit, the position of the walled slit can be easily found. Can do.
[0026]
Then, when the hook plate 20 is pushed in with the compression of the seat pad 24 at the contact position with the upper wall 12a-U of the walled slit 12, the hook piece 20a of the hook plate enters along the upper wall, It is inserted into the walled slit 12 under the elastic reduced width. Thereafter, if the hook piece 20a passes through the walled slit 12 and the pressing force (external force) in the width reducing direction is released from the hook piece, the elasticity of the hook piece as shown in FIGS. When the hook piece is engaged with either the upper wall 12a-U or the lower wall 12a-L (the upper wall in the figure) of the upper wall 12a-U or the lower wall 12a-L due to the shape restoration, the hook plate 20 becomes the locking plate 14. Since it is locked so as not to fall off, the corresponding portion of the trim cover 22 is suspended and held on the back of the seat back body 18.
[0027]
When the hook plate 20 is inserted into the wall-mounted slit 12, the seat pad 24 is pressed, so the trim cover 22 can be shaped like a seat pad by releasing the press caused by the hook plate being pushed. Pulled with the hook plate under restoration, the hook piece 20a of the hook plate automatically and firmly engages with the upper wall 12a-U and lower wall 12a-L ends of the walled slit. Is done.
[0028]
As described above, in the seat back trim cover suspension structure 10 of the present invention, the hook plate 20 is moved from the outside of the back of the substantially bag-shaped trim cover 22 to the slit 12 (slit) with the wall of the locking plate. Since it is sufficient to insert and lock into the trim cover, no groping work is required in the trim cover when the trim cover is suspended.
[0029]
That is, the trim cover 22 can be easily and reliably suspended regardless of the skill level of the operator, so that the workability and reliability of the trim cover are improved.
[0030]
Since the trim cover 22 can be suspended by pushing the hook plate 20 from the outside of the back of the trim cover, the suspension process itself is extremely simple and easy. Therefore, mass production of the seat back 28 with the trim cover 22 suspended is sufficiently possible.
[0031]
Furthermore, the locking plate 14 provided with the walled slits 12 is constructed and fixed between the left and right sides of the seat back frame 16, and the hook plate 20 only needs to be fixed to the corresponding inner surface of the trim cover 22. The trim cover suspension structure 10 that enables mass production of the back 28 can be easily secured without complicating the configuration.
[0032]
In the embodiment of the present invention, the configuration in which the hook piece 20a of the hook plate is engaged with the upper wall 12a-U of the walled slit is illustrated, but the present invention is not limited to this. Needless to say, if the hook piece is provided below the hook plate, the hook piece is engaged with the lower wall 12a-L of the walled slit.
[0033]
By the way, in the seat back of a vehicle seat, the front surface thereof, that is, the central portion (bent portion) of the seating surface and the side portion (gap portion) thereof can be divided by suspension using a suspension wire or the like. In many cases, the hanging wire or the like is usually locked to the embedded wire or the like in the seat back body by hog ring. However, the locking operation by the hog ring is not preferable because it requires a dedicated tool, a dedicated facility, and the like.
[0034]
Therefore, a so-called adhesive molded sheet is known in which the seat back body is covered with a substantially bag-shaped trim cover with bonding on the seating surface side. In such an adhesive-molded sheet, it is not necessary to hang the trim cover on the seating surface side of the seat back, so that it is possible to eliminate hoggling on the seating surface side. Then, by using the trim cover suspending structure 10 of the present invention for the adhesive molded sheet, it becomes possible to make the hog ring less on the back of the seat back in addition to the seating surface side.
[0035]
That is, if the present invention is configured in the adhesive molded sheet, the seat back 28 can be easily made hog-ring-free. Therefore, it is possible to assemble the seat back 28 without providing dedicated tools, equipment, etc. for hoggling, so the workability and reliability of the seat back assembly are improved and mass production of seat backs is improved. The production efficiency at the time of conversion is surely improved.
[0036]
Here, in the embodiment of the present invention, the wall-attached slit 12 is continuously provided on the side surface above the bottom surface with the bottom surface 30a of the concave portion having a substantially inverted trapezoidal longitudinal section. Since it is sufficient that a step is formed between the upper end 12b-U and the lower end 12b-L, conversely, a slit with a wall may be provided on the bottom surface of the recess so as to be continuous with the side surface below the bottom surface.
[0037]
In this case, the lower side surface of the recess 30 is erected in the front direction of the seat back body 18 as the lower wall 12a-L of the walled slit 12, and is attached to the wall as a bent piece from the bottom surface 30a. The upper wall 12a-U of the slit is erected. In this configuration, the entirety of the recess 30 is provided exposed on the back of the seat back body 18.
[0038]
However, in the configuration in which the bottom surface 30a of the concave portion is connected to the side surface below the bottom surface to provide the walled slit 12, the upper end 12b-U and the lower end 12b-L of the concave portion 30 and the opening of the walled slit formed thereby. In order to ensure the insertion of the hook plate 20 using the step between the two, it is necessary to provide the entire recess exposed on the back of the seat back body 18, so that the slit with the wall is within the range a of the seat back 28. There is a risk of shifting downward from the boundary line 32 between the range b.
[0039]
On the other hand, if the bottom slit 30a of the recess is continuous with the side surface above the bottom face and the slit 12 with the wall is provided, the slit with the wall is always located at the upper end portion of the bottom face, Without shifting the walled slit from the boundary line 32 to the range b, the recess 30 and the hook plate 20 using the step between the upper end 12b-U and the lower end 12b-L of the opening of the walled slit formed thereby Since the insertion can be ensured, not only the workability is further improved, but also more effective suspension can be easily obtained from the viewpoint of the improvement of the external shape.
[0040]
Further, in the embodiment of the present invention, a concave portion having a substantially inverted trapezoidal cross section having a bottom surface 30a is provided in the locking plate 14 as the concave portion 30, but the upper end 12b-U of the opening of the walled slit 12; Since it is sufficient if the step L1 can be formed between the lower ends 12b-L, the present invention is not limited to this. For example, a recess having a substantially inverted triangular shape having no bottom surface as shown in FIG. It is good also as a structure which forms in a plate and provides a slit with a wall in the vertex part between this upper and lower side surface.
[0041]
In FIG. 5, the upper side surface of the concave portion having a substantially inverted triangular shape in vertical section can function as the upper wall 12a-U of the walled slit 12, and the bent side of the lower side surface has a lower part of the walled slit. Walls 12a-L are formed.
[0042]
Further, since it is sufficient to form a step L1 between the upper end 12b-U and the lower end 12b-L of the opening of the walled slit 12, the present invention is not limited to the formation of the recess 30. For example, as shown in FIG. The upper plate 14a and the lower plate 14b are formed in advance at corresponding height difference positions, and the upper and lower ends of the opening are positioned on the upper and lower pieces. A step may be provided between them.
[0043]
However, if the recess 30 is provided in the locking plate 14 and a slit with a wall is formed as a form continuous with the recess, the position of the slit with the wall can be clarified by this recess, and the outer side of the back of the trim cover 22 The hook plate 20 can be inserted more easily. Since the recess 30 is formed to reinforce the locking plate 14 at the same time, it is possible to prevent deformation of the locking plate without complicating the configuration.
[0044]
In the embodiment of the present invention, the hook plate 20 is embodied as a substantially J shape on the side surface. However, the hook plate 20 can be elastically reduced in width under the action of external pressure, and has a wall by a shape restoration. Since the hook piece 20a having a shape that can be engaged with the ends of the upper wall 12a-U and the lower wall 12a-L of the slit need only be integrally formed at one end (tip), the side face is not limited to the substantially J shape. Alternatively, the hook plate may be formed in a substantially ↓ shape on the side surface or a substantially bowl shape on the side surface.
[0045]
However, if the hook plate 20 has a substantially J-shaped side surface, the outer width of the hook piece 20a, and thus the overall appearance thickness of the hook plate, can be suppressed, so that the size of the hook plate can be increased and the slit width of the walled slit 12 can be reduced. Expansion can be prevented. Therefore, improvement in the appearance quality of the seat back 28 after the trim cover 22 is suspended can be easily secured from this point.
[0046]
In addition, in the trim cover suspension structure of the seat back of the present invention, the seat back of the seat that is mounted as the front seat of the passenger car is illustrated, but if the seat back requires the suspension of the back of the trim cover, For example, the present invention may be applied to seats for other automobiles such as buses, seats for trains, airplanes, ships, etc., or seats for movie theaters, theaters, and the like.
[0047]
The above-described embodiments of the present invention are for explaining the present invention, and are not intended to limit the present invention. All modifications, alterations, etc. within the technical scope of the present invention are included in the present invention. It goes without saying that it is included in.
[0048]
【The invention's effect】
As described above, according to the trim cover hanging structure of the seat back according to the present invention, the hook plate is attached to the slit of the locking plate , specifically from the outside of the back side of the substantially bag-like trim cover. Since it is sufficient to insert and lock into the slit , no groping work is required in the trim cover when the trim cover is suspended.
[0049]
Therefore, the trim cover can be easily and reliably suspended regardless of the skill level of the operator, and the workability and reliability of the trim cover are improved. It becomes extremely simple and easy, and the mass production of the seat back with the trim cover suspended is sufficiently possible.
[0050]
Then, the latch plate with the walled slits is installed and fixed between the left and right sides of the seat back frame, and it is only necessary to fix the hook plate to the corresponding inner surface of the trim cover. The possible trim cover suspension structure can be easily secured without complicating the structure.
[0051]
Further, if the present invention is configured in a so-called adhesive molded sheet in which the seat back body is covered with a substantially bag-shaped trim cover with bonding on the seating surface side, the back of the seat back added to the seating surface side is provided. As a result, it is possible to eliminate hogging, so that the workability and the certainty of the seat back are improved, and the production efficiency in the mass production of the seat back is surely improved.
[0052]
Then, substantially inverted trapezoidal recess having a bottom surface, or a substantially inverted triangular recess of the recessed in the pushing direction in front of the hook plate below the slit, by providing the locking plate as recess, walled slit (slit) Not only can the position be clarified, but the locking plate is reinforced by the recess, so that deformation of the locking plate can be prevented without complicating the configuration.
[0053]
Furthermore, if the lower end of the opening of the walled slit is positioned on the front side of the seat back body from the upper end to form an opening step, the hook plate can be inserted smoothly and easily using the stepped opening of the walled slit. Therefore, not only the workability is further improved, but also more effective suspension can be easily obtained from the viewpoint of improving the external shape.
[0054]
Also, if the hook plate has a substantially J-shaped side surface, the outer width of the hook piece, and hence the overall appearance thickness of the hook plate, can be suppressed, so the hook plate can be enlarged and the slit width of the walled slit can be increased. Can be prevented. Therefore, the improvement in the appearance quality of the seat back after the trim cover is suspended can be easily secured from this point.
[Brief description of the drawings]
FIG. 1 is a schematic vertical sectional view of a seat cover trim cover hanging structure according to the present invention.
FIG. 2 is a schematic perspective view of the seat back body as seen from the rear (back side).
FIG. 3 is a schematic perspective view of the seat as seen from the back (back side).
FIG. 4 is a schematic exploded sectional view of a partially broken structure of a seat back trim cover suspension.
5 is a schematic longitudinal sectional view similar to FIG. 1 of a seatback trim cover suspension structure showing a modification. FIG.
FIG. 6 is a schematic longitudinal sectional view similar to FIG. 1 of a trim cover hanging structure for a seat back, showing another modification.
[Explanation of symbols]
10 Seat back trim cover suspension structure
12 Wall slit
12a-U, 12a-L Upper wall, lower wall of the periphery of the slit with wall
12b-U, 12b-L Upper and lower ends of wall slit
14 Locking plate
16 Seat back frame
18 Seat back body
20 Hook plate
20a hook piece
22 Trim cover
28 Seat back
30 recess
30a Bottom of recess
32 Boundary line (hanging position)

Claims (8)

Cover the peripheral surface of the seat back body, which has a seat pad around the seat back frame, with a substantially bag-shaped trim cover, and hang the specified part on the back of the back part of the seat back body to lock it. Seat back
A locking plate provided with a wall-attached slit extending in the left-right direction, having at least up and down peripheral walls erected in the front direction of the seat back body, is at least a wall at a hanging position on the back of the seat back body. The slit opening is aligned and exposed between the left and right sides of the seat back frame.
Can be inserted into the walled slit from the opening under forced and elastic contraction due to external pressure, and can be engaged with the end of at least one of the upper and lower peripheral walls of the walled slit by restoring the shape after the insertion. The hook plate integrally having the hook piece to be fixed to the inner surface of the back of the trim cover at a position alignable with the walled slit,
A step of the height at which the hook piece can be engaged, which serves as a guide when the hook plate is inserted into the slit with the wall, is provided between the upper end and the lower end of the opening of the wall slit. Trim cover suspension structure for seat back. Cover the peripheral surface of the seat back body with seat pads around the seat back frame with a substantially bag-shaped trim cover that is provided with adhesion on the side of the seating surface. It is a seat back formed as an adhesive molded sheet that is partially suspended and locked to the seat back body,
A locking plate provided with a wall-attached slit extending in the left-right direction, having at least up and down peripheral walls erected in the front direction of the seat back body, is at least a wall at a hanging position on the back of the seat back body. The slit opening is aligned and exposed between the left and right sides of the seat back frame.
Can be inserted into the walled slit from the opening under forced and elastic contraction due to external pressure, and can be engaged with the end of at least one of the upper and lower peripheral walls of the walled slit by restoring the shape after the insertion. The hook plate integrally having the hook piece to be fixed to the inner surface of the back of the trim cover at a position alignable with the walled slit,
A step of the height at which the hook piece can be engaged, which serves as a guide when the hook plate is inserted into the slit with the wall, is provided between the upper end and the lower end of the opening of the wall slit. Trim cover suspension structure for seat back.   The locking plate is formed with a recessed portion extending in the left-right direction having a substantially inverted trapezoidal longitudinal section on the surface of the back side of the seat back body, and a slit with a wall is formed on the bottom surface of the recessed portion above and below the bottom surface. The seat cover trim cover suspension structure according to claim 1 or 2, wherein a step is formed between an upper end and a lower end of the opening of the walled slit by being continuously provided on any of the side surfaces.   The locking plate is formed with a concave portion extending in the left-right direction having a substantially inverted triangular longitudinal section on the surface of the back side of the seat back body, and a slit with a wall is formed at any one of the top and bottom at the apex portion of the concave portion. The seat back trim cover suspension structure according to claim 1 or 2, wherein a step is formed between the upper end and the lower end of the opening of the walled slit by being continuously provided on the side surface.   The lower part of the slit with the wall is aligned and exposed to the hanging position of the back of the seat back body, and the locking plate is disposed on the seat back body, and the lower end of the opening of the wall slit is from the upper end of the seat back body. The seat cover trim cover suspension structure according to any one of claims 1 to 4, wherein the structure is located on the front side of the seat back.   The seat back according to any one of claims 1 to 5, wherein the hook plate is formed from a synthetic resin material in a substantially J-shaped side surface having a hook piece elastically deformable in the width-reducing direction under the action of external pressure at one end. Trim cover hanging structure. Cover the peripheral surface of the seat back body, which has a seat pad around the seat back frame, with a substantially bag-shaped trim cover, and hang the specified part on the back of the back part of the seat back body to lock it. In the seat back
A hook plate integrally having a hook piece is fixed to the inner surface of the back side of the trim cover, and the hook piece of the hook plate can be inserted into and engaged with a locking plate fixed to the seat back frame. Slits are provided,
A seat back trim cover suspension structure characterized in that a hook piece of the hook plate is pushed into the slit against the elastic force of the seat pad to engage the both. 8. The seat cover trim cover suspension structure according to claim 7, wherein a lower portion of a slit provided in the locking plate is recessed forward in the pushing direction of the hook plate.

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