JP5835063B2 - Manufacturing method for vehicle seat - Google Patents

Description

The present invention relates to a method for manufacturing a vehicle seat. Specifically, the present invention relates to a method for manufacturing a vehicle seat in which an attachment member and a shield are assembled to a seat frame.

  Conventionally, in a vehicle seat, an attachment member is assembled to a side frame of a seat back, and a shield is assembled from the outside so as to cover the assembly portion (Patent Document 1).

Japanese Utility Model Publication No. 5-23945

  In the above prior art, the accessory member is caulked and fixed to the hole provided in the side frame, and in order to assemble the shield to such a side frame, a hole for further assembly is separately provided. It must be set, leading to an increase in man-hours. The present invention has been created as a solution to the above problem, and the problem to be solved by the present invention is to rationalize the assembly structure of the shield to the seat frame.

In order to solve the above-mentioned problems, the vehicle seat manufacturing method of the present invention takes the following means.
1st invention is the manufacturing method of the vehicle seat by which each internal and external attachment member and shield are assembled | attached to a seat frame. Each accessory members as mutually common positioning hole positioning hole formed through transmural the seat frame, in a state where the positioning holes formed through each are aligned on a common positioning hole of the seat frame The inner part and the outer part are integrally joined to each other by welding. Shield is mounted as an attachment hole all the Positioning holes are formed through the seat frame and the respective armatures.

According to the first invention, the Positioning hole formed through to the seat frame and each accessory member by use as a mounting hole of the shield, the assembly structure to the seat frame of the shield to streamline it can. Specifically, the attachment hole for attaching the shield is formed by a thick positioning hole formed through the seat frame and each accessory member so that the shield has a high structural strength with respect to the seat frame. A stable attachment state can be obtained.

The second invention is the first invention described above, a more outer circumference each Positioning holes are formed in two positions which penetrate respectively to the seat frame and the respective armatures, the shape of the shield each positioning holes formed at a position located on the side is, those which are employed as mounting holes.

According to the second aspect of the invention, by adopting the hole Install the Positioning hole located more outer peripheral side with respect to the shape of the shield, tends to view the insertion work of the mounting hole from the outside, the shield Assembly workability can be improved.

1 is a perspective view illustrating a configuration of a vehicle seat according to a first embodiment. It is a disassembled perspective view of the frame structure of a seat back. It is the perspective view which expanded and represented the III section of FIG. It is the side view which looked at the side frame inside a vehicle from the seat inner side. It is the VV sectional view taken on the line of FIG.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing.

  First, the configuration of the vehicle seat 1 according to the first embodiment will be described with reference to FIGS. As shown in FIG. 1, the vehicle seat 1 of the present embodiment is divided 6: 4 in the width direction among seat seats for three seats arranged in the rear row of a so-called station wagon type vehicle. It is configured as a seat for a narrow side (four sides). The vehicle seat 1 includes a seat back 2 that serves as a backrest, a seat cushion 3 that serves as a seating portion, and a headrest 4 that serves as a headrest portion. The seat back 2 and the seat cushion 3 are individually connected and supported on the floor F. The headrest 4 is attached to and supported by the upper part of the seat back 2.

  In detail, as shown in FIG. 2, the seat back 2 described above is fixed on the floor F with the lower ends of the left and right sides of the back frame 10 assembled in an inverted U-shape forming the skeleton. Each base plate 20 is connected via a disc-shaped reclining device 30 that functions as a rotation shaft device capable of stopping rotation. As a result, the seat back 2 is connected to the floor F in a state where the backrest angle can be adjusted with respect to the floor F via the reclining devices 30. Each of the reclining devices 30 described above is normally held in a locked state in which the backrest angle of the seat back 2 is fixed, and a seated person is provided on the side of the seat cushion 3 on the vehicle outer side (right side in the drawing). When the release lever 41A is pulled up, the locked state is released and the backrest angle of the seat back 2 can be changed.

  Specifically, each reclining device 30 is operated to release the locked state by operating the shafts 31 of the operation shafts 31 inserted through the center of the reclining device 30 by operating the release lever 41A. It is like that. Here, the arm member 32A is integrally coupled to the operation shaft 31 of the reclining device 30 disposed on the vehicle outer side (the right side in the figure), and the release lever 41A disposed on the same side is pulled up. As a result, the arm member 32A is pushed and the operation shaft 31 on the same side is integrally rotated with the arm member 32A so that the locked state of the reclining device 30 is released.

  In addition, an arm member 32B is integrally coupled to the operation shaft 31 of the reclining device 30 disposed on the vehicle inner side (the left side in the figure) (see FIG. 3). The arm member 32B is connected to the above-described arm member 32A on the vehicle outer side through the transmission cable 33 so that power can be transmitted. As a result, when the release lever 41A described above is operated and the arm member 32A on the vehicle outer side is pushed around, the arm member 32B on the vehicle inner side is also rotated together via the transmission cable 33, so that the operation on the vehicle inner side is performed. The shaft 31 is operated to rotate, and the locked state of the reclining device 30 on the same side is also released together. Since the basic structure of each reclining device 30 is the same as that disclosed in a document such as Japanese Patent Application Laid-Open No. 2011-116303, description of the specific configuration is omitted.

  Here, the configuration of the transmission cable 33 will be described in detail. The transmission cable 33 has a double cable structure in which a linear inner cable is inserted into a tubular outer cable. As shown in FIG. 2, the end portion of the outer cable is hooked to the first cable hooking plate 20A coupled to the base plate 20 on the outer side of the transmission cable 33 on the side of the one end 33A located on the outer side of the vehicle. Thus, the end portion of the inner cable is hooked and fixed to the arm member 32A. As shown in FIG. 3, the transmission cable 33 has a second cable hook plate in which the end portion of the outer cable is coupled to the side frame 11 on the vehicle inner side at the other end 33 </ b> B routed to the vehicle inner side. 11D is hooked and fixed, and the end portion of the inner cable is hooked and fixed to an arm member 32B integrally connected to the operation shaft 31 of the reclining device 30 inside the vehicle.

  As shown in FIGS. 2 to 3, as a result of the hooking, as shown in FIGS. 2 to 3, the end portion of the inner cable is connected to the end of the outer cable by the movement of the arm member 32 </ b> A on the outer side of the vehicle. The operation movement amount is transmitted to the other end 33B side shown in FIG. 3, and the inner cable pulls the arm member 32B connected to the operation shaft 31 on the other end 33B side. By operating it, the locked state of the reclining device 30 on the same side is also released.

  Thus, the locked state of the reclining device 30 inside the vehicle is configured to be released by receiving the operation force of the release lever 41A via the transmission cable 33, not the connecting rod, Compared to the configuration in which the operating shafts 31 of the reclining device 30 are connected to each other by a connecting rod and the power is transmitted, there are the following merits.

  That is, with reference to FIG. 2, when considering a configuration in which the operation shafts 31 of the reclining devices 30 on both sides are connected by connecting rods, for example, a frontal collision of the vehicle occurs and the vehicle interior of the seat back 2 When a heavy object such as a wine case collides with the side portion (side frame 11) from behind, the side frame 11 and the side frame 11 on the same side are connected via the reclining device 30 (locked state) on the same side (inside the vehicle). The integrated base plate 20 receives a compressive force in a strong bending direction and is deformed so as to be crushed in a manner of buckling to the front lower side. Due to this deformation, the reclining device 30 in a locked state integrated with the base plate 20 is rotated forward by the deformation of the base plate 20 and is held by the operation shaft 31 of the reclining device 30 outside the vehicle. Rotate forward with respect to the connecting rod.

  This forward rotational movement with respect to the connecting rod is a rotational direction in which the locked state of the reclining device 30 inside the vehicle is released, and the locked state of the reclining device 30 on the same side (inside the vehicle) is released. There is a risk that. However, in the configuration of the present embodiment, the transmission of the operation force from the release lever 41A to the operation shaft 31 of each reclining device 30 is performed via the arm members 32A and 32B and the transmission cable 33. The release operation associated with the occurrence of unexpected power transmission as described above is prevented from occurring.

  Here, a spiral spring 15 that applies a biasing force in a direction to always rotate the seat back 2 between the side of the back frame 10 on the vehicle inner side (left side in the drawing) and the base plate 20 described above. Is hung. By the biasing force of the spiral spring 15, the seat back 2 is lifted up to the position where the seat back 2 hits the back of the seat occupant by following the movement of the back of the seat occupant. The backrest angle is adjusted back and forth in the form.

  Further, a cylindrical damper 16 is provided on a side of the back frame 10 on the vehicle outer side (the right side in the drawing) on the inner surface. The damper 16 suppresses the falling speed so that when the seat back 2 is tilted forward in a state where no person is sitting on the vehicle seat 1, the movement of the seatback 2 is not excessively pushed. It is supposed to function. In addition, about the specific structure of the damper 16 which suppresses the falling speed of this seat back 2, since it is the same structure as what was disclosed by literature, such as Unexamined-Japanese-Patent No. 2007-191120, description is abbreviate | omitted. I will do it.

  The connecting structure between the side portion of the seat back 2 on the vehicle outer side (right side in the drawing) and the base plate 20 is formed of a resin outer inner shield 40B and an outer outer portion that are fitted into these connecting portions from the inner side and the outer side, respectively. Each of the shields 40A is covered so as not to be visible from the outside. Also, the connecting structure between the side of the seat back 2 on the vehicle inner side (the left side in the figure) and the base plate 20 is also made of a resin inner inner shield 40C and an outer outer side that are fitted into these connecting portions from the inner and outer sides. Each of the shields 40D is covered so as not to be visible from the outside.

  Specifically, the outer inner shield 40B is attached to the side frame 11 on the vehicle outer side (the left side in the drawing) of the back frame 10 by one clip 41B. Specifically, the outer inner shield 40B is configured such that the concave hooking portion 42B formed at the lower end portion thereof is hooked from the lower side to the protruding portion 11C formed by protruding the lower end portion of the side frame 11 downward. Then, by aligning the hole 40Ba formed in the upper end portion of the outer inner shield 40B with the through hole H1 formed so as to penetrate the side frame 11, the clip 41B is inserted into these communicating hole portions, whereby the side frame 11 It is in the state where it was fixed to and attached. The outer inner shield 40B covers the entire cylindrical damper 16 provided on the inner side of the side frame 11 outside the vehicle of the seat back 2, and is connected via the disc-shaped reclining device 30. The connecting portion between the base plate 20 outside the vehicle and the side frame 11 of the seat back 2 is formed in a cylindrical container shape that can cover the lower front side.

  The outer outer shield 40A is fastened and attached to the base plate 20 outside the vehicle by two bolts 40Aa. The outer outer shield 40A is a cylindrical container type that can cover the connecting portion between the base plate 20 outside the vehicle and the side frame 11 of the seat back 2 connected via the disc-shaped reclining device 30 from the upper front side. It is formed into a shape.

  The inner inner shield 40C is attached to the side frame 11 on the vehicle inner side (right side in the figure) of the back frame 10 by one clip 41C. Specifically, the inner inner shield 40C has a concave hooking portion 42C formed at the lower end thereof hooked from the lower side to a protruding portion 11C formed by protruding the lower end portion of the side frame 11 from the lower side. Then, by aligning the hole 40Ca formed in the upper end portion of the inner inner shield 40C with the through hole H1 formed so as to penetrate the side frame 11, the clip 41C is inserted into these communicating hole portions, whereby the side frame 11 It is in the state where it was fixed to and attached. The inner inner shield 40C is a cylindrical container type that can cover the connecting portion between the base plate 20 on the vehicle inner side and the side frame 11 of the seat back 2 connected via the disc-shaped reclining device 30 from the lower front side. It is formed into a shape.

  The inner outer shield 40D is fitted into the base plate 20 on the vehicle inner side by being press-fitted from the outer side. The inner outer shield 40D covers the entire spiral spring 15 provided on the outer side portion of the side frame 11 inside the vehicle of the seat back 2 described above, and is connected via a disc-shaped reclining device 30. The connecting portion between the inner base plate 20 and the side frame 11 of the seat back 2 is formed in a cylindrical container shape that can cover the upper front side.

  Next, a specific configuration of the back frame 10 described above will be described. The back frame 10 is configured by being assembled in a substantially square frame shape. Specifically, the back frame 10 is bridged between a pair of left and right side frames 11 made of vertically long steel plates constituting the skeletons on both the left and right sides, and the upper ends of these side frames 11, and is integrally rigid. The upper frame 12 that forms the skeleton of the upper portion of the seat back 2 is combined and configured in an inverted U-shape. The back frame 10 has a reinforcing plate 13 spanned between the leg portions of the upper frame 12 and is integrally rigidly coupled, and a reinforcing pipe 14 is inserted between the side frames 11 so as to be integrated. By being rigidly connected to each other, the whole is assembled in a square frame shape. The upper frame 12 is formed of a circular steel pipe bent into an inverted U shape, and the leg portions on both the left and right sides thereof are formed in a semi-pipe shape formed at the upper end of each side frame 11, respectively. It is in a state in which it is fitted to the narrowed shape portion and welded and joined together.

  An L-shaped plate 11 </ b> B having a plate shape projecting outward is integrally coupled to the side surface portion of each side frame 11 described above. These L-shaped plates 11B are provided in such a state that their bent one side plate surfaces are respectively applied to the outer side surface portions of the side frames 11 and integrally joined by welding. Yes. These L-shaped plates 11B are formed on each of the above-described base plates 20 at the positions where the respective surface portions that are bent and project outward are tilted when the seat back 2 is tilted in the front-rear direction. The front-side locking portion 21 and the rear-side locking portion 22 that protrude in a square shape are brought into contact with each other, and by this contact, the rotation of the seat back 2 in the front-rear direction is locked at a predetermined position. It is supposed to let you.

  By the way, in each side frame 11 described above, a reinforcing frame 11A made of a vertically long steel plate material is superposed in the thickness direction in the lower region connected to each of the reclining devices 30 so as to be integrated. Are provided in a coupled state. Due to the coupling of these reinforcing frames 11A, each side frame 11 has a structure in which the structural strength of the lower region part that is easily subjected to a load action against bending thereof is partially increased. Here, each side frame 11 corresponds to a “seat frame” of the present invention, and each reinforcing frame 11A corresponds to an “attachment member” of the present invention.

  The above-described coupling between each side frame 11 and each reinforcing frame 11A is performed as follows. First, the side frames 11 and the reinforcing frames 11A are set on an assembly jig (not shown), and are set in a state where they are aligned with a predetermined assembly position. Next, in this state, some edge portions of each reinforcing frame 11 </ b> A are welded to each side frame 11. As a result, each reinforcing frame 11A is integrally coupled to each side frame 11 as being aligned at a predetermined assembly position.

  Specifically, the assembly jig (not shown) has two positioning pins standing upright, and the height direction formed on each side frame 11 with respect to these positioning pins. Are passed through the two through-holes H1, H2 in the shape of a circle and the two through-holes H1, H2 in the shape of the height formed in each reinforcing frame 11A. Each side frame 11 and each reinforcing frame 11A are set and held in a state where they are aligned with each other in a predetermined assembled state. And in this held state, each edge of each reinforcing frame 11A is welded to each side frame 11, so that each reinforcing frame 11A is aligned with a predetermined assembly position with respect to each side frame 11. As a single unit. Here, each of the through holes H1 and H2 corresponds to the “positioning hole” of the present invention.

  Here, at the time of connecting the side frames 11 and the reinforcing frames 11A, the L-shaped plates 11B that are integrally connected to the side frames 11 are also connected together. Specifically, each of the L-shaped plates 11B described above has two circular shapes arranged in the height direction that are passed through two positioning pins provided on the above-described assembly jig (not shown). Through holes H1 and H2 are formed. By passing these through holes H1 and H2 through the positioning pins, the L-shaped plates 11B are also set to be aligned together on the reinforcing frames 11A. Hold. Then, in this held state, the respective edge portions of the L-shaped plates 11B are welded to the reinforcing frames 11A, so that the L-shaped plates 11B are aligned with the respective reinforcing frames 11A at predetermined assembly positions. As a state, it is integrally connected. Here, each L-shaped plate 11B corresponds to an “attachment member” of the present invention.

  Further, the above-described second cable hooking plate 11D is also coupled to the coupling portion between the vehicle-side side frame 11 and the reinforcing frame 11A shown in FIGS. Specifically, two circular circles arranged in the height direction that can be passed through the two positioning pins erected on the above-described assembly jig (not shown) also in the second cable hanging plate 11D. After the side frame 11 and the reinforcing frame 11A are coupled, the plate surface of the coupled side frame 11 is repeatedly set on the positioning pin and overlapped with this. By passing the through holes H1 and H2 of the second cable hooking plate 11D through the positioning pins, the second cable hooking plate 11D is set and held in a state where it is aligned with a predetermined assembly position on the side frame 11. It will be in the state. In this held state, the second cable hooking plate 11D is aligned with the side frame 11 at a predetermined assembly position by welding the edges of the second cable hooking plate 11D to the side frame 11. As a state, it is integrally connected. Here, the second cable hooking plate 11D corresponds to the “attachment member” of the present invention.

  In each side frame 11 in which the attachment members such as the reinforcing frame 11A and the L-shaped plate 11B are integrally assembled by the above-described procedure, the through holes H1 and H2 that function as positioning holes at the time of positioning described above are provided. It remains as a penetrating state so as to communicate in the thickness direction. Therefore, in this embodiment, each of the through holes H1 positioned on the higher side of the through holes H1 and H2 is attached to the outer inner shield 40B and the inner inner shield 40C by the clips 41B and 41C. To function as. Here, the outer inner shield 40B and the inner inner shield 40C each correspond to the “shield” of the present invention.

  Specifically, as shown in FIG. 2, the outer inner shield 40 </ b> B outside the vehicle has a hole 40 </ b> Ba formed in the upper end thereof aligned with a through hole H <b> 1 formed through the side frame 11. By inserting the clip 41B into the communicating hole, the side frame 11 is fastened and attached. The shaft portion of the clip 41B is inserted through the three plates of the reinforcing frame 11A, the side frame 11, and the L-shaped plate 11B outside the vehicle constituting the through hole H1, and the inserted shaft The outer peripheral surface with the protrusion of the portion is configured to engage with the inner peripheral surface of the through hole H1 and exert a retaining force. As a result, the outer inner shield 40 </ b> B is attached to the side frame 11 in a state of being firmly and integrally coupled.

  As shown in FIGS. 4 to 5, the inner inner shield 40 </ b> C on the vehicle inner side is aligned with a through hole H <b> 1 formed through the side frame 11 through a hole 40 </ b> Ca formed in the upper end portion thereof. By inserting the clip 41 </ b> C into the communicating hole, the clip is attached to the side frame 11. The clip 41C is inserted into the four plates of the second cable hooking plate 11D, the reinforcing frame 11A, the side frame 11, and the L-shaped plate 11B on the vehicle outer side that constitute the through hole H1. The outer peripheral surface with the projection of the inserted shaft portion engages with the inner peripheral surface of the through hole H1 to exert a retaining force. As a result, the outer inner shield 40 </ b> B is attached to the side frame 11 in a state of being firmly and integrally coupled.

  Thus, the positioning holes (through holes H1) formed through the side frames 11 and the respective attachment members such as the reinforcing frame 11A are used as mounting holes for the outer inner shield 40B and the inner inner shield 40C. Therefore, it is not necessary to separately provide a hole for assembling, and the structure for assembling the outer inner shield 40B and the inner inner shield 40C to the back frame 10 can be rationalized. Further, among the through holes H1 and H2 formed side by side in the height direction, by adopting a through hole positioned on the outer peripheral side as a mounting hole with respect to the shape of the outer inner shield 40B or the inner inner shield 40C. The operation of aligning the holes 40Ba and 40Ca with the through-holes H1 and inserting the clips 41B and 41C into these holes is easy to visually recognize from the outside, and improves the assembly workability of the outer inner shield 40B and the inner inner shield 40C. be able to.

  Further, by forming the through holes H1 and H2 side by side in the height direction, the installation width can be kept small in the front and rear direction compared to a configuration in which they are formed side by side in the front and rear direction. The frame structure can be made compact in the front-rear direction.

  As mentioned above, although the embodiment of the present invention has been described using one example, the present invention can be implemented in various forms in addition to the above example. For example, in the above-described embodiment, the side frame 11 of the seat back 2 is illustrated as the “seat frame” to which the “shield” of the present invention is assembled. However, the “seat frame” of the present invention is other than the side frame of the seat back. Various seat frames constituting a vehicle seat such as a frame, a seat cushion frame, and a base frame fixed on a floor can be employed. In the above-described embodiment, the reinforcement frame 11A, the L-shaped plate 11B, and the second cable hooking plate 11D are exemplified as the “attachment members” to be assembled to the “seat frame”, but the attachment members can be variously assembled to the seat frame. These members can be employed. Further, the shape and material of the “shield” of the present invention are not particularly limited, and various types can be adopted.

  Further, in the above embodiment, the clips 41B and 41C (see FIG. 2) are exemplified as means for attaching the “shield” of the present invention to the “seat frame”, but the “seat frame” and “attachment member” are penetrated. The shaft portion that is inserted into the positioning hole formed in this manner and attached thereto may be provided integrally with the “shield”. Further, as a configuration of this shaft portion, in addition to engaging with the positioning hole by being inserted into the positioning hole so as to be prevented from being detached, it is screwed into the positioning hole to be engaged with the retaining hole so as to be able to be prevented from coming off. Alternatively, it may be a state in which a hooking tool such as a C-ring is separately attached to the tip end inserted into the positioning hole so as to be prevented from coming off.

  Further, instead of using both of the positioning holes formed through the seat frame and the accessory member as the shield mounting holes, either one of the holes may be used as the shield mounting hole. . In this way, for example, the remaining other hole can be used for another purpose.

DESCRIPTION OF SYMBOLS 1 Vehicle seat 2 Seat back 3 Seat cushion 4 Headrest 10 Back frame 11 Side frame (seat frame)
11A Reinforcement frame (accessory member)
11B L-shaped plate (accessory)
11C Protruding part 11D Second cable hook (attachment member)
DESCRIPTION OF SYMBOLS 12 Upper frame 13 Reinforcement plate 14 Reinforcement pipe 15 Spiral spring 16 Damper 20 Base plate 21 Front side latching part 22 Rear side latching part 20A First cable hooking plate 30 Reclining device 31 Operation shaft 32A Arm member 32B Arm member 33 Transmission cable 33A One end 33B The other end 40A Outer outer shield 40Aa Bolt 41A Release lever 40B Outer inner shield (shield)
40Ba hole 41B clip 42B hanging part 40C inner inner shield (shield)
40Ca hole 41C clip 42C hanging part 40D inner outer shield F floor H1 through hole (positioning hole)
H2 through hole (positioning hole)

Claims (2)

A method for manufacturing a vehicle seat in which inner and outer accessory members and a shield are assembled to a seat frame,
Each of the attachment members has a positioning hole formed through the seat frame as a common positioning hole, and each positioning hole formed through the seat frame is aligned with the common positioning hole. The seat frame is integrally joined to the inner part and the outer part by welding, respectively.
The method of manufacturing a vehicle seat , wherein the shield is attached using all the positioning holes formed through the seat frame and the attachment members as attachment holes. A method for manufacturing a vehicle seat according to claim 1,
The positioning holes are formed at two positions penetrating the seat frame and the attachment members, respectively, and the positioning holes are formed at positions located on the outer peripheral side with respect to the shape of the shield. A method for manufacturing a vehicle seat , wherein a hole is employed as the mounting hole.

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