JP5023314B2 - Reclining seat structure - Google Patents

Description

  The present invention is an improvement of a reclining seat structure, and more specifically, when the backrest part (backrest cushion part) is tilted, the backrest part does not cause a positional shift with respect to the back part of the seated person. The present invention relates to a reclining seat structure that can be easily reclined while keeping a perfect fit, and has extremely high durability. Hereinafter, the term “backrest” is used synonymously with the backrest cushion portion, and the term “seat portion” is used synonymously with the seat cushion portion.

  As is well known, a reclining mechanism that can take a relaxed posture by adjusting the backrest to a desired angle is generally known for a sitting device such as a sofa.

  As a stool provided with such a reclining mechanism, there is conventionally known a stool in which a rear lower surface of a seat portion and a lower rear surface of a backrest portion are rotatably connected as shown in FIG. 14 (a). However, in the structure in which the seat portion and the backrest portion are connected at the rear as described above, when the backrest is tilted as shown in FIG. 14 (b), the rear surface of the seat portion and the lower side of the backrest portion on the seating surface side. A large gap I is formed between the back and the back, and the position of the back of the user seated on the seat and the backrest is displaced, and the back of the suit is moved up. There was an inconvenience that it became a bitter tea.

  In addition, the position deviation of the backrest part causes the lumbar support and the headrest provided in the backrest part to be displaced relatively upward, and the seated person fits properly after the backrest is tilted. It was very cumbersome because I had to move my body to position.

  On the other hand, in the prior art, as described in <Patent Document 1>, a seat part that is movable in the front-rear direction and a backrest part in which a rear upper part is connected to a rail column are rotatably connected on the seating surface side. By connecting the back side of both sides with an extension / retraction cylinder and further moving the backrest part and the rail pillar connection part up and down according to the back and forth movement of the seat part, the backrest part can be at an arbitrary angle. A reclining mechanism for a seating device that can be tilted is also known.

  However, in the above-mentioned conventional reclining mechanism, when the backrest part is tilted and used, the load received by the weight of the seated person is concentrated on the connection part of the backrest part and the rail pillar, so that it fails due to repeated use. There was a high possibility of the occurrence of a problem, and there was a problem in terms of durability.

  In the reclining mechanism according to the above <Document 1>, it is necessary to fix and stand the rail column behind the seating device, so that not only an extra installation space is required, but also the place of the seating device is arranged. There were also dissatisfaction with the installation, such as being limited to the place where the rail pillar was provided.

In the reclining mechanism, the pivot point of the backrest relative to the base frame is arranged at the upper part of the backrest, so that when the backrest is tilted, the seat part jumps forward greatly from the base frame. In the case where an ottoman for placing a foot was placed in front of the seat, there were many inconveniences in use, such as when the back was raised and the seat was retracted, the ottoman had to be pulled forward. .
JP 2000-175774 A (paragraph number [0034], FIG. 7)

  The present invention has been made in view of the above-described problems, and the object of the present invention is to cause a positional deviation between the back of the seated person and the backrest even if the seated person tilts the backrest. This provides a reclining seat structure that can be easily reclined while maintaining a perfect fit, and that has no hindrance in installation and use, and is extremely durable. There is.

  Means adopted by the present inventor for solving the above problems will be described with reference to the accompanying drawings.

That is, according to the present invention, the seat cushion portion 1 whose bottom portion is supported by the seat frame frame 11; the backrest cushion portion 2 slidably disposed on the support plate portion 43 of the bell crank 4; And a base 3 provided with a rising support portion 31 that rotatably supports a bent portion 41 of the bell crank 4 on the rear side. ,
Further, the lower end portion 42 of the bell crank 4 is pivotally connected to the rear end portion 11a of the seat frame 11, and the rear upper surface of the seat cushion portion 1 and the lower front surface of the backrest cushion portion 2 are connected. In addition, on the rear side of the connecting portion C, a movable space S is formed between the lower surface of the backrest cushion portion 2 and the upper surface of the seat cushion portion 1, and the backrest cushion portion 2 is mounted on the seat cushion portion 1. By making it possible to swing while placed,
When the seat cushion portion 1 is slid forward, the seat frame 11 is moved forward by pulling the lower end portion 42 of the bell crank 4, so that the support plate portion 43 of the bell crank 4 is interlocked with this movement. The backrest cushion portion 2 tilts backward and tilts within the range of the movable space S around the connecting portion C with the seat cushion portion 1, while tilting backward with the rising support portion 31 as a fulcrum.
When the seat cushion part 1 is retracted and slid while the backrest cushion part 2 is in an upright posture, the seat frame 11 pushes the lower end part 42 of the bell crank 4 and interlocks with this pushing. Then, the support plate portion 43 of the bell crank 4 is raised and tilted by being moved rearward, and the backrest cushion portion 2 is characterized in that it can be tilted in the standing direction around the connecting portion C.

  Further, in the present invention, in order to solve the above-described problems, a runner boss R is disposed on the back frame 21 of the backrest cushion portion 2 in addition to the above means as necessary. It is possible to adopt a technical means in which the back frame frame 21 and the bell crank 4 are slidably connected by being inserted into a channel member 44 fixed to the upper part of the crank 4.

  Further, in the present invention, in order to solve the above-described problems, a positioning rod 51 is connected to the beam 11b at the front end of the seat frame 11 of the seat cushion portion 1 in addition to the above means as necessary. The backrest cushion portion 2 can be arbitrarily attached by attaching a stopper mechanism 5 that holds the positioning rod 51 at an arbitrary position by holding the positioning rod 51 by opening and closing the chuck 52. It is possible to adopt a technical means that enables fixing at an inclination angle of.

Further, in the present invention, in order to solve the above-described problem, in addition to the above-described means, the seat cushion portion 1 whose bottom portion is supported by the seat frame 11, the backrest cushion portion 2, and the rear portion rise as necessary. The support 3 has a base 3 on which the cushions 1 and 2 are placed and supported, and the backrest cushion 2 is supported. The rear surface of the backrest cushion 2 is relatively slid in the vertical direction. A bell-folded portion 41 that is freely abutted and has an intermediate portion near the lower portion bent in a mountain-fold shape is provided with a bell crank 4 that is swingably supported with the rising support portion 31 of the base 3 as a fulcrum,
The rear upper surface of the seat cushion portion 1 and the lower front surface of the backrest cushion portion 2 are connected so as to be bendable, and the entire backrest cushion portion 2 can be reclined on the base 3 around the connecting portion C. In addition, the rear end portion 11a of the seat frame 11 of the seat cushion portion 1 and the lower end portion 42 of the bell crank 4 are pivotally connected, and the seat cushion portion 1 is connected to the seat frame frame 11 on the base 3. It is installed so that it can move forward and backward.
When the seat cushion part 1 is slid forward, the seat frame 11 is moved forward by pulling the lower end part 42 of the bell crank 4, so that the upper part 43 of the bell crank is linked to the rising support. The backrest cushion portion 2 tilts backward with the portion 31 as a fulcrum, and the backrest cushion portion 2 tilts back and forth around the connecting portion C with the seat cushion portion 1.
When the seat cushion part 1 is retracted and slid while the backrest cushion part 2 is in the leaning posture, the seat frame 11 pushes the lower end part 42 of the bell crank 4 and interlocks with this pushing. It is possible to adopt a technical means that the upper part 43 of the bell crank is moved rearward and tilted up with the rising support part 31 as a fulcrum so that the backrest cushion part 2 can be tilted in the rising direction. it can.

  In the present invention, the seat portion and the backrest portion are connected to each other so as to be foldable on the seating surface side, and the bell crank is connected to the rear surface of the backrest portion so as to be slidable in the vertical direction, and the lower end of the bell crank is connected to the seat portion. By connecting the rear end of the bell crank to the rising support portion of the base so that it can swing freely, the seat attached to the base can be slid forward or backward. For example, the seat can pull the lower end of the bell crank and tilt the upper part of the bell crank backward or forward, so that the back part can be freely moved while sliding the rear surface of the back part downward or upward. It is possible to tilt to the angle of.

  In addition, by connecting the rear upper surface of the seat (seat cushion) and the lower front of the backrest (backrest cushion) on the seating surface side, there will be a gap in the seating surface even if the backrest is tilted Therefore, it is possible to perform reclining while keeping the body perfectly fitted to the seating surface, and the relative position of the back and back of the seated person that causes wrinkles of clothes Misalignment can be prevented, and the lumbar support and headrest are not misaligned, so there is no need to sit back after reclining.

  Also, by providing the bell crank folds to be supported by the base closer to the bell crank lower part, the upper part of the bell crank can be brought into contact with the back rest part and stably supported. Distributing the applied load can prevent failure due to load concentration.

  In addition, because the mountain-folded part is located at the lower part of the bell crank, it is possible to suppress the movement width of the seat part in the front-rear direction accompanying the tilting of the backrest part, so reclining even if an ottoman is placed in front of the seat part It is not necessary to change the position before and after the operation, and since it is not necessary to use a fixing member such as a rail post for installation, the installation location is not unnecessarily limited.

  Therefore, according to the present invention, it is possible to provide a reclining seat structure that has an excellent reclining function and is very convenient in terms of use and installation, and therefore, it can be said that the practical utility value of the present invention is very high.

“Example 1”
The first embodiment of the present invention will be described in more detail with reference to FIGS. First, in the figure, what is indicated by reference numeral 1 is a seat cushion portion, and what is indicated by reference numeral 2 is a backrest cushion portion. What is indicated by reference numeral 3 is a base, and what is indicated by reference numeral 4 is a bell crank. Also, what is indicated by reference numeral 5 is a stopper mechanism.

  Next, the configuration of the present embodiment will be described below. First, in this embodiment, the seat cushion portion 1 is formed by disposing the seat frame 11 on the bottom of the cushion member, the backrest cushion portion 2 is disposed, and the back frame 21 is disposed on the rear portion of the cushion member. (See FIGS. 1 and 2).

  Then, the rear upper edge of the seat cushion part 1 and the lower front surface of the backrest cushion part 2 are connected by a connecting member C, and the backrest cushion part 2 is folded with respect to the seat cushion part 1 around the connecting part C. It was configured to be free to bend.

  In this embodiment, high-resilience urethane foam is used for the cushion members of the seat cushion portion 1 and the backrest cushion portion 2, and a highly rigid metal tube material is used for the seat frame frame 11 and the back frame frame 21. ing.

  The cushion member of the seat cushion portion 1 is covered with the cover material A together with the seat frame frame 11 to integrally form the both, and the backrest cushion portion 2 is formed by cutting out the cushion member and forming the back frame frame. After embedding 21, they are covered with a cover material A to integrate them (see FIGS. 3 and 4).

  Further, in this embodiment, a band-shaped elastic fabric is used as a connecting member between the seat cushion portion 1 and the backrest cushion portion 2, and this fabric is inserted into the notches of the cover material A covering the cushion portions 1 and 2. The joint part C of both is formed by sewing (refer FIG. 5).

  Next, the seat frame 11 of the seat cushion portion 1 is attached to the base 3 so that a predetermined area can be moved forward and backward, and the rear end portion 11a of the seat frame frame 11 has an upper portion of the backrest cushion portion 2. A lower end portion 42 of a bell crank 4 which is connected to the back frame frame 21 so as to be relatively slidable in the vertical direction and can support the cushion portion 2 is pivotally connected to be supported.

  The bell crank 4 is fixed to the base 3 so as to be swingable by pivoting a projection 41a of a mountain-folded portion 41 formed at an intermediate portion near the lower portion to a rising support portion 31 at the rear of the base 3. did.

  In this embodiment, a runner boss R is disposed on the back frame 21 of the backrest cushion portion 2, and the runner boss R is fitted into a channel member 44 fixed to the support plate portion 43 at the top of the bell crank 4. Are slidably linked.

  With the configuration as described above, as shown in FIG. 6, when the seat cushion portion 1 is slid forward from the rear, the seat frame 11 pulls the lower end portion of the bell crank 4, In order to tilt the upper part backward, the backrest cushion part 2 can be tilted backward while sliding on the bell crank 4.

  On the other hand, if the seat cushion part 1 is slid from the front to the rear, the seat frame 11 pushes the lower end part 42 of the bell crank 4 backward, and the upper part of the bell crank 4 rises and tilts by the pushing and back. The rest cushion part 2 can be erected.

  In the present embodiment, the seat cushion portion 1 can be moved forward and backward by tilting the guide portion 32 of the base 3 that slides the seat cushion portion 1 back and forth so that the seat occupant has the center of gravity as the seat cushion portion. When placed on 1, the seat cushion portion 1 can automatically slide backward to raise the backrest cushion portion 2.

  When the seat occupant moves the center of gravity onto the backrest cushion portion 2, the seatrest portion 1 can be tilted backward while the seat cushion portion 1 is slid forward, thereby raising the seat occupant. In addition, reclining can be performed simply by moving the center of gravity.

  At this time, since the rotational resistance due to friction is applied between the rising support portion 31 of the base 3 and the protruding portion 41a of the mountain bent portion 41 of the bell crank 4, the backrest cushion portion 2 suddenly tilts or There is no standing up and you can recline slowly and safely.

  Furthermore, since the seat cushion portion 1 and the backrest cushion portion 2 are connected on the seating surface side, there is no gap in the seating surface even if the backrest cushion portion 2 is tilted, and the body can be reclined. It is possible to maintain a state that fits perfectly on the seating surface.

  Further, in this embodiment, the mountain-folded portion 41 of the bell crank 4 is formed closer to the lower portion of the bell crank 4, so that the upper portion of the bell crank 4 is brought into contact with and the backrest cushion portion 2 can be stably supported. It becomes possible, and the load added to the backrest cushion part 2 can also be disperse | distributed.

  In particular, in the present embodiment, the support plate portion 43 is formed on the top of the bell crank 4 so that the backrest cushion portion 2 is surface-supported, so that the load distribution effect is very high.

  Further, by providing a protrusion 41a pivotally attached to the rising support portion 31 of the base 3 at the lower portion of the bell crank 4, the width of movement of the seat cushion portion 2 in the front-rear direction when the backrest cushion portion 2 tilts or rises. Therefore, even if an ottoman is placed in front of the seat, there is no need to change its position before and after reclining.

  In this embodiment, a positioning rod 51 is connected to the beam 11b at the front end of the seat frame 11 of the seat cushion portion 1, and this positioning rod 51 is gripped by a chuck 52 disposed in the base 3, A stopper mechanism 5 is provided for fixing the positioning rod 51 at an arbitrary position by opening and closing the chuck 52.

  Thus, after the chuck 52 of the stopper mechanism 5 is opened and the backrest cushion part 2 is tilted to an arbitrary tilt angle, the chuck 52 is closed and the positioning rod 51 is fixed. Can be determined (see FIG. 7).

  Further, in this embodiment, a wire chuck 52 is used for the stopper mechanism 5, and the operation method thereof is that the chuck 6 can be opened by pulling up the lever 53 disposed on the side of the seat cushion portion 1. Further, when the hand is released from the pulled lever 53, the lever 53 is lowered to the original position and the chuck 52 can be closed.

  The stopper mechanism 5 does not include the positioning rod 51 and the chuck 52, but may employ other mechanisms such as a ratchet mechanism as long as the backrest cushion portion 2 can be fixed at an arbitrary tilt angle. Of course, it is also possible.

“Example 2”
Next, a second embodiment of the present invention will be described in detail below with reference to FIGS. In this embodiment, a structure is employed in which the rear surface of the backrest cushion portion 2 abuts against the upper portion of the bell crank 4 so as to be relatively slidable in the vertical direction (see FIGS. 8 and 9).

  In particular, in this embodiment, the contact surface of the support plate portion 43 on the top of the bell crank 4 facing the rear surface of the backrest cushion portion 2 is ceramic coated to reduce the friction, so that the backrest cushion portion on the support plate portion 43 is reduced. 2 can be slid smoothly.

  Further, in this embodiment, the upper portion of the bell crank 4 is formed to extend to the uppermost portion of the backrest cushion portion 2, so that the contact area is enlarged and the backrest cushion 2 can be supported more stably.

  Further, in the present embodiment, the seat frame 11 of the seat cushion portion 1 is formed in a plate shape, and the cushioning member 11c is attached to the upper surface of the plate and the cushion member is fixed to integrate the two (FIG. 10). reference).

  In the present embodiment, the connecting member C of the seat cushion portion 1 and the backrest cushion portion 2 is formed as a zipper as shown in FIG. 11A, so that the zipper as shown in FIG. By opening and closing, both the cushion parts 1 and 2 can be easily connected and disassembled, and convenience in transportation and accommodation can be improved.

  Note that a well-known velvet surface-mounted fastener can be used as the detachable connecting means C between the seat cushion portion 1 and the backrest cushion portion 2.

  The present invention is generally configured as described above. However, the present invention is not limited to the illustrated embodiment, and various modifications can be made within the scope of the claims, for example, a sheet. As long as the structure of the cushion part 1 is a form in which the seat frame 11 and the cushion member are integrated, a fitting structure as shown in FIG. 12 can also be adopted.

  Further, regarding the connection structure of the backrest cushion portion 2 and the bell crank 4, if both are connected so as to be relatively slidable, an L-shaped insertion member P is attached to the back frame frame 21 as shown in FIG. The insertion member P may be attached and inserted into a receiving hole 45 formed in the support plate portion 43 of the bell crank 4, and the backrest cushion portion 2 may be formed by the back frame 21. The form arrange | positioned locally at the cushion member may be sufficient.

  Further, the sliding structure of the seat cushion portion 1 with respect to the base frame 3 can be appropriately changed as long as the predetermined region can be moved back and forth, and both belong to the technical scope of the present invention.

  In recent years, stool equipment with a reclining function has been widely used in hairdressing salons, hospitals, nursing homes, trains, and other vehicles, and recently, in order to have a relaxing time at home, Reclining sofas that can be defeated and take a comfortable posture are very popular.

  Under such circumstances, the reclining seat structure of the present invention can dramatically improve comfort by improving body fit during use, and is also an epoch-making product with excellent safety and usability. Therefore, it can be said that the industrial use value of the present invention is very high.

It is a whole perspective view showing the reclining seat structure in Example 1 of this invention. It is explanatory sectional drawing showing the reclining seat structure in Example 1 of this invention. It is a whole perspective view showing the seat cushion part in Example 1 of the present invention. It is a fragmentary perspective view showing the connection structure of the backrest cushion part and bell crank in Example 1 of this invention. It is a fragmentary perspective view showing the connection structure of the seat cushion part and backrest cushion part in Example 1 of this invention. It is explanatory sectional drawing showing the use condition of the reclining seat structure in Example 1 of this invention. It is a disassembled perspective view showing the stopper mechanism of the reclining in Example 1 of this invention. It is a whole perspective view showing the reclining seat structure in Example 2 of this invention. It is explanatory sectional drawing showing the use condition of the reclining seat structure in Example 2 of this invention. It is a fragmentary perspective view showing the structure of the seat cushion part in Example 2 of this invention. It is a fragmentary perspective view showing the connection structure of the seat cushion part and backrest cushion part in Example 2 of this invention. It is explanatory sectional drawing showing the connection structure of the backrest cushion part and bell crank in the modification of this invention. It is a whole perspective view showing the structure of the seat cushion part in the modification of this invention. It is explanatory sectional drawing showing the reclining seat structure in the past.

Explanation of symbols

1 Seat cushion
11 Seat frame
11a Rear end
11b beam
11c Surface covering material 2 Backrest cushion
21 Back frame 3 Base
31 Rise Support Department
32 Guide 4 Bell crank
41 Mountain break
41a Projection
42 Bottom edge
43 Support plate
44 Channel members
45 Receiving hole 5 Stopper mechanism
51 Positioning rod
52 Chuck
53 Lever C Joint A Cover material R Runner boss P Insertion piece

Claims (3)

A seat cushion portion (1) whose bottom is supported by a seat frame (11) ; a backrest cushion portion (2) slidably disposed on a support plate portion (43) of the bell crank (4); The seat frame (11) is attached so as to be able to move forward and backward, and has a rising support portion (31) for rotatably supporting the bent portion (41) of the bell crank (4) on the rear side. It consists of a base (3),
Further, the lower end portion (42) of the bell crank (4) is pivotally connected to the rear end portion (11a) of the seat frame frame (11), and the upper surface of the rear portion of the seat cushion portion (1) and the back surface. The lower front surface of the rest cushion part (2) is connected, and on the rear side of the connected part (C), there is a movable space between the lower surface of the backrest cushion part (2) and the upper surface of the seat cushion part (1). S) is formed, and the backrest cushion part (2) is configured to be swingable in a state of being placed on the seat cushion part (1).
When the seat cushion part (1) is slid forward, the seat frame (11) is moved forward by pulling the lower end part (42) of the bell crank (4). The support plate portion (43) of the bell crank (4) is tilted backward with the rising support portion (31) as a fulcrum, and the backrest cushion portion (2) has a connection portion (C) with the seat cushion portion (1). While tilted back and forth within the movable space (S) at the center,
When the seat cushion part (1) is pulled backward and slid while the backrest cushion part (2) is in an upright posture, the seat frame (11) pushes the lower end part (42) of the bell crank (4). By pushing and moving backward in conjunction with this pushing, the support plate portion (43) of the bell crank (4) rises and tilts, and the backrest cushion portion (2) is connected to the connecting portion (C). A reclining seat structure characterized in that it can be tilted in the standing direction around the center. While disposed in the back frame frame (21) of the runner boss (R) of the backrest cushion part (2), fitted to the runner boss (R) a bell crank (4) channel member fixed to the upper (44) The reclining seat structure according to claim 1, wherein the back frame frame (21) and the bell crank (4) are slidably connected to each other. Connecting the seat frame frame (11) positioning the rod with respect to the front end of the beam (11b) (51) of the seat cushion portion (1), were provided with the positioning rod (51) in the base (3) chucks ( 52) , and a stopper mechanism (5) for fixing the positioning rod (51) at an arbitrary position by opening and closing the chuck (52 ) is attached, so that the backrest cushion part (2) is tilted arbitrarily. The reclining seat structure according to claim 1 or 2, wherein the reclining seat structure can be fixed at an angle.