JP3967710B2 - Reclining device - Google Patents

Description

  The present invention relates to a reclining device such as a chair.

  2. Description of the Related Art Conventionally, a reclining device in a chair or the like is provided with a seat back part that supports a person's back and a seat part that supports a person's waist and legs, and the seat back part generally rotates in the front-rear direction relative to the seat part. It is like that. The seat back portion and the seat portion are connected by, for example, a hinge member.

  The connecting structure using the hinge member is a well-known structure, and there is no prior art document related to the present invention.

However, in a normal reclining device, the position of the seat portion in the front-rear direction and the up-down direction is fixed, and only the rotation of the seat back portion in the front-rear direction is performed.
In general, when sitting in a chair with a reclining device and taking an easy posture, the seat back part is rotated backward and tilted, and at the same time the front end part of the seat part is lifted upward so that the human knee is almost the same height as the heart. In view of smooth circulation to the legs of blood, it is preferable to keep the blood pressure at the same level. However, if the position of the seat part in the front-rear direction and the up-down direction is fixed, it is difficult to keep the person's knee part at the same height as the heart even if the seat back part is tilted backward. It was.

  Further, there is a reclining device that facilitates rotation of a hinge member that connects the seat back portion and the seat portion and includes a manual lever, an electric motor, etc. on the hinge member in order to stop the seat back portion at an arbitrary seat back position. Sometimes used. However, a reclining device equipped with a manual lever, an electric motor, etc. has a complicated structure and increases the number of parts, and a tool such as a screwdriver or a spanner is required to assemble and disassemble the reclining device. In addition, if the manual lever or the electric motor is consumed or damaged, the reclining device will fail.

The present invention has been made in view of such circumstances, and has the following three purposes.
A first object is to provide a reclining device that can keep a person's knee at approximately the same height as the heart when the back member that supports the person's back is tilted backwards to take a comfortable posture. .

  A second object is to provide a reclining device capable of stably obtaining an arbitrary reclining position only by adding a person's weight and moving a knee or a leg instead of an operation using an electric switch or a manual lever. .

  The third purpose is that it can be assembled and disassembled by hand without using parts that can be worn or damaged such as manual levers or electric motors, and without using tools such as screwdrivers or spanners. To provide a reclining device having a simple structure and a durability.

In order to achieve the above object, a reclining device according to the first aspect of the present invention comprises:
A reclining device in which the backrest tilts in conjunction with the movement of the seat in the longitudinal direction,
A substrate stretched in the front-rear direction on the base including the legs,
A guide member that is erected on both sides of the substrate and is movable back and forth with respect to the substrate;
A back member rotatably coupled to the guide member;
A back member rotation roller attached to the guide member and serving as a rotation center of the back member;
A back member rotation guide groove for defining a rotation path of the back member; and a back member guide roller disposed in the back member rotation guide groove. The base portion is configured to guide the rotation movement of the back member. A rotation guide mechanism provided;
A first roller attached to the guide member and rotating and sliding on the substrate;
A guide roller attached to the guide member, rotating and sliding on the lower surface of the substrate, and guiding the back-and-forth movement of the guide member together with the first roller;
A braking member for pressing the guide member against the lower surface of the substrate;
A braking roller attached to the guide member and supporting the braking member;
A seat member coupled to the first roller and moving in the front-rear direction in conjunction with the rotation of the back member;
With the forward movement of the seat member, in order to separate the end portion of the seat member opposite to the first roller mounting portion upward from the substrate, an inclined base provided at the front end portion of the substrate;
A second roller attached to the seat member and slidably sliding on the tilt table;
Consisting of
When the first roller is disposed at substantially the center of a triangle having the guide roller, the braking roller, and the back member rotating roller as three points, and when a downward load is applied to the seat member, Due to the moment generated around the first roller by the load transmitted from the seat member to the second roller, a force in a direction to press the substrate against the brake roller is generated.
Further, when a backward load is applied to the back member, an upward force is generated on the back member rotating roller due to a moment generated around the back member guide roller, thereby pressing the substrate against the braking roller. It is characterized by the generation of force .

  According to such a configuration, when a backward load is applied to the back member of the reclining device, the back member of the reclining device is guided by the rotation guide mechanism provided in the base portion and rotated rearward to be coupled to the back member. The guide member thus moved moves forward along the substrate. When the guide member moves forward, the seat member attached to the guide member and rotatably coupled to the first roller that rotates and slides on the substrate moves forward. When the seat member moves forward, the second roller rotates and slides forward on the inclined base attached to the seat member and provided at the front end portion of the substrate, and is opposite to the first roller attaching portion of the seat member. Since the side end portion, that is, the front end portion of the seat member is separated upward from the substrate, the knee portion of the person is aligned at substantially the same height as the heart. Thereby, when taking an easy posture, the smooth circulation of the blood to a human leg can be maintained naturally.

In addition, since the guide member is provided with a guide roller that is attached to the guide member and rotationally slides on the lower surface of the substrate and induces the back-and-forth movement of the guide member together with the first roller, the back-and-forth movement of the guide member is controlled by the first roller and the guide roller. And induced by. Therefore, the longitudinal movement of the guide member is performed stably and smoothly.

Further, since the brake member for pressing the guide member against the lower surface of the substrate and the brake roller attached to the guide member and supporting the brake member are provided, the guide is provided by pressing the brake member against the lower surface of the substrate. The member can be pressed against the substrate and braked to lock the back-and-forth movement of the guide member.

And since the said 1st roller is arrange | positioned in the approximate center of the triangle which makes the said guide roller, the said braking roller, and the said back member rotation roller 3 points | pieces, a downward load is applied to the said seat member. When the load transmitted from the seat member to the second roller is generated around the first roller, a force is generated in a direction to press the substrate against the braking roller, and thereby an upward force is applied to the guide member. And the braking member attached to the guide member is pressed against the substrate. Thus, the guide member is locked when the braking member is pressed against the substrate.
In this state, when a backward load is further applied to the back member, an upward force is generated on the back member rotating roller due to a moment generated around the back member guide roller . As a result, a force is generated in such a direction as to press the substrate against the brake roller, and an upward force is generated on the guide member, so that the brake member attached to the guide member is pressed against the substrate. Accordingly, the pressing force of the braking member against the substrate is further increased, and the locking force of the guide member is further increased.

  In this case, at any reclining position of the back member, the guide member is locked only by applying a downward load to the seat member and further applying a backward load to the back member. It can be stably stopped at any position. Moreover, since this operation is performed only by applying a downward load to the seat member by a leg or knee and a backward load to the back member, there is no need to provide an electric switch or a manual lever on the reclining device. No operation with a switch or manual lever is required.

Since an electric switch or manual lever is not used, the structure is simplified, and assembly and disassembly work can be performed by hand without using a screwdriver or a wrench tool.
The invention of claim 2, in the reclining device according to claim 1 wherein the first shielding to prevent insertion of such fingers between the front lower portion of the rear end portion and the back piece of the seat member A board is provided.

  According to such a configuration, since the first shielding plate is provided, a finger or the like is not inserted between the rear end portion of the seat member and the front lower end portion of the back member. There is no fear of inserting a finger or the like between the rear end portion of the back member and the lower end portion of the front surface of the back member, and accidental injury can be prevented.

According to a third aspect of the present invention, there is provided the reclining device according to the first or second aspect, wherein a second finger for preventing insertion of a finger or the like between the rear lower end portion of the back member and the rear end portion of the substrate is provided. A shielding plate is provided.

  According to such a configuration, since the second shielding plate is provided, fingers or the like are not inserted between the rear lower end portion of the back member and the rear end portion of the substrate. There is no risk of inserting fingers between the lower end of the rear surface and the rear end of the substrate, and accidental injury can be prevented.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is an exploded perspective view of the reclining device. FIG. 2 is a side view showing a state before the reclining device is operated. FIG. 3 is a side view showing a state in which the reclining device is operating.

  The configuration of the reclining device will be described with reference to FIGS. Since the reclining device according to the present invention is bilaterally symmetrical, only the left side of the reclining device (LH direction side in FIG. 1) will be described in the following description, unless otherwise specified, and the right side of the reclining device (in FIG. 1). Description of the (RH direction side) will be omitted.

  The reclining device 2 shown in FIG. 1 includes a substrate 3, a guide member 20, a seat member 30, an inclined base 38, a back member 50, an armrest member 10, a first shielding plate 39, a second shielding plate 69, and the like.

  The substrate 3 is a plate-like member that is stretched in the front-rear direction (F or R direction in FIG. 1) on the base portion 12 that constitutes the armrest member 10 having legs formed in the lower portion shown in FIG. The front side (the F direction side in FIG. 1) of the substrate 3 is supported by the front frame 4. The front frame 4 is a plate-like member provided in the left-right direction (LH or RH direction in FIG. 1), and front through bolts 6a attached to the front frame 4 extend from the left and right ends in the left-right direction. Screw portions (not shown) are provided at both left and right ends of the front through bolt 6a. The rear side (R direction side in FIG. 1) of the substrate 3 is supported by the rear frame 5. The rear frame 5 is a plate-like member provided in the left-right direction (LH or RH direction in FIG. 1), and rear through bolts 6b attached to the rear frame 5 extend in the left-right direction from the left and right ends. Yes. Screw portions (not shown) are provided at both left and right ends of the rear through bolt 6b.

  On the left and right sides of the substrate 3 (LH and RH directions in FIG. 1), guide members 20 are erected so as to face each other. The guide member 20 is provided to be movable back and forth with respect to the substrate 3. The guide member 20 is a polygonal plate member. The left and right guide members 20 are connected to each other by a first roller 21, a guide roller 23, a braking roller 27, and a back member rotating roller 55 provided in the left-right direction (LH or RH direction in FIG. 1).

  The first roller 21, the guide roller 23, the braking roller 27, and the back member rotating roller 55 are attached to the guide member 20 so as to be rotatable by bearings at both ends thereof. The first roller 21, the guide roller 23, the braking roller 27, and the back member rotating roller 55 are straight round bars, and are made of, for example, a steel material having a diameter of 10 to 12 mm.

  The first roller 21 is disposed substantially at the center of the guide member 20 and rotates and slides on the upper surface of the substrate 3 in the front-rear direction. The guide roller 23 rotates and slides in the front-rear direction along the lower surface of the substrate 3. Therefore, when the guide member 20 moves in the front-rear direction, the first roller 21 and the guide roller 23 rotate and slide so that the substrate 3 is sandwiched between the upper and lower sides, so that the front-rear movement of the guide member 20 is performed stably and smoothly. The first roller 21 also rotatably supports the seat member 30 as will be described later.

  The brake roller 27 supports the brake member 25 that is passed along the lower surface of the substrate 3 in the left-right direction. The braking member 25 corresponds to a locking means and is a prism having a quadrilateral cross section. The braking member 25 is attached to the braking roller 25 so that a minute gap δ shown in FIG. 2 is generated between the upper surface of the braking member 25 and the lower surface of the substrate 3.

The back member rotating roller 55 rotatably couples the back member 50 to the guide member 20.
As shown in FIG. 2, the first roller 21, the guide roller 23, the braking roller 27, and the back member rotating roller 55 are viewed from the side surfaces. The brake roller 27 that is attached and supports the brake member 25 and the back member rotation roller 55 that is attached to the guide member 20 and that is the rotation center of the back member 50 are arranged at substantially the center of a triangle formed by three points.

  The seat member 30 is a member that supports a human waist and legs. The seat member 30 is a seat plate 31 that supports a person's waist and legs, a front plate 33 that is a vertical member provided at the front end of the seat plate 31 in the left-right direction, and a front-rear direction at both left and right ends of the seat plate 31. It is comprised from the side plate 32 which is a vertical member. The seat plate 31, the front plate 33, and the side plate 32 can be bonded using bonding by an adhesive, bonding by screwing, or both. Alternatively, the seat plate 31, the front plate 33, and the side plate 32 may be integrally formed. The rear side of the seat member 30 is coupled to the guide member 20 around the first roller 21 by the first roller 21 described above.

  A second roller 34 is interposed between the left and right side plates 32 at substantially the center in the front-rear direction of the side plate 32 of the seat member 30. Both end portions of the second roller 34 are rotatably supported by second roller bearings 34a provided on the side plate 32 side. The 2nd roller 34 is a straight round bar, for example, is made from steel materials with a diameter of 10-12 mm.

  The second roller 34 rotates and slides along the upper surface of an inclined table 38 provided at the front end of the substrate 3. As shown in FIG. 2, the tilting table 38 has a flat surface extending forward (F direction in FIG. 2) and upward (U direction in FIG. 2) from the substrate 3, and forms a guide surface for the second roller 34. To do.

  The back member 50 is a member that supports a human back. The back member 50 includes a back member side plate 51 and a back plate 59. The back member side plate 51 and the back plate 59 can be bonded using bonding by an adhesive, bonding by screwing, or both. Alternatively, the back member side plate 51 and the back plate 59 may be integrally formed. A back member guide roller 58 is interposed between the left and right back member side plates 51 at substantially the center in the vertical direction of the back member side plate 51. Both ends of the back member guide roller 58 are rotatably supported by back member guide roller bearings 58a provided on the back member side plate 51 side. The back member guide roller 58 is a straight round bar, and is made of, for example, a steel material having a diameter of 10 to 12 mm. The back member guide roller 58 is moved along the back member rotation guide groove 18 provided in a part of the base portion 12 of the armrest member 10. The back member guide roller 58 and the back member rotation guide groove 18 correspond to a rotation guide mechanism that guides the rotational movement of the back member 50. Accordingly, as shown in FIG. 2, the back member 50 is rotated backward (R direction in FIG. 2) around the back member rotation roller 55, and the rotation locus thereof is on the base portion 12 of the armrest member 10 described later. It is defined by the provided back member rotation guide groove 18.

  The armrest member 10 is a member that supports a human elbow and arm. The armrest member 10 includes an armrest portion 11 and a base portion 12 as shown in FIG. As described above, the base member 12 is provided with the back member rotation guide groove 18 that constitutes a rotation guide mechanism for guiding the rotational movement of the back member 50. In order to couple the armrest member 10 to the substrate 3, a front through bolt 6 a extending from the front frame 4 to the left and right sides is passed through a through hole 13 provided on the front side of the base portion 12, and is gripped via a rear washer 14. The nut 14b is tightened from the outside. An embedded nut 14c shown in section AA in FIG. 1 is provided inside the grip nut 14b. Accordingly, the screw portions provided at the left and right ends of the through bolt 6a are screwed into the embedded nut 14c. Similarly, a rear through bolt 6 b extending from the rear frame 5 to the left and right sides is passed through a through hole 13 provided on the rear side of the base portion 12, and then a grip nut 14 b is tightened from the outside via a washer 14.

  According to such a configuration, the recliner 2 can be assembled only by gripping and tightening the nut 14b. Therefore, the structure is simple, and it is easy and short time only by hand without using a screwdriver or a tool such as a spanner. Can be assembled with. Even when the reclining device 2 is disassembled, it is only necessary to loosen the gripping nut 14b, and it can be disassembled easily and in a short time only by hand without using a screwdriver or a tool such as a spanner.

  The main components of the reclining device 2 include the substrate 3, the guide member 20, the seat member 30, the inclined base 38, the back member 50, the armrest member 10, the first shielding plate 39, the second shielding plate 69 and these members. These include rollers, bearings and screws to be connected. Once the rollers, bearings, screws, etc. are attached, there is almost no risk of wear or damage and there is almost no need to replace them. Accordingly, the reclining device 2 is excellent in durability because it does not use parts that may be consumed or damaged.

  The first shielding plate 39 is detachably fitted between the rear end portion of the seat member 30 and the front lower end portion of the back member 50, and the first shield plate 39 is formed between the rear end portion of the seat member 30 and the front lower end portion of the back member 50. The gap between them is always closed by the first shielding plate 39. Therefore, there is no possibility that fingers or the like are inserted between the rear end portion of the seat member 30 and the lower end portion of the front surface of the back member 50, and accidental injury can be prevented.

  The second shielding plate 69 is fitted between the rear lower end portion of the back member 50 and the rear end portion of the substrate 3, and the gap between the rear lower end portion of the back member 50 and the rear end portion of the substrate 3 is the first. 2 is blocked by a shielding plate 69. The second shielding plate 69 is pivotally supported by a pin 69b, and both ends of the pin 69b extend from the second shielding plate 69 in the left-right direction (LH or RH direction in FIG. 1), and the base of the armrest member 10 is supported. It is inserted in a hole (not shown) provided inside the portion 12. A balancer 69a for keeping the upper end (U direction side in FIG. 2) of the second shielding plate 69 in contact with the rear end surface of the back member 50 is always provided on the front surface (F direction side in FIG. 2) of the second shielding plate 69. Is provided. Therefore, even if the back member 50 rotates, the upper end of the second shielding plate 69 is always in contact with the rear end surface of the back member 50, so that the rear end surface of the back member 50 and the balancer 69, or the rear end surface of the back member 50 and the substrate 3. There is no fear of inserting a finger or the like between the rear end and the accidental injury can be prevented. The second shielding plate 69 and the balancer 69a can be formed separately in advance and joined with an adhesive or the like, but they may be formed integrally.

  Next, the operating state of the reclining device will be described with reference to FIGS. FIG. 2 shows a state before the reclining device is operated, and FIG. 3 shows a state where the reclining device is operating.

In FIG. 2, the seat member 30 is at the position of the rearmost end (R direction side in FIG. 2) of the substrate 3, and the back member 50 is in an upright state. In order to operate the reclining device from this state, a person sits on the seat member 30 and applies a rearward load g _b on the back plate 59 of the back member 50 on the back, and the back member 50 is moved backward (around the back member rotation roller 55). (R direction in FIG. 2).

  Then, as shown in FIG. 3, the guide member 20 moves forward (F direction in FIG. 3) in conjunction with the backward rotation of the back member 50. The rotation locus of the back member 50 is defined by the back member rotation guide groove 18 provided in the foot member 12 of the armrest member 10 and the back member rotation roller 55 moving in the groove as described above.

  When the guide member 20 moves forward, the seat member 30 coupled to the first roller 21 attached to the guide member 20 moves forward. When the seat member 30 moves forward, the second roller 34 attached to the seat member 30 rotates and slides forward along the inclined base 38. Accordingly, the front plate 33 which is the front end portion of the seat member 30 moves in a direction away from the substrate 3 upward (U direction in FIG. 3). In this way, since the back member 50 rotates rearward and the front end portion of the seat member 30 is lifted, the knee portion of the person using the reclining device is aligned at substantially the same height as the heart. With such an easy posture, the smooth circulation of blood to the human leg can be naturally maintained.

  In order to stop the back and forth movement of the seat member 30 and the rotation of the back member 50 in this state, the guide member 20 may be locked. In order to lock the guide member 20, weight may be added to the seat member 30 on which a person is sitting. That is, the toes that have been strung are removed from the floor surface, and a downward load (D direction in FIG. 3) Gd is applied to the seat plate 31 of the seat member 30 at the upper leg portion. Then, as shown in FIG. 3, an upward force is generated on the braking roller 27 due to the moment that the downward load Gd is generated around the first roller 21 via the second roller 34. As a result, an upward force is generated in the guide member 20, and the minute gap δ between the upper surface of the braking member 25 attached to the guide member 20 and the lower surface of the substrate 3 disappears, and the upper surface of the braking member 25 is the lower surface of the substrate 3. It is pressed by.

  Further, the locking of the guide member 20 further increases the locking force of the braking member 25 by applying the backward load Gb to the back member 50 when the downward load Gd is applied to the seat member 30 as described above. Can do. For this purpose, a person may push the back plate 59 of the back member 50 backward with his / her back and apply a backward load Gb to the back member 50. When a backward load Gb is applied to the back member 50, a moment generated around the back member guide roller 58 disposed in the back member rotation guide groove 18 that defines the rotation path of the back member 50 is applied to the back member rotation roller 58. An upward force is generated, and an upward force is generated on the braking roller 27. Accordingly, an upward force is similarly generated in the guide member 20, and the braking member 25 attached to the guide member 20 is pressed against the substrate 3. Therefore, the locking force of the braking member 25 is further increased. In this way, the locking force of the guide member 20 is further increased by pressing the braking member 25 against the substrate 3.

  In this case, since the guide member 20 is locked only by applying a downward load to the seat member 30 and applying a backward load to the back member 50 at any reclining position of the back member 50, the reclining device 2 is It can be stably stopped at any position without any steps. In addition, since this operation is performed only by applying a downward load to the seat member 30 by a leg or knee and applying a backward load to the back member 50, it is necessary to provide an electric motor, a manual lever or the like on the reclining device 2. There is no need to operate with an electric motor or manual lever.

  Next, in order to further recline the reclining device 2 locked at an arbitrary reclining position, when the foot is attached to the floor surface, the load applied to the seat member 30 by the upper leg portion is reduced. At the same time, the back plate 59 of the back member 50 may be pushed with the back to apply a backward load Gb to the back member 50. In order to lock the reclining device 2 at the position where the back member 50 is further rotated, the back and forth movement of the seat member 30 and the rotation of the back member 50 are stopped in the same manner as described above, and the guide member 20 is moved as follows. Lock it. That is, in FIG. 3, a downward load G direction (D direction in FIG. 3) is applied to the seat member 30 by legs, knees, or the like. An upward force is generated in the braking roller 27 by the moment that the downward load Gd is generated around the first roller 21 via the second roller 34. As a result, an upward force is generated in the guide member 20, and the minute gap δ between the upper surface of the braking member 25 attached to the guide member 20 and the lower surface of the substrate 3 disappears, and the upper surface of the braking member 25 is the lower surface of the substrate 3. It is pressed by.

  Further, in order to return the reclining device 2 that has been in the reclining position to the original state before the operation, the load applied to the seat member 30 by the upper leg portion is reduced downward by attaching the toes to the floor surface. At the same time, the back member 50 may be raised. As a result, the force of the body weight is released from the back member 50 and only the force of the body weight of the seat member 30 remains in the guide member 20, so that the guide member 20 moves rearward and the back member 50 rotates forward in conjunction with the movement. Become in a standing position.

  Although one embodiment of the present invention has been described above, the rotation guide mechanism according to claim 1 corresponds to the back member rotation guide groove 18 and the back member rotation guide roller 58. The locking means according to claims 3 and 4 corresponds to the braking member 25.

It is a disassembled perspective view of a reclining apparatus. It is a side view which shows the state before the operation | movement of a reclining apparatus. It is a side view which shows the state in operation | movement of a reclining apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 ... Reclining device 3 ... Board | substrate 4 ... Front side frame 5 ... Rear side frame 6a ... Front side through bolt 6b ... Rear side through bolt 10 ... Armrest member 11 ... Armrest Part 12 ... Base part 13 ... Through hole 14a ... Washer 14b ... Grip nut 14c ... Embedded nut 18 ... Back member rotation guide groove 20 ... Guide member 21 ... No. 1 roller 23: guide roller 25 ... braking member 27 ... braking roller 30 ... seat member 31 ... seat plate 32 ... side plate 33 ... front plate 34 ... second roller 34a ... second roller bearing 38 ... tilting base 39 ... first shielding plate 50 ... back member 51 ... back member side plate 55 ... back member rotation roller 55a ... back member rotation Roller bearing 58 ... Back member guide roller 58a ... back member guide roller bearing 59 ... back plate 69 ... second shielding plate 69a ... balancer 69b ... pin

Claims (3)

A reclining device in which the backrest tilts in conjunction with the movement of the seat in the longitudinal direction,
A substrate stretched in the front-rear direction on the base including the legs,
A guide member that is erected on both sides of the substrate and is movable back and forth with respect to the substrate;
A back member rotatably coupled to the guide member;
A back member rotation roller attached to the guide member and serving as a rotation center of the back member;
A back member rotation guide groove for defining a rotation path of the back member; and a back member guide roller disposed in the back member rotation guide groove. The base portion is configured to guide the rotation movement of the back member. A rotation guide mechanism provided;
A first roller attached to the guide member and rotating and sliding on the substrate;
A guide roller attached to the guide member, rotating and sliding on the lower surface of the substrate, and guiding the back-and-forth movement of the guide member together with the first roller;
A braking member for pressing the guide member against the lower surface of the substrate;
A braking roller attached to the guide member and supporting the braking member;
A seat member coupled to the first roller and moving in the front-rear direction in conjunction with the rotation of the back member;
With the forward movement of the seat member, in order to separate the end portion of the seat member opposite to the first roller mounting portion upward from the substrate, an inclined base provided at the front end portion of the substrate;
A second roller attached to the seat member and slidably sliding on the tilt table;
Consisting of
When the first roller is disposed at substantially the center of a triangle having the guide roller, the braking roller, and the back member rotating roller as three points, and when a downward load is applied to the seat member, Due to the moment generated around the first roller by the load transmitted from the seat member to the second roller, a force in a direction to press the substrate against the brake roller is generated.
Further, when a backward load is applied to the back member, an upward force is generated on the back member rotating roller due to a moment generated around the back member guide roller, thereby pressing the substrate against the braking roller. A reclining device characterized in that force is generated . The reclining device according to claim 1, wherein a first shielding plate for preventing insertion of a finger or the like is provided between a rear end portion of the seat member and a front lower end portion of the back member. . The reclining according to claim 1 or 2, wherein a second shielding plate for preventing insertion of a finger or the like is provided between a rear lower end portion of the back member and a rear end portion of the substrate. apparatus.

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