JP3746258B2 - Seat reclining device with load adjustment function - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seat reclining device (including a seat tumble mechanism) having a vehicle load adjustment function.
[0002]
[Prior art]
In the conventional seat reclining device, a leaf spring provided on an operating shaft penetrating the lock mechanism and the casing is locked to the casing and the operating shaft, and is operated through a handle operation attached to the casing. The shaft is rotated to lock and unlock (unlock) the locking mechanism and to tension and relax (release tension) the leaf spring. Therefore, in this conventional example, the folding of the reclining seat (referred to as a sheet) depends exclusively on the repulsive force of the leaf spring, so the impact at the time of folding sometimes causes an unexpected failure (referred to as [1] ). There are fears and manufacturing problems (referred to as [2] ). One example will be described. This [1] is to give an injury, fear to a weak person such as an infant, elderly person, sick person, etc. due to an impact, or a hard member provided on the outside constituting the seat causes damage to the weak person, and glasses etc. It is pointed out that damage or damage to the Also, [2] is a speedy response to sheet folding and / or standing (standing at an appropriate angle of inclination) and a change in speed for a sheet with a fixed structure or shape. It has been pointed out that it is difficult to perform, or that these operations are performed reliably, and that it is impossible to respond appropriately, in other words, there are problems that various aspects of the seat cannot be achieved. There is also an improved seat reclining device that is an improvement over the conventional seat reclining device. For example, as a means for complementing the spring, there is a secondary means such as a torsion spring or an improved seat reclining device equipped with an impact absorbing member or the like. However, this device can be expected to have a somewhat buffering effect, but there are problems such as that it is still not sufficient and the structure becomes complicated.
[0003]
Next, prior documents relating to this type of seat reclining device are listed. Document (1) is a reclining device disclosed in Japanese Patent Application Laid-Open No. 1-107708, and is configured to slow the return rotation of the seat back by the return spring by restricting the viscous grease on the movement of the rotating side member. Document (2) is a reclining device disclosed in Japanese Patent Application Laid-Open No. 9-252868. The friction force of a friction spring disposed in the drum-shaped cover of the return spring of the seat back is generated by the return of the return spring, and this friction force is generated. When the seatback is returned from the rearward tilt position to the front, the seatback return speed is reduced. Document (3) is a reclining device of Japanese Utility Model Publication No. Hei 6-70642, a first spiral spring that urges the seat back forward from a rearward tilt position to a forward tilt position, and the seatback from the forward tilt position to neutral. A second spiral spring that urges backward between positions is provided. The second spiral spring is weaker than the urging force of the first spiral spring, and the seatback rotation speed is changed to reduce the impact. It is the structure to do.
[0004]
[Problems to be solved by the invention]
The invention of Document (1) is a configuration using viscous grease. Therefore, it is necessary to ensure the sealing of the casing, and it has a special structure, so there are problems that require labor or experience in manufacturing, assembly, filling of viscous grease, etc., and durability problems of viscous grease, etc. There is. In the inventions and devices of Documents (2) and (3), a spring for restricting the movement of the return spring is provided. Therefore, the structure becomes complicated, the adjustment of the repulsive force between the opposing return spring and the spring is delicate, and careful assembly and abundant experience are required to ensure a reliable movement, or There are problems such as the need for experience and labor in assembling the device. Further, considering the structure, there are problems such as leaving a problem for the smooth movement of the sheet or causing an increase in cost.
[0005]
[Means for Solving the Problems]
In the invention of claim 1, by improving the casing and the spring, the spring is regulated and the seat is folded and / or raised, moved, etc. gently, thereby eliminating various impacts, or against this impact. Based on the above, to solve the above-mentioned adverse effects, and to achieve easy and quick assembly by using the simple structure constituted by this improvement, and easy and quick spring processing, etc. Is intended. In particular, the invention of claim 1 adjusts (finely adjusts) the load of the spring to avoid the spring's loosening (unstable tension and / or relaxation) and achieves generalization, convenience, etc. It is intended to ensure a reliable movement and smooth movement as described above, or to improve versatility and reduce the number of parts through the use of springs for compatible models. In addition, it is intended to simplify the structure of the regulating means, reduce costs, or facilitate management and production.
[0006]
The first aspect of the present invention includes a lock mechanism that controls locking and unlocking of the reclining mechanism, a casing that is secured to the locking mechanism, a spring that is locked at both ends of the casing, and a locking end of the spring that is provided on the casing. A seat having a load adjusting function provided with a moving groove, an operating means provided in the casing for operating the spring, a regulating means for the spring , and an adjusting means for adjusting the load on the regulating means A reclining device,
The adjusting means includes a screw hole provided in the casing and a screw provided in the screw hole, and the restricting means includes a plurality of substantially concave and convex engaging portions provided on the spring, A seat reclining device having a load adjusting function, characterized in that the seat reclining device comprises a flexible slider provided on a casing that is in sliding contact with a peripheral surface of a spring .
[0007]
[0008]
[0009]
[0010]
[0011]
[0012]
[0013]
The invention of claim 2 is intended to simplify the structure of the regulating means, to reduce the cost, or to facilitate management and production, and to achieve the object of claim 1.
[0014]
A third aspect of the present invention provides a seat having a load adjusting function in which when the casing according to the first aspect is secured to the lock mechanism, a hook piece of the casing body of the casing is connected to a leg of the lock mechanism. It is a reclining device.
[0015]
[0016]
[0017]
[0018]
[0019]
A third aspect of the present invention, by reliably return spring according to claim 1, that achieve acting blindly avoidance of the spring, also intended to achieve the object of the claim 1.
[0020]
A third aspect of the present invention is a seat reclining device having a load adjusting function in which the slider according to the first aspect is regulated by an auxiliary spring.
[0021]
The invention of claim 4 intends to ensure the function of the spring and achieve the object of claim 1.
[0022]
Claim 4, the engagement portion of the plurality of substantially uneven portion provided on the spring according to claim 1, a seat reclining apparatus provided with a load adjustment function where the structure either provided on one surface of the spring.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0024]
FIG. 1 is a schematic scale diagram of an embodiment in which the present invention is applied to a seat reclining device, FIG. 2 is a schematic scale diagram of an embodiment in which the present invention is applied to a seat tumble mechanism, and (A) is a standing state, (B) and (C) show each folded state. FIG. 3 is a schematic scale diagram of the embodiment in which the examples of FIG. 1 and FIG. 2 are combined. (A) shows the standing state, (B) and (C) show the folded states. Then, FIGS. 4 to 13 shows the first to third embodiments according to claim 1, 4 is a front view of a casing body of the first embodiment, FIG. 5 is a casing body of the first embodiment FIG. 6 is a sectional view of the casing body of the first embodiment fitted with the casing lid body, and FIG. 7 (a) shows the initial state of connection between the hook piece of the casing body and the legs of the lock mechanism. FIG. 8B is a diagram showing a state in which the hook piece of the casing main body and the leg of the lock mechanism are linked, FIG. 8 is a front view of the casing main body of the second embodiment, and FIG. 9 is a casing main body of the second embodiment. FIG. 10 is a cross-sectional view of the casing body fitted to the casing body of the second embodiment, FIG. 11 is a front view of the casing body of the third embodiment, and FIG. 12 is the casing body of the third embodiment. FIG. 13 is a rear view of the casing body of the third embodiment and the casing lid body. 14 is a front view of the casing body of the fourth embodiment, FIG. 15 is a rear view of the casing body of the fourth embodiment, and FIG. 16 is a casing lid body on the casing body of the fourth embodiment. FIG. 17 is an enlarged schematic view of the main part of FIG. 15, FIG. 18 is a guide groove provided in the casing body, (A) is a front view, (B) is a sectional view, and FIG. FIG. 20 is a back view of a partial cutout of the casing body of the sixth embodiment, and FIG. 21 is a partial cutout of the casing body of the seventh embodiment. FIG. 22 is a rear view of a part of the casing body of the eighth embodiment, FIG. 23 is an enlarged schematic view of the main part of FIG. 22, and FIG. 24 is a rear view of the casing body of the ninth embodiment. 25 is an example of a spring, (A) is a flat shape, (B) is a locking part on one side (upper surface). (C) is a perspective view showing an example of a shape having a locking part on one surface (side surface), (d) is a shape having a locking part on two surfaces (upper surface and side surface), and FIG. 26 is a sheet and a sheet FIG. 27 is a diagram illustrating the relationship between the form of each spring and the seat back load.
[0025]
In the figure, A is a vehicle seat, A1 is a seat cushion of seat A, and A2 is a seat back of seat A. B denotes a lock mechanism provided with a lock / unlock mechanism for controlling the standing and folding of the seat A.
[0026]
A first embodiment shown in FIGS. 4 to 6 will be described.
[0027]
Reference numeral 1 denotes a casing main body 1 having an annular rod 100 fixed to a main body B1 constituting the lock mechanism B with a fixing member 2 interposed therebetween. The casing main body 1 will be described in detail. The chamber 4 provided with the locking portion 400 for accommodating the spring 3, the arc-shaped groove 5 into which the locking end 3 a of the spring 3 provided in the outer periphery of the chamber 4 is inserted, and the groove 5 surrounding the groove 5 It is composed of several guide pieces 6 of the spring 3 and flexible (one example) regulating means 7 (regulating means: elastic locking piece portion) extending from the guide pieces 6. The casing body 1 is made of resin, but uses metal, composite material, or the like. The regulating means 7 is constituted by a locking piece portion 8 provided on the casing body 1 that is slidably contacted (friction resistance) with the peripheral surface 300 of the spring 3. Use sliding contact. Reference numeral 9 denotes a load adjusting member (for adjusting the repulsive force of the spring 3 or adjusting the elastic force of the spring 3) screwed into the casing body 1 or its protruding cylinder 101 (example). The pressing force for the portion 8 is adjusted. For example, it is intended to adjust the load (repulsive force adjustment or elastic force adjustment) on the sheet A and / or the spring 3, or to correspond to the performance, repulsive force, size, or the like of the spring 3. By adjusting the load and the like, for example, the speed at the time of contraction and / or expansion of the spring 3 is controlled. Specifically, by suppressing the speed of the contraction and / or expansion, the impact of the sheet A on people, objects, etc. is mitigated. Moreover, the speed of standing up and / or folding is appropriately controlled. The other locking end 3 b of the spring 3 is locked to the locking portion 400. The casing body 1 is provided with an operating handle 10 and an operating rod 1000 that constitute operating means. By operating the operating handle 10, the operating rod 1000 is moved and the operating arm 1001 is movable. The lock mechanism B is unlocked. The spring 3 repels through this unlock, and the locking end 3a of the spring 3 makes a stop on this right side while moving from the left side toward the right side toward the groove 5 of the casing body 1, and further repels force. Accordingly, the seat back A2 rotates ( rotates clockwise). The seat A is sequentially folded by the rotation of the seat back A2 . In this example, the repulsive force of the spring 3 is suppressed by the sliding contact between the spring 3 and the locking piece 8 (regulating means 7), and the sheet A can be prevented from abruptly folding. The folding speed (or prone speed) and / or the standing speed of the sheet A is adjusted. By returning the seat A, the locking end 3a of the spring 3 is shifted from the right side to the left side toward the groove 5 of the casing body 1 and is stopped to the left side, and further compressed and seat back A2 Reversely rotates ( rotates counterclockwise). By reverse rotation of the seat back A2, the seats A are sequentially raised. At the time of standing, the compression force (repulsive force) is suppressed by the regulation by the sliding contact, and the sheet A can be prevented from abruptly standing and / or folding. Other features are as described above, and can be selected as appropriate. And the control means 7 is provided with flexibility, and when the spring 3 is contracted, it is positioned inward. In the figure, reference numeral 1 a denotes a casing lid, which is fitted to the casing body 1. Note that the casing lid 1a and the casing body 1 are securely or one-touch fitted using the engaging irregularities. In the figure, 11 is a seat belt, and 12 is a connecting pin for securing the operating arm 1001 and the operating rod 1000, respectively. The casing body 1 and / or the casing lid body 1a has a structure that can be used in a seat reclining device having a left and right load adjustment function, and each component and mechanism are configured in a confronting relationship in principle. Moreover, a casing is comprised by the casing main body 1 and the casing cover body 1a which were demonstrated above. The casing body 1, the casing lid 1a, etc. are merely examples, and although there is no limitation on the shape, or in order to facilitate the operation by the robot, a carrying hole, a locking piece, etc. It is also possible to provide.
[0028]
A second embodiment shown in FIGS. 8 to 10 will be described.
[0029]
This example is in accordance with the first embodiment. In this example, the locking piece portion 8 is attached to the casing body 1 by using the pin 800 and is detachable (can be attached). Through this attachment, the exchangeability of the locking piece 8 and / or the spring 3, etc., versatility, sharing of parts, etc. are achieved. In the figure, 801 indicates a weight. The weight 801 is useful for facilitating the return of the locking piece 8 and / or the spring 3 or the like, or acts on the strength of sliding contact.
[0030]
A third embodiment shown in FIGS. 11 to 13 will be described.
[0031]
This example is in accordance with the first embodiment. In this example, the base 802 of the locking piece 8 is structured to be freely attachable to the locking piece 102 of the casing body 1. Through this attachment, the exchangeability of the locking piece 8 and / or the spring 3, etc., versatility, sharing of parts, etc. are achieved. Others conform to the first and second embodiments described above.
[0032]
A fourth embodiment shown in FIGS. 14 to 17 will be described.
[0033]
This example is in accordance with the first embodiment. In this example, the spring 3 is held by the slider 14, and the slider 14 is fitted into a guide groove 1400 provided in the casing body 1 in the radial direction. It moves along, and the sliding contact of the spring 3 is aimed at, and it uses for the strength of sliding contact as needed. Desirably, an auxiliary spring 1401 is provided on one or both sides in order to facilitate the movement (retreat) of the slider 14. The slider 14 moves forward (moves in the axial direction) by the compression of the spring 3, and the slider 14 moves backward (moves in the radial direction) by expanding (opening) the spring 3. In the figure, reference numeral 1402 denotes a locking piece provided on the casing body 1 that guards the auxiliary spring 1401. In this example, there is an advantage that the spring 3 can be wound, rewound, or the function, movement, etc. of the restricting means 7 can be reliably controlled.
[0034]
A fifth embodiment shown in FIG. 19 will be described.
[0035]
This example is in accordance with the first embodiment. In this example, the restricting means 7 is constituted by a substantially uneven portion 301 (regulating means: substantially exhibiting a tooth shape) provided at a substantially central portion of the spring 3 and a locking piece portion 8. And the speed at the time of the shrinkage | contraction and / or expansion of the said spring 3 is controlled as a structure by which the latching piece part 8 is latched by the substantially uneven | corrugated | grooved part 301. FIG. Specifically, by suppressing the speed of the contraction and / or expansion, the impact of the sheet A on people, objects, etc. is mitigated. Moreover, the speed of standing up and / or folding is appropriately controlled. In addition, the place which provides the substantially uneven | corrugated | grooved part 301 is not limited, The operation | movement of the sheet | seat A is considered and specified. The substantially uneven portion 301 preferably has a structure in which flat portions 302 and 302 are provided at both ends so as not to disturb the function of the spring 3. The other locking end 3 b of the spring 3 is locked to the locking portion 400. Note that the substantially uneven piece 400 a of the engaging portion 400 is engaged with the substantially uneven portion 301, so that the spring 3 is surely restricted. Others are in accordance with the first embodiment described above.
[0036]
A sixth embodiment shown in FIG. 20 will be described.
[0037]
This example is in accordance with the second embodiment. In this example, the restricting means 7 includes a substantially uneven portion 301 provided at a substantially central portion of the spring 3 and a locking piece portion 8. And the speed at the time of the shrinkage | contraction and / or expansion of the said spring 3 is controlled as a structure by which the latching piece part 8 is latched by the substantially uneven | corrugated | grooved part 301. FIG. Specifically, by suppressing the speed of the contraction and / or expansion, the impact of the sheet A on people, objects, etc. is mitigated. Other configurations are in accordance with the second embodiment.
[0038]
A seventh embodiment shown in FIG. 21 will be described.
[0039]
This example is in accordance with the third embodiment. In this example, the restricting means 7 includes a substantially uneven portion 301 provided at a substantially central portion of the spring 3 and a locking piece portion 8. And the speed at the time of the shrinkage | contraction and / or expansion of the said spring 3 is controlled as a structure by which the latching piece part 8 is latched by the substantially uneven | corrugated | grooved part 301. FIG. Specifically, by suppressing the speed of the contraction and / or expansion, the impact of the sheet A on people, objects, etc. is mitigated. Other configurations are in accordance with the third embodiment.
[0040]
The eighth embodiment shown in FIGS. 22 to 23 will be described.
[0041]
This example is in accordance with the substantially fourth embodiment. In this example, the restricting means 7 is constituted by the slider 14 or the auxiliary spring 1401. The slider 14 grips and / or locks the spring 3 and moves along the guide groove 1400 to control the speed of contraction and / or expansion of the spring 3. Specifically, by suppressing the speed of the contraction and / or expansion, the impact of the sheet A on people, objects, etc. is mitigated. Other configurations are substantially the same as in the fourth embodiment. The slider 14 is provided with a substantially uneven piece 1403, and the substantially uneven piece 1403 is locked to the substantially uneven part 301. Through this engagement, the operation of the spring 3 such as movement, contraction and / or expansion is surely performed and reliable regulation is achieved.
[0042]
The ninth embodiment shown in FIG. 24 will be described.
[0043]
This example is substantially the same as the fourth embodiment. In this example, the restricting means 7 includes a locking piece portion 103 such as an uneven strip provided on the casing body 1 and the slider 14 or the auxiliary spring 1401. Then, the engagement between the substantially uneven portion 301 and the engagement piece portion 103 of the spring 3 and / or the slider 14 grips and / or engages the spring 3 and moves along the guide groove 1400, The speed at the time of contraction and / or expansion of the spring 3 is controlled. Specifically, by suppressing the speed of the contraction and / or expansion, the impact of the sheet A on people, objects, etc. is mitigated. Other configurations are substantially the same as those in the fourth embodiment. Although not shown, a substantially uneven piece (1403) is provided on the slider (14), and the substantially uneven piece (1403) is locked to the substantially uneven part (301). Through this locking, the operation of the spring 3 such as movement, contraction, and / or expansion may be reliably performed and a certain restriction may be achieved.
[0044]
In the figure, C denotes a rail, which is a configuration used when moving the tumble mechanism D, and is useful for indoor space use, convenience, and easy access.
[0045]
FIG. 25 shows each example of the spring 3. (A) is a flat shape, (B) is a shape having a locking portion (substantially uneven portion 301) on the top surface, and (C) is a locking portion on the side surface. (D) shows an example of a shape having locking portions on the upper surface and side surfaces. These are determined by the vehicle type, the size of the vehicle, the type, the structure of the seat, or the preference.
[0046]
The chart of FIG. 27 shows the form of the inner wall surface 1-1 of the casing body 1 and / or the inner wall surface 1a-1 of the casing lid 1a, the form of the spring 3, etc., the weight of the seat back, the timing of effectiveness, etc. A preferred example is shown in consideration. The use of the inner wall surface 1-1 of the casing main body 1 and the spring 3 due to the difference in shape, or the applicable vehicle type and the like are examined, and the configuration of the present invention is selected with reference to this content. As shown in FIG. 26, the 2-way system is a system that applies regulation to both the fall and return of the seat back, and the 1-way system is a system that applies regulation to the return direction of the seat back. Show. These methods are determined by, for example, the vehicle type, the size of the vehicle, the type, the structure of the seat, or the preference.
[0047]
【The invention's effect】
According to the first aspect of the present invention, there is provided a lock mechanism that controls locking and unlocking of the reclining mechanism, a casing fixed to the locking mechanism, a spring that engages both ends of the casing, and movement of a locking end of the spring provided in the casing. A seat reclining device having a load adjusting function provided with an operating groove provided on a casing for operating a spring, a regulating means for the spring , and an adjusting means for adjusting the load on the regulating means. The adjusting means is constituted by a screw hole provided in the casing and a screw provided in the screw hole, and the regulating means is a locking portion of a number of substantially uneven portions provided in the spring, and the periphery of the spring. A seat reclining device having a load adjusting function, characterized by comprising a flexible slider provided on a casing in sliding contact with a surface. Therefore, by improving the casing and the spring, it is possible to eliminate various impacts by restricting the spring and gently folding the seat and / or standing, moving, etc., or based on the impact described above. It is possible to eliminate the harmful effects, use the simple structure constituted by this improvement, achieve easy assembly, speeding up, etc., and facilitate the spring processing, speeding up, etc. There are features. In particular, the invention of claim 1 adjusts (fine-adjusts) the load of the spring to avoid the spring's loosening (unstable tension and / or relaxation), and achieves generalization, convenience, etc. It is intended that a reliable movement of the seat and a smooth movement as described above can be ensured, or that versatility can be improved and the number of parts can be reduced through the use of a spring for a compatible model . In addition, there are practical benefits such as simplification of the structure of the regulation means, cost reduction, and ease of management and production .
[0048]
[0049]
[0050]
[0051]
The invention according to claim 2 is provided with a load adjustment function in which when the casing according to claim 1 is secured to the lock mechanism, a hook piece of the casing body of the casing is connected to the leg of the lock mechanism. The seat reclining device. Therefore, there are features such as simplification of the structure of the regulating means, cost reduction, simplification of management and production, and achievement of the object of the first aspect.
[0052]
[0053]
[0054]
According to a third aspect of the present invention, there is provided a seat reclining device having a load adjusting function in which the slider according to the first aspect is regulated by an auxiliary spring. Therefore, by reliably return spring according to claim 1, that act blindly avoidance of the spring can be reduced, also can achieve the purpose of claim 1, it is characterized the like.
[0055]
The invention of claim 4 is the seat reclining apparatus the engagement portion of the substantially concave-convex portion, provided with a load adjustment function has a configuration provided on one surface of the spring many provided in the spring according to claim 1 . Therefore, there are features such as ensuring the function of the spring and achieving the object of the first aspect.
[Brief description of the drawings]
FIG. 1 is a schematic scale diagram of an embodiment in which the present invention is adopted in a seat reclining device. FIG. 2 is a scale schematic diagram of an embodiment in which the present invention is adopted in a seat tumble mechanism. (B) and (C) show each folded state.
FIGS. 3A and 3B are schematic views of an embodiment in which the examples of FIGS. 1 and 2 are combined. FIG. 3A shows a standing state, and FIGS. 3B and 3C show folded states.
4 is a front view of the casing body of the first embodiment. FIG. 5 is a rear view of the casing body of the first embodiment. FIG. 6 is a cross-sectional view of the casing body fitted to the casing body of the first embodiment. 7A is a diagram showing an initial connection state between the hook piece of the casing body and the leg of the lock mechanism, and FIG. 7B is a view showing a connection state of the hook piece of the casing body and the leg of the lock mechanism. 8 is a front view of the casing body of the second embodiment. FIG. 9 is a rear view of the casing body of the second embodiment. FIG. 10 is a cross-sectional view of the casing body fitted to the casing body of the second embodiment. 11] Front view of the casing body of the third embodiment [FIG. 12] Rear view of the casing body of the third embodiment [FIG. 13] Cross-sectional view of the casing body of the third embodiment fitted with a casing lid [FIG. ] Front view of the casing body of the fourth embodiment [ 15] Back view of the casing body of the fourth embodiment. [FIG. 16] Cross-sectional view of the casing body of the fourth embodiment fitted with the casing lid. [FIG. 17] FIG. FIG. 19 is a front view of the guide groove provided in the casing body, and FIG. 19B is a cross-sectional view. FIG. 19 is a rear view of a partially broken casing body of the fifth embodiment. FIG. 21 is a rear view of a partially cutout casing body of the seventh embodiment. FIG. 22 is a rear view of a partially cutout casing body of the eighth embodiment. FIG. 23 is an enlarged schematic view of the main part of FIG. 22. FIG. 24 is a rear view of the casing body of the ninth embodiment. FIG. 25 is an example of a spring. ) Is a shape having a locking part, (c) is a shape having a locking part on one side (side surface), (d) FIG. 26 is a perspective view showing an example of a shape having a locking portion on two surfaces (upper surface and side surface). FIG. 26 is a diagram for explaining the relationship between a seat and a seat back or a load. Chart explaining relationship with load [Explanation of symbols]
A Seat A1 Seat cushion A2 Seat back B Lock mechanism B1 Main body C Rail D Tumble mechanism 1 Casing main body 1-1 Inner wall surface 100 Annular rod 101 Protruding cylinder 102 Mounting portion 103 Locking piece portion 1a Casing lid body 1a-1 Inner wall surface 2 Fixing member 3 Spring 3a Locking end 3b Locking end 300 Peripheral surface 301 Substantially uneven part 302 Flat part 4 Room 400 Locking part 400a Substantially uneven part 5 Groove 6 Guide piece 7 Control means 8 Locking piece part 800 Pin 801 Weight 802 Base 9 Load adjustment member 10 Operation handle 1000 Operation rod 1001 Operation arm 11 Seat belt 12 Connection pin 14 Slider 1400 Guide groove 1401 Auxiliary spring 1402 Locking piece 1403 Substantially uneven piece

Claims (4)

A locking mechanism for controlling locking and unlocking of the reclining mechanism, a casing fixed to the locking mechanism, a spring locked at both ends of the casing, and a groove for moving the locking end of the spring provided in the casing; A seat reclining device having a load adjusting function provided with an operating means provided on the casing for operating the spring, a regulating means for the spring , and an adjusting means for adjusting a load on the regulating means. ,
The adjusting means includes a screw hole provided in the casing and a screw provided in the screw hole, and the restricting means includes a plurality of substantially concave and convex engaging portions provided on the spring, A seat reclining device having a load adjusting function, characterized by comprising a flexible slider provided in the casing in sliding contact with a peripheral surface of a spring . A seat reclining device provided with a load adjusting function configured to connect a leg of the lock mechanism to a hook piece of a casing body of the casing when the casing according to claim 1 is secured to the lock mechanism . A seat reclining device having a load adjustment function in which the slider according to claim 1 is configured to be regulated by an auxiliary spring . A seat reclining device having a load adjustment function in which a plurality of substantially uneven portions provided on the spring according to claim 1 are provided on one surface of the spring .

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