JP2004016480A - Seat reclining device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To dissolve impacts generated when folding a conventional seat reclining device which depends mainly on the repulsive force of a leaf spring. <P>SOLUTION: A seat reclining device comprises: the lock mechanism of a reclining mechanism; a casing fixed to the lock mechanism; a spring whose both ends are fixed to the casing; a groove for accepting the movement of the locked end of the spring provided to the casing; an operation means provided to the casing for operating the spring; and a control means for controlling the spring. Thus, by the improvement of the casing and the spring, the spring is controlled, folding of a seat or the like is gently performed and various kinds of the impacts are eliminated. Also, conventional adverse effects due to the impacts are dissolved. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle seat reclining device (including a seat tumbling mechanism).
[0002]
[Prior art]
In the conventional seat reclining device, a plate spring is mounted on an operating shaft penetrating the lock mechanism and the case sink, and the plate flange is locked to the case sink and the operation shaft. The operation shaft is operated (rotated). And the lock mechanism is locked and unlocked, and the plate flange is tensioned and relaxed (tension release). In this configuration, the folding of the reclining sheet (referred to as a sheet) is a structure that depends exclusively on the repulsive force of the plate frame. Therefore, the impact at the time of folding may sometimes cause an unexpected trouble. One example will be described. (1) describes a problem caused by impact. In other words, the shock may cause injuries and fears to the weak, such as infants, elderly people, sick people, etc., or the hard member provided on the seat may cause damage to the weak, and may be easily damaged such as mechanical parts. It has been pointed out that it causes damage. (2) has a problem in achieving various modes of the sheet. That is, when it is desired to fold and / or stand up quickly (standing at an appropriate angle of inclination), and to fold and / or stand up the seat with speed and speed changes, and to ensure this operation. It has been pointed out that it is not possible to respond accurately to what to do.
[0003]
As a part of the solution, conventionally, there is a mechanism in which a secondary means such as a torsion vane or an impact absorbing member is provided as a means for complementing the sprinkle. However, with this mechanism, a buffering effect can be expected to some extent, but problems such as insufficiency and a complicated structure can be considered. In addition, as a part of the solution, prior documents are listed. This document (1) is a reclining device disclosed in Japanese Patent Application Laid-Open No. 1-107708. The present invention intends to slow the return rotation of the seat back by the return sprinkle by restricting the movement of the rotating side member through the viscous grease. Document (2) is a reclining device disclosed in Japanese Patent Laid-Open No. 9-252868. In the present invention, a friction spring that generates a frictional force by returning the seat back by the return sprinkle is disposed in the drum cover of the return sprinkle. When the seat back is returned to the front from the backward tilt position, It is intended to alleviate the seatback return speed. Reference (3) has a reclining device of Japanese Utility Model Laid-Open No. 6-70642. The present invention includes a first spiral link that biases the seat back forward from a rearward tilt position to a forward tilt position, and a second spiral that biases the seatback rearward from a forward tilt position to a neutral position. By providing a sprinkle and configuring the second spiral link to be weaker than the biasing force of the first spiral link, it is intended to reduce the impact by changing the rotation speed of the seat back.
[0004]
[Problems to be solved by the invention]
In the invention of the above-mentioned document (1), the configuration uses a viscous grease. Therefore, it is necessary to remodel the case sink into a sealed type, which has a special structure, and there are problems that require labor and experience in its production and assembly, etc., or problems with the durability of the viscous grease. it is conceivable that. Further, the inventions and devices of Documents (2) and (3) have a configuration in which a sprinkle that restricts the movement of the return sprinkle is provided. Therefore, the structure is considerably complicated, the adjustment of the repulsive force between the return sprinkle and the sprinkle is delicate, and careful assembly and abundant experience are required to ensure a reliable movement, or When assembling the device, there are problems such as requiring experience and labor. Further, structurally, there may be a problem such as leaving a problem in the smooth movement of the seat or causing an increase in cost.
[0005]
[Means for Solving the Problems]
In the invention of claim 1, by improving the case sync and the sprinkle, the sprinkle is regulated and the sheet is folded and / or raised, moved, etc. gently to eliminate various impacts, or against this impact. Based on this, the above-mentioned problems can be solved, or the simple structure constructed by this improvement can be used to facilitate and speed up the assembly, and to facilitate and speed up the processing of the spring. Intended to plan. In addition, it is intended to prevent the flirting of the slink (unstable tension and / or relaxation) and to ensure the reliable movement of the seat and the smooth movement as described above.
[0006]
The first aspect of the present invention includes a lock mechanism that controls locking and unlocking of the reclining mechanism, a case sink secured to the lock mechanism, a sprinkle that engages both ends of the case sink, and a stop end of the sprinkle provided in the case sink. A seat reclining device comprising a movement groove, an operating means provided in the casing for operating the sprinkle, and a restricting means for restricting the sprinkle.
[0007]
The invention of claim 2 is intended to avoid sprinkling and to achieve the object of claim 1.
[0008]
Claim 2 is a seat reclining device in which the restricting means for restricting the sprinkle according to claim 1 is constituted by a locking portion of a substantially uneven portion provided on the sprinkle and a locking piece portion provided on the case ring. It is.
[0009]
The invention of claim 3 is intended to avoid sprinkling and to achieve the object of claim 1.
[0010]
A third aspect of the present invention provides a restricting means for restricting the sprinkle according to claim 1, a locking portion of a substantially uneven portion provided on the sprinkle, a slider for restricting the sprinkle, and a locking piece portion provided on the case sink It is a seat reclining device constituted by.
[0011]
The invention of claim 4 intends to avoid the spill of the sprinkle by reliably returning the sprinkle of claim 3 and to achieve the object of claim 1.
[0012]
According to a fourth aspect of the present invention, there is provided a seat reclining device configured to restrict the slider according to the third aspect with an auxiliary fllink.
[0013]
The invention of claim 5 is intended to facilitate the handling of the locking piece portion that regulates the sprinkle or to improve versatility, and to achieve the object of claim 1.
[0014]
A fifth aspect of the present invention is a seat reclining device in which the locking piece according to the second aspect is configured to be detachable.
[0015]
The invention of claim 6 is intended to secure the function of the sprinkle and achieve the object of claim 1.
[0016]
According to a sixth aspect of the present invention, there is provided a seat reclining device in which the engaging portion of the substantially uneven portion provided in the sprinkle according to the second and third aspects is configured as a part of the sprinkle.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0018]
FIG. 1 is a schematic diagram of an embodiment in which the present invention is employed in a seat reclining device, and FIG. 2 is a schematic diagram of an embodiment in which the present invention is employed in a sheet tumbling mechanism. (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, and (B) and (C) show the folded states. 4 to 6 show an embodiment described in claim 2. FIG. 4 is a front view of the case body, FIG. 5 is a rear view of the case body, and FIG. 6 is a case cover fitted to the case body. FIGS. 7 to 9 show an embodiment according to claims 3 and 4, FIG. 7 is a front view of the case body, FIG. 5 is a rear view of the case body, and FIG. 8 is a case body. FIG. 10 to FIG. 12 show an embodiment according to claim 5, FIG. 10 is a front view of the case sink main body, FIG. 11 is a rear view of the case sink main body, FIG. 12 is a cross-sectional view in which a case sink main body is fitted with a case sink lid, and FIGS. 13 to 15 show another example of the embodiment described in claim 2. FIG. 13 is a front view of the case sink main body, FIG. Is the main body Rear view, FIG. 15 is a sectional view taken fitted Keshinku Bu lid to Keshinku Bu body. In addition, the structure of Claim 1, 6 is the concept of this invention, and is shown by each figure.
[0019]
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.
[0020]
An embodiment according to claim 2 shown in FIGS. 4 to 6 will be described.
[0021]
Reference numeral 1 denotes a case body 1 having an annular rod 100 fixed to a body B1 constituting the lock mechanism B with a fixing member 2 interposed therebetween. The case body 1 will be described in detail. The chamber 4 having the locking portion 400 for accommodating the sprinkle 3, the arc-shaped groove 5 into which the locking end 3 a of the sprinkle 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 sprinkle 3 and flexible (one example) restricting means 7 (regulating means: elastic locking piece portion) extending from the guide piece 6. The case body 1 is made of resin, but uses metal, composite material, or the like. The restricting means 7 is configured to be latched by a substantially uneven portion 300 (regulating means: generally having a tooth shape) provided at a substantially central portion of the sprinkle 3, and the speed when the sprinkle 3 is contracted and / or expanded. Control. Specifically, by suppressing the shrinkage and / or expansion speed, the impact of the seat A on people, objects, etc. is mitigated. In addition, the standing and / or folding speed is appropriately controlled. In addition, the place which provides the substantially uneven | corrugated | grooved part 300 is not limited, It considers and considers the operation | movement of the sheet | seat A. FIG. And this rough uneven | corrugated | grooved part 300 desirably has the structure which provides the flat parts 301 and 301 in both ends, and does not inhibit the function of the sprinkle 3. The other locking end 3 b of the sprinkle 3 is locked to the locking portion 400. The case body 1 is provided with an operation handle 8 and an operation rod 80 that constitute the operation means. By operating the operation handle 8, the operation rod 80 is moved and the operation arm 81 is movable. The case body 1 rotates and unlocks the lock mechanism B. The sprinkle 3 repels through this unlocking, and the locking end 3a of the sprinkle 3 is moved from the left side toward the right side toward the groove 5 of the case body 1, and then rebounds. The case body 1 and the lock mechanism B rotate (rotate clockwise) via the. By the rotation of the case body 1 and the lock mechanism B, the sheets A are sequentially folded. In this example, the repulsive force of the sprinkle 3 is suppressed by the movement of the substantially uneven portion 300 by the return of the sprinkle 3 and the restriction of the substantially uneven portion 300 and the restricting means 7, and the sheet A is rapidly folded. Can be avoided. Note that the adjustment of the folding speed (or prone speed) and / or the standing speed of the sheet A and the position of the sheet A to be adjusted are substantially related to the uneven portion 300 and the regulating means 7, and the repulsion of the sprinkling "3". This can be done freely by changing the force and the positional relationship between the two. When the seat A is returned, the locking end 3a of the sprinkle 3 shifts from the right side to the left side toward the groove 5 of the casing 1 and stops at the left side. Then, the lock mechanism B rotates backward (rotates counterclockwise). By reverse rotation of the case sink main body 1 and the lock mechanism B, the sheets A are sequentially raised. At the time of standing, the compression force (repulsive force) is suppressed by the restriction of the substantially uneven portion 300 of the sprinkle 3 and the restricting means 7, and the sudden standing and / or folding of the sheet A can be avoided. Other features are as described above, and can be selected as appropriate. The restricting means 7 is flexible and is located inward when the sprinkle 3 is contracted. In the figure, reference numeral 1 a denotes a case sink cover body, and this case sink cover body 1 a is fitted to the case sink main body 1. The case sink lid 1a and the case sink main body 1 are securely or one-touch fitted using the engagement irregularities. In the figure, 9 is a seat belt, and 10 is a connecting hinge for securing the operating arm 81 and the operating rod 80. The case sink main body 1 and / or the case sink lid 1a can be used for the left and right seat reclining devices, and the components and mechanisms are, as a general rule, configured in an opposing relationship. In addition, the case sync main body 1 and the case sync lid 1a constitute a case sync. The case sink main body 1, case sink lid 1a, etc. are only examples, and there are no limitations on the shape, or in order to facilitate the operation by the robot, although not shown, a hole for carrying, a locking piece, etc. It is also possible to provide.
[0022]
Embodiments according to claims 3 and 4 shown in FIGS. 7 to 9 will be described.
[0023]
Hereinafter, the same parts and mechanisms are not described, and the same reference numerals are used. Further, the relationship between the restricting means 7 and the substantially uneven portion 300 of the slink 3 conforms to the above example. In this example, 70 is a slider provided on one side of the sprinkle 3, and this slider 70 is fitted in a guide groove 401 provided in the radial direction of the case body 1, and along this guide groove 401. It is a structure which moves and ensures regulation of the substantially uneven portion 300 of the slink 3 and the regulating means 7. Further, in this example, an auxiliary spring 70a is provided on one or both sides in order to facilitate the movement (retreat) of the slider 70. The slider 70 moves forward (moves in the axial direction) due to the compression of the sprinkle 3, and the slider 70 moves backward (moves in the radial direction) when the sprinkle 3 is expanded (opened). In the figure, reference numeral 70b denotes a locking piece provided on the case body 1 for gating the auxiliary slink 70a.
[0024]
Another example of the embodiment described in claim 2 shown in FIGS.
[0025]
In this example, the restricting means 7 (the restricting means: the hard locking piece portion) is configured to be movable via the pivot wing 71 so as to be surely locked to the substantially uneven portion 300. This is a mechanism that reliably returns using the auxiliary sprinkle 71a. In addition, it is desirable to form the locking unevenness 7a in the restricting means 7 to ensure the locking relationship with the substantially uneven portion 300. The pivot support 71 is supported by the locking piece 402 of the casing body 1. In the figure, 71b represents a weight. In this example, the restricting means 7 is locked to the locking unevenness 7 a via the repulsive force of the auxiliary sprinkle 71 a and the pivot support wing 71. In the drawing, reference numeral 71c denotes a protrusion for locking and / or preventing removal of the auxiliary sprinkle 71a, and reference numeral 403 denotes a cylindrical portion for locking and / or preventing removal of the auxiliary sprinkle 71a.
[0026]
An embodiment according to claim 5 shown in FIGS. 13 to 15 will be described.
[0027]
In this example, the restricting means 7 (the restricting means: elastic / hard locking piece) is detachably provided on the fixing portion 72 provided in the case body 1, and the auxiliary sprinkle 71a, the cylindrical portion 403, etc. Similar to FIGS. In this example, the mounting surface 71d of the restricting means 7 serves as a restricting guide for the sprinkle 3 (the same applies to other examples). Other configurations and mechanisms are the same as those described above. Also, in this example, the replacement of the regulating means 7 is useful for dealing with damage, adjusting shock mitigation (elasticity, etc.), compatibility with the sprinkle 3 (the same applies to other examples).
[0028]
C in the figure indicates a rail, which is used when moving the tumbling mechanism D, and is useful for indoor space use, convenience, and easy access.
[0029]
16 and 17 show the process of reaching the folded state X3 from the prone state X1 of the sheet A through the intermediate state X2 (arbitrary position or desired position, etc.), the angle θ in this process, and the repulsion of the sprinkle 3. FIG. 16 is a schematic diagram for explaining an example of the relationship with the force F, FIG. 16 shows the movement state of the sheet A, and FIG. 17 shows the state in which the sprinkle 3 acts as a chart. The moving state of the sheet A or the state in which the sprinkle 3 acts is a preferred example and does not restrict the present invention. As in this example, the process from X1 to X2 starts with the very gentle repulsive force (method by regulation) of the slink 3 and the process of smoothly and rapidly folding using the repulsive force of the slink 3 from X2. It is considered ideal but not limited.
[0030]
【The invention's effect】
The invention of claim 1 includes a lock mechanism that controls locking and unlocking of the reclining mechanism, a case sink secured to the lock mechanism, a sprinkle that engages both ends of the case sync, and a movement of the stop end of the sprinkle provided in the case sync. The seat reclining device is provided with an operation groove provided on the casing for operating the sprinkle, and a restricting means for restricting the sprinkle. Therefore, by improving the case sync and the sprinkle, the sprinkle is regulated to allow the sheet to be folded and / or raised gently, to eliminate various impacts, or to eliminate the above-mentioned adverse effects based on this impact. There are features such as being able to achieve, or using a simple structure constituted by this improvement, facilitating and speeding up the assembly, and facilitating and speeding up the processing of the sprinkles. . In addition, there is an advantage that a reliable movement of the seat and the smooth movement as described above can be ensured by avoiding the swaying (unstable tension and / or relaxation) of the slink.
[0031]
According to a second aspect of the present invention, there is provided a seat reclining device in which the restricting means for restricting the sprinkle according to the first aspect is constituted by a locking portion of a substantially uneven portion provided on the sprinkle and a locking piece portion provided on the case ring. is there. Therefore, there is a feature that it is possible to avoid flirting of the sprinkle and to achieve the object of claim 1.
[0032]
According to a third aspect of the present invention, there is provided the restricting means for restricting the sprinkle according to the first aspect, the engaging portion of the substantially uneven portion provided on the sprinkle, the slider for restricting the sprinkle, and the engaging piece portion provided on the case sink It is a seat reclining device constituted by Therefore, there is a feature that it is possible to avoid flirting of the sprinkle and to achieve the object of claim 1.
[0033]
According to a fourth aspect of the present invention, there is provided a seat reclining device configured to restrict the slider according to the third aspect with an auxiliary fllink. Therefore, by reliably returning the sprinkle according to the third aspect, it is possible to avoid the reluctance of the sprinkle and to achieve the object of the first aspect.
[0034]
A fifth aspect of the present invention is a seat reclining device in which the locking piece according to the second aspect is configured to be detachable. Therefore, it is possible to facilitate the handling of the locking piece portion for regulating the sprinkle or to improve the versatility, and to achieve the object of the first aspect.
[0035]
The invention of claim 6 is a seat reclining device in which the engaging portion of the substantially uneven portion provided in the sprinkle according to claim 2 or claim 3 is formed as a part of the sprinkle. Therefore, there is a feature that the function of the sprinkle can be secured and the object of the first aspect can be achieved.
[Brief description of the drawings]
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 sheet tumbling 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, where FIG. 3A shows a standing state, and FIGS. 3B and 3C show folded states.
4 is a front view of the main body of the case sink showing the embodiment according to claim 2. FIG. 5 is a rear view of FIG. 4. FIG. 6 is a cross-sectional view of the case sink main body of FIG. 7 is a front view of the case sink main body showing the embodiment according to claims 3 and 4. FIG. 8 is a rear view of FIG. 7. FIG. 9 is a sectional view of the case sink main body shown in FIG. 10 is a front view of the main body of the case sink showing the embodiment described in claim 5. FIG. 11 is a rear view of FIG. 10. FIG. FIG. 14 is a front view of the case sink main body showing another example of the embodiment of the present invention. FIG. 15 is a sectional view of the case sink main body of FIG. 16 Fold the sheet from the prone state through the intermediate state Schematic diagram illustrating the angle of the seat of the schematic diagram FIG. 17 FIG. 16 showing the leading state process, an example of the relationship between the staple ° link ゛No repulsive force [Description of symbols]
A Seat A1 Seat cushion A2 Seat back B Lock mechanism B1 Main body C Rail D Tumble mechanism 1 Case sink main body 1a Case sink lid 100 Annulus 2 Fixing member 3 Sprinkle 3a Lock end 3b Lock end 300 Substantially uneven portion 301 Flat portion 4 Room 400 Locking portion 401 Guide groove 402 Locking piece 403 Tube portion 5 Groove 6 Guide piece 7 Restricting means 7a Locking unevenness 70 Slider 70a Auxiliary link 70b Locking piece 70 Slider 71 Pivoting hinge 71a Auxiliary swing link 71b Weight 71c Projection 71d Surface 8 Operation handle 80 Operation rod 81 Operation arm 9 Seat belt 10 Connection hinge

Claims (6)

A locking mechanism that controls locking and unlocking of the reclining mechanism, a case sync secured to the lock mechanism, a sprinkle that is locked at both ends of the case sync, and a groove for moving the locking end of the sprinkle provided in the case sync. A seat reclining device comprising operating means provided in the case for operating the sprinkle and restricting means for restricting the sprinkle. 2. A seat reclining device comprising: a restricting means for restricting the sprinkle according to claim 1; and a locking portion of a substantially uneven portion provided on the spring and a locking piece provided on the casing. The restricting means for restricting the sprinkle according to claim 1 comprises a locking portion of a substantially uneven portion provided on the sprinkle, a slider for restricting the sprinkle, and a locking piece provided on the case sink. Seat reclining device. A seat reclining device configured to regulate the slider according to claim 3 with an auxiliary fllink. A seat reclining device in which the locking piece according to claim 2 is configured to be detachable. 4. A seat reclining device in which the engaging portion of the substantially uneven portion provided in the sprinkle according to claim 2 or 3 is formed as a part of the sprinkle.

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