JP5665435B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat.

2. Description of the Related Art Conventionally, a configuration in which an armrest is attached to a dorsal seat so as to be rotatable about an attachment shaft between an upright retracted posture and a use posture located above the upper surface of the seat is known (Patent Document 1). .
The known example is a retracted posture in which the armrest is raised by guiding the rotation of the armrest by the engagement pin and the guide groove, and when the forward load is applied, the engagement body is engaged with the engagement pin against the spring elasticity. Hold on.

Japanese Patent Laid-Open No. 08-228886

Since the known example is a configuration in which a predetermined load or more is applied in the retracted state and the engaging body is engaged and locked to the engaging pin, the engaging body and a member such as a spring are necessary, and the structure is complicated. There is a problem that assembly and installation are troublesome.
In addition, since the engaging body is engaged and locked only when a predetermined load or more (inertia) is applied in the retracted state, there is a problem that it cannot be held in the normally retracted position.
In addition, since the known example is configured to engage the engaging body with the engaging pin that is moving due to the forward load, the movement starts only when a predetermined load is applied to the engaging pin that starts moving from the beginning of load generation. There is a problem that the movement of the engaging body is delayed and the certainty of holding the storage position is low.
In the present application, the configuration for holding the armrest 4 is devised to reduce the number of parts and facilitate assembly and attachment.

The invention according to claim 1, fitted with armless bets, between the use position located at a predetermined height above the top surface of the upright stored position and the seat sheet, to rotatably backrest sheet around the mounting shaft , between the armrest frame and the back凭frame mounting bracket of the armless bets, the holding Organization for holding the armless bets in the storage position is provided, the holding Organization is predetermined portion of the mounting bracket more constitutes the contact support member for moving the armless DOO are both in contact with, between said mounting bracket of the said armrest frame backrest frame, a guide pin provided on the armrest frame, said guide pin A guide mechanism configured to guide the movement of the armrest formed by a guide groove provided in the mounting bracket, and the guide groove is centered on the mounting shaft. The contact support member has a contact support portion that contacts a predetermined portion of the vertical plate portion of the mounting bracket, and the contact support portion corresponds to a tip side abutment provided on the guide pin side. It is divided into a contact support part and a base side contact support part provided on the mounting shaft side, and the tip side contact support part is provided radially outside the guide groove center with respect to the mounting shaft center. it relates to a vehicle seat according to claim.
According to another aspect of the invention, the pre-Symbol abutment support member are configured to have an insertion hole for mounting the inserted before Symbol Gaidopi down, the contact support portion is formed around the insertion hole those of the vehicle seat.
A third aspect of the present invention, the contact supporting member is formed by a plate-like member having a predetermined length, attaching the Gaidopi on to one end of the abutting support member, the other end of the abutting support member The present invention relates to a vehicle seat that is rotatably attached to an attachment shaft .
The invention of claim 4, wherein the contact supporting member is formed by a plate-like member having a predetermined length, provided with the insertion hole for mounting said Gaidopi on to the tip of the contact supporting member, the abutment support a mounting hole for mounting said mounting shaft to the base parts material provided, but according to the vehicle seat, wherein is provided the contact supporting portion in abutment support member between the insertion hole and the mounting hole.
The invention of claim 5, wherein the contact supporting member, said inner and outer pair attached to the attachment bracket relative to the vertical plate portion of the bets, the contact supporting portion abutting before Kitateban part each abutting support members Each of the contact support portions is related to a vehicle seat configured to sandwich the vertical plate portion from the inside and outside directions.
The invention of claim 6, wherein the flange-like receiving portion provided in the Gaidopi down the inside of the mounting bracket, the mounting screw hole formed in the Gaidopi down, of the mounting bracket into the screw hole for with said mounting are screwed bolts from outside, a structure in which the outer peripheral portion or the Gaidopi down of the bolt moves within the guide groove, on the outer circumference or periphery of the Gaidopi down of the bolt outside of the mounting bracket is wherein those of the contact supporting member to a vehicle seat provided with a spring means for pressing the vertical plate portion of the mounting bracket.
The invention of claim 7, wherein the contact support member, said inner and outer pair attached to the attachment bracket relative to the vertical plate portion of the bets, the tubular portion projecting outward in the mounting hole of the inner side of the contact supporting member formed, on the outer periphery of the tubular portion to form a first engagement portion, the sheet for the outer of the vehicle in which the first engagement portion in the contact supporting member is provided with a second engaging portion which engages It is related to.
The invention of claim 8, wherein the armrest frame provided with the retaining Organization to the left or right one side of arm, the Gaidopi down into the guide groove and the mounting hole of the mounting bracket on the side not provided with the holding Organization in a state in which the mounting shaft Contact and were each inserted to be positioned at a predetermined position, an end portion of the Gaidopi down Contact and the mounting shaft on the side provided with the holding Organization is, a predetermined position of the inner side of the mounting bracket set so as to be positioned, the screw holes are provided respectively at the ends of the Gaidopi down Contact and the mounting axis of the holding device providing a structure side, the Gaidopi emissions Contact and the mounting on the side of providing the holding Organization those of said mounting bracket of the movable engagement from the outer locking member Contact and fixed side locking member engaged respectively threaded into a vehicle seat which is mounted on the respective ends of the shaft.
According to a ninth aspect of the present invention, the armrest is attached to the dorsal seat so as to be rotatable about an attachment shaft between the standing storage posture and a use posture located at a predetermined height above the upper surface of the seat. A holding mechanism for holding the armrest in a retracted posture is provided between the armrest frame of the back frame and the mounting bracket of the dorsal frame, and the holding mechanism abuts against a predetermined portion of the mounting bracket and moves together with the armrest. constituted by the supporting member, between the mounting brackets of the seat back frame and the arm rest frame, and Gaidopi emissions provided on the armrest frame, provided on the mounting bracket to the Gaidopi down moves the guide Organization for guiding movement of the armless bets constituted by a guide groove provided, the contact supporting member is in the Gaidopi down A moving contact supporting member digits, divided construction in the fixed and the contact supporting member provided on the mounting shaft, on either one or both of the fixed contact support member and the moving contact supporting member, wherein those relating to a vehicle seat provided with a contact supporting portion contacting a predetermined portion of the vertical plate portion of the mounting bracket.

In the present invention, the contact supporting member of the holding Organization comes into contact with the predetermined portion of the mounting bracket to hold the armless bets in the stored position, allowing for a simpler to a holding structure of the stored position of the armless bets, the manufacturing assembly It can be done easily and inexpensively.
In the present invention, since the mounting of the contact supporting member to Gaidopi down, the contact support member can simple configure together constitute moving the armless bets can manufacturing assembled easily, can be provided at low cost.
In the present invention, the contacting causing the contact support portion of the support member abuts the vertical plate portion, the contact support member can simple configure together constitute moving the armless bets, can the manufacturing assembly easier, Can be provided at low cost.
In the present invention, the contact support member includes at least may be provided abutting support portion around the insertion hole for mounting inserting the Gaidopi down, and simplified configuration, it is possible to provide a low cost retention Organization .
In the present invention, the contact support member includes a moving contact support member which is provided on Gaidopi down, since the fixing and contact supporting member provided on the mounting shaft is divided configuration, simplified configuration, it is possible to provide a low cost retention Organization.
In the present invention, since the contact support member is formed by a plate-like member having a predetermined length, it can be attached to Gaidopi down and mounting shaft, simplify the configuration for the contact supporting member both move armless bets Therefore, manufacturing and assembly can be facilitated and provided at low cost.
In the present invention, since the contact support portion between the insertion hole and the mounting hole of the abutting support member is provided, the contact supporting member can simplify the structure the structure to move together with the armless bets, the manufacturing assembly It can be done easily and inexpensively.
In the present invention, since the basis of the vertical plate portion of the mounting bracket is provided with a pair of inner and outer abutment support member, it can increase the contact area between the vertical plate portion of the contact support portion and the mounting bracket, moreover since sandwiching a more vertical plate portion of the mounting bracket to the abutment support portions of the pair of abutting support member, and possible to increase the contact resistance with the contact support portion, firmly the armless bets on stored position Can hold.
In the present invention, since there is provided a spring means for pressing the contact supporting member to the vertical plate portion, to adjust the intensity of the contact resistance due to the contact support member, ideal to the contact resistance, armless bets posture It is possible to realize both the reduction of the operation force against the change and the maintenance of the retracted posture.
In the present invention, the clamping state of the vertical plate portion by contacting the support member to hold temporarily fixed, can the assembly extremely easily.
In the present invention, even when the armless preparative mounting space is small, easy mounting is possible, it is possible to improve the degree of freedom in installation location selection.

The perspective view of a vehicle seat. The perspective view of an armrest frame. The perspective view of the part of a guide mechanism and a holding mechanism. The perspective view of the guide mechanism by the side which does not provide a holding mechanism. Sectional drawing of the part of a guide mechanism and a holding mechanism. The perspective view of the other Example of a guide mechanism and a holding mechanism. The enlarged view. FIG. The perspective view of the other Example of a guide mechanism and a holding mechanism. The enlarged view. FIG. The perspective view of the other Example of a guide mechanism and a holding mechanism. The enlarged view. FIG. The perspective view of the other Example of a guide mechanism and a holding mechanism. The enlarged view. FIG. The perspective view of the other Example of a guide mechanism and a holding mechanism. The enlarged view. The perspective view of an abutting support member. FIG. FIG. Sectional drawing of the other Example of a guide mechanism and a holding mechanism. The enlarged view. The perspective view of the guide mechanism by the side which does not provide a holding mechanism. FIG.

An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a vehicle seat, 2 a seat seat, 3 a back seat provided on the seat seat 2 so that the inclination angle can be adjusted, and 4 a back seat. Armrest.
The armrest 4 is pivotally attached to the center of the attachment shaft 11 between a retracted posture stored in the recess 10 provided in the back seat 3 and a use posture located above the upper surface of the seat 2 (FIG. 1).
The armrest 4 rotatably mounts an armrest frame 12 having an arbitrary shape on a mounting bracket 15 provided on a back frame 13 of the back sheet 3 by the mounting shaft 11 in the left-right direction (for easy understanding). Therefore, the directions such as left and right are shown and described, but the configuration is not limited by this).

A guide mechanism 16 is provided between the armrest frame 12 and the mounting bracket 15 to guide the rotation of the armrest 4 and hold it in the retracted position or the use position (FIG. 2).
The guide mechanism 16 includes a pair of left and right guide pins 20 on the armrest frame 12 side, and guide grooves 21 formed at predetermined positions on the left and right mounting brackets 15, respectively. The guide pin 20 is configured to be movable in the guide groove 21. The guide groove 21 is formed in a substantially arc shape around the center of the mounting shaft 11. In the lower part of the inner periphery of the guide groove 21, a storage posture contact surface 22 with which the guide pin 20 contacts when the armrest 4 is stored is formed (FIGS. 3 and 4). On the upper part of the inner periphery of the guide groove 21, a use posture contact surface 23 with which the guide pin 20 contacts with the armrest 4 in use is formed.

Therefore, a holding mechanism 25 is provided between the armrest frame 12 and the mounting bracket 15 to hold at least the state in which the armrest 4 is stored in the recess 10 provided in the backrest sheet 3.
The holding mechanism 25 includes an abutting support member 27 that holds the retracted state of the armrest 4 by a predetermined contact (friction) resistance generated when abutting against the vertical plate portion 26 of the mounting bracket 15. The contact support member 27 is attached to at least the guide pin 20. The contact support member 27 is provided with a contact support portion 28 that contacts and supports a predetermined portion of the vertical plate portion 26.
The contact support member 27 is provided with an insertion hole 29 for attachment through which the guide pin 20 is inserted. The contact support portion 28 is formed around the insertion hole 29.

That is, the contact support member 27 is formed to have a width larger than the guide groove 21, and the contact support portion 28 of the portion protruding from the guide groove 21 is contacted to a predetermined portion of the vertical plate portion 26, A predetermined contact resistance is generated.
Therefore, the contact support portion 28 of the contact support member 27 normally rotates around the attachment shaft 11 and does not rotate the armrest 4 in accordance with the posture change between the retracted posture and the use posture of the armrest 4. The armrest 4 is held in the retracted position by the contact resistance between the contact support portion 28 and the vertical plate portion 26.
The guide pin 20 is formed in a so-called shaft shape, and a flange-shaped receiving portion 49 is provided on the guide pin 20 inside the mounting bracket 15, and a contact support member is provided between the receiving portion 49 and the vertical plate portion 26. 27, and the contact support portion 28 of the contact support member 27 is brought into contact with the inner surface of the vertical plate portion 26.

The guide pin 20 is provided with a mounting screw hole 47, and a bolt 48 is screwed into the mounting screw hole 47.
Spring means such as a spring washer 50B is provided between the bolt 48 and the outer surface of the mounting bracket 15 in addition to the washer 50A, and the distance between the inner surface of the mounting bracket 15 and the receiving portion 49 can be changed and adjusted by the bolt 48. By optimizing the frictional force, it is possible to achieve both the reduction of the operation force against the posture change of the armrest 4 and the maintenance of the retracted posture.
The holding mechanism 25 may be provided on both the left and right sides of the armrest 4, but may be provided on either the left or right side. The end of the mounting shaft 11 on the side where the holding mechanism 25 is not provided is engaged with the holding mechanism 25. A groove 40 is formed, positioned outside the bush 42 provided in the mounting hole 41 of the mounting bracket 15, and the locking member 43 is locked to the bush 42 (FIG. 4).

  That is, since both ends of the mounting shaft 11 are located outside the left-right distance between the left and right mounting brackets 15, the guide groove 21 of one mounting bracket 15 on the side where the holding mechanism 25 is not provided (the right side in FIG. 2) One mounting shaft 11 and the guide pin 20 are inserted into each of the mounting holes 41, and then the armrest frame 12 is further moved to the side where the holding mechanism 25 is not provided (the right side in FIG. 2). The end of the mounting shaft 11 on the other side (left side) is positioned inside the mounting bracket 15, and then the armrest frame 12 is moved toward the mounting bracket 15 on the side (left side) on which the holding mechanism 25 is provided, and the guide The pin 20 and the mounting shaft 11 are inserted through the guide groove 21 and the mounting hole 41, respectively.

The holding mechanism 25 may be configured to hold the armrest 4 in the retracted position by the contact resistance with which the contact support member 27 is in contact with the mounting bracket 15, but in FIGS. 6 to 8, the contact support member 27, a pair of inner and outer sides is provided so as to contact the outer surface and the inner surface of the vertical plate portion 26, and the vertical plate portion 26 of the mounting bracket 15 is sandwiched from both the left and right sides by a pair of contact support members 27. The armrest 4 is securely held in the retracted position.
That is, the abutting support member 27 is provided with a pair of inner and outer abutting support members 27A and 27B inside and outside, and each of the inner and outer abutting support members 27A and 27B. The vertical plate portion 26 of the mounting bracket 15 is clamped from both inside and outside (left and right) by the contact support portion 28 provided on the inside.

Further, when the contact support portion 28 is provided on each of the inner and outer pair of inner contact support members 27A and 27B, the receiving portion 49 is brought into contact with the inner surface of the inner contact support member 27A, and the bolt 48 Spring means such as the spring washer 50B is provided between the outer contact support member 27B and the bolt 48 can change and adjust the distance between the inner contact support member 27A and the outer contact support member 27B. By optimizing the force, it is possible to realize both the reduction of the operation force with respect to the posture change of the armrest 4 and the maintenance of the retracted posture.
9 to 11 show another embodiment of the holding mechanism 25. The contact support member 27 is a movable contact support member 27E provided on the guide pin 20, and the movable contact support member. In addition to 27E, a fixed contact support member 27F is provided on the mounting shaft 11.

The fixed contact support member 27F is provided with a mounting hole 31 for mounting through the mounting shaft 11 in the flange portion 30 having a predetermined diameter, and the contact support portion 28 is provided in the flange portion 30 other than the mounting hole 31. Provide.
The fixed contact support member 27F may be provided on either the left or right side of the vertical plate portion 26 (FIGS. 9 to 11), but may be provided on both sides as shown in FIGS.
As described above, in order to facilitate understanding, the contact support member 27 is illustrated and described individually depending on the installation location, but the fixed contact support member 27F is sandwiched between the vertical plate portions 26. When the pair is provided on the inner fixed contact support member 27A (F) and the outer fixed contact support member 27B (F), the inner fixed contact support member 27A (F) and the outer fixed contact support member 27B (F). Since each of the contact support portions 28 is provided, a front end side contact support portion 28E formed on a predetermined portion of the moving contact support member 27E and a base side contact support portion 28F formed on the flange portion 30 are provided. Thus, when a pair of the front end side abutting support portion 28E and the base side abutting support portion 28F are provided inside and outside, an inner front end side abutting support portion 28E (A) and an inner base side abutting support portion 28F (A) , Outer tip side abutting support 28E (B) and And the outer base side abutment supporting part 28F (B), it can be provided in up to four different parts (FIGS. 14).

In addition, the installation location and the number of installation are arbitrary.
That is, the abutting support member 27 moves the inner abutting support member 27A and the outer abutting support member 27B provided on the guide pin 20 by moving the abutting support member 27E (inner moving abutment support member 27A (E)). In addition to the single or pair of moving contact support members 27E, a fixed contact support member 27F is provided on the mounting shaft 11,
When a pair of the fixed contact support members 27F are provided so as to sandwich the vertical plate portion 26, an inner fixed contact support member 27A (F) and an outer fixed contact support member 27B (F) are obtained.
Moreover, you may provide the contact | abutting support member 27 only in the outer side of the vertical board part 26 which is not illustrated, for example.
15 to 17 show another embodiment of the holding mechanism 25, and the contact support member 27 includes the moving contact support member 27E and the fixed contact support member of the embodiment of FIGS. 27F is integrally formed.

Therefore, the contact support member 27 is formed by a plate-like member that connects the mounting shaft 11 and the guide pin 20, and the contact support portion 28 is formed at a predetermined position of the contact support member 27.
That is, a mounting hole 31 that passes through the mounting shaft 11 is provided at the base of the contact support member 27, and an insertion hole 29 that passes through the guide pin 20 is provided at the tip of the contact support member 27.
The guide pin 20 is provided with a mounting screw hole 47, and a bolt 48 is screwed into the mounting screw hole 47.
That is, spring means such as a spring washer 50B is provided in addition to the washer 50A between the bolt 48 and the outer surface of the mounting bracket 15, and the distance between the inner surface of the mounting bracket 15 and the receiving portion 49 can be changed and adjusted by the bolt 48. Thus, the frictional force is optimized to achieve both the reduction of the operation force against the posture change of the armrest 4 and the maintenance of the retracted posture.

The abutting support member 27 is formed with a tip side abutting support portion 28 </ b> E at least at a predetermined portion around the insertion hole 29 of the abutting support member 27. In FIG. 20, in addition to the distal end side contact support portion 28 </ b> E, a base side contact support portion 28 </ b> F is formed at a portion of the contact support member 27 around the mounting shaft 11.
The abutting support member 27 may be provided as a pair of inner and outer sides so as to abut on the outer surface and the inner surface of the vertical plate portion 26. The vertical plate portion 26 of the mounting bracket 15 is sandwiched between the portion 28 and the contact support portion 28 of the outer contact support member 27B.

Thus, when the contact support portion 28 is provided on each of the inner and outer pair of inner contact support members 27A and the outer contact support member 27B, the receiving portion 49 is brought into contact with the inner surface of the inner contact support member 27A. Spring means such as the spring washer 50B is interposed between the bolt 48 and the outer contact support member 27B, and the distance between the inner contact support member 27A and the outer contact support member 27B can be changed and adjusted by the bolt 48. The inner contact support member 27A and the outer contact support member 27B have a predetermined pressure so as to sandwich the vertical plate portion 26.
In addition, an attachment hole 31 for attachment through which the attachment shaft 11 is inserted is provided at the base of each of the inner contact support member 27A and the outer contact support member 27B of the contact support member 27, and the attachment shaft 31 is provided in the attachment hole 31. 11 is inserted into the mounting hole 31 of the inner inner contact support member 27A, and a cylindrical portion 52 protruding outward is formed in the mounting hole 31 of the inner inner support member 27A. The mounting hole 31 is press-fitted, and the front end side of the inner contact support member 27A and the outer contact support member 27B has a predetermined pressure so as to sandwich the vertical plate portion 26, thereby facilitating mounting.

Further, a closing plate portion 53 is provided at the outer end of the cylindrical portion 52 of the inner contact support member 27A. The end portion of the mounting shaft 11 is press-fitted and fixed to the cylindrical portion 52 with a predetermined pressure.
The mounting hole 31B of the outer contact support member 27B is inserted and fitted into the outer periphery of the cylindrical portion 52 outside the vertical plate portion 26 of the mounting bracket 15.
18 to 22 show another embodiment of the holding mechanism 25, in which the contact support member 27 is formed integrally with a moving contact support member 27E and a fixed contact support member 27F. A cylindrical portion 52 protruding outward is formed in the mounting hole 31 of the inner inner contact support member 27A of the pair of contact support members 27, and an engagement portion 55 is formed on the outer periphery of the cylindrical portion 52. To do. The engaging portion 55 is engaged with the engaging portion 56 provided in the mounting hole 31 of the outer contact support member 27B, and the vertical plate portion of the mounting bracket 15 by the inner contact support member 27A and the outer contact support member 27B. 26 is maintained, and the inner contact support member 27A and the outer contact support member 27B can be easily attached.

  Also in the embodiment of FIGS. 12 to 14, the cylinder projecting outwardly into the mounting hole 31 of the inner fixed contact support member 27 </ b> F on the inner side of the pair of inner and outer fixed contact support members 27 </ b> F of the contact support member 27. An engagement portion 55 may be formed on the outer periphery of the cylindrical portion 52, and is engaged with an engagement portion 56 provided in the attachment hole 31 of the outer fixed contact support member 27F. The holding state of the vertical plate portion 26 of the bracket 15 is maintained, and attachment of the inner contact support member 27A and the outer contact support member 27B is facilitated.

23 to 26 show another embodiment of the holding mechanism 25. For example, the holding mechanism 25 is provided on the left side of the armrest frame 12, for example, on the left side (right side in FIG. 23). The left guide pin 20 and the mounting shaft 11 are inserted into the guide groove 21 and the mounting hole 41 of the right mounting bracket 15 on the opposite side (left side in FIG. 23) not provided with 25, and are positioned at predetermined positions. Then, the left end of the guide pin 20 and the mounting shaft 11 is set to be a predetermined position inside the right mounting bracket 15, and a screw hole (not shown) is provided in the left end of the guide pin 20 and the mounting shaft 11. The fixed side locking member 60 (bolt 48) and the moving side locking member 61 are screwed and attached to the screw holes from the outside of the right mounting bracket 15, respectively.
Therefore, even when the mounting space for the armrest 4 is small, it can be easily mounted.

  In this case, the configuration of the contact support member 27 is arbitrary, and the contact support member 27 is divided into a movable contact support member 27E provided on the guide pin 20 and a fixed contact support member 27F. The configuration may be a configuration in which the moving contact support member 27E and the fixed contact support member 27F are integrally formed, or a configuration in which a pair of inner and outer contact support members 27A and 27B are provided, A combination of the above embodiments may be used.

  The configuration of the mounting shaft 11 and the guide pin 20 is also arbitrary, and may be simply formed in the shape of a shaft. However, a receiving portion 49 is provided on each of the mounting shaft 11 and the guide pin 20, and Spring means such as a spring washer 50B is interposed in each guide pin 20, and a fixed side locking member 60 (bolt 48) and a moving side locking member 61 are provided between the inner contact support member 27A and the outer contact support member 27B. A configuration in which the interval of the armrest 4 can be changed and adjusted is preferable because not only the mounting of the armrest 4 is facilitated but also the certainty of holding the armrest 4 is improved.

(Operation of Example)
Since the armrest 4 is rotatably attached to the center of the attachment shaft 11 between a retracted posture stored in the recess 10 provided in the back seat 3 and a use posture positioned at a predetermined position above the upper surface of the seat 2. If the tip of the armrest 4 is held and rotated from one posture to the center of the mounting shaft 11, the other posture is obtained.
The armrest 4 is pivotable about the mounting shaft 11 between a retracted posture stored in a recess 10 provided in the back seat 3 and a use posture located above the upper surface of the seat 2, and the armrest frame of the armrest 4. 12 is attached to the mounting bracket 15 of the back frame 13, and a guide mechanism 16 for guiding the rotation of the armrest 4 is provided between the armrest frame 12 and the mounting bracket 15. Guide to the other posture.

The guide mechanism 16 includes a pair of left and right guide pins 20 provided on the armrest frame 12. The guide pins 20 are engaged with guide grooves 21 provided on the mounting bracket 15, and the guide grooves 21 are centered on the mounting shaft 11. Since the storage posture contact portion 22 is formed at the lower part of the inner periphery of the guide groove 21, when the armrest 4 is erected and stored in the recess 10 of the dorsal seat 3, The guide pin 20 comes into contact with the storage posture contact portion 22 of the guide groove 21 and stops rotating.
Since the use posture contact surface 23 is formed at the upper part of the inner periphery of the guide groove 21, when the armrest 4 is pulled out from the recess 10 and is lowered to the center of the mounting shaft 11, the guide pin 20 is inserted into the guide groove 21. The armrest 4 is brought into contact with the use posture contact surface 23 to stop the rotation, and the armrest 4 is held in use.

Since at least a holding mechanism 25 for holding the armrest 4 in the retracted posture is provided between the armrest frame 12 and the mounting bracket 15, the armrest 4 stored in the recess 10 is held in the retracted posture by the holding mechanism 25. .
Since the holding mechanism 25 includes a contact support member 27 that contacts a predetermined portion (vertical plate portion 26) of the mounting bracket 15 to generate a predetermined contact resistance, the holding mechanism 25 is stored in the recess 10. When a load (inertia or the like) that rotates the armrest 4 forward about the mounting shaft 11 acts on the armrest 4 that is in contact, the armrest 4 is retracted by contact resistance when the contact support member 27 is in contact with the mounting bracket 15. Hold on.

That is, since the abutment support member 27 is provided in a portion that moves together with the armrest 4, a load (inertia or the like) that rotates the armrest 4 forward about the mounting shaft 11 is applied to the armrest 4 stored in the recess 10. When it acts, the rotation of the armrest 4 is stopped by the contact resistance generated when the contact support member 27 is in contact with the mounting bracket 15, and the armrest 4 is held in the retracted posture.
Therefore, the posture change operation of the armrest 4 is performed with an operation force larger than the contact resistance between the contact support member 27 and the mounting bracket 15.

The contact resistance between the abutment support member 27 and the mounting bracket 15 is generated by abutting the abutment support portion 28 provided on the abutment support member 27 against the attachment bracket 15, so that the posture changing operation of the armrest 4 is easy. It can be done smoothly.
Since the contact support portion 28 is provided in a predetermined portion of the contact support member 27 that moves together with the armrest 4 that moves, the contact support member 27 and the mounting bracket 15 can be held by contact resistance with a simple configuration. .
Since the contact support member 27 of the holding mechanism 25 is attached to the guide pin 20 and the contact support member 27 is provided with the contact support portion 28, the contact support portion 28 is brought into contact with the vertical plate portion 26 of the mounting bracket 15. The armrest 4 is held in the retracted posture in contact.

The contact support member 27 has a mounting insertion hole 29 for inserting the guide pin 20, and the contact support member 28 is provided in the contact support member 27 around the insertion hole 29. The surrounding contact support portion 28 contacts the vertical plate portion 26 to hold the armrest 4 in the retracted posture.
That is, since the contact support member 27 is formed to have a width larger than that of the guide groove 21, the contact support portion 28 that protrudes from the guide groove 21 of the vertical plate portion 26 corresponds to the vertical plate portion 26. The armrest 4 is held in the retracted position by contacting the predetermined portion.

  The guide pin 20 is formed in a so-called shaft shape, and a flange-shaped receiving portion 49 is provided on the guide pin 20 inside the mounting bracket 15, and abuts and supports the guide pin 20 between the receiving portion 49 and the vertical plate portion 26. The member 27 is clamped, the contact support portion 28 of the contact support member 27 is brought into contact with the inner surface of the vertical plate portion 26, and spring means such as a spring washer 50 B is provided between the bolt 48 and the outer surface of the mounting bracket 15. Therefore, when the bolt 48 is screwed into the mounting screw hole 47 of the guide pin 20, the distance between the inner surface of the mounting bracket 15 and the receiving portion 49 can be changed and adjusted according to the degree of screwing of the bolt 48, and the friction. By optimizing the force, it is possible to realize both the reduction of the operation force with respect to the posture change of the armrest 4 and the maintenance of the retracted posture.

The contact support member 27 of the holding mechanism 25 is provided with a pair of inner and outer sides so as to contact the outer surface and the inner surface of the vertical plate portion 26, and the vertical plate portion 26 of the mounting bracket 15 is sandwiched by the pair of contact support members 27. Therefore, the armrest 4 can be held by the resistance generated on the left and right side surfaces of the vertical plate portion 26, and the holding reliability can be improved.
That is, the contact support member 27 is provided with a pair of an inner contact support member 27A and an outer contact support member 27B, so that the inner contact support member 27A and the outer contact support member 27B are provided. The vertical plate portion 26 of the mounting bracket 15 is clamped from both the inside and outside (left and right) by the contact support portions 28 provided on each of 27B.

Therefore, in another embodiment of the holding mechanism 25 of FIGS. 9 to 11, the contact support member 27 is a movable contact support member 27E provided on the guide pin 20, and the movable contact support member 27E is the same. In addition, a fixed contact support member 27F is provided on the mounting shaft 11, and the fixed contact support member 27F is provided with a mounting hole 31 for mounting through the mounting shaft 11 in a flange portion 30 having a predetermined diameter. Since the contact support portion 28 is provided on the flange portion 30 other than the mounting hole 31, the contact area between the contact support portion 28 and the vertical plate portion 26 is increased, so that the armrest 4 can be held reliably. Can be improved.
The fixed contact support member 27F is provided with a mounting hole 31 for mounting through the mounting shaft 11 in the flange portion 30 having a predetermined diameter, and the contact support portion 28 is provided in the flange portion 30 other than the mounting hole 31. Since it is provided, the contact support portion 28 of the flange portion 30 around the attachment hole 31 contacts the vertical plate portion 26.

  Accordingly, when a pair of fixed contact support members 27F are provided so as to sandwich the vertical plate portion 26, an inner fixed contact support member 27A (F) and an outer fixed contact support member 27B (F) are obtained, and the inner fixed contact support member 27F is obtained. Since the support member 28 is provided in each of the support member 27A (F) and the outer fixed contact support member 27B (F), the tip side contact support member 28E formed in a predetermined portion of the moving contact support member 27E. And a base side abutting support portion 28F formed on the flange portion 30 to form an inner moving abutting support member 27A (E), an outer moving abutting support member 27B (E), and an inner fixed abutting support member 27A. Each contact support portion 28 of (F) and the outer fixed contact support member 27 </ b> B (F) contacts the vertical plate portion 26.

Accordingly, in another embodiment of the holding mechanism 25 of FIGS. 15 to 17, the contact support member 27 is formed integrally with the movable contact support member 27 </ b> E and the fixed contact support member 27 </ b> F with respect to the mounting shaft 11. Since the contact support member 27 is formed by a plate-like member that connects the mounting shaft 11 and the guide pin 20, the contact support portion 28 of the contact support member 27 contacts the vertical plate portion 26 of the mounting bracket 15. Make contact.
In addition, since the attachment hole 31 for attachment through which the attachment shaft 11 is inserted is provided at the base portion of the contact support member 27, the attachment hole 31 is inserted through the attachment shaft 11 so that the contact support member 27 is attached to the attachment shaft. 11 is attached so as to rotate together with the armrest 4 at the center.
The holding mechanism 25 is configured to have a contact support member 27 that contacts a predetermined portion of the vertical plate portion 26 of the mounting bracket 15 and supports it by a predetermined contact resistance. When a load (inertia or the like) that rotates the armrest 4 forward about the attachment shaft 11 acts on the armrest 4, the armrest 4 is brought into the retracted position by the contact resistance of the contact surface between the contact support member 27 and the vertical plate portion 26. Hold.

The abutment support portion 28 of the abutment support member 27 includes a distal end side abutment support portion 28E formed at a portion of the abutment support member 27 at a predetermined portion in the length direction of the abutment support member 27 with respect to the insertion hole 29, and Since it is composed of the base side contact support portion 28F formed on the peripheral contact support member 27 around the mounting shaft 11, the front end side contact support portion 28E of the contact support member 27 and the base side contact The support portion 28 </ b> F contacts the vertical plate portion 26 of the mounting bracket 15 to hold the armrest 4.
The abutting support members 27 are provided as a pair of inner and outer sides with respect to the vertical plate portion 26 and are brought into contact with the outer surface and the inner surface of the vertical plate portion 26 by the abutting support portions 28 of the respective abutting support members 27. The contact area between the contact support portion 28 and the vertical plate portion 26 of the mounting bracket 15 can be increased, and the armrest 4 is firmly held in the retracted position.

Further, since the vertical plate portion 26 of the mounting bracket 15 is sandwiched by the contact support portions 28 of the pair of contact support members 27, the contact resistance by the contact support portions 28 is increased, and the armrest 4 is firmly in the retracted position. Hold on.
In addition, the mounting hole 31 of the inner inner contact support member 27A of the pair of contact support members 27 is formed with a cylindrical portion 52 protruding outward, and a closing plate portion 53 is formed at the outer end of the cylindrical portion 52. Therefore, the cylindrical portion 52 of the inner contact support member 27A is press-fitted into the mounting hole 41 of the mounting bracket 15, and the mounting hole 31 of the outer contact support member 27B is inserted into the outer periphery of the cylindrical portion 52. Then, the end portion of the mounting shaft 11 is inserted into and fixed to the cylindrical portion 52 (FIGS. 7, 10, 16, and 19).
Therefore, assembly becomes easy.

  Accordingly, in the embodiment of the holding mechanism 25 of FIGS. 12 to 26, the inner fixed contact support member 27 </ b> F of the pair of contact support members 27 and the inner contact of the inner side of the pair of contact support members 27. A cylindrical portion 52 projecting outward is formed in the mounting hole 31 of the support member 27A, an engaging portion 55 is formed on the outer periphery of the cylindrical portion 52, and the engaging portion 55 has an outer abutting support member 27B. Since the mating portion 56 provided in the mounting hole 31B is engaged, the holding state of the vertical plate portion 26 of the mounting bracket 15 by the inner contact support member 27A and the outer contact support member 27B is temporarily fixed and held. And facilitate assembly.

  Accordingly, in another embodiment of the holding mechanism 25 of FIGS. 23 to 26, the left guide pin 20 and the mounting shaft 11 are inserted into the guide groove 21 and the mounting hole 41 of the mounting bracket 15 on the side where the holding mechanism 25 is not provided. And the guide pin 20 on the side where the holding mechanism 25 is provided and the end of the mounting shaft 11 are set so as to be at a predetermined position inside the mounting bracket 15 on the right side. Therefore, first, the guide pin 20 and the mounting shaft 11 are inserted through the guide groove 21 and the mounting hole 41 of the mounting bracket 15 on the side where the holding mechanism 25 is not provided, and then the end portions of the guide pin 20 and the mounting shaft 11 are inserted. Is positioned at a predetermined position on the inner side of the mounting bracket 15, and the fixed side locking member 60 (bolt 48 is attached to the end of the guide pin 20 and the mounting shaft 11 from the outer side of the mounting bracket 15. Attaching the movable-side engaging member 61 is engaged respectively threadedly with.

Therefore, even when the mounting space for the armrest 4 is small, it can be easily mounted. In particular, when the mounting space in the left-right direction is small, it is possible to perform the mounting operation of the guide pin 20 and the mounting shaft 11 and the mounting bracket 15, which is preferable. In the above description, the holding mechanism 25 is described as holding the armrest 4 in the retracted position. However, if the contact support member 27 is brought into contact with the mounting bracket 15, the armrest 4 pulled out from the recess 10 is The holding mechanism 25 can be operated even before the use state is reached, and even if any load is applied to the armrest 4 in addition to its own weight, the holding mechanism 25 is not immediately turned downward, and is kept between the retracted position and the used position. Stopped at a predetermined position.

Therefore, the effect | action which prevents the displacement of the armrest 4 carelessly also between a retracted attitude | position and a use attitude | position can also be anticipated.
In addition, in order to make an understanding easy, although the fine point is attached | subjected to the contact | abutting support part 28 of each figure, a structure is not limited by this.
Further, in the embodiment, for ease of understanding, directions such as front and rear and up and down are specifically described based on an example in which the guide groove 21 is formed on the rear side of the mounting shaft 11. You may form in the front side of the attachment shaft 11, and a structure is not limited by description of directions, such as front-back and up-down.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle seat, 2 ... Seat seat, 3 ... Backrest seat, 4 ... Armrest, 10 ... Recess, 11 ... Mounting shaft, 12 ... Armrest frame, 13 ... Backrest frame, 15 ... Mounting bracket, 16 ... Guide mechanism , 20... Guide pin, 21... Guide groove, 22 .. storage posture contact portion, 23 .. use posture contact portion, 25 .. holding mechanism, 26 .. vertical plate portion, 27. 29, insertion hole, 30 ... flange, 31 ... mounting hole, 40 ... engaging groove, 41 ... mounting hole, 42 ... bush, 43 ... locking member, 45 ... side plate, 46 ... horizontal axis, 47 ... mounting Screw hole 48 ... bolt 49 ... receiving part 50A ... washer 50B ... spring washer 52 ... cylinder part 53 ... occlusion plate part 55 ... engagement part 56 ... engagement part 60 ... fixed side locking Member, 61... Moving side locking member.

Claims (9)

The armless bets, mounted between, rotatably backrest sheet around the mounting shaft between the use position located at a predetermined height above the top surface of the upright stored position and the seat sheet, an armrest frame of the armless bets between the arm and the back凭frame mounting bracket, the armless preparative provided holding Organization for holding the stored position, the retaining Organization has contact with the armless bets in a predetermined portion of the mounting bracket more constitutes the contact supporting member to be moved together,
Guide the movement of the armrest formed by a guide pin provided in the armrest frame and a guide groove provided in the mounting bracket to which the guide pin moves between the armrest frame and the mounting bracket of the dorsal frame. Providing a guide mechanism
The guide groove is formed in an arc shape centered on the mounting shaft,
The contact support member has a contact support portion that contacts a predetermined portion of the vertical plate portion of the mounting bracket,
The contact support portion includes a distal end side contact support portion provided on the guide pin side and a base side contact support portion provided on the mounting shaft side,
The vehicle seat according to claim 1, wherein the front end side abutting support portion is provided radially outside the guide groove with respect to the mounting shaft center . According to claim 1, before Symbol abutment support member is configured to have a through hole for mounting the inserted before Symbol Gaidopi down,
The abutment support portion is a vehicle seat formed around the insertion hole . In 請 Motomeko 1 or 2, wherein the contact supporting member is formed by a plate-like member having a predetermined length, attaching the Gaidopi on to one end of the abutting support member, the other end of the abutting support member A vehicle seat rotatably attached to the attachment shaft . According to claim 1 or 2, wherein the contact supporting member is formed by a plate-like member having a predetermined length, provided with a through hole for mounting said Gaidopi on to the tip of the contact supporting member, the contact supporting portion a mounting hole provided in the base of the timber mounting said mounting shaft, the vehicle seat provided with the contact supporting portion in abutment support member between the insertion hole and the mounting hole. In any one of claims 1 to 4, wherein the contact support member, said inner and outer pair is provided relative to the vertical plate portion of the mounting bracket, the contact supporting portion abutting before Kitateban portion A vehicle seat provided on each abutment support member, wherein each abutment support portion sandwiches the vertical plate portion from the inside and outside. In any one of claims 1 to 5, wherein the flange-like receiving portion provided in the Gaidopi down the inside of the mounting bracket, the mounting screw hole formed in the Gaidopi down, the screw hole for with said mounting the mounting bracket so from the outside of the bets screwed bolt, a configuration in which the outer peripheral portion or the Gaidopi down of the bolt moves within the guide groove, the outer periphery or the Gaidopi of the bolt outside of the mounting bracket emissions periphery vehicle seat provided with a spring means for pressing said contact supporting member to the vertical plate portion of said mounting bracket to the. In any one of claims 1 to 6, wherein the contact support member, said mounting bracket and out pair provided vertical plate portion of the criteria, outside the mounting hole of the inner side of the contact supporting member forming a cylindrical portion protruding, on the outer periphery of the tubular portion to form a first engagement portion, the second engagement portion on the outer side of the contact support member, wherein the first engaging portion is engaged Vehicle seat provided. In any one of claims 1 to 7, wherein the armrest frame provided with the retaining Organization to the left or right one side of arm, the guide groove and the mounting of the mounting bracket on the side not provided with the holding Organization the Gaidopi emissions Contact and the mounting shaft into the hole in each inserted in a state of being positioned in a predetermined position, an end portion of the Gaidopi down Contact and the mounting shaft on the side provided with the holding Organization is, the mounting bracket the inner set so as to be positioned at a predetermined position, said screw hole respectively provided at an end portion of the Gaidopi down Contact and the mounting axis of the holding device providing a structure side, wherein on the side providing the holding Organization Gaidopi down Contact and the mounting shaft of each said mounting bracket each threadedly movable locking member Contact and fixed side locking member from the outer engagement was attached was vehicle seat on the end of. The armrest is attached to the backrest seat so as to be rotatable about the attachment shaft between the standing storage posture and the use posture located at a predetermined height above the upper surface of the seat. A holding mechanism that holds the armrest in a retracted position between the mounting bracket and the holding mechanism is configured by a contact support member that contacts a predetermined portion of the mounting bracket and moves together with the armrest,
Between the mounting bracket of the seat back frame and the arm rest frame, and Gaidopi emissions provided on the armrest frame, constituted by a guide groove provided in the mounting bracket to the Gaidopi down moves the guide Organization for guiding movement of the armless preparative provided, the contact supporting member, said the moving contact supporting member provided in Gaidopi down, the fixed and the contact supporting member provided on the mounting shaft split configuration, the moving contact in either one or both of the support member and the fixed contact support member, said mounting bracket vertical plate portion seat of a vehicle provided with abutting the contact supporting portion at a predetermined portion of .

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