JP2011183878A - Vehicle seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an armrest easy in assembling-installation by reducing the number of part items, and restraining generation of an abnormal sound. <P>SOLUTION: The armrest 4 rotates around an installation shaft 11 between a storage attitude and a use attitude. A guide holding mechanism 16 for holding the armrest 4 in the storage attitude is arranged between an armrest frame 12 and a mounting bracket 15. The guide holding mechanism 16 includes a guide pin 20 moving on a circular arc and a guide groove 21. A movement regulating means 30 is arranged in the guide groove 21, for holding the armrest 4 in the storage attitude by regulating the movement of the guide pin 20. The movement regulating means 30 includes a fitting member 31 having a regulating part 32 for holding by being elastically deformed when the guide pin 20 abuts and an outside installing part 36 installed on the mounting bracket 15. <P>COPYRIGHT: (C)2011,JPO&INPIT

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.
Further, in the known example, the engagement pin simply abuts on the guide groove to stop the rotation of the armrest, so that the shock when the engagement pin abuts on the guide groove is uncomfortable and the feeling of operation of the armrest is reduced. There is also a problem that there is no sense of quality.
In addition, the known example has a problem that abnormal noise occurs due to vibration of the armrest because the movement of the armrest is stopped by simply bringing the guide pin into contact with the guide groove.
Although the above-mentioned known example does not describe how the engagement body engaged with the guide pin is disengaged, it is not easy to remove the engagement body once engaged, and the setting is not easy. There is a problem that the operation is uncertain.
The present application provides an armrest that has a small number of parts, is easy to assemble and attach, and suppresses the generation of abnormal noise by devising the configuration of the movement restricting means.

In the present invention, the armrest 4 is attached to the dorsal seat 3 so as to be rotatable about the attachment shaft 11 between the standing storage posture and the use posture located above the upper surface of the seat 2, and the armrest frame 12 of the armrest 4. And a mounting bracket 15 of the dorsal frame 13 is provided with at least a guide holding mechanism 16 for holding the armrest 4 in a retracted posture. The guide holding mechanism 16 is provided with the mounting shaft 11 provided on the armrest frame 12. And a guide groove 21 provided in the mounting bracket 15 to which the guide pin 20 moves. The guide groove 21 has the guide pin 20 when the armrest 4 is in the retracted position. A movement restricting means 30 for restricting and holding the movement of the pin 20 is provided, and the movement restricting means 30 is fitted in the guide groove 21. The vehicle seat is configured to include a fitting member 31 provided with a restriction portion 32 that is elastically deformed and held when the guide pin 20 abuts, and an outer attachment portion 36 that is attached to the attachment bracket 15. It is.
In the present invention, the guide groove 21 includes an arcuate one-side inner peripheral surface 24 and the other inner peripheral surface 25 centered on the mounting shaft 11, and a storage posture contact portion 22 on the inner periphery of the guide groove 21. In the retracted posture of the armrest 4, the guide pin 20 abuts against the movement restricting means 30 and the inner periphery of the guide groove 21, or only against the movement restricting means 30. The vehicle seat is configured to be in contact with the vehicle.
In the present invention, at least one restricting portion 32 is provided at a predetermined position of the fitting member 31, and the restricting portion 32 has a resistance portion 33 protruding toward the other inner peripheral surface 25 of the guide groove 21. A pressing portion 35 that presses the guide pin 20 toward the inner peripheral surface of the guide groove 21 is formed in the restriction portion 32 of the resistance portion 33 on the storage posture contact portion 22 side, and the resistance portion The vehicle seat has a recess 34 formed between 33 and the pressing portion 35.
In the present invention, a part or all of the fitting member 31 of the movement restricting means 30 fitted in the guide groove 21 on the outer attachment portion 36 side attached to the attachment bracket 15 is provided on the outer attachment portion 36 side. The vehicle seat is provided with a contact portion 40 that contacts the inner peripheral surface of the guide groove 21.
In the present invention, the contact portion 40 is a vehicle seat provided on the outer attachment portion 36 side of the restriction portion 32.
In the present invention, the restriction portion 32 is a vehicle seat provided on both upper and lower sides of the fitting member 31 fitted in the guide groove 21.
In the present invention, a substantially C-shaped shape that overlaps with the inner periphery of the guide groove 21 and protrudes inward from the storage posture contact portion 22 and / or the use posture contact portion 23 at the tip of the restriction portion 32 in a side view. This is a vehicle seat in which the bent portion 55 is formed.
In the present invention, the bent portion 55 is provided at the tip of the restricting portion 32 at both the upper and lower ends of the fitting member 31, and is a vehicle seat in which the tip of the upper and lower bent portion 55 is connected by a connecting portion 58. is there.

According to the first aspect of the present invention, the movement restricting means 30 includes the fitting member 31 provided with the elastically deforming restricting portion 32 fitted in the guide groove 21 and the outer mounting portion 36. The structure is simple, the number of parts is small, assembly and installation can be performed easily and reliably, and the guide pin 20 abuts against the elastically deformable restricting portion 32, so that it is possible to provide a high-quality feeling of operation without shock. Further, the guide pin 20 is pressed against the guide groove 21 by the elasticity of the restricting portion 32, so that the anti-vibration property against vibration can be improved and the generation of abnormal noise can be prevented.
Further, since the movement restricting means 30 has the fitting member 31 fitted in the guide groove 21, the fitting member 31 is positioned accurately by contacting the inner peripheral surface of the guide groove 21, Since it is supported by the peripheral surface, the guide pin 20 can be reliably held.
Moreover, since the restriction | limiting part 32 elastically deforms and hold | maintains the guide pin 20, it can hold | maintain reliably.
According to the second aspect of the present invention, when the guide pin 20 is brought into contact with the movement restricting means 30, it is possible to provide a sense of high-quality operation without shock, to prevent the generation of noise due to vibration, and to guide the guide pin 20 to the guide. When abutting against the inner periphery of the groove 21, the support strength of the armrest 4 can be strengthened.
In the invention of claim 3, the fitting member 31 is configured such that the restriction portion 32 is positioned at least in the lower portion of the guide groove 21, and the restriction portion 32 includes the resistance portion 33, the pressing portion 35, and the recess portion 34. As a result, the armrest 4 can be securely held in the retracted posture, and abnormal noise can be prevented.
In the invention of claim 4, the contact portion 40 of the fitting member 31 contacts the inner peripheral surface of the guide groove 21 on the outer mounting portion 36 side (rear inner peripheral surface 24). Further, when the guide pin 20 is engaged, the contact portion 40 is supported by the inner peripheral surface of the guide groove 21 on the outer mounting portion 36 side (rear inner peripheral surface 24). Can be securely held.
In the invention of claim 5, the contact portion 40 is provided on the outer mounting portion 36 side (rear inner peripheral surface 24) of the restricting portion 32, so that it can be provided in the most effective place for holding the guide pin 20. .
According to the sixth aspect of the present invention, the armrest 4 can be held and abnormal noise can be prevented even in the use posture.
In the invention of claim 7, since the guide pin 20 hits the inner peripheral surface 56 of the bent portion 55 before coming into contact with the storage posture contact surface 22 or the use posture contact portion 23, the shock is absorbed and the operational feeling is improved. At the same time, the generation of abnormal noise when the rotation of the armrest 4 is stopped is suppressed.
According to the eighth aspect of the present invention, since the tips of the upper and lower bent portions 55 are connected by the connecting portion 58, the positioning of the bent portion 55 can be facilitated, and the movement restricting means 30 can be easily attached. The portion 58 can suppress the elastic deformation of the bent portion 55 more than necessary when the guide pin 20 is disengaged from the restricting portion 32, and can improve the reliability of the guide pin 20 being held engaged.

The perspective view of a vehicle seat. The perspective view of an armrest frame. The perspective view of the bracket part of a use posture. The perspective view seen from the inside of the bracket part of a use posture. The perspective view of the bracket part on the opposite side of a use attitude | position. The perspective view of a movement control means. Sectional drawing of a movement control means. Sectional drawing of a movement control means. Sectional drawing of the state which attached the movement control means to the guide groove. The side view of a storing attitude | position. The movement pin side view of the guide pin. The side view of the state which the guide pin contact | abutted to the movement control means. The side view of the state which the guide pin fitted to the movement control means. The side view before a guide pin contact | abuts to a contact surface. The side view in which the guide pin contacted the contact surface. The perspective view of the other Example of a movement control means. FIG. The perspective view of the other Example of a movement control means. FIG. 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 has left and right ends of the mounting shaft 11 projecting from the left and right sides of an armrest frame 12 having an arbitrary shape, and the mounting shaft 11 can be rotated to a mounting bracket 15 provided on the back frame 13 of the backrest seat 3. Axis mounting (in order to facilitate understanding, description will be made by showing directions such as left and right, but the configuration is not limited thereby).
A guide holding 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 at a predetermined height position (FIG. 2).

  The guide holding mechanism 16 includes a pair of guide pins 20 provided on the armrest frame 12. The guide pin 20 is engaged (inserted) into a guide groove 21 formed at a predetermined position of the mounting bracket 15. The guide groove 21 is formed in a substantially arc shape at the center of the mounting shaft 11, and a storage posture contact surface 22 is formed in the lower part of the inner periphery of the guide groove 21 (FIG. 3). A use posture contact surface 23 is formed on the upper part of the inner periphery of the guide groove 21. As shown in FIG. 7, the guide groove 21 has a substantially arc-shaped one side inner peripheral surface (rear side inner peripheral surface) 24 around the attachment shaft 11 and another side inner peripheral surface (front side inner peripheral surface) 25.

A movement restricting means 30 for restricting the movement of the guide pin 20 in the guide groove 21 is provided in the guide groove 21. The movement restricting means 30 has a fitting member 31 to be fitted in the guide groove 21.
The fitting member 31 of the movement restricting means 30 is formed of an elastically deformable member such as a resin (including a synthetic resin) that can be elastically deformed when fitted in the guide groove 21.

  At a predetermined position of the fitting member 31 of the movement restricting means 30, at least a restricting portion 32 that restricts the return of the guide pin 20 that is in contact with the storage posture contact portion 22 of the guide groove 21 is formed. The restriction portion 32 is provided with a resistance portion 33 protruding into the guide groove 21 toward the front side (from the rear inner peripheral surface 24 side to the front inner peripheral surface 25 side). 35 is formed. The pressing portion 35 extends the guide pin 20 over the resistance portion 33 to a part or all of the storage posture contact portion 22, the rear inner peripheral surface 24, and the front inner peripheral surface 25 which are the inner peripheral surfaces of the guide grooves 21. It is pressed elastically (FIGS. 10 and 15).

When the concave portion 34 is formed on the rear side between the resistance portion 33 and the pressing portion 35 (FIG. 7), the guide pin 20 over the resistance portion 33 is fitted into the concave portion 34, and the holding force of the guide pin 20 is improved. (In FIG. 8, for ease of understanding, the restriction part 32 before deformation is shown by a broken line).
Therefore, the restriction portion 32 is formed by the resistance portion 33, the pressing portion 35, and the concave portion 34, and the guide pin 20 is brought into contact with the inner peripheral surface of the guide groove 21 without any gap, thereby preventing the generation of abnormal noise.

Further, the guide pin 20 comes into contact with the movement restricting means 30 and the inner periphery of the guide groove 21 when the armrest 4 is in the retracted posture state.
The predetermined portion of the fitting member 31 is provided with an outer mounting portion 36 located on the outer surface side and rear side of the mounting bracket 15 (FIGS. 3, 5, and 6). The movement restricting means 30 fits the fitting member 31 into the guide groove 21 of the mounting bracket 15, and fixes the outer mounting portion 36 of the movement restricting means 30 to the mounting bracket 15 with a fixture 37 such as a bolt.

Therefore, since the outer mounting portion 36 is fixed to the mounting bracket 15 with the fixture 37 with the fitting member 31 fitted in the guide groove 21, the movement restricting means 30 can move even if any force (load) is applied. The restricting means 30 is not detached from the guide groove 21 and can be operated stably, and holds the armrest 4 in a predetermined posture.
If the inner diameter of the mounting hole 38 of the outer mounting portion 36 is larger than the outer diameter of the mounting tool 37, it is preferable because the mounting position of the movement restricting means 30 can be finely adjusted (FIG. 9).

  Thus, when the armrest 4 is turned upward from the use posture, the guide pin 20 comes into contact with the resistance portion 33 of the restriction portion 32, and when the armrest 4 is further turned upward, the guide pin 20 is moved by the operation force. When the guide pin 20 gets over the resistance portion 33 and the guide pin 20 gets over the resistance portion 33, the guide pin 20 comes into contact with the retracted posture of the guide groove 21. While abutting on the portion 22, the guide pin 20 abuts on the inner peripheral surface of the guide groove 21 without a gap while being fitted and held in the recess 34 between the resistance portion 33 and the pressing portion 35.

  When the guide pin 20 gets over the resistance portion 33 of the restricting portion 32, the resistance portion 33 gives resistance to the movement of the guide pin 20. Therefore, the resistance portion 33 not only prevents the return of the guide pin 20, but also resistance when getting over. This gives the operator a feeling of completion (completion) of the operation, and has an effect of giving a good feeling of operation. Further, the contact with the restriction portion 32 gives resistance to the movement of the guide pin 20 (FIG. 14). FIG. 15) suppresses the generation of abnormal noise when the guide pin 20 comes into contact with the storage posture contact portion 22 or the use posture contact portion 23 of the guide groove 21.

Thus, a contact portion 40 that contacts the rear inner peripheral surface 24 is formed on a part or all of the rear surface of the fitting member 31 on the rear inner peripheral surface 24 side (FIG. 7). When the fitting member 31 is fitted into the guide groove 21 and the outer mounting portion 36 of the movement restricting means 30 is fixed to the mounting bracket 15 by the mounting tool 37, the abutting portion 40 has the rear inner peripheral surface 24 of the guide groove 21. Fix it in a state where it abuts against.
Therefore, the contact portion 40 serves as a support member for the restriction portion 32 when the guide pin 20 gets over the restriction portion 32, and ensures resistance application by the resistance portion 33.

Further, the abutting portion 40 can position the restricting portion 32 at an appropriate position at a predetermined interval from the front inner peripheral surface 25, and expects a positioning action of the restricting portion 32.
Thus, the inner holding part 41 is formed on the armrest frame 12 side (inner side) of the fitting member 31, the fitting groove 42 is formed between the outer mounting part 36 and the inner holding part 41, and the fitting groove 42 is formed. The vertical bracket 43 of the mounting bracket 15 is fitted.
For this reason, the movement restricting means 30 is positioned at three locations of the contact portion 40 of the fitting member 31, the outer mounting portion 36 and the inner gripping portion 41, improving the mounting position accuracy of the movement restricting means 30, and the guide pin 20. Smooth movement and retention.

In addition, the provision of the inner gripping portion 41 is preferable because the movement restricting means 30 can be expected to prevent the displacement from the guide groove 21 and displacement.
The distance between the front surface of the fitting member 31 above the restriction portion 32 and the front inner peripheral surface 25 is larger than the distance between the tip of the resistance portion 33 of the restriction portion 32 and the front inner peripheral surface 25, and the guide pin 20 moves. Is formed on the retracting surface 45 that does not contact (FIG. 7).

That is, the guide groove 21 is opened wider than the diameter of the guide pin 20, and the movement restricting means 30 allows the guide pin 20 to move in the guide groove 21 even when the fitting member 31 is fitted in the guide groove 21. The restricting portion 32 of the movement restricting means 30 abuts on the guide pin 20 that protrudes and moves in the guide groove 21 to give resistance to movement.
Therefore, the retraction surface 45 is used to increase the interval between the front surface of the fitting member 31 and the front inner peripheral surface 25 other than the restriction portion 32 of the movement restriction means 30.

Further, since the guide pin 20 does not come into contact with the retracting surface 45, the rear surface (back surface) of the fitting member 31 in the retracting surface 45 is not necessarily in contact with the rear inner peripheral surface 24, and a gap 46 is formed. The fitting operation of the fitting member 31 to the guide groove 21 is facilitated.
The gap 46 is preferable because it can be expected to increase the amount of elastic deformation of the resistance portion 33 of the restriction portion 32 when the guide pin 20 gets over.

Thus, the fitting member 31 faces the upper part of the fitting member 31 up to the upper part in the guide groove 21, and the restriction part 32 is formed also in the upper fitting member 31, so that the upper restriction part is formed. The guide pin 20 is held by 32 and the armrest 4 in the use posture is held.
For this reason, the outer mounting portion 36 is formed at the upper and lower intermediate positions of the fitting member 31 and is formed in a Y-shape that is laterally viewed from the side, so that the movement restricting means 30 is symmetrical, thereby facilitating manufacture and mounting. .

  The guide pins 20 may be protruded laterally from the left and right side plates 50 of the armrest frame 12 and engaged with the guide grooves 21 of the mounting bracket 15, and the configuration thereof is arbitrary. In the embodiment, both ends of the horizontal shaft 51 provided between the left and right side plates 50 of the armrest frame 12 are the guide pins 20 (FIG. 2), and one of the guide pins 20 at both ends has a pin shape. The guide pin 20 is constituted by a bolt 52, and the bolt 52 is screwed to the horizontal shaft 51 or the side plate 50, so that the bolt 52 can be prevented from coming off (FIG. 5).

  In the above embodiment, the guide holding mechanism 16 has the fitting member 31 of the movement restricting means 30 fitted in the guide groove 21. The use posture contact surface 23 is formed at the upper part of the inner periphery of the guide groove 21.

16 and 17 show another embodiment of the movement restricting means 30, and a U-shaped bent portion 55 is formed at the tip of the restricting portion 32.
In the side view, the bent portion 55 overlaps the storage posture contact surface 22 and / or the use posture contact surface 23 of the guide groove 21, the rear inner peripheral surface 24, and the front inner peripheral surface 25. It is configured to protrude inward and contact the outer periphery of the guide pin 20.

Therefore, the shock when the guide pin 20 comes into contact with the storage posture contact surface 22 or the use posture contact portion 23 is improved to improve the operational feeling, and the generation of abnormal noise when the armrest 4 is stopped from rotating. Suppress.
Therefore, the inner peripheral surface 56 of the bent portion 55 also acts as the storage posture contact surface 22 or the use posture contact portion 23 when the guide pin 20 contacts.

  In this case, the inner peripheral surface 56 is positioned slightly inside the storage posture contact portion 22 and the use posture contact portion 23 of the guide groove 21, and the guide pin 20 is placed in the storage posture contact surface 22 or the use posture contact portion 23. A structure that abuts against the inner peripheral surface 56 before abutting on the shock absorber is suitable for improving the effect of suppressing shock absorption and noise generation.

  The guide pin 20 that is in contact with the inner peripheral surface 56 is not necessarily in contact with the retracted posture contact portion 22, but when the bent portion 55 is elastically deformed, the load of the guide pin 20 is stored in the retracted posture contact portion. 22 or the use posture contact portion 23 is preferable because the support of the armrest 4 is ensured.

  In addition, the bent portion 55 absorbs a shock when the guide pin 20 comes into contact with the retracted posture contact portion 22 and / or the use posture contact portion 23, so the bent portion 55 is fitted into the guide groove 21. Although it is not necessary to make it fit, it is preferable that the fitting member 31 of the movement restricting means 30 is prevented from coming off.

FIGS. 18 and 19 show another embodiment of the movement restricting means 30 in which the ends of the upper and lower bent portions 55 are connected by a connecting portion 58.
Therefore, the positioning of the bent portion 55 is facilitated and the attachment of the movement restricting means 30 is facilitated.

Further, the connecting portion 58 suppresses unnecessarily elastic deformation of the bent portion 55 when the guide pin 20 engages and disengages from the restricting portion 32, ensures the reliability of the engagement, and makes the bent portion 55 effective. It is to be operated.
The connecting portion 58 only needs to connect the pair of upper and lower bent portions 55 and abuts on the outer surface of the vertical plate portion 43 of the mounting bracket 15, and does not need to be fitted in the guide groove 21. Good.

  Further, the connecting portion 58 may be substantially coincident with the front inner peripheral surface 25 of the guide groove 21 in a side view, and does not necessarily overlap the guide groove 21 on the rear side of the front inner peripheral surface 25 of the guide groove 21. May be.

(Operation of Example)
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. Holding the tip of 4 and rotating it from one posture to the center of the mounting shaft 11 results in the other posture.

  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 dorsal frame 13, and between the armrest frame 12 and the mounting bracket 15, guide holding that guides the rotation of the armrest 4 and holds the armrest 4 at a predetermined height position (storage posture and use posture). Since the mechanism 16 is provided, the guide holding mechanism 16 guides from one posture to the other posture and is held in that posture.

  The guide holding 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 connected to the mounting shaft 11. Since the storage posture contact portion 22 is formed in 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.

  In the guide groove 21, a movement restricting means 30 for restricting the movement of the guide pin 20 in the guide groove 21 is provided. The movement restricting means 30 includes a fitting member 31 located in the guide groove 21, and the fitting member 31 is formed with at least a restricting portion 32 for restricting the return of the guide pin 20 in contact with the storage posture abutting portion 22 of the guide groove 21, so that the restricting portion of the fitting member 31 of the movement restricting means 30 is formed. 32 holds the armrest 4 in the retracted posture.

  The restriction portion 32 is provided with a resistance portion 33 protruding toward the front inner peripheral surface 25 of the guide groove 21, and a pressing portion 35 that presses the guide pin 20 toward the inner periphery of the guide groove 21 is formed on the front side of the resistance portion 33. Since the concave portion 34 is formed between the resistance portion 33 and the pressing portion 35, when the armrest 4 is rotated upward from the use posture, the guide pin 20 is the resistance portion 33 of the restriction portion 32 of the movement restriction means 30. The guide pin 20 elastically deforms the resistance portion 33 of the restriction portion 32 of the movement restricting means 30 by the operating force, gets over the resistance portion 33, and fits into the recess 34.

The guide pin 20 abuts on the use posture abutting portion 23 of the guide groove 21, and the guide pin 20 is fitted and held in the recess 34 between the resistance portion 33 and the pressing portion 35 and is held on the inner peripheral surface of the guide groove 21. Abut without gaps.
Therefore, the regulation part 32 holds the guide pin 20 elastically and prevents the generation of abnormal noise.

  Further, when the armrest 4 is moved, the guide pin 20 comes into contact with the resistance portion 33 of the restriction portion 32, so that resistance is given to the movement of the guide pin 20, and then the guide pin 20 gets over the resistance portion 33. Since the resistance is further increased, the restriction portion 32 not only prevents the return, but also gives a feeling of completion of the operation to the operator by the resistance when getting over, thereby improving the operability.

Since the guide pin 20 that has passed over the restriction portion 32 fits into the recess 34 (FIGS. 14 and 15), when the guide pin 20 contacts the storage posture contact portion 22 or the use posture contact portion 23 of the guide groove 21. This produces the effect of suppressing the generation of abnormal noise and giving a good operational feeling.
Further, the guide pin 20 that has passed over the restricting portion 32 is pressed against the inner periphery of the guide groove 21 by the elasticity of the restricting portion 32 without any gap, so that the generation of abnormal noise is prevented.

In addition, since the guide pin 20 is pressed against the inner periphery of the guide groove 21 without a gap by the elasticity of the restriction portion 32, the load applied to the armrest 4 is supported by the inner periphery of the guide groove 21, and the movement restricting means 30 is damaged. Can be prevented and durability can be improved.
Further, since the fitting member 31 is fitted in the guide groove 21, it is possible to prevent the movement restricting means 30 from shifting in the left-right direction or the front-rear direction when the guide pin 20 is moved or held. The guide holding mechanism 16 can be operated smoothly and reliably.

Since a contact portion 40 that contacts the rear inner peripheral surface 24 of the guide groove 21 is formed on a part or all of the rear inner peripheral surface 24 side of the fitting member 31, Positioning is performed by an abutment portion 40 that abuts on the side inner peripheral surface 24 and a fixture 37 for attaching the movement restricting means 30.
Therefore, the interval between the front surface of the fitting member 31 and the front inner peripheral surface 25 of the guide groove 21 can be set as set, and the resistance when the fitting member 31 gets over the guide pin 20 and the operation when it gets over. Each operation of feeling and holding of the guide pin 20 can be ensured.

  That is, if the movement restricting means 30 is simply fitted in the guide groove 21, the position may be shifted, and the armrest 4 may not be reliably held due to the position being shifted. In the present application, the fitting member 31 of the movement restricting means 30 is fitted into the guide groove 21, and the outer mounting portion 36 of the movement restricting means 30 is fixed to the mounting bracket 15 by the fixture 37. Attach to position.

  Further, an inner gripping portion 41 that faces the outer mounting portion 36 is formed on the armrest frame 12 side of the fitting member 31, and a fitting groove 42 is formed between the outer mounting portion 36 and the inner gripping portion 41. Since the joint groove 42 is fitted to the vertical plate portion 43 of the mounting bracket 15, the movement restricting means 30 is positioned in the front-rear direction by the contact portion 40 and the mounting tool 37, and the inner gripping portion 41 and the outer mounting portion 36. Thus, the fitting member 31 can be prevented from being displaced in the left-right direction, and can be reliably attached to an appropriate position.

Further, since the inner gripping portion 41 and the outer mounting portion 36 are gripped from the left and right sides, the fitting member 31 is further prevented from coming off.
As a result, the movement restricting means 30 improves the positional accuracy of the guide groove 21 with respect to the front inner peripheral surface 25 and restricts it reliably.
Further, when the movement restricting means 30 is attached by the fixture 37, the abutting portion 40 of the fitting member 31 is elastically deformed when abutting on the rear inner peripheral surface 24 side (outer attaching portion 36 side). It absorbs manufacturing errors such as the shape of 30, the shape of the guide groove 21, or the mounting position of the mounting tool 37, etc.

Further, since the fitting member 31 is located on the rear inner peripheral surface 24 side of the guide groove 21 and is not located on the front inner peripheral surface 25 side, the fitting member 31 is easily attached to the guide groove 21.
That is, since the fitting member 31 is not in contact with the entire inner periphery of the guide groove 21 but is in contact with a part thereof, the fitting operation to the guide groove 21 performed by elastically deforming the movement restricting means 30 is performed. This facilitates and facilitates the movement of the guide pin 20.

Thus, since the fitting member 31 is provided with the outer mounting portion 36 located on the outer surface side of the mounting bracket 15, the movement restricting means 30 fits the fitting member 31 into the guide groove 21 of the mounting bracket 15. The outer mounting portion 36 of the movement restricting means 30 is fixed to the mounting bracket 15 by the mounting tool 37.
Therefore, the fitting member 31 of the movement restricting means 30 can be positioned at a predetermined position in the guide groove 21, and the movement is reliably restricted.

That is, when the movement restricting means 30 is attached, the abutting portion 40 of the fitting member 31 may be brought into contact with the rear inner peripheral surface 24 side and fixed by the fixture 37. Accuracy can be improved.
At this time, if the inner diameter of the mounting hole 38 of the outer mounting portion 36 is larger than the outer diameter of the mounting tool 37, the mounting position of the movement restricting means 30 can be finely adjusted, which is preferable (FIG. 9).

Further, the front surface of the fitting member 31 above the restricting portion 32 has a large gap with respect to the inner peripheral surface 25 on the front side than the restricting portion 32, and is formed on the retracting surface 45 where the moving guide pin 20 does not contact. Switching between the use posture and the storage posture can be performed lightly, the operation force can be reduced, and the operability is improved.
In this case, since the retracting surface 45 is also positioned by the contact portion 40, the distance between the retracting surface 45 and the front inner peripheral surface 25 can be set as set, without giving resistance to the movement of the guide pin 20, Further, the operating force can be reduced with certainty and the operability is improved.

  Further, since the guide pin 20 does not contact the retracting surface 45, the rear surface of the retracting surface 45 does not necessarily need to contact the rear inner peripheral surface 24, and the rear surface (inner surface) of the fitting member 31 and the rear inner peripheral surface. Since the clearance 46 is formed between the clearance 24 and the guide pin 20, the elastic deformation amount (deflection amount) of the resistance portion 33 of the restricting portion 32 when the guide pin 20 gets over can be increased due to the presence of the clearance 46.

  Therefore, the portion of the retracting surface 45 bends due to the presence of the gap 46 behind the retracting surface 45 of the fitting member 31, and when the guide pin 20 of the restricting portion 32 gets over the restricting portion 32 due to the spring effect of the reaction force of this bending. Thus, it is possible to further ensure the respective actions such as the feeling of resistance and the feeling of operation when getting over, and the holding of the guide pin 20 by the restriction portion 32.

Therefore, the movement restricting means 30 is provided with a pair of upper and lower restricting portions 32 on the fitting member 31, and the guide pin 20 abuts against the restricting portion 32 of the fitting member 31 even in the use posture. Gives a feeling and keeps it in a good posture.
Thus, the armrest 4 in the retracted position is held in the retracted position in a normal traveling state because the guide pin 20 is held by being fitted into the recess 34 between the resistance portion 33 and the pressing portion 35 of the restriction portion 32. Yes.

  Next, when tilted forward from the retracted posture, the guide pin 20 elastically deforms the resistance portion 33 of the restriction portion 32 of the movement restricting means 30 by the operating force, and the guide pin 20 gets over the resistance portion 33 and separates from the recess 34. When the armrest 4 approaches a predetermined position above the upper surface of the seat 2, the guide pin 20 comes into contact with the resistance portion 33 of the restriction portion 32 of the movement restriction means 30 at the upper part in the guide groove 21. Resistance is given to the movement, and the guide pin 20 gets over the resistance portion 33 and fits into the recess 34 to be held in a use posture.

Accordingly, in another embodiment of the movement restricting means 30 of FIGS. 16 and 17, the substantially pin-shaped bent portion 55 is formed at the tip of the restricting portion 32, so that the guide pin 20 is in the retracted posture contact portion. The shock at the time of contacting 22 is absorbed to improve the operational feeling, and the generation of abnormal noise when the armrest 4 is stopped from rotating is suppressed.
That is, when the bent portion 55 is formed so as to overlap the storage posture contact portion 22 or the use posture contact portion 23 of the guide groove 21 and project into the guide groove 21 in a side view, the guide pin 20 is bent first. 55, and further absorbs shock to suppress the generation of abnormal noise.

Further, in another embodiment of the movement restricting means 30 shown in FIGS. 18 and 19, since the tips of the upper and lower bent portions 55 are connected by the connecting portion 58, the fitting member 31 is fitted in the guide groove 21. This facilitates the attachment of the movement restricting means 30.
That is, like the movement restricting means 30 in FIGS. 18 and 19, the tips of the upper and lower bent portions 55 are connected by the connecting portion 58 to form a ring shape, and all the ring-shaped portions are placed in the guide groove 21. With the configuration of fitting, the entire movement restricting means 30 is distorted due to manufacturing errors between the ring-shaped portion and the guide groove 21 and the mounting position accuracy is lowered. However, the movement restricting means 30 guides the fitting member 31. If it is configured to fit in the groove 21, the mounting position accuracy is not lowered.

Moreover, since the connection part 58 connects the front-end | tip of the upper and lower bending parts 55, the elastic deformation more than necessary of the bending part 55 is suppressed, the reliability of engagement holding is ensured, and the bending part 55 is operated effectively.
In the embodiment, for easy 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 ... retracted posture abutting portion, 23 ... use posture abutting portion, 24 ... rear inner peripheral surface, 25 ... front inner peripheral surface, 30 ... movement restricting means, 31 ... Fitting member 32 ... restricted part 33 ... projection part 34 ... concave part 35 ... pressing part 36 ... outer attachment part 37 ... attachment tool 40 ... contact part 41 ... inner gripping part 42 ... fitting Groove, 43 ... vertical plate portion, 45 ... retracting surface, 46 ... gap, 50 ... side plate, 51 ... horizontal axis, 52 ... bolt.

Claims (8)

The armrest 4 is attached to the backrest seat 3 so as to be rotatable about the attachment shaft 11 between the standing storage posture and the use posture located above the upper surface of the seat 2, and the armrest frame 12 and the backrest of the armrest 4. A guide holding mechanism 16 that holds at least the armrest 4 in a retracted posture is provided between the frame 13 and the mounting bracket 15, and the guide holding mechanism 16 is centered on the mounting shaft 11 provided on the armrest frame 12. It has a guide pin 20 that moves in an arc and a guide groove 21 provided in the mounting bracket 15 to which the guide pin 20 moves, and the guide pin 20 moves in the guide groove 21 when the armrest 4 is in the retracted position. The movement restriction means 30 is provided for restricting and holding the movement, and the movement restriction means 30 is fitted in the guide groove 21. When Idopin 20 contacts the engagement member 31 having a restriction site 32 for holding by elastic deformation, the vehicle seat which is constituted by an outer mounting portion 36 for mounting to the mounting bracket 15. 2. The guide groove 21 according to claim 1, wherein the guide shaft 21 includes an arcuate one-side inner circumferential surface 24 and the other inner circumferential surface 25 centered on the mounting shaft 11, and a storage posture contact portion 22 on the inner circumference of the guide groove 21. In the retracted posture of the armrest 4, the guide pin 20 abuts against the movement restricting means 30 and the inner periphery of the guide groove 21 or only the movement restricting means 30. A vehicle seat configured to abut. In Claim 1 or Claim 2, at least one said restriction | limiting part 32 is provided in the predetermined position of the said fitting member 31, and this restriction | limiting part 32 faces the other side inner peripheral surface 25 of the said guide groove 21. As shown in FIG. A pressing portion 35 that has a protruding resistance portion 33 and that presses the guide pin 20 toward the inner peripheral surface of the guide groove 21 is formed in the restriction portion 32 on the storage posture contact portion 22 side of the resistance portion 33. And the vehicle seat which formed the recessed part 34 between the said resistance part 33 and the said press part 35. FIG. In claim 1 or claim 2 or claim 3, on a part or all of the fitting member 31 of the movement restricting means 30 fitted in the guide groove 21 on the side of the outer attachment portion 36 attached to the attachment bracket 15. Is a vehicle seat in which a contact portion 40 that contacts the inner peripheral surface of the guide groove 21 on the outer mounting portion 36 side is formed. 5. The vehicle seat according to claim 4, wherein the contact portion 40 is provided on the outer attachment portion 36 side of the restriction portion 32. 6. The vehicle seat according to claim 5, wherein the restriction part 32 is provided on both upper and lower sides of the fitting member 31 fitted in the guide groove 21. In claim 1 or claim 2 or claim 3 or claim 4 or claim 5 or claim 6, the tip of the restricting portion 32 overlaps with the inner periphery of the guide groove 21 in a side view and the retracted position is matched. A vehicle seat having a substantially C-shaped bent portion 55 protruding inward from the contact portion 22 and / or the use posture contact portion 23. 8. The vehicle seat according to claim 7, wherein the bent portion 55 is provided at each of the upper and lower ends of the restriction portion 32 at the upper and lower ends of the fitting member 31, and the ends of the upper and lower bent portions 55 are connected by a connecting portion 58.

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