JPH04138349U - Armrest locking mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] A vehicle seat in which a recess extending in the vertical direction is formed in the seat back, and an armrest is pivoted to an armrest bracket in the recess so that the armrest can be pulled out and stored around a pivot shaft at the lower end of the armrest. To prevent the armrest from unexpectedly popping out in the event of an impact. [Structure] A rotation stopper is formed at the end of the pivot shaft, a bearing mounting hole is formed in the armrest bracket, and a bearing having a shaft support groove is rotatably supported in the bearing mounting hole. A notch is formed in the upper part that can lock the rotation stopper at the end of the pivot shaft when the armrest is stored in a predetermined state, and when the armrest is stored, the rotation stopper at the end of the pivot shaft is moved by the biasing force of the spring member. is inserted into the notch to lock the armrest, while at the same time, when the armrest is pushed downward, the end rotation stopper of the pivot shaft slides into the shaft support groove of the bearing against the biasing force of the spring member. , thereby making the pivot shaft rotatable.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to the locking mechanism of the armrest, especially when the armrest is pulled out and stored. The armrest of a vehicle seat that is equipped so that it can be stowed will pop out due to an impact. It relates to a mechanism that can prevent this.

0002

[Conventional technology]

Recently, various proposals have been made to improve the comfort inside the car interior. ing.

0003 For example, for car seats, there is a forming a recess extending in the direction, and pulling the armrest into the recess around its lower end; ・It pivots so that it can be stored, and when three people are on the rear seat, the armrest can be attached to the seat. It can be stored in the passenger compartment so that three passengers can sit comfortably, while two passengers can be seated comfortably. The armrests can be pulled out to allow passengers to sit in a comfortable position when riding the vehicle. A sheet structure is known.

0004

[Problem that the idea aims to solve]

However, in the conventional seat structure described above, the inner surface of the recess of the seat back and the armrest The armrest is in close contact with the outer surface of the seatback, or the Since I was trying to hold the car in the If there is a collision and impact force is applied to the armrest, the armrest will fly forward. It is said to be cumbersome and undesirable, such as having to put it away and push it back into its original storage state by hand. There was a problem.

[0005] A way to solve this problem is to install a locking mechanism on the armrest. However, in this case, the unlocking operation of the locking mechanism and the area around the armrest should be improved. Due to the limited layout space, how to construct the locking mechanism is important. It is.

[0006] In view of this, this invention prevents the armrest from suddenly popping out during an impact. A simple and compact armrest locking mechanism that reliably prevents The challenge is to provide.

[0007]

[Means to solve the problem]

Therefore, the locking mechanism of the armrest according to the present invention is designed to be attached to the seat back in the vertical direction. forming an extending recess and attaching the armrest to the armrest bracket within the recess; In a vehicle seat that is pivoted around a lower end pivot shaft so that it can be pulled out and stored, the above-mentioned pivot A rotation stopper is formed at the end of the support shaft, and a bearing mounting hole is formed in the armrest bracket above. The bearing mounting hole rotatably supports a bearing having a shaft support groove. , At the top of the bearing hole, the rotation stopper is installed when the armrest is in the specified storage state. A lockable notch is formed around the end of the pivot shaft when the armrest is stored. The stop part is inserted into the notch by the biasing force of the spring member, and the armless while the end of the pivot shaft is locked when the armrest is pushed downward. Slide the detent part into the shaft support groove of the bearing against the biasing force of the spring member and lift it up. The gist is that the pivot shaft is rotatable.

[0008] Depending on the type of spring member, when the armrest is pulled out, it may be difficult to store it in the armrest. A biasing force may be applied to the side of the bearing mounting hole. It is preferable to form a notch with the same structure as the upper part and to lock the pivot shaft.

[0009]

[Effect]

When the armrest is in the stored state, the end rotation stopper of the armrest pivot shaft is It is fitted into the notch at the top of the bearing mounting hole by the biasing force of the spring member. Kaka In this state, the rotation of the pivot shaft is prevented and the armrest is locked. Even if an impact force is applied to the armrest due to sudden braking or a collision, the armrest will not move. It doesn't jump forward.

0010 On the other hand, when pulling out the armrest, pushing the armrest downward will release the pivot point. The rotation stopper at the end of the support shaft slides downward against the biasing force of the spring member, and the bearing is mounted. It separates from the notch at the top of the hole and fits into the shaft support groove of the bearing, thereby securing the pivot shaft. is supported by a bearing and can rotate, so all you have to do is pull out the armrest. good.

[0011] In this way, in this invention, when the armrest is in the retracted state, the armrest is Lock the end of the pivot shaft in the notch in the bearing mounting hole, and when pulling out Push in the armrest and slide the end of the pivot shaft into the bearing shaft support groove to lock it. Since the lock is released, there is no need for complicated unlocking operations, and the device The structure is simple and compact, and the layout space is small.

0012

【Example】

Hereinafter, the present invention will be explained in detail based on specific examples shown in the drawings. Figures 1 to 5 1 shows an armrest locking mechanism according to an embodiment of the present invention. In the figure, the passenger compartment Driver side seat F1, passenger side seat F2 and rear seat R are arranged on the floor. Each seat F1, F2, R is composed of a seat cushion 3 and a seat back 4. has been completed.

[0013] In the above rear seat R, a recess 40 is provided in the center of the seat back 4 in the upper and lower directions. The armrest 5 is formed to extend in the direction, and the armrest 5 is pulled around the lower end of the recess 40 . The armrest 5 is pivoted so that it can be taken out and stored, and the armrest 5 has a A locking mechanism 6 is provided.

[0014] Here, the structures of the armrest 5 and the lock mechanism 6 will be explained in detail. above arm The rest 5 has a cushion member (for example, urethane foam) and an armrest in the epidermis. The armrest frame has a hinge shaft. 50 and a guide pin 51 are attached to both ends of the hinge shaft 50. A rotation stop portion 52 having a square shape is formed.

[0015] Armrest brackets 5 are also provided on both sides of the recess 40 of the seat back 4. 3 is fixed, and the armrest bracket 53 has a substantially circular bearing mounting hole 54 and A generally arcuate guide groove 55 is bored, and the guide pin 51 is inserted into the guide groove 55. is slidably inserted.

[0016] Further, the bearing mounting hole 54 has a substantially circular bearing 57 having a shaft support groove 56. is rotatably supported, and in the bearing 57, a substantially circular stepped portion is formed from one side of the bearing mounting hole 54. The bearing body 58 having a The two are screwed together and connected by a screw 510, and a shaft support groove 56 is provided with a shaft support groove 56. The locking portion 52 of the hinge shaft 50 can be slidably inserted into the hinge shaft 50. ing.

[0017] Further, the hinge shaft 50 is provided at the upper and side portions of the bearing mounting hole 54. A notch 511 into which the rotation stopper 52 can be slidably inserted is formed, and the There are also notches at both ends of the guide groove 55 into which the guide pin 51 can be slidably inserted. 512 is formed upward and toward the front.

[0018] Further, a screw hole 5 is provided near the bearing mounting hole 54 of the armrest bracket 53. 13 is formed, and a spring 515 is attached to the screw hole 513 with a screw 514. One end of the spring 515 is attached to the protrusion 516 below the screw hole 514. The other spring 514 is secured to the hinge shaft by a screw 517. The hinge shaft 50 is locked to the end surface of the rotation stopper 52, thereby preventing the rotation of the hinge shaft 50. The stop portion 52 is located in the notch of the bearing mounting hole 54 at the storage position and the pull-out position of the armrest 5. 511.

[0019] Next, the effects will be explained.

[0020] In the rear seat R, the armrest 5 is placed in the recess 40 in the center of the seat back 4. When stowed, the seatback 4 of the rear seat R becomes wider, allowing the three passengers to comfortably sit. The armrest 5 can be pulled out from the recess 40 of the seat back 4. When the armrest 5 is rotated forward around the hinge shaft 54, The two occupants are able to maintain a comfortable posture by using the armrest 5. Can be seated.

[0021] At this time, when the armrest 5 is in the stored state, the hinge The locking portions 52 at both ends of the shaft 50 are fitted into the bearing mounting hole by the biasing force of the spring 515. The hinge shaft 50 is fitted and held in the upper notch 511 of the At the same time, the guide pin 51 is fitted into the upper end notch 512 of the guide groove 55. The armrest 5 is held in the seat bar and prevented from sliding. It is locked in the stored state in the lock recess 40. In such conditions, the car Even if an impact force is applied to the armrest 5 due to sudden braking or the vehicle body collides with an obstacle, The armrest 5 does not protrude forward.

[0022] In addition, when pulling out the armrest 5 from such a storage state, the armrest When the rotation stopper 52 of the hinge shaft 50 is pushed down a little, the spring 5 The upper notch 511 of the bearing mounting hole 54 slides downward against the urging force of the bearing mounting hole 54. It comes off from the shaft and fits into the shaft support groove 56 of the bearing 57, and the hinge shaft 50 rotates. At the same time, the guide pin 51 also extends from the upper end notch 512 to the guide groove 55. It can be removed and slid. After that, just pull the armrest 5 forward, As the bearing 57 of the hinge shaft 50 rotates, the guide pin 51 moves into the guide groove. 55, and the armrest 5 is thus pulled out.

[0023] When the armrest 5 is pulled forward, both ends of the hinge shaft 50 are locked. The fitting portion 52 is pushed into the shaft support groove 56 of the bearing 57 by the biasing force of the spring 515. slide into the side notch 511 of the bearing mounting hole 54 and fit into the notch 511. At the same time, the guide pin 51 is inserted into the lower end notch 512 from the guide groove 55. The armrest 5 is slid into and held in place, and the armrest 5 is locked into the drawn-out state as shown in FIG. Since the armrest 5 is locked, the armrest 5 can be used stably.

[0024] When storing the armrest 5 from such a pulled out state, the armrest 5 Push the button slightly backwards to release the lock, then press the button inside the recess 40 of the seat back 4. Just push it into.

[0025] In the armrest locking mechanism of this embodiment as described above, the hinge shaft 50 52 into the upper notch 511 of the bearing 57, and guide the guide pin 51 into the upper notch 511 of the bearing 57. The upper end notch 512 of the door groove 512 locks the armrest 5 in the stored state. This prevents the armrest 5 from accidentally popping out, and the armrest This eliminates the trouble of manually pushing the tray 5 back into its original storage state.

[0026] Furthermore, in the armrest locking mechanism of this embodiment, the end of the hinge shaft 50 The rotation stopper 52 is placed in the side notch 511 of the bearing 57, and the guide pin 51 is placed in the guide groove 5. 12, respectively, to lock the armrest 5 in the drawn-out state. Since the armrest 5 can be stably held in the pulled out state, the armrest The user experience can be improved.

[0027] Furthermore, in the armrest locking mechanism of this embodiment, the axis of the hinge shaft 50 is Since the armrest 5 is locked using the receiving structure, the structure of the mechanism is simplified. Moreover, it can be configured compactly and the layout can be easily made.

[0028] In addition, in the armrest locking mechanism of this embodiment, the armrest 5 is moved slightly downward. Alternatively, the lock can be released by pushing it backwards, making it a hassle to unlock. The armrest 5 can be easily pulled out and stored without any operation.

[0029]

[Effect of the idea]

As described above, according to the armrest locking mechanism of the present invention, the seatback A recess is formed in the bracket that extends vertically, and the armrest bracket is attached to the armrest bracket within the recess. A vehicle seat in which a mulrest is pivoted around a pivot shaft at its lower end so that it can be pulled out and stored. Then, form a rotation stopper at the end of the pivot shaft, and attach it to the armrest bracket. A bearing mounting hole is formed, and a bearing having a shaft support groove is rotatably supported in the bearing mounting hole. At the same time, the above-mentioned armrest is placed in the specified storage state in the upper part of the above-mentioned bearing hole. A cutout is formed that can lock the rotation stopper, and when the armrest is stored, the rotation stopper can be locked. Fit the rotation stopper at the end of the support shaft into the notch using the biasing force of the spring member. While locking the above armrest, when pushing the above armrest downward Slide the end rotation stopper of the above pivot shaft into the shaft support groove of the bearing against the biasing force of the spring member. Since the above-mentioned pivot shaft can be rotated by riding, the complicated unlocking operation is eliminated. Reliably prevents the armrest from accidentally popping out in the event of an impact, without having to do any work. Moreover, the locking mechanism has a simple structure and is compact, so it can be laid out in a small space. It has a soothing effect.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view of an automobile seat equipped with an armrest locking mechanism according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a pulled out state of the armrest on the rear seat.

FIG. 3 is an exploded perspective view showing the locking mechanism.

FIG. 4 is a side view showing the locking mechanism.

FIG. 5 is a side view for explaining the operation of the locking mechanism.

[Explanation of symbols]

4 Seat back 40 recess 5 Armrest 50 Hinge shaft 52 Stop part 54 Bearing mounting hole 56 Shaft support groove 57 Bearing 511 Notch 515 Spring 6 Lock mechanism

Claims (1)

[Scope of utility model registration request] 1. A vehicle in which a recess 40 extending in the vertical direction is formed in the seat back 4, and an armrest 5 is pivoted to an armrest bracket 53 in the recess 40 around a lower pivot shaft 50 so as to be able to be pulled out and stored. In the seat, a rotation stopper 51 is formed at the end of the pivot shaft 50, a bearing mounting hole 54 is formed in the armrest bracket 53, and a shaft support groove 56 is formed in the bearing mounting hole 54. A bearing 57 is rotatably supported, and the bearing hole 5
4 is formed with a notch 511 that can lock the rotation stopper 51 when the armrest 5 is in a predetermined stored state, and when the armrest 5 is stored, the end rotation stopper 51 of the pivot shaft 50 can be locked. The armrest 5 is locked by being fitted into the notch 511 by the biasing force of the spring member 515, while the end detent portion 51 of the pivot shaft 50 is locked by the spring member when the armrest 5 is pushed downward. A locking mechanism for an armrest, characterized in that the pivot shaft 50 is slid into a shaft support groove 56 of a bearing 54 against the biasing force of the armrest 515 so that the pivot shaft 50 can rotate.