JPH04361707A - Arm rest mounting structure - Google Patents

Abstract

PURPOSE:To simplify the arm rest mounting process and suppress the production costs. CONSTITUTION:The base of an arm rest 4 protruding ahead is installed rotatably on a mounting shaft 7 provided at the side of a seat back 3. A sector gear 8 is fixed to the mounting shaft 7. The arm rest 4 is fitted with a lock gear 14 meshing with the sector gear 8 with possibility of disengagement and with an operation knob 25 which rotates the lock gear 14. The sector gear 8 is installed on the mounting shaft 7 so as to be mating with this lock gear 14 when the neutral position is set where the seat back 3 is fixed to the seat bottom 2 and when the arm rest 4 is put in the position approx. in parallel with the seat bottom 2.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an armrest mounting structure.

0002

[Prior Art] Conventionally, although there is no known publication, a mounting shaft that projects laterally is provided on the side of the backrest seat of a vehicle seat, and a base of an armrest that projects forward is rotatably provided on the mounting shaft. , a sector gear is fixed to the mounting shaft, and a lock gear that connects to and detaches from the sector gear and an operation knob that rotates the lock gear are provided on the armrest side so that the angle can be adjusted, wherein the sector gear is fixed in advance. The seat back is fixed to the mounting shaft of the seat back, and the seat back has several types of sector gears with different mounting angles, and corresponds to the lock gear when the armrest is placed parallel to the seat depending on the vehicle model. It is known that a back seat having a sector gear can be selectively attached to a seat.

0003

SUMMARY OF THE INVENTION The problem with the above-mentioned known systems is that they must be manufactured with different attachment angles of the sector gear relative to the backrest seat for each vehicle model. That is, as shown in FIGS. 5 and 6, the inclination of the neutral position of the backrest seat with respect to the seat (the inclination angle at which it is first assembled to the seat in relation to the position of the steering wheel and operation pedals) is , differs depending on the vehicle type (for example, sedan type or van type).
The direction of the sector gear, which is integral with the back seat, changes depending on the inclination of the back seat, so if the armrest is attached as is, the armrest will not be approximately parallel to the seat. Therefore, several types of backrest sheets were prepared with different mounting angles of sector gears, and the appropriate backrest sheet was selected when attaching the backrest sheet to the seat. Therefore, many types of backrest seats differing only in the mounting angle of the sector gears are produced, resulting in high costs and troublesome assembly.

0004

OBJECTS OF THE INVENTION The present invention allows armrests to be easily attached to seat backs that have different inclinations at neutral positions relative to the seats.

[0005]

[Means for Solving the Problems] Accordingly, the present invention provides a mounting shaft 7 that projects laterally on the side of the backrest sheet 3 provided at the rear of the seat 2, and a mounting shaft 7 that projects forwardly on the mounting shaft 7. The base of the armrest 4 is rotatably provided, a sector gear 8 is fixed to the mounting shaft 7, and a lock gear 14 connected to and detached from the sector gear 8 and an operation knob 25 for rotating the lock gear 14 are provided on the armrest 4 side. In the case where the armrest 4 is provided so that the angle of the armrest 4 can be adjusted, the sector gear 8 is in a neutral position where the backrest sheet 3 is attached to the seat sheet 2, and when the armrest 4 is in a neutral position with respect to the seat sheet 2. When the mounting shaft 7 is in a substantially parallel state, the mounting shaft 7 is aligned so as to correspond to the lock gear 14.
This is a mounting structure for an armrest that can be attached to.

[0006]

[Example] Examples of the present invention will be explained with reference to the drawings.
2 is a vehicle seat; 2 is a seat of the vehicle seat 1; 3 is a backrest seat attached to the rear of the seat 2 with a predetermined angle of inclination; and on the sides of the backrest seat 3; An armrest 4 that projects forward is provided. The back seat 3 is attached to the seat 2 so as to be rotatable in the front and rear directions, and its inclination can be freely adjusted. For convenience, the following explanation will be based on the inclination when assembled and before adjustment.

Reference numeral 5 designates a skeleton frame of the backrest seat 3. A plate-shaped bracket 6 in the front and back direction is fixed to the side of the skeleton frame 5, and the base of the mounting shaft 7 in the left and right direction is fixed to the side part of the frame frame 5. is fixed, and a sector gear 8 is fixed to the mounting shaft 7.

Reference numeral 9 denotes a frame of the armrest 4, and a left and right shaft cylinder 10 is fixed to the base of the frame 9.
The shaft tube 10 is inserted into the mounting shaft 7, and the bolt 11 is screwed onto the mounting shaft 7 protruding outward from the shaft tube 10.
Attach frame 9 to. Note that the bolt 11 is connected to the shaft cylinder 10.
It is tightened so as not to interfere with the rotation of the frame 9.

Reference numeral 12 denotes a notch formed on the inner surface of the base side of the frame 9, in which the sector gear 8 is positioned. An opening 13 is formed in the frame 9 facing the notch 12. Reference numeral 14 denotes a lock gear that engages with the sector gear 8, and its upper and lower middle portions are fixed to the frame 9 by a shaft 15. A lock pawl 16 is formed on the lower rear surface of the lock gear 14, and the lock pawl 16 projects from the opening 13 into the notch 12 and meshes with the sector gear 8, so that the armrest 4 is positioned relative to the backrest seat 3. Fix it.

Reference numeral 18 denotes a rod that constitutes a part of the link mechanism 17 that rotates the lock gear 14.
The front end of 8 is pivoted to the tip of a rotating arm 19, and the rotating arm 19 is rotatably attached to the frame 9 via a vertical shaft 20. A spring 21 biases the lock gear 14 in the direction of meshing with the sector gear 8.

Reference numeral 25 denotes an operation knob for operating the lock gear 14, and is slidably fitted into a left-right shaft cylinder 26 provided on the front side of the frame 9. The operating knob 25 is formed with a cylindrical portion 27 that protrudes inward, and a cam portion 28 is formed inside the cylindrical portion 27. The cam portion 28 on the operation knob 25 side is formed to have a larger diameter than the shaft cylinder 26, and the inner surface of the cam portion 28 is formed into a conical shape that becomes narrower toward the inside. The operation knob 25 is integrally formed with the shaft cylinder portion 27 and the cam portion 28 from synthetic resin, and an insertion hole 29 is formed at the center of the operation knob 25 in the sliding direction, and the insertion hole 29 is inserted into the frame 9. The operating knob 25 is inserted into the fixed horizontal mounting shaft 30 in the left and right direction, and the operating knob 25 is always attached to the back seat 3 on the outer periphery of the horizontal mounting shaft 30.
A spring 31 is provided to bias the device to the side.

The cam portion 28 of the operating knob 25 is brought into contact with the front surface 32 of the rotating arm 19, and the front surface 32 is bent into a dogleg shape when viewed from above so that the middle portion protrudes forward. The cam portion 28 pushes the front surface 32 of the rotating arm 19 to convert the horizontal movement of the operating knob 25 into a longitudinal movement by rotating the rotating arm 19 about the vertical axis 20. , the rod 18 is pushed by the rotating arm 19 to rotate the lock gear 14, and the lock pawl 16 is separated from the sector gear 8.

[0013] Therefore, the mounting shaft 7 has a
Different diameter part 3 having a flat part 33 formed by cutting out a part of
4, a modified insertion hole 36 having an engagement surface 35 corresponding to the flat portion 33 is formed in the sector gear 8, and the modified insertion hole 36 of the sector gear 8 is inserted into the different diameter portion 34 of the mounting shaft 7. Install it. In this case, several types of sector gears 8 are manufactured in advance in which modified insertion holes 36 are formed in different positions of the engaging surfaces 35, and the sector gears 8 are selectively selected from the mounting shaft 7.
Fixed to.

That is, the angle of inclination of the seat back seat 3 at the predetermined neutral position with respect to the seat 2 differs depending on the type of vehicle in which it is mounted, and the seat back 3 has a neutral position with a steep inclination from the beginning, and a vehicle seat 1 with a gentle inclination. (Fig. 5)
, Fig. 6), the flat part 33 of the different diameter part 34 of the mounting shaft 7 always forms the same angle with respect to the frame frame 5, but the orientation with respect to the seat 2 differs depending on the inclination of the frame frame 5.
In the backrest seat 3 which initially has a steep slope at the neutral position, the flat part 33
faces upward (FIGS. 6 and 7), and faces forward in the case of the back seat 3 with a gentle slope (FIGS. 5 and 8).

On the other hand, since the armrest 4 is installed so as to be substantially parallel to the seat 2 regardless of the inclination of the backrest 3 with respect to the seat 2, the direction of the sector gear 8 with which the lock gear 14 of the armrest 4 meshes also matches the direction of the armrest 4. It will be made to correspond to That is, if the direction of the sector gear 8 is not made to correspond to the lock gear 14, the armrest 4
The range in which the angle can be adjusted becomes narrower.

Therefore, in order to correspond to the armrest 4, several types of sector gears 8 having deformed insertion holes 36 with different positions of the engagement surfaces 35 are prepared in advance, and in a state that corresponds to the armrest 4, different types of sector gears 8 of the mounting shaft 7 are prepared. Select the sector gear 8 that matches the diameter portion 34 and insert it into the mounting shaft 7 (Fig. 7
, Figure 8). Note that the relationship between the mounting shaft 7 and the sector gear 8 may be reversed.

FIG. 9 shows another embodiment, in which a groove 37 parallel to the generatrix direction is formed on the outer periphery of the mounting shaft 7, and a star-shaped insertion hole 38 corresponding to the groove 37 is formed in the sector gear 8. The insertion hole 38 is engaged with the groove 37 of the mounting shaft 7 at a mounting angle corresponding to the inclination angle of the back seat 3 and the lock gear 14 of the armrest 4, and is fixed. Further, around the insertion hole 38 of the sector gear 8, a mark 39 is formed to indicate the mounting position depending on the vehicle type.

[0018]

[Effect] Next, the effect will be described. The present invention has the above-mentioned configuration, and the mounting shaft 7 having the different diameter portion 34 is fixed to the bracket 6 of the skeletal frame 5, and a cushioning material and a skin are attached to the skeletal frame 5 in this state to manufacture a large number of backrest seats 3. Then, on the other hand, a cushion material and a skin are attached to the frame 9, and a large number of armrests 4 are manufactured separately. Next, the back seat 3 is attached to the rear of the seat 2 so as to be rotatable in the front and back direction, the sector gear 8 is fixed to the mounting shaft 7 on the side of the back seat 3, and the armrest 4 is attached to the mounting shaft 7. assembly is completed.

In this case, although the inclination of the back seat 3 with respect to the seat 2 differs depending on the vehicle type in which it is mounted, the armrest 4 is attached to the back seat 3 so that it is approximately parallel to the seat 2. lock gear 1
The orientation of the sector gear 8 that meshes with the sector gear 4 must also correspond to the armrest 4. However, in order to correspond to the armrest 4, the direction of the backrest seat 3 with a different mounting angle position of the sector gear 8 must be adjusted to correspond to the armrest 4.
Several types of backrest seats 3 are prepared in advance, selected appropriately to correspond to the armrest 4, and attached to the seat 2. Conventionally, backrest seats 3 were formed separately depending on the type of vehicle.

In the present invention, since the sector gear 8 is separately formed with several types of deformed insertion holes 36 having different positions of the engagement surfaces 35, this sector gear 8 can be selected as appropriate to correspond to the armrest 4. When fixed to the mounting shaft 7, the armrest 4 can be mounted so that it is substantially parallel to the seat 2 even if the seat backrest 3 is mounted at a different angle depending on the vehicle type.

When the operating knob 25 is pushed, the operating knob 25 is guided inside the shaft cylinder 26 by the mounting horizontal shaft 30 and is moved by the spring 3.
1, the cam part 28 provided inside the operating knob 25 moves inward together with the operating knob 25, and the movement of the cam part 28 pushes the rotating arm 19 rearward. Here, the left-right movement of the operating knob 25 is converted into a back-and-forth movement, the rotating arm 19 rotates rearward about the vertical axis 20, and the rotation of the rotating arm 19 causes the rod 18 to move rearward and engage the lock gear. Push the top of 14 backwards and lock gear 14
rotates around the shaft 15 and locks the lock claw 1 of the lock gear 14.
6 is removed from sector gear 8.

When the lock claw 16 of the lock gear 14 is disengaged from the sector gear 8, the frame 9 becomes free with respect to the mounting shaft 7, so the inclination angle can be adjusted by moving the tip of the armrest 4 up and down to a desired position.

Further, after adjusting the angle, when you release your finger from the operating knob 25, the operating knob 25 is moved by the elasticity of the spring 31 to the shaft cylinder 26.
The side surface of the cam part 28 comes into contact with the end of the shaft cylinder 26, and the operating knob 25 returns to its original position, and the cam part 2
8 moves outward, the rotating arm 19 by the cam portion 28
Since the pressure is released, the lock gear 14 rotates due to the elasticity of the spring 21, and the lock pawl 16 rotates and engages with the sector gear 8, fixing the armrest 4 and locking the lock gear 1.
4, the rod 18 moves forward and rotates the rotating arm 1.
Return 9 to its original position.

[0024]

[Effect] The present invention provides a mounting shaft 7 that projects laterally on the side of the backrest 3 provided at the rear of the seat 2, and rotates the base of the armrest 4 that projects forward on the mounting shaft 7. A sector gear 8 is fixed to the mounting shaft 7, and a lock gear 14 connected to and detached from the sector gear 8 and an operation knob 25 for rotating the lock gear 14 are provided on the armrest 4 side to adjust the angle of the armrest 4. In the adjustable sector gear 8, the sector gear 8 is arranged so that the armrest 4 is in a neutral position when the backrest 3 is attached to the seat 2, and the armrest 4 is in a substantially parallel state to the seat 2. Since the armrest is attached to the mounting shaft 7 to correspond to the lock gear 14, depending on the vehicle type, when the backrest seat 3 is attached to the seat 2 at the preset neutral position. Even if the inclination is different, the armrest 4 can be attached to any backrest seat 3 at the optimum angle by simply fixing the sector gear 8 to the mounting shaft 7 so that the armrest 4 is approximately parallel to the seat 2. In addition, since there is no need to produce several types of backrest seats 3 depending on the vehicle model, costs can be reduced and inventory management is easy.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a vehicle seat.

[Fig. 2] A perspective view of the assembled state.

[Figure 3] Cross-sectional plan view of main parts.

[Fig. 4] A perspective view of the main parts.

FIG. 5 is a side view of the vehicle seat.

FIG. 6 is a side view of the vehicle seat.

FIG. 7 is a side view of the sector gear of the back seat with a gentle slope.

FIG. 8 is a side view of the sector gear of the steeply sloped back seat.

FIG. 9 is a diagram of a second embodiment.

[Explanation of symbols]

1...vehicle seat, 2...seat sheet, 3...backrest sheet,
4... Armrest, 5... Skeletal frame, 6... Bracket, 7... Mounting shaft, 8... Sector gear, 9... Frame, 10...
Shaft cylinder, 11... Bolt, 12... Notch, 13... Opening, 1
4...Lock gear, 15...Shaft, 16...Lock claw, 17...Link mechanism, 18...Rod, 19...Rotating arm, 20...Vertical shaft, 21...Spring, 25...Operation knob, 26...Shaft cylinder, 27...
Shaft tube part, 28...Cam part, 29...Insertion hole, 30...Mounting horizontal shaft, 31...Spring, 32...Front surface, 33...Plane part, 34...Different diameter part, 35...Engaging surface, 36...Deformed insertion hole , 37...Groove, 38
...Insertion hole, 39...mark.

Claims (1)

[Claims] Claim 1: A mounting shaft 7 projecting laterally is provided on the side of the backrest 3 provided at the rear of the seat 2, and the base of the armrest 4 projecting forward is rotatably attached to the mounting shaft 7. A sector gear 8 is fixed to the mounting shaft 7, and a lock gear 14 connected to and detached from the sector gear 8 and an operation knob 25 for rotating the lock gear 14 are provided on the armrest 4 side to adjust the angle of the armrest 4. In the configuration, when the sector gear 8 is in a neutral position where the backrest 3 is attached to the seat 2 and the armrest 4 is in a substantially parallel state to the seat 2. , an armrest mounting structure that is attached to the mounting shaft 7 so as to correspond to the lock gear 14;