JP3274415B2 - Armrest detachable structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detachable structure of an armrest provided on a side portion of a seat back.

[0002]

2. Description of the Related Art Some armrests attached to the side portions of a seat back have a structure that can be removed when not in use. This type of detachable armrest has a shaft hole on the seatback side into which a shaft pin of the armrest is inserted, and a locking means for engaging and releasing with the shaft pin is provided in the shaft hole. . That is, when used, the shaft pin is rotatably supported in a locked state that prevents the shaft pin from coming off, and when not in use, the lever of the locking means is operated to release the locked state of the shaft pin, and the armrest can be removed. I have.

[0003]

However, in such a conventional technique, since a complicated locking mechanism must be built in the shaft hole of the seat back, the manufacture of the seat back becomes complicated. Also, if you do not operate the lock function lever, you can not attach or detach the armrest,
Since the armrest is supported by one hand and the lever is operated by the other hand, the detachability is not good.

[0004] Therefore, in order to improve the operability and manufacturability of the armrest, the armrest can be removed from the normal use state of the armrest only by moving the armrest along the vehicle width direction without using the lock mechanism. It is conceivable to adopt a structure that can be easily switched to a detachable state. In addition, in such a type in which the armrest is moved in the vehicle width direction, it is essential that the original smooth turning operability of the armrest is maintained as it is.

The present invention has been made in view of the above-described type in which the armrest is moved in the vehicle width direction, and can prevent rattling of the armrest in the vehicle width direction and maintain smooth rotation operability. An object of the present invention is to provide a detachable armrest structure.

[0006]

According to the first aspect of the present invention, a shaft pin and a movable pin having a flange at a distal end are erected on an inner side surface of a base end portion of an armrest, and the movable pin is provided on a side portion of a seat back. An armrest bracket provided with a shaft hole for inserting a shaft pin and a groove for inserting the moving pin is attached, and a flange portion of the moving pin rides near a use position of the groove where the moving pin of the armrest in use is located. An armrest detachable structure in which a slope is formed to guide the moving pin to the seatback side by raising the armrest and to contact the armrest to the seatback side, and a pair of abutting slopes on the back side of the flange portion of the moving pin. Is formed in a direction intersecting the groove.

According to the first aspect of the present invention, at the use position of the armrest, when the flange of the moving pin rides on the slope, the moving pin is guided to the seatback side, so that the armrest is moved to the seatback side. As a result, the abutment is prevented, and rattling in the vehicle width direction is prevented. Also,
Due to the raised portion formed on the back side of the flange, a predetermined clearance is formed between the tip of the raised portion and the terminals on both sides along the groove of the flange, so that the slope as described above is formed. Also, there is no strong interference between the terminal of the flange portion and the slope or the like during movement. Therefore, smooth rotation operability of the armrest can be maintained.

According to a second aspect of the present invention, there is provided the armrest detachable structure according to the first aspect, wherein the groove has a normal range from a use position where the armrest is directed forward to a storage position where the armrest is directed upward, and an armrest. With a detachable range up to the detached position that makes the rearward position slightly behind the stored state,
The normal range and the detachable range are connected by a narrow portion that is narrow, and the moving pin has a flange portion having a diameter that prevents the groove portion from coming off in the normal range and allows the groove to come off in the detachable range, A step portion formed on the base side of the flange portion and movable in a normal range, and having a diameter that cannot move the narrow portion; and a shaft portion formed on the base side of the step portion and movable in the narrow portion. And a biasing means for pressing the movable pin toward the seat back side is provided at a storage position serving as an entrance of at least the narrow portion of the groove.

According to the second aspect of the present invention, during normal use, the armrest does not pass through the narrow portion of the groove, so that the armrest does not come off accidentally. When the armrest is pushed to the seatback side when it reaches the storage position that becomes the entrance of the part, the moving pin can pass through the narrow part and the moving pin enters the removable area, so the armrest can be easily attached and detached. Can be. Further, in the retracted position of the armrest, there is provided an urging means for pushing the moving pin toward the side opposite to the seat back, so that even in the retracted state, rattling in the vehicle width direction of the armrest is prevented.

According to a third aspect of the present invention, there is provided the armrest detachable structure according to the second aspect, wherein the urging means comprises:
It is a spring plate arranged on the seat back side of the groove.

According to the third aspect of the present invention, since the urging means is the spring plate disposed on the seat back side of the groove, it can be easily installed in a narrow gap.

According to a fourth aspect of the present invention, there is provided the armrest detachable structure according to the third aspect, wherein the spring plate has an outer shape that covers the entire groove.

According to the fourth aspect of the present invention, since the spring plate has an outer shape that covers the entire groove, the groove is closed after the armrest is removed, and the inside of the groove is not exposed. Therefore, while the appearance is improved,
Dirt is hard to collect in the groove.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a view showing a right front seat 1 of a right-hand drive wagon vehicle. An armrest 3 is rotatably mounted on the left side of a seat back 2 of the vehicle. When the armrest 3 is rotated, three modes of a use position A, a storage position B, and a detachment position C are obtained.

As shown in FIG. 2, the front seat 1 normally faces forward (FR direction in the figure), but when the vehicle is stopped, the front seat 1 is centered on a fulcrum P as shown in FIG. It can be turned to the rear RR direction. When the front seat 1 is oriented in the rear RR direction, the armrest 3 is detached from the left side shown by the two-dot chain line and attached to the right side shown by the solid line. This is because, if it is attached to the left side, it interferes with the door 4 of the vehicle. The structure in which the armrest 3 is attached to the left and right sides of the seat back 2 will be described later.

First, the structure of the armrest 3 is shown in FIGS.
A description will be given based on FIG. A base 5 is fixed to a base end portion inner side surface 3 a of the armrest 3, and a shaft pin 6 and a moving pin 7 are erected on the base 5. The shaft pin 6 has a simple shaft shape, while the moving pin 7 has a substantially mushroom shape. The base ends of the shaft pin 6 and the moving pin 7 are supported by a bracket 8. In addition, a reinforce 9 that supports the shaft pin 6 and the middle part of the moving pin 7 is provided also on a portion protruding from the base 5.

The armrest 3 has a symmetrical shape on both sides around a straight line L (see FIG. 4) connecting the shaft pin 6 and the moving pin 7, and has surfaces 3 b, 3 b on which arms are placed on both sides of the armrest 3. Is formed. When the armrest 3 is actually attached to the seat back 2, a resin cover 10 shown in FIG. 13 and the like is combined.

The moving pin 7 has a large diameter D as shown in FIG.
₁ of the flange 11, toward the root side, the middle diameter D ₂ stage unit 1
2, includes a shaft portion 13 of small diameter D _3. In addition, collar 1
A pair of ridges 14 are formed on the back surface of the pair 1 in a direction intersecting a groove 19 described later. Accordingly, as shown in FIG. 7, the tip of the raised portion 14 and the groove 19 of the flange 11 are formed.
A predetermined clearance M is secured between the terminal 11a on both sides in a direction along (described later).

Next, the structure of the seat back 2 will be described with reference to FIG. 4 and FIGS. Metal spring plates 15a, 15b as "biasing means", metal armrest brackets 16a, 16b, and resin armrest finishers 17a, 17b are attached to left and right sides of the seat back 2, respectively. Can be Each of the right and left parts has a symmetrical shape as shown in FIG. The spring plates 15a, 15b and the armrest finishers 17a, 17b are attached to the armrest brackets 16a, 16b, and the armrest brackets 16a, 16b themselves are fixed to the sides of the seat back 2 by bolts (not shown). Since the "biasing means" is the spring plates 15a and 15b, it can be easily installed even in a narrow portion. The spring plates 15a and 15b apply a biasing force E to the moving pin 7 in the direction opposite to the seat back 2 only at the use position A and the storage position B (see FIGS. 12 and 14).
Is provided. Since the seat back 2 does not need to be provided with a conventional lock mechanism that engages with the shaft pin 6 of the armrest 3, the structure on the seat back 2 side is simpler than the conventional one.

The armrest brackets 16a and 16b are formed with a shaft hole 18 into which the shaft pin 6 is inserted and a groove 19 into which the moving pin 7 is inserted. A shaft hole 20 and a notch 21 having a shape corresponding to the groove 19 are formed in the armrest finishers 17a and 17b.
A cylindrical portion 22 that supports the shaft pin 6 is formed at 0.
At the upper part of the armrest brackets 16a and 16b, a concave portion 24 for temporarily fixing with the resin brackets 23a and 23b is formed. Spring plates 15a, 15b
Is the notch 2 of the armrest finishers 17a and 17b
1, and has a shaft hole 25 formed therein.

A concave portion 24 is formed in the upper part of the armrest brackets 16a and 16b for temporarily fixing with the resin brackets 23a and 23b. As described above, since only the upper mounting points of the armrest brackets 16a and 16b are mounted via the low-strength resin brackets 23a and 23b, the rigidity of the seat back 2 is not excessively increased. That is, when a load in the direction of the rear RR is applied to the seat back 2, the resin brackets 23a and 23b are easily deformed and come out of the rear thereof, so that the bending of the seat back 2 to the rear RR is allowed. The load in the rear RR direction can be reliably absorbed.

Also, the armrest brackets 16a, 1
The mounting state is maintained within the range of the strength of the resin brackets 23a and 23b instead of completely setting the upper mounting point of the armrests 6b to free.
The required mounting rigidity of 6b is secured.

The grooves 19 formed in the armrest brackets 16a and 16b have a normal range X from the use position A in which the armrest 3 is oriented to the front side FR to the storage position B in which the armrest 3 is oriented upward, and a slightly larger range than the storage state B in which the armrest 3 is stored. It consists of a detachable range Y reaching a detachable position C to be turned backward, and has a shape in which the normal range X and the detachable range Y are connected by a narrow portion 26 having a small width. As described above, the spring plates 15a and 15b can apply the urging force E to the movement pin 7 toward the seat back 2 only in the normal range X from the use position A of the groove 19 to the storage position B. It has become. The groove 19 of the armrest bracket 16a, 16b
In the vicinity of the use position A, the seat back 2 is gradually moved from the storage position B side to the use position A side via the inclined portion 27.
A slope 28 protruding to the side is formed. The slope 27 and the slope 28 are formed on both sides of the groove 19.

The width of the groove 19 in the normal range X is set to be larger than the middle diameter D ₂ of the step 12 of the movable pin 7 and smaller than the large diameter D ₁ of the flange 11. The width of the narrow portion 26 is set larger than the diameter D ₃ of the shaft portion 13 in and moving pins 7 smaller than the middle diameter D ₂ of the step portion 12. Moreover, desorption range Y has a generally circular larger diameter than the diameter D ₁ of the flange portion 11.

Next, the operation of this embodiment will be described mainly with reference to FIG.
This will be described with reference to FIGS. Here, the operation in a state where the armrest 3 is attached to the left side portion of the front seat 1 of the front seat 1 facing forward will be described.

In the normal range X from the use position A of the groove 19 to the storage position B, the armrest 3 can be freely rotated. In the normal range X, the armrest 3 does not come off because the flange 11 of the moving pin 7 is larger than the width of the groove 19. Further, in this use position, as shown in FIG.
1 is on the slope 28, and the moving pin 7 is guided to the seatback 2 side.
Is in contact with the seatback 2 side (specifically, in contact with the armrest finisher 17a).
Therefore, in the use position A, rattling of the armrest 3 in the vehicle width direction is prevented.

When the armrest 3 is not used, the armrest 3 is turned upward to the storage position B. By rotating the armrest 3 to the storage position B, the moving pin 7 slides down the slope 28 from the slope 28. Also at this time, the raised portion 14 is formed on the back surface of the flange 11 of the moving pin 7, and the clearance M is secured between the flange 11 and the terminal 11 a.
And the inclined portion 27 do not strongly interfere with each other.
Is smoothly moved. Since the clearance M is formed corresponding to both terminals 11 a of the flange 11, even when the flange 11 slides up the inclined portion 27, the terminal 1 is not moved.
Strong interference between 1a and the inclined portion 27 or the like is avoided. Therefore,
The smooth rotation operability of the armrest 3 is maintained.

When the movable pin 7 reaches the storage position B,
As shown in FIG. 4, since the urging force E by the spring plate 15a is applied, rattling in the vehicle width direction at the storage position B is also prevented. However, it is possible to move the armrest 3 to the seat back 2 by pressing with a force greater than the urging force E of the panel plate 15a.

When the armrest 3 is to be removed, the armrest 3 is moved with a force greater than the urging force E in a state where the moving pin 7 of the armrest 3 has reached the storage position B serving as the entrance of the narrow portion 26. Just push it to the side. Then, as shown in FIG. 15, since the shaft portion 13 having the smallest diameter corresponds to the narrow portion 26, the moving pin 7 is moved to the narrow portion 26.
And enters the desorption range Y. As shown in FIG. 16, the detachable range Y is a circle having a larger diameter than the flange 11 of the movable pin 7, so that the movable pin 7 can be easily removed from the detachable range Y.

After the armrest 3 is removed, the armrest finisher 17a is exposed.
Since the groove 5a has an outer shape that covers the entire groove 19 and the notch 21, the groove 19 is closed and the inside of the groove 19 is not exposed. Therefore, the appearance is improved, and dirt and the like hardly collect in the groove 19.

When the armrest 3 is set such that the front seat 1 is turned rearward, the seat back 2
Can be mounted on the opposite side of the device and a similar effect can be obtained. This is because the left and right sides of the seat back 2 are provided with symmetrical structures. By doing so, the armrest 3 can be attached to either the left or right side of the seat back 2, as in the related art.
There is no need to store the removed armrest 3 in one corner of the vehicle compartment or luggage room. Therefore, according to the invention of the present application, it is possible to solve the conventional problems.

That is, conventionally, since the armrest 3 can be attached to only one side of the seat back 2, when the front seat 1 is rotated, the door 4 is related to the door 4 as described above. The armrest 3 could not be mounted on the side, and the storage space for the detached armrest 3 was secured in the vehicle compartment or the luggage compartment and stored there. Therefore, the removed armrest 3 may move and generate an unpleasant sound due to the vibration during the running of the vehicle. The movement of the armrest 3 causes the shaft pin 6 to move.
When the armrest 3 is attached to the seat back 2 again due to deformation of the movable pin 7 and the armrest 3, the turning operability of the armrest 3 may be deteriorated. However, such a conventional problem can be reliably solved by the present invention having the above-described structure.

In the embodiment described above, the front seat 1 is rotated, and the armrests 3 are mounted on the left and right sides of the seat back 2. However, the present invention may be modified depending on the relationship with the vehicle door. It is also applicable to non-rotatable front seats. In addition, the present invention is not limited to the front seat 1, but can be applied to a second seat or a third seat.

[0035]

According to the first aspect of the present invention, the armrest rests on the seatback because the flange of the movable pin rides on the slope at the use position of the armrest, and the movable pin is guided to the seatback side. Side, so that rattling in the vehicle width direction is prevented. In addition, since a predetermined clearance is formed between the tip of the protrusion and the terminal on both sides along the groove of the flange by the protrusion formed on the back side of the flange, the slope as described above is formed. Even when the terminal of the flange portion and the slope or the like do not strongly interfere with each other during movement. Therefore, smooth rotation operability of the armrest can be maintained.

According to the second aspect of the present invention, during normal use, the armrest does not pass through the narrow portion of the groove, so that the armrest does not come off accidentally. When the armrest is pushed to the seatback side when it reaches the storage position that becomes the entrance of the part, the moving pin can pass through the narrow part and the moving pin enters the removable area, so the armrest can be easily attached and detached. Can be. Further, in the retracted position of the armrest, there is provided an urging means for pushing the moving pin toward the side opposite to the seat back, so that even in the retracted state, rattling in the vehicle width direction of the armrest is prevented.

According to the third aspect of the present invention, since the urging means is the spring plate disposed on the seat back side of the groove, it can be easily installed in a narrow gap.

According to the fourth aspect of the present invention, since the spring plate has an outer shape that covers the entire groove, the groove is closed after the armrest is removed, and the inside of the groove is not exposed. Therefore, while the appearance is improved,
Dirt is hard to collect in the groove.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a front seat according to an embodiment of the present invention.

FIG. 2 is a plan view showing a front seat in a forward facing state.

FIG. 3 is a plan view showing the front seat in a rearward facing state.

FIG. 4 is an exploded perspective view of a structure of a side portion of the seat back.

FIG. 5 is a plan view showing the structure of the inner surface of the base end of the armrest.

FIG. 6 is a side view showing the structure of the inner surface of the base end of the armrest.

FIG. 7 is a sectional view taken along the line SA-SA shown in FIG. 5;

FIG. 8 is a perspective view showing a moving pin.

FIG. 9 is a side view showing the armrest bracket.

FIG. 10 is a perspective view showing the back side of the armrest bracket.

FIG. 11 is a side view showing an armrest bracket combined with an armrest finisher.

FIG. 12 is a diagram showing a movement locus of a movement pin.

FIG. 13 is a cross-sectional view showing a mounting portion between the armrest and the seat back at the use position.

FIG. 14 is a cross-sectional view showing a mounting portion between the armrest and the seat back at the storage position.

FIG. 15 is a cross-sectional view showing a mounting portion between the armrest and the seat back at a narrow position.

FIG. 16 is a cross-sectional view showing a mounting portion between the armrest and the seat back at the detaching position.

[Explanation of symbols]

 Reference Signs List 3 Armrest 6 Axis pin 7 Moving pin 11 Flange 11a Terminal 14 Raised part 15a, 15b Spring plate (biasing means) 16a, 16b Armrest bracket 18 Shaft hole 19 Groove 26 Narrow part 28 Slope A Usage position B Storage position C Detachment position X Normal range Y Desorption range M Clearance

Continuation of the front page (56) References JP-A-8-182579 (JP, A) JP-A-60-108263 (JP, U) JP-A-2-141247 (JP, U) JP-A-63-169952 (JP) , U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47C 7/54 B60N 2/46

Claims (4)

(57) [Claims] 1. A shaft pin and a movable pin having a flange at a distal end are erected on an inner side surface of a base end portion of an armrest, and a shaft hole for inserting the shaft pin is provided on a side portion of a seat back.
An armrest bracket provided with a groove for inserting the moving pin is attached, and the flange of the moving pin rides up near the use position of the groove where the moving pin of the armrest in use is located, so that the movable pin is seated back. A detachable structure of the armrest formed with a slope for guiding the armrest to the seat back side by guiding the armrest to the seatback side, wherein a pair of raised portions that contact the slope on the back side of the flange portion of the moving pin intersect the groove portion. An armrest detachable structure characterized by being formed in a. 2. The armrest attaching / detaching structure according to claim 1, wherein the groove has a normal range from a use position in which the armrest is directed forward to a storage position in which the armrest is directed upward, and the armrest is slightly rearward from the retracted state. The normal range and the detachable range are connected by a narrow portion that is narrow, and the moving pin prevents the groove from coming off in the normal range and in the detachable range. A flange portion having a diameter that allows it to be removed, a step portion that is formed on the base side of the flange portion and that can move in the normal range and cannot move the narrow portion, and a flange portion that is formed on the base side of the step portion. A shaft portion having a diameter capable of moving the narrow portion, and at a storage position serving as an entrance of at least the narrow portion of the groove portion, biasing means for pushing the moving pin toward the seat back side is provided. Detachable armrest structure. 3. The detachable structure of the armrest according to claim 2, wherein the biasing means is a spring plate disposed on a seat back side of the groove. 4. The detachable structure of the armrest according to claim 3, wherein the spring plate has an outer shape that covers the entire groove.