JPH09117350A - Armrest memory stand device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure smooth operation and the hold at a fixed position in housing time by making tensile force of a torsion coil spring act on a rotary frame fitted to a front fixed shaft of a case unit, and constituting so as to apply resistance force and encouraging force in pulling-out time and housing time of a memory stand connected to the rotary frame by a hinge. SOLUTION: In a housing condition, a memory stand installed on a memory stand installing plate 5 is hung down along an inside wall of an armrest. At this time, a rotary frame 4 is energized by tensile force of a coil spring 25 through a link 33, and a pin 44 is positioned on the lower end of a rotation regulating groove 24. When this memory stand is pulled out against tensile force of the coil spring 25, through the tensile force acts on the rotary frame 4 through the pin 44 until a line of action of force of the link 33 reaches the center 40 of the rotary frame 4, after it passes through the center 40, the tensile force of the coil spring 25 acts so as to encourage rotation of the memory stand. In a standing erect condition, the pin 44 is positioned on the upper end of the rotation regulating groove 24, and the memory stand is brought down to the rotary frame 4, and is put in a working condition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a memo pad device which is fixed to an inner side wall of an armrest portion of a continuous chair or mounted in a storage portion provided directly below the armrest portion.

[0002]

2. Description of the Related Art When a large number of chairs are installed in parallel in an auditorium or hall, the shortest distance between the front and rear ends of the chairs is regulated by regulations to secure a passage for passengers. Therefore, when the memo pad or the like is attached to the chair, it is desirable that the accessory such as the memo pad does not protrude outside the chair body. For this reason, it has been practiced to store the memo pad etc. in the armrests, but in the conventional armrest storage memo pad, since all the taking out and storing operations are performed manually, if the storage is incomplete, it projects into the passage and becomes an obstacle. , It was dangerous at the time of emergency evacuation.

[0003]

DISCLOSURE OF THE INVENTION The present invention provides a memo pad device having an automatic storage function, which is used by being fixed to an inner wall of an armrest of an existing chair or mounted in a front opening storage chamber provided in the armrest. It is possible to provide a memo pad device which is automatically operated from the uppermost position to a predetermined stop position by setting the reclinable memo pad in a vertical state.

[0004]

In the memo pad device of the present invention, a concave portion for accommodating a torsion coil spring is formed on one rear side of a rectangular case body as a whole, and a fixed shaft is projected on the front side of the other side. A case unit having a rotation restricting groove penetrating in a range of about 180 ° around the fixed shaft is fixed to an inner wall of an armrest, and a bearing hole fitted to the fixed shaft of the case unit and the rotation restricting groove are provided. Has a pin that fits into the, and a rotation frame to which a memo pad attachment plate is hingedly connected so that it can be laid down at the outer peripheral edge,
In the case unit, one end of the torsion coil spring is connected to a pin of the rotating frame by a link so as to constantly apply a pulling force, and can be used only by fixing the case unit to the inner wall of the armrest. is there. When a front opening storage chamber is provided directly under the armrest, a slide base that slides along the guide rail is provided inside the armrest, the case unit is attached to the tip of the slide base, and the opening side inner wall of the storage chamber is rotated. By connecting the outer edge of the moving frame with a link, the memo pad can be automatically retracted.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a case where the device of the present invention is fixed to the inside surface of an armrest, 1 is an armrest of a chair, 2 is an inside surface, 3 is a case unit of the device of the present invention, 4 is a rotating frame, and 5 is a memo. It is a base mounting plate. The case unit and rotating frame are made of aluminum light alloy or reinforced plastic. The case unit has a rectangular shape as a whole, and a recess 20 for accommodating a coil spring is formed on one side thereof and a center hole 21 is formed on the other side surface.
A fixed shaft 22 having a groove is provided so as to project, and a semicircular arc-shaped rotation restricting groove 24 is provided around the fixed shaft. Reference numeral 23 is a pin hole for stopping the rotation of the rotating frame provided on the peripheral surface of the fixed shaft. Reference numeral 25 is a torsion coil spring, 26 is a fixed end, and 27 is a rotation end, which is fitted into an engagement hole 29 of a tongue-shaped rotation piece 28 and is housed in the spring housing recess 20 in a biased state by a screw 31. It The rotating frame 4 has a U shape as a whole, and a pair of bearing projections 36, 36 for connecting hinges and an intermediate recess 37 in which a pin hole 38 is vertically provided are formed on the upper side portion. Reference numeral 39 denotes a spring retractable pin that serves as a stop pin for the rotating frame. A bearing hole 41 having a mounting hole 40 at the center is formed on the inner surface 4a of the rotating frame, and a rotation restricting pin 44 is provided on the outer periphery of the bearing hole 41 so that the bearing hole 41 is fitted to the fixed shaft 22 of the case unit. The pin 44 penetrates the rotation restricting groove 24 while being rotatably attached by the rivet 42. The tip of pin 44 is link 3
It is connected to the connecting hole 30 of the rotating piece 28 by 3. Bearing protrusions 51, 5 for connecting hinges are provided on the base end side of the memo pad mounting plate 5.
A pin pressing protrusion 53 is provided at the center of the recess 1 and the recesses 52, 52.

The operation mode of the above apparatus is as shown in FIG. 3, and the memo pad 6 is in the fixed position, that is, the stored state of FIG. 3A.
Is hanging along the inner wall of the armrest. In this state, the rotating frame 4 is urged by the pulling force of the coil spring 25 via the link 33, and the pin 44 moves the lower end 24 of the rotation restricting groove.
It is located at b and holds the memo pad in a retracted state. When this memo pad is pulled out against the tensile force of the spring 25 as shown in FIG. 3B, the line of action of the force of the link 33 is the center 4 of the rotating frame.
Until the tension reaches 0, the pulling force acts on the rotary frame 4 via the pin 44 and resists, but after passing the center 40, the pulling force of the spring is applied until the position shown in FIG. Works to assist in manual rotation. In the upright state, the pin 44 is positioned at the upper end 24a of the groove 24 and holds this state, so that the memo pad 6 is laid down with respect to the rotary frame 4 to be in a used state. When the memo pad is to be stored, if the memo pad is pushed up to the state shown in FIG. 6C and the memo pad is lightly pushed forward, the memo pad automatically starts to rotate due to its own weight. At the beginning of the descending pivoting process of the memo pad, the pulling force of the spring 25 resists and abrupt pivoting is blocked, and after the state of FIG. It returns as shown in FIG. As described above, the coil spring 25 effectively acts on both the pull-out side and the storage side not only when the memo pad is stopped but also during the rotating process. In the upright state of the memo pad, the pin hole 38 formed on the intermediate concave portion 37 of the rotating frame and the pin hole 23 provided on the peripheral surface of the fixed shaft are aligned with each other.
The spring-biased retractable pin 39 to the pin hole 23
When the memo pad is not in the upright state as shown in FIG. 4, the pivoting frame 4 can be made non-rotatable by being provided so as to reach the above position and engaging with the pressing protrusion 53 of the memo pad mounting plate 5.

FIG. 5 and the following figures show a case in which a memo pad storage chamber 7 is provided immediately below the armrest to be an automatic retractable type. The configurations of the inside of the unit case and the rotating frame are exactly the same as above. In FIG. 8, 7a and 7b are inner walls that form the storage chamber 7, and 60 is a commercially available slider fixedly mounted on one inner wall 7a. 61
Is a slide guide rail, 62 is a slide base,
The case 3 is fixed to the tip. 63 is the other inner wall 7b
One end 64 is pivotally attached to the tip of the storage chamber opening 8 side, and the other end 65 is pivotally attached to the outer edge portion of the pivot frame 4. The fixed end 64 of the inner wall of the storage space of the link 63 is in the storage state of the memo pad (FIG. 7E) and the upright state of the memo pad (FIG. 7).
The position of the link 63 and the position of the rotary end 65 of the link are set in the middle of the respective rotary frame positions in (a)) so that the rotary frame 4 can be rotated by 180 °. . The operation mode of the above device is as shown in FIG. 7, and the memo pad is shown in FIG.
As shown in (d) of the drawing, the pivot end 65 of the link 63 pivots in conjunction with the pivot of the pivot frame 4 to pull out the slide base 62 toward the opening 8 side. . Further, the slide base 6 is passed through the states shown in FIGS.
2 is completely pulled out to bring it upright as shown in FIG. In case of storing, if the memo table is upright ((a) in the figure) and the hand is released, the process is reversed due to the weight of the memo table and automatically stored in the storage chamber 7 as shown in (e) of the figure. After that, this retracted state is maintained. During this time, the action of the spring 25 is exactly the same as in the case of the invention described above.

[0008]

As described above, in the device of the present invention, the coil spring 25 in the case unit constantly acts on the rotating frame via the link 33, but it resists or assists depending on the rotating position of the memo pad. In particular, since the acceleration at the time of turning the storage of the memo pad is attenuated, the operation is smooth and stable, and it acts as a retracting force at a fixed position, so that a reliable storage state is maintained. Also, when the case unit is attached to the slider and provided in the storage chamber, the pulling force of the coil spring 25 acts as a rotational force in the retracting direction with respect to the rotating frame at the fixed position, so that the slide base is also retracted and accommodated. In the case of the automatic retractable type, the armrest portion can be reduced in size, so that there is an advantage that the depth of the entire chair can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a memo pad automatic storage device of the present invention attached to an inner surface of a chair armrest.

FIG. 2 is a component exploded view showing the internal structure of the device of the present invention.

3 (a), (b) and (c) are side views showing the operation of the apparatus of FIG.

FIG. 4 is a vertical sectional side view of the center of the rotating frame.

FIG. 5 is a plan view of a connecting chair when the device of the present invention is retractably installed in a storage room provided directly under an armrest.

FIG. 6 is a front view of the same.

7 (a), (b), (c), (d), and (e) are side views showing the operation of the apparatus of FIG.

FIG. 8 is a cross-sectional plan view of the armrest storage chamber.

[Explanation of symbols]

 1 Armrest 2 Inner Side 3 Case Unit 4 Rotating Frame 5 Memo Pad Mounting Plate 6 Memo Pad 7 Memo Pad Storage Room 7a, 7b Inner Wall 8 Opening 22 Fixed Shaft 23 Pin Hole 24 Rotation Restriction Groove 25 Coil Spring 28 Rotating Piece 33 Connection Link 36 Bearing protrusion 38 Pin hole 39 Rotation stop pin 41 Bearing hole 44 Rotation restriction pin 61 Guide rail 62 Slide base 63 Rotation pull-in link 64 Fixed end 65 Rotation end

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[Procedure amendment]

[Submission date] January 18, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

FIG. 5 and the following figures show a case in which a memo pad storage chamber 7 is provided immediately below the armrest to be an automatic retractable type. The configurations of the inside of the unit case and the rotating frame are exactly the same as above. In FIG. 12, 7a and 7b are inner walls forming the storage chamber 7,
Is a commercially available slider fixed to one inner wall 7a. 6
Reference numeral 1 is a slide guide rail, and 62 is a slide base, and the case 3 is fixed to the tip portion. Reference numeral 63 is a rotary pull-in link whose one end 64 is pivotally attached to the tip of the other inner wall 7b on the side of the storage chamber opening 8, and the other end 65 is pivotally attached to the outer edge of the rotary frame 4. The fixed end 64 of the storage room inner wall of the link 63 is
It is set at an intermediate position between the rotating frame positions of the memo pad storage state (FIG. 11) and the memo table upright state (FIG. 7), and the length of the link 63 and the position of the rotary end 65 of the link are set to the rotary frame 4. It is selected to allow 180 ° rotation. The operation mode of the above device is as shown in FIGS. 7 to 11, and when the memo pad is pulled out from the drooping retracted state as shown in FIG. 11 as shown in FIG. 10, the pivot end 65 of the link 63 causes the pivot frame 4 to rotate. The slide base 62 is pulled out toward the opening 8 side in conjunction with the turning of the slide base 62. Further, after going through the states of FIGS. 9 and 8, the slide base 62 is completely pulled out to the upright state of FIG. 7, and then the memo pad is laid down. When storing, when the memo table is upright (FIG. 7) and the hand is released, the process of the reverse of the above is performed due to the weight of the memo table.
As described above, it is automatically stored in the storage chamber 7, and thereafter this retracted state is maintained. During this time, the action of the spring 25 is exactly the same as in the case of the invention described above.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1 is a perspective view when the memo pad automatic storage device of the present invention is attached to the inside surface of a chair armrest.

FIG. 2 is a component development view showing the internal structure of the device of the present invention.

3 (a), (b) and (c) are side views showing the operation of the apparatus of FIG.

FIG. 4 is a vertical cross-sectional side view of a rotating frame.

FIG. 5 is a plan view of a connecting chair when the device of the present invention is retractably installed in a storage room provided directly under an armrest.

FIG. 6 is a front view of the same.

FIG. 7 is a side view showing a retracting operation process of the memo pad.

FIG. 8 is a side view showing a process of retracting the memo pad.

FIG. 9 is a side view showing a process of retracting the memo pad.

FIG. 10 is a side view showing the retracting operation process of the memo pad.

FIG. 11 is a side view showing a process of retracting the memo pad.

FIG. 12 is a cross-sectional plan view of the memo table retractable storage chamber.

[Explanation of reference numerals] 1 armrest 2 inner surface 3 case unit 4 rotating frame 5 memo pad mounting plate 6 memo pad 7 memo pad storage chamber 7a, 7b inner wall 8 opening 22 fixed shaft 23 pin hole 24 rotation restricting groove 25 coil spring 28 Rotation piece 33 Connection link 36 Bearing protrusion 38 Pin hole 39 Rotation stop pin 41 Bearing hole 44 Rotation restriction pin 61 Guide rail 62 Slide base 63 Rotation pull-in link 64 Fixed end 65 Rotation end

[Procedure 3]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

[Fig. 2]

[Figure 3]

FIG. 4

[Figure 5]

FIG. 11

FIG. 6

FIG. 7

[Figure 8]

FIG. 9

FIG. 10

FIG.

Claims (3)

[Claims] 1. A generally rectangular case body is provided with a recess for accommodating a torsion coil spring on one rear side, a fixed shaft is projectingly provided on the front side of the other side, and about 1 is provided around the fixed shaft.
A case unit having a rotation restriction groove penetrating in a range of 80 ° is fixed to an inner wall of an armrest, and has a bearing hole fitted to a fixed shaft of the case unit and a pin fitted into the rotation restriction groove. , A rotation frame in which a memo pad mounting plate is hingedly connected so as to be able to fall down, and one end of the torsion coil spring in the case unit is linked so as to constantly apply a tensile force to a pin of the rotation frame. An armrest memo pad device that is connected via. 2. A generally rectangular case body is formed with a recess for accommodating a torsion coil spring on one rear side thereof, a fixed shaft is projectingly provided on the front side of the other side, and about 1 is provided around the fixed shaft.
A case unit having a rotation restricting groove penetrating in a range of 80 ° is fixed to a slide base front end of a slider fixedly installed in a front opening storage chamber provided directly under an armrest, and fitted to a fixed shaft of the case unit. A rotation frame having a bearing hole and a pin that fits in the rotation restriction groove and a hinged connection of a memo pad mounting plate that can be laid down is provided on the outer peripheral edge portion, and one end of the screw coil spring is connected to the rotation frame in the case unit. One end of a rotation retracting link for advancing and retracting the slide base according to the rotation of the rotating frame is connected to the pin of the moving frame via a link so as to constantly apply a pulling force. An armrest memo pad device which is pivotally attached to an inner wall on the chamber opening side and the other end is pivotally attached to an outer edge portion of the rotating frame. 3. A retractable pin 39, which is spring-biased upward, is provided in the hinge connection recess 37 of the rotating frame so as to be insertable into and removable from the pin hole 23 on the peripheral surface of the fixed shaft, and the retractable pin is provided on the memo pad mounting plate. 3. The device according to claim 1, wherein the rotating frame is made non-rotatable when the memo pad is not in the upright state by being engaged with the pressing protrusion.