JP2004194918A - Support structure for memo stand - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate the fluctuation of frictional force acting on a spring up type memo stand from product to product to maintain the frictional force for a long period of time. <P>SOLUTION: A support structure for the memo stand includes a support axis 3 pivotably supporting the memo stand 1, bearing 4(5) of the support axis 3 fixedly attached to one of the memo stand 1 and a support member 2, and a frictional force providing member 6 compressedly interposed between the member to which the support axis 3 or the bearing 4(5) is not fixedly attached of the memo stand 1 and support member 2 and the support axis 3 and the bearing 4(5), and slidingly contact to the outer peripheral surface of the support axis 3 or the bearing 4(5) to generate a friction between the memo stand 1 and support member 2. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a support structure for a memo table. More specifically, the present invention relates to an improvement of a support structure for rotatably supporting a flip-up type memo table with a support member provided, for example, on the side of a chair.
[0002]
[Prior art]
2. Description of the Related Art Some chairs used for meetings and meetings are provided with a flip-up type memo pad that can be raised when sitting and placed on the side of the chair, such as an armrest, only when necessary. . For example, the chair 101 shown in FIGS. 18 and 19 has a use position where the chair 101 is held substantially horizontally above the seat 102 and a stack position where the chair 101 is held in an inclined state outside the seat 102 on the left frame 104. And a memo table 103 rotatably supported at an upright position held substantially vertically (see Patent Document 1). The attachment mechanism 105 for rotatably supporting the memo stand 103 includes, for example, a pair of end faces that relatively move with the rotation of the memo stand 103, a convex portion provided on one of these end faces, and The memo table 103 is provided by providing a concave portion provided and a biasing member for applying elastic force in a direction in which the convex portion can engage with the concave portion, and engaging the convex portion with the concave portion at the upright position. It is held in the upright position.
[0003]
In the case of such a flip-up structure, the memo table 103 is held in the above three positions (the use position, the stack position, and the standing position), but freely moves between the positions. Therefore, if the frictional resistance acting on the memo table 103 is small, the memo table 103 may suddenly and suddenly fall to the use position, for example, and may make a loud noise or cause damage. Therefore, a support structure has been devised to apply an appropriate frictional force to the memo table 103 to brake the movement at the time of rotation, and to maintain the angle by releasing the hand at an arbitrary angle during the rotation. Have been. As an example of such a support structure, for example, a plastic bushing is provided between the front and rear open ends of a pipe-shaped bearing that rotates together with the memo table 103 and the open ends of fixed bearings disposed before and after the support member. In some cases, an appropriate frictional force is applied to the memo table 103 by tightening these bushes so as to sandwich the bearing on the memo table 103 side.
[0004]
[Patent Document 1]
JP-A-7-184737
[0005]
[Problems to be solved by the invention]
However, in the case of such a support structure, it is necessary to manually adjust the tightening of the bush each time the memo table 103 is attached to each chair. There is a problem that even larger variations occur for workers. In this case, it is difficult for the frictional force acting on the memo table 103 for each product to be uniform.
[0006]
Also, in the case of such a structure in which the bushing is pressed in the axial direction to obtain a frictional force, there is also a problem that the axial loosening is likely to occur gradually while the bearing is repeatedly rotated, and it is difficult to maintain a constant frictional force. is there. Moreover, since the bush is pressed against a thin and small area such as the end face of the pipe to obtain a frictional force, the bush tends to be worn as it is used.
[0007]
Therefore, the present invention provides a support structure for a memo table that can eliminate the variation in frictional force acting on the flip-up memo table for each product and can maintain this frictional force for a long period of time. Aim.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is a memo table support structure for rotatably supporting a flip-up memo table on a support member. A supporting shaft, a bearing of a supporting shaft fixed to one of the memo table and the supporting member, a member of the memo table and the supporting member on which the supporting shaft or the bearing is not fixed, and the supporting shaft or the bearing. And a frictional force applying member that is interposed in a state of being pressed between and slides on the outer peripheral surface of the support shaft or the bearing to generate friction between the memo table and the support member.
[0009]
In the present invention, a so-called hinge structure is constituted by a support shaft and a bearing, and thereby the memo table is rotatably supported so as to jump up. Then, the frictional force applying member is brought into sliding contact with the outer peripheral surface of the support shaft or the bearing so that a repulsive force for generating a necessary frictional force acts on these support shafts and the like not in the axial direction but in the radial direction. I have. In the case where the pressing force due to the repulsion of the frictional force applying member is caused to act in the radial direction from the outer peripheral surface of the support shaft or the like, the dispersion is performed in a wide contact area regardless of whether the support shaft or the like is pipe-shaped. To create friction. For this reason, even if the support shaft or the like repeatedly rotates, the frictional force applying member is less likely to be worn or deformed. Also, there is little loosening in the axial direction as in the structure for pressing in the axial direction.
[0010]
In addition, in the case of such a support structure, the frictional force acting on the memo table via the support shaft and the like, the material and size of the frictional force applying member, the material and shape of the support shaft or bearing, and the frictional force It is almost uniformly determined by the specifications of the support structure such as the size of the intervening space of the application member. In addition, there is no need to perform a conventional tightening adjustment in the axial direction.
[0011]
In such a support structure, it is preferable that the frictional force applying member is a belt-like member that is long in the axial direction of the support shaft or the bearing. In such a case, since the force applied to the frictional force applying member from the support shaft or the like is dispersed and the pressure is reduced, wear and deformation of the frictional force applying member are reduced, and the fluctuation of the frictional force is easily suppressed.
[0012]
Further, in this support structure, it is preferable that the frictional force applying member has a wide shape that is wide in the circumferential direction of the support shaft or the bearing, as in the third aspect of the invention. In such a case as well, the force received by the frictional force applying member from the support shaft or the like is dispersed and the pressure is reduced, so that wear and deformation of the frictional force applying member are reduced, and the fluctuation of the frictional force is easily suppressed.
[0013]
In addition, as in the invention according to claim 4, it is preferable that the surface of the frictional force applying member is provided with irregularities, and the support shaft or the bearing is provided with an engagement projection fitted into the irregularities. In such a case, the support shaft or the like or the frictional force applying member can be rotated stepwise.
[0014]
Furthermore, it is also preferable that a resin molded product is used as the frictional force applying member as in the invention described in claim 5. In this case, it is easy to make the shape and size of the members uniform and the cost is low. Further, since the same shape can be obtained by molding the frictional force imparting member, the same frictional force without variation among the products of the memo table can be obtained. In addition, if it is a resin product, it is easy to mold and can be cut with a cutter or scissors (scissors), so that the frictional force can be easily changed.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the configuration of the present invention will be described in detail based on an example of an embodiment shown in the drawings.
[0016]
1 to 9 show an embodiment of the present invention. The support structure of the memo table of the present invention is a structure for rotatably supporting the flip-up memo table 1 on the support member 2 using a hinge mechanism including a support shaft 3 and a bearing. In the embodiment described below, a case will be described in which the present invention is applied to a chair 18 (see FIGS. 6 to 9) which is used for a meeting or a meeting and has a flip-up type memo table 1.
[0017]
The chair 18 of the present embodiment includes four legs 19, a horizontal frame 20 before and after connecting these legs 19, a seat 21, a backrest 22, and the like. A portion of the horizontal frame 20 located on the front side of the chair 18 and extending toward the right side of the occupant is a support arm 9 bent upward, and supports the flip-up memo table 1. (See FIG. 6 etc.). On the left and right sides of the backrest 22, there are provided narrow armrests 23 on which a seated person can rest their elbows. The armrest 23 and the memo stand 1 have substantially the same height so that the occupant can easily write notes while the right elbow is placed on the armrest 23 (see FIG. 8).
[0018]
At the upper end of the support arm 9, a support member 2 for rotatably supporting the memo table 1 is provided (see FIG. 1). For example, the support member 2 of the present embodiment includes a base member 10 in the shape of an oval pipe wide to the left and right fixed to the support arm 9 with both end surfaces facing in the front-rear direction, and the outside of the base member 10 (this embodiment). In the case of the embodiment, the supporting member 4 is constituted by a cylindrical support member-side bearing 4 fixed to the right side of the seated person by welding or the like (see FIG. 2). When the base receiving member 10 has such a wide shape on the left and right, the force received from the memo table 1 can be dispersed over a wider surface and supported in a stable state. At both front and rear ends of the base receiving member 10, a pair of leg caps 11 that improve aesthetics and cover a sharp end surface to enhance safety are fitted (see FIG. 1). Further, a cushioning material 12 such as a protective sheet is provided on the upper surface of the support member 10 to alleviate an impact when the memo support 1 is lowered and to prevent the upper surface of the support member 10 and the top plate receiver 14 from being damaged. I have.
[0019]
The support shaft 3 is a round shaft for rotatably supporting the memo table 1 and has a length sufficient to support the memo table 1 in a rotatable state, and is rotatable by the support member side bearing 4. Alternatively, it is supported in a non-rotatable state. Although not particularly shown, in the present embodiment, a knurled portion is provided at one end or both ends of the support shaft 3, and the support shaft 3 is fixed by being pressed into the memo table side bearing 5. However, instead of such knurling, for example, a groove or the like is provided so that a retaining ring such as a retaining ring can be attached, and the retaining shaft 3 can be retained after the support shaft 3 is fitted into the supporting member side bearing 4. You may do so.
[0020]
The memo stand 1 includes a top plate 13 and a plate-shaped top plate support 14 that supports the top plate 13. The top plate 13 is attached to the top plate receiver 14 by, for example, four screws. Further, the top plate receiver 14 is rotatably supported by the support shaft 3 via a memo table bearing 5 provided at an end thereof. The memo table side bearing 5 can be formed, for example, by winding the band portions at both corners on the supported side of the top plate receiver 14 inside. It may be formed by sticking to the surface. The memo table side bearings 5 are provided at two places in the front-rear direction of the chair 18 so as to sandwich the support member side bearing 4 described above. The portion of the supported side end of the top plate receiver 14 that is sandwiched between the front and rear memo table bearings 5 is a bent portion 15 that is bent substantially vertically toward the back surface of the top plate receiver 14. (See FIGS. 2 and 3).
[0021]
Further, a frictional force applying member 6 is provided between the memo support 1 and the support member 2 to generate friction between the two members and to brake the movement of the memo support 1 during rotation. In this case, if a frictional force is applied to maintain the angle even when the hand is released from the memo table 1 at an arbitrary angle during the rotation, the memo table 1 during the rotation will not fall down unexpectedly and the operation is easy. Become. In the present embodiment, the frictional force imparting member 6 is interposed in a state where the frictional force imparting member 6 is pressed by the space between the inner corner of the bent portion 15 provided on the top plate receiver 14 and the support member side bearing 4. Friction is generated between the memo table 1 and the support member 2 (see FIGS. 3 to 5). In this case, the frictional force applying member 6 is always located at a corner formed by the bent portion 15, and when the memo table 1 is rotated, the memo table 1 slides on the outer peripheral surface of the support member side bearing 4. Rotates with 1.
[0022]
In such a frictional force applying member 6, a portion which is in sliding contact with the support member side bearing 4 is wide in the circumferential direction of the support member side bearing 4 so as to have a contact area as large as possible with the peripheral surface of the support member side bearing 4. Those having a wide shape are preferred. In such a case, since the pressing force received by the frictional force applying member 6 from the support member side bearing 4 is dispersed and the pressure is reduced, wear and deformation of the frictional force applying member 6 are reduced, and the fluctuation of the frictional force is easily suppressed. For example, in this embodiment, the frictional force applying member 6 is a solid bar (triangular bar) having a substantially triangular cross section, and the oblique side (slope) is brought into sliding contact with the peripheral surface of the support member side bearing 4. The area is increased (see FIGS. 3 and 4). Further, it is preferable that the frictional force applying member 6 is formed in a belt shape long in the axial direction of the support member side bearing 4. In such a case, similarly to the above case, the pressing force received by the frictional force applying member 6 from the support member side bearing 4 is dispersed and the pressure is reduced, so that the frictional force applying member 6 is less worn and deformed, and the fluctuation of the frictional force is reduced. It is easier to control. For example, in the present embodiment, the frictional force applying member 6 has a length slightly shorter than the axial length of the support member side bearing 4 (see FIG. 1).
[0023]
Further, when the frictional force applying member 6 is interposed in a state of being pressed between the top plate receiver 14 and the support member side bearing 4, the frictional force imparting member 6 exerts an appropriate sliding friction with the peripheral surface of the support member side bearing 4. It is preferable to use a material that is produced and is formed of a material that is less likely to be worn or deteriorated over time. Examples of such a material include engineering plastics such as POM (polyacetal), and more specifically, PP (polypropylene) having excellent strength and lightness and having low water absorption. Further, when wear due to use and slidability with the support member-side bearing 4 do not cause a significant problem, it may be formed of an elastic material such as rubber.
[0024]
When the support structure of the memo table 1 is configured as described above, the memo table 1 is assembled to the chair 18 as follows. That is, first, the frictional force applying member 6 is installed at a corner portion of the top plate receiver 14, that is, a corner between the pair of memo table side bearings 5, and then the memo table side bearing 5 of the top plate receiver 14 is connected to the support member side bearing 4. Are positioned at both ends so as to be sandwiched. Here, a force is applied to the memo table 1 so that the frictional force applying member 6 is pressed so that the center of the memo table-side bearing 5 coincides with the center of the support member-side bearing 4, and one of the memo table-side bearings 5. , The support shaft 3 is inserted from the end portion, and the bearings 4 and 5 are penetrated. After penetrating the support shaft 3 through the memo table side bearing 5 and the support member side bearing 4 as described above, the memo table 1 is supported by the support member 2 without falling even if the operator releases the hand. I have. In the case of the present embodiment, the end of the support shaft 3 is knurled, and thereafter, the support shaft 3 can be fixed to the memo table side bearing 5 by hammering and press-fitting. In some cases, a necessary stopper may be provided, for example, by fitting a retaining ring to the end of the support shaft 3 or the like. Also, the leg caps 11 are fitted into the openings at both ends of the support member 10 as necessary.
[0025]
According to the support structure of the memo table 1 having such a configuration, when assembling the memo table 1 to the chair 18, the memo table-side bearing 5 and the support member-side bearing 4 are aligned while applying a force to the memo table 1. No extra work is required except for passing through the support shaft 3 in a state where the support shaft 3 is moved, and no tightening adjustment is required, so that the assembling work for the operator is simple and easy. In addition, in the case of such a structure, the frictional force acting on the memo table 1 depends on the material, size, shape, surface treatment of the frictional force imparting member 6, material, shape, surface treatment of the support member side bearing 4, and the support member side. It is almost uniformly determined by the size of the space between the bearing 4 and the top plate receiver 14, and the same frictional force is used regardless of whether the operator is skilled or not, because the conventional tightening adjustment is not required. Can be mass-produced. Therefore, it is possible to mass-produce a product having a constant quality while keeping the frictional force, which has conventionally been varied, substantially uniform.
[0026]
In addition, since the support structure has a structure in which the frictional force applying member 6 is pressed in the radial direction with a relatively large contact area on the peripheral surface of the support member-side bearing 4, even if the memo table 1 is repeatedly rotated, the frictional force is increased. The wear and deformation of the force applying member 6 are unlikely to occur. For this reason, the problem that the frictional force gradually deteriorates even when used for a long time hardly occurs, and the quality of the support structure is easily maintained by maintaining a substantially constant frictional force.
[0027]
The above embodiment is an example of a preferred embodiment of the present invention, but the present invention is not limited to this, and various modifications can be made without departing from the gist of the present invention. For example, in the present embodiment, the frictional force applying member 6 is interposed between the support member-side bearing 4 fixed to the support member 2 and the memo table 1 rotatable around the support member-side bearing 4. Conversely, a frictional force applying member 6 can be interposed between the support member 2 and the memo table-side bearing 5 fixed to the memo table 1 (see FIGS. 10 to 12). In this case, for example, a rectangular plate-shaped member is fixed to the upper end of the support arm 9 and is used as a pedestal receiving member 10 (see FIG. 12). It is fixed by welding or the like. However, the support member-side bearing 4 in this case is formed of, for example, two cylindrical members which are divided into two front and rear portions and arranged coaxially (see FIG. 12). The portion of the plate-shaped support member 10 that is sandwiched between these two support member-side bearings 4 is a bent portion 15 that is bent substantially vertically upward (see FIG. 12). A cushioning material 12 such as a protective sheet is provided on the upper surface of the base receiving member 10 to alleviate the shock when the memo table 1 is lowered and to prevent the upper surface of the base receiving member 10 and the top plate receiver 14 from being damaged. Provided. On the other hand, the memo table side bearing 5 is configured by, for example, fixing one cylindrical member to the center of the edge of the memo table 1 (see FIG. 11). The axial length of the memo table side bearing 5 is a length that fits between the two support member side bearings 4 described above. A frictional force applying member 6 is provided between the memo table 1 and the support member 2 to generate friction between these two members and to brake the movement of the memo table 1 during rotation. More specifically, the frictional force applying member 6 is interposed in a state where the frictional force applying member 6 is pressed by the space between the inside corner of the bent portion 15 provided on the base receiving member 10 and the memo table side bearing 5. This causes friction between the memo table 1 and the support member 2 (see FIGS. 10 to 12). In this case, the frictional force applying member 6 located at the inner corner of the bent portion 15 remains at that position without moving (rotating) as in the above-described embodiment, and the memo table 1 has rotated. In this case, the sliding member comes into sliding contact with the outer peripheral surface of the support member side bearing 4 which rotates together with the memo table 1.
[0028]
In the above-described embodiment, the frictional force applying member 6 is brought into contact with the bearing (the support member-side bearing 4 or the memo table-side bearing 5) to apply friction. The member to be formed is not limited to the bearing. For example, when the support shaft 3 is integrated with the memo table 1 by cantilever or both-ends or other forms, and rotates integrally with the memo table 1, A frictional force applying member 6 may be interposed between the exposed surface of the support shaft 3 and the support member 2 to apply a frictional force to the rotating support shaft 3 (see FIG. 13). In this case, the rotating memo table 1 receives frictional resistance via the support shaft 3 in the same manner as in the above-described embodiment. A part of the support shaft 3 connecting the pair of bearings 4 and 5 constituting the hinge is exposed. For example, the support member-side bearing 4 is divided into two parts to expose the support shaft 3 therebetween, thereby providing a frictional force applying member 6. May be pressed.
[0029]
In short, the present invention constitutes a hinge structure that allows the memo stand 1 to be flipped up by the support shaft 3 and the bearings 4 and 5, and a portion that moves with the memo stand 1 when the memo stand 1 is rotated. The frictional force imparting member 6 is sandwiched between a fixed portion and a portion that does not move even when the memo table 1 is moved, so that a friction force is applied to the memo table 1 via a relatively movable member. Therefore, the member with which the frictional force applying member 6 slides is not limited to any of the support shaft 3 and the bearings 4 and 5 as long as it has such a characteristic and exerts a similar effect.
[0030]
Further, in the above-described embodiment, the frictional force applying member 6 is a solid bar (triangular bar), but may be a hollow member such as a pipe having a substantially triangular cross section as shown in FIG. it can. In such a case, since the member itself becomes more flexible in the radial direction, the frictional force applying member 6 can be used as if it were a member having elasticity. Further, since the oblique side (slope) of the frictional force applying member 6 is bent, the contact area between the frictional force applying member 6 and the support shaft 3 (or the bearings 4 and 5) is further increased, and the frictional force applying member 6 is dispersed in a wider contact area. The force comes to act in the state where it was done.
[0031]
In the above-described embodiment, both the surface of the support shaft 3 (or the bearings 4 and 5) and the contact surface of the frictional force applying member 6 against which the support shaft 3 and the like are pressed are formed as curved or smooth surfaces without irregularities. By doing so, the inclination of the memo table 1 can be changed steplessly. However, the inclination of the memo table 1 may be changed stepwise by providing irregularities or projections on these contact surfaces. For example, as shown in FIG. 15, unevenness 7 extending in the axial direction is provided on the surface of the hollow frictional force applying member 6 which comes into contact with the support shaft 3, and the peripheral surface of the support shaft 3 (or the bearings 4, 5) is provided. By providing the engagement projections 8 fitted to the irregularities 7, the support shaft 3 (or the bearings 4, 5) can be rotated stepwise within the range where the irregularities 7 are provided. Thereby, when changing the inclination of the memo table 1, the inclination changes stepwise. In addition, when the inclination of the memo table 1 is changed in this way, a so-called click feeling is obtained by the engagement projection 8 getting over the unevenness 7.
[0032]
In the above-described embodiment, the single frictional force applying member 6 is provided, but the frictional force applying member 6 may be divided as necessary. For example, when the support member-side bearing 4 or the memo table-side bearing 5 is divided into two or more in the axial direction, the frictional force imparting member 6 is provided according to each of the divided bearings. The frictional force can be dispersed in the axial direction. Alternatively, even when the support member side bearing 4 and the memo table side bearing 5 are not divided in the axial direction, the frictional force imparting member 6 may be divided and arranged in the axial direction. For example, in the present embodiment, the frictional force applying member 6 is a single member having a length of about 6 cm in the axial direction. It becomes. Specifically, for example, when it is desired to reduce the frictional force, the small pieces of the frictional force applying member 6 of about 1 cm are reduced to about 2 to 3 pieces, and when the frictional force is to be increased, about 7 to 8 pieces The frictional force can be changed by appropriately changing the friction force. Also, in the case of the memo table 1 which is long in the axial direction or the top plate 13 having a larger size, it is possible to obtain a desired frictional force by installing a large number of these small pieces. In addition, when the frictional force applying member 6 is divided in the axial direction, it is preferable to install the frictional force applying member 6 as far as possible within a range located at the inner corner of the bent portion 15. In such a case, it is easy to suppress movement of the top plate 13 such as rattling, twisting, and twisting (see FIG. 16).
[0033]
Further, in the above-described embodiment, the end of the top plate receiver 14 or the end of the pedestal receiving member 10 is bent, and the frictional force applying member 6 is arranged at the inner corner of the bent portion 15 (FIG. 3). Etc.), but this is only a suitable example for arranging the frictional force applying member 6 so as not to move, and is not limited to the case where the frictional force applying member 6 is arranged at the corner in this way. For example, even when such corners are not formed, a projection 17 (see FIG. 17) for fixing the frictional force applying member 6 or a concave portion (not shown) is provided, thereby providing a frictional force. The member 6 can be held at a predetermined position to apply a predetermined frictional force.
[0034]
In the above-described embodiment, the case where the memo stand 1 is installed on the right side of the chair 18 as viewed from the seated person has been described. However, it is needless to say that the memo table 1 can be installed on the left side of the chair 18 by making it symmetrical. .
[0035]
【The invention's effect】
As apparent from the above description, according to the supporting structure of the memo table according to the first aspect, the frictional force applying member is brought into sliding contact with the outer peripheral surface of the support shaft or the bearing, and the repulsive force for generating the necessary frictional force. Are caused to act radially on these support shafts and the like, so that friction can be generated by dispersing in a wide contact area regardless of whether the support shaft or the like is pipe-shaped or not. For this reason, even if the support shaft or the like repeatedly rotates, the frictional force applying member is less likely to be worn or deformed. Further, the loosening in the axial direction as in the structure for pressing in the axial direction is also rimless. Therefore, according to this support structure, it is possible to generate friction for braking the movement of the support shaft or the like or to maintain the stationary state, and to maintain this frictional force for a long period of time.
[0036]
In addition, in the case of such a support structure, the frictional force acting on the memo table via the support shaft or the like is almost uniformly determined by the specifications of the support structure. Therefore, it is possible to eliminate variations in the frictional force acting on the memo table from product to product. Further, it is not necessary to perform the tightening adjustment in the axial direction as in the related art.
[0037]
According to the support structure of the memo table of the second aspect, the frictional force imparting member is formed in a long belt shape in the axial direction, such as a support shaft, and wear and deformation are reduced, so that fluctuation of the frictional force is easily suppressed.
[0038]
Further, according to the memo table support structure of the third aspect, the frictional force applying member is formed to have a wide width in the circumferential direction such as a support shaft and the like, and wear and deformation are reduced, so that fluctuation of the frictional force is easily suppressed.
[0039]
Further, according to the support structure of the memo table of the fourth aspect, the support shaft or the like or the frictional force applying member can be rotated stepwise by the unevenness and the engagement projection. Therefore, when changing the inclination of the memo table, the inclination can be changed stepwise.
[0040]
Furthermore, according to the support structure of the memo table of the fifth aspect, since a resin molded product is used as the frictional force applying member, the shape and size of the member can be easily made uniform and the cost can be reduced. Further, since the same shape can be obtained by molding the frictional force imparting member, the same frictional force without variation among the products of the memo table can be obtained. In addition, if it is a resin product, it is easy to mold and can be cut with a cutter or scissors (scissors), so that the frictional force can be easily changed.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a support structure of a memo table according to the present invention.
FIG. 2 is a front view partially showing the structure of a support member.
FIG. 3 is a front view showing a supporting member, a top plate receiver rotatably supported, and the like.
FIG. 4 is a schematic view showing a top plate receiver and a support member side bearing of a memo table, and a frictional force applying member interposed therebetween.
FIG. 5 is a schematic view showing a state where the frictional force applying member in FIG. 4 is pressed.
FIG. 6 is a front view of a chair to which the present invention is applied.
FIG. 7 is a plan view of a chair.
FIG. 8 is a left side view of the chair.
FIG. 9 is a rear view of the chair.
FIG. 10 is a perspective view of a memo stand or the like showing a support structure according to another embodiment of the present invention.
FIG. 11 is a perspective view of a memo table.
FIG. 12 is a perspective view showing a state before assembly of a support member, a support shaft, and a frictional force applying member.
FIG. 13 is a partial cross-sectional view showing a structural example when a frictional force applying member is slidably contacted with a spindle.
FIG. 14 is a partial cross-sectional view showing a structural example when the frictional force applying member is hollow.
FIG. 15 is a partial cross-sectional view showing a frictional force applying member, irregularities provided on a support shaft, and an engagement protrusion.
FIG. 16 is a perspective view showing a case where the divided frictional force applying members are set apart from each other in the axial direction.
FIG. 17 is a diagram showing an example in which a projection for fixing a frictional force applying member is provided.
FIG. 18 is a perspective view of a chair with a memo table showing a conventional support structure for the memo table.
19 is a partially enlarged view of the chair shown in FIG.
[Explanation of symbols]
1 note table
2 Support members
3 spindle
4 Supporting member side bearing (bearing)
5 Bearings on memo table side (bearings)
6 Friction applying member
7 Unevenness
8 Engagement protrusion
18 chairs

Claims (5)

In a memo support structure for rotatably supporting a flip-up memo support on a support member, a support shaft rotatably supporting the memo support, and any of the memo support and the support member The bearing of the support shaft fixed to one of them, and a state in which the support or the support member of the memo stand and the support member on which the support shaft or the bearing is not fixed is pressed between the support shaft or the bearing. A support structure for a memo table, comprising: a frictional force applying member that intervenes and slides on an outer peripheral surface of the support shaft or the bearing to generate friction between the memo table and the support member. The support structure for a memo table according to claim 1, wherein the frictional force applying member is a band-shaped member that is long in the axial direction of the support shaft or the bearing. The support structure for a memo table according to claim 1, wherein the frictional force applying member has a wide shape in a circumferential direction of the support shaft or the bearing. 2. The support structure for a memo table according to claim 1, wherein the frictional force applying member is provided with irregularities on the surface thereof, and the support shaft or the bearing is provided with an engagement projection fitted into the irregularities. 2. A support structure for a memo table according to claim 1, wherein a resin molded product is used as said frictional force applying member.

Images