JP2019042108A - Armrest device - Google Patents

Abstract

To increase a commercial value in an armrest device enabling horizontally moving an elbow pad.SOLUTION: An armrest device includes an elbow pad body 24, a slide auxiliary body 37, a posture holding body 39, and a pressing member 31. The pressing member 41 is unrotatably fixed to a boss body 33 by a machine screw 43. The slide auxiliary body 37 and the posture holding body 39 are rotatable and longitudinally unslidable. Holding a front position of an elbow pad 9 is performed by an engaging pawl 54 formed in the slide auxiliary body 37, and an irregular engagement receiving part 56 formed in the elbow pad body 24. An elastic body 57 is arranged in a holding hole 58 formed in the undersurface of the slide auxiliary body 37. Light resistance is given to longitudinal sliding of the elbow pad 9 due to that the elastic body 57 is abutted on the bottom face of the elbow pad body 24 in a state of being elastically deformed. With this, the elbow pad 9 longitudinally slides with gentle movement, and as a result of this, a high-class feeling is created so as to improve a commercial value.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a movable armrest device that can move an elbow rest horizontally.

  In the movable armrest device, there are various types of movement of the armrest, such as a type that only slides back and forth, a type that rotates horizontally in addition to the front and back slide, and a type that slides left and right in addition to the front and back slide.

  In any case, it is necessary to hold the elbow rest at a desired position and posture. In order to maintain the position and the posture, generally, an engaging means using an elastic body such as a spring or rubber is used. As an example, in Patent Document 1, rubber and An engaging means using a pin is disclosed, and the elbow rest is held at a desired front-rear position by fitting the pin into a holding groove formed in the elbow rest main body. On the other hand, Patent Document 2 discloses that a resistance is given to the front and rear slides of the armrest by a rotary damper.

Japanese Patent No. 4383907 Japanese Patent No. 5249604

  In order to secure the function of holding the elbow rest in a desired position, an engaging means using an elastic body is sufficient, but in the type as in Patent Document 1, the elbow rest simply moves by deforming the elastic body. However, the movement of the elbow rest was awkward and there was a disadvantage that it was inferior in luxury.

  On the other hand, in the type of Patent Document 2, since the resistance by the damper is given to the slide of the elbow rest, it can be said that the elbow rest can move moistly and create a high-class feeling, but the rotary damper is expensive. Therefore, there is a problem that the cost increases.

  The present invention has been made to improve the current situation.

The present invention has various configurations, and typical examples are specified in the respective claims. Of these, in the invention of claim 1,
“It has a base provided at the upper end of the elbow post, and an elbow rest main body mounted horizontally on the base,
Between the members that move relative to each other by the horizontal movement of the elbow rest body, a rubber-like elastic body that provides resistance to the horizontal movement of the elbow rest body is disposed.
It is the composition.

  In the present invention, “rubber-like” means that it does not bend and deform like a metal spring or a resin spring, but compresses and deforms against elasticity, and in addition to the rubber itself, a resin such as an elastomer. The system type is also included. The elastic body may be disposed between the elbow rest main body and the base, or may be disposed between the elbow rest main body and a fixed member (a member that does not move horizontally). Therefore, the “relatively moving member” includes an elbow rest main body.

The invention of claim 2 is the invention according to claim 1,
The elbow rest body has a shape that is long in the front-rear direction and is open upward, and is attached to the base so as to be slidable back and forth.
Inside the elbow rest main body, a slide auxiliary body that is non-slidably attached to the base is arranged to allow front and rear sliding of the elbow rest main body,
The slide auxiliary body and the elbow pad main body are provided with position holding means for holding the front and rear positions of the elbow pad main body, and the elastic body is applied to the slide auxiliary body against the elbow pad main body. Installed to touch.

  The invention of claim 3 embodies claim 2, and in this invention, the elastic body is in the form of a column or a ball, and is capable of rolling by a longitudinal slide of the elbow rest body. It is attached to the slide auxiliary body.

  In the present invention, because the elastic body compresses and deforms, resistance is given to the horizontal movement of the elbow rest, so when moving the elbow rest horizontally, the elbow rest is lightly sticking to the base, so it is a moist movement It can be. Therefore, it is possible to create a sense of quality and increase the commercial value. Further, it is possible to prevent rattling of the elbow pads, and in this respect as well, the commercial value can be increased. In addition, unlike Patent Document 2, an expensive damper device is unnecessary, so that the cost can be suppressed.

  The movable elbow rest that moves horizontally needs to be held at a desired position (front-rear position or left-right position) or a horizontal posture, and an engagement means is provided there. In the present invention, it is possible to use an elastic body as a component of the engaging means. However, in claim 2, the application of resistance by the elastic body is provided separately from the engaging means.

  As described above, the engagement means for holding the elbow pads in a desired state and the means for imparting resistance to the movement of the elbow pads are configured separately, thereby ensuring the holding of the position of the elbow pads. Moist movement can be given to the back and forth movement of the elbow rest.

  If the structure of Claim 3 is employ | adopted, the movement of an elbow rest can be made smooth by an elastic body rolling. Therefore, the elbow rest can be smoothly moved without giving too much weight while ensuring a moist movement by applying an appropriate resistance.

It is a figure which shows the external appearance of the chair to which the armrest apparatus of embodiment is applied, (A) is a perspective view, (B) is a front view, (C) is a top view. (A) is the perspective view which looked at the armrest apparatus of 1st Embodiment from the downward direction, (B) is the isolation | separation perspective view of a fixing | fixed part and a movable part, (C) is the isolation | separation perspective view for mainly showing a height adjustment mechanism. , (D) is a perspective view of the lifting elbow post with the lever mounted, (E) is a perspective view of the upper end of the lifting elbow post, and (F) is a perspective view of the lever and the height adjusting rod separated. is there. (A) is the perspective view from the lower part which shows the relationship between an elbow rest, a base, and the rod for height adjustment, (B) is the isolation | separation perspective view of an elbow support | pillar. (A) is the isolation | separation perspective view which looked at the whole from the top, (B) is the isolation | separation perspective view of a base and a raising / lowering elbow support | pillar, (C) is the isolation | separation perspective view of a one part component. (A) The isolation | separation perspective view which looked at the whole from the downward direction, (B) is the isolation | separation perspective view which looked at some members from the downward direction, (C) is the isolation | separation perspective view of the member which comprises the external appearance of an elbow rest. It is a vertical side view. (A) is the isolation | separation perspective view of the principal part, (B) is a perspective view of a cover board. An exploded perspective view of the main part, (B) is a plan view showing the front-rear position holding means. (A) is a perspective view from below for showing the front and rear position holding means and the horizontal posture holding means of the elbow rest, and (B) is a perspective view showing the front and rear position holding means. (A) is an exploded perspective view showing the horizontal posture holding means, (B) is a plan view showing the horizontal posture holding means. It is a top view which shows a horizontal turning angle control means. It is a figure which shows 2nd Embodiment, (A) (B) is an isolation | separation perspective view, (C) is a top view of the principal part, (D) is an isolation | separation perspective view of an elbow rest main body and a slide auxiliary body. It is the vertical front view cut | disconnected in the turning center location. It is a figure which shows 3rd Embodiment, (A) is a separate perspective view, (B) is a principal part top view.

(1). Outline of First Embodiment Next, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the armrest device of this embodiment is mounted on a rotary chair that is frequently used in offices. That is, the chair includes a seat 1, a leg device 2, a backrest 3, and a back frame 4 that can be tilted backward, and the backrest 3 is attached to the back frame 4. In the present embodiment, the armrest device is attached to the front portion of the back frame 4. The leg device includes a plurality of casters, but only one caster is displayed.

  As shown in FIGS. 2A and 2B, the armrest device includes a lower fixed arm 5 fixed to the back frame 4, a hollow fixed elbow support 6 integrally provided on the outer end of the lower fixed arm 5, and a fixed A movable elbow strut 7 fitted to the elbow strut 6 so as to be adjustable in height is fixed. A base 8 having a circular shape in plan view is fixed to the upper end of the movable elbow strut 7, and the base 8 is movable in the longitudinal direction. The elbow rest 9 is attached so as to be movable in the longitudinal direction and horizontally rotatable.

  As clearly shown in FIG. 3, a halved sleeve 10 is mounted on the outer surface of the movable elbow support 7 so as not to move up and down from the front and rear. A seesaw-type height adjusting rod 11 is disposed inside the movable elbow support 7. The rod 11 is pivoted back and forth around a pivot pin 12 that is provided at a position slightly below the intermediate height and directed outwardly from left and right, and an engaging claw 13 projects backward from the lower end. The engaging claw 13 is urged backward by a spring piece 14.

  A bearing portion (not shown) into which the pivot pin 12 of the rod 11 is fitted from below is formed in the movable elbow support 7. The engagement claw 13 is engaged with and disengaged from an engagement hole 15 (see FIG. 3B) formed in the rear sleeve 10 through a long hole formed in the rear wall of the movable elbow support column 7. Note that the sleeve 10 has the same shape in both the front and the back, thereby eliminating directionality.

  A lever 16 is attached to the upper end of the rod 11. As shown in FIGS. 2C and 2F, left and right support shafts 17 project from the rear end of the lever 16, and the left and right support shafts 17 are bearing portions formed in the upper end of the movable elbow support 7. 18 (see FIGS. 3D and 3E) from above. Therefore, the lever 16 can rotate up and down around the support shaft 17. As shown in FIG. 2 (F), a support shaft 19 protruding left and right is formed at the upper end of the rod 11, and the support shaft 19 is located behind the pocket-type holding portion 20 formed on the lower surface portion of the lever 16. It is inserted from.

  When a person sitting on the chair puts the fingertip on the lever 16 and pulls it upward, the rod 11 rotates about the pivot pin 12, whereby the engaging claw 13 at the lower end of the rod 11 engages with the sleeve 10. Remove from hole 15. Thereby, the height of the elbow rest 9 can be adjusted. The upper end portion of the movable elbow strut 7 is a diameter-expanded portion 7a that expands in a trumpet shape, and a notch 21 that exposes the lever 16 is formed in the diameter-expanded portion 7a so as to open upward.

(2). Outline of elbow rest Next, the structure of the elbow rest 9 according to the first embodiment will be described. As shown in FIGS. 4 and 5, the elbow rest 9 has an elbow rest main body 24 and an elbow rest upper member 25 as front and rear longitudinal members constituting the appearance. A pad material 26 made of a soft material is attached. While the elbow rest main body 24 has an upward opening shape, the elbow rest upper member 25 has a shallow tray shape with a downward wall on the outer periphery. As shown in part in FIG. They are integrally connected by engagement of the pawl 27 and the engagement hole 28.

  As shown in FIGS. 4 and 5, the aforementioned base 8 is fixed to the upper end of the movable elbow support 7 with a screw 30. In this case, the lower surface of the base 8 is integrally provided with downward foot portions 31 located on the left and right side portions and the rear portion, while the foot portion 31 can come into contact with the movable elbow strut 7 from the horizontal direction. A receiving portion 32 is formed. The foot portion 31 has a pair of side pieces 31a and is U-shaped in a bottom view, and the lower end portion of the side piece 31a is an inclined portion 31b. The foot portion 31 may have a rectangular bar shape. The base 8 is, for example, a zinc die cast product and has high strength. The movable elbow support 7 is an aluminum die-cast product, for example.

  A circular boss body 33 is integrally provided at the center of the base 8. On the bottom plate of the elbow rest main body 24, a long hole 34 that fits into the boss body 33 is formed long in the longitudinal direction of the elbow rest main body 24. The elbow rest main body 24 overlaps the ring plate 29 from above via the upper cover plate 35 and the lower cover plate 36. Therefore, the elbow rest main body 24 is movable in the longitudinal direction by a dimension obtained by removing the outer diameter of the boss body 33 from the full length of the long hole 34, and can be horizontally swiveled around the axis of the boss body 33.

  The ring plate 29 is for smooth sliding and horizontal turning of the elbow rest main body 24, and is made of resin such as POM resin. The ring plate 29 overlaps with the base 8 from above, and a downward edge portion 29a that fits into the notch 21 formed in the movable elbow support column 7 protrudes downward from a part thereof. Further, as shown in FIG. 6, positioning pins 29 b provided on the ring plate 29 are fitted into positioning holes 8 a formed in the base 8.

  The elbow rest main body 24 is opened upward, and a slide auxiliary body 37 having a recess 38 opened upward in a substantially oval shape in plan view is fitted into the recess 38 of the slide auxiliary body 37 from above. The posture holding body 39 and the pressing member 41 fitted in the center hole 40 of the posture holding body 39 are arranged. The pressing member 41 has a flange 42 that covers the posture holding body 39 from above, and is fixed to the boss body 33 by screws 43.

  In this case, as shown in FIG. 4A, a four-leaf (non-circular) engagement protrusion 44 is integrally provided on the upper end of the boss body 33, while as shown in FIG. The pressing member 41 is formed with an engagement hole 45 that is non-rotatably fitted to the engaging protrusion 44. Therefore, the pressing member 41 cannot rotate with respect to the boss body 33 (or with respect to the base 8). Is held in.

  The elbow rest main body 24 is overlapped with a slide auxiliary body 37 from above, and a posture holding body 39 is overlapped with the slide auxiliary body 37 from above, and the posture holding body 39 cannot be moved upward by the flange 42 of the pressing member 41. Is held in. For this reason, the elbow rest 9 is held so as not to be able to move upward, and as described above, it can be swiveled horizontally and slidable in the longitudinal direction.

  The slide auxiliary body 37 has a function of guiding the back and forth movement of the elbow rest 9 (more precisely, the elbow rest main body 24) and a function of holding the elbow rest 9 in an arbitrary front and rear position. The holding body 39 has a function of holding the elbow rest 9 in an arbitrary turning posture, and the pressing member 41 has a function of regulating the turning angle of the elbow rest 9. These will be described later.

(3). Finger pinching prevention structure As described above, the elbow rest main body 24 has a long hole 34 for allowing front and rear sliding (sliding in the longitudinal direction). For example, as shown in FIG. As shown, a downward recess 48 surrounded by downward ribs 47 is formed on the lower surface of the elbow rest main body 24, and the above-described upper cover plate 35 and lower cover plate 36 are formed in the downward recess 48. They are arranged so that they can move relative to each other in the longitudinal direction. Therefore, the lengths of the upper and lower cover plates 35 and 36 are shorter than the length of the recess 48, and the upper cover plate 35 is shorter than the lower cover plate 36.

  As clearly shown in FIG. 7 (A), upward side ribs 49a project from the left and right longitudinal side edges of the lower cover plate 36, and the upper cover plate 35 is not laterally displaced between the left and right guide ribs 49. And it arrange | positions so that it can move relatively in a longitudinal direction. The lower cover plate 36 is formed with a longitudinal rib 49b on which the upper cover plate 35 is placed, and a stopper rib 49c that regulates the front-rear relative movement position of the upper cover plate 35. On the other hand, on the upper surface of the upper cover plate 35, vertically long ribs 35a for smooth sliding with the elbow rest main body 24 are formed.

  The upper and lower cover plates 35 and 36 have elongated holes 50 and 51 so that they can move relative to the elbow rest main body 24. The downward ribs 47 of the elbow rest main body 24 are in contact with the ring plate 29 from above on the left and right outer sides of the cover plates 35 and 36. When the upper and lower cover plates 35 and 36 are moved at different timings in conjunction with the front and rear slide of the elbow rest main body 24, the elongated hole 34 of the elbow rest main body 24 can be always closed.

(4). Front / rear position holding means and front / rear slide resistance applying means As described above, the elbow rest main body 24 is opened upward, for example, as shown in FIGS. An oval slide auxiliary body 37 is arranged. Since the slide auxiliary body 37 is fitted in the boss body 33, the elbow rest main body 24 is guided by the slide auxiliary body 37 and slides in the longitudinal direction. Further, the slide auxiliary body 37 and the elbow rest main body 24 horizontally turn together. Therefore, the slide auxiliary body 37 and the elbow rest main body 24 are in a relationship in which relative rotation is impossible and relative slide is free.

  As shown in FIGS. 8 and 9 (see also FIG. 11), the left and right longitudinal side surfaces of the slide auxiliary body 37 are formed with notches 53 at the front and rear middle portions thereof, and the notches 53 are L-shaped in plan view. Engaging claws 54 are provided. An engaging protrusion 55 is formed at the tip (free end) of the engaging claw 54 so as to protrude toward the inner surface of the recess in the elbow rest main body 24. On the other hand, on the left and right inner surfaces of the recess in the elbow rest main body 24, an engagement receiving portion 56 having a concave and convex shape in plan view with which the engagement projection 55 abuts is formed long along the longitudinal direction of the elbow rest main body 24. .

  The engagement protrusion 55 is engaged with and disengaged from the recess of the engagement receiving portion 56 due to the elastic deformation of the engagement claw 54. However, since the pitch of the engagement receiving portion 56 is fine, The longitudinal position) can be adjusted almost steplessly. In addition, the engagement protrusion 55 may be elastically deformed or may not be elastically deformed in a state where the engagement protrusion 55 is fitted in the recess of the engagement reception part 56 (the engagement reception part 56). It is sufficient if it is elastically deformed when it gets over the protrusion of.

  If only the front and rear positions of the elbow rest 9 are held at a desired position, only the engaging means including the engaging claws 54 and the engagement receiving portions 56 is sufficient. In this embodiment, the front and rear slide of the elbow rest 9 is sufficient. As damper means for imparting light resistance, a plurality (four) of elastic bodies 57 are arranged between the slide auxiliary body 37 and the elbow rest main body 24 as clearly shown in FIG.

  The elastic body 57 is made of a rubber-based or elastomer-based elastic material. In the embodiment, the elastic body 57 is formed in a columnar shape, and is formed on the lower surface of the slide auxiliary body 37 in a posture in which the axis is horizontally horizontal. It is fitted in the holding hole 58. Therefore, it is possible to roll along with the back-and-forth slide of the elbow rest main body 24 (however, it is not necessary to roll). Further, a pair of left and right guide ribs 59 are formed on the bottom surface of the recess in the elbow rest main body 24 to guide the elastic body 57 so as not to be laterally displaced.

  As described above, the slide auxiliary body 37 is pressed downward by the pressing member 41, and the elastic body 57 is lightly deformed. Therefore, when the elbow rest 9 is slid back and forth (the elbow rest main body 24), the elastic restoring force of the elastic body 57 appears as a light resistance against the longitudinal movement of the elbow rest 9. Moreover, the backlash of the elbow rest 9 does not occur. For this reason, a moist movement is given to the slide of the elbow rest 9, and a high-class feeling can be created.

  In the embodiment, the elastic body 57 is disposed on the lower surface of the slide auxiliary body 37, but the elastic body (damper member) 57 may be disposed on the side surface of the slide auxiliary body 37. It is also possible to form fine pitch irregularities (sawtooth irregularities, corrugated irregularities, knurled rough surfaces, etc.) on the part of the elbow rest main body 24 where the elastic body 57 contacts (rolls). It is. In this case, since the elastic body 57 does not slip, the moist feeling movement can be further ensured.

(5). Plane View Posture Holding Means If the elbow rest 9 is configured to be able to turn horizontally, it must be held in a desired posture. Therefore, a planar view posture holding means for the elbow rest 9 is provided. This point will be described mainly with reference to FIGS. As described above, the posture holding body 39 is fitted into the recess 38 of the slide auxiliary body 37 from above, and the central hole 40 in which the cylindrical portion of the pressing member 41 is fitted is formed in the posture holding body 39. ing.

  The posture holding body 39 includes a front and rear elastic body accommodating recess 62 formed in a triangular shape (or a trapezoidal shape) so as to narrow toward the center hole 40, and the elastic body accommodating recess 62 and the center. The front and rear constricted communication parts 63 communicating with the hole 40 are formed so as to open upward, and an elastic body 64 such as rubber is fitted into the elastic body accommodating recess 62, and the constricted communication part 63 is inserted into the constricted communication part 63. An engagement body 65 having a plan view made of resin or metal is fitted.

  On the other hand, a pair of rack-shaped concavo-convex portions 66 with which the engaging body 65 abuts elastically is formed on the outer peripheral surface of the cylindrical portion of the pressing member 41, and the engaging body 65 is formed in one groove of the concavo-convex portion 66. By fitting, the horizontal posture of the elbow rest 9 is integrally maintained. When a certain level of horizontal turning force is applied to the elbow rest 9, the engagement body 65 can be detached from the groove of the concavo-convex portion 66, and the elbow rest 9 can be swung to an arbitrary posture. As shown in FIG. 10 (B), the posture holder 39 turns horizontally within the range where the concavo-convex portion 66 is provided, but the maximum turning angle θ is about 90 degrees.

(6). Turning angle restricting means of the elbow rest As described above, the elbow rest 9 can be swiveled horizontally in an angle range of about 90 degrees, but in this embodiment, the turning angle restricting function of the elbow rest 9 is The pressing member 41 and the slide auxiliary body 37 are in charge. This point will be described with reference to FIGS.

  As shown in FIG. 6, the flange 42 of the pressing member 41 enters the inside of the recess 38 of the slide auxiliary body 37. As clearly shown in FIG. 11, the recess 38 of the slide auxiliary body 37 has parallel left and right longitudinal side surfaces 38 a, but the flange 42 of the pressing member 41 is in contact with the longitudinal side surface 38 a of the recess 38. A pair of stopper portions 67 in contact with each other is formed.

  Since the stopper portion 67 has two abutting surfaces 67a and 67b orthogonal to each other, as shown in FIG. 11, the concave portion can be depressed regardless of whether the slide auxiliary body 37 is fully turned left or right. The left and right long side surfaces 38 a of 38 abut against the stopper portion 67.

(7) Second Embodiment Next, a second embodiment shown in FIGS. 12 and 13 will be described. The basic components of this embodiment are the same as those of the first embodiment, and include an elbow rest main body 24, a slide auxiliary body 37, a posture holding body 39, and a pressing member 41. Elements common to the first embodiment are denoted by the same reference numerals, and description thereof is omitted unless necessary.

  In this embodiment, left and right elastic bodies 57 are used as means for imparting resistance to the front and rear slide of the elbow rest 9. The elastic body 57 is attached to a pocket portion 70 projecting downward from the slide auxiliary body 37. That is, the pocket part 70 has a bottom plate and is formed in an open state on the upper side and the left and right outer sides, and the elastic body 57 is fitted into the pocket part 70 from above with a posture in which the axis is in a vertical posture. . A plurality of elastic bodies 57 may be arranged on the left and right.

  As shown in FIG. 13, the elbow rest main body 24 is provided with a longitudinally extending rail portion 71 that abuts against the elastic body 57 from the left and right outer sides. In FIG. 12A, the rail portion 71 is not shown.

  In the present embodiment, the front / rear position holding means of the elbow rest 9 is not clearly shown in the drawing, but is formed on the outer surface of the rail portion 71 in the same shape as the engagement receiving portion 56 of the first embodiment in plan view. On the other hand, as clearly shown in FIG. 12 (D), an elastic engagement body 72 located outside the rail portion 71 is projected downward from the slide auxiliary body 37, as shown in FIG. The elastic engagement body 72 is engaged with the engagement receiving portion 56. Therefore, in this embodiment, the rail part 71 serves as both the engaging means for maintaining the position and the means for imparting resistance to the front and rear slide of the elbow rest 9.

  In this embodiment, since the elastic body 57 is in contact with the rail portion 71 of the elbow rest main body 24 from the side, even if there is a vertical dimension error of the slide auxiliary body 37 or a screw 43 is tightened, the variation is affected. There is an advantage that a certain resistance can be given to the front and back slide of the elbow rest 9 without being done.

  In the present embodiment, as the horizontal posture holding means of the elbow rest 9, an outward engaging portion 73 is formed on a part of the slide auxiliary body 37, while the slide auxiliary body 37 has an unevenness that allows the engaging portion 73 to be fitted and detached. The portion 66 is formed so as to spread in the circumferential direction. The engaging portion 73 is a resin spring system formed in a belt shape through an arcuate hole, and the belt-like portion is bent and deformed with the rotation of the elbow rest 9, and is engaged with and disengaged from the uneven portion 66.

  Further, in this embodiment, as the turning angle regulating means of the armrest 9, a stopper portion 67 that protrudes on the opposite side to the engaging portion 73 is formed on the posture holding body 39, and this stopper portion 67 is used as a slide assist. It is applied to the longitudinal side surface 38 a of the body 37. Therefore, the pressing member 41 is a simple flat plate (washer).

(8). Third Embodiment FIG. 14 shows a third embodiment which is a modification of the second embodiment. In this third embodiment, the front / rear position holding means, the front / rear slide resistance applying means, and the turning angle regulating means are the same as those of the second embodiment, and the difference from the second embodiment is that of the plan view posture holding means. It is the point of a structure and a turning resistance provision means.

  First, the planar view posture holding means will be described. Like the second embodiment, the concave and convex portion 66 is formed on the front surface of the inner periphery of the recess 38 formed in the slide auxiliary body 37, while the posture holding body. 39, a downward engaging portion 74 that engages with the concavo-convex portion 66 is formed.

The engaging portion 74 can be deformed by forming the front portion of the posture holding body 39 in a mountain shape in plan view and forming a groove on the lower surface. Therefore, the engaging portion 74 is located not in the entire thickness of the posture holding body 39 but in the substantially lower half portion. Therefore, the concave and convex portion 66 of the slide auxiliary body 37 is formed in a substantially lower half portion of the inner periphery of the recess 38, thereby allowing the deformation of the engaging portion 74.

  Next, as a feature of the present embodiment, as a turning resistance imparting means, an area on the opposite side of the engaging portion 74 of the posture holding body 39 is formed on the arc surface 39a at the same distance from the rotation axis, while the slide A lateral groove hole 75 communicating with the recess 38 is formed in a portion of the auxiliary body 37 opposite to the concave and convex portion 66, and a cylindrical elastic body 76 is fitted into the lateral groove hole 75 to be attached. The holding body 39 is elastically applied to the arc surface 39a.

  Therefore, the elastic restoring force of the elastic body 76 acts as a resistance to the horizontal turning of the elbow rest 9, and a moist movement can be given to the turning of the elbow rest 9 by this resistance. In the embodiment, since the elastic body 76 has a cylindrical shape with the axial center in a vertical posture, the elastic body 76 can roll when the elbow rest 9 turns. Therefore, the elbow rest 9 can be smoothly turned in a state where an appropriate resistance is applied.

  If the arcuate surface 39a of the posture holding body 39 is formed in a rough surface such as an uneven shape with a fine pitch in a plan view or a knurled shape in an oblique lattice shape, the elastic body 76 is formed. Therefore, it is possible to provide a stable resistance over a long period of time.

(9). Others The present invention can be embodied in various other ways. For example, the armrest device of the embodiment can adjust the height of the armrest, but the armrest may be fixed only by horizontal movement. Accordingly, the elbow strut need not be in the form of a rod, and may have a horizontally long posture (the elbow strut and the base may be integrated).

  In the present invention, the horizontal movement of the elbow rest includes left and right slides. Therefore, it is possible to give resistance to the left and right slides with an elastic body. The number and arrangement positions of the elastic bodies can be arbitrarily set as necessary. It is also possible to form the elastic body in a ball shape.

  The present invention can actually be embodied in an armrest device. Therefore, it can be used industrially.

7 Movable elbow support 7
8 Base 24 Elbow pad body 25 Elbow pad upper member 33 Boss body 34 Elbow pad body slot 37 Slide auxiliary body 39 Posture holding body 41 Holding member 54 Engagement receiving portion constituting front / rear position holding means 57 Elastic body for imparting resistance to front / rear slide of elbow rest 58 Holding hole 59 Guide rib

Claims (3)

A base provided on the upper end of the elbow post, and an elbow rest main body horizontally attached to the base;
Between the members that move relative to each other by the horizontal movement of the elbow pad main body, a rubber-like elastic body that provides resistance to the horizontal movement of the elbow pad main body is disposed.
Armrest device. The elbow rest body has a shape that is long in the front-rear direction and is open upward, and is attached to the base so as to be slidable back and forth.
Inside the elbow rest main body, a slide auxiliary body that is non-slidably attached to the base is arranged to allow front and rear sliding of the elbow rest main body,
The slide auxiliary body and the elbow pad main body are provided with position holding means for holding the front and rear positions of the elbow pad main body, and the elastic body is applied to the slide auxiliary body against the elbow pad main body. Installed to touch,
The armrest device according to claim 1. The elastic body is in the form of a column or a ball, and is attached to the slide auxiliary body in a state where it can roll by a front-rear slide of the elbow rest main body,
The armrest device according to claim 2.

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