JP4263966B2 - Chair armrest equipment - Google Patents

Description

  The present invention relates to an armrest device for a chair.

  In the armrest device of the chair, the pad member against which the elbow or the like touches is directly placed on the elbow so that a soft sensation and an appropriate elastic sensation can be obtained when the elbow, forearm and hand (hereinafter referred to as “elbow etc.”) are placed. The elbow rest receiving body, which is composed of a soft cover material that hits the surface and the like and a hard core material located below the cover material and covered with a pad member, has a shallow saucer shape or a bifurcated shape with an open top surface. In addition, a predetermined space is formed between the pad member and the elbow rest receiving body bottom, and when the elbow or the like is placed on the pad member, the pad member has a certain strength due to the core material, There is one that sinks into the space (see Patent Document 1 or 2).

In addition to maintaining the space as described above, a mesh structure is interposed between the pad member surface material and the core material to increase the room for the soft surface material to sink relative to the hard core material. (See Patent Document 3).
JP 2000-333777 A Japanese Patent No. 3309273 JP 2000-333776 A

  However, each of the above techniques is such that the elbow rest receiving material is covered with a pad member, and the pad member is stretched on the elbow rest receiving material, so that the pad member sinks into the lower space. It is large and does not necessarily provide a satisfactory feeling of elbow rest.

  The present invention has been made in view of the above circumstances, and provides an armrest device for a chair that can provide an improved feeling of elbow rest, has a simple structure, and allows a pad member to be easily attached and detached. Objective.

According to the present invention, the above problem is solved as follows.
(1) In an armrest device of a chair in which an upper surface of an elbow rest receiving body is covered with a pad member made of an elastic material, the elbow rest receiving body is formed in a shallow saucer shape having an upper surface opened, and a peripheral edge of the pad member Is supported on the periphery of the elbow rest receiving body, and is suspended on the lower surface of the pad member until the lower end comes into contact with the bottom surface of the elbow rest receiving body, and is flexibly elastically bent by a load from above. of a plurality of ribs, by varying the length in the vertical direction of the each rib in the various locations of the pad member with each other, Ru at different repulsion by ribs when carrying the elbow or the like.

(2) In the above item (1), the rib is formed by a longitudinal rib disposed in the center in the left-right direction of the pad member and facing in the front-rear direction and a transverse rib facing in a direction intersecting with the longitudinal rib.

(3) In the above item (1) or (2), an upward protrusion is provided at a position corresponding to the rib at the bottom of the elbow rest receiving body so that the lower end of the rib contacts the horizontal top surface.

(4) In any one of the above items (1) to (3) , the vertical length of the central rib is made shorter than the vertical length of the side rib.

According to the present invention, the following effects can be achieved.
(1) According to the first aspect of the present invention, the pad member sinks into the lower space when the elbow or the like is applied thereto, but the rib supporting the pad member from below is going to be restored while buckling. In this way, the degree of sinking is not too large, and a good feeling of elbow rest can be obtained.
Moreover, since the repulsive force by a rib can be varied in each location, such as an elbow put on a pad member, a desired elbow contact feeling can be obtained in each location.

(2) According to the invention described in claim 2, the rib member extending vertically and horizontally can increase the resistance when the pad member sinks downward, can improve the feeling of touching the elbow, and The sinking allowance can be made uniform over the entire surface.

(3) According to the invention described in claim 3, when the elbow or the like is applied to the pad member and the rib buckles, the lower end of the rib does not slip and does not interfere with buckling, and there is no protrusion. Compared to the height of the ribs, the resistance to buckling is increased, and the elbow contact feeling can be improved. Moreover, the elbow rest receiving body can be reinforced by the protrusion.

(4) According to the fourth aspect of the present invention, the sinking margin of the central portion of the pad member small city, the uniformity of the subduction margin of the entire pad member may FIG Rukoto.

  FIG. 1 is a left side view of a chair provided with an armrest device for a chair according to a first embodiment of the present invention. In FIG. 1, the left side of the figure is the front. In the chair (1), the column (4) stands up from the central portion where the five legs (3) with casters (2) are integrated, and the seat (5) ) Is rotatably mounted in a horizontal plane. A seat back (6) is integrally formed with the seat (5).

  From the left and right sides of the seat portion (5), the armrest support rod (7) extends upward slightly tilted forward, and the upper end portion of the armrest support rod (7) has an elbow rest receiving body ( 8) extends in the front-rear direction. The elbow rest receptacle (8) can also be formed separately from the armrest support rod (7). On the elbow rest receiving body (8), a pad member (9) for gently placing a central portion for placing an elbow or the like is attached to constitute an armrest device (10).

  FIG. 2 is an enlarged vertical side view of a P portion in FIG. 1, and FIGS. 3 and 4 are a plan view and a bottom view of an elbow rest receiving body (8) and a pad member (9), respectively. 3 and 4, the lower side is the front of the elbow rest receiving body (8) and the pad member (9).

  The elbow rest receiving body (8) is in the shape of a shallow saucer that is elongated in the front-rear direction and has an open upper surface, and a pad member (9) that has an elbow rest receiving body (8) upside down. A space (11) is formed inside the elbow rest receiving body (8) by covering and covering the elbow rest receiving body (8) with each other at the peripheral edge.

  The pad member (9) is formed of a rubber-like elastic material. When an elbow or the like is placed on the pad member (9), the pad member (9) can be bent toward the lower space (11). On the lower surface of the pad member (9), there is one vertical rib (12) facing the front-rear direction at the center in the left-right direction, and three points facing the direction intersecting with the vertical ribs at three points in the front-rear direction. The lateral ribs (13) of the books are formed integrally with each other.

  The elbow rest receiving body (8) has the top surface horizontal where the tips of these ribs (12) (13) abut at positions corresponding to the ribs (12) (13) of the pad member (9). It has an upward ridge (14). A total of seven spaces partitioned by these ridges (14) are provided with one boss (16) having insertion holes (15). These insertion holes (15) serve as receptacles for insertion plugs (17) formed at corresponding positions of the pad member (9).

  5 is an enlarged end view taken along the line VV of FIG. 2, and FIG. 6 is an exploded end view of FIG. The insertion plug (17) has a cylindrical shape, and a plurality of annular tongue pieces (17a) which are inclined so as to expand toward the root side are formed on the outer peripheral surface. Therefore, the insertion plug (17) has a structure that is easy to insert into the insertion hole (15) but is difficult to withdraw, and the pad member (9) is attached to the elbow rest receiving body (8). It is firmly attached.

  7 is an enlarged end view taken along line VII-VII of FIG. 2, and FIG. 8 is an exploded end view of FIG. FIG. 9 shows a state where the pad member is deformed in the end view of FIG.

  When the elbow or the like is not placed on the vertical rib (12), the vertical rib (12) is in contact with the protrusion (14) while maintaining a vertical state. Therefore, the vertical rib (12 ′) buckles between the ridges (14). At this time, since the top surface of the ridge (14) is horizontal, the vertical rib (12 ') slips off the top surface of the ridge (14) so that no buckling occurs against the downward deflection. There is nothing wrong. The ridge (14) can also be used to adjust the vertical length of the ribs (12) (13).

  Although the pad member (9 ′) sinks downward, the vertical rib (12 ′) serves as a support, so that the degree of the sink is small. Further, since the longitudinal rib (12 ′) attempts to recover its buckling, an appropriate elbow rest feeling can be obtained through the pad member (9 ′).

  FIG. 10 is a longitudinal end view of an armrest device for a chair according to a second embodiment of the present invention. In this embodiment, since the pad member (9) is provided with three vertical ribs (21) having the same height, the resistance against the downward deflection of the pad member (9 ') and the vertical ribs The buckling resilience of (21 ′) is stronger than in the previous embodiment. Therefore, the armrest device of this embodiment is suitable when a strong sense of armrest is required.

  FIG. 11 and FIG. 12 are respectively an exploded longitudinal end view and a modified longitudinal end view of the armrest device according to the third embodiment of the present invention. In this embodiment, the pad member (9) is provided with three vertical ribs as in the second embodiment, but the central vertical rib (31a) has vertical ribs (31b) on both sides thereof. The length in the vertical direction is shorter than that. Therefore, when the elbow is applied, the longitudinal ribs (31a ') having a short vertical length at the central part where the pad member sinks most at the side where the pad member sinks most are located on the side where the recovery force is not so much sinking. It is greater than the resilience from buckling of (31b '). Therefore, a uniform repulsive force can be obtained as the entire armrest device.

  Note that the length of the rib in the vertical direction can be variously changed depending on which part of the pad member a strong elbow contact feeling is desired.

It is a left view of a chair provided with the armrest device of the chair concerning a 1st embodiment of the present invention. It is an expansion vertical side view of the P section in FIG. It is an enlarged plan view of the elbow rest receiving body in the armrest apparatus of the chair shown in FIG. It is a bottom view of the pad member covered with the elbow rest receiving body of FIG. A line V-V enlarged longitudinal sectional view of FIG. It is a decomposition view of Fig. Is a VII-VII line enlarged longitudinal sectional view of FIG. It is a decomposition view of Fig. It is a longitudinal sectional view showing a deformed state of the pad member shown in FIG. It is a longitudinal sectional view showing a deformed state of the armrest device of the chair according to the second embodiment of the present invention. Is an exploded longitudinal sectional view of the armrest device of the chair according to the third embodiment of the present invention. Figure 11 is a longitudinal sectional view showing a deformed state of the shown to the armrest device.

Explanation of symbols

(1) Chair
(2) Casters
(3) Leg
(4) Prop
(5) Seat
(6) Backrest
(7) Armrest support rod
(8) Elbow rest
(9) (9 ') Pad member
(10) Armrest device
(11) Space
(12) (12 ') Vertical rib
(13) Horizontal rib
(14) Projections
(15) Insertion hole
(16) Boss
(17) Plug-in plug
(17a) Elastic tongue
(21) (21 ')
(31a) (31a ') (31b) (31b') Longitudinal rib

Claims (4)

In the armrest device of the chair in which the upper surface of the elbow rest receiver is covered with a pad member made of an elastic material,
The elbow rest receiver is formed in a shallow saucer shape with an upper surface open, and the periphery of the pad member is supported on the periphery of the elbow rest receiver, and the lower end is on the lower surface of the pad member. A plurality of flexible ribs that are suspended until they contact the bottom surface of the pad and are elastically bent by a load from above are provided , and the lengths of the ribs in the vertical direction at different positions of the pad member are different from each other. Thus, the armrest device for a chair is characterized in that the repulsive force due to the ribs when the elbow is placed is varied .   The armrest device for a chair according to claim 1, wherein the rib is formed by a longitudinal rib disposed in the center in the left-right direction of the pad member and facing in the front-rear direction and a lateral rib facing in a direction intersecting with the longitudinal rib.   The armrest device for a chair according to claim 1 or 2, wherein an upward protrusion is provided at a position corresponding to the rib at the bottom of the elbow rest receiving body so that the lower end of the rib comes into contact with a horizontal top surface. The armrest device for a chair according to any one of claims 1 to 3, wherein the length in the vertical direction of the rib near the center is shorter than the length in the vertical direction of the rib near the side.

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