JP5837764B2 - Chair hanger equipment - Google Patents

Description

  The present invention relates to a chair hanger device.

  When attaching a hanger device to a chair, it may be attached to the back of the backrest. In this case, for example, as described in Patent Documents 1 to 3, the receiving member is fixed to the back surface of the backrest with a screw, and the hanger member is attached to the receiving member.

Japanese Utility Model Publication No. 4-32137 Japanese Patent No. 4046393 Japanese Patent No. 4061047 JP 2009-1112727 A

  Now, the hanger device is constituted by the receiving member and the hanger member in order to make it possible to adjust the height and posture of the hanger member, to hide the fixing screw, or in manufacturing ( There are various requests for processing. In any case, conventionally, the receiving member is exposed so that it can be seen by a person while standing or sitting normally. However, if the receiving member is exposed, the aesthetic appearance may be impaired.

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

The present invention is specified in each claim. Among these, the hanger apparatus of Claim 1 has the receiving member fixed to the back surface of a backrest, and the hanger member attached to the said receiving member, The said receiving member is the base of the said hanger member as a whole. either covered, or part content excluding the lower surface is covered with the base of the hanger member.

The hanger device according to a second aspect is the fitting according to the first aspect, wherein the base of the receiving member and the hanger member are fitted to each other when the hanger member is moved downward to hold the both in front, rear, left, and right. and covering means, the caught due to fit the fits and engaging means are provided for holding the disabled escape upwards said hanger member, said receiving member covering part content excluding the lower surface at the base of the hanger member It has been broken.

The hanger device according to claim 3 is the hanger device according to claim 1 or 2, wherein the receiving member is fixed to the backrest with a screw screwed from the front side of the chair, and the screw is screwed into the receiving member. A pocket portion for holding the nut is opened upward, and the upper surface of the receiving member is covered with a base portion of the hanger member from above.

The hanger device according to a fourth aspect of the present invention is the hanger device according to any one of the first to third aspects, wherein the hanger member rises obliquely upward from the left and right ends of the left and right laterally long bases while widening the gap between each other. It has an inverted trapezoidal loop structure.

  According to the present invention, since the receiving member is hidden and cannot be seen by the human eyes, it is possible to prevent the appearance from being deteriorated due to the exposure of the receiving member. It should be noted that the lower surface of the receiving member does not touch the human eye in a normal state where a person stands or sits down, so that the lower surface of the receiving member is exposed downward does not affect the beauty. Therefore, in the present invention, the receiving member may be covered with the base portion of the hanger member so that at least a portion excluding the lower surface is hidden when attached to the backrest.

  Also, since the user does not touch the receiving member directly, there is no inconvenience even if the receiving member is not surface-treated or given an appearance that takes aesthetics into consideration, and the screw screwed into the receiving member is hanger. Even if it is exposed in the state before the installation of the member, there is no consideration such as injury of the finger.

  Various means for attaching the hanger member to the receiving member can be adopted. However, if the configuration of claim 2 is adopted, the hanger member only needs to be moved downward from above and fitted into the receiving member, so that the attaching operation is very simple. .

  The receiving member and the hanger member often employ a resin molded product, but the structure in which the screw is directly screwed into the receiving member often lacks strength. Furthermore, when the nut is embedded by the insert molding method, not only the manufacturing cost is increased, but also separation after disposal is troublesome. In this respect, when the configuration in which the nut is attached to the pocket portion as in claim 3, high strength can be secured without impairing the ease of processing of the receiving member and the ease of separation after disposal. And since the pocket part is covered from the base of the hanger part from the top, the problem that an aesthetics deteriorates by providing a pocket part does not arise. The nut can be easily fitted.

  When the hanger member has a loop structure as in claim 4, the external force is prevented from acting intensively on a specific part, and a sturdy structure is obtained. For this reason, it is excellent in terms of strength.

(A) is the whole side view of a chair, (B) is a partial rear view. It is the isolation | separation perspective view which displayed all the members. (A) is a separated perspective view of a receiving member and a hanger member, (B) is a perspective view of a back cover. (A) is a perspective view of a back cover, (B) is a perspective view of a hanger member, (C) and (D) are perspective views of a receiving member. It is a separation front view of an important section. (A) the state of the cross-sectional view seen from VIA-VIA viewing direction of Figure 5 after assembled, is a cross-sectional view seen from (B) is VIB-VIB viewing direction in FIG. 5 a state after the assembly. It is a vertical side view of a non-locking state. It is a vertical side view of a locked state. It is the isolation | separation perspective view which displayed the main member. It is a separation perspective view of a locking mechanism part. (A) it is exploded perspective view of the back cover and the seat plate (the seat plate is turned upside down), (B) and (C) is a perspective view of a holder. It is a vertical side view of the place which provided the auxiliary leg.

  Next, an embodiment of the present invention will be described with reference to the drawings. In the following description, the words “front and rear”, “front”, “back”, and “left and right” are used to indicate the direction, but these words are based on the orientation of the person sitting on the rocking chair (hereinafter simply referred to as the chair). Yes. “Front view” is a state viewed from the direction facing the seated person.

(1). Outline of Chair First, an outline will be described mainly based on FIGS. The chair of the present embodiment is applied to a so-called rotating chair for office use, and the chair includes a leg device 1, a base 2, a seat 3, a backrest 4, and a back support (post) 5 as main elements. And the hanger apparatus 6 is arrange | positioned at the upper part of the back surface of the backrest 4. FIG.

  The leg device 1 has a leg support 7 made of a gas cylinder. The leg support 7 is fitted to the center of a leg body having a plurality of branch legs extending radially. For example, as shown in FIG. 10, the base 2 has a substantially box-like shape opened upward and is fixed to the upper end of the leg support 7. A base bracket (intermediate bracket) 8 is attached to the base 2 so as to be slidable back and forth.

  The seat 3 includes a seat plate (seat inner shell) 10 and a seat cushion body 11 stretched on the upper surface thereof. The seat cushion body 11 is covered with a skin material such as a cloth. A substantially front half of the seat plate 10 is attached to the upper surface of a seat receiving shell (seat outer shell) 12. The seat receiving shell 12 and the seat plate 10 are injection molded products made of a synthetic resin material such as PP (polypropylene).

  Roughly speaking, the seat plate 10 has a first portion 10a constituting the front portion and a second portion 10b constituting the rear portion, and the seat 3 is between the first portion 10a and the second portion 10b. A group of slits 13 that are long in the left-right direction is formed. The front and rear portions 10a and 10b are connected to each other at several slits 13 through connecting pieces. The portion where the group of slits 13 is provided is a kind of hinge portion, and the seat plate 10 is bent at the position of the group of slits 13. Therefore, the seat 3 has a configuration in which a portion located on the front side and a portion located on the rear side are connected.

For example, as shown in FIG. 2 , the backrest 4 mainly includes a back cover 14, a back plate 15 attached to the front surface of the back cover 14, and a back cushion body 16 attached to the front surface of the back plate 15. ing. A skin material such as a cloth is stretched on the back cushion body 16. The back cover 14 can be rephrased as a back outer shell, and the back plate 15 can be rephrased as a back inner shell. Back cover 14 and back plate 15 are injection-molded article and the material of the synthetic resin material such as PP.

  The back cover 14 has a main body portion 14a that supports the back plate 15 and a forward facing portion 14b that protrudes forward from the lower end of the main body portion 14a. Accordingly, the back cover 14 has a substantially L-shaped appearance in a side view, and the forward facing portion 14 b of the back cover 14 is connected to the second portion 10 b of the seat plate 10. The back cover 14 is connected to the back support 5 so as to be able to move down and tilt.

  When a seated person leans on the backrest 4, the backrest 4 descends while tilting backward so that the upper end is retracted and the lower end is advanced, while the seat 3 is advanced as a whole and the rear is tilted backward with respect to the front. To do. The hanger device 6 is attached to the upper back surface of the back cover 14. Next, the hanger device 6 will be described.

(2). Hanger Device As shown in FIGS. 3 and 5, for example, the hanger device 6 includes a receiving member 50 fixed to the back surface of the back cover 14 and a hanger member 51 attached to the receiving member 50. . Both are molded articles of resin, but it is also possible to adopt metal die-cast products. The hanger member 51 has an aspect in which a loop-shaped band plate is twisted, and has left and right inclined portions 51b that increase in distance from each other toward the top . It is in form. For example, as clearly shown in FIG. 5, the upper end portion 51 a of the hanger member 51 has a generally wide horizontal plane, and the left and right inclined portions 51 b are inclined so as to spread to the left and right outside in the plan view. Yes. Further, as clearly shown in FIG. 1A, the upper portion of the left and right inclined portion 51b is bent in a side view so as to bend backward.

  The lower end portion of the hanger member 51 is a base portion 51 c that is long in the left-right direction, and this portion is attached to the receiving member 50. As can be easily understood from FIG. 3, the base 51 c includes a back plate 52 that is smoothly continuous with the left and right inclined portions 51 b, left and right horizontally-enclosed upper surrounding walls 53 that protrude forward from the upper end of the substrate 52, A side wall 54 that protrudes forward from both side edges and is continuous with the upper wall 53 is provided. The left and right side surrounding walls 54 are inclined in a front view so that the distance between the left and right side surrounding walls 54 increases downward.

  From the left and right side surrounding walls 54, the dovetail plate 55, which is consistent with the fitting means described in the claims, protrudes inward. On the other hand, an engaging claw 56 protrudes downward from the lower surface of the upper surrounding wall 53 as part of the engaging means described in the claims. At the lower end of the engaging claw 56, a forward flange 56a having a mountain shape in side view is formed. Note that there is a gap between the engaging claw 56 and the back plate 52.

  A plurality of (four) auxiliary projections 57 arranged in the left-right direction protrude downward from the tip of the upper surrounding wall 53. Although the auxiliary protrusion 57 is plate-shaped, other forms such as a rod shape may be used. The auxiliary protrusion 57 can also be grasped as a part of the fitting means described in the claims.

  The receiving member 50 is sized and shaped so as to be completely covered by the base 51c of the hanger member 51. That is, it is substantially trapezoidal in a front view, and the upper surface, the left and right side surfaces, and the rear surface are covered with the base 51c of the hanger member 51, and only the lower surface is exposed downward. If the receiving member 50 is not looked into from below, a person cannot see it. Therefore, the receiving member 50 does not touch the human eye in a normal state.

  The front surface of the receiving member 50 is provided with a central protrusion 58 located at the left and right center part and hollow boss parts 59 located at both right and left sides thereof. The center protrusion 58 is in a state of being vertically divided, and an upward claw 58a is provided at the tip. On the other hand, the back cover 14 has a center hole 60 into which the center protrusion 58 is fitted and a screw insertion hole 61 into which the hollow boss portion 59 is fitted. As shown in FIG. 6A, when the center protrusion 58 is deformed against its elasticity and is fitted into the center hole 60, the receiving member 50 can be easily applied to the back cover 14 by pushing from behind. Is attached in a state that does not come off.

A pocket portion 62 that is convex upward in a plan view and is opened upward is formed in a portion of the receiving member 50 that is located directly behind the left and right hollow boss portions 59. A screw cylinder is formed on the rectangular plate in the pocket portion 62. The welded T-shaped nut 63 is inserted in a vertically long posture. Therefore, the T-shaped nut 63 is held so as not to rotate. The hollow boss portion 59 and the pocket portion 62 communicate with each other. As shown in FIG. 6B, the receiving member 50 is moved to the left and right by screwing the screw 64 into the T-shaped nut 63 through the back cover 14. The two screws 64 are firmly fixed to the back cover 14. As shown in FIGS. 4C and 4D, at the back of the pocket portion 62, an escape hole 62 'concentric with the hollow boss portion 59 is opened rearward. In addition, it is possible to use a hexagonal nut or a square nut instead of the T-shaped nut 63.

  Although not shown, it is also possible to prepare a nut on the back portion of the backrest such as the back cover 14. In this case, the T-type nut or the like is not inserted into the pocket portion 62 and the relief hole 62 ′ is inserted. It is also possible to screw a screw inserted from behind into a nut attached to a component of the backrest. That is, the screw mounting direction with respect to the receiving member 50 can be selected by providing the receiving member 50 with the pocket 62 and the relief hole 62 ′ and charging the nut to the backrest. It is also possible to form a pocket portion having an upward opening on the front surface of a back member such as the back cover 14 and screw a screw into the nut inserted into the pocket portion from behind.

  For example, as can be easily understood from FIGS. 4C and 4D, dovetail grooves 65 into which the dovetail plate 55 of the hanger member 51 is fitted from above are opened on the left and right sides of the receiving member 50 in the vertical and lateral directions. It is formed in a state to do. When the left and right dovetail plates 55 are fitted in the left and right dovetail grooves 65, the hanger member 51 is held so as not to move left and right and to move back and forth. Moreover, since the upper wall 53 of the hanger member 51 overlaps the receiving member 50 from above, the hanger member 51 is held so that it cannot be displaced downward.

  Then, an engaging groove 66 into which the engaging claw 56 of the hanger member 51 enters is formed in the left and right intermediate part of the receiving member, and the engaging groove 66 is engaged with the hook 56a of the engaging claw 56 at the position of the engaging groove 66. A surface 66a is formed. Therefore, when the hanger member 51 is pressed against the receiving member 50 from above, the dovetail plate 55 of the hanger member 51 is fitted into the dovetail groove 65 of the receiving member 50, and the engaging claw 56 is once bent backward. Thus, the hanger member 51 is lowered after the escape deformation, and at the same time, the flange portion 56a of the engagement claw 56 is engaged with the engagement surface 66a of the engagement groove 66, so that the hanger member 51 is substantially equivalent. It is held in a state where it cannot be removed unless the force of is applied. The upper end portion of the engagement groove 66 is an inclined surface 66b for the engagement claw 56 to be guided.

  As can be easily understood from FIG. 3A, an auxiliary engagement hole 67 into which the auxiliary protrusion 57 of the hanger member 51 is fitted is formed in the upper front corner portion of the receiving member 50 where the upper surface and the front surface are continuous. ing. For this reason, even if a backward-facing external force is applied to the hanger member 51, the phenomenon that the upper wall 53 of the base 51c is displaced backward does not occur, and the fixing strength is excellent.

(3). Summary of Hanger Device / Others As described above, the hanger device 6 is attached to the receiving member 50 by pressing it. For this reason, attachment work can be performed in one touch. Further, since the receiving member 50 is not visible from the outside, the aesthetic appearance is not deteriorated. When the base portion of the hanger member 51 and the receiving member 50 are horizontally long as in this embodiment, and the pair of screws 64, the dovetail plate 55, and the dovetail groove 65 are provided on the left and right sides of the engaging claw 56, the receiving member 50 can be firmly fixed to the back cover 14, and the hanger member 51 can be firmly attached to the receiving member 50.

  Further, when a backward force is applied to the hanger device 6, the external force acts as a moment on the lower end of the left and right inclined portion 51b, but the dovetail plate 55 and the dovetail groove 65 are located near the root of the inclined portion 51b. Therefore, the external force can be supported firmly, and this is excellent in terms of strength.

  A receiving member and a hanger member can employ | adopt arbitrary shapes as needed. For example, the hanger member 51 can be formed in a T shape when viewed from the front. As a means for attaching the hanger member 51, it is possible to hold the hanger member 51 so that they can be fitted to each other by being pressed from behind and cannot be removed. Further, the hanger member 51 can be fitted into the receiving member 50 from above or from behind, and both can be fixed with screws that are inserted from below. When the hanger member 51 is fitted into the receiving member 50 from behind, the receiving member 50 may be completely covered with the base portion 51c of the hanger member 51 so that the receiving member 50 cannot be seen even when viewed from below. Is possible.

  As the fitting means, a combination of a protrusion and a hole can be employed. As the engaging means, for example, a ball catch can also be adopted (thus, other members such as a spring and a sliding stopper can be used).

(4) Supplementary explanation of the relationship between the seat and the backrest Now, in a rocking chair, the rear end of the seat may come into contact with the lower end of the backrest when locking, in which case the surface of the seat and backrest looks like vinyl leather. If it is made of a skin material having a precise structure, there is a risk that rubbing noise will be generated by contact. In the present embodiment, measures against this are also disclosed. This point will be supplementarily described below.

(5) Back support / base portion Prior to the description of the main points, first, the support mechanism portion such as the back support 5 and the base 2 will be described. The back support 5 of the present embodiment is formed in an L shape in side view with a pair of left and right pipe members, and a column cover 18 is attached to the back support 5 from the back side. The left and right back supports 5 are connected by a reinforcing material 5a.

  For example, as shown in FIGS. 2 and 10, the base portion of the back column 17 is fixed to the base substrate 19 fixed to the inner surface of the base 2 by welding or the like, and is further pressed and held by the reinforcing metal fitting 20. As described above, the base 2 has a box-like appearance opened upward, and the rear end is open. The above-described base substrate 19 is fixed to the rear inner surface by welding. For example, as shown in FIGS. 7 and 8, a receiving cylinder 21 that is opened up and down is fixed to the base 2 and the base substrate 19, and the upper end of the leg column 7 is fitted to the receiving cylinder 21 from below.

  For example, as shown in FIG. 10, front and rear longitudinal long holes 23 are formed in the left and right side plates 2 a of the base 2, and resin bushes 24 are attached to the long holes 23, and the left and right bushes 24 are both longitudinally The guide shaft 25 is inserted so as to be slidable back and forth. The bush 24 is fitted into the elongated hole 23 from the outside, and has a flange 24 a that contacts the outer surface of the base 3. The guide shaft 25 is inserted through a downward bearing piece 26 provided at the rear portion of the seat receiving bracket 8.

  Although the details are omitted, the front portion of the seat bracket 8 is fitted into the pocket portion provided on the lower surface of the seat plate 10 from behind, and in this state, the seat plate 10 has two left and right portions at the rear portion of the seat bracket 8. It is fastened with screws.

  For example, as shown in FIG. 10, a coil spring 28 for a rocking spring that expands and contracts in the front-rear direction is disposed inside the base 2 as an example of an elastic support means for locking. On the other hand, a downward rear spring receiving support piece 29 is formed at the rear end portion of the seat receiving bracket 8. The coil spring 28 is supported from behind by a rear spring receiver support piece 29 via a rear spring receiver 30. The front end of the coil spring 28 is supported by the front wall of the base 2 via the front spring receiver 31. Accordingly, the seat bracket 8 moves forward against the coil spring 28.

  For example, as shown in FIG. 10, left and right horizontal pieces 2b are integrally formed at the upper ends of the left and right side plates 2a of the base 2, and a resin slide auxiliary body 33 is attached to the horizontal piece 2b. Yes. The slide auxiliary body 33 has a substantially groove-shaped cross section so as to hold the horizontal piece 2b. In addition, a groove-shaped holding portion 34 that wraps the slide auxiliary body 33 from the outside is formed on the left and right side portions of the seat bracket 8. When the holding portion 34 slides with respect to the slide auxiliary body 33, the seat bracket 8 slides back and forth smoothly with respect to the base 2.

  Although details are omitted, the first portion 10a constituting the front side of the seat plate 10 is connected to the seat receiving shell 12 by catch means composed of engaging claws, and constitutes the rear portion of the seat plate 10. The second portion 10b is also attached to the forward facing portion of the back cover 14 by catching means by a combination of engaging claws and engaging holes.

(6). Structure of the backrest As can be understood from FIG. 9, for example, a long groove 35 opened downward is formed in the left and right middle portion of the back cover 14, and therefore the front portion 14b of the back cover 14 is divided into right and left. Has been. A bearing portion 36 is formed at the front end of the left and right forward portion 14 b of the back cover 14, and the left and right bearing portion 36 and the rear ends of the left and right side plates 2 a of the base 2 are connected by a guide shaft 25.

  For example, as can be understood from FIG. 2, the long groove 35 extends to a vertical halfway height position of the main body 14 a in the back cover 14. However, a plurality of connecting portions 37 straddling the long groove 35 are integrally formed at a midway portion in the front-rear direction of the forward facing portion 14b and a midway portion in the vertical direction of the main body portion 14a.

  For example, as shown in FIG. 9, a reinforcing bracket 38 is fixed to the upper end portion of the back column 17, and a guide pin 39 is fixed to the reinforcing bracket 38. The left and right ends of the guide pin 39 are exposed to the left and right outer sides of the reinforcing bracket 38.

On the other hand, the upper part of the right and left inner side surfaces of the long groove 35 in the back cover 14, the upper and lower longitudinal guide grooves 40 are formed in the mutually facing state. The left and right guide grooves 40 are fitted is a resin guide member 41 of the groove-shaped, the groove of the guide member 41, the end portion of the guide pin 39 is fitted freely slide up and down. The guide member 41 is curved in a forward concave shape with a gentle curvature in a side view.

(7). Summary of Movement and Supplementary Explanation In the locking state, the backrest 4 tilts backward while the backrest 5 sinks with respect to the back support 5 having a constant posture. At the same time, the seat 3 moves forward as a whole, while the second portion 3b tilts backward with respect to the first portion 3a. When the body is raised from the locked state, the backrest 4 and the seat 3 are returned to the original state by the coil spring 28.

  When the rear portion of the seat 3 sinks downward without changing the curvature during locking, the rear end of the seat 3 and the lower end of the backrest 4 do not come into contact with each other, but the second portion 10b of the seat plate 10 serves as the back cover 14. The left and right front portions 14b are not so wide that the left and right central portions of the rear end of the seat 3 do not contact the backrest 4, but the left and right ends of the rear end of the seat 3 are not connected. There is a possibility that a portion close to the part does not move downward sufficiently and contacts the lower end of the backrest 4. As a result, a rubbing sound may be generated when the skin material is leather.

  This point may be set so that the rear end of the seat does not come into contact with the lower end of the backrest 4 at any part during locking. Therefore, in the chair according to the present embodiment, as shown in FIGS. 11 and 12, an auxiliary leg that is provided with a rectangular auxiliary hole 45 at the rear end of the second portion 10 b of the seat plate 10 and protrudes backward in the auxiliary hole 45. 46, and the front end (rear end) of the auxiliary foot 46 is brought into contact with the horizontally long rib 47 provided on the back cover 14 from below.

  The auxiliary foot 46 has a T-shaped dovetail portion 46a. The auxiliary foot 46 is attached to the second portion 10b of the seat plate 10 by fitting the dovetail portion 46a into the auxiliary hole 45 from the front. ing. At the time of locking, the auxiliary foot 46 is pushed downward by the laterally long rib 47 of the back cover 14, whereby the rear end of the seat 3 is held in a state where there is a gap S between the lower end of the backrest 4. Accordingly, no rubbing sound is generated even if the skin material is leather. An inclined guide surface 46 b is formed at the distal end of the auxiliary foot 46 in order to facilitate entry of the laterally long rib 47 into the lower surface portion.

  The present invention is embodied in a chair and exhibits utility. Therefore, it can be used industrially.

4 Backrest 6 Hanger device 50 Receiving member 51 Hanger member
51b Inclined portion 51c Hanger member base portion 53, 54 Enclosure wall 55 Dovetail plate 56 as an example of fitting means 56 Engaging claw as an example of engaging means 62 Pocket portion 63 T-type nut 64 Screw (bolt, screw)
65 Dovetail groove as an example of fitting means

Claims (4)

A receiving member fixed to the back of the backrest, has a hanger member attached to the receiving member, the receiving member is either in its entirety is covered with the base of the hanger member, or, a lower surface except the end with is covered with the base of the hanger member,
Chair hanger equipment. When the hanger member is moved downward, the receiving member and the base of the hanger member are fitted to each other, and the fitting means that holds both the front and rear and the left and right so that they cannot be separated from each other. engaging means for holding so as not to escape upward hanger member is provided with the receiving member is part content excluding the lower surface is covered with the base of the hanger member,
A hanger device for a chair according to claim 1. The receiving member is configured to be fixed to the backrest with a screw screwed from the front side of the chair, and is formed in a state in which a pocket portion holding a nut into which the screw is screwed is opened upward in the receiving member. The upper surface of the receiving member is covered from above with the base of the hanger member ,
A chair hanger device according to claim 1 or 2. The hanger member has an inverted trapezoidal loop structure as a whole as it rises diagonally upward from the left and right ends of the left and right laterally elongated base part while widening the interval between each other .
The chair hanger apparatus in any one of Claims 1-3.

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