CN204541418U - A kind of stool - Google Patents

Abstract

The utility model relates to a stool, which has a base member and a leg member supporting the base member, and also includes a backrest mechanism, the backrest mechanism has: a one-way hinge member, which is symmetrically arranged on the stool, and has a one-way support and reverse callback reset function; and a back support member, the back support member is connected between two symmetrical one-way hinge members, and freely rotates above the stool along with the one-way hinge members. The utility model is the first to install one-way hinge components on both sides of the traditional stool, and install back support components between the one-way hinge components, so that the back support components can be rotated and adjusted up and down around the stool. When the back support member is rotated to the upper side of the stool, the one-way support function of the one-way hinge can be used as the back of the chair to support the back of the human body and achieve a comfortable and labor-saving sitting posture.

Description

a stool

technical field

The invention relates to a stool, in particular to a stool with a rotatable angle-adjustable backrest mechanism.

Background technique

Stools are conventional furniture for people to sit on. They are simple in structure, light in weight, and suitable for movement. They are widely used in families and in various business places.

However, in terms of structure and function, the essential difference between a stool and a chair is that the chair has a back for people to lean on, which is more comfortable and labor-saving to use. However, no matter how the existing traditional stool structure changes, it does not have the structure of a chair back. , when people sit on the stool, they can't support the back of the human body, so they can't bring the comfortable and labor-saving sitting feeling like a chair.

Contents of the invention

The purpose of the present invention is to provide a stool equipped with a rotating and adjustable backrest mechanism with simple structure and good supporting strength, so that it not only has the advantages of light weight and easy movement of the stool, but also has the comfort and labor-saving experience of a chair.

The object of the present invention is achieved through the following technical solutions. A stool has a base member and a leg member supporting the base member. It is characterized in that it also includes a backrest mechanism. The backrest mechanism has: a one-way hinge member, The directional hinge component is symmetrically arranged on the stool, which has the functions of one-way support and reverse callback reset; and the back support component, which is connected between the two symmetrical one-way hinge components, and along with the one-way hinge component Swivels freely above the stool.

The one-way hinge component includes a hinge plate, a handle and a connecting piece, the handle is connected to the back support component, and the connecting piece fixes the one-way hinge component on the stool.

The stool of the present invention is the first to install one-way hinge components on both sides of the traditional stool, and back support components are installed between the one-way hinge components, so that the back support components can be rotated and adjusted up and down around the stool. When the back support member rotates to the upper side of the stool, the one-way support function of the one-way hinge can be used as the back of the chair to support the back of the human body to achieve a comfortable and labor-saving sitting posture. When the back support is not needed, the back support member can be adjusted to the lower part of the stool by utilizing the resetting function of the one-way hinge member.

Description of drawings

Fig. 1 is the structural representation of chair.

Figure 2 is an exploded view of the various parts of the chair.

Fig. 3 is a connection structure diagram of the hinge plate through the handle, the connector, the back support member and the base member.

Fig. 4 is an exploded view of the one-way hinge member.

Fig. 5 is a structural schematic diagram of the handle of the one-way hinge member at the initial position.

Fig. 6 is a structural schematic diagram of the handle of the one-way hinge member turned to the maximum angle position.

Fig. 7 is a structural schematic diagram of the handle.

Fig. 8 is a structural schematic diagram of the support plate.

Fig. 9 is a schematic structural diagram of a gear.

Fig. 10 is a sectional view along AA of Fig. 9 .

Detailed ways

The present invention will be described in detail below in conjunction with accompanying drawing:

As shown in Figure 1, a kind of stool has base member 10, the leg member 20 of supporting base member, and backrest mechanism, and this backrest mechanism has: one-way hinge member 30, and this one-way hinge member is symmetrically arranged on stool base member 10, which has the functions of one-way support and reverse callback reset; and the back support member 40, which is connected between two symmetrical one-way hinge members, and freely rotates above the stool along with the one-way hinge members.

As shown in Figures 2 and 3, the overall structure of the one-way hinge member 30 includes a hinge plate 31, a handle 32 and a connector 33, the handle is connected to the back support member 40, and the connector fixes the one-way hinge member on the stool.

The detailed structure of each component is introduced below:

The component diagrams and assembly diagrams of the one-way hinge components shown in Figure 4-10.

Connector 33 comprises rectangular square plate 331, and the two ends of this square plate respectively have four perforations that are screwed with stool, and the middle welds and fixes round pipe 332, and the hexagonal screw rod 333 of welding band internal thread hole is welded in the round pipe.

The hinge disc 31 includes a support plate 311, small teeth 312, and a gear 313. The gear 313 is fixed to the hexagonal screw of the connector, and two support plates 311 with symmetrical intervals are fixed to form a bracket with a hollow groove, and the support plate 311 supports are rotated and fitted on the On the gear 313, the handle is fixed on the other end of the support plate bracket, and the small teeth and gears are arranged in the hollow groove of the bracket and engage correspondingly.

The two ends of the hollow groove in the support plate form the first connecting part 311A and the second connecting part 311B. There are four screw holes connected with screws on the first connecting part to connect the fixed handle 32. The second connecting part forms a round hole 311C , the center of the gear 313 has a through hole 313B, and the two ends form a raised hole wall 313A. And the through hole 313B is an inner hexagonal hole corresponding to the hexagonal screw, the hexagonal screw is fixed with the hexagonal hole of the gear, and the gear is fixed on the rectangular square plate 331 by the screw and the internal thread hole of the hexagonal screw 333. There is also a gap between the screw and the hexagonal screw. washer. The outer wall of the hole wall 313A of the gear 313 is circular, and is rotatably matched with the two circular holes 311C of the symmetrical support plate.

There are two guide holes 311D in the middle of the two support plates. The guide holes are assembled with small teeth 312 through pin shafts, so that the ratchets of the small teeth and the teeth of the gear 313 are correspondingly engaged. Snap fit in one direction, slip fit in reverse direction. The two ends of the tooth portion of the gear form stoppers 313C, one end of the small tooth forms a limiting end 312A that cooperates with the stopper to prevent the rotation of the small tooth, and the other end forms an inclined sliding end 312B.

The handle 32 is located inside the hollow groove to form a groove 321 for accommodating the small teeth, and an elastic piece 314 is arranged in the groove, and the elastic piece elastically presses the small teeth to fit the gear.

As shown in FIG. 5 , when the small tooth rotates to the initial limit position, the stopper 313C cooperates with the limit end 312A to prevent the small tooth and the support plate from rotating. As shown in Figure 6, when the small tooth rotates to the maximum angle limit position, the stopper 313C slides and fits with the sliding end 312B of the small tooth 312, and pushes the small tooth out of the gear, and at the same time, the pin shaft slides synchronously in the positioning hole until it is pushed out Small teeth make it reset.

As shown in Figures 2 and 3, there is a housing 315 outside the hinge plate. The housing is equipped with a bracket formed by a fixed support plate. One end of the housing forms an opening through which the round tube passes, and the hexagonal screw of the screw and the round tube passes through the bracket. fixed; its other end allows the handle to protrude so that the handle is mounted on the back support member.

As shown in Figures 1, 2, and 3, the back support is an arc-shaped rod 40, which is formed by plugging three sections of arc-shaped rods 41. The two ends of the arc-shaped rod 41 are symmetrical in shape, and the ends are divided into The two halves are respectively provided with yin and yang symmetrical plug-in blocks 411 and slots 412. The plug-in block 411 and slot 412 at one end of the arc-shaped rod are matched with the slot and plug-in block of the other adjacent arc-shaped rod. Fit fixed. In order to make it difficult for the arc rods to disengage, a symmetrical notch 413 is provided between the connecting blocks of the paired arc-shaped rods, and the symmetrical notch forms a rectangular hole, and the positioning block 414 is inserted into the rectangular hole. The two ends of the arc rod form holes for plugging in the handle, and the handle and the arc rod are fixed by screw connection. Elastic pad 42 is also sheathed on the arc bar, and elastic pad is made of sponge layer and leather wrapping layer.

Both the base member 10 and the leg member 20 supporting the base member are composed of a circular ring, and corresponding sockets are provided between the two circular rings, and support bars 21 are inserted between the sockets. The circular circles are all formed by plugging four sections of arc-shaped rods, and its structure is the same as that of the back support member arc-shaped rod 41, and the description of the structure is omitted here.

There is a recessed platform 11 along the inner circle of the base member 10, and the inner side is also fixed with a support rod 12, and a circular elastic cushion 13 is installed on the recessed platform and the support rod, and is fastened by screws.

Claims (1)

1. a stool, has the leg member of substructure member and base for supporting component, it is characterized in that, also comprise backrest, and this backrest has:

Unidirectional hinge member, this unidirectional hinge member is symmetricly set on stool, and it has unidirectional support and oppositely adjusts back reset function;

And back support component, this back support component is connected between two unidirectional hinge members of symmetry, and rotates freely above stool along with unidirectional hinge member.

2. stool according to claim 1, is characterized in that, described unidirectional hinge member comprises hinge dish, handle and connector, and described handle is connected with back support component, and unidirectional hinge member is fixed on stool by described connector.

3. stool according to claim 2, it is characterized in that, described hinge dish comprises gripper shoe, little tooth, gear, the gripper shoe of two pieces of symmetrical spacing distances fixes the support forming band groove, little tooth, gear are located in groove, and the groove two ends in gripper shoe form the first connecting portion and the second connecting portion, first connecting portion is connected and fixed handle, second connecting portion forms circular hole, gear centre has through hole, through hole two ends form protruding hole wall, and hole wall outer ring is the circle be socketed with circular hole, fix in through hole hole with connector loose joint; Have bullport in the middle part of described two pieces of gripper shoes, this bullport assembles little tooth by bearing pin, and makes that the ratchet of little tooth is corresponding with the tooth of gear to be engaged; The two ends, tooth portion of gear form block, little tooth one end is formed and coordinates the positive stop end stoping little tooth to rotate with block, the other end forms the sliding end of inclination, when little tooth spiral forwards extreme position to, block ejects little tooth, simultaneously bearing pin along sliding end and synchronously slides in locating hole and make it reset until eject little tooth; It is fluted that described handle is positioned at groove inside, is provided with shell fragment in groove, and little tooth is suppressed laminating gear by this shell fragment.

4. stool according to claim 3, it is characterized in that, described connector is rectangle side's plate, the party's plate two ends form the perforate be connected with stool, middle fixing pipe, the hexagonal screw rod of the inner fixed band internal thread hole of pipe, gear hole inwall is the inner hexagonal hole with hexagonal screw rod corresponding matching, hexagonal screw rod coordinates fixing with gear hexagon ring, gear is fixed on connector pipe by screw.

5. stool according to claim 4, is characterized in that, described hinge dish also has housing outward, and this enclosure interior is mounted with the support that gripper shoe is formed, and its one end forms the perforate of passing with pipe, and is fixed by the hexagonal screw rod of screw and pipe; Its other end makes handle stretch out, and makes handle install back support component.

6. stool according to claim 3, is characterized in that, described gear hole outer wall is equipped with the torsion spring being suitable for gripper shoe and resetting.

7. stool according to claim 2, is characterized in that, described back support is a bow, and bow two ends form the hole slot of grafting handle.

8. stool according to claim 7, is characterized in that, described bow is also set with cushion.

9. stool according to claim 1, is characterized in that, the leg member of substructure member and base for supporting component is all made up of a ring, arranges corresponding jack between this ring, grafting support bar between jack.

10. stool according to claim 9, is characterized in that, fixed support bar between the upper circular circle of substructure member, and elastic cushion is installed on support bar and the interior edge of ring.

11. according to the arbitrary described stool of claim 7-10, it is characterized in that, bow and ring are all made up of some sections of arc-shaped rod grafting, arc-shaped rod two halves are provided with symmetrical negative and positive grafting block and slot, and the slot of the grafting block of described arc-shaped rod one end, slot and another arc-shaped rod, grafting block coordinate to be fixed.

12. stooles according to claim 11, is characterized in that, are also provided with symmetric windows between the grafting block of the described arc-shaped rod coordinated between two, and symmetric windows forms rectangular opening, this rectangular opening grafting locating piece.