CN105380434A - Folding mechanism and chair applying same - Google Patents
Folding mechanism and chair applying same Download PDFInfo
- Publication number
- CN105380434A CN105380434A CN201510959629.3A CN201510959629A CN105380434A CN 105380434 A CN105380434 A CN 105380434A CN 201510959629 A CN201510959629 A CN 201510959629A CN 105380434 A CN105380434 A CN 105380434A
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- China
- Prior art keywords
- axle sleeve
- chair
- sleeve
- set bolt
- tail end
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C4/00—Foldable, collapsible or dismountable chairs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
Landscapes
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
A folding mechanism comprises a main body and an secondary body which are associated with the folding mechanism, and further comprises a center shaft sleeve, a tail-end shaft sleeve and a fixing bolt; the fixing bolt sequentially penetrates through the center shaft sleeve and the tail-end shaft sleeve; the distances from the periphery of a sleeve body of the center shaft sleeve to the axis are not equal, and the axis is provided with a shaft hole penetrating through the sleeve body; the axis of a sleeve body of the tail-end shaft sleeve is provided with an inner thread screw hole for allowing the fixing bolt to be fixed; the center shaft sleeve is embedded into the main body, the fixing bolt is arranged on one side of the secondary body, and the tail-end shaft sleeve is embedded into the other side of the secondary body. According to the folding mechanism, due to the fact that a force bearing point is transmitted to the fixing bolt through the center shaft sleeve and then dispersed to the secondary body through the fixing bolt, stress of the mechanism is reduced, the strength is high, the structure is more stable, and the service life is longer. The invention further discloses a chair applying the folding mechanism.
Description
Technical field
The present invention relates to a kind of for fold mechanism, and relate to the chair using this fold mechanism, belong to IPC and to classify A47 technical field.
Background technology
Along with the growth of population, available space (comprising house and trip) is more and more less per capita, and living cost is also constantly being added fuel to the flames, portable and folding daily necessities is being made to become more and more essential, as folding table, chair, stool, sofa, bed etc.
The fold mechanism of these fold furnitures and product, along with the activity of the wisdom of humanity, become more and more abundanter.But market economy leading under, it is comparatively serious that economic behaviour makes product price break up, on workinprocess cost is held, most consumer is ready to accept product at a low price, producer also mostly adopts low price strategy in competition, the material of low cost that what under this overall situation, generally speaking product at a low price adopted is, the cost of the structure of low cost and other relative moderate, therefore, be that material makes and with simple fold mechanism product often captures the dominant contribution in market with plastics, this series products becomes the body of product primarily of plastic production, fold mechanism is made into again with plastic material, or adopt metal material with simpler, fold mechanism is made by more direct bindiny mechanism, as bolt is fixed with nut at opposite side through plastics projection, thus the multiple part of the body of plastics is folded, folded products stability under these fold mechanisms differs and reserves, for this series products, out multiple modified node method again on the market.
As China Patent Publication No.: CN203506096U discloses a kind of joint-stool of plastic production, fold mechanism and chair unite two into one by this chair, an in fact inherently large fold mechanism, see Fig. 1, comprise chair surface (A1) and chair back (A2), chair back is connected with front leg strut (A3), the middle part of the rear portion of chair surface and front leg strut (A3) is slidably connected, the upper end thereof of front portion and rear support leg (A4), front leg strut and rear support leg intersect, both middle part is hinged setting, described rear support leg is provided with the strengthening mechanism keeping seat not hypsokinesis.Rear support leg (A4) is upper near being provided with support protrusion (A5) with the hinged place of chair surface (A1), and the bottom of described chair surface is pressed in support protrusion.Chair bottom be provided with the cushion block (A6) of corresponding support protrusion, support protrusion is connected with the reinforcing strip (A7) be located on rear support leg.Chair fold mechanism makes seat shakiness technical problem when folding and use is solved by being wholely set, but in fact chair surface is stressed excessive, the power that known support protrusion (A5), cushion block (A6) and reinforcing strip (A7) are finally subject to still passes to front leg strut (A3) and rear support leg (A4) intersection, chair is plastic production, final stress point is identical with pin joint, pin joint is just simply hinged, and reality is impaired just also exists possibility, causes its structural stability just poor.
And for example China Patent Publication No.: a kind of plastic folding table disclosed in CN20294639U, consult Fig. 2, comprise desktop and table pin, table pin comprises a hinged left side, middle part, right support pin (A11, A12), on a described left side, right support pin (A11, A12) upper end is a hinged left side respectively, right support connecting rod (A21, A22), desktop is also divided into a left side, right desktop (A31, A32), left, right desktop (A31, A32) limit is separately fixed at a left side, right support connecting rod (A21, A22) on, from reserving one section of support portion (A4) between support link and hinged place to the desktop edge of feet in support link.Desktop, support link and feet are made by plastic material.This fold mechanism is also integrated with desk substantially, the power that left and right desktop (A31, A32) is subject to is delivered to left and right feet (A11, A12) intersection through left and right support link (A21, A22), therefore, this intersection pin joint and stress point are also same point, pin joint is also just simply hinged, desktop is stressed reach certain value time, impaired also exist difference may, its structural stability is poor.
Summary of the invention
The present invention take mainly plastics as the technical problem of the daily necessities fold mechanism poor stability such as folding seat, folding table of material to solve existing.
The technical scheme that the present invention will deal with problems is as follows:
Fold mechanism, comprises the main body and accessory body that are associated with this fold mechanism, it is characterized in that: also comprise a central axle sleeve, tail end axle sleeve and set bolt, and set bolt is successively through central axle sleeve and tail end axle sleeve;
Central axle sleeve, body periphery is to axle center Unequal distance and axle center is provided with the axis hole running through body;
Tail end axle sleeve, body axle center is provided with for the fixing internal thread screw of set bolt;
At central axle sleeve or/and the outer sleeve body of tail end axle sleeve is also provided with the multiple grooves distributed vertically, the spacing between this groove can be zero;
Central axle sleeve is embedded in main body, and set bolt is located at accessory body side, tail end axle sleeve is embedded opposite side into accessory body;
Central axle sleeve, tail end axle sleeve and set bolt are metal material.。
Between central axle sleeve and set bolt, be also provided with a front-end shaft sleeve, front-end shaft sleeve is embedded on accessory body.
Described groove can replace by least one projection.
The body periphery of described central axle sleeve can be equidistant to axle center.
Use the chair of this fold mechanism, comprise the chair back, seat and forward and backward chair leg, is characterized in that: chair back side extends to form front chair leg, and the chair back leans against has a space near side;
The central axle sleeve A that set bolt A is embedded through the back leg end being positioned at space, is fixed on the tail end axle sleeve A in the opposite side chair back side extension of space;
The middle part of back leg is provided with a grade bar, and lower surface, seat rear at least extends the stiff end that is embedded with central axle sleeve B, and set bolt B, through extending part, the central axle sleeve B of shelves bar, is fixed on the tail end axle sleeve B being embedded and filing in bar extension projection;
The middle part of front chair leg is provided with and makes seat keep the stable impetus puted forth effort.
The chair back leans against part and is embedded with front-end shaft sleeve.
Described impetus be one side extend and on hook, to being provided with a groove bottom hook seat.
Beneficial effect of the present invention is as follows:
Set bolt, central axle sleeve, tail end axle sleeve is metal material, the present invention passes accessory body successively by set bolt, be embedded at the central axle sleeve of main body upper periphery apart from axle center Unequal distance, be embedded the tail end axle sleeve into other end accessory body, main body and accessory body is made to produce hinge-effect, formed hinged, central axle sleeve body and the groove of all back gauge axle center Unequal distance can more firmly make central axle sleeve become to be integrated with main body, thus make stress point be passed to set bolt by central axle sleeve, set bolt is dispersed on accessory body, make stressed minimizing itself, intensity is high, structure is more stable, service life is also long.
The chair that the present invention is applied to is because fold mechanism of the present invention, suffered power can evenly be transmitted, load ability is strong, again because gap between fold mechanism three is little, good stability, has used for a long time and also there will not be displacement, can strengthen the quality of low cost plastic product, thus improve the service life of such plastic living articles for use, the market competitiveness of enterprise.
Accompanying drawing illustrates:
Fig. 1 is prior art one shown in background technology;
Fig. 2 is prior art two shown in background technology;
Fig. 3 is the structural representation of fold mechanism of the present invention;
Fig. 4 is the STRUCTURE DECOMPOSITION figure of Fig. 3;
Fig. 5 is the structural representation of another embodiment of fold mechanism of the present invention;
Fig. 6 is the STRUCTURE DECOMPOSITION figure of Fig. 5;
Fig. 7 is the structural representation of chair of the present invention;
Fig. 8 is the partial enlarged drawing of Fig. 7;
Fig. 9 is the structural representation of another angle of Fig. 7;
Detailed description of the invention:
Below in conjunction with accompanying drawing, elaboration detailed is further done to the present invention;
Consult Fig. 3 to Fig. 6, embodiment one, fold mechanism, comprise the main body (scheming not mark) and accessory body (scheming not mark) that are associated with this fold mechanism, also comprise a central axle sleeve (1), tail end axle sleeve (2) and set bolt (3), set bolt (3) is successively through central axle sleeve (1) and tail end axle sleeve (2);
Central axle sleeve (1), body periphery is to axle center Unequal distance and axle center is provided with the axis hole (11) running through body; Axis hole (11) inner wall smooth, in some cases, described axis hole (11) inwall is also provided with oil groove.
Body periphery, to axle center Unequal distance, can make cover shape show as quadrangle, and three separate shape, and the polygon of picture five-pointed star formula.
Tail end axle sleeve (2), body axle center is provided with for the fixing internal thread screw (21) of set bolt; This screw can be through hole can be also blind hole, is preferably blind hole.
At central axle sleeve (1) or/and the outer sleeve body of tail end axle sleeve (2) is also provided with the multiple grooves (5) distributed vertically, the spacing between this groove (5) can be zero; When spacing is zero, groove (5) can show as and join end to end, and namely forms spiral helicine groove, when spacing is non-vanishing, equidistant and Unequal distance can be set to again, as with the pitch spacings such as 2cm one, entirety just depending on central axle sleeve (1) cover body length, Unequal distance, can be equidistant after one with 2cm equidistant one again of 1cm, with 3cm equidistant one again, above numerical value just exemplifies, and is not to limit.
Certainly, groove (5) can be put and establish, and also can ring-type arrange.Point is established and can also be arranged at random, and described point is set and is the independent depression of a radius as certain geometrical shape, and described ring-type is set to be arranged on the groove that jacket surface is a section longer.
Central axle sleeve (1) is embedded in main body (figure do not mark), and set bolt (3) is located at accessory body side, tail end axle sleeve (2) is embedded opposite side into accessory body (figure does not mark);
Central axle sleeve (1), tail end axle sleeve (2) and set bolt (3) are metal material.
In the present embodiment, main body and accessory body are a relative address, and do not lie in certain position of certain plastic product of limitation, just be used as the variability call at the plastic product position that central axle sleeve (1) is fixed respectively with set bolt (3) and tail end axle sleeve (2), two or more parts of plastic product are produced with this hinged and then collapsible, form fold mechanism.
Embodiment two, based on embodiment one, is also provided with a front-end shaft sleeve (4) between central axle sleeve (1) and set bolt (3), and front-end shaft sleeve (4) is embedded on accessory body (figure does not mark).
In the present embodiment, front-end shaft sleeve (4) is provided with near the side of central axle sleeve (1), the step (41) recessed to the inside matched with set bolt (3) spiral shell head.
Embodiment three, based on embodiment one, described groove (5) can replace by least one projection.In the present embodiment, groove (5) can mix with projection and arranges, and also can entirely be replaced by projection.Further, described projection can be arranged in the outer surface of body in the shape of a spiral, also can arrangement perpendicular to axial direction at certain intervals, can branch, also can ring-type.
Embodiment four, based on embodiment one, the body periphery of described central axle sleeve can be equidistant to axle center.
In embodiment one to three, described tail end axle sleeve (2) is also provided with groove (5), and described front-end shaft sleeve (4) is also provided with groove (5), and tail end axle sleeve (2), front-end shaft sleeve (4) also have and have identical profile with central axle sleeve (1) body.
Consult Fig. 7 to Fig. 9, use the chair of this fold mechanism, comprise the chair back (1A), seat (1B) and forward and backward chair leg (1C, 1D), the chair back (1A) side extends to form front chair leg (1C), and the chair back (1A) leans against (1E) and has a space (1F) near side;
Set bolt A(1G) the central axle sleeve A(1H that is embedded through back leg (1D) end being positioned at space (1F)), be fixed on space (1F) the opposite side chair back (1A) side extend in tail end axle sleeve A(1I);
The middle part of back leg (1D) is provided with a grade bar (1J), seat (1B) lower surface, rear at least extends one and is embedded with central axle sleeve B(1K) stiff end (1L), set bolt B(1M) through the extending part (1N) of shelves bar (1J), central axle sleeve B(figure indicating), be fixed on and be embedded the bar that files (1J) and extend tail end axle sleeve B(figure indicating in protruding (1O));
The middle part of front chair leg (1C) is provided with and makes seat (1B) keep the stable impetus (1Q) puted forth effort.
The chair back (1A) leans against part and is embedded with front-end shaft sleeve (figure indicating).
Described impetus (1Q) be one side extend and on hook, namely side extends above level, to being provided with a groove bottom hook seat.When open mode, hook is inserted in groove, can ensure the prone stability of chair.A reinforcement is also provided with outside the cell wall of groove.It can be made not easily to be subjected to displacement in the lateral direction by reinforcement.
Folding seat of the present invention can manufacture according to the following steps:
The first step, first assembles central axle sleeve A, forms one successively by set bolt A through central axle sleeve A, tail end axle sleeve A;
Second step, is placed in the mould of the chair back, the injection moulding simultaneously of rear chair pin, injection mo(u)lding by the set bolt A assembled, central axle sleeve A and tail end axle sleeve A;
3rd step, is placed on central axle sleeve B in seat mould, with seat integrated injection molding;
4th step, seat after shaping and the chair back are placed and are matched, and set bolt B passes the extending part on rear chair pin shelves bar successively, through set bolt B, the extension projection of shelves bar and the tail end axle sleeve B of its inner integrated injection molding, namely complete a kind of production of joint-stool.
Above-described chair, because its pin joint and the strong point are not entirely for same position, and use fold mechanism adopts is that the set bolt of metal is through central axle sleeve and tail end axle sleeve, make uniform force transmission, load ability is strong, again because gap between three is little, good stability, use for a long time and also there will not be displacement, and the part of fold mechanism and the product that will use are passed through injection mo(u)lding, the quality of low cost product can be strengthened, thus improve the service life of such plastic living articles for use, make the market competitiveness of enterprise's improving product that consumer can be made again to obtain more inexpensive good product.
In addition, as the distortion of above-described embodiment, foldable structure of the present invention can be applicable to other furniture such as desk.
Central axle sleeve described in it to connect or the main body of integrated injection molding or accessory body are the parts of other furniture such as desk, accessory body is by front-end shaft sleeve or the tail end axle sleeve that directly then to terminate in through the central axle sleeve in main body through part ennation with set bolt in accessory body other end ennation.
Claims (7)
1. fold mechanism, comprises the main body and accessory body that are associated with this fold mechanism, it is characterized in that: also comprise a central axle sleeve, tail end axle sleeve and set bolt, and set bolt is successively through central axle sleeve and tail end axle sleeve;
Central axle sleeve, body periphery is to axle center Unequal distance and axle center is provided with the axis hole running through body;
Tail end axle sleeve, body axle center is provided with for the fixing internal thread screw of set bolt;
At central axle sleeve or/and the outer sleeve body of tail end axle sleeve is also provided with the multiple grooves distributed vertically, the spacing between this groove can be zero;
Central axle sleeve is embedded in main body, and set bolt is located at accessory body side, tail end axle sleeve is embedded opposite side into accessory body;
Central axle sleeve, tail end axle sleeve and set bolt are metal material.
2. fold mechanism according to claim 1, is characterized in that: between central axle sleeve and set bolt, be also provided with a front-end shaft sleeve, front-end shaft sleeve is embedded on accessory body.
3. fold mechanism according to claim 1, is characterized in that: described groove can replace by least one projection.
4. fold mechanism according to claim 1, is characterized in that: the body periphery of described central axle sleeve can be equidistant to axle center.
5. use the chair as claim 1 fold mechanism, comprise the chair back, seat and forward and backward chair leg, is characterized in that: chair back side extends to form front chair leg, and the chair back leans against has a space near side;
The central axle sleeve A that set bolt A is embedded through the back leg end being positioned at space, is fixed on the tail end axle sleeve A in the opposite side chair back side extension of space;
The middle part of back leg is provided with a grade bar, and lower surface, seat rear at least extends the stiff end that is embedded with central axle sleeve B, and set bolt B, through extending part, the central axle sleeve B of shelves bar, is fixed on the tail end axle sleeve B being embedded and filing in bar extension projection;
The middle part of front chair leg is provided with and makes seat keep the stable impetus puted forth effort.
6. chair according to claim 5, is characterized in that: the chair back leans against part and is embedded with front-end shaft sleeve.
7. chair according to claim 5, is characterized in that: described impetus be one side extend and on hook, to being provided with a groove bottom hook seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510959629.3A CN105380434B (en) | 2015-12-21 | 2015-12-21 | Fold mechanism and the chair using the fold mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510959629.3A CN105380434B (en) | 2015-12-21 | 2015-12-21 | Fold mechanism and the chair using the fold mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105380434A true CN105380434A (en) | 2016-03-09 |
| CN105380434B CN105380434B (en) | 2018-01-23 |
Family
ID=55413681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510959629.3A Active CN105380434B (en) | 2015-12-21 | 2015-12-21 | Fold mechanism and the chair using the fold mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105380434B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2531064A1 (en) * | 1974-07-15 | 1976-01-29 | Hille Int Ltd | FOLDING LEGS FOR FURNITURE |
| US5501541A (en) * | 1993-08-09 | 1996-03-26 | Gomes; Daniel | Flexible coupling device |
| CN200945325Y (en) * | 2006-09-17 | 2007-09-12 | 青岛三硕钢塑制品有限公司 | Foldable jumping bed |
| CN203016334U (en) * | 2013-01-07 | 2013-06-26 | 浙江天鸿竹木有限公司 | Folding chair with backrest |
| CN205385998U (en) * | 2015-12-21 | 2016-07-20 | 台州市黄岩百业模具厂 | Folding mechanism and use this folding mechanism's chair |
-
2015
- 2015-12-21 CN CN201510959629.3A patent/CN105380434B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2531064A1 (en) * | 1974-07-15 | 1976-01-29 | Hille Int Ltd | FOLDING LEGS FOR FURNITURE |
| US5501541A (en) * | 1993-08-09 | 1996-03-26 | Gomes; Daniel | Flexible coupling device |
| CN200945325Y (en) * | 2006-09-17 | 2007-09-12 | 青岛三硕钢塑制品有限公司 | Foldable jumping bed |
| CN203016334U (en) * | 2013-01-07 | 2013-06-26 | 浙江天鸿竹木有限公司 | Folding chair with backrest |
| CN205385998U (en) * | 2015-12-21 | 2016-07-20 | 台州市黄岩百业模具厂 | Folding mechanism and use this folding mechanism's chair |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105380434B (en) | 2018-01-23 |
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