CN2566705Y

CN2566705Y - Connecting structure of back and support of office chair

Info

Publication number: CN2566705Y
Application number: CN 02247509
Authority: CN
Inventors: 苏淑娥
Original assignee: XINFENG INTERNATIONAL ENTERPRISE CO Ltd
Priority date: 2002-08-19
Filing date: 2002-08-19
Publication date: 2003-08-20
Anticipated expiration: 2012-08-19

Abstract

The utility model relates to a combination and connection structure of backrests and back rods of office chairs. A backrest is formed by the combination of a pad body, a back board and a rear board. After the back board is combined with the pad body, a combination seat which is additionally arranged on the rear part of the back board is pivoted with a downward back rod and the rear board is embedded and combined to the rear side of the back board. The utility model is characterized in that the rear board which corresponds to the position of the combination seat is provided with an open hole which is downwards extended to a bottom end to form an opening shape to make the backrest not butted and stoppered by the back rod when the backrest is leaned backwards. The outer side of the back rod can be penetrated through solidification through a sleeve piece. The bottom end of the back rod is combined to the bottom side of a sitting pad. A spacing block which is arranged on the combination seat of the back board and corresponds to the back pole is provided with a convex part, the inner part of which is a concave aperture for adapting to the journey of backward shift of the back rod when the backrest is leaned backwards. Therefore, the backrest can be used for enlarging the angle of backward lean with a shaft center of the pivoting position of the upper end of the back rod and the combination seat for achieving the progressive target of enhancing comfortable quality for embarkation people.

Description

Connecting structure between the backrest of office chair, back of the body bar

Affiliated field:

The utility model relates to a kind of office chair, relates in particular to the backrest of office chair, the connecting structure between back of the body bar.

Technical background:

With the enhancement day by day of work industrial production technology, the design of various industrial products can be said to change and be exceedingly fast, and if can constantly weed out the old and bring forth the new, increase practicality, progressive often can be taken the preemptive opportunities on market, increase competitiveness of product.

As mentioned above, with the manufacturing and designing of office chair tool that the creator was engaged in is example, the connecting structure that the backrest 10 of general office chair and back of the body bar are 20 as shown in Figure 1, usually back of the body bar 20 is the L shape, its bottom engages with metal system firm banking 30, then make up with backrest 10 upper end, backrest 10 is then by pad 101, backboard 102, back plate 103 combines, wherein these back of the body bar 20 upper ends are to be spirally connected group admittedly with back plate 103, so backrest 10 at all can't reclining, therefore its comfortableness is not good certainly, for another Fig. 2, shown in Figure 3, these backboard 102 rears moulding one connecting support 104 in addition wherein, and articulate back of the body bar 20 downwards, and back of the body bar 20 outsides can wear an external member 40 and form, lock knot one limited block 105 in addition on this connecting support 104 in addition, angle during with the layback of restriction backrest 10 (is supported the back of the body bar 20 and spacing of pulling by limited block 105 when swinging back, see Fig. 4), yet because this type of combination is formed, though its backrest 10 tools layback function, but elevation angle degree is subjected to the limit configuration influence of limited block 105 thereafter, and plate 103 is only established for the perforating 1031 of carrying on the back bar 20 after adding, all the other are closed, so can only swing back a little against backrest 10 in occupant's back, so the comfort of its use is still not good, therefore, in the market competition of this industry, if can break through this kind defective, then should increase competitiveness of product, and guarantee the leading of market.

In view of the above, the utility model creator is in line with the theory that constantly breaks through, at first expect having comfort if will reach backrest, do not influencing under the preceding topic of occupant's center of gravity, thereafter elevation angle degree must appropriateness add the great talent can, and then expect that if make the structural improvement at the corresponding connecting support of the back plate place of backrest be perforate, and the corresponding back of the body of perforate bar extends into the opening shape downwards, do not supported and pull so that the backrest layback time can not carry on the back bar, the corresponding back of the body of the limited block that is provided with on the connecting support of backboard again bar is established the jut that is depression in, the journey of dividing a word with a hyphen at the end of a line behind the back of the body bar when swinging back in response to backrest, then making backup plate can carry on the back articulated section, bar upper end is that the layback angle is strengthened in the axle center, then should solve the defective of aforementioned known articles for use.

Structure of the present utility model is depended on the back of the body and is combined by pad, backboard and back plate, backboard is with after pad combines, the connecting support of being established in addition by the backboard rear articulates downward back of the body bar, and back plate embedding is again tied in the backboard rear side, and refer to that mainly the back plate is a perforate to should the connecting support place offering, perforate extends downward the end and forms the opening shape, and the corresponding back of the body of the limited block that is provided with on the connecting support of backboard bar is established the jut that is depression in, the journey of dividing a word with a hyphen at the end of a line behind the back of the body bar when swinging back in response to backrest, making backrest be carried on the back bar upper end and connecting support articulated section is axle center and can strengthen back pivot angle degree.

Summary of the invention:

The purpose of this utility model is to provide a kind of backrest of brand-new office chair, the connecting structure between back of the body bar, mainly the corresponding connecting support of back plate by backrest is provided with perforate, and the corresponding back of the body of perforate bar extends into the opening shape downwards, and the corresponding back of the body of the limited block that is provided with on the connecting support of backboard bar is established the jut that is depression in, the journey of dividing a word with a hyphen at the end of a line behind the back of the body bar when swinging back in response to backrest, making backrest be carried on the back articulated section, bar upper end is axle center and can increase the layback angle, improves with the essence effect of the subsides back of the body comfortableness that reaches the occupant.

The purpose of this utility model is to realize like this, connecting structure between a kind of backrest of office chair, back of the body bar, wherein: backrest, be to combine by pad, backboard and back plate, this backboard is to be consolidated in the pad rear side, and backboard rear moulding one connecting support, and connecting support articulates downward back of the body bar, the connecting support rear is in conjunction with a limited block again, and plate embedding is then tied in the backboard rear side; Back of the body bar, upper end and connecting support articulate, and its outside utilizes an external member bag to establish, and external member is the preceding bar sheet of the system of moulding, the ducted body that back bar sheet butt joint forms, and the bottom of back of the body bar is incorporated into the firm banking of cushion bottom; It is a perforate that the connecting support place of the corresponding backboard of back plate offers, and perforate and corresponding back of the body bar extend downwards and form the opening shape to the bottom, and the corresponding back of the body of the limited block of connecting support combination bar establishes the jut that is depression in, the journey of dividing a word with a hyphen at the end of a line behind the back of the body bar when swinging back in response to backrest; This external member correspondence top tapping is fluting again, wears fixed thus downwards for back of the body bar;

According to last, answer the perforate of closing by back of the body pole pair, and the corresponding back of the body of limited block bar is provided with jut in the back plate, making backrest be carried on the back bar upper end and connecting support articulated section is axle center and can strengthen the layback angle.The back bar sheet of an external member fin of can limiting makes back of the body bar receive and pull, and the mat screw rod wears locking.

According to the above, because backrest 1 can paste the back of the body with occupant's back and strengthen the layback angle, occupant's subsides back of the body sense is splendid, comfortableness heightens (as shown in Figure 8) so make, therefore, not only can improve its comfortableness greatly, meet ergonomics, and can improve its product competitiveness greatly, to reach the target of creating life of product power again, this is main creation main idea of the present utility model place.

Description of drawings:

Fig. 1 is the structure cross-sectional schematic of a known office chair.

Fig. 2 is the part stereochemical structure exploded view of another known office chair.

Fig. 3 is the combining structure cross-sectional schematic of Fig. 2.

Fig. 4 is the layback illustrative view of Fig. 3.

Fig. 5 is a stereochemical structure exploded view of the present utility model.

Fig. 6 is a combining structure cross-sectional schematic of the present utility model.

Fig. 7 is a layback illustrative view of the present utility model.

Fig. 8 is a layback embodiment side view of the present utility model.

The specific embodiment:

The utility model is described in further detail below in conjunction with accompanying drawing

As Fig. 5, shown in Figure 6, mainly be meant the backrest 1 of office chair, the innovation connecting structure of 2 on bar of the back of the body, wherein:

Backrest 1, by pad 11, backboard 12 and back plate 13 combine, this backboard 12 is to be pulled by pad 11 bags to follow closely knot, and backboard 12 rear moulding one connecting support 121, connecting support 121 articulates downward back of the body bar 2, it articulates pattern can finish pivot joint by the mode that connecting support 121 has a pivoted hole 1211, make pad 11, it is that then put in the axle center with connecting support 121 articulated sections that backboard 12 combinations can be carried on the back bar 2, connecting support 121 rears are in conjunction with a limited block 15 again, and limited block 15 corresponding back of the body bars 2 are established the jut 151 that is depression in, the journey (for another Fig. 7) of dividing a word with a hyphen at the end of a line behind the back of the body bar 2 with in response to backrest 1 layback the time, Hou plate 13 then embedding is tied in backboard 12 rear sides, and it is a perforate 131 that 13 pairs of back plates should connecting support 121 places be offered, and perforate 131 and corresponding back of the body bar 2 and extend downwards to the bottom form the opening shape.

Back of the body bar 2, the pivot joint pattern of itself and connecting support 121 can be in the top horizontal tool one cross bar 21, be located in the pivoted hole 1211 and receive, back of the body bar 2 outsides can utilize an external member 3 bags to establish, external member 3 can be the ducted body of the system of moulding, the correspondence of bar sheet 31, back bar sheet 32 engages and forms before can being made as, its perforate 131 places, corresponding top are fluting 33, wear fixed thus downwards for back of the body bar 2, back bar sheet 32 fin (not drawing among the figure) of can limiting in addition, make back of the body bar 2 receive and pull, and mat screw rod 4 wears locking (as Fig. 6), and the firm banking 51 that the bottom of carrying on the back bar 2 is incorporated into cushion 5 bottoms again form.

Hold that upper member is formed and when implementing (as Fig. 5, Fig. 6, Fig. 7), because the corresponding closing of back of the body bar 2 (and external member 3) is in the perforate 131 of back plate 13, so making backrest 1 be carried on the back bar 2 upper ends and connecting support 121 articulated sections is axle center and can swinging back, and not carried on the back bar 2 keeps out, and back of the body bar 2 tops also receive in the jut 151 of being located at limited block 15 unrestrictedly, make backrest 1 can strengthen the layback angle.

To sum up respectively save describedly, the utility model makes the office chair tool promote aspect riding comfort much really, improves the value of product greatly.

Claims

1, the connecting structure between a kind of backrest of office chair, back of the body bar, wherein:

Backrest is to be combined by pad, backboard and back plate, and this backboard is to be consolidated in the pad rear side, and backboard rear moulding one connecting support, and connecting support articulates downward back of the body bar, and the connecting support rear is in conjunction with a limited block again, and plate embedding is then tied in the backboard rear side;

Back of the body bar, upper end and connecting support articulate, and its outside utilizes an external member bag to establish, and external member is the preceding bar sheet of the system of moulding, the ducted body that back bar sheet butt joint forms, and the bottom of back of the body bar is incorporated into the firm banking of cushion bottom;

It is characterized in that:

It is a perforate that the connecting support place of the corresponding backboard of back plate offers, and perforate and corresponding back of the body bar extend downwards and form the opening shape to the bottom, and the corresponding back of the body of the limited block of connecting support combination bar is established the jut that is depression in, the journey of dividing a word with a hyphen at the end of a line behind the back of the body bar when swinging back corresponding to backrest; This external member correspondence top tapping is fluting again, and back of the body bar wears fixed thus downwards;

Answer the perforate of closing in the back plate by back of the body pole pair, reach the corresponding back of the body of limited block bar and be provided with jut, backrest is that the layback angle is strengthened in the axle center with back of the body bar upper end and connecting support articulated section.

2, the backrest of a kind of office chair as claimed in claim 1, the connecting structure of the back of the body between bar is characterized in that: the back bar sheet of an external member fin of can limiting, and will carry on the back bar and receive and pull, wear locking by screw rod.