CN2897032Y

CN2897032Y - Foldable chair frame

Info

Publication number: CN2897032Y
Application number: CNU2006200552192U
Authority: CN
Inventors: 崔宽峻
Original assignee: Xiamen Innovation Metal Products Co Ltd
Current assignee: Xiamen Innovation Metal Products Co Ltd
Priority date: 2006-02-20
Filing date: 2006-02-20
Publication date: 2007-05-09
Anticipated expiration: 2016-02-20

Abstract

The utility model discloses a folded chair frame, including a first crossing component, a second crossing component and two front legs, two back legs, two horizontal bars, two back bars and two arms which are symmetrically arranged on both sides of the first and second crossing components. The top of the first crossing component is pivotally arranged on the front of the horizontal bar, the bottom is pivotally connected to the lower part of the front leg, the middle section of the front leg is pivotally connected to the middle section of the horizontal bar, the top is pivotally connected on the top of the back leg, the back of the arm is pivotally connected to the back shaft and the middle section of the arm is pivotally connected to the top of the front leg or back leg, wherein, the back of the horizontal bar and the bottom of the back shaft are pivotally connected to the first sliding sleeve which is arranged on the upper part of the back leg in a sliding manner. The upper section of the first sliding sleeve on the back leg is provided with a restriction unit to restrict the upwards sliding height of the first sliding sleeve, the top of the second crossing component is pivotally connected to the upper section of the back shaft while the bottom section and the back of the reinforced shaft are pivotally connected to the second sleeve. The second sliding sleeve is arranged on the lower section of the back leg and the front of the reinforced bar is pivotally connected to the lower section of the front leg. Such a structure is stronger.

Description

A kind of folding seat frame

Technical field

The utility model relates to a kind of folding seat frame.

Background technology

In the prior art, the structure that a kind of folding chair for rest frame arranged as shown in Figure 1, when the folding seat frame of this structure launches, because only support the location by cross bar 3 ' and the triangle mechanism that foreleg 1 ' and back leg 2 ' constitute, so, exist and support unstable defective, and, handrail 4 ' is that the rear end is articulated in back support bar 5 ' last, middle top pivoting point support by foreleg 1 ' and back leg 2 ', so handrail 4 ' support force is very weak, particularly the front end of handrail 4 ' does not have support, if bend very easily downwards when being stressed even fracture, fastness is poor.

The inventor improves its structure at the deficiency of above-mentioned folding chair for rest frame, has this case to produce then.

The utility model content

The folding seat frame that provides a kind of support more firm is provided the purpose of this utility model.

In order to reach above-mentioned purpose, solution of the present utility model is:

A kind of folding seat frame, comprise first cross members, second cross members and be symmetricly set on first cross members, two forelegs of the second cross members both sides, two back legs, two cross bars, two back support bar, two handrails, the top of first cross members is articulated in the front end of cross bar, the bottom is articulated in the lower end of foreleg, the stage casing of foreleg is articulated in the stage casing of cross bar, the top is articulated in the top of back leg, the rear end of handrail is articulated on the back support bar, the centre is articulated in the top of foreleg or back leg, wherein: the rear end of cross bar and the bottom of back support bar are articulated on first sliding sleeve together, the slip of first sliding sleeve is nested with the top at back leg, on the back leg be positioned at first sliding sleeve above also fixedly be nested with the locating part of sliding height on restriction first sliding sleeve, the top of second cross members is articulated in the upper end of back support bar, the rear end of bottom and bracing piece is articulated on second sliding sleeve together, the slip of second sliding sleeve is nested with the bottom at back leg, and the front end of bracing piece is articulated in the bottom of foreleg.

Described handrail is made up of two parts of mutual pivot joint, and the rear end of rear section is articulated on the back support bar, the centre is articulated in foreleg or the top of back leg, and the front end of forward part is articulated in the front end of cross bar.

After adopting said structure, the utility model not only has the triangle mechanism that cross bar and foreleg and back leg constitute in the prior art, and, obviously increased a bracing piece than existing bracing frame, another triangle mechanism that this bracing piece and foreleg and back leg constitute, two triangle mechanism together support chair framves, it is more firm to make whole folding seat frame support the location.

In addition, this reality useful novel handrail is divided into forward and backward two parts after, make forward and backward, the centre of handrail all have the strong point, support force strengthens, particularly the front end of handrail increases the strong point, fastness is better.

Description of drawings

Fig. 1 is a structural representation of commonly using product;

Fig. 2 is a structural representation of the present utility model;

Fig. 3 is half a folding state schematic diagram of the present utility model;

Fig. 4 is a full folding state schematic diagram of the present utility model.

The specific embodiment

See also Fig. 2 and cooperate shown in Fig. 3,4, be the preferred embodiment of a kind of folding support frame of disclosing of the utility model, comprise first cross members 1, second cross members 2 and be symmetricly set on two forelegs 3, two back legs 4, two cross bars 5, two back support bar 6, two handrails 7 of first cross members 1, second cross members, 2 both sides.

Front end, the bottom that the top of first cross members 1 is articulated in cross bar 5 is articulated in the lower end of foreleg 3.

Stage casing, the top that the stage casing of foreleg 3 is articulated in cross bar 5 is articulated in the top of back leg 4.

The top that the rear end of handrail 7 is articulated on the back support bar 6, the centre is articulated in foreleg 3 or back leg 4, present embodiment are the tops that the centre of handrail 7 is articulated in back leg 4, and as if the top that the centre of handrail 7 is articulated in foreleg 3, effect is identical.

Improvement of the present utility model is: the bottom of the rear end of cross bar 5 and back support bar 6 is articulated on first sliding sleeve 8 together, first sliding sleeve 8 slides and is nested with on the top of back leg 4, on the back leg 4 be positioned at first sliding sleeve 8 above also fixedly be nested with sliding locating part 9 highly on restriction first sliding sleeve 8; The rear end that the top of second cross members 2 is articulated in upper end, bottom and the bracing piece 10 of back support bar 6 is articulated on second sliding sleeve 11 together, and second sliding sleeve 11 slides and is nested with in the bottom of back leg 4, and the front end of bracing piece 10 is articulated in the bottom of foreleg 3.

Like this, when the utility model launches to use, first sliding sleeve 8 is upwards slided by back support bar 6 and cross bar 5 drives, simultaneously, second sliding sleeve 11 is also upwards slided by second cross members 2 and bracing piece 10 drives, when being butted on the locating part 9, first sliding sleeve 8 launches the location, at this moment, the utility model not only has the triangle mechanism that cross bar in the prior art 5 and foreleg 3 and back leg 4 constitute, and, obviously increase another triangle mechanism that constitutes by bracing piece 10 and foreleg 3 and back leg 4 than existing bracing frame, two triangle mechanism together support chair framves, it is more firm to make whole folding seat frame support the location.

Another improvement of the present utility model is: handrail 7 is made up of two

parts

71,72 of mutual pivot joint, the top that the rear end of rear section 72 is articulated on the back support bar 6, the centre is articulated in foreleg 3 or back leg 4, and the front end of forward part 71 is articulated in the front end of cross bar 5.Like this, forward and backward, the centre of handrail 7 all have the strong point, and particularly the front end of handrail 7 increases the strong point, and support force strengthens, and have prevented that effectively the front end of handrail 7 from occurring being stressed and the phenomenon of downward folding, and fastness is better.

Claims

1, a kind of folding seat frame, comprise first cross members, second cross members and be symmetricly set on first cross members, two forelegs of the second cross members both sides, two back legs, two cross bars, two back support bar, two handrails, the top of first cross members is articulated in the front end of cross bar, the bottom is articulated in the lower end of foreleg, the stage casing of foreleg is articulated in the stage casing of cross bar, the top is articulated in the top of back leg, the rear end of handrail is articulated on the back support bar, the centre is articulated in the top of foreleg or back leg, it is characterized in that: the rear end of cross bar and the bottom of back support bar are articulated on first sliding sleeve together, the slip of first sliding sleeve is nested with the top at back leg, on the back leg be positioned at first sliding sleeve above also fixedly be nested with the locating part of sliding height on restriction first sliding sleeve, the top of second cross members is articulated in the upper end of back support bar, the rear end of bottom and bracing piece is articulated on second sliding sleeve together, the slip of second sliding sleeve is nested with the bottom at back leg, and the front end of bracing piece is articulated in the bottom of foreleg.

2, a kind of folding seat frame as claimed in claim 1, it is characterized in that: handrail is made up of two parts of mutual pivot joint, and the rear end of rear section is articulated on the back support bar, the centre is articulated in foreleg or the top of back leg, and the front end of forward part is articulated in the front end of cross bar.