阅读说明：本技术 一种可以稳定悬挂包裹的防盗靠背椅 (A kind of antitheft chair that can stablize suspension package ) 是由 孙培勇 雷冬 潘华思 王康 闵磊 于 2019-08-27 设计创作，主要内容包括：本发明专利公开了一种可以稳定悬挂包裹的靠背椅,其特征在于,包括：前腿、后腿、椅座、靠背、包裹匣、加固杆、防盗盖、铰链、安全锁,所述的靠背上设有包裹匣,所述的前腿垂直于水平线,所述的后腿向前腿的方向倾斜设置,所述后腿的支点和包裹匣的最右侧点在同一垂直线上。本发明不仅可以坐人并保证舒适度,而且可以随意放置书包等包裹,同时保证不翻倒,将空间多重利用,提高空间利用率,方便书包等包裹的悬挂,还可以防止包裹被盗。(The invention patent discloses a kind of chair that can stablize suspension package, it is characterized in that, it include: foreleg, back leg, seat, backrest, package casket, reinforcing bar, pilferproof closure, hinge, safety lock, described is equipped with package casket by back, the foreleg is perpendicular to horizontal line, the back leg is obliquely installed to the direction of foreleg, and the fulcrum of the back leg and the rightmost side point of package casket are in same vertical line.The present invention can not only sit people and guarantee comfort level, but also can arbitrarily place the package such as school bag, while guarantee overturning-free, by the multiple utilization in space, improve space utilization rate, facilitate the suspension of the packages such as school bag, package can also be prevented stolen.)

1. the chair that one kind can stablize suspension package characterized by comprising foreleg (1), seat (3), leans on back leg (2) (4), package casket (5), reinforcing bar (6), pilferproof closure (7), hinge (8), safety lock (9) are carried on the back, the backrest (4) is equipped with package Casket (5), the foreleg (1) are obliquely installed perpendicular to horizontal line, the back leg (2) to the direction of foreleg (1), the back leg (2) rightmost side point of fulcrum and package casket (5) is in same vertical line.

2. it is according to claim 1 can stablize suspension package chair, which is characterized in that the back leg (2) and hang down The angle β of straight line is 21~24 °, and it is 11~15 ° that the angle of the backrest (4) and vertical line, which is α,.

3. the chair according to claim 1 that suspension package can be stablized, which is characterized in that foreleg and back leg fulcrum it Between distance be L, the center of gravity line of chair with back leg fulcrum at a distance from be a, backrest center of gravity line at a distance from back leg fulcrum be b, In,And

4. the chair according to claim 1 that suspension package can be stablized, which is characterized in that the foreleg (1), after Leg (2) is fixedly connected by reinforcing bar (6).

5. the chair according to claim 1 that suspension package can be stablized, which is characterized in that the package casket (5) It is equipped with pilferproof closure (7).

6. the chair according to claim 1 that suspension package can be stablized, which is characterized in that on the pilferproof closure (7) Equipped with safety lock (9).

7. the chair according to claim 1 that suspension package can be stablized, which is characterized in that the pilferproof closure (7) is logical Hinge (8) is crossed to connect with backrest (4).

8. the chair according to claim 1 that suspension package can be stablized, which is characterized in that two sides of backrest (4) Face and be equipped with below package casket (5).

Technical field

The present invention is to be related to a kind of chair structure, concretely relates to a kind of backed can stablize of band and hangs packet The Anti-theft chair wrapped up in.

Background technique

Nowadays, in dormitory, have become outfit indispensable in dormitory with backed chair.Dormitory simultaneously Space on interior each student's desk is not very big, thus school bag is placed on above desk just and seems and more take up space, so learning Life can be to always habitually liking school bag being suspended on the backrest of chair after dormitory or be placed on the seat of chair.Based on this two The problem of planting the method for placing school bag, producing two puzzlement people: on the seat that school bag is placed on chair, school bag is biggish Volume causes the space taken one's seat on chair to remain little, and student can sit with also just not having, even if can sit with having, also almost Without too big area of taking one's seat, sit up like a hen on a hot girdle.And when the back that leans on for school bag being suspended on chair, many times due to book The quality of packet is larger, causes to translate into when chair unloaded (meaning that chair only hangs school bag without sitting people, similarly hereinafter herein) and one The more thing of headache.The principle wherein overturned is as follows:

When the backrest of chair, which hangs school bag, is in balance, if the weight of chair is P, the weight of school bag is F, chair front and back The holding power of leg is respectively F₁、F₂, the horizontal distance of direction such as Fig. 1, two moment chair rear legs are respectively a, b.Then to chair zero load When equilibrium equation are as follows:

∑M_O=0:Pa-F₁L-Fb=0；

It acquires:

With the increase of school bag weight F, F₁Reduce, works as F₁When being reduced to zero,

When F continues to increase, ∑ M_O: Pa < Fb, chair will fall over.

So chair maximum can only suspended weights beSchool bag weight, be restricted larger.

Therefore, we measure in view of this consideration, in conjunction with mechanics principle, improve to common with backed chair, So that improved chair can both sit people, the package such as school bag can also be hung under any circumstance and is unlikely to overturn, no Space utilization rate is improved only, also solves the problems, such as school bag placement；Increase safety device simultaneously, makes chair structure can be with Prevent package stolen.

Summary of the invention

The purpose of the present invention is overcoming deficiency in the prior art, provides a kind of can stablize and hang the antitheft of package Chair.

In order to solve the above technical problem, the present invention provides following technical solutions:

A kind of chair that can stablize suspension package characterized by comprising foreleg, back leg, seat, backrest, it is described By back be equipped with package casket, perpendicular to horizontal line, the back leg is obliquely installed the foreleg to the direction of foreleg, described The fulcrum of back leg and the rightmost side point B of package casket are in same vertical line, to ensure that the center of gravity for wrapping up casket is located at chair center of gravity line Between the fulcrum O of back leg bottom.

Wherein, it is 21~24 ° that the angle of the back leg and vertical line, which is β, the angle α of the backrest and vertical line is 11~ 15°。

Wherein, the distance between foreleg and back leg fulcrum are L, and the center of gravity line of chair is a, backrest at a distance from back leg fulcrum Center of gravity line is b at a distance from back leg fulcrum, whereinAnd

Preferably, the foreleg, back leg are fixedly connected by reinforcing bar, preferably foreleg and foreleg, foreleg and back leg Between be fixedly connected by reinforcing bar.

Preferably, the package casket is equipped with pilferproof closure.

Preferably, the pilferproof closure is equipped with safety lock.

Preferably, the pilferproof closure is connect by hinge with backrest.

Working principle of the present invention is as follows: traditional chair is improved, by the back leg bottom of traditional chair Fulcrum O move back so that the center of gravity vertical line of package weight F is moved to it of chair center of gravity vertical line and back leg bottom fulcrum O Between；It adds with two sides behind backrest simultaneously and wraps up casket, when school bag is placed on inside package casket, the constraint for wrapping up casket can be protected The center of gravity vertical line of card package will not be displaced to the right side of fulcrum O.According to mechanics principle, chair just will not be overturned, and can be stablized Ground hangs the package such as school bag.

When school bag is placed on inside the subsequent package casket of backrest, mechanical analysis is carried out to chair and school bag:

∑M_O=0:Pa+Fb-F₁L=0

Assuming that chair can overturn clockwise just, then F₁=0, equation will be invalid, it is clear that chair can not be suitable around fulcrum O Hour hands overturn；Similarly, chair is also impossible to overturn counterclockwise around fulcrum A.So fulcrum O is moved back and after backrest 4 plus package Casket can guarantee that chair is overturning-free.As long as theoretically the strength of materials of chair is secure, the weight of school bag is just unrestricted.

In addition, hinge opens and closes pilferproof closure arbitrarily, so that package can take out and be packed at any time package casket, in conjunction with safety Lock can prevent package stolen.

The utility model has the advantages that

Compared with prior art, the beneficial effects of the present invention are:

The present invention provides a kind of novel chairs that can stablize the packages such as suspension school bag, utilize the principle of mechanics, solution Chair of having determined is easy the problem of overturning after hanging the package such as school bag.People can not only be sat and guarantee comfort level, but also can be with The package such as school bag is arbitrarily placed, while guaranteeing overturning-free, by the multiple utilization in space, space utilization rate is improved, school bag etc. is facilitated to wrap The suspension wrapped up in can also prevent package stolen.

Detailed description of the invention

Fig. 1 is the side block diagram and force analysis figure for improving rear backrest chair.

Fig. 2 is the tomograph for improving rear backrest chair.

Specific embodiment

Present invention is further described in detail with specific embodiment with reference to the accompanying drawing:

In Fig. 1~2,1 it is foreleg, 2 is back leg, 3 is seat, 4 is backrest, 5 is package casket, 6 is reinforcing bar, 7 is antitheft Lid, 8 be hinge, 9 be safety lock.

A kind of chair that can stablize suspension package characterized by comprising foreleg, back leg, seat, backrest, it is described Be equipped with package casket by back, perpendicular to horizontal line, the back leg is set the foreleg to the direction inclination departing from foreleg It sets, the fulcrum of the back leg and the rightmost side point B of package casket are in same vertical line, to ensure that the center of gravity for wrapping up casket is located at chair Between center of gravity line and back leg bottom fulcrum O.

The angle β of the back leg and vertical line is 21~24 °, and the angle α of the backrest and vertical line is 11~15 °.

Wherein, the distance between foreleg and back leg fulcrum are L, and the center of gravity line of chair is a, backrest at a distance from back leg fulcrum Center of gravity line is b at a distance from back leg fulcrum, whereinAnd

Preferably, the foreleg, back leg are fixedly connected by reinforcing bar, preferably foreleg and foreleg, foreleg and back leg Between be fixedly connected by reinforcing bar.

Preferably, the package casket is equipped with pilferproof closure.

Preferably, the pilferproof closure is equipped with safety lock.

Preferably, the pilferproof closure 7 is connect by hinge 8 with backrest 4.Hinge 8 opens and closes pilferproof closure 7 at any time, Package just can take out and be packed at any time package casket 5, in conjunction with safety lock 9, package can be prevented stolen.

Working principle of the present invention is as follows: traditional chair is improved, by 2 bottom of back leg of traditional chair Fulcrum O move back so that the center of gravity vertical line of package weight F is moved between chair center of gravity line and chair rear leg fulcrum O；Simultaneously Plus package casket 5 after backrest 4, when school bag is placed on package 5 the inside of casket, the constraint of package casket 5 can guarantee the center of gravity of package Vertical line will not be displaced to the right side of fulcrum O.According to mechanics principle, chair just will not be overturned, and can steadily hang school bag etc. Package.

Wherein, specific mechanics principle are as follows: when school bag is placed on 4 subsequent package case of backrest, to chair and school bag into Row mechanical analysis:

∑M_O=0:Pa+Fb-F₁L=0

Assuming that chair can overturn clockwise just, then F₁=0, equation will be invalid, it is clear that chair can not be suitable around fulcrum O Hour hands overturn；Similarly, chair is also impossible to overturn counterclockwise around fulcrum A.So fulcrum O is moved back and after backrest 4 plus package Casket can guarantee that chair is overturning-free.Meanwhile as long as theoretically the strength of materials of chair is secure, the weight of school bag is just unrestricted System.

Improved chair can not only sit people and guarantee comfort level, but also can arbitrarily place the package such as school bag, together When, guarantees overturning-free, improves space utilization rate, package can also be prevented stolen.

Undeclared part involved in the present invention is same as the prior art or is realized using the prior art.