CN2538604Y

CN2538604Y - Foldable back structure for walker

Info

Publication number: CN2538604Y
Application number: CN 02207988
Authority: CN
Inventors: 陈沧溋
Original assignee: JD Components Co Ltd
Current assignee: JD Components Co Ltd
Priority date: 2002-03-27
Filing date: 2002-03-27
Publication date: 2003-03-05
Anticipated expiration: 2012-03-27

Abstract

A folding backrest structure for transparent seats is arranged between a transport seat and a backrest, which comprises a first tube, a second tube, a clamp element, an elastic element. Wherein, one end of the first tube is fixed on the transparent seat. One side of the other end of the first tube is arranged with a pivot. The other side is arranged with a convex clamp part. An upper end of the second tube is fixed with the backrest. One side of a bottom end of the second tube is pivoted with the first tube and the other side is arranged with two convex pivotal lugs. In addition, a middle section of the clamp element is pivoted between two pivotal lugs. One upper end of the clamp element is arranged with a press part. A bottom end of the clamp element is arranged with a hooking part to hook the clamp part of the first tube. One end of the elastic element contacts the second tube and the other end contacts the press part of the clamp element. The press part of the clamp element is pressed to rotate and swing along the pivot end of the middle section, thus making the hooking part of the clamp element disconnected with the clamp part of the first tube and rotating an originally vertical backrest to a horizontal one.

Description

But the convertible of bicycle seat leans against structure

Technical field

The utility model is relevant with seat, but particularly leans against structure about a kind of convertible as the electric walk instead vehicle seats.

Background technology

Known to the skill of just going ahead of the rest, generally in order to the electric cycle of elder or disabled's use, its cushion is fixedly arranged on this electric cycle mostly, so the volume of this electric cycle can't change; We imagine a problem now: suppose to have whole members (have a usual custom among the member and use old man or the disability personnel of electric cycle as walking-replacing tool) of one family will arrive the countryside and play, generally the luggage boot of family-sized car can't be installed in an electric cycle (especially electric vehicle seat lean against part) at all; If be not with electric cycle, the action that old man or disability personnel arrive behind the destination can produce great inconvenience again, causes above-mentioned family as desiring to hold the whole family family when movable, produces puzzlement greatly.And this electric cycle is not when using, and is comparatively huge because of its volume, also has sizable puzzlement in collection.

The utility model content

But main purpose of the present utility model is to provide a kind of convertible of bicycle seat to lean against structure, and leaning against in time spent not of its seat can be amounted to, to reduce the occupied volume of this car of riding instead of walk, to be convenient for carrying and to collect.

For achieving the above object, but the convertible of bicycle seat provided by the utility model leans against structure, and it includes:

One first pipe fitting is bending, and the one horizontal ends is fixed in the seat main body of the car of riding instead of walk, and the side vertical end is responsible for mouthful side near this seat body and is provided with an articulated section outward in addition, and convexes with a fastener in addition outward in a relative side;

One second pipe fitting, its upper end fixes with the leaning against of car of riding instead of walk, and the bottom mouth of pipe then is articulated with the articulated section of this first pipe fitting near a side of seat body, and the another side then convexes with two mutual parallel pivot joint ears outward;

One holding piece, its interlude are hubbed at two of this second pipe fitting and articulate between ears by a pivot, its upper end is provided with one outward partially and pulls splenium, and its bottom is then extended toward the direction of this seat body and is provided with one and colludes the card division, and just can collude the fastener that is stuck in this first pipe fitting;

One elastic element, an end are pressed against this second pipe fitting, and end then supports the splenium of pulling of being located at this holding piece in addition, in order to the horizontal maintenance of this holding piece of start one desired location;

By pulling the splenium of pulling of pressing this holding piece, make it along the swing of interlude pivot pin end, impelled the fastener that the card division breaks away from this first pipe fitting that colludes of this holding piece, and can will originally become the swing that leans against of vertical to become horizontal.

Wherein colluding between card division and its end of this holding piece is formed with an inclined-plane again.

Wherein this holding piece colludes the also parallel again pressure section that convexes with, card division top.

Wherein this elastic element is a torsion spring, and this torsion spring has two circle portions and is arranged in this and two articulates pivot between ear, and the portion that supports in the middle of is for supporting the splenium of pulling of being located at this holding piece, and dual side-edge supports portion and is located at this second pipe fitting for supporting.

Description of drawings

Below lift a preferred embodiment conjunction with figs. the utility model is further described, wherein:

Fig. 1 is the three-dimensional appearance scheme drawing of the utility model embodiment.

Fig. 2 is the exploded perspective view of Fig. 1.

Fig. 3 is the cutaway view of the utility model embodiment.

Fig. 4 is that the utility model embodiment should lean against the view when amounting to.

Fig. 5 is the view of this holding piece inlay card of the utility model when going into this fastener.

The specific embodiment

At first see also Figure 1 and Figure 2, but the convertible of the bicycle seat that the utility model embodiment is provided leaning against structure, is objective for implementation with an electric cycle, and it includes:

One first pipe fitting 10, generally be bending, one horizontal ends 11 is fixed on the electric cycle, 12 of side vertical end definite length extended up in addition, the mouth of pipe place of this vertical end 12 convexes with an articulated section 13 outward near a side of seat body 2, and convexes with a fastener 14 in addition outward in a relative side.

One second pipe fitting 20, its upper end 4 fixes with leaning against of electric cycle, other holds the mouth of pipe to convex with an articulated section 21 outward near a side of seat body 2, and card also must be worn mutually with the articulated section 13 of this first pipe fitting 10, and utilize one to pass this two articulated section 13﹠amp in this articulated section 21; 21, so that this first pipe fitting 10 and second pipe fitting 20 are articulated, impelling this to lean against 4 can amount to respect to this seat body 2, this second pipe fitting 20 then convexes with two mutual parallel pivot joint ears 22 in addition outward with respect to a side of this articulated section 21, and each articulates, and then each has laterally provided a pivot hole 221 on the ear 22.

One holding piece 30, generally be "〉" shape, its interlude is horizontally set with an axis hole 31 and just can be located in two of this second pipe fitting 20 and articulates 22 in ears, and be hubbed at this two pivot hole 221 that articulates ear 22 by a pivot 50, its upper end is provided with one outward partially and pulls splenium 32, its bottom is then extended toward the direction of this seat body 2 and is provided with one and colludes card division 33, and this colludes between card division 33 and holding piece 30 ends and then is formed with an inclined-plane 34, and colludes the parallel again pressure section 35 that convexes with, top of card division 33 in this.

One elastic element 40, it in present embodiment a torsion spring, this torsion spring has two circle portions 41 and wears for this pivot 50, support in the middle of one portion 42 for support be located at this holding piece 30 pull splenium 32, and dual side-edge is located at this second pipe fitting 20 to portion 43 for supporting, when this elastic element 40 must be in this holding piece 30 along these pivot 50 beats, in order to this holding piece 30 horizontal maintenances one desired location of start.

The utility model when this lean against 4 with this seat body 2 when being normal operating condition, the splenium 32 of pulling of this holding piece 30 is subjected to the centre of this elastic element 40 to support portion 42 contact outward, impel the card division 33 of colluding of this holding piece 30 oppositely closely to collude the fastener 14 that is stuck in this first pipe fitting 10, and make this first pipe fitting 10 and second pipe fitting 20 combine (as shown in Figure 3) closely, therefore leaning against 4 can normally use for the rider.

And when electric cycle is desired to transport or collected, the utility model must by pull press this holding piece 30 pull splenium 32, impel it to be the direction beat of axle center toward this second pipe fitting 20 along this pivot 50, and utilize the principle of lever and impel this holding piece 30 collude card division 33 toward relative direction beats, that is this colludes the fastener 14 that card division 33 promptly breaks away from this first pipe fitting 10, this moment the operator can grip pressure this lean against 4 direction swings toward these seat body 2, become horizontal with 4 swings that lean against that will become vertical originally, as shown in Figure 4, so can reach the purpose that reduces this occupied volume of car of riding instead of walk.

Again, lean against 4 when desiring to turn back the running condition that is vertical again when what be collapse state, the operator leans against 4 as long as upwards pull this, the fastener 14 of this first pipe fitting 10 can be resisted against the inclined-plane 34 of this holding piece 30 earlier at this moment, as shown in Figure 5, guiding by this inclined-plane 34, and will make the card division 33 of colluding of this holding piece 30 successfully slip into and collude the fastener 14 that is stuck in this first pipe fitting 10, and make this first pipe fitting 10 combine closely again with second pipe fitting 20, the operator need not push this holding piece 30, and is quite convenient in the operation.

In addition, the pressure section of colluding 33 tops, card division 35 designs of this holding piece 30 of the utility model, must collude card division 33 in this colludes when being stuck in this fastener 14, this pressure section 35 gets the apical margin that is pressed against this fastener 14 simultaneously, and will make this holding piece 30 and this fastener 14 to collude card effect more firm, and prevent 20 loose situations of shaking of this first pipe fitting 10 and second pipe fitting.

Moreover, what must be illustrated is, this elastic element 40 can also substitute by a compression spring in the utility model, one end of this compression spring can be pressed against this second pipe fitting 20, in addition end then support be located at this holding piece pull splenium 32, it can reach these holding piece 30 horizontal functions that remain in a desired location of start equally.

Advantage of the present utility model is that this leans against, and to amount to mechanism very simple, can amount to this by the shirtsleeve operation mode and lean against 4, makes the collection of battery-driven car or transportation quite convenient; And must lean against at 4 o'clock in upwards pulling this, making this lean against 4 immediately becomes running condition, more convenient practicality in the operation.

Claims

1. but the convertible of a bicycle seat leans against structure, and between being located at the seat main body of the car of riding instead of walk and leaning against, it includes:

One elastic element, an end are pressed against this second pipe fitting, and end then supports the splenium of pulling of being located at this holding piece in addition.

2. but the convertible according to the described bicycle seat of claim 1 leans against structure, it is characterized in that, wherein colluding between card division and its end of this holding piece is formed with an inclined-plane again.

3. but the convertible according to the described bicycle seat of claim 1 leans against structure, it is characterized in that, wherein this holding piece colludes the also parallel again pressure section that convexes with, card division top.

4. but the convertible according to the described bicycle seat of claim 1 leans against structure, it is characterized in that, wherein this elastic element is a torsion spring, this torsion spring has two circle portions and is arranged in pivot between this two pivot joints ear, the portion that supports in the middle of one supplies to support the splenium of pulling of being located at this holding piece, and dual side-edge is located at this second pipe fitting to portion for supporting.