CN2072587U - Improved rolling door spring - Google Patents

Abstract

The utility model relates to an improved rolling door spring, which is provided with a hollow housing, a shaft lever, a free wheel which is pivoted to the two ends of the shaft lever, a rolling door which is bridged on the free wheel and a spring which is sheathed on the periphery of the shaft lever. One end of the spring is connected with the free wheel. The spring is gradually contraction at appropriate point along the axial direction of the shaft lever. When the spring arranged on the rolling door, the appropriate distance is formed between each ring, and the other end of the spring is fixedly arranged on the appropriate point near the center of the shaft lever to form a design whose forming ability is very good. When the rolling door pulling downwards, the free wheel is driven by the rolling door and turns the spring to make the separation distance disappear and the tensional force of the spring distributed uniformly; when the rolling door pushing upward, the rolling door can achieve the effect of labor saving by the uniform resilience of the spring.

Description

Improved rolling door spring

The utility model relates to a kind of improved rolling door spring, knows clearly it, is meant a kind of improvement that utilizes spring especially, the rolling door spring that makes rolling door be easy to be pulled.

Press, the rolling door structure of commonly using all as depicted in figs. 1 and 2, as seen from the figure, this rolling door of commonly using lies in the housing 20 that wall 10 and door 15 are provided with a hollow, this housing 20 is more downward being extended with being referred to as track 22 along the edge of door 15, and that these housing 20 inwall two sides are equipped with junction surface 24(is inner for to being referred to as design because of it, so only illustrate) with the partial sectional view of Fig. 1, this junction surface 24 is to entreat among housing 20 to screw togather element 32 suspensions for the two ends of an axostylus axostyle 30, and be articulated with a free wheel 40 on the appropriate location at these axostylus axostyle 30 two ends respectively, 30 of this free wheel 40 and axostylus axostyles are with the element of a ball bearing 42 as loose joint between the two, use making free wheel 40 can have controlled and ability rotation.Please continue to consult shown in Figure 1, this rolling door 50 is to be wound in outside the free wheel 40 to enclose, but wherein more cross-over connection and being fixed on two pairs of anchor rings that are referred to as free wheel 40 of the fixed end 52 of this rolling door 50, and the movable end 54 of rolling door 50 has a flange 542, just can contact at the blocking part 26 of housing 20, so and rolling door 50 can mat free wheel 40 and is reached and arbitrarily furl or stretch, mainly be spring 60 to be arranged because this free wheel 40 links, this spring 60 is to be the long isometrical design of straight shape and to be sheathed on and to enclose outside the axostylus axostyle 30, the appropriate location near axostylus axostyle 30 central authorities is fixed in one end system, and its other end and free wheel 40 link.

Moreover, as shown in Figure 2, when the movable end 54 of pulling rolling door 50 downwards the time, the fixed end 52 of this rolling door 50 can drive free wheel 40 rotations, and spring 60 is reversed, when waiting its movable end that promotes rolling door 50 54 upwards, can reach the effect of switch rolling door by the restoring force of spring 60; But the structure of the above-mentioned rolling door spring of commonly using still has following shortcoming to be worth improving:

1. this is commonly used between each circle of rolling door spring 60 and all is the design of no gap, in pulling rolling door 50 downward also torsionsprings 60, will produce the distortion situation (as wavy) of irregular shape, cause stressed skewness on the body of spring 60, be as shown in Figure 2, the part that this spring 60 has is squeezed and is contracted together the part tension excesssive gap that has, cause elastic fatigue in behavior in service soon, the relative rolling door that causes has shortcoming not easy to operate soon.

2. all be the design of no gap between each circle of this rolling door spring of commonly using 60, because spring 60 is in the direction of reversing (song) arrangement property extremely inhomogeneous (as shown in Figure 2), so when spring 60 drive rolling doors upwards reclaim, cause restoring force can't concentrate at last because of repealing by implication, or because of direction to arrange property uneven uncontrollable smoothly and shortcoming such as systematicness operation rolling door, the difficulty effort when producing rolling door and upwards pushing back collection and irregular.

3. based on above-mentioned discussion, known rolling door spring just becomes eccentric as shown in Figure 3 state in use for some time usually, and the directionality when making operation is poorer, and the wheelbase of disalignment is bigger, and is stressed more inhomogeneous; As shown in Figure 3, one of them bar spring is to right avertence, and another spring is then to left avertence, the relative distance of two units that presented deviation, and the difference of its practicality is self-evident.

Therefore, the main purpose of the utility model is to provide a kind of improved rolling door spring, and it can reach the smooth and easy labour-saving of switch rolling door effect.

Another purpose of the utility model, the improved rolling door spring that be to provide that a kind of (song) power is big with reversing, the direction marshalling (evenly) of spring body and saving material reduces cost.

According to above-mentioned purpose, improved rolling door spring one end of the present utility model is the state of contraction gradually, and distance between being formed with suitably between each circle of this spring the utlity model has the splendid characteristic of direction arrangement property and can make, and uses to reach the smooth and easy labour-saving of switch rolling door effect.

For the purpose of this utility model, effect and structural feature there being more detailed clear and definite understanding, lifting a preferred embodiment conjunction with figs. now and describe.

The accompanying drawing drawing is simply described as follows:

Fig. 1 is a partial sectional view of commonly using the rolling door spring.

Fig. 2 is a partial sectional view of commonly using the rolling door spring.

Fig. 3 is an elevation of commonly using the rolling door spring.

Fig. 4 is the partial sectional view of the utility model one preferred embodiment.

Fig. 5 is the partial sectional view of the utility model one preferred embodiment.

See also Fig. 4, this figure is the partial sectional view of the utility model one preferred embodiment.As shown in FIG., housing 20a, axostylus axostyle 30a, free wheel 40a, ball bearing 42a, structure such as rolling door 50a does not all change, feature place because of all non-the utility model of above-mentioned several parts, event is superfluous words not, the utility model lay special stress on part tie up in, be symmetrical in as shown in this figure axostylus axostyle 30a axis (to) spring 70, the one end is linked to free wheel 40a, spring is along the state that axially is contraction gradually at appropriate location of axostylus axostyle 30a, promptly reduce gradually along axial its internal diameter, and apart from d, its other end can be fixed in the appropriate location near axostylus axostyle 30a central authorities, and is the splendid design of an arrangement property between this spring 70 was formed with suitably between each circle when being installed on rolling door; And show that by figure the internal diameter of the other end of spring 70 convergence is covered on edge outside the axostylus axostyle 30a; Certainly, before spring 70 of the present utility model was not installed on rolling door, this spring 70 can be not to be drawn into as yet to have spacing d and the person that only is the two-part.

See also Fig. 5, it is the partial sectional view of the utility model one preferred embodiment.When if the movable end 54a of pulling rolling door 50a is downward, the fixed end 52a of this rolling door 50a can drive free wheel 40a rotation, and when spring 70 reverses, between above-mentioned apart from d promptly disappear (this spacing d just can be the spacing of putting that the number of coils increases) because of spring 70 bears torsion, and still be symmetrical in axostylus axostyle 30a axis (to), the torsion that is born with spring 70 can reach the state of even distribution and be even oppressed state; And the movable end 54a that promotes rolling door 50a is when making progress, and can by spring 70 evenly and the restoring forces of rule reach laborsaving effect.Certainly, by Fig. 4,5 as can be known, at this spring 70 after being subjected to the external force effect, its spring inside diameter will be suitable reduction, the number of coils then is an amount of increase, that is the utility model is original just can become the indwelling space that the number of coils increases apart from d between set, make spring 70 after suffering external force, still can grow straight shape and be symmetrical in axostylus axostyle 30a axis (to).

Therefore as can be known, the utlity model has following advantage and effect:

1. as shown in Figure 5, the improved rolling door spring of the utility model, be so that spring 70 is formed with suitable spacing d and is two-piece design between each circle when being installed on rolling door, the inner-diameter portion whose that these spring 70 ends gradually contract is to the utmost close to footpath outside the axostylus axostyle 30a, when pulling rolling door 50a is downward, can make on the body of spring 70 distribution of force even, and use spacing d disappearance (converting the indwelling space that the number of turns increases to) in the compression process, and still be symmetrical in axostylus axostyle 30a axis (to), based on this spring 70 because evenly distributed by power, and unlikely presenting as commonly using the uneven or wavy phenomenon in rolling door spring gap, so under long-term the use, also the unlikely phenomenon that causes elastic fatigue also can prolong service life and easy operating relatively.

2. as shown in Figure 5, improved rolling door spring of the present utility model, to arrange property very even owing to spring 70 is oppressed the direction reversed, and still be symmetrical in axostylus axostyle 30a axis (to) and be long straight shape, do not resemble and commonly use rolling door spring and after being subjected to external force, namely be irregular wavy, so when spring 70 drive rolling door 50a upwards reclaim, this spring 70 is because have systematicness, so the recovery power of spring 70 cohesions can not repealed by implication, have the smooth and easy labour-saving of switch rolling door effect, that is rolling door upwards pushes away not difficult when reclaiming the Tibetan, leicht fallen D/A and extremely regular.

3. improved rolling door spring of the present utility model is to be two-piece design, this spring 70 is designed to the part that gradually contracts and has more the effect of saving material (about 1/4th), reducing cost except commonly using spring, has more characteristics such as prolonging service life, be easy to smooth operation, be laborsaving and regularly arranged.

4. based on aforementioned design feature, rolling door of the present utility model extremely is difficult for being eccentric state after effect, also gets final product smooth and easy use, and its practicality is splendid.

In sum, the principal character of improved rolling door spring of the present utility model is to be the state that an end shrinks gradually, and each circle system of this spring is formed with the design of suitable spacing, the utlity model has that torsion is big, direction is arranged the splendid characteristic of property and can make, use to reach smooth and easy laborsaving effect of switch rolling door and advantage.

Claims (2)

1, a kind of improved rolling door spring, it is to be installed on the rolling door, and rolling door includes at least:

The housing of one hollow;

One axostylus axostyle be that suspension is entreated among housing, and two ends is fixed on the housing;

At least two free wheels are the appropriate location that articulates respectively near the axostylus axostyle two ends;

One rolling door, its fixed end are cross-over connection and are fixed on the free wheel anchor ring that another movable end then contacts at the housing appropriate location, and

At least two springs all are that long straight shape and can being sheathed on encloses outside the axostylus axostyle, and the one end all is the appropriate location that is fixed near axostylus axostyle central authorities, and its other end all links with free wheel;

Of the present utility model being characterised in that: one of this spring end is linked to free wheel, spring is located the shape that contracts gradually along axially being at appropriate location of axostylus axostyle, promptly dwindle gradually along axial its internal diameter, and distance between this spring is formed with suitably between each circle when being installed on rolling door, its other end can be fixed in the appropriate location near axostylus axostyle central authorities, and is the splendid design of an arrangement property.

2, improved rolling door spring according to claim 1 is characterized in that, this spring was must not be drawn into the spring with spacing in advance before not being installed on rolling door as yet.

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