CN2630423Y - Ground spring - Google Patents

Abstract

A ground spring comprises a body, a cam axle, a tie, a plunger connected with an end of the tie and a flexible piece. The ground spring is characterized in that the body is provided with two fixed bases on the two sides of neighboring cam, a fixed base has an oblique corner and the other has a bulgy block. While the cam on the cam axle are a block formed by two partial circles of different sizes and the connecting area between the two partial circles is provided with a bulgy rim stretching out, and the circle with a relative big area is provided with an open groove that stretches out along radically. The tie is pinned in the open groove of the cam and an end of the tie pinned with the cam is provided with a bulgy arch bending outwards. A sliding base combined with the plunger is arranged, and the sliding base is provided with a flexible piece on each side of the tie. The other end of the second flexible piece combines with the first fender, and the two fenders, each of which has a sliding end protruding the fixed base, are jacketed in a fixed base separately. The utility model solves such problems as the on-off angle of the ground spring for fire doors is small, the occupied are is larger and it is inconvenient for the personnel to pass through.

Description

Floor spring

Technical field:

The utility model is a kind of floor spring, especially is a kind of floor spring that uses on automatic fire door.

Background technology:

Automatic fire door is by being installed in the electromagnet on the doorframe edge, make door be fixed on the position of opening, during if any fire alarm, electromagnet promptly can be opened automatically, and Men Zehui disengaging electromagnet is closed automatically, produce strong wallop when avoiding opening or closing, and then cause the damage of assembly, and use shown in Fig. 1 and 2, have the floor spring of hydraulic piston A structure, this known floor spring is by single cam drive, when the axle center of single cam rotated to 116 ° of positions, this list cam was promptly stuck mutually with roller, can't rotate again, therefore, the maximum opening angle of known floor spring is 116 °, and maximum closing angle is 116 °, and its anchor point then is 90 °, although can the left and right directions On/Off, be subjected to the restriction of doorframe or wall.So known floor spring has following shortcoming:

1, the On/Off angle of known floor spring is confined in 116 °, can't go extension again.

2, known floor spring is subjected to single cam drive structural limitations, when labeled door On/Off during to 116 ° of maximum angles, overexerts or energetically during gravity such as bump, the as easy as rolling off a log inner body that causes damages, and makes its functional failure as experience.

3, the anchor point of known floor spring is for fixing, so its purposes is restricted, and can't be applicable to specific environment.

4, when 90 ° of anchor points, labeled door and doorframe or wall are to be 90 ° of states to known floor spring at door lock, and then an occupation space is very big, the personnel that the cause inconvenience of coming in and going out.

Hence one can see that, uses the labeled door On/Off angle of known floor spring little, and it is bigger to take up room, and personnel come in and go out comparatively inconvenient.

For improving the above-mentioned various shortcomings of commonly using device construction, this case designer is to be engaged in lockset manufacturing industry experience for many years, and through the permanent research and experiment of making great efforts, development and Design goes out the utility model finally.

Summary of the invention:

The purpose of this utility model is to provide a kind of floor spring that is used for labeled door, and little to solve known floor spring On/Off angle, it is bigger to take up room, the technical problem that it is inconvenient that personnel come in and go out.

The technical scheme that the utility model solves the problems of the technologies described above is as follows:

A kind of floor spring, include body, camshaft, pull bar, with piston and elastic component that pull bar one end is connected, it is characterized in that: this body is respectively arranged with two holders of tool inclination edge and tool projection in contiguous cam both sides; Cam on this camshaft is the blocks that the parts circle that do not wait by two is formed, and these two parts circle joints of not waiting are provided with an outward extending convex edge, and this cam is provided with the fluting of extension radially on the bigger part of area is round; This pull bar is articulated in the fluting of cam, and this pull bar is articulating the cambered surface that is provided with outwardly-bent protrusion on the end with cam; Be provided with the slide that combines with piston, this slide is respectively equipped with an elastic component in the pull bar both sides, this two elastic component end in addition combines with a block body respectively, and this two block body is set on respectively in the holder, and wherein a block body has the sliding end that protrudes holder.

Above-mentioned floor spring is characterized in that: this elastic component is a spring.

The utility model is when being installed in electromagnet on the doorframe edge it is opened, camshaft is opened with door and is rotated, pull bar makes piston do the straight ahead motion thereupon thereupon moving, so that slide is pressed against on the elastic component thereupon, produce resistance and avoid impacting, cam convex edge on it in rotation process just can be pressed wherein on the block body simultaneously, and block body is pressed against on the elastic component, thus, can make door be 180 ° full open position.Otherwise, when electromagnet is opened automatically, and door breaks away from an electromagnet when closing, elastic component can be replied the shape that is original, withstanding slide simultaneously promotes piston and can simultaneously pull bar be pulled back and move, make camshaft drive the door rotation by pull bar, and the piston resistance that produces that moves in the through hole of body has been avoided impact, curved surface until cam is pressed against on the projection of a holder, and the cambered surface of pull bar also leans on the inclination edge of another holder, make the cam can't double swerve, and then make door be buttoned-up status.

Description of drawings:

Fig. 1 commonly uses device schematic diagram one.

Fig. 2 commonly uses device schematic diagram two.

Fig. 3 is a utility model and a schematic perspective view that combines.

Fig. 4 is a sectional schematic diagram of the present utility model.

To be the utility model be sectional schematic diagram when opening 180 ° in door to Fig. 5.

Fig. 6 is the section action schematic diagram of the utility model when door returns back to closed condition by opening.

Fig. 7 is that the utility model is the sectional schematic diagram when closing (0 °) state in door.

The sectional schematic diagram that Fig. 8 is the utility model door when being closed condition and opening to 150 °.

Fig. 9 is the utility model in the sectional schematic diagram of door when being closed condition and opening to complete opening (180 °) state.

The specific embodiment:

See also shown in Fig. 3,4, the utility model is provided with a body 10, in present embodiment is that a housing (only is familiar with this operator, still can other assembly be replaced), this body 10 is fixed in the bottom of door 20, the doorframe of these 20 cooperations is provided with the electromagnet (not shown), and is provided with a camshaft 11 in this body 10, and these camshaft 11 1 ends protrude from body 10 and are fixed on the door 20 (as shown in Figure 3) outward.This camshaft 11 is provided with a cam 12, this cam 12 is the block of being made up of two part circles that do not wait, and these two part circle joints of not waiting are provided with outward extending convex edge 121, and this cam 12 is provided with a fluting 123 that radially extends on the bigger part circle of area, be provided with an axostylus axostyle 13 in this fluting 123, be articulated with a pull bar 15 on this axostylus axostyle 13,13 of this pull bar 15 and axostylus axostyles are provided with roller 14, and this pull bar 15 is articulating the cambered surface 151 that is provided with outwardly-bent protrusion on the end with axostylus axostyle 13, these pull bar 15 other ends then join with a piston 30, and this piston 30 is to be set in the through hole 16 of body 10.

Moreover, this body 10 close on cam 12 both sides be respectively equipped be relatively fixed the seat 17,18, wherein a holder 17 is being outward extending inclination with cam 12 opposed edges, 18 of another holders with cam 12 relative positions on be provided with a projection 181, and be respectively equipped with the block body 19 that is resisted against its rear portion on these holders 17,18, block body 19 front ends that are arranged in holder 18 have the sliding end 191 that stretches out holder 18.Being arranged with an elastic component 40 on this two block body 19 respectively, is spring in present embodiment, and this two elastic component 40 is held to press in addition and is fixed on the slide 41, and this slide 41 combines with piston 30 or is integral.

See also Fig. 5, shown in 6, the control that breaks away from electromagnet when door 20, and when closing gradually by opening, cam 12 can rotate thereupon, the convex edge 121 that cam 12 originally was pressed on block body 19 sliding ends 191 also moves apart block body 19 thereupon, simultaneously, piston 30 can drive pull bar 15 and move, elastic component 40 on the slide 41 is stretched thereupon, curved surface 122 until cam 12 is pressed against on the projection 181 of holder 18, and simultaneously the cambered surface of pull bar 15 also can lean at another holder 17 and be on the edge at oblique angle, makes the cam 12 can't double swerve, so, can make door 20 be buttoned-up status (as shown in Figure 7).

See also again shown in Fig. 7,8,9, when door 20 is subjected to magnet control, and when opening gradually by closed condition, cam 12 is opened with door 20 and when rotating, pull bar 15 can move thereupon, makes piston 30 do the straight ahead motion thereupon, so that slide 41 movement therewith and compression elastic piece 40.In cam 12 rotates, its convex edge 121 just can be pressed wherein on the block body 19 (shown in the 8th figure), nationality is pressed against block body 19 on the elastic component 40 by cam 12 again, thus, can make door 20 be full open position, and order door 20 is when opening or closing, all can avoid producing strong wallop, and then cause the damage of assembly, simultaneously, can make door 20 be the state of opening fully.

Above-mentioned the utility model only illustrates with most preferred embodiment, and to being familiar with the personnel of this skill, when carrying out various variation examples, only these change example, all should be included in spirit of the present utility model and the scope.

Claims (2)

1, a kind of floor spring, include body, camshaft, pull bar, with piston and elastic component that pull bar one end is connected, it is characterized in that: this body is respectively arranged with two holders of tool inclination edge and tool projection in contiguous cam both sides; Cam on this camshaft is the blocks that the parts circle that do not wait by two is formed, and these two parts circle joints of not waiting are provided with an outward extending convex edge, and this cam is provided with the fluting of extension radially on the bigger part of area is round; This pull bar is articulated in the fluting of cam, and this pull bar is articulating the cambered surface that is provided with outwardly-bent protrusion on the end with cam; Be provided with the slide that combines with piston, this slide is respectively equipped with an elastic component in the pull bar both sides, this two elastic component end in addition combines with a block body respectively, and this two block body is set on respectively in the holder, and wherein a block body has the sliding end that protrudes holder.

2, floor spring according to claim 1 is characterized in that: this elastic component is a spring.

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