CN2724527Y - Transmission structure for folding bed - Google Patents

Abstract

The utility model discloses a transmission structure for folding bed, comprising a bed frame, and a spacing bed frame is fixed on the upper end of the bed frame; the two ends of the spacing bed frame are respectively pivoted with a front and a middle bed frames, and the end of the middle bed frame is pivoted with a rear bed frame; the bed frame is pivoted with a tilting front lever and a tilting rear lever on the lower parts of the front and the middle bed frames, and the tops of the front and the rear levers are provided with running wheels which are contacted with the bottoms of the front and middle bed frames; the bed frame is pivoted with an interlock element on the lower part of the spacing bed frame, and the both sides of the bed frame are respectively pivoted with a front and a rear connecting rods; the end of the rear connecting rod and the bottom of the rear lever are movably connected with each other. A driving device is arranged on the bed frame, and one end of the driving device is pivoted with the bottom of the front lever and the front connecting rod mutually. Through the adjustment of the driving device, the front and the rear connecting rods pivoted on the both sides of the interlock element can move in the reverse direction, the front and the rear levers are synchronously driven in the change of elevation angle, and the front and the middle bed frames which are contacted with the running wheels of the front and the rear levers are pushed in the tilt state.

Description

The drive mechanism of folding bed

Technical field

The utility model relates to mechanical, particularly a kind of drive mechanism of folding bed.

Background technology

At present, the structure of folding bed is generally the forward and backward bedstead group that is pivoted mutually and is provided with mattress, this front bedstead group is being provided with second bedstead near pivot part, and be pivoted at a end and first bedstead away from pivot part, the bottom of first bedstead is provided with crank, this crank can be pivoted with the carriage release lever of CD-ROM drive motor, and the 3rd bedstead position is on the back bedstead group; And an end is hubbed near pivot part, it is held in addition and is pivoted with the 4th bedstead, in being provided with the pivot seat near the 3rd bedstead bottom between two bedsteads, this pivot seat is connected with a connecting rod, the bedstead bottom is provided with hollow sleeve again, can be equipped with a drive rod in the sleeve, two ends of drive rod are connected with connecting rod and trace respectively, and trace is held in addition and the free end of carriage release lever is pivoted; Above-mentioned drive mechanism is contacted each body of rod, utilizes drive rod control to affect each body of rod to be the displacement of equidirectional front and back at last, reaches and can adjust the function that each bedstead is elevation angle inclination synchronously; It is the kenel for general folding bedstead, and the 4th bedstead bottom nothing that is attached at the 3rd bedstead that promptly is pivoted is provided with any linkage part, only can be attached on the 3rd bedstead to affect thereupon, and not have the design that independent adjustable angle changes, and need be improved.

The utility model content

According to the purpose of this utility model,, provide a kind of drive mechanism of folding bed at the shortcoming that above-mentioned transmission mechanism exists; The structure of folding bed mainly is included in the bed frame upper end and is installed with a spacing bedstead, and spacing bedstead one end is pivoted with a front bedstead, and end is pivoted and is connected with a bedstead and a back bedstead in one in addition; This drive mechanism comprises: be provided with a link driving element in the about midpoint of bed frame, the link driving element both sides respectively are pivoted with a front and rear connecting rods, and the relative outboard end of this front and rear connecting rods is articulated with a preceding lever and a back lever respectively; The top of this forward and backward lever is provided with movable wheel, pastes respectively and touches in bottom surface preceding, middle bedstead; One drive unit, one end is hubbed at the bed frame predetermined end, and end articulates mutually with preceding lever and front rod in addition;

By adjusting drive unit, can make the front and rear connecting rods that is hubbed on the link driving element both sides be reverse start, and then affect forward and backward lever to be elevation angle variation synchronously, pass inclined with preceding, the middle bedstead that subsides is touched on the activity wheel of forward and backward lever;

Another purpose of the present utility model is to provide a kind of folding bed drive mechanism, wherein, the bed frame position is pivoted with lever below back bedstead, the top of this lever is provided with movable wheel and pastes the bottom surface of touching in back bedstead, end is articulated with one or two section expansion link in addition, and this expansion link end in addition articulates mutually with lever bottom, back; Wherein, these two sections expansion links are provided with a lock member in the outer body of rod, can adjust the inside and outside body of rod and be fixed or movable state; In view of the above, this back bedstead can be different flexible states by adjusting expansion link, and makes the lever actuation that is hubbed at expansion link one end, reaches passing adjustment back bedstead and can be the heeling condition that angle changes.

Advantage of the present utility model is: novel structure, and can be different flexible states by adjusting expansion link, and make the lever actuation that is hubbed at expansion link one end, reach passing adjustment back bedstead and can be the heeling condition that angle changes.

Description of drawings:

Fig. 1 makes up cross-sectional schematic for the utility model embodiment;

Fig. 2 is the illustrative view of Fig. 1;

Fig. 3 analyses and observe signal for another embodiment combination of the utility model;

Fig. 4 is the illustrative view of Fig. 3.

The specific embodiment:

Shown in accompanying drawing 1 and accompanying drawing 2, its structure comprises:

One bed frame 10, upper end are installed with a spacing bedstead 11, and these spacing bedstead 11 1 ends are pivoted with a front bedstead 12, and end is pivoted with bedstead 13 in addition, and is pivoted with a back bedstead 14 in middle bedstead 13 ends;

One link driving element 20 is to be hubbed on the below that bed frame 10 is positioned at spacing bedstead 11, and it is pivoted with a front rod 21 and a back link 22 respectively near dish edge opposite end;

Lever 30 before one, it is an angle of inclination and is hubbed on the below that bed frame 10 is positioned at front bedstead 12, and its top is provided with movable wheel 31, is contacted with the bottom surface of front bedstead 12, and other holds screwed pipe 51 ends of pivot knot at drive unit 50;

One back lever 40, it is hubbed on 10 of bed frames and is a suitable angle of inclination below middle bedstead 13, and these back lever 40 tops are provided with movable wheel 41, the bottom surface of bedstead 13 in being contacted with, end articulates with back link 22 1 ends are movable in addition;

One drive unit 50 is hubbed on the front end of bed frame 10, and it comprises a screwed pipe 51, this screwed pipe front end provides and front rod 21 and the mutual pivot knot of preceding lever 30 1 ends, this screwed pipe 51 has screwed togather 52 turns of a screw rod 52, one motors 53 energy drive screws, to drive screwed pipe 51 front and back displacements;

Form by above-mentioned member, after starting drive unit 50, can adjust screwed pipe 51 displacement backward, and then lever 30 and front rod 21 is equidirectional with it moves before promoting, front rod 21 1 end pivots knot is on link driving element 20 again, make this link driving element 20 also be synchronous rotation, and affect back link 22 to move forward, in view of the above, adjusted back lever 40 starts that are hubbed on back link 22 ends; Wherein, when this forward and backward lever 30,40 begins starts, be adjusted into erectility gradually by heeling condition, at this moment, paste to touch and take turns preceding, the middle bedstead 12,13 of 31,41 wheel faces with being adjusted to elevation angle heeling condition gradually by level in the activity of forward and backward lever 30,40; Again, after 13 one-tenth heeling conditions of central bedstead, this back bedstead 14 also is enhanced synchronously with middle bedstead 13 pivot ends, makes it can do the adjustment that angle changes synchronously; Again, the utility model is pivoted with a lever 15 in bed frame 10 below back bedstead 14, these lever 15 tops are provided with movable wheel 151 subsides and touch in the bottom surface of back bedstead 14, the bottom pivot is tied an expansion link 152 and is articulated with lever 40 bottoms, back are movable, wherein, this expansion link 152 also can adopt the body of rod more than two sections to be socketed to form for the flexible body of rod of two-part, its outer body of rod is provided with a lock member 1521, can adjust two bodies of rod and be the fixing spacing state or the state that freely stretches; And this lock member 1521 can be a screw rod;

In view of the above, this back bedstead 14 can be the flexible states of difference by adjustment expansion link 152, and makes lever 15 starts that are hubbed at expansion link 152 1 ends, reaches and utilizes its movable wheel 151 to go to pass the heeling condition that adjustment back bedstead 14 can be the angle variation; Wherein, expansion link 152 also can be replaced with back link 22, and bedstead also has the function that can manually adjust its angle that rises in making.

Claims (5)

1, a kind of drive mechanism of folding bed comprises a bed frame, and the upper end is installed with a spacing bedstead, and these spacing bedstead two ends are pivoted with bedstead among a front bedstead and respectively, and are pivoted with a back bedstead in middle bedstead end; It is characterized in that: this bed frame position is pivoted with an inclined preceding lever and a back lever respectively below front bedstead and middle bedstead, this forward and backward lever top all is provided with movable wheel subsides and touches in bottom surface preceding, middle bedstead; The bed frame position is pivoted with a link driving element below spacing bedstead, the link driving element both sides are pivoted with a front and rear connecting rods respectively, and this back link end links with the bottom of back lever is movable mutually; One drive unit is located at bed frame, and one end and preceding lever bottom and front rod articulate mutually.

2, the drive mechanism of a kind of folding bed according to claim 1 is characterized in that: said drive unit comprises that a screwed pipe front end provides and front rod and the mutual pivot knot of preceding lever one end; One screw rod and screwed pipe screw togather mutually; The turn of one motor energy drive screw is to drive screwed pipe front and back displacement.

3, the drive mechanism of a kind of folding bed according to claim 1, it is characterized in that: said bed frame position is pivoted with a lever below back bedstead, this lever top is provided with movable wheel and pastes the bottom surface of touching in back bedstead, and the bottom pivot is tied an expansion link and articulated with lever bottom, back is movable.

4, the drive mechanism of a kind of folding bed according to claim 3 is characterized in that: said expansion link is provided with a lock member in the outer body of rod, can adjust two bodies of rod and be the fixing spacing state or the state that freely stretches.

5, the drive mechanism of a kind of folding bed according to claim 4 is characterized in that: said lock member can be a screw rod.

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