CN206933848U - A kind of mounting structure of electric bedstead electric pushrod - Google Patents

Abstract

It the utility model is related to a kind of mounting structure of electric bedstead electric pushrod, the jointed shaft being connected including electric pushrod and with bedstead, electric pushrod is provided with telescopic push rod, push rod has the connection end be hinged axis connection, also include flake bearing, the outer ring of flake bearing is fixedly connected with the connection end, and the inner ring of flake bearing is set on the jointed shaft.After the technical solution of the utility model, flake bearing is used between electric pushrod and jointed shaft, using in flake bearing, inner ring can be with respect to outer ring three dimensions rolls the characteristics of, the force direction between connection end and jointed shaft can be corrected automatically, ensure the vertical stress of jointed shaft, so as to ensure that the long-time of electric pushrod uses the stationarity lifted with electric bedstead.

Description

A kind of mounting structure of electric bedstead electric pushrod

Technical field

It the utility model is related to a kind of mounting structure of electric bedstead electric pushrod.

Background technology

Bed accessory is the apparatus of people's sleep rest, and people will spend 1/3rd times of life in the above, therefore Bed is highly important for people, if doss comfortableness is inadequate, will have a strong impact on the sleep quality of people.Traditional bed Tool is typically made up of bedstead, the head of a bed baffle plate located at the side end of bedstead one and the mattress above bedstead, its bed of this bed accessory Frame is only used for keeping flat mattress, it is impossible to drives body to do undulatory motion, without tune side height or regulation angle function, it is impossible to root According to user need adjust the gradient or gradient, it has not been convenient to lie on one's side, when people see TV, reading or sick rest in bed all It is inconvenient.

It is therefore, practical in the U of Authorization Notice No. CN 203860852, the China of entitled " a kind of beddo driving structure " In new patent, the polylith bed board that a kind of beddo driving structure includes bedstead, is hinged is disclosed, including at least turnable Head movement bed board and foot's mobile bed plate, and with scalable push rod head push-rod electric machine and foot's push-rod electric machine, The beddo driving structure also includes torque tube, and head push-rod electric machine and foot's push-rod electric machine are respectively articulated with torque tube and by stretching It is long or shorten push rod and drive torque tube to rotate, it is provided with roller on torque tube, roller is mobile to push away according to the rotation of torque tube Dynamic head movement bed board and foot's mobile bed plate rise or fall.When head push-rod electric machine or foot's push-rod electric machine shorten push rod When, roller promotes head mobile bed plate or foot's mobile bed plate to rise.When head push-rod electric machine or foot's push-rod electric machine elongation push away During bar, roller promotes head mobile bed plate or foot's mobile bed plate to decline.The beddo driving structure passes through head push-rod electric machine Elongation with the push rod of foot push-rod electric machine and the form and angle of bend for shrinking regulation beddo.

In above-mentioned beddo, the end of the push rod in push-rod electric machine (i.e. electric pushrod) is general directly to cut with scissors with part to be driven Connect, jointed shaft is specifically set on part to be driven, axis hole, the axis and push rod of axis hole are offered on the push rod of electric pushrod Axis be vertically arranged, jointed shaft, which is located in axis hole, links together part to be driven with push rod.This push-rod electric machine Mounting structure, machining accuracy is higher, when having machining deviation or having larger use abrasion, the axis of jointed shaft and push rod Axis is not located in when being mutually perpendicular to state, and when now promoting jointed shaft by push-rod electric machine, the direction that electric pushrod is subject to is made Direction and the axial direction of push rod firmly is not parallel, can have impact on the normal service life of push rod or so that be difficult to driving part Steadily rise along predetermined direction.

In consideration of it, the present inventor carries out in-depth study to above mentioned problem, there is this case generation then.

Utility model content

The purpose of this utility model, which is to provide one kind, can lift electric bedstead lifting stationarity, improve electric pushrod and make With the mounting structure of the electric bedstead electric pushrod in life-span.

In order to achieve the above object, technical scheme as the utility model use：

A kind of mounting structure of electric bedstead electric pushrod, including electric pushrod and the jointed shaft that is connected with bedstead, it is electronic Push rod is provided with telescopic push rod, and push rod has the connection end be hinged axis connection, in addition to flake bearing, flake bearing Outer ring is fixedly connected with the connection end, and the inner ring of flake bearing is set on the jointed shaft.

As a kind of preferred embodiment of the present utility model, the outer ring is provided with screw rod, on the connection end be provided with The screwed hole that screw rod coordinates, the outer ring is connected to the connection end by screw rod.

As a kind of preferred embodiment of the present utility model, in addition to limited block and limited block is pressed on into the connection The nut at end, limited block are provided with the spacing hole passed through for the screw rod, and nut engagement sleeves are through in the screw rod, and nut is located at Between the outer ring and the limited block.

As a kind of preferred embodiment of the present utility model, the limited block is provided with the first limiting section and the second limiting section, First limiting section and the second limit part are located at the both sides of the limited block, and the connection end is arranged on the first limiting section and second Between limiting section.

As a kind of preferred embodiment of the present utility model, one end of the screw rod is and the outer ring is integrally formed is connected End, the other end is free end, and turning portion is formed on the screw rod, and turning portion extends from free end to cohesive end, the screw rod Section circumferentially is in major arc arch, and the spacing hole is major arc arcuate apertures corresponding with the screw rod.

As a kind of preferred embodiment of the present utility model, the electric pushrod includes motor and push rod casing, push rod Worm gear and worm screw are provided with casing, worm gear is connected with screw mandrel, motor and worm-drive on worm screw on worm gear Connection, is equipped with feed screw nut, feed screw nut is fixedly connected with the push rod on screw mandrel.

After the technical solution of the utility model, flake bearing is used between electric pushrod and jointed shaft, utilizes fish During axis oculi is held, inner ring can automatically correct connection end and jointed shaft it with respect to outer ring three dimensions rolls the characteristics of Between force direction, ensure the vertical stress of jointed shaft, so as to ensure that the long-time of electric pushrod uses and electric bedstead lifts Stationarity.

Brief description of the drawings

Fig. 1 is the structural representation of electric bedstead in the utility model；

Fig. 2 is the structural representation of another angle of electric bedstead in the utility model；

Fig. 3 is the structural representation of the another angle of electric bedstead in the utility model；

Fig. 4 is the utility model medium-height trestle mobile guide structural representation；

Fig. 5 is the decomposition texture schematic diagram of the utility model medium-height trestle mobile guide structure；

Fig. 6 is the structural representation of flake bearing fit limited block in the utility model；

Fig. 7 is the decomposition texture schematic diagram of flake bearing and limited block in the utility model；

Fig. 8 is electric pushrod, flake bearing and limited block fit structure schematic diagram in the utility model；

In figure：

10- support underframe 20- first supports

21- the first centering block the second centering blocks of 22-

The centering blocks of the 3rd centering block 24- of 23- the 4th

25- the first trace the second traces of 26-

The first electric pushrods of trace 28- of 27- the 3rd

Spacing the second spacing beams of beam 292- of 291- first

211- first support bar 221- second support bars

The support bars of the 3rd support bar 241- of 231- the 4th

30- second supports the first guide wheels of 301-

302- the second guide wheel 303- loose slots

304- the second wheel shaft the first stringer boards of 305-

306- the second stringer board 307- transverse slats

308- adjusting bolt 309- adjusting nuts

310- springs the first axis holes of 311-

312- the second axis hole the first wheel shafts of 313-

40- side arms 41- is intubated

42- inserted links the second electric pushrods of 43-

The electric pushrods of frame 51- the 3rd in 50-

The first push pedals of 52- 53- first argues for the sake of arguing

54- second argues for the sake of arguing 55- first rotating shafts

56- hinged block 57- first rotating shafts

60- tailstocks the first tailstocks of 61-

The electric pushrods of 62- tailstocks 621- the 5th

622- installing plate 623- swing rods

The electric pushrods of 63- hoisting frames 64- the 4th

65- bracket 70- electric pushrods

80- outer rings 81- inner rings

82- mounting hole 83- screw rods

831- turning portion 84- nuts

85- limiting sections the first limiting sections of 851-

86- the second limiting section 853- spacing holes

Embodiment

In order to which the technical solution of the utility model is explained further, the direction for corresponding to the head of a bed using electric bedstead corresponds to before After the direction of tailstock is, it is described in detail below in conjunction with the accompanying drawings.

Referring to figs. 1 to Fig. 8, a kind of electric bedstead, including support underframe 10, be liftably arranged on support underframe 10 First support 20, the second support 30 that can be moved horizontally relative to first support 20, driving second support 30 to move horizontally Horizontal drive mechanism, side arm 40, middle frame 50, after-frame 60, to drive the first lifting mechanism that side arm 40 lifts, driving The second lifting mechanism that middle frame 50 lifts and to drive the 3rd lifting mechanism that tailstock 60 lifts, second support 30 is slidably Ground is arranged in first support 20, and side arm 40 and tailstock 60 correspond to the head of a bed and tailstock setting respectively, and middle frame 50 is arranged on side arm 40 Between after-frame 50, side arm 40, middle frame 50 and tailstock 60 are arranged in second support 30.Support underframe 10 and second support 30 be substantially in frame-type structure, and first support 20 is in substantially " door " font structure, and in embodiment, second support 30 is arranged on first In support 20.

As a kind of preferred embodiment of the present utility model, the first support 20 is connected to the support by elevating mechanism On chassis 10, it is electronic that elevating mechanism includes the first centering block 21, the second centering block 22, the 3rd centering block 23, the 4th centering block 24 and first Push rod 28, the first centering block 21, the second centering block 22 and the 4th centering block 24 are generally triangular, the first centering block 21 and the second centering block 22 Set up separately and set up separately in the both sides of the front end of the first support 20, the 3rd centering block 23 and the 4th centering block 24 in the first support 20 The both sides of rear end, the front portion of the first centering block 21 are hinged on the support underframe 10, the rear portion of the first centering block 21 and described first The lower end of support 20 is abutted, and the middle and upper part of the first centering block 21 and one end of the first electric pushrod 28 are hinged, the first electric pushrod 28 The other end be hinged on the support underframe 10, the first electric pushrod 28 is substantially set in horizontal direction.Second centering block 22 The anterior front portion with the first centering block 21 is connected by the first trace 25, rear portion and the first support of the second centering block 22 20 lower end is abutted, and the middle and upper part of the second centering block 22 is connected with the middle and upper part of the 4th centering block 24 by the second trace 26, The anterior and first support 20 of 4th centering block 24 is be hinged, and the rear portion of the 4th centering block 24 and the lower end of the first support 20 are supported Connect, the anterior and first support 20 of the 3rd centering block 23 is be hinged, under the rear portion of the 3rd centering block 23 and the first support 20 End abuts, and is connected between the 3rd centering block 23 and the 4th centering block 24 by the 3rd trace 27.

As a kind of preferred embodiment of the present utility model, the both ends of first trace 25 are hinged on described first On frame 20, first trace 25 is horizontally disposed, and the front portion of first centering block 21 is fixed on described first and interlocked On bar 25, the front portion of second centering block 22 is fixed on first trace 25, the first trace 25 rotatably arranged with In first support 20.First centering block 21 is provided with first support bar 211, and the second centering block 22 is provided with second support bar 221, the 3rd centering block 23 is provided with the 3rd support bar 231, and the 4th centering block 24 is provided with the 4th support bar 241, first support bar 211st, second support bar 221, the 3rd support bar 231 and the 4th support bar 241 are corresponding is connected under the first support 20 End, first support bar 211, second support bar 221, the 3rd support bar 231 and the 4th support bar 241 are horizontally disposed And it is located at same level.The lower end of the first support 20 is provided with the first spacing 291 and second spacing beam 292 of beam, the first limit Position beam 291 is correspondingly arranged at the rear end of the first support bar 211 and the second support bar 221, the second spacing correspondence of beam 292 It is arranged on the rear end of the 3rd support bar 231 and the 4th support bar 241, the first spacing 291 and second spacing beam 292 of beam It is arranged in parallel.

As a kind of preferred embodiment of the present utility model, the first support bar 211 and the second support bar 221 are coaxial Set, the 3rd support bar 231 and the 4th support bar 241 are coaxially disposed.

Using above-mentioned elevating mechanism, the first centering block 21 is driven around the front portion of the first centering block by the first electric pushrod 28 Rotate, so as to realize the lifting at the rear portion of the first centering block 21, pass through the first trace 23, the second trace 26 and the 3rd trace 27 realize the synchronous hunting of the first centering block 21, the second centering block 22, the 3rd centering block 23 and the 4th centering block 24 so that first support bar 211st, second support bar 221, the 3rd support bar 231 and the synchronization lifting of the 4th support bar 241, so as to realize whole first support 20 steady lifting, its integral elevating harmony is more excellent, swings more steady.

As a kind of preferred embodiment of the present utility model, one end of the side arm 40 is hinged in the second support 30, The other end is free end, and the rear end of specifically side arm 40 is hinged in second support 30, and front end is free end.First lifting Mechanism includes intubation 41 and the inserted links 42 coordinated with intubation 41, is intubated 41 lower end and is hinged in the first support 20, inserted link 42 upper end is hinged on the middle part of the side arm 40, and the lower end activity of inserted link 42 is plugged in intubation 41 and edge can be intubated 41 axially Mobile, the lower end for being intubated 41 be located at the lower section of side arm 40, and in embodiment, inserted link 42 is two, the top of two inserted links 42 it Between linked together by spacing crossbeam, by spacing crossbeam limit inserted link 42 further move downward, so as to realize side arm 40 Positioning.The horizontal drive mechanism is the second electric pushrod 43 being connected in the first support 20, the second electric pushrod 43 push rod is connected to the second support 30.Using this structure, drive second support 30 horizontal by horizontal drive mechanism It is mobile, so as to drive inserted link 42 to be moved in intubation 41 by side arm 40, so that side arm 40 is swung around rear end, before realization The lifting or decline of frame 40.Using this structure, the lifting of side arm 40, the second electricity are driven using the movement of second support 30 While dynamic push rod 43 realizes that second support 30 drives, it is possible to achieve the lifting of side arm 40.

As a kind of preferred embodiment of the present utility model, second lifting mechanism includes being connected to the second support 30 On the 3rd electric pushrod 51, the first rotating shaft 57 being arranged in second support 30, first pushing away of being fixed in first rotating shaft 57 Plate 52, first be connected in first rotating shaft 57 argue for the sake of arguing 53, is hinged on first argue for the sake of arguing on 53 second argue for the sake of arguing and 54 and be arranged on The second rotating shaft 55 on the middle frame 50, the second rotating shaft 55 are arranged on the postmedian of middle frame 50, and the second rotating shaft 55 passes through hinged block 56 is be hinged with the middle frame 50, and second 54 one end of arguing for the sake of arguing is argued for the sake of arguing with first and 53 is hinged, and the other end abuts with the second rotating shaft 55, the One argues for the sake of arguing 53 and second to argue for the sake of arguing 54 be substantially in " V " type, and the first push pedal 52 is inclined upwardly setting, the lower end and first of the first push pedal 52 Rotating shaft 57 is fixedly connected, and the push rod of the 3rd electric pushrod 51 and the upper end of the first push pedal 52 are hinged, one end of the middle frame 50 with The second support 30 is be hinged, and the other end is be hinged with the tailstock 60.Using this structure, promoted by the 3rd electric pushrod 51 First push pedal 52, the first push pedal 52 drive first rotating shaft 57 to rotate, and first rotating shaft 57 drives first to argue for the sake of arguing 53 swings, and first argues for the sake of arguing 53 by second argue for the sake of arguing 54 and first rotating shaft 55 drive it is whole in frame 50 swung around front end, so as to the lifting of frame 50 in realizing and Decline.

As a kind of preferred embodiment of the present utility model, the 3rd lifting mechanism is to be connected in the second support 30 The 4th electric pushrod 64, the push rod of the 4th electric pushrod 64 and the tailstock 60 are be hinged, one end of the tailstock 60 with it is described Middle frame 50 is be hinged, and the other end is the end that freely swings.Specifically, hoisting frame 63, tailstock 60 are connected with the 4th electric pushrod 64 It is erected on hoisting frame 63, drives hoisting frame 63 to move up and down by the 4th electric pushrod 64, so as to drive tailstock 60 around preceding End is swung, and realizes the lifting or decline of tailstock 60.

As a kind of preferred embodiment of the present utility model, the tailstock 60 includes hinged the first tailstock 61 and the Two tailstocks 62, the first tailstock 61 and the middle frame 50 are be hinged, in addition to the 5th electric pushrod 621, the 5th electric pushrod 621 connect On the second tailstock 62, the push rod of the 5th electric pushrod 621 is connected on the first tailstock 61.Specifically, in addition to the He of bracket 65 Swing rod 623, the front end of swing rod 623 and the rear portion of the second tailstock 62 are hinged, and the front end and the middle part of bracket 65 of swing rod 623 are hinged, 5th electric pushrod 621 is hinged on bracket 65 by installing plate 622, its pin joint be located at swing rod 623 front and rear end it Between, bracket 65 is erected on hoisting frame 63.Using this structure, the He of the first tailstock 61 can be driven by the 4th electric pushrod 64 Second tailstock 62 is lifted simultaneously, and the second tailstock 62 can also can be driven to be swung around front end by the 5th electric pushrod 621, real The independent swing of existing second tailstock 65, realizes the independent lifting of the second tailstock 62.

The utility model also proposes a kind of support mobile guide structure of electric bedstead, is provided with and leads in first support 20 Groove, fore-and-aft direction of the guide groove along electric bedstead are set, and guide groove includes upper guide groove 201 and lower guide channel 202, in the second support 30 Multiple first guide wheels 301 are provided with, the first guide wheel 301 is rollably disposed in lower guide channel 202, and the first guide wheel 301 sets up separately The both sides of first support 20.This also includes rollably being arranged on the second roller 302 in upper guide groove 201, the second roller 302 with Mode moving up and down is connected in the second support 30, is provided with the second support 30 to cause the second roller 302 are pressed on the elastic mechanism of upper guide groove 201.Elastic mechanism include be arranged in the second support 30 loose slot 303, wear The second wheel shaft 304 for being located in loose slot 303, the portal frame being connected on the second wheel shaft 304, the adjustment being connected on portal frame Screw rod 308, the adjusting nut 309 being disposed in adjusting bolt 308 and the top pressure spring 310 being set in adjusting bolt 309, Loose slot 303 is horizontally disposed, and loose slot 303 is more than the diameter of the second wheel shaft 304, the second wheel in the aperture of short transverse Axle 304 is horizontally set in a manner of movable up and down in loose slot 303, and the second roller 302 is arranged on the second wheel shaft 304, The upper end of spring 310 is supported to be supported in the second support 30 in the lower end of adjusting nut 309, the lower end of spring 310.

As a kind of preferred embodiment of the present utility model, the portal frame include the first stringer board 305, the second stringer board 306 with And the transverse slat 307 between the first stringer board 305 and the second stringer board 306 is arranged on, the first stringer board 305, the second stringer board 306 and transverse slat 307 are integrally formed.The adjusting bolt 308 is vertically screwed onto on transverse slat 307, and the first stringer board 305 and second is vertical Plate 306 is be arranged in parallel, and the first axis hole 311 is offered on the first stringer board 305, and the second axis hole is offered on the second stringer board 306 312, the first axis hole 311 and the second axis hole 312 are horizontally disposed, and the first stringer board 305 and the second stringer board 306 pass through first axle 312 sets of 311 and second axis hole of hole is through on second wheel shaft 304.Using this structure, by adjusting adjusting nut 309 Position, the tensioning dynamics of spring 310 can be adjusted, so as to apply upward effect to portal frame so that the second guide wheel 302 is held out against On upper guide groove 201, using this structure, the first guide wheel 301 is supported in lower guide channel 202 under the pressure of second support 30, the Two guide wheels 301 are pressed in upper guide groove 201 under elastic mechanism effect, so as to limit second support play about 30, are ensured electric The even running of dynamic bedstead.

As a kind of preferred embodiment of the present utility model, the second support 30 is provided with the first wheel shaft 313, and described first Guide wheel 301 is installed in rotation on the first wheel shaft 313, and first wheel shaft 313 and second wheel shaft 304 are along level side To setting.As a kind of preferred embodiment of the present utility model, into " C " type, the guide groove is two for the longitudinal section of the guide groove, point The both sides of the first support 20 are located at, two first guide wheels 301 and one described the are combined with each guide groove Two guide wheels 302, second guide wheel 302 are arranged between two first guide wheels 301.Using this structure, can ensure First guide wheel 301 and the second smooth sliding in guide groove of guide wheel 302, the first guide wheel 301 and the second guide wheel 302 are not easy to slip.

Reference picture 6 to Fig. 8, the utility model also to the mounting structure of electric bedstead electric pushrod, the utility model is related to The first electric pushrod, the second electric pushrod, the 3rd electric pushrod, the 4th electric pushrod and the 5th electric pushrod can adopt With the mounting structure, the mounting structure is illustrated by taking the first electric pushrod as an example, electric pushrod 70 is provided with telescopic push rod 71, horizontally disposed jointed shaft is provided with the support underframe 10, push rod 71 has the connection end be hinged axis connection, also wrapped Flake bearing is included, the outer ring 80 of flake bearing is fixedly connected with the connection end, and the inner ring 81 of flake bearing is set in the hinge In spindle, the outer ring 80 is provided with screw rod 831, and screw rod 831 is integrally formed with outer ring.It is provided with the connection end and screw rod 831 screwed holes (being blocked in figure, be not shown) coordinated, the outer ring 80 is connected to the connection end by screw rod 831.This reality Flake bearing is used between electric pushrod and jointed shaft with new, using in flake bearing, inner ring can be with respect to outer ring three The characteristics of dimension space rolls, the force direction between connection end and jointed shaft can be corrected automatically, ensure that jointed shaft is vertical Stress, so as to ensure that the long-time of electric pushrod uses the stationarity lifted with electric bedstead.The flake that the utility model is related to Bearing can be directly from buying on the market.

The utility model also includes limited block 85 and limited block 85 to be pressed on to the nut 84 of the connection end, spacing Block 85 is provided with the spacing hole 853 passed through for the screw rod 83, and the engagement sleeves of nut 84 are through in the screw rod 83, and nut 84 is located at Between the outer ring 80 and the limited block 85, the limited block 85 is provided with the first limiting section 851 and the second limiting section 852, First limiting section 851 and the second limiting section 852 set up separately is arranged on first in the both sides of the limited block 85, the connection end of push rod 71 Between the limiting section 852 of limiting section 851 and second, one end of the screw rod 83 be with the 80 integrally formed cohesive end of outer ring, The other end is free end, turning portion 831 is formed on the screw rod, turning portion 831 extends from free end to cohesive end, the spiral shell The section of bar 83 circumferentially is in major arc arch, and the spacing hole 853 is major arc arcuate apertures corresponding with the screw rod 83.This practicality The new structure by carrying out turnery processing to screw rod 83 and dexterously selecting spacing hole, the aperture of major arc arcuate apertures is slightly larger than spiral shell The external diameter of the corresponding site of bar 83 so that limited block 85 can move axially along screw rod 83, and can not be 83 turns around screw rod It is dynamic, pass through position of the adjusting nut 84 on screw rod 83 so that limited block 85 is pressed on the connection end of push rod 71, limits push rod 71 rotate relative to screw rod 83, so as to electric pushrod stable drive.

In the utility model, electric pushrod can be directly from buying on the market, and electric pushrod mainly includes motor With push rod casing, push rod casing is interior to be provided with worm gear and worm screw, and worm gear is connected with screw mandrel on worm screw on worm gear, drive Dynamic motor is connected with worm-drive, feed screw nut is equipped with screw mandrel, feed screw nut is fixedly connected with the push rod, will drive The rectilinear movement for changing into push rod of motor.

The utility model also proposes a kind of beddo, including bedstead and the mattress being arranged on bedstead, and it includes the bed Frame uses above-mentioned electric bedstead, and mattress can be directly placed on electric bedstead, typically enter one by fastener (such as tether) Step is fixed.

Product form of the present utility model is not limited to this case diagram and embodiment, and anyone carries out similar thinking to it Appropriate change or modification, all should be regarded as not departing from patent category of the present utility model.

Claims (6)

1. a kind of mounting structure of electric bedstead electric pushrod, including electric pushrod and the jointed shaft that is connected with bedstead, it is electronic to push away Bar is provided with telescopic push rod, and push rod has the connection end be hinged axis connection, it is characterised in that：Also include flake bearing, The outer ring of flake bearing is fixedly connected with the connection end, and the inner ring of flake bearing is set on the jointed shaft.

A kind of 2. mounting structure of electric bedstead electric pushrod as claimed in claim 1, it is characterised in that：Set on the outer ring There is screw rod, the screwed hole coordinated with screw rod is provided with the connection end, the outer ring is connected to the connection end by screw rod.

A kind of 3. mounting structure of electric bedstead electric pushrod as claimed in claim 2, it is characterised in that：Also include limited block With limited block to be pressed on to the nut of the connection end, limited block is provided with the spacing hole passed through for the screw rod, nut Engagement sleeves are through in the screw rod, and nut is between the outer ring and the limited block.

A kind of 4. mounting structure of electric bedstead electric pushrod as claimed in claim 3, it is characterised in that：On the limited block Provided with the first limiting section and the second limiting section, the first limiting section and the second limit part are located at the both sides of the limited block, described Connection end is arranged between the first limiting section and the second limiting section.

A kind of 5. mounting structure of electric bedstead electric pushrod as claimed in claim 4, it is characterised in that：The one of the screw rod Hold to be free end with the integrally formed cohesive end in the outer ring, the other end, form turning portion on the screw rod, turning portion from Free end extends to cohesive end, and the section of the screw rod circumferentially is in major arc arch, and the spacing hole is corresponding with the screw rod Major arc arcuate apertures.

A kind of 6. mounting structure of electric bedstead electric pushrod as described in any one of claim 1 to 5, it is characterised in that：Institute Stating electric pushrod includes motor and push rod casing, is provided with worm gear and worm screw in push rod casing, worm gear is on worm screw, snail Screw mandrel is connected with wheel, motor is connected with worm-drive, and feed screw nut, feed screw nut and institute are equipped with screw mandrel Push rod is stated to be fixedly connected.