CN205339341U - Synchronous push -and -pull device of unit drive double pendulum pole - Google Patents
Synchronous push -and -pull device of unit drive double pendulum pole Download PDFInfo
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- CN205339341U CN205339341U CN201521060279.9U CN201521060279U CN205339341U CN 205339341 U CN205339341 U CN 205339341U CN 201521060279 U CN201521060279 U CN 201521060279U CN 205339341 U CN205339341 U CN 205339341U
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Abstract
The utility model provides a synchronous push -and -pull device of unit drive double pendulum pole, includes first universal joint pole, second universal joint pole and universal bearing ball, rotate the first universal joint pole that links together and second universal joint pole by the suit in universal bearing ball's universal joint pole bears the weight of the through -hole, make first pivot coincident with the centre of sphere of universal bearing ball's slip outer wall with the intersect of second pivot. The utility model discloses the axis that makes the push -and -pull thimble assembly can change along with the moment of the change in -process of variable equipment with the focus displacement and the swing of adaptability changes, keeps the whole moment balance of variable equipment and focus removal steadily. Additionally, the utility model discloses still move the switch through feedback sleeve pipe, pressure and feed back convex structure and avoid the unfavorable push -and -pull condition of prior art to appear.
Description
Technical field
This utility model relates to electric power drive mechanism, particularly relates to make this equipment change the driven by power push-pull device at fixed of duty or configuration state by device in push-pull device.
Background technology
Prior art designs and manufactures the variable apparatus that can convert duty or configuration, such as hard to bear driven by power automatically can be transformed into the automatic wheelchair bed of bed from wheelchair, the hard to bear driven by power of energy is automatically from the auto-folder dining table being transformed into for four people's dining tables for six people or eight people's dining tables, the hard to bear driven by power of energy is transformed into the multi-functional automatic desk of bed automatically from desk, it is possible to automatically become the sofa with movable part bed etc. of bed from sofa by driven by power.Above-mentioned variable apparatus be often required for a set of stable, durable, the electrical energy drive push-pull device at fixed of heavy load can be born, the first displacement thing being respectively fixedly connected with in described variable apparatus of this electrical energy drive push-pull device at fixed and the second displacement thing, order about, by push-and-pull first, second displacement thing, the corresponding displacement of parts connecting them and be progressively for conversion into desired morphology.Owing to the impetus of single pole push-and-pull is few, being unfavorable for trimming moment, in order to ensure operating steadily, prior art adopts electrical energy drive double-rod push-pull device at fixed mostly.
But the axis of the push-pull bar of prior art electrical energy drive double-rod push-pull device at fixed adopts fixed axis to arrange, and namely the axis of two push-pull bars immobilizes in push-and-pull process, and push-and-pull direction is constant.For the variable apparatus that structure and change procedure are complex, along with the change of equalising torque point and displacement of center of gravity change in change procedure, balance to maintain variable apparatus holding torque balance and gravity motion in change procedure and be unlikely and make variable apparatus topple or adapt to the various running environment being not datum level with horizontal plane, it is accomplished by finding out in variable apparatus for this fixed axis electrical energy drive push-pull bar device fixedly mounting position accurately, makes the structural design of variable apparatus take time and effort.Even if so still there is a strong possibility, property is to find accurate installation site to guarantee equalising torque and gravity motion balance at all.Therefore, push-pull bar axis is fixed to manufacturing and designing of variable apparatus and causes bottleneck.
It addition, prior art electrical energy drive push-pull device at fixed existing defects and weak point, cause that can not be prevented effectively from following unfavorable push-and-pull situation occurs:
1. in automatic push-pull process, prior art electrical energy drive push-pull device at fixed can not the ruuning situation of the perception each displacement device of whole variable apparatus, once occur operation to be obstructed situation because each displacement device runs inharmonious, electrical energy drive push-pull device at fixed still may proceed to forced service, cause displacement device impaired, the irreversible damage of whole equipment, even jeopardizes the accident of personal safety；
2. prior art cannot detect the synchronous situation of electrical energy drive double-rod push-pull device at fixed, cannot continuing to elongate or shorten even if side push-pull bar breaks down, the push-pull bar that opposite side does not break down can keep properly functioning, will cause that moment is unbalance, device damage, even jeopardizes the accident of personal safety；
3. the extreme position of electrical energy drive push-pull device at fixed cannot accurately be detected by prior art, prior art judges the extreme position of push-pull device at fixed often through detecting stroke, as elongation is extremely the longest or foreshortens to the shortest, but due to the abrasion between device and the mechanical movement deviation that is difficult to avoid that, use through one end time, push-pull device at fixed reach capacity position stroke it may happen that change, deviation is arisen that by detecting the extreme position of the push-pull device at fixed that stroke is judged, cause equipment can not to be sufficiently spread out or pack up completely, intended reconfiguration state can not be reached, the equipment that affects normally uses.
Utility model content
The technical problems to be solved in the utility model is in that to avoid the deficiencies in the prior art part and proposes the motor that push-pull bar arbitrarily can swing while flexible and drive double swing-bar push-pull device at fixed, and this device can also avoid the unfavorable push-and-pull situation of prior art.
This utility model solves described technical problem can by realizing by the following technical solutions:
Design, manufacture unit drive double swing-bar to synchronize push-pull device at fixed, form shift reciprocately for making this unit of installation drive between the first displacement thing and the second displacement thing in the equipment of double swing-bar synchronization push-pull device at fixed.Described unit drives double swing-bar to synchronize push-pull device at fixed to include drive motor, two push-and-pull sleeve pipe groups, respectively the configuration of each push-and-pull sleeve pipe group, two groups of transmission components drive motor is exported torque being converted to linearly shift reciprocately moment.Described push-and-pull sleeve pipe group includes at least two sleeve pipes that coaxial sleeve stacks；Wherein a sleeve pipe connects as passive sleeve pipe and the first displacement thing.And wherein another root sleeve pipe connects as active sleeve pipe and the second displacement thing, this active sleeve pipe is also connected with the shift reciprocately moment outfan of transmission component and is driven other sleeve pipe relatively to do axial displacement, so that push-and-pull sleeve pipe group is pushed out elongation vertically or is pulled shortening, and then between the first displacement thing and the second displacement thing, form shift reciprocately.Especially, described unit drives double swing-bar synchronization push-pull device at fixed also to include two transmission shells of respectively transmission component configuration.This transmission enclosure includes the universal rotational bearing cavity with sphere inwall.Described drive motor arranges the torque output shaft stretched out respectively along same straight line to both sides, and on this torque output shaft, processing has external screw thread.Described transmission component includes the flat column torque input gear arranging engaging tooth on its face of cylinder, first universal pole of column, the second universal pole of column, universal load-supporting ball, process threaded column screw mandrel, and be arranged in actively sleeve pipe, process threaded screw rod bushing.The end of described first universal pole is provided with its axis and is perpendicular to the first rotating shaft of this first universal joint rod axis, and the head end of described second universal pole is provided with its axis and is perpendicular to the second rotating shaft of this second universal joint rod axis；First rotating shaft is mutual with the second rotating shaft rotating to be connected, and makes that the axis of the first rotating shaft is orthogonal with the axis of the second rotating shaft to intersect, so that the first universal pole and the second universal pole can relatively rotate with mutually perpendicular two degree of freedom.Described universal load-supporting ball has sphere slip outer wall, arranges the universal pole carrying through hole with cylinder inwall in it；The the first universal pole being rotatably connected and the second universal pole are sleeved in the universal pole carrying through hole of universal load-supporting ball, make the first rotating shaft overlap with the centre of sphere of the slip outer wall of universal load-supporting ball with the cross point of the second rotating shaft；Universal load-supporting ball is rotatably mounted around in the universal rotational bearing cavity of transmission shell.Described torque input gear engagement torque output shaft；Described first universal pole head end is fixedly and coaxially connected the rotating shaft of torque input gear；The end of the second universal pole is fixedly and coaxially connected the head end of screw mandrel；The passive casing pipe sleeve of described push-and-pull sleeve pipe group is contained in outside screw mandrel, and described screw mandrel engages with screw rod bushing so that the torque transfer of screw mandrel is screw rod bushing along screw axis to shift reciprocately moment；Make push-and-pull sleeve pipe group can not only extend or shorten by the first universal pole, the second universal pole and universal load-supporting ball, additionally it is possible to the slip outer wall centre of sphere around universal load-supporting ball swings.
For limiting the slewing area of universal joint bearing ball, the slip outer wall of described universal load-supporting ball is additionally provided with along same axis respectively to the two fixing axles in location stretched out outside slip outer wall.The axis of the two fixing axles in location is perpendicular to the universal pole carrying through-hole wall axis of universal load-supporting ball, and crosses the centre of sphere of slip outer wall.On the inwall of the universal rotational bearing cavity of described transmission shell, processing has the two location depressions along same axis, and the axis of two location depressions is perpendicular to the shaft axis of torque input gear, and crosses the centre of sphere of the inwall of universal rotational bearing cavity.When universal load-supporting ball is rotatably mounted around in the universal rotational bearing cavity of transmission shell, the fixing axle in location of two universal load-supporting balls is respectively protruding in the location depression in each self-corresponding universal rotational bearing cavity.
Specifically, described unit drives double swing-bar synchronization push-pull device at fixed also to include motor housing.This motor housing includes the tubulose casing of encapsulation drive motor main body and encapsulates the end cap of casing two mouth of pipe respectively, and the torque output shaft of drive motor stretches out motor housing from the end cap of respective side respectively.Described transmission shell also includes torque input bearing cavity.Described universal load-supporting ball is additionally provided with the telescopic joint pipe stretched out and formed by universal pole carrying through hole end aperture.Described transmission shell connects the end cap of motor housing, and the torque output shaft meshed together and torque input gear are sleeved in torque input bearing cavity.The telescopic joint pipe connecting universal load-supporting ball fixed by described passive sleeve pipe by connector.The two end cap of described motor housing is respectively arranged with respective connection support, makes motor housing fixing connection the first displacement thing by this connection support, and then also realize passively telescopic joint first displacement thing.
For avoiding unfavorable push-and-pull situation to occur, described unit drives double swing-bar synchronization push-pull device at fixed also to include being connected to feedback sleeve pipe the second displacement thing, respectively each push-and-pull sleeve pipe group configuration；At least one pressing switch of the control circuit of electrical connection drive motor it is installed with in feedback sleeve pipe.The outer tube surface of described active sleeve pipe is fixedly installed its diameter and feeds back boss more than the cylinder of active sleeve outer.Described feedback casing pipe sleeve is contained in outside the feedback boss on active sleeve pipe, the diameter of feedback boss and pressing switch installation site in feedback sleeve pipe meet, when feeding back boss and moving to pressing switch, the button of pressing switch is fed back boss pressing and makes the on off state of pressing switch be in Guan Bi conducting state；When feeding back boss and moving away pressing switch, the button of pressing switch is not made the on off state of pressing switch be in disconnection off state by feedback boss pressing；Thus when axially opposing displacement occurs active sleeve pipe relative feedback sleeve pipe, the feedback boss that the on off state of each pressing switch can be moved changes, and then the control circuit of drive motor changes, according to the on off state of each pressing switch, the running status changing drive motor.
Further, this utility model is installed with the first pressing switch and the second pressing switch in feedback sleeve pipe.The position relationship with feedback boss of installing of two pressing switch meets, when feeding back sleeve pipe and actively relative displacement not occurring between sleeve pipe, the button of the first pressing switch is fed back boss pressing and makes the on off state of this first pressing switch be in Guan Bi conducting state, and the button of the second pressing switch is not made the second pressing switch state be in disconnection off state by feedback boss pressing；Thus when axially opposing displacement occurs active sleeve pipe relative feedback sleeve pipe, the feedback boss that the Switch State Combination in Power Systems of two pressing switch can be moved changes, and then the control circuit of drive motor changes, according to the Switch State Combination in Power Systems of each pair of pressing switch, the running status changing drive motor.
For cushion impact forces, in described feedback sleeve pipe, it is fixedly installed buffer spring respectively in feedback boss both sides vertically.When feeding back sleeve pipe with actively sleeve pipe generation relative displacement, it is possible to cause two buffer spring generation elastic deformations, with buffered feedback sleeve pipe and actively sleeve pipe relative displacement.
Specifically, described unit drives double swing-bar synchronization push-pull device at fixed also to include the fixing cover of actively sleeve pipe；This active sleeve pipe is fixed and is provided with the sleeve pipe bearing cavity with sphere inwall in cover；The first and end of sleeve pipe bearing cavity is provided with coaxial sleeve through hole.Buffer spring it is fixedly installed respectively in feedback boss both sides vertically.The outer tube wall of described feedback sleeve pipe is processed into dome shape；The inwall of feedback sleeve pipe is provided with the annulus column Internal baffle that two panels is coaxial with feedback sleeve pipe；At feedback sleeve pipe two ends, the mouth of pipe is respectively arranged with its internal diameter annulus column outer baffle less than feedback sleeve pipe spout diameter.When feeding back casing pipe sleeve and being contained on active sleeve pipe, making feedback boss between two Internal baffles, two buffer springs are clipped between Internal baffle and the outer baffle of feedback boss side, respective place respectively.Described two buffer springs connect actively sleeve pipe so that when feeding back sleeve pipe with actively sleeve pipe generation relative displacement, it is possible to cause two buffer spring generation elastic deformations, with buffered feedback sleeve pipe and actively sleeve pipe relative displacement.By the sphere inwall of the sphere outer tube wall and sleeve pipe bearing cavity that feed back sleeve pipe, described feedback sleeve pipe is rotatably mounted around actively sleeve pipe and fixes in the sleeve pipe bearing cavity of cover；This fixing cover of active sleeve pipe connects the second displacement thing by connector is fixing.
Equally for cushion impact forces, described passive sleeve outer wall being fixed with the support pipe box with circular support face so that when push-and-pull sleeve pipe group is pulled and foreshortens to extreme position, can conflict and feed back the mouth of pipe of sleeve pipe in the support face of described support pipe box.
Compared with the existing technology relatively, the having the technical effect that of this utility model " unit drive double swing-bar synchronize push-pull device at fixed "
1. this utility model realizes push-and-pull sleeve pipe group by the first universal pole, the second universal pole and universal load-supporting spherical structure and can freely swing with the centre of sphere of the slip outer wall of universal load-supporting ball, namely push-and-pull sleeve pipe group can arbitrarily change axis direction flexible while, the axis making push-and-pull thimble assembly can change along with the moment in the change procedure of variable apparatus and displacement of center of gravity and adaptive swing change, and keeps variable apparatus entirety equalising torque and gravity motion steady；This utility model, without driving the installation site that double swing-bar synchronizes push-pull device at fixed to make design meticulous especially for unit, promotes variable apparatus to simplify design, reduces design production cost；It is that variable apparatus smoothly change shape structure provides strong support and ensures that the variable unit of this utility model axis drives double swing-bar to synchronize push-pull device at fixed；
2. when because each displacement device of variable apparatus run inharmonious and occur operation be obstructed situation time, even if the variable unit of axis drives double swing-bar to synchronize push-pull device at fixed and the constant unit of axis drives double-rod to synchronize push-pull device at fixed to continue forced service, only can advance only small displacement, feedback boss will be made to change the on off state of pressing switch, thus promoting drive motor to change running status and avoid causing serious infringement；
3. this utility model is respectively at two push-and-pull sleeve pipe group configuration feedback sleeve pipes, pressing switch and feedback boss, unilateral push-and-pull sleeve pipe group breaks down and the on off state of pressing switch can be made to change, thus changing the running status of drive motor, it is to avoid normal side push-and-pull sleeve pipe group continues to run with and causes damage；
4. this utility model is by pressing switch and feedback boss, can detecting real-time to the extreme position of push-and-pull sleeve pipe group, avoid the traveled distance change that the abrasion between device and the mechanical movement deviation that is difficult to avoid that cause, the unit that accurately detecting axis is variable drives double swing-bar to synchronize push-pull device at fixed and the constant unit of axis drives double-rod to synchronize the extreme position that push-pull device at fixed runs, guarantee to install the variable unit of this axis to drive the variable apparatus that double swing-bar synchronizes push-pull device at fixed fully deployed to put in place and pack up completely and put in place, or guarantee that the constant unit of mounting axis drives the variable apparatus that double-rod synchronizes push-pull device at fixed fully deployed to put in place and packs up completely to put in place.
Accompanying drawing explanation
Fig. 1 is the axonometric projection schematic diagram at the visual angle, top of this utility model " unit drives double swing-bar to synchronize push-pull device at fixed " preferred embodiment；
Fig. 2 is the axonometric projection schematic diagram of the bottom views of described preferred embodiment, and wherein the bottom of two transmission shells 5 is removed, and the feedback sleeve pipe 7 in one group of push-and-pull sleeve pipe group is removed, and the feedback sleeve pipe 7 of another group push-and-pull sleeve pipe group is removed and buffer spring 9 is removed；
Fig. 3 is the orthographic projection section view fracture schematic diagram of the bottom views of described preferred embodiment, the active sleeve pipe 12 of one of which push-and-pull sleeve pipe group is disconnected, the casing 41 of drive motor and motor housing 4 is disconnected, and transmission shell 5, passive sleeve pipe 11 and the active sleeve pipe 12 base section under the horizontal plane crossing passive sleeve pipe 11 axis are broken away；
Fig. 4 is the axonometric projection schematic diagram feeding back the perpendicular cross-section that sleeve pipe 7 is crossed active sleeve pipe 12 that described preferred embodiment is set with actively sleeve pipe 12, and wherein actively sleeve pipe 12 is not cutd open, and only illustrates that this active sleeve pipe 12 is by feedback sleeve pipe 7 suit part；
Fig. 5 is the axonometric projection schematic diagram of the feedback sleeve pipe 7 of described preferred embodiment；
The feedback sleeve pipe 7 that Fig. 6 is described preferred embodiment is crossed the axonometric projection schematic diagram cut open of perpendicular of axis；
Fig. 7 is that described preferred embodiment fixes the orthographic projection cross-sectional schematic of cover 6 equipped with the active sleeve pipe feeding back sleeve pipe 7 and active sleeve pipe 12, and wherein feedback sleeve pipe 7 and active sleeve pipe 12 are broken away；
Fig. 8 is described preferred embodiment actively sleeve pipe 12 and feeds back the orthographic projection schematic diagram that sleeve pipe 7 does not occur to be cut open by the perpendicular crossing axis during relative displacement；
Fig. 9 is described preferred embodiment actively sleeve pipe 12 and the orthographic projection schematic diagram cut open by the perpendicular crossing axis when feeding back sleeve pipe 7 along the generation relative displacement of arrow P direction；
Figure 10 is described preferred embodiment actively sleeve pipe 12 and the orthographic projection schematic diagram cut open by the perpendicular crossing axis when feeding back sleeve pipe 7 along the generation relative displacement of arrow Q direction；
Figure 11 is the orthographic projection cross-sectional schematic that the torque output shaft 31 of described preferred embodiment engages with torque input gear 21；
Figure 12 is the axonometric projection schematic diagram of the first universal pole 22 of being rotatably connected of described preferred embodiment and the second universal pole 23；
Figure 13 is the axonometric projection schematic diagram of the universal load-supporting ball 26 of described preferred embodiment；
Figure 14 is the orthographic projection cross-sectional schematic of the internal structure that the transmission shell 5 of described preferred embodiment is cut open by the vertical plane of over torque input gear 21 axis；
Figure 15 is the orthographic projection cross-sectional schematic after preferred embodiment shown in Figure 14 swings along arrow S direction；
Figure 16 is the orthographic projection cross-sectional schematic after preferred embodiment shown in Figure 14 swings along arrow T direction；
Figure 17 is the orthographic projection cross-sectional schematic of the internal structure that the transmission shell 5 of described preferred embodiment is cut open by the horizontal plane of over torque input gear 21 axis；
Figure 18 is the orthographic projection cross-sectional schematic after preferred embodiment shown in Figure 17 swings along arrow U direction；
Figure 19 is the orthographic projection cross-sectional schematic after preferred embodiment shown in Figure 17 swings along arrow V direction.
Detailed description of the invention
It is described in further detail below in conjunction with preferred embodiment shown in accompanying drawing.
The utility model proposes a kind of unit drives double swing-bar to synchronize push-pull device at fixed, for making this unit of installation drive double swing-bar to synchronize to be formed between the first displacement thing and the second displacement thing in the equipment of push-pull device at fixed shift reciprocately.As shown in Figure 1 to Figure 3, described unit drives double swing-bar to synchronize push-pull device at fixed to include drive motor, two push-and-pull sleeve pipe groups 1, respectively the configuration of each push-and-pull sleeve pipe group 1, drive motor exported torque be converted to the transmission component of linearly shift reciprocately moment.Described push-and-pull sleeve pipe group 1 includes at least two sleeve pipes that coaxial sleeve stacks.No matter push-and-pull sleeve pipe group 1 includes how many sleeve pipes, always has two sleeve pipes to undertake the effect connecting the first displacement thing and the second displacement thing respectively, and if any more than three sleeve pipes, except these two sleeve pipes, other sleeve pipe plays the effect of continuity push-and-pull sleeve pipe group extended length.Therefore, a wherein sleeve pipe of push-and-pull sleeve pipe group 1 is connected with the first displacement thing as passive sleeve pipe 11.And wherein another root sleeve pipe of push-and-pull sleeve pipe group 1 is connected with the second displacement thing as active sleeve pipe 12, this active sleeve pipe 12 is also connected with the shift reciprocately moment outfan of transmission component and is driven other sleeve pipe relatively to do axial displacement, so that push-and-pull sleeve pipe group 2 is pushed out elongation vertically or is pulled shortening, and then between the first displacement thing and the second displacement thing, form shift reciprocately.As shown in Fig. 2, Fig. 3, Figure 11 to Figure 19, described unit drives double swing-bar synchronization push-pull device at fixed also to include two transmission shells 5 of respectively transmission component configuration.The internal universal rotational bearing cavity 52 including there is sphere inwall of this transmission shell 5.As shown in figure 11, described drive motor arranges the torque output shaft 31 stretched out respectively along same straight line to both sides, and on this torque output shaft 31, processing has external screw thread.As shown in Figure 3, described transmission component includes the flat column torque input gear 21 arranging engaging tooth on its face of cylinder, first universal pole 22 of column, second universal pole 23 of column, universal load-supporting ball 26, process threaded column screw mandrel 24, and be arranged in actively sleeve pipe 12, process threaded screw rod bushing 25.As shown in figure 12, the end of described first universal pole 22 is provided with its axis and is perpendicular to the first rotating shaft 221 of this first universal pole 22 axis, and the head end of described second universal pole 23 is provided with its axis and is perpendicular to the second rotating shaft 231 of this second universal pole 23 axis.Described head end, end are intended merely to the both ends distinguishing parts, are head end near drive motor side, are end away from drive motor side.First rotating shaft 221 is mutual with the second rotating shaft 231 rotating to be connected, the first universal pole 22 and the second universal pole 23 make that the axis of the first rotating shaft 221 is orthogonal with the axis of the second rotating shaft 231 to intersect, so that can relatively rotate with mutually perpendicular two degree of freedom.This utility model preferred embodiment, inserts the middle part of the first rotating shaft 221 by the second rotating shaft 231 and makes that the first rotating shaft 221 is mutual with the second rotating shaft 231 rotating to be connected.As shown in figure 13, described universal load-supporting ball 26 has sphere slip outer wall 262, arranges the universal pole carrying through hole 261 with cylinder inwall in it.As shown in Figure 14 to Figure 19, the the first universal pole 22 being rotatably connected and the second universal pole 23 are sleeved in the universal pole carrying through hole 261 of multi-directional ball bearing ball 26, make the first rotating shaft 221 overlap with the centre of sphere of the slip outer wall 262 of universal load-supporting ball 26 with the cross point of the second rotating shaft 231.Universal load-supporting ball 26 is rotatably mounted around in the universal rotational bearing cavity 52 of transmission shell 5.As shown in Fig. 3, Figure 11 and Figure 14, described torque input gear 21 engages torque output shaft 31.Described first universal pole 22 head end is fixedly and coaxially connected the rotating shaft of torque input gear 21.The end 23 of the second universal pole is fixedly and coaxially connected the head end of screw mandrel 24.The passive sleeve pipe 11 of described push-and-pull sleeve pipe group 1 is sleeved on outside screw mandrel, described screw mandrel 24 engages with screw rod bushing 25, namely screw rod bushing 25 rotates and along screw mandrel axis shift reciprocately on screw mandrel 24, so that the torque transfer of screw mandrel 24 is screw rod bushing 25 along screw axis to shift reciprocately moment.Described screw rod bushing 25 is exactly the shift reciprocately moment outfan of transmission component.As shown in Figure 14 to Figure 16, by first universal pole the 22, second universal pole 23 and universal load-supporting ball 26, make screw mandrel 24 can swing around the centre of sphere of the slip outer wall 262 of universal load-supporting ball 26 in the vertical plane of over torque input gear 21.The vertical plane of described over torque input gear 21 refers to the perpendicular in the three-dimensional system of coordinate shown in Fig. 1 and Fig. 2.As shown in Figures 17 to 19, by first universal pole the 22, second universal pole 23 and universal load-supporting ball 26, screw mandrel 24 is made can to swing around the centre of sphere of the slip outer wall 262 of universal load-supporting ball 26 in the horizontal plane of over torque input gear 21.The horizontal plane of described over torque input gear 21 refers to that Fig. 1 and Fig. 2 illustrates the horizontal plane in three-dimensional system of coordinate.Obviously, push-and-pull sleeve pipe group is made can not only to extend or shorten by first universal pole the 22, second universal pole 23 and universal load-supporting ball 26, additionally it is possible to the centre of sphere around the slip outer wall 262 of universal load-supporting ball 26 swings.
This utility model is realized push-and-pull sleeve pipe group 1 can be freely swung with the centre of sphere of the slip outer wall 262 of universal load-supporting ball 26 by first universal pole the 22, second universal pole 23 and universal load-supporting ball 26 structure, namely push-and-pull sleeve pipe group 1 can arbitrarily change axis direction flexible while, the axis making push-and-pull sleeve pipe group 1 can change along with the moment in the change procedure of variable apparatus and displacement of center of gravity and adaptive swing change, thus keeping variable apparatus entirety equalising torque and gravity motion steady.Adopt this utility model such scheme, without driving the installation site that double swing-bar synchronizes push-pull device at fixed to make design meticulous especially for unit, swung by the adaptability of push-and-pull sleeve pipe group 1 axis and unit can be made to drive double swing-bar synchronization push-pull device at fixed stably to merge with variable apparatus, and in variable apparatus conversion process, maintain equalising torque and the steadily of centre of gravity of variable apparatus, variable apparatus is promoted to simplify design, reduce design production cost, provide strong support for variable apparatus smoothly change shape structure and ensure.
In order to meet the variable apparatus demand to duty, need to limit the slewing area of universal load-supporting ball 26, in case thrust is helped pull a cart, pipe group 1 hunting range is excessive and affect operation stability, for limiting the slewing area of universal load-supporting ball 26, as shown in Figure 13 to Figure 16, the slip outer wall 262 of described universal load-supporting ball 26 is additionally provided with along same axis respectively to the two fixing axles 264 in location stretched out outside slip outer wall 262.The axis of the two fixing axles 264 in location is perpendicular to the universal pole carrying through hole 261 inwall axis of universal load-supporting ball 26, and crosses the centre of sphere of slip outer wall 262.On the inwall of the universal rotational bearing cavity 52 of described transmission shell 5, processing has the two location depressions 521 along same axis, and the axis of two location depressions 521 is perpendicular to the shaft axis of torque input gear 21, and crosses the centre of sphere of the inwall of universal rotational bearing cavity 52.When universal load-supporting ball 26 is rotatably mounted around in the universal rotational bearing cavity 52 of transmission shell 5, the fixing axle 264 in location of two universal load-supporting balls 26 is respectively protruding in the location depression 521 in each self-corresponding universal rotational bearing cavity 52.
This utility model preferred embodiment, as shown in Fig. 1 to Fig. 3, Figure 11 to Figure 14, described unit drives double swing-bar synchronization push-pull device at fixed also to include motor housing 4.This motor housing 4 includes the tubulose casing 41 of encapsulation drive motor main body and encapsulates the end cap 42 of 41 liang of mouths of pipe of casing respectively, and as shown in figure 11, the torque output shaft 31 of drive motor stretches out motor housing 4 from the end cap 42 of respective side respectively.Described transmission shell 5 also includes torque input bearing cavity 51.As shown in figure 13, described universal load-supporting ball 26 is additionally provided with the telescopic joint pipe 263 stretched out and formed by universal pole carrying through hole 261 end aperture.By connector and telescopic joint pipe 263, the head end of described passive sleeve pipe 11 connects described universal load-supporting ball 26.The two end cap 42 of described motor housing 4 is respectively arranged with respective connection support 421, makes the fixing first displacement thing that connects of motor housing 4 by this connection support 421, and then also realize passive sleeve pipe 11 and connect the first displacement thing.
For avoiding the occurrence of unfavorable push-and-pull situation, as shown in Fig. 4 to Figure 10, described unit drives double swing-bar synchronization push-pull device at fixed also to include being connected to feedback sleeve pipe 7 the second displacement thing, respectively each push-and-pull sleeve pipe group configuration.At least one pressing switch 8 of the control circuit of electrical connection drive motor it is installed with in feedback sleeve pipe 7.The outer tube surface of described active sleeve pipe 12 is fixedly installed its diameter and feeds back boss 121 more than the cylinder of active sleeve pipe 12 external diameter.Described feedback sleeve pipe 7 is sleeved on outside the feedback boss 121 on active sleeve pipe 12, the diameter of feedback boss 121 and the pressing switch 8 installation site in feedback sleeve pipe meet, when feeding back boss 121 and moving to pressing switch 8, the button of pressing switch 8 is fed back boss 121 and presses and make the on off state of pressing switch 8 be in Guan Bi conducting state；When feeding back boss 121 and moving away pressing switch 8, the button of pressing switch 8 is not pressed by feedback boss 121 and makes the on off state of pressing switch 8 be in disconnection off state.Thus when axially opposing displacement occurs active sleeve pipe 12 relative feedback sleeve pipe 7, the feedback boss 121 that the on off state of each pressing switch 8 can be moved changes, and then the control circuit of drive motor changes, according to the on off state of each pressing switch 8, the running status changing drive motor.Under normal circumstances, actively sleeve pipe 12 should displacement together with the second displacement thing, should not have relative displacement between the two.When there is unfavorable push-and-pull situation, actively sleeve pipe 12 and the second displacement thing generation relative displacement certainly will be caused.This utility model setting and the second displacement thing do not have the feedback sleeve pipe of relative displacement, with feed back boss 121 be with reference to, with pressing switch 8 for relative displacement harvester, the relative displacement of detecting feedback sleeve pipe 7 and actively sleeve pipe 12, the i.e. relative displacement of the second displacement thing and active sleeve pipe 12, occur thus detecting unfavorable push-and-pull situation, therefore this utility model can overcome defect and the weak point of prior art, it is to avoid aforementioned unfavorable push-and-pull situation occurs.
Obviously, avoiding the feedback sleeve pipe 7 of unfavorable push-and-pull, pressing switch 8 and feedback boss 121 structure to may be completely independent of the implementation of the variable double swing-bar push-pull device at fixed of above-mentioned axis, namely above-mentioned feedback sleeve pipe 7, pressing switch 8 and feedback boss 121 structure also are able to for the push-and-pull sleeve pipe changeless situation of group axis.Its scheme is,
Propose a kind of it can be avoided that unfavorable push-and-pull, unit that axis is constant drive double-rod to synchronize push-pull device at fixed, for making this unit of installation drive double swing-bar to synchronize to be formed between the first displacement thing and the second displacement thing in the equipment of push-pull device at fixed shift reciprocately.As shown in Figure 1 to Figure 3, described unit drives double swing-bar to synchronize push-pull device at fixed to include drive motor, two push-and-pull sleeve pipe groups 1, respectively the configuration of each push-and-pull sleeve pipe group 1, drive motor exported torque be converted to the transmission component of linearly shift reciprocately moment.Described push-and-pull sleeve pipe group 1 includes at least two sleeve pipes that coaxial sleeve stacks.Wherein a sleeve pipe is connected with the first displacement thing as passive sleeve pipe 11.And wherein another root sleeve pipe is connected with the second displacement thing as active sleeve pipe 12, this active sleeve pipe 12 is also connected with the shift reciprocately moment outfan of transmission component and is driven other sleeve pipe relatively to do axial displacement, so that push-and-pull sleeve pipe group is pushed out elongation vertically or is pulled shortening, and then between the first displacement thing and the second displacement thing, form shift reciprocately.As shown in Fig. 4 to Figure 10, described unit drives double-rod synchronization push-pull device at fixed also to include being connected to feedback sleeve pipe 7 the second displacement thing, respectively each push-and-pull sleeve pipe group 1 configuration.At least one pressing switch 8 of the control circuit of electrical connection drive motor it is installed with in feedback sleeve pipe 7.The outer tube surface of described active sleeve pipe 12 is fixedly installed its diameter and feeds back boss 121 more than the cylinder of active sleeve pipe 12 external diameter.Described feedback sleeve pipe 7 is sleeved on outside the feedback boss 121 on active sleeve pipe 12, the diameter of feedback boss 121 and the pressing switch 8 installation site in feedback sleeve pipe meet, when feeding back boss 121 and moving to pressing switch 8, the button of pressing switch 8 is fed back boss 121 and presses and make the on off state of pressing switch 8 be in Guan Bi conducting state, when feeding back boss 121 and moving away pressing switch 8, the button of pressing switch 8 is not pressed by feedback boss 121 and makes the on off state of pressing switch 8 be in disconnection off state.Thus when axially opposing displacement occurs active sleeve pipe 12 relative feedback sleeve pipe 7, the feedback boss 121 that the on off state of each pressing switch 8 can be moved changes, and then the control circuit of drive motor changes, according to the on off state of each pressing switch 8, the running status changing drive motor.
The structure of double swing-bar synchronization push-pull device at fixed is driven based on the unit that above-mentioned axis is variable, this utility model is implemented a kind of to make unit drive double swing-bar to synchronize the push-pull device at fixed method of avoiding unfavorable push-and-pull, it is simply that when under record normal condition, feedback sleeve pipe 7 and actively sleeve pipe 12 do not have a relative displacement, the on off state of each pressing switch 8 is as original state.Double swing-bar is driven to synchronize in push-pull device at fixed work process at unit, detect the on off state of each pressing switch 8, when the current switch states of pressing switch 8 is different from original state, control the running status of drive motor according to the situation of change of the on off state of pressing switch 8.It is out of service that the running status of control drive motor includes controlling drive motor, controls drive motor output opposing torque, and controls the output speed of drive motor.
In like manner said method is applied equally to the constant unit of axis and drives double-rod synchronization push-pull device at fixed.
Below scheme is not only suitable for the variable unit of axis and drives double swing-bar to synchronize push-pull device at fixed, is also applied for the constant unit of axis and drives double-rod push-pull device at fixed, drives double swing-bar to synchronize push-pull device at fixed for the unit that axis is variable and describes below scheme in detail.
In such scheme, arranging a pressing switch 8 in feedback sleeve pipe 7, reliability is poor, and the movement time of pressing switch 8, the axial length by feedback boss 121 was limited.If the axial length of feedback boss 121 is longer, it is possible to the movement time making pressing switch 8 is elongated.Want to reach desirable movement time, or reduce the axial length of feedback boss 121, or make the installation site of pressing switch 8 more accurate, but two ways all can improve product manufacturing precision, increases production cost.For guaranteeing that reliability realizes the accurate judgement to feedback sleeve pipe 7 with actively sleeve pipe 12 relative displacement with least cost efficient stable simultaneously, as shown in Fig. 4 to Figure 10, in feedback sleeve pipe 7, it is installed with the first pressing switch 81 and the second pressing switch 82.The position relationship with feedback boss 121 of installing of two pressing switch 81,82 meets, when feeding back sleeve pipe 7 and actively relative displacement not occurring between sleeve pipe 12, the button 811 of the first pressing switch 81 is pressed by feedback boss 121 and makes the on off state of this first pressing switch 81 be in Guan Bi conducting state, and the button 821 of the second pressing switch 82 is not pressed by feedback boss 121 and makes the second pressing switch 82 state be in disconnection off state.Thus when axially opposing displacement occurs active sleeve pipe 12 relative feedback sleeve pipe 7, the feedback boss 121 that the Switch State Combination in Power Systems of two pressing switch 81,82 can be moved changes, and then the control circuit of drive motor changes, according to the Switch State Combination in Power Systems of each pair of pressing switch 81,82, the running status changing drive motor.Arranging more than two pressing switch in feedback sleeve pipe 7 can cause Switch State Combination in Power Systems many, it is judged that mechanism is complicated, reduces detecting efficiency.In feedback sleeve pipe 7, two pressing switch 81,82 are set, and make a pressing switch 81 be in Guan Bi conducting state at normal condition, another pressing switch 82 is in disconnection off state, not only reduce Switch State Combination in Power Systems, and the time that on off state changes is determined by the distance between the respective button 811,821 of pressing switch 81,82, the axial length by feedback boss 121 is not limited, and production is less costly, and therefore such scheme reliability, cost and efficiency are all good.
As shown in Figure 8, when feeding back sleeve pipe 7 and actively relative displacement not occurring between sleeve pipe 12, the button 811 of the first pressing switch 81 is pressed by feedback boss 121 and makes the on off state of this first pressing switch 81 be in Guan Bi conducting state, and the button 821 of the second pressing switch 82 is not pressed by feedback boss 121 and makes the second pressing switch 82 state be in disconnection off state.Situation shown in Fig. 8 is exactly the original state of the first pressing switch 81 and the second pressing switch 82, and drive motor should remain on state.As shown in Figure 9, when feeding back sleeve pipe 7 and the relative displacement in direction shown in arrow P actively occurring between sleeve pipe 12, the button 811 of the first pressing switch 81 is released because feedback boss 121 moves, the on off state making this first pressing switch 81 is in disconnection off state, and the button 821 of the second pressing switch 82 keeps not fed back boss 121 and presses and make the second pressing switch 82 state be in disconnection off state.Occurring the relative displacement in direction shown in arrow P to cause the relative original state of the Switch State Combination in Power Systems of the first pressing switch 81 and the second pressing switch 82 to change between feedback sleeve pipe 7 and actively sleeve pipe 12, therefore situation shown in Fig. 9 should change the running status of drive motor.As shown in Figure 10, when feeding back sleeve pipe 7 and the relative displacement in direction shown in arrow Q actively occurring between sleeve pipe 12, the button 811 of the first pressing switch 81 keeps being fed back boss 121 and presses and make the on off state of this first pressing switch 81 be in Guan Bi conducting state, the button 821 of the second pressing switch 82 is pressed because feedback boss 121 moves, and makes the second pressing switch 82 state be in Guan Bi conducting state.Occurring the relative displacement in direction shown in arrow Q to cause the relative original state of the Switch State Combination in Power Systems of the first pressing switch 81 and the second pressing switch 82 to change between feedback sleeve pipe 7 and actively sleeve pipe 12, therefore situation shown in Figure 10 should change the running status of drive motor.
Based in feedback sleeve pipe 7, the first pressing switch 81 and the second pressing switch 82 is set, and the original state adhering to two first pressing switch 81 in two feedback sleeve pipes 7 separately is Guan Bi conducting state, the original state adhering to two second pressing switch 82 in two feedback sleeve pipes 7 separately is off the scheme of off state, so double swing-bar is driven to synchronize to avoid the method for unfavorable push-and-pull to comprise the steps described in push-pull device at fixed work process at unit
A. the on off state of all first pressing switch the 81, second pressing switch 82 is detected；When the current switch states detecting arbitrary pressing switch is different from the original state of this pressing switch, perform step B；
B. drive motor is controlled out of service.
When there is unfavorable push-and-pull situation, controlling drive motor out of service is avoid losing good method.It is of course also possible to the practical situation according to variable apparatus adjusts accordingly, select the optimum scheme controlling drive motor running status.
In some cases, such as variable apparatus is able to automatically be transformed into from wheelchair the Wheel-chair type bed of bed by driven by power, the load that unit driving double swing-bar synchronizes push-pull device at fixed is bigger, actively the displacement moment of sleeve pipe 12 is just bigger, if there is unfavorable push-and-pull situation, actively sleeve pipe 12 can be driven and be formed greater impact power, for reducing the impulsive force formed when relative displacement occurs for feedback sleeve pipe 7 and actively sleeve pipe 12, such as Fig. 2, Fig. 4, Fig. 7 to Figure 10, in described feedback sleeve pipe 7, it is fixedly installed buffer spring 9 respectively in feedback boss 121 both sides vertically.When feeding back sleeve pipe 7, with active sleeve pipe 12, relative displacement occurring, it is possible to cause two buffer springs 9 that elastic deformation occurs, with buffered feedback sleeve pipe 7 and actively sleeve pipe 12 relative displacement, and then the impulsive force of buffering actively sleeve pipe 12.
This utility model preferred embodiment, by the attachment structure of the impulsive force structure of the attachment structure of feedback sleeve pipe 7 and the second displacement thing, buffering actively sleeve pipe 12, actively sleeve pipe 12 and the second displacement thing all by fixing cover 6 realization of active sleeve pipe, if Fig. 1, Fig. 4 are to shown in 6, described unit drives double swing-bar synchronization push-pull device at fixed also to include the fixing cover 6 of actively sleeve pipe.This active sleeve pipe is fixed and is provided with the sleeve pipe bearing cavity 61 with sphere inwall in cover 6.The first and end of sleeve pipe bearing cavity 61 is provided with coaxial sleeve through hole.Buffer spring 9 it is fixedly installed respectively in feedback boss 121 both sides vertically.The outer tube wall of described feedback sleeve pipe 7 is processed into dome shape.The inwall of feedback sleeve pipe 7 is provided with the annulus column Internal baffle 72 that two panels is coaxial with feedback sleeve pipe 7.At feedback sleeve pipe two ends, the mouth of pipe is respectively arranged with its internal diameter annulus column outer baffle 71 less than feedback sleeve pipe 7 spout diameter.When feeding back sleeve pipe 7 and being sleeved on active sleeve pipe 12, making feedback boss 121 between two Internal baffles 72, two buffer springs 9 are clipped between Internal baffle 72 and the outer baffle 71 of feedback boss 121 side, respective place respectively.Described two buffer springs 9 connect actively sleeve pipe 12, make when feeding back sleeve pipe 7, with active sleeve pipe 12, relative displacement occurring, can result in two buffer springs 9 and elastic deformation occurs, with buffered feedback sleeve pipe 7 and actively sleeve pipe 12 relative displacement, and then the impulsive force of buffering actively sleeve pipe 12.By the sphere inwall of the sphere outer tube wall and sleeve pipe bearing cavity 61 that feed back sleeve pipe 7, described feedback sleeve pipe 7 is rotatably mounted around actively sleeve pipe and fixes in the sleeve pipe bearing cavity 61 of cover 6.This fixing cover 6 of active sleeve pipe connects the second displacement thing by connector is fixing.
In like manner, when push-and-pull sleeve pipe group 1 retracts and foreshortens to extreme position, namely push-and-pull sleeve pipe group 1 retracts and foreshortens to the most in short-term, actively passive sleeve pipe 11 can be formed impulsive force by sleeve pipe 12, impulsive force when foreshortening to extreme position is retracted for reducing push-and-pull sleeve pipe group 1, as shown in Figure 1 to Figure 3, described passive sleeve pipe 11 outer wall is fixed with the support pipe box 111 with circular support face 112, make when push-and-pull sleeve pipe group 1 is pulled and foreshortens to extreme position, namely push-and-pull sleeve pipe group 1 foreshortens to the most in short-term, can conflict and feed back the mouth of pipe of sleeve pipe 7 in the support face 112 of described support pipe box 111.
Claims (8)
1. unit drives double swing-bar to synchronize a push-pull device at fixed, for making this unit of installation drive double swing-bar to synchronize to be formed between the first displacement thing and the second displacement thing in the equipment of push-pull device at fixed shift reciprocately；
Described unit drives double swing-bar to synchronize push-pull device at fixed to include drive motor, two push-and-pull sleeve pipe groups, respectively the configuration of each push-and-pull sleeve pipe group, two groups of transmission components drive motor is exported torque being converted to linearly shift reciprocately moment；
Described push-and-pull sleeve pipe group includes at least two sleeve pipes that coaxial sleeve stacks；Wherein a sleeve pipe connects as passive sleeve pipe and the first displacement thing；And wherein another root sleeve pipe connects as active sleeve pipe and the second displacement thing, this active sleeve pipe is also connected with the shift reciprocately moment outfan of transmission component and is driven other sleeve pipe relatively to do axial displacement, so that push-and-pull sleeve pipe group is pushed out elongation vertically or is pulled shortening, and then between the first displacement thing and the second displacement thing, form shift reciprocately；It is characterized in that:
Described unit drives double swing-bar synchronization push-pull device at fixed also to include two transmission shells of respectively transmission component configuration；This transmission enclosure includes the universal rotational bearing cavity with sphere inwall；
Described drive motor arranges the torque output shaft stretched out respectively along same straight line to both sides, and on this torque output shaft, processing has external screw thread；
Described transmission component includes the flat column torque input gear arranging engaging tooth on its face of cylinder, first universal pole of column, the second universal pole of column, universal load-supporting ball, process threaded column screw mandrel, and be arranged in actively sleeve pipe, process threaded screw rod bushing；
The end of described first universal pole is provided with its axis and is perpendicular to the first rotating shaft of this first universal joint rod axis, and the head end of described second universal pole is provided with its axis and is perpendicular to the second rotating shaft of this second universal joint rod axis；First rotating shaft is mutual with the second rotating shaft rotating to be connected, and makes that the axis of the first rotating shaft is orthogonal with the axis of the second rotating shaft to intersect, so that the first universal pole and the second universal pole can relatively rotate with mutually perpendicular two degree of freedom；
Described universal load-supporting ball has sphere slip outer wall, arranges the universal pole carrying through hole with cylinder inwall in it；The the first universal pole being rotatably connected and the second universal pole are sleeved in the universal pole carrying through hole of universal load-supporting ball, make the first rotating shaft overlap with the centre of sphere of the slip outer wall of universal load-supporting ball with the cross point of the second rotating shaft；Universal load-supporting ball is rotatably mounted around in the universal rotational bearing cavity of transmission shell；
Described torque input gear engagement torque output shaft；Described first universal pole head end is fixedly and coaxially connected the rotating shaft of torque input gear；The end of the second universal pole is fixedly and coaxially connected the head end of screw mandrel；The passive casing pipe sleeve of described push-and-pull sleeve pipe group is contained in outside screw mandrel, and described screw mandrel engages with screw rod bushing so that the torque transfer of screw mandrel is screw rod bushing along screw axis to shift reciprocately moment；Make push-and-pull sleeve pipe group can not only extend or shorten by the first universal pole, the second universal pole and universal load-supporting ball, additionally it is possible to the centre of sphere around the slip outer wall of universal load-supporting ball swings.
2. unit according to claim 1 drives double swing-bar to synchronize push-pull device at fixed, it is characterised in that:
The slip outer wall of described universal load-supporting ball is additionally provided with along same axis respectively to the two fixing axles in location stretched out outside slip outer wall；The axis of the two fixing axles in location is perpendicular to the universal pole carrying through-hole wall axis of universal load-supporting ball, and crosses the centre of sphere of slip outer wall；
On the inwall of the universal rotational bearing cavity of described transmission shell, processing has the two location depressions along same axis, and the axis of two location depressions is perpendicular to the shaft axis of torque input gear, and crosses the centre of sphere of the inwall of universal rotational bearing cavity；
When universal load-supporting ball is rotatably mounted around in the universal rotational bearing cavity of transmission shell, the fixing axle in location of two universal load-supporting balls is respectively protruding in the location depression in each self-corresponding universal rotational bearing cavity.
3. unit according to claim 2 drives double swing-bar to synchronize push-pull device at fixed, it is characterised in that:
Also include motor housing；This motor housing includes the tubulose casing of encapsulation drive motor main body and encapsulates the end cap of casing two mouth of pipe respectively, and the torque output shaft of drive motor stretches out motor housing from the end cap of respective side respectively；
Described transmission shell also includes torque input bearing cavity；
Described universal load-supporting ball is additionally provided with the telescopic joint pipe stretched out and formed by universal pole carrying through hole end aperture；
Described transmission shell connects the end cap of motor housing, and the torque output shaft meshed together and torque input gear are sleeved in torque input bearing cavity；
The telescopic joint pipe connecting universal load-supporting ball fixed by described passive sleeve pipe by connector；
The two end cap of described motor housing is respectively arranged with respective connection support, makes motor housing fixing connection the first displacement thing by this connection support.
4. unit according to claim 1 drives double swing-bar to synchronize push-pull device at fixed, it is characterised in that:
Also include being connected to feedback sleeve pipe the second displacement thing, respectively each push-and-pull sleeve pipe group configuration；At least one pressing switch of the control circuit of electrical connection drive motor it is installed with in feedback sleeve pipe；
The outer tube surface of described active sleeve pipe is fixedly installed its diameter and feeds back boss more than the cylinder of active sleeve outer；
Described feedback casing pipe sleeve is contained in outside the feedback boss on active sleeve pipe, the diameter of feedback boss and pressing switch installation site in feedback sleeve pipe meet, when feeding back boss and moving to pressing switch, the button of pressing switch is fed back boss pressing and makes the on off state of pressing switch be in Guan Bi conducting state；When feeding back boss and moving away pressing switch, the button of pressing switch is not made the on off state of pressing switch be in disconnection off state by feedback boss pressing；Thus when axially opposing displacement occurs active sleeve pipe relative feedback sleeve pipe, the feedback boss that the on off state of each pressing switch can be moved changes, and then the control circuit of drive motor changes, according to the on off state of each pressing switch, the running status changing drive motor.
5. unit according to claim 4 drives double swing-bar to synchronize push-pull device at fixed, it is characterised in that:
It is installed with the first pressing switch and the second pressing switch in feedback sleeve pipe；
The position relationship with feedback boss of installing of two pressing switch meets, when feeding back sleeve pipe and actively relative displacement not occurring between sleeve pipe, the button of the first pressing switch is fed back boss pressing and makes the on off state of this first pressing switch be in Guan Bi conducting state, and the button of the second pressing switch is not made the second pressing switch state be in disconnection off state by feedback boss pressing；Thus when axially opposing displacement occurs active sleeve pipe relative feedback sleeve pipe, the feedback boss that the Switch State Combination in Power Systems of two pressing switch can be moved changes, and then the control circuit of drive motor changes, according to the Switch State Combination in Power Systems of each pair of pressing switch, the running status changing drive motor.
6. unit according to claim 5 drives double swing-bar to synchronize push-pull device at fixed, it is characterised in that:
In described feedback sleeve pipe, it is fixedly installed buffer spring respectively in feedback boss both sides vertically；
When feeding back sleeve pipe with actively sleeve pipe generation relative displacement, it is possible to cause two buffer spring generation elastic deformations.
7. unit according to claim 5 drives double swing-bar to synchronize push-pull device at fixed, it is characterised in that:
Also include the fixing cover of actively sleeve pipe；This active sleeve pipe is fixed and is provided with the sleeve pipe bearing cavity with sphere inwall in cover；The first and end of sleeve pipe bearing cavity is provided with coaxial sleeve through hole；
Buffer spring it is fixedly installed respectively in feedback boss both sides vertically；
The outer tube wall of described feedback sleeve pipe is processed into dome shape；The inwall of feedback sleeve pipe is provided with the annulus column Internal baffle that two panels is coaxial with feedback sleeve pipe；At feedback sleeve pipe two ends, the mouth of pipe is respectively arranged with its internal diameter annulus column outer baffle less than feedback sleeve pipe spout diameter；
When feeding back casing pipe sleeve and being contained on active sleeve pipe, making feedback boss between two Internal baffles, two buffer springs are clipped between Internal baffle and the outer baffle of feedback boss side, respective place respectively；
Described two buffer springs connect actively sleeve pipe so that when feeding back sleeve pipe with actively sleeve pipe generation relative displacement, it is possible to cause two buffer spring generation elastic deformations；
By the sphere inwall of the sphere outer tube wall and sleeve pipe bearing cavity that feed back sleeve pipe, described feedback sleeve pipe is rotatably mounted around actively sleeve pipe and fixes in the sleeve pipe bearing cavity of cover；This fixing cover of active sleeve pipe connects the second displacement thing by connector is fixing.
8. unit according to claim 7 drives double swing-bar to synchronize push-pull device at fixed, it is characterised in that:
Being fixed with the support pipe box with circular support face on described passive sleeve outer wall so that when push-and-pull sleeve pipe group is pulled and foreshortens to extreme position, can conflict and feed back the mouth of pipe of sleeve pipe in the support face of described support pipe box.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521060279.9U CN205339341U (en) | 2015-12-19 | 2015-12-19 | Synchronous push -and -pull device of unit drive double pendulum pole |
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| CN201521060279.9U CN205339341U (en) | 2015-12-19 | 2015-12-19 | Synchronous push -and -pull device of unit drive double pendulum pole |
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| CN205339341U true CN205339341U (en) | 2016-06-29 |
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| CN201521060279.9U Withdrawn - After Issue CN205339341U (en) | 2015-12-19 | 2015-12-19 | Synchronous push -and -pull device of unit drive double pendulum pole |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106901914A (en) * | 2015-12-19 | 2017-06-30 | 深圳市托安医疗器械有限公司 | Unit drives double swing-bar synchronization push-pull device at fixed and its method for avoiding unfavorable push-and-pull |
| WO2019061558A1 (en) * | 2017-09-30 | 2019-04-04 | 常熟市平方轮椅有限公司 | Worm drive mechanism for wheelchair |
-
2015
- 2015-12-19 CN CN201521060279.9U patent/CN205339341U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106901914A (en) * | 2015-12-19 | 2017-06-30 | 深圳市托安医疗器械有限公司 | Unit drives double swing-bar synchronization push-pull device at fixed and its method for avoiding unfavorable push-and-pull |
| CN106901914B (en) * | 2015-12-19 | 2024-07-23 | 深圳市托安医疗器械有限公司 | Single-machine driving double-swing-rod synchronous push-pull device and method for avoiding unfavorable push-pull |
| WO2019061558A1 (en) * | 2017-09-30 | 2019-04-04 | 常熟市平方轮椅有限公司 | Worm drive mechanism for wheelchair |
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