EP3238574A2 - Entraînement double à moteur électrique - Google Patents

Entraînement double à moteur électrique Download PDF

Info

Publication number: EP3238574A2
Authority: EP; European Patent Office
Prior art keywords: lever; double drive; output member; drive according; drive
Prior art date: 2016-04-29
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP17167280.1A

Other languages

German (de)

English (en)

Other versions

EP3238574B1 (fr

EP3238574A3 (fr

Inventor

Eckhart Dewert

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

De Werth Group AG

Original Assignee

De Werth Group AG

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

2016-04-29

Filing date

2017-04-20

Publication date

2017-11-01

2016-08-31 Priority claimed from DE102016116256.6A external-priority patent/DE102016116256A1/de

2017-04-20 Application filed by De Werth Group AG filed Critical De Werth Group AG

2017-11-01 Publication of EP3238574A2 publication Critical patent/EP3238574A2/fr

2018-02-14 Publication of EP3238574A3 publication Critical patent/EP3238574A3/fr

2021-10-06 Application granted granted Critical

2021-10-06 Publication of EP3238574B1 publication Critical patent/EP3238574B1/fr

Status Active legal-status Critical Current

2037-04-20 Anticipated expiration legal-status Critical

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Classifications

- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C20/00—Head-, foot- or like rests for beds, sofas or the like
- A47C20/04—Head-, foot- or like rests for beds, sofas or the like with adjustable inclination
- A47C20/041—Head-, foot- or like rests for beds, sofas or the like with adjustable inclination by electric motors

Definitions

the invention relates to an electric motor double drive for adjusting relative to each other pivotally supporting parts of a support means for supporting a mattress.
Such double drives are well known. They have a housing designed as a base body, in which two drive units are arranged, each having an output member which cooperates in the mounting position of the double drive with a pivot member in the form of a pivot shaft, the same is in operative connection with a support member to be adjusted for pivoting.
the pivot shaft is part of a Verstellbeschlags that is part of a support to be adjusted, for example, a slatted base.
the output member is formed in the known furniture drives usually by a linearly movable spindle nut. To implement the linear movement of the spindle nut in a pivoting movement of the pivot shaft, a pivot lever is rotatably mounted on the pivot shaft. To adjust a support member of the support means, the spindle nut presses against the articulation lever, so that the pivot shaft is pivoted and thereby the support member is adjusted in the desired manner.
the invention is based on the object to improve a corresponding double drive with respect to an adjustment of a box spring mattress.
the invention provides that the pivot levers are mounted pivotably mounted on the base body such that the base body together with the pivoting levers forms a unit attachable to the support means.
a box spring mattress with a double drive according to the invention can also be designed to be particularly electric motor adjustable.
the output member is a spindle nut which is arranged against rotation and movable in the axial direction on a stationary threaded spindle, which is in rotary drive connection with an electric motor of the drive unit.
the output member is a threaded spindle, which is mounted against rotation and movable in its axial direction and on which a stationary spindle nut is arranged, which is in rotary drive connection with an electric motor of the drive unit.
a spindle drive is arranged in the drive train of the drive unit.
Corresponding spindle drives are available as relatively simple and inexpensive standard components and are suitable for applying large forces or torques.
An effective connection between the pivoting lever and the output member of the drive unit can be produced according to the respective requirements in any suitable manner.
a development of the invention provides that the or each output member is in operative connection with a setting lever, one end of which is pivotally connected to the associated pivot lever spaced from the ends thereof and whose free end cooperates with the output member.
the set-up lever can be attached to the output member.
An advantageous development of the invention provides in that respect that the output member acts on the set-up loosely. In this way, in particular an emergency release, for example in the event of a power failure, is facilitated.
a further development of the embodiment with the set-up lever provides that the output member presses to verwschenken an associated support member from a starting position of the adjusting movement in the direction of an end position of the adjusting movement against the free end of the setting lever.
pivot lever has a recess extending in its longitudinal direction, which is designed such that in the initial position of the adjusting movement, the output member and the setting lever are received in the recess. In this way, results in a compact, flat structure.
pivot lever is designed as a two-armed lever, the first lever arm acts on the associated to be adjusted support member and the second lever arm is in driving connection with the output member of the drive means or can be brought.
a development of the aforementioned embodiment provides that the output member is designed as a pressure piece that presses against the second lever arm when adjusting the associated support member.
a further development of the embodiment of the two-armed lever provides that between the second lever arm and the output member of the drive unit, a tab is arranged, whose first end is pivotally connected to the pivot axis of the pivot lever and about an axis parallel to the pivot axis with the second lever arm and whose second end is acted upon or acted upon by the output member.
a particularly simple arrangement for transmitting the driving force of the drive motor results on the pivot lever.
a further development of the aforementioned embodiment provides that the output member loosely acts on the second end of the tab by means of an engagement surface. In this way, an emergency release of the furniture drive, for example, during a power outage, easier.
the engagement surface is concave in cross-section and the second end of the tab is convex, as provided by a further development.
Another embodiment of the embodiment with the tab provides spring means for biasing the second end of the tab against the engagement surface. In this way, the tab is securely held in engagement with the engagement surface.
tab is provided with a handle member which is gripped by an opening in a housing of the double drive, such that the tab against the spring action of the spring means is disengaged from the engagement surface can be brought for disengaging the double drive.
an emergency release of the double drive is realized in a particularly simple manner.
the output member is designed as a pulling piece that pulls when adjusting the associated support member on the second lever arm.
the threaded spindle is claimed during the adjustment to train. While at a compressive stress of the spindle there is a risk of lateral riveting, this danger is avoided in a tensile stress. Accordingly, the threaded spindle can be made smaller in this embodiment, so at a compressive stress, so that the manufacturing cost of the entspechenden double drive are reduced.
An operative connection between the pulling piece and the two-armed lever can be made according to the respective requirements in any suitable manner.
the Switzerland is connected via a linkage with at least one rod or a lever mechanism with at least one lever with ............ two-armed lever in drive connection.
the linkage or the lever mechanism for example, and in particular an additional reduction can be provided in the drive train.
a development of the aforementioned embodiment provides that the pull piece is connected via a rod to the second lever arm, wherein one end of the rod is pivotally connected to the Switzerland choir and the other end of the rod to the pivot axis of the two-armed lever pivotally connected to the second lever arm , In this way, a particularly simple structure.
An electromotive adjustable support means for supporting a box spring mattress or a cushion bed is specified in claim 20. It has at least one double drive according to the invention.
FIG. 1 an embodiment of an electromotive adjustable support device 2 for supporting a box spring mattress is shown.
the box spring mattress itself is not shown in the drawing to simplify the illustration.
the support device 2 has a frame 4 and relatively pivotable, plate-shaped support members, which have a stationary central support member 6, with one end hinged and pivotable about a horizontal pivot axis an upper body support member 8 is connected. With the upper body support member 8 facing away from the end of the central support member 6 is pivotally connected and pivotable about a horizontal pivot axis, a leg support member 10 to which a calf support member 12 is articulated.
Fig. 2 are omitted for ease of illustration in the support members 6 to 12.
Fig. 3 In addition, the frame 4 of the support device 2 is omitted
the double drive 14 has a base body 16, which is formed in this embodiment as a C-profile rail.
the drive unit 18 will be explained in more detail.
the drive unit 18 has an electric motor 20, which is in rotary drive connection via a worm gear with a threaded spindle 22, on which a spindle nut 24, which forms the output member of the drive unit 18, is arranged so as to be rotationally fixed and axially movable in the axial direction of the threaded spindle 22.
a pivot member is provided in the form of a pivot lever 26 which is pivotally mounted about a pivot axis 28 on the main body 16 of the double drive 14.
the pivot axis 28 facing away from the end of the pivot lever 26 carries rollers 30, 30 'on which the upper body support member 8 is supported with its side facing away from the box spring mattress, so that the pivot lever 26, the upper body support member 8 applied loosely.
the pivot lever 26 With the pivot lever 26 is spaced from the ends of one end of a raising lever 32 hingedly connected, the other end is acted upon by the spindle nut 24 loose.
the electric motor 20 drives the threaded spindle 22 such that the spindle nut 24 in the Drawing moves to the right and presses against the facing end of the raising lever 32, whereby the raising lever 32 sets up.
the pivot lever 26 is pivoted in the drawing in a clockwise direction, so that the upper body support member is pivoted in the desired manner.
the pivot lever 26, 26 ' are formed in the illustrated embodiment by injection molded plastic.
the pivot lever 26 has on its spindle nut 24 and the set-up lever 32 side facing a longitudinal direction of the pivot lever 26 extending recess 34 which is formed so that in the initial position of the adjustment, in which the upper body support member 8 arranged substantially horizontally is, the spindle nut 24 and the raising lever 32 are received in the recess 34.
the pivot lever 26 is pivotally mounted on the base body 16 of the double drive 14 is fixed, a separate Verstellbeschlag is unnecessary. In this way, a particularly simple structure.
the pivot levers 26, 26 ' are permanently attached to the main body in the double drive 14 according to the invention, so that the double drive 14 and the pivot levers 26, 26' form a structural unit.
the double drive 14 is designed for tool-free mounting on the support device 2.
the support means 2 transverse to its longitudinal direction extending struts 36, 36 '(see, in particular Fig. 2 and Fig. 3 ) on.
the support elements 38, 38 ' are arranged, with which the base body 16 in the mounting position of the double drive 14 shown in the drawing on the struts 36, 36' is supported.
the support elements 38, 38 ' can be fastened to the struts 36, 36' via suitable fastening means. In the illustrated embodiment, however, the support elements 38, 38 'lay loose on the struts 36, 36'.
further fastening means for tool-free attachment of the central support member 6 are provided on the base body 16 of the double drive 14, which have a tool-free manually operable screwing device in this embodiment.
the screwing device has in the illustrated embodiment, threaded bolts 40, 40 '(see. Fig. 3 ), by means of which the central support member 6 with the base body 16 of the double drive 14 is screwed.
threaded bolts 40, 40 ' by means of which the central support member 6 with the base body 16 of the double drive 14 is screwed.
a tool-free attachment wing screws are provided, of which in Fig. 6 only a thumbscrew 42 can be seen.
the leg support part 10 and the calf support part 12 associated pivot lever 26 ' carries at its ends a parallel to the pivot axis of the pivot lever 26' extending axis 44 (see. Fig. 3 ), which is received in mounting position of the double drive 14 in receptacles 46, 46 ', which are fixed to the underside of the calf support part 12. In this way, the leg support part 10 and the calf support part 14 are adjusted during pivoting of the pivot lever 26.
Independent inventive significance also has a method for emergency lowering of an adjusted by means of a double drive according to the invention support member.
the pivot lever 26 can be moved counterclockwise in the drawing, wherein the upper body support member moves back to the starting position and the raising lever 32 slides over the spindle nut 24 in the drawing to the left. In the starting position of the adjustment movement reached again at the end of this movement, the set-up lever 32 and the spindle nut 24 are in the recess 34 received the pivot lever 26.
the raising lever 32 may be provided at the bottom of its free end with a run-on slope 46, as seen from Fig. 6 evident.
the emergency lowering is thus designed very simple.
a second embodiment of a double drive 14 according to the invention is shown, on the base body 16 in accordance with the first embodiment, pivot elements in the form of pivoting levers 26, 26 are each pivotally mounted about a pivot axis 28, 28 '.
the double drive 14 is designed for tool-less mounting on a support means for a box spring mattress or a cushion bed, as has been explained for the first embodiment.
Fig. 7 shows the dual drive 14 in an initial position of the adjustment movement with a position of the pivot lever 26, 26, which corresponds to an adjustment position of the support means in which the support members span a substantially horizontal support plane.
Fig. 8 shows the double drive according to Fig. 7 in a position of the pivot lever 26, 26 ', which is an end position of the adjusting movement corresponds, in which the support members are relatively displaced relative to each other.
the second embodiment differs from the first embodiment initially in that the base body 16 is formed as a housing 50, in which the pivot levers 26, 26 'associated drive units are added.
the housing 50 consists in the illustrated embodiment of two half-shells 52, 52 'made of plastic.
the half-shells 52, 52 ' are screw-connected or screw-connected with each other.
fastening tabs 54, 54 ' are integrally formed on the half-shells 52, 52, as in Fig. 8 and especially good at Fig. 14 recognizable.
the assembly of the double drive 14 on a support means takes place in principle in the same manner as explained in relation to the first embodiment.
the double drive 14 is placed by means of the support elements 38, 38 'on the transverse struts of the support means.
the double drive 14 can be screwed via the fastening straps 54, 54 'with its housing with a stationary central support part of a support device.
the screw can be made in particular via a tool-operated screwing.
Fig. 9 shows the double drive 14 in the adjustment accordingly Fig. 1 , for reasons of explanation of the structure the drive units 18, 18 ', the half-shell 52 of the housing 16 is omitted. Below, only the drive unit 18 is explained in detail, the drive unit 18 'is constructed accordingly and will therefore not be explained in detail.
the drive unit 18 has a rotatably mounted in the housing 16, stationary spindle nut 56 which is mounted on a rotatably mounted in the housing 16 and movable in its axial direction threaded spindle 58.
a worm wheel 60 is rotatably connected, which is in engagement with a screw 62 which is in engagement with the drive shaft of an electric motor of the drive unit 18, so that the threaded spindle 58 according to the direction of rotation of the drive shaft of the electric motor in Fig. 10 moved to the left or right.
a pressure piece 64 is placed on the pivot axis 28 facing the end of the threaded spindle 58.
the pivot lever 26 is formed as a two-armed lever in the second embodiment, the first lever arm 66, the associated to be adjusted support member loosely applied and the second lever arm 68 is in driving connection with the drive member 18 formed by the pressure member 64 drive unit.
a tab 70 is arranged, whose first end is remote to the pivot axis 28 pivotally connected to the second lever arm 68 and the second end of which Pressure piece 64 can be pressurized or is pressurized during the adjustment movement.
the pressure piece acts on the second end of the tab 70 by means of an engagement surface loose.
Fig. 11 shows the drive unit 18, wherein the pressure piece 64 is omitted for explanation.
Fig. 12 shows the pressure piece 64 taken by itself, in particular an engagement surface 72 of the pressure piece 64 can be seen.
the engagement surface 72 and the second end of the tab are profiled in cross-section and formed complementary to each other.
the engagement surface 64 is concave in cross-section and the second end of the tab is correspondingly complementarily convex, with the engagement surface 72 and the end of the tab 70 being arcuate in cross-section.
spring means are provided which are formed in this embodiment between an inner wall of the housing 50 and the tab 70 acting tension spring in the form of a coil spring 74.
end position of the adjustment movement of the electric motor drives the spindle nut 56 such that the threaded spindle 58 with the pressure piece 64 in Fig. 10 moved to the left.
the pressure member 64 presses against the second end of the tab 70.
the coil spring 74 By means of the coil spring 74 while the second end of the tab 70 is held in engagement with the engagement surface 72.
the tab 70 is provided at its lower end with a handle member 76 which is accessible through an opening formed in the housing 50, as is apparent from Fig. 8 is apparent.
the grip element 76 By means of the grip element 76, the tab 70 can be pulled down and moved out of the path of movement of the pressure piece 64. Subsequently, the pivot lever with the thus adjusted support member in Fig. 10 be reset counterclockwise, wherein the tab 70 moves outside of the housing 50 below the stopped pressure piece.
the pivot lever 26 can be moved by hand Fig. 10 to be moved clockwise, the tab 70 again comes under the action of the coil spring 74 into engagement with the engagement surface 72 of the pressure piece 64.
Fig. 13 is the distance between the pivot axes 28, 28 'to each other marked with "A".
the distance "A" is greater than 620 mm. In this way, arise in the adjustment of support parts of a support particularly favorable conditions.
a modification of the aforementioned embodiment is that the base body is arranged on a support element, in particular made of metal, at its ends support elements or support areas for resting on transverse struts of a particular existing metal outer frame support means for supporting a box spring mattress or a cushion bed has, wherein the carrier element spans on the transverse struts spans the outer frame in its longitudinal extent.
the carrier element may be formed in particular by a flat iron.
the assembly of a double drive according to the invention takes place such that the support element is placed with its ends on the cross struts of the outer frame. If necessary, the carrier element can then be attached to the outer frame. Incidentally, the operation is the same as in the previous embodiments.
a third embodiment of a furniture drive according to the invention in the form of a double drive 14 will be described below with reference to the FIGS. 15 to 19 explained.
Fig. 15 shows the double drive 14 in combination with a support means 2, of which for illustrative purposes only an outer frame 78 is shown, the longitudinally extending longitudinal struts 80, 80 ', which are connected at their ends by cross braces 82, 82' together.
the support parts of the support means 2 are for the sake of illustration in the FIGS. 15 to 19 Not shown.
Fig. 15 shows the double drive 14 in an initial position of the adjustment, in which the support parts span each other a substantially horizontal support plane.
Fig. 16 shows the double drive 14 in an end position of the adjustment, in which the support members are pivoted maximum relative to each other.
Fig. 17 shows the double drive 14 taken by itself, ie without the support means 2.
the main body 16 of the double drive 14 a support member 84, which is formed in this embodiment by a flat iron.
the support member 84 bearing elements 86, 86 ' which are formed by separate, connected to the support member 84 components made of plastic and pointing away from each other each have a mouth-shaped opening 88 and 88'.
the clear width of the mouth-shaped opening 88 or 88 ' corresponds substantially to the height of the longitudinal struts 80, 80'.
the double drive 14 For mounting the double drive 14 on the outer frame 84 of the double drive 14 is inserted into the limited by the outer frame 78 opening, which coincides its longitudinal axis substantially with a connecting line between corner points 90, 90 'of the outer frame 78 (see. Fig. 16 ). Starting from this position, the double drive 14 is then rotated into the mounting position shown in FigPosition 16, in which the mouth-shaped openings 88 and 88 'of the support members 86 and 86', the cross braces 82 and 82 'slightly clamped embrace, so that the double drive 14 is connected to the frame.
the mouth-shaped openings 88, 88 ' are dimensioned so that the double drive 14 in the mounting position without tension between the longitudinal struts 80, 80' is arranged.
the double drive 14 has an approximately centered with the support member 84 connected to the housing-like middle part 92, which in the illustrated Embodiment is formed by two half shells made of plastic.
the drive units 18, 18 'of the double drive 14 are added.
the fastening tabs 54, 54 ' are integrally formed on the half-shells of the housing-like central part 92.
the double drive 16 For fixing the double drive 16 to the support parts, it is in the in Fig. 15 shown mounting position of the double drive only required that the stationary central support member 6, to which the upper body support member 8 and the leg support member 10 are hinged to the calf support member 12, by means of the fastening tabs 54, 54 'with the central part 92 of the double drive 14 to screw.
a tool-operated screwing device can be used, as has been explained with reference to the first two embodiments.
the assembly of the double drive 14 on the support means 2 then takes place completely without tools and thus in a particularly simple and fast way.
the pivot lever 26 is applied to the upper body support member 8 loose.
the receptacles 46, 46 'for the axle 44 may be preassembled on the calf support member 12, so that it is only necessary to push the axle 54 into the corresponding openings of the receptacles 46, 46'. This assembly step is done so without tools.
a stationary spindle nut 96 is arranged, which is in rotary drive connection with a drive motor of the drive unit 18'.
a pull piece 98' is connected, which communicates with the pivot lever 26 'via a linkage in operative connection, in this embodiment, a single rod 100' has.
one end of the rod 100 ' is pivotally connected to the pull 98' about a hinge axis parallel to the pivot axis 28 ', while the other end of the rod 100 is eccentric to the pivot axis 28' about a hinge axis parallel to the pivot axis 28 ' Pivoting lever 26 'is pivotally connected.
the electric motor drives the spindle nut 96 'in such a way that the threaded spindle 94' in Fig. 19 moved to the right.
the threaded spindle 94 ' is claimed to train.
the threaded spindles 94 ', 94 in the central part 92 of the double drive 16 are arranged parallel to each other but offset from one another perpendicular to its longitudinal axis along the vertical extent of the central part 92. In this way, moves the spindle nut 96 'facing away from the free end of the threaded spindle 94' in the space below the spindle nut 96 and the threaded spindle 94 during the adjustment, while the Switzerland Native 98 facing away from the free end of the threaded spindle 94 in the space during the adjustment above the spindle nut 96 'and the threaded spindle 94' moves. In this way, a particularly compact construction of the double drive 14 results, so that the housing-like middle part 92 of the double drive 14 can be dimensioned correspondingly small.
the third embodiment of the double drive 14 according to the invention is particularly simple and compact in construction.

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Health & Medical Sciences (AREA)
General Health & Medical Sciences (AREA)
Nursing (AREA)
Invalid Beds And Related Equipment (AREA)

EP17167280.1A 2016-04-29 2017-04-20 Entraînement double à moteur électrique Active EP3238574B1 (fr)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
DE102016108033		2016-04-29
DE102016113980		2016-07-28
DE102016116256.6A DE102016116256A1 (de)	2016-04-29	2016-08-31	Elektromotorischer Doppelantrieb

Publications (3)

Publication Number	Publication Date
EP3238574A2 true EP3238574A2 (fr)	2017-11-01
EP3238574A3 EP3238574A3 (fr)	2018-02-14
EP3238574B1 EP3238574B1 (fr)	2021-10-06

Family

ID=58579071

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP17167280.1A Active EP3238574B1 (fr)	2016-04-29	2017-04-20	Entraînement double à moteur électrique

Country Status (2)

Country	Link
EP (1)	EP3238574B1 (fr)
ES (1)	ES2903048T3 (fr)

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2017
- 2017-04-20 EP EP17167280.1A patent/EP3238574B1/fr active Active
- 2017-04-20 ES ES17167280T patent/ES2903048T3/es active Active

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EP4094636A1 (fr) *	2021-05-03	2022-11-30	Global Technical Equipment BVBA	Système de levage et dispositif de lit réglable
BE1029364B1 (nl) *	2021-05-03	2022-12-05	Global Technical Equipment	Oprichtsysteem en verstelbare bedinrichting

Also Published As

Publication number	Publication date
ES2903048T3 (es)	2022-03-30
EP3238574B1 (fr)	2021-10-06
EP3238574A3 (fr)	2018-02-14

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