WO2024016420A1 - Brake device for electric drive actuator, and electric drive actuator - Google Patents

Brake device for electric drive actuator, and electric drive actuator Download PDF

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Publication number
WO2024016420A1
WO2024016420A1 PCT/CN2022/114370 CN2022114370W WO2024016420A1 WO 2024016420 A1 WO2024016420 A1 WO 2024016420A1 CN 2022114370 W CN2022114370 W CN 2022114370W WO 2024016420 A1 WO2024016420 A1 WO 2024016420A1
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WO
WIPO (PCT)
Prior art keywords
braking
clamp
motor shaft
elements
inner hole
Prior art date
Application number
PCT/CN2022/114370
Other languages
French (fr)
Chinese (zh)
Inventor
蔡赛军
李晋
刘伟
Original Assignee
锐迈科技股份有限公司
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.)
Filing date
Publication date
Priority claimed from CN202221916132.5U external-priority patent/CN219755171U/en
Priority claimed from CN202210873903.5A external-priority patent/CN115143210B/en
Application filed by 锐迈科技股份有限公司 filed Critical 锐迈科技股份有限公司
Publication of WO2024016420A1 publication Critical patent/WO2024016420A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
    • F16D49/08—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like shaped as an encircling band extending over approximately 360 degrees
    • F16D49/10—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like shaped as an encircling band extending over approximately 360 degrees mechanically actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
    • F16D49/16—Brakes with two brake-blocks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
    • F16D49/18—Brakes with three or more brake-blocks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes

Definitions

  • the invention relates to a braking device for an electrically driven actuator and an electrically driven actuator having said braking device.
  • a variety of electric furniture with electric drive actuators is known in the prior art, such as electric seats, electric sofas, electric beds, etc., which can move under the action of the electric drive actuator. Transform between multiple different postures.
  • the electric drive actuator is usually configured Braking device.
  • Such braking devices are known in the prior art in various ways and generally consist of a braking element and an energy accumulator, the braking element grips the motor shaft of the electrically driven actuator under the action of the energy accumulator, This achieves the braking effect with the help of friction.
  • the energy accumulator must often surround the entire outer circumference of the braking element in order to elastically press the braking element onto the motor shaft. This results in problems such as the accumulator being too large in size, the installation process being complicated, the precision of the fit between the braking element and the accumulator being high, and the braking force having to be adjusted as needed through a tedious process.
  • the technical problem to be solved by the present invention is to provide a braking device for an electrically driven actuator and an electrically driven actuator having such a braking device, which has the advantages of simplified structure, convenient installation and simple maintenance.
  • the present invention provides a braking device for an electrically driven actuator, which includes a plurality of braking elements and the plurality of braking elements are tightened to each other.
  • the binding device wherein the plurality of braking elements respectively have internal arc surfaces, and can jointly form a brake ring with a substantially annular inner hole by means of the binding device, and the motor shaft of the electric drive actuator passes through Through the inner hole, the two braking elements are tightened to each other by means of the clamp, so that friction is formed between the internal arc surface constituting the inner hole and the motor shaft, thereby achieving a braking effect.
  • the clamp acts as an energy accumulator and fastens the braking elements to each other, so that the braking device can exert a braking effect on the motor shaft passing through it.
  • tightening includes binding, clamping, pulling, pressing, etc., as long as the inner diameter of the brake ring composed of the brake elements can be reduced, so that it can generate friction braking with the motor shaft inserted in the brake ring. Just move the effect.
  • the band does not wrap around the entire outer circumferential surface of the braking element in the circumferential direction, but only acts on a partial area of the circumferential surface of the braking device consisting of the braking element. Therefore, when replacing the clamps, one of the clamps can be replaced first, and then the other clamp can be replaced. This ensures that when changing the clamp, the two braking elements are always placed on the motor shaft without falling loose.
  • the plurality of braking elements are respectively formed with trunnion halves protruding outwards, preferably protruding radially outwards, at their mutually butting interfaces, and each two mutually butting joints are formed with trunnion halves.
  • the trunnion halves are combined into a complete trunnion for the clamp to clamp on and tighten the plurality of braking elements to each other.
  • the trunnion is insertable into a groove in the actuator housing, thereby fixing the braking device.
  • the trunnion is thereby designed not only for retaining the clamp but also for fixing the braking device relative to the actuator housing.
  • two brake elements are provided, more preferably two brake elements of essentially identical design are provided.
  • the type of parts that need to be manufactured is advantageously reduced, thereby further reducing manufacturing costs.
  • the plurality of braking elements are pivotally connected at one end by means of a hinge and at the other end by means of a clamp, wherein one end of the clamp is engaged with one of the braking elements.
  • the lock is connected and the other end is snap-locked with another braking element.
  • the clamp preferably the snake spring
  • the clamp is only within an angular range of less than 180°, preferably within an angular range of less than 120°, further preferably within an angular range of less than 90°, most preferably within It is arranged on the brake ring around the inner hole within an angular range of less than 60°.
  • two brake elements are provided, more preferably two brake elements of essentially identical design are provided.
  • the clamp is arranged outside said inner bore, preferably in a plane perpendicular to the longitudinal axis of the motor shaft.
  • the clamp may be composed of a coil spring, a torsion spring, a U-shaped elastic clamp piece, a snake spring or a tension spring.
  • a latching structure is formed on the clamp, which can form a latching connection with a cooperating latching structure formed on the braking element, preferably the trunnion.
  • the restraint is configured as a torsion spring
  • the torsion spring is inserted into each two trunnions of two adjacent braking elements that are in close contact with each other, thereby tightening the plurality of braking elements.
  • a locking structure is configured on the elastic clamp piece, and the locking structure can form a locking connection with a matching locking structure formed on the trunnion
  • the elastic clamp piece preferably has a U-shaped cross section.
  • the locking structure is preferably configured as an inwardly protruding protrusion formed on the U-shaped arm of the elastic clamp piece.
  • the matching locking structure is configured as a recess formed on the trunnion that matches the protrusion.
  • the snake spring has a plurality of circumferential sections extending along the circumference of the inner bore and a plurality of axial sections or radial sections respectively interconnecting the circumferential sections. sections, thus forming the "zigzag" serpentine direction of the snake spring.
  • other forms of special-shaped springs can also be used.
  • the snake spring can form a plurality of grooves through its own meandering and extending serpentine shape, so that it can easily form a locking connection with the braking element, thereby providing easier installation and replacement.
  • rib-like projections are preferably formed on the braking element, which projections can be connected to each other in a latching manner with the snake spring.
  • the protrusion extends radially outward from the inner bore on the end face of the braking element.
  • the serpentine bending portion of the snake spring forms a groove, which can interlock with the protrusion of the braking element.
  • snake springs of different specifications can be easily replaced to adjust the braking force exerted on the motor shaft as needed.
  • other types of protrusions can also be used, such as cylindrical protrusions, as long as they can form a latching connection with a special-shaped spring, preferably a snake spring.
  • the restraint is configured as a tension spring
  • two tension springs are preferably provided, each tension spring being connected with one end to one of the braking elements and with the other end to the other braking element, wherein , the connection between the tension spring and the braking element can be realized through a form-fitting locking connection.
  • a pin is configured on the outward-facing end face of each braking element, and the end of the tension spring is locked on the pin, thereby tightening the two braking elements against each other.
  • the two tension springs are arranged parallel to each other, and the arrangement direction of each tension spring is parallel to the direction of movement of the braking element towards each other.
  • the present invention also provides a braking device for an electrically driven actuator, which includes an integrally constructed braking element and a restraint that contracts the braking element, wherein the The braking element is configured as a C-shaped brake ring.
  • the internal arc surface of the brake ring forms a generally annular inner hole.
  • the motor shaft of the electric drive actuator passes through the inner hole of the C-shaped brake ring, wherein in the C-shaped
  • the two free ends of the brake ring are respectively configured with two tabs extending generally radially outward, and the headed pegs pass through the holes on the two tabs, and the binding device is inserted into the headed pegs.
  • a retaining ring is provided on the side of the free end of the headed bolt away from its head, and the electrically driven actuator
  • the clamp is formed by a compression spring.
  • the headed peg is insertable into a groove in the actuator housing, thereby securing the braking device.
  • the inner diameter of the braking element is larger than the outer diameter of the motor shaft.
  • the braking element is also sleeved on the motor shaft, it does not form sufficient frictional contact with the motor shaft to apply braking force. Only when the braking element contracts radially due to the pretightening force of the compression spring, does the braking element form frictional contact with the motor shaft, thereby applying a braking force to the motor shaft.
  • a limiting mechanism on the braking element cooperates with a complementary corresponding limiting mechanism on the actuator housing, thereby limiting the rotation of the braking device.
  • the limiting means are preferably formed by outwardly extending projections formed on the braking element, for example trunnions or webs of the braking element or projections additionally formed on the braking element, said Trunnions or tabs or projections can be inserted into grooves in the actuator housing.
  • grooves or gaps for example a gap between two webs, can also be additionally formed on the braking element, and accordingly projections can be formed on the actuator housing.
  • the braking device is also fixed through the cooperation of the groove and the protrusion. This flexibly and reliably ensures that the braking device remains fixed relative to the actuator housing during rotation of the motor shaft, thus ensuring a reliable braking effect.
  • the grooves formed in the brake element save material for the brake element, resulting in cost advantages.
  • the limiting means can consist of a non-circular, preferably rectangular outer contour of the braking element itself.
  • the braking element and thus the braking ring formed by the braking element, has a rectangular outer contour, which can fit into a groove on the driver housing, so that no additional stop mechanism is required.
  • the braking device is fixed so that the braking device does not rotate together with the rotation of the motor shaft.
  • the braking element can also have other non-circular outer contours.
  • an electric drive actuator is also provided, wherein the electric drive actuator has a braking device according to the above.
  • an electric furniture such as an electric sofa, an electric seat, an electric bed, an electric table, etc., having the above-mentioned electric drive actuator is also provided.
  • FIG. 1 to 3 a schematically illustrate a first embodiment of a braking device according to the invention
  • FIG. 3 b schematically shows a schematic diagram of a variant of the first embodiment of the braking device according to the invention
  • Figure 4 shows a schematic diagram of a preferred modification of the first embodiment of the braking device according to the invention
  • Figure 5 shows a schematic diagram of another preferred improvement of the first embodiment of the braking device according to the invention.
  • FIG. 6 shows a schematic detail of the restraint in the braking device according to FIG. 4 or FIG. 5 ;
  • Figures 7 to 10 exemplarily show schematic diagrams of a second embodiment of a braking device according to the invention.
  • FIG. 11 and 12 schematically show schematic diagrams of two variants of a second embodiment of a braking device according to the invention.
  • Figures 13 and 14 exemplarily show schematic views of a third embodiment of a braking device according to the invention.
  • Figures 15 to 17 exemplarily show schematic views of a fourth embodiment of a braking device according to the invention.
  • Figure 18 shows a schematic diagram of a preferred modification of the fourth embodiment of the braking device according to the invention.
  • a first embodiment of a braking device 1 for an electrically driven actuator 2 is shown by way of example with reference to FIGS. 1 to 3 a , wherein the electrically driven actuator 2 is preferably a linear motor.
  • the motor shaft 21 protrudes outward from the end surface of the actuator housing, and the braking device 1 is provided on the end surface of the actuator housing.
  • the braking device 1 includes two braking elements 11a of the same design and a restraint 12 that tightens the two braking elements 11a to each other.
  • the clamp is designed as a torsion spring 12a.
  • the two braking elements 11a each have an internal arc surface 111, and can jointly form a braking ring with a substantially annular inner hole by means of the restrainer, that is, the torsion spring 12a, to electrically drive the motor of the actuator 2
  • the shaft 21 passes through the inner hole.
  • the two braking elements are tightened with each other by means of the torsion spring 11a, so that friction is formed between the internal arc surface 111 constituting the inner hole and the motor shaft 21, thereby achieving a braking effect.
  • the two braking elements 11a are respectively formed with a pair of opposing trunnion halves 112 protruding radially outward at their mutually butted interfaces.
  • Each two trunnion halves 112 are combined to form a complete trunnion for the torsion spring 12a to clamp on and to tighten the two braking elements 11a with each other.
  • a lug-shaped protrusion 113 extending radially outward is also configured in the middle of the braking element 11a.
  • the protrusion 113 can be inserted into the braking element 11a (not shown in the figure).
  • the braking device In the groove of the actuator housing, the braking device is fixed so that it does not rotate together with the rotation of the motor shaft, but can remain fixed relative to the actuator housing, thereby achieving friction on the motor shaft. braking effect.
  • the trunnion 112 can also be inserted into a recess of the actuator housing (not shown in the figures), thereby fixing the braking device.
  • FIG 3b shows a variant of the first embodiment.
  • the braking device 1 shown in Figure 3b includes three braking elements 11a' of the same design and a restraint 12 that binds the three braking elements 11a' to each other.
  • the clamp is also designed as a torsion spring 12a.
  • each braking element 11a' is formed with a pair of opposing trunnion halves 112' protruding radially outward at the mutually butted interfaces. Each two trunnion halves butt mutually. The portion 112' is combined into a complete trunnion for the torsion spring 12a to clamp on and tighten the two braking elements 11a' to each other.
  • each braking element 11a' is designed as a circular arc extending at 120°.
  • the brake element can also be designed as a plurality of components extending at different angles, as long as they form a brake ring with an inner bore.
  • Figure 4 shows a preferred modification of the first embodiment, in which an elastic clamp piece 12a' is used as a clamp.
  • the two braking elements 11a are also respectively formed with a pair of opposing trunnion halves 112 protruding radially outward at their mutually butting interfaces. Each two trunnion halves 112 butting with each other are formed.
  • the half parts 112 are combined into a complete trunnion for the elastic clamping piece 12a' to clamp on and tighten the two braking elements 11a to each other.
  • Figure 5 shows another preferred modification of the first embodiment by using an elastic clamp piece 12a' as a clamp.
  • the braking element 11 a according to FIG. 5 does not have lug-like projections extending radially outwards thereof.
  • the braking device is secured solely by means of a form-fitting latching of the trunnion half 112 or the trunnion formed therein with the recess of the actuator housing.
  • FIG. 6 shows a detail of the restraint in the braking device shown in FIG. 4 or 5 .
  • the elastic clamp piece 12a' is configured in the form of a U-shaped arm, and a locking structure is configured on the U-shaped arm.
  • the locking structure is configured as a protruding point 121 protruding inwardly from the U-shaped arm.
  • the protruding point 121 is connected with a not-shown structure on the outside of the trunnion 112 .
  • the matching locking structure in the form of a groove forms a locking connection, thereby further ensuring that the elastic clamp piece 12a' is held on the braking element to prevent it from falling off.
  • FIG. 7 to 10 schematically illustrate a second embodiment of a braking device according to the invention.
  • the motor shaft 21 protrudes outward from the end surface of the actuator housing, and the braking device 1 is provided on the end surface of the actuator housing.
  • the braking device 1 includes two braking elements 11b of substantially the same design, preferably substantially mirror-image design, and a restraint that tightens the two braking elements 11b with each other.
  • the clamp is configured as a serpentine spring 12b.
  • the snake spring has a plurality of circumferential sections extending along the circumferential direction of the inner hole and a plurality of axial sections or radial sections respectively connecting the circumferential sections to each other, thereby forming a "zigzag" serpentine shape of the snake spring.
  • the two brake elements 11b each have an internal arc surface 111, and can jointly form a brake ring with a substantially annular inner hole by means of the snake spring 12b, through which the motor shaft 21 of the electric drive actuator 2 passes. Bore.
  • rib-shaped protrusions 115 are formed on the brake element 11 b , which protrusions 115 are radially outward starting from the inner hole and axially outward on the end face of the brake element. extend.
  • the two braking elements 11b are pivotally connected at one end by means of a hinge 114 and at the other end by means of a snake spring 12b, wherein the serpentine bend of the snake spring 12b forms a groove, which can be connected with the brake.
  • the lug-like projections 115 of the elements snap into each other.
  • One end of the snake spring 12b is snap-connected to the lug-shaped protrusion 115 on one of the braking elements 11b, and the other end of the snake spring 12b is snap-connected to the lug-shaped protrusion 115 on the other braking element 11b. , so that friction is formed between the internal arc surface constituting the inner hole and the motor shaft, thereby achieving a braking effect.
  • the lug-like projections 115 can cooperate with grooves (not shown in the figures) formed on the actuator housing and are preferably inserted into the grooves, thereby fixing the braking device.
  • the snake spring only surrounds the arc angle within a partial arc angle range, preferably within an arc angle range of less than 180°, further preferably within an arc angle range of less than 120°, particularly preferably within an arc angle range of less than 90°.
  • the inner hole is arranged on the brake ring. As shown in Figure 9, the snake spring is arranged around the inner hole within an arc angle range of less than 90°.
  • a recess 116 is preferably also formed on the braking element. As shown in FIG. 10 , recesses 116 are formed at the mutually abutting interfaces of the braking elements 11 b so that the recesses are penetrated after the braking elements are combined into a brake ring.
  • This recess 116 is not only beneficial to material saving, but can also cooperate with corresponding protrusions of the actuator housing (not shown in the figure) to additionally secure the braking device.
  • FIG. 11 shows a variant of the second embodiment of the braking device according to the invention.
  • the two braking elements 11 b are pivotally connected at one end by means of a hinge, and at the other end a trunnion half 112 is respectively formed at their butting interface.
  • the two butting trunnion halves 112 are It is combined into a complete trunnion for the elastic clamping piece 12a' to clamp on it and tighten the two braking elements 11b with each other.
  • FIG. 12 shows a further variant of the second embodiment of the braking device according to the invention.
  • a pin-like projection 115&apos is formed on the braking element 11b.
  • the two braking elements 11b are pivotally connected at one end by means of a hinge 114, and are connected and tightened at the other end by means of a tension spring 12c locked with the protrusion 115'.
  • FIG. 13 and 14 illustrate schematic diagrams of a third embodiment of a braking device according to the invention.
  • the motor shaft 21 protrudes outward from the end surface of the actuator housing, and the braking device 1 is provided on the end surface of the actuator housing.
  • the braking device 1 includes two braking elements 11c of the same design and a restraint that tightens the two braking elements 11c with each other.
  • the clamp is configured as a tension spring 12c.
  • the two braking elements 11c each have an internal arc surface, and can jointly form a braking ring with a substantially annular inner hole by means of a tension spring 12c, through which the motor shaft 21 of the electric drive actuator 2 passes.
  • tension springs 12c are provided.
  • the tension springs 12c are arranged outside the inner hole, and are preferably arranged parallel to the combination direction of the two braking elements 11c. in a plane perpendicular to the longitudinal axis of the motor shaft 21 .
  • a latching structure designed as a hook 122 is respectively formed on the end of the tension spring 12 c, and a matching latching structure designed as a pin 117 is formed on the outward-facing end surface of the braking element 11 c. structure.
  • Each tension spring 12c is latchingly connected with the pin 117 on one of the braking elements 11c with the hook 122 at one end, and is connected with the other braking element 11c with the hook 122 at the other end.
  • the pins 117 on the two tension springs 117 are locked and connected, so that the arrangement direction of the two tension springs 12c is parallel to the moving direction of the braking element 11c approaching each other.
  • the two braking elements 11c are tightened with each other by means of the tension spring 12c, so that friction is formed between the internal arc surface constituting the inner hole and the motor shaft 21, thereby achieving a braking effect.
  • the braking elements 11c each have a substantially rectangular shape, so that the brake ring composed of two braking elements 11c also has a substantially rectangular outer contour, which can fit in the figure.
  • the braking device In a groove on the driver housing (not shown), the braking device is fixed without the need for other additional stop mechanisms, so that the braking device does not rotate together when the motor shaft rotates.
  • other non-circular outer contours such as triangles or other polygons, can also be considered.
  • 15 to 18 illustrate schematic diagrams of a fourth embodiment of a braking device according to the invention.
  • the motor shaft 21 protrudes outward from the end surface of the actuator housing, and the braking device 1 is provided on the end surface of the actuator housing.
  • the braking device 1 includes an integrally constructed braking element 11 d and a clamp that contracts the braking element 11 d.
  • the braking element 11d is configured as a C-shaped brake ring
  • the inner arc surface 111 of the brake ring forms a generally annular inner hole
  • the motor shaft of the electrically driven actuator 21 passes through the inner hole of the C-shaped brake ring.
  • Two webs 118 extending generally radially outwards are respectively formed on the two free ends of the C-shaped brake ring, which in this embodiment are called first webs 118 a and second webs 118 b.
  • the headed pegs 13 pass through the holes in the two tabs 118 .
  • the clamp configured as a compression spring 12d is inserted into the headed bolt 13 and respectively abuts against the bolt head 131 and the first tab 118a close to the bolt head 131 along the bolt shaft direction.
  • a retaining ring 14 is provided on the side of the free end of the headed bolt 13 away from the bolt head 131.
  • the retaining ring 14 is stopped and pressed against the third end away from the bolt head 131 by means of the elastic force of the compression spring 12d.
  • On the second connecting piece 118b On the second connecting piece 118b. With the elastic preload of the compression spring 12d, the brake ring shrinks and hugs the motor shaft 21, so that friction is formed between the internal arc surface constituting the inner hole and the motor shaft 21, thereby realizing the braking effect.
  • the inner diameter of the braking element 11d is larger than the outer diameter of the motor shaft 21.
  • the braking element is also sleeved on the motor shaft, it does not form sufficient frictional contact with the motor shaft to apply braking force. Only when the braking element contracts radially due to the pre-tightening force of the compression spring 12d, the braking element comes into frictional contact with the motor shaft, thereby applying a braking force to the motor shaft.
  • the headed peg 13 can be inserted into a groove of the actuator housing, not shown in the figures, thereby fixing the braking device.
  • two diametrically opposed protrusions 119 extending radially outward are also configured on the braking element 11d, and the protrusions 119 can be inserted into a structure not shown in the figure. into the groove on the actuator housing to secure the braking device.
  • Figure 18 shows a schematic diagram of a preferred modification of the fourth embodiment of the braking device according to the invention.
  • the modification shown in FIG. 18 differs from FIGS. 16 and 17 in that the braking element 11 d does not have radially opposite projections 119 extending radially outwards.
  • the braking device is fixed solely by means of a headed bolt 13 inserted into a groove in the actuator housing.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Braking Arrangements (AREA)

Abstract

A brake device (1) for an electric drive actuator (2). The brake device (1) comprises a plurality of brake elements (11a; 11a'; 11b; 11c) and a hoop (12) for binding the plurality of brake elements (11a; 11a'; 11b; 11c) together, wherein the plurality of brake elements (11a; 11a'; 11b; 11c) each have an inner arc-shaped surface (111), and can jointly form, by means of the hoop (12), a brake ring having a substantially annular inner hole. A motor shaft (21) of the electric drive actuator (2) passes through the inner hole. The brake elements (11a; 11a'; 11b; 11c) are bound together by means of the hoop (12), so that friction is formed between the motor shaft (21) and the inner arc-shaped surfaces (111), which form the inner hole, thereby achieving a braking effect. Further provided are an electric drive actuator (2) having a brake device (1), and electric furniture having an electric drive actuator (2).

Description

用于电驱动致动器的制动装置和电驱动致动器Braking devices for electrically driven actuators and electrically driven actuators
本申请要求于2022年7月22日递交的中国专利申请第202210873903.5号以及于2022年7月22日递交的中国专利申请第202221916132.5号的优先权，在此全文引用上述中国专利申请公开的内容作为本申请的一部分。This application claims priority from Chinese Patent Application No. 202210873903.5 submitted on July 22, 2022 and Chinese Patent Application No. 202221916132.5 submitted on July 22, 2022. The contents disclosed in the above Chinese patent application are cited in full here as part of this application.
技术领域Technical field
本发明涉及一种用于电驱动致动器的制动装置以及具有所述制动装置的电驱动致动器。The invention relates to a braking device for an electrically driven actuator and an electrically driven actuator having said braking device.
背景技术Background technique
在现有技术中已知多种具有电驱动致动器、尤其是线性致动器的电动家具，例如电动座椅、电动沙发、电动床具等，其能够在电驱动致动器的作用下在多个不同姿态之间变换。为了对电驱动致动器的马达轴的旋转减速，或为了使电动家具能够保持在特定的姿态上，防止电驱动致动器在外部负载的作用下发生倒转，通常为电驱动致动器配置制动装置。这种制动装置在现有技术中以多种方式已知，其通常由制动元件和蓄能器组成，制动元件在蓄能器的作用下抱紧电驱动致动器的马达轴，从而借助摩擦力实现制动作用。然而在这种制动装置中，蓄能器往往必须环绕在制动元件的整个外周面上，才能将制动元件弹性紧迫在马达轴上。这就造成蓄能器尺寸过大、安装过程复杂、对制动元件和蓄能器之间配合精度要求高的问题，而且必须通过繁琐的过程才能根据需要调整制动力。A variety of electric furniture with electric drive actuators, especially linear actuators, is known in the prior art, such as electric seats, electric sofas, electric beds, etc., which can move under the action of the electric drive actuator. Transform between multiple different postures. In order to decelerate the rotation of the motor shaft of the electric drive actuator, or to keep the electric furniture in a specific posture and prevent the electric drive actuator from reversing under the action of an external load, the electric drive actuator is usually configured Braking device. Such braking devices are known in the prior art in various ways and generally consist of a braking element and an energy accumulator, the braking element grips the motor shaft of the electrically driven actuator under the action of the energy accumulator, This achieves the braking effect with the help of friction. However, in such braking devices, the energy accumulator must often surround the entire outer circumference of the braking element in order to elastically press the braking element onto the motor shaft. This results in problems such as the accumulator being too large in size, the installation process being complicated, the precision of the fit between the braking element and the accumulator being high, and the braking force having to be adjusted as needed through a tedious process.
发明内容Contents of the invention
本发明所要解决的技术问题在于，提供一种用于电驱动致动器的制动装置和具有这种制动装置的电驱动致动器，其具有结构简化、安装便捷和维护简单的优势。The technical problem to be solved by the present invention is to provide a braking device for an electrically driven actuator and an electrically driven actuator having such a braking device, which has the advantages of simplified structure, convenient installation and simple maintenance.
根据本发明的一个方面，为解决所述技术问题，本发明提供一种用于电驱动致动器的制动装置，其包括多个制动元件和将所述多个制动元件相互束紧的箍束器，其中，所述多个制动元件分别具有内部弧面，并能够借助所述箍 束器共同组成具有一个基本环形的内孔的刹车环，电驱动致动器的马达轴穿过所述内孔，借助所述箍束器将所述两个制动元件相互束紧，使得构成所述内孔的所述内部弧面与马达轴之间形成摩擦，从而实现制动作用。According to one aspect of the present invention, in order to solve the technical problem, the present invention provides a braking device for an electrically driven actuator, which includes a plurality of braking elements and the plurality of braking elements are tightened to each other. The binding device, wherein the plurality of braking elements respectively have internal arc surfaces, and can jointly form a brake ring with a substantially annular inner hole by means of the binding device, and the motor shaft of the electric drive actuator passes through Through the inner hole, the two braking elements are tightened to each other by means of the clamp, so that friction is formed between the internal arc surface constituting the inner hole and the motor shaft, thereby achieving a braking effect.
在根据本发明的制动装置中，箍束器作为蓄能器将制动元件相互束紧，从而使制动装置能够向穿设其中的马达轴施加制动作用。在此，束紧包括捆扎、卡紧、牵拉、压紧等方式，只要能将由制动元件所构成的刹车环的内径缩小，从而使其与穿设在刹车环中的马达轴产生摩擦制动效果即可。In the braking device according to the invention, the clamp acts as an energy accumulator and fastens the braking elements to each other, so that the braking device can exert a braking effect on the motor shaft passing through it. Here, tightening includes binding, clamping, pulling, pressing, etc., as long as the inner diameter of the brake ring composed of the brake elements can be reduced, so that it can generate friction braking with the motor shaft inserted in the brake ring. Just move the effect.
在该实施方式中，箍束器并不沿周向缠绕制动元件的整个外周面，而是仅作用在由制动元件组成的制动装置的周向面的部分区域内。由此在更换箍束器时，可先更换其中一个箍束器，再更换另一个箍束器。由此确保在更换箍束器的过程中，两个制动元件始可终套设在马达轴上，而不会松散地掉落。In this embodiment, the band does not wrap around the entire outer circumferential surface of the braking element in the circumferential direction, but only acts on a partial area of the circumferential surface of the braking device consisting of the braking element. Therefore, when replacing the clamps, one of the clamps can be replaced first, and then the other clamp can be replaced. This ensures that when changing the clamp, the two braking elements are always placed on the motor shaft without falling loose.
在一种实施方式中，所述多个制动元件在其相互对接的接口处分别向外突伸地、优选沿径向向外突伸地成型有耳轴半部，相互对接的每两个耳轴半部组合成一个完整的耳轴，以供所述箍束器卡箍其上并将所述多个制动元件相互束紧。In one embodiment, the plurality of braking elements are respectively formed with trunnion halves protruding outwards, preferably protruding radially outwards, at their mutually butting interfaces, and each two mutually butting joints are formed with trunnion halves. The trunnion halves are combined into a complete trunnion for the clamp to clamp on and tighten the plurality of braking elements to each other.
在该实施方式中优选地，所述耳轴能够***致动器壳体的凹槽中，从而固定制动装置。由此，耳轴不仅构造用于卡箍器的固持，而且还实现了对制动装置相对于致动器壳体的固定。Preferably in this embodiment the trunnion is insertable into a groove in the actuator housing, thereby fixing the braking device. The trunnion is thereby designed not only for retaining the clamp but also for fixing the braking device relative to the actuator housing.
在该实施方式中优选地，设置有两个制动元件，更优选地设置两个基本上相同设计的制动元件。在具有两个基本上设计相同的制动元件的实施方式中，有利地减少所需制造的零件类型，从而进一步降低了制造成本。然而也可以考虑设计不同的制动元件，其中，可以更灵活地适应制动装置的使用场合。In this embodiment preferably two brake elements are provided, more preferably two brake elements of essentially identical design are provided. In an embodiment with two braking elements of essentially identical design, the type of parts that need to be manufactured is advantageously reduced, thereby further reducing manufacturing costs. However, it is also conceivable to design different braking elements, in which case the application situations of the braking device can be adapted more flexibly.
在另一种实施方式中，所述多个制动元件在一端借助铰链枢转连接，并且在另一端借助箍束器连接，其中，所述箍束器以其一端与其中一个制动元件卡锁连接，并且以其另一端与另一个制动元件卡锁连接。In another embodiment, the plurality of braking elements are pivotally connected at one end by means of a hinge and at the other end by means of a clamp, wherein one end of the clamp is engaged with one of the braking elements. The lock is connected and the other end is snap-locked with another braking element.
在该实施方式中，所述箍束器、优选蛇簧仅在小于180°的角度范围内、优选在小于120°的角度范围内、进一步优选在小于90°的角度范围内、最优选地在小于60°的角度范围内围绕所述内孔地布设在所述刹车环上。In this embodiment, the clamp, preferably the snake spring, is only within an angular range of less than 180°, preferably within an angular range of less than 120°, further preferably within an angular range of less than 90°, most preferably within It is arranged on the brake ring around the inner hole within an angular range of less than 60°.
在该实施方式中优选地，设置有两个制动元件，更优选地设置两个基本上相同设计的制动元件。In this embodiment preferably two brake elements are provided, more preferably two brake elements of essentially identical design are provided.
在再一种实施方式中，箍束器布置在所述内孔之外，且优选地布设在垂 直于马达轴纵轴线的平面中。In yet another embodiment, the clamp is arranged outside said inner bore, preferably in a plane perpendicular to the longitudinal axis of the motor shaft.
在根据本发明的制动装置中，所述箍束器可通过螺旋弹簧、扭簧、U型的弹性卡箍片、蛇簧或拉簧构成。In the braking device according to the present invention, the clamp may be composed of a coil spring, a torsion spring, a U-shaped elastic clamp piece, a snake spring or a tension spring.
在所述箍束器上构造有卡锁结构，所述卡锁结构能够与构造在制动元件、优选耳轴上的配合卡锁结构形成卡锁连接。A latching structure is formed on the clamp, which can form a latching connection with a cooperating latching structure formed on the braking element, preferably the trunnion.
在箍束器构造为扭簧的实施方式中，扭簧分别套插相邻两个制动元件的每两个相互贴紧的耳轴上，从而将多个制动元件束紧。In an embodiment in which the restraint is configured as a torsion spring, the torsion spring is inserted into each two trunnions of two adjacent braking elements that are in close contact with each other, thereby tightening the plurality of braking elements.
在箍束器构造为弹性卡箍片的实施方式中，在弹性卡箍片上构造有卡锁结构，所述卡锁结构能够与构造在耳轴上的配合卡锁结构形成卡锁连接，其中，弹性卡箍片优选具有U形的横截面，在此情况下，所述卡锁结构优选为构造为成型在所述弹性卡箍片的U形臂上的向内突伸的凸点，而所述配合卡锁结构则构造为成型在耳轴上的与所述凸点相适配的凹陷。借助凸点与凹陷的配合作用实现弹性卡箍片与制动元件的卡锁连接。In an embodiment in which the clamp is configured as an elastic clamp piece, a locking structure is configured on the elastic clamp piece, and the locking structure can form a locking connection with a matching locking structure formed on the trunnion, wherein, The elastic clamp piece preferably has a U-shaped cross section. In this case, the locking structure is preferably configured as an inwardly protruding protrusion formed on the U-shaped arm of the elastic clamp piece. The matching locking structure is configured as a recess formed on the trunnion that matches the protrusion. The locking connection between the elastic clamp piece and the braking element is achieved through the cooperation of the protrusions and recesses.
在箍束器构造为蛇簧的实施方式中，所述蛇簧具有多个沿所述内孔圆周向延伸的周向部段和多个分别将所述周向部段相互联接的轴向部段或径向部段，由此形成蛇簧“之字形”的蛇形走向。可选地，也可以采用其他形式的异型弹簧。In an embodiment in which the clamp is configured as a snake spring, the snake spring has a plurality of circumferential sections extending along the circumference of the inner bore and a plurality of axial sections or radial sections respectively interconnecting the circumferential sections. sections, thus forming the "zigzag" serpentine direction of the snake spring. Optionally, other forms of special-shaped springs can also be used.
在该实施方式中，蛇簧可通过其自身蜿蜒延伸的蛇形造型构成多个凹槽，从而能够便捷地与制动元件形成卡锁连接，由此提供了更为简便的安装和更换。In this embodiment, the snake spring can form a plurality of grooves through its own meandering and extending serpentine shape, so that it can easily form a locking connection with the braking element, thereby providing easier installation and replacement.
在该实施方式中优选地，在制动元件上构造有肋片状的凸起，所述凸起能够与蛇簧相互卡锁连接。优选地，所述凸起在制动元件的端面上从内孔开始沿径向向外延伸。蛇簧的蛇形弯折部构成凹槽，所述凹槽能够与制动元件的凸起相互卡锁。通过该方式，能够方便地更换不同规格的蛇簧，以根据需要调整施加在马达轴上的制动力。作为备选，也可以采用其他类型的凸起，例如圆柱形的凸起，只要其能够与异型弹簧、优选蛇簧构成卡锁连接即可。In this embodiment, rib-like projections are preferably formed on the braking element, which projections can be connected to each other in a latching manner with the snake spring. Preferably, the protrusion extends radially outward from the inner bore on the end face of the braking element. The serpentine bending portion of the snake spring forms a groove, which can interlock with the protrusion of the braking element. In this way, snake springs of different specifications can be easily replaced to adjust the braking force exerted on the motor shaft as needed. As an alternative, other types of protrusions can also be used, such as cylindrical protrusions, as long as they can form a latching connection with a special-shaped spring, preferably a snake spring.
在箍束器构造为拉簧的实施方式中，优选设置两个拉簧，每个拉簧均以其一端与其中一个制动元件连接，并且以其另一端与另一个制动元件连接，其中，拉簧与制动元件的连接可通过形状配合的卡锁连接实现。In an embodiment in which the restraint is configured as a tension spring, two tension springs are preferably provided, each tension spring being connected with one end to one of the braking elements and with the other end to the other braking element, wherein , the connection between the tension spring and the braking element can be realized through a form-fitting locking connection.
优选地，在每个制动元件朝向外的端面上分别构造有销轴，拉簧以其端部卡锁在所述销轴上，从而将两个制动元件相互拉紧。在该实施方式中，两个 拉簧相互平行地布置，并且每个拉簧的布置方向与制动元件相互靠近的移动方向平行。Preferably, a pin is configured on the outward-facing end face of each braking element, and the end of the tension spring is locked on the pin, thereby tightening the two braking elements against each other. In this embodiment, the two tension springs are arranged parallel to each other, and the arrangement direction of each tension spring is parallel to the direction of movement of the braking element towards each other.
为解决所述技术问题，本发明还提供一种用于电驱动致动器的制动装置，其包括一体式构造的制动元件和使所述制动元件收缩的箍束器，其中，所述制动元件构造为C形的刹车环，所述刹车环的内部弧面构成大体环形的内孔，电驱动致动器的马达轴穿过C形刹车环的内孔，其中，在C形的刹车环的两个自由端部上分别构造有两个大体沿径向向外延伸的接片，带头栓钉穿过两个接片上的穿孔，所述箍束器穿套在带头栓钉上，并沿栓杆方向分别抵靠在栓钉头部与靠近栓钉头部的一个接片上，在带头栓钉的远离其头部的自由端一侧设有挡圈，在电驱动致动器的马达轴穿过C形刹车环的内孔的情况下，该挡圈借助箍束器的弹力被止挡压靠在远离栓钉头部的另一个接片上，借助箍束器的弹性预紧使刹车环收缩抱紧在马达轴上，使得所述构成所述内孔的所述内部弧面与马达轴之间形成摩擦，从而实现制动作用。In order to solve the technical problem, the present invention also provides a braking device for an electrically driven actuator, which includes an integrally constructed braking element and a restraint that contracts the braking element, wherein the The braking element is configured as a C-shaped brake ring. The internal arc surface of the brake ring forms a generally annular inner hole. The motor shaft of the electric drive actuator passes through the inner hole of the C-shaped brake ring, wherein in the C-shaped The two free ends of the brake ring are respectively configured with two tabs extending generally radially outward, and the headed pegs pass through the holes on the two tabs, and the binding device is inserted into the headed pegs. , and respectively abut against the head of the bolt and a tab close to the head of the bolt along the direction of the bolt. A retaining ring is provided on the side of the free end of the headed bolt away from its head, and the electrically driven actuator When the motor shaft passes through the inner hole of the C-shaped brake ring, the retaining ring is pressed against another tab away from the head of the bolt by the elastic force of the clamp, and is pre-tightened by the elastic force of the clamp The brake ring is contracted and hugged tightly on the motor shaft, so that friction is formed between the internal arc surface constituting the inner hole and the motor shaft, thereby achieving a braking effect.
在该实施方式中优选地，所述箍束器通过压簧构成。In this embodiment, preferably, the clamp is formed by a compression spring.
在该实施方式中优选地，所述带头栓钉能够***致动器壳体的凹槽中，从而固定制动装置。Preferably in this embodiment the headed peg is insertable into a groove in the actuator housing, thereby securing the braking device.
在该实施方式中优选地，在无压簧作用时的松弛状态下，所述制动元件的内径大于马达轴的外径。此时，制动元件虽然也套设在马达轴上，然而却并不与马达轴形成足以施加制动力的摩擦接触。只有当借助压簧的预紧力使得制动元件径向收缩时，制动元件才与马达轴形成摩擦接触，从而向马达轴施加制动力。In this embodiment, preferably, in the relaxed state without the action of the compression spring, the inner diameter of the braking element is larger than the outer diameter of the motor shaft. At this time, although the braking element is also sleeved on the motor shaft, it does not form sufficient frictional contact with the motor shaft to apply braking force. Only when the braking element contracts radially due to the pretightening force of the compression spring, does the braking element form frictional contact with the motor shaft, thereby applying a braking force to the motor shaft.
在根据本发明的制动装置中，制动元件上的限制机构与致动器壳体上的互补的对应限制机构相互配合，从而限制制动装置的旋转。In a braking device according to the invention, a limiting mechanism on the braking element cooperates with a complementary corresponding limiting mechanism on the actuator housing, thereby limiting the rotation of the braking device.
对此优选地，所述限制机构由构造在制动元件上的向外延伸的凸起部分、例如制动元件的耳轴或接片或额外构造在制动元件上的凸起构成，所述耳轴或接片或凸起能够***致动器壳体的凹槽中。For this purpose, the limiting means are preferably formed by outwardly extending projections formed on the braking element, for example trunnions or webs of the braking element or projections additionally formed on the braking element, said Trunnions or tabs or projections can be inserted into grooves in the actuator housing.
作为备选或补充，还可以在制动元件上额外地构造有凹槽或间隙、例如两个接片之间的间隙，而且相应地在致动器壳体上构造有凸起。通过所述凹槽和凸起的配合作用同样实现了对制动装置的固定。这能够灵活且可靠地确保在马达轴旋转过程中制动装置相对于致动器壳体保持固定，进而确保可靠的制动效果。此外，构造在制动元件上的凹槽还节约了用于制动元件的物料，实 现成本优势。As an alternative or in addition, grooves or gaps, for example a gap between two webs, can also be additionally formed on the braking element, and accordingly projections can be formed on the actuator housing. The braking device is also fixed through the cooperation of the groove and the protrusion. This flexibly and reliably ensures that the braking device remains fixed relative to the actuator housing during rotation of the motor shaft, thus ensuring a reliable braking effect. In addition, the grooves formed in the brake element save material for the brake element, resulting in cost advantages.
作为备选或补充，所述限制机构由所述制动元件本身非圆形的、优选矩形的外轮廓。在该实施方式中，制动元件、进而由制动元件所构成的刹车环具有矩形的外轮廓，能够嵌合在驱动器壳体上的凹槽，从而在无需其他额外止挡机构的情况下实现对制动装置的固定，由此使得制动装置在马达轴旋转时不随之共同转动。作为备选，制动元件也可以具有其他非圆形的外轮廓。Alternatively or additionally, the limiting means can consist of a non-circular, preferably rectangular outer contour of the braking element itself. In this embodiment, the braking element, and thus the braking ring formed by the braking element, has a rectangular outer contour, which can fit into a groove on the driver housing, so that no additional stop mechanism is required. The braking device is fixed so that the braking device does not rotate together with the rotation of the motor shaft. As an alternative, the braking element can also have other non-circular outer contours.
根据本发明的另一个方面，为解决所述技术问题，还提供了一种电驱动致动器，其中，所述电驱动致动器具有根据上述制动装置。According to another aspect of the present invention, in order to solve the technical problem, an electric drive actuator is also provided, wherein the electric drive actuator has a braking device according to the above.
根据本发明的另一个方面，为解决所述技术问题，还提供了一种具有上述电驱动致动器的电动家具、例如电动沙发、电动座椅、电动床具、电动桌等。According to another aspect of the present invention, in order to solve the technical problem, an electric furniture, such as an electric sofa, an electric seat, an electric bed, an electric table, etc., having the above-mentioned electric drive actuator is also provided.
附图说明Description of drawings
以下借助附图详细阐述根据本发明的用于电驱动致动器的制动装置和相应的电驱动致动器。The braking device according to the invention for an electrically driven actuator and the corresponding electrically driven actuator are explained in detail below with reference to the drawings.
图1至图3a示例性地示出根据本发明的制动装置的第一实施方式的示意图；1 to 3 a schematically illustrate a first embodiment of a braking device according to the invention;
图3b示例性地示出根据本发明的制动装置的第一实施方式的一种变型方案的示意图；FIG. 3 b schematically shows a schematic diagram of a variant of the first embodiment of the braking device according to the invention;
图4示出根据本发明的制动装置的第一实施方式的一种优选的改进方案的示意图；Figure 4 shows a schematic diagram of a preferred modification of the first embodiment of the braking device according to the invention;
图5示出根据本发明的制动装置的第一实施方式的另一种优选的改进方案的示意图；Figure 5 shows a schematic diagram of another preferred improvement of the first embodiment of the braking device according to the invention;
图6示出根据图4或图5所示的制动装置中的箍束器的示意性细节图；FIG. 6 shows a schematic detail of the restraint in the braking device according to FIG. 4 or FIG. 5 ;
图7至图10示例性地示出根据本发明的制动装置的第二实施方式的示意图；Figures 7 to 10 exemplarily show schematic diagrams of a second embodiment of a braking device according to the invention;
图11和图12示例性地示出根据本发明的制动装置的第二实施方式的两种变型方案的示意图；11 and 12 schematically show schematic diagrams of two variants of a second embodiment of a braking device according to the invention;
图13和图14示例性地示出根据本发明的制动装置的第三实施方式的示意图；Figures 13 and 14 exemplarily show schematic views of a third embodiment of a braking device according to the invention;
图15至图17示例性地示出根据本发明的制动装置的第四实施方式的示意图；Figures 15 to 17 exemplarily show schematic views of a fourth embodiment of a braking device according to the invention;
图18示出根据本发明的制动装置的第四实施方式的一种优选的改进方案的示意图。Figure 18 shows a schematic diagram of a preferred modification of the fourth embodiment of the braking device according to the invention.
具体实施方式Detailed ways
首先参照图1至图3a示例性地示出一种用于电驱动致动器2的制动装置1的第一实施方式，其中，所述电驱动致动器2优选是线性马达。First, a first embodiment of a braking device 1 for an electrically driven actuator 2 is shown by way of example with reference to FIGS. 1 to 3 a , wherein the electrically driven actuator 2 is preferably a linear motor.
如图1所示，马达轴21从致动器壳体的端面向外突伸，在致动器壳体的端面上设置有制动装置1。如图1和图2所示，所述制动装置1包括两个设计相同的制动元件11a和将这两个制动元件11a相互束紧的箍束器12。在该实施方式中，所述箍束器构造为扭簧12a。所述两个制动元件11a分别具有内部弧面111，并能够借助所述箍束器、也即扭簧12a共同组成具有一个基本环形的内孔的刹车环，电驱动致动器2的马达轴21穿过所述内孔。借助所述扭簧11a将所述两个制动元件相互束紧，使得构成所述内孔的所述内部弧面111与马达轴21之间形成摩擦，从而实现制动作用。As shown in FIG. 1 , the motor shaft 21 protrudes outward from the end surface of the actuator housing, and the braking device 1 is provided on the end surface of the actuator housing. As shown in Figures 1 and 2, the braking device 1 includes two braking elements 11a of the same design and a restraint 12 that tightens the two braking elements 11a to each other. In this embodiment, the clamp is designed as a torsion spring 12a. The two braking elements 11a each have an internal arc surface 111, and can jointly form a braking ring with a substantially annular inner hole by means of the restrainer, that is, the torsion spring 12a, to electrically drive the motor of the actuator 2 The shaft 21 passes through the inner hole. The two braking elements are tightened with each other by means of the torsion spring 11a, so that friction is formed between the internal arc surface 111 constituting the inner hole and the motor shaft 21, thereby achieving a braking effect.
在该实施方式中，如图3a所示，所述两个制动元件11a在其相互对接的接口处分别径向向外突伸地成型有一对对置的耳轴半部112，相互对接的每两个耳轴半部112组合成一个完整的耳轴，以供所述扭簧12a卡箍其上并将两个制动元件11a相互束紧。In this embodiment, as shown in Figure 3a, the two braking elements 11a are respectively formed with a pair of opposing trunnion halves 112 protruding radially outward at their mutually butted interfaces. Each two trunnion halves 112 are combined to form a complete trunnion for the torsion spring 12a to clamp on and to tighten the two braking elements 11a with each other.
在制动元件11a上，优选如图1所示，在制动元件11a的中部还构造有沿径向向外延伸的凸耳状的凸起113，所述凸起113能够***图中未示出的致动器壳体的凹槽中，从而固定制动装置，使其在马达轴旋转式不随之共同旋转，而是能够相对于致动器壳体保持固定，从而实现对马达轴的摩擦制动效果。此外，耳轴112同样也能够***图中未示出的致动器壳体的凹槽中，从而固定制动装置。On the braking element 11a, preferably as shown in Figure 1, a lug-shaped protrusion 113 extending radially outward is also configured in the middle of the braking element 11a. The protrusion 113 can be inserted into the braking element 11a (not shown in the figure). In the groove of the actuator housing, the braking device is fixed so that it does not rotate together with the rotation of the motor shaft, but can remain fixed relative to the actuator housing, thereby achieving friction on the motor shaft. braking effect. Furthermore, the trunnion 112 can also be inserted into a recess of the actuator housing (not shown in the figures), thereby fixing the braking device.
图3b示出第一实施方式的一种变型方案。与图1至图3a所示不同，图3b所示的制动装置1包括三个设计相同的制动元件11a’和将这三个制动元件11a’相互束紧的箍束器12。在该变型方案中，所述箍束器也构造为扭簧12a。如图3b所示，每个制动元件11a’在其相互对接的接口处分别径向向外突伸地成型有一对对置的耳轴半部112’，相互对接的每两个耳轴半部112’组合成一个完整的耳轴，以供所述扭簧12a卡箍其上并将两个制动元件11a’相互束紧。Figure 3b shows a variant of the first embodiment. Different from what is shown in Figures 1 to 3a, the braking device 1 shown in Figure 3b includes three braking elements 11a' of the same design and a restraint 12 that binds the three braking elements 11a' to each other. In this variant, the clamp is also designed as a torsion spring 12a. As shown in Figure 3b, each braking element 11a' is formed with a pair of opposing trunnion halves 112' protruding radially outward at the mutually butted interfaces. Each two trunnion halves butt mutually. The portion 112' is combined into a complete trunnion for the torsion spring 12a to clamp on and tighten the two braking elements 11a' to each other.
在该变型方案中，每个制动元件11a’分别设计为以120°延伸的圆弧件。 然而，制动元件也可以设计为多个在不同角度上延伸的构件，只要其能够组成具有内孔的刹车环即可。In this variant, each braking element 11a' is designed as a circular arc extending at 120°. However, the brake element can also be designed as a plurality of components extending at different angles, as long as they form a brake ring with an inner bore.
图4示出第一实施方式的一种优选的改进方案，其中，弹性卡箍片12a’被用作箍束器。在该改进方案中，所述两个制动元件11a同样在其相互对接的接口处分别径向向外突伸地成型有一对对置的耳轴半部112，相互对接的每两个耳轴半部112组合成一个完整的耳轴，以供所述弹性卡箍片12a’卡箍其上并将两个制动元件11a相互束紧。Figure 4 shows a preferred modification of the first embodiment, in which an elastic clamp piece 12a' is used as a clamp. In this improvement, the two braking elements 11a are also respectively formed with a pair of opposing trunnion halves 112 protruding radially outward at their mutually butting interfaces. Each two trunnion halves 112 butting with each other are formed. The half parts 112 are combined into a complete trunnion for the elastic clamping piece 12a' to clamp on and tighten the two braking elements 11a to each other.
图5示出第一实施方式的另一种优选的改进方案，其中通过使用弹性卡箍片12a’作为箍束器。不同于图4所示的改进方案，根据图5所示的制动元件11a不具有沿其径向向外延伸的凸耳状的凸起。在该改进方案中，仅借助耳轴半部112或者说由其组成的耳轴与致动器壳体的凹槽的形状配合的卡锁，实现对制动装置的固定。Figure 5 shows another preferred modification of the first embodiment by using an elastic clamp piece 12a' as a clamp. In contrast to the development shown in FIG. 4 , the braking element 11 a according to FIG. 5 does not have lug-like projections extending radially outwards thereof. In this development, the braking device is secured solely by means of a form-fitting latching of the trunnion half 112 or the trunnion formed therein with the recess of the actuator housing.
图6示出图4或图5所示制动装置中的箍束器的细节图。如图所示，弹性卡箍片12a’构造为U形臂的形式，在其U形臂上构造有卡锁结构。在图6所示的实施方式中，所述卡锁结构构造为从U形臂向内突伸的凸点121，所述凸点121与图中未示出的构造在耳轴112外侧上的呈凹槽形式的配合卡锁结构形成卡锁连接，从而进一步确保弹性卡箍片12a’在制动元件上的防脱落的固持。FIG. 6 shows a detail of the restraint in the braking device shown in FIG. 4 or 5 . As shown in the figure, the elastic clamp piece 12a' is configured in the form of a U-shaped arm, and a locking structure is configured on the U-shaped arm. In the embodiment shown in FIG. 6 , the locking structure is configured as a protruding point 121 protruding inwardly from the U-shaped arm. The protruding point 121 is connected with a not-shown structure on the outside of the trunnion 112 . The matching locking structure in the form of a groove forms a locking connection, thereby further ensuring that the elastic clamp piece 12a' is held on the braking element to prevent it from falling off.
图7至图10示意性示出根据本发明的制动装置的第二实施方式的示意图。7 to 10 schematically illustrate a second embodiment of a braking device according to the invention.
如图7所示，马达轴21从致动器壳体的端面向外突伸，在致动器壳体的端面上设置有制动装置1。如图8和图9所示，所述制动装置1包括两个基本上相同设计的、优选基本上镜像设计的制动元件11b和将这两个制动元件11b相互束紧的箍束器。在该实施方式中，所述箍束器构造为蛇簧12b。蛇簧具有多个沿所述内孔圆周向延伸的周向部段和多个分别将所述周向部段相互联接的轴向部段或径向部段，由此形成蛇簧“之字形”的蛇形走向。所述两个制动元件11b分别具有内部弧面111，并能够借助所述蛇簧12b共同组成具有一个基本环形的内孔的刹车环，电驱动致动器2的马达轴21穿过所述内孔。As shown in FIG. 7 , the motor shaft 21 protrudes outward from the end surface of the actuator housing, and the braking device 1 is provided on the end surface of the actuator housing. As shown in Figures 8 and 9, the braking device 1 includes two braking elements 11b of substantially the same design, preferably substantially mirror-image design, and a restraint that tightens the two braking elements 11b with each other. . In this embodiment, the clamp is configured as a serpentine spring 12b. The snake spring has a plurality of circumferential sections extending along the circumferential direction of the inner hole and a plurality of axial sections or radial sections respectively connecting the circumferential sections to each other, thereby forming a "zigzag" serpentine shape of the snake spring. towards. The two brake elements 11b each have an internal arc surface 111, and can jointly form a brake ring with a substantially annular inner hole by means of the snake spring 12b, through which the motor shaft 21 of the electric drive actuator 2 passes. Bore.
如图8和图9所示，在制动元件11b上构造有肋片状的凸起115，所述凸起115在制动元件的端面上从内孔开始沿径向向外且轴线向外延伸。所述两个制动元件11b在一端借助铰链114枢转连接，并且在另一端借助蛇簧12b 连接，其中，蛇簧12b的蛇形弯折部构成凹槽，所述凹槽能够与制动元件的凸耳状的凸起115相互卡锁。蛇簧12b以其一端与其中一个制动元件11b上的凸耳状的凸起115卡固连接，并且以其另一端与另一个制动元件11b上的凸耳状的凸起115卡固连接，使得构成所述内孔的所述内部弧面与马达轴之间形成摩擦，从而实现制动作用。As shown in FIGS. 8 and 9 , rib-shaped protrusions 115 are formed on the brake element 11 b , which protrusions 115 are radially outward starting from the inner hole and axially outward on the end face of the brake element. extend. The two braking elements 11b are pivotally connected at one end by means of a hinge 114 and at the other end by means of a snake spring 12b, wherein the serpentine bend of the snake spring 12b forms a groove, which can be connected with the brake. The lug-like projections 115 of the elements snap into each other. One end of the snake spring 12b is snap-connected to the lug-shaped protrusion 115 on one of the braking elements 11b, and the other end of the snake spring 12b is snap-connected to the lug-shaped protrusion 115 on the other braking element 11b. , so that friction is formed between the internal arc surface constituting the inner hole and the motor shaft, thereby achieving a braking effect.
此外，所述凸耳状的凸起115还能够与图中未示出的构造在致动器壳体上的凹槽配合作用，优选***凹槽中，从而固定制动装置。In addition, the lug-like projections 115 can cooperate with grooves (not shown in the figures) formed on the actuator housing and are preferably inserted into the grooves, thereby fixing the braking device.
蛇簧仅在部分圆弧角范围内、优选小于180°的圆弧角范围内、进一步优选在小于120°的圆弧角范围内、特别优选在小于90°的圆弧角范围内围绕所述内孔地布设在所述刹车环上。如图9所示，蛇簧在小于90°的圆弧角范围内围绕所述内孔地布置。The snake spring only surrounds the arc angle within a partial arc angle range, preferably within an arc angle range of less than 180°, further preferably within an arc angle range of less than 120°, particularly preferably within an arc angle range of less than 90°. The inner hole is arranged on the brake ring. As shown in Figure 9, the snake spring is arranged around the inner hole within an arc angle range of less than 90°.
根据该实施方式，优选还额外地在制动元件上还构造有凹空116。如图10所示，在制动元件11b的相互对接的接口处构造有凹空116，从而在制动元件组合成刹车环后使凹空贯通。该凹空116不仅有利于材料节省，而且能够与图中未示出的致动器壳体的相应的凸起配合作用，额外地实现对制动装置的固定。According to this embodiment, a recess 116 is preferably also formed on the braking element. As shown in FIG. 10 , recesses 116 are formed at the mutually abutting interfaces of the braking elements 11 b so that the recesses are penetrated after the braking elements are combined into a brake ring. This recess 116 is not only beneficial to material saving, but can also cooperate with corresponding protrusions of the actuator housing (not shown in the figure) to additionally secure the braking device.
图11示出根据本发明的制动装置的第二实施方式的一种变型方案。在该变型方案中，两个制动元件11b在一端借助铰链枢转连接，在另一端在其相互对接的接口处分别构造有一个耳轴半部112，相互对接的两个耳轴半部112组合成一个完整的耳轴，以供弹性卡箍片12a’卡箍其上并将两个制动元件11b相互束紧。FIG. 11 shows a variant of the second embodiment of the braking device according to the invention. In this variant, the two braking elements 11 b are pivotally connected at one end by means of a hinge, and at the other end a trunnion half 112 is respectively formed at their butting interface. The two butting trunnion halves 112 are It is combined into a complete trunnion for the elastic clamping piece 12a' to clamp on it and tighten the two braking elements 11b with each other.
图12示出根据本发明的制动装置的第二实施方式的另一种变型方案。在该变型方案中，在制动元件11b上构造有销轴状的凸起115’。所述两个制动元件11b在一端借助铰链114枢转连接，并且在另一端借助与凸起115’卡锁的拉簧12c连接并拉紧。FIG. 12 shows a further variant of the second embodiment of the braking device according to the invention. In this variant, a pin-like projection 115' is formed on the braking element 11b. The two braking elements 11b are pivotally connected at one end by means of a hinge 114, and are connected and tightened at the other end by means of a tension spring 12c locked with the protrusion 115'.
图13和图14示例性地示出根据本发明的制动装置的第三实施方式的示意图。13 and 14 illustrate schematic diagrams of a third embodiment of a braking device according to the invention.
如图13所示，马达轴21从致动器壳体的端面向外突伸，在致动器壳体的端面上设置有制动装置1。如图14所示，所述制动装置1包括两个相同设计的制动元件11c和将这两个制动元件11c相互束紧的箍束器。在该实施方式中，所述箍束器构造为拉簧12c。所述两个制动元件11c分别具有内部弧面， 并能够借助拉簧12c共同组成具有一个基本环形的内孔的刹车环，电驱动致动器2的马达轴21穿过所述内孔。As shown in Figure 13, the motor shaft 21 protrudes outward from the end surface of the actuator housing, and the braking device 1 is provided on the end surface of the actuator housing. As shown in Figure 14, the braking device 1 includes two braking elements 11c of the same design and a restraint that tightens the two braking elements 11c with each other. In this embodiment, the clamp is configured as a tension spring 12c. The two braking elements 11c each have an internal arc surface, and can jointly form a braking ring with a substantially annular inner hole by means of a tension spring 12c, through which the motor shaft 21 of the electric drive actuator 2 passes.
如图13和图14所示，在该实施方式中设置两个拉簧12c，所述拉簧12c设置在所述内孔之外，优选与两个制动元件11c的组合方向平行地布设在垂直于马达轴21的纵轴线的平面中。如图14所示，在拉簧12c的端部上分别构造有设计为钩件122的卡锁结构，在制动元件11c的面朝外的端面上分别构造设计为销轴117的配合卡锁结构。每个拉簧12c以其一个端部上的钩件122与其中一个制动元件11c上的销轴117卡锁连接，并且以其另一个端部上的钩件122与另一个制动元件11c上的销轴117卡锁连接，从而使两个拉簧12c的布置方向与制动元件11c相互靠近的移动方向平行。借助所述拉簧12c将所述两个制动元件11c相互束紧，使得构成所述内孔的内部弧面与马达轴21之间形成摩擦，从而实现制动作用。As shown in Figures 13 and 14, in this embodiment, two tension springs 12c are provided. The tension springs 12c are arranged outside the inner hole, and are preferably arranged parallel to the combination direction of the two braking elements 11c. in a plane perpendicular to the longitudinal axis of the motor shaft 21 . As shown in FIG. 14 , a latching structure designed as a hook 122 is respectively formed on the end of the tension spring 12 c, and a matching latching structure designed as a pin 117 is formed on the outward-facing end surface of the braking element 11 c. structure. Each tension spring 12c is latchingly connected with the pin 117 on one of the braking elements 11c with the hook 122 at one end, and is connected with the other braking element 11c with the hook 122 at the other end. The pins 117 on the two tension springs 117 are locked and connected, so that the arrangement direction of the two tension springs 12c is parallel to the moving direction of the braking element 11c approaching each other. The two braking elements 11c are tightened with each other by means of the tension spring 12c, so that friction is formed between the internal arc surface constituting the inner hole and the motor shaft 21, thereby achieving a braking effect.
如图13所示优选地，制动元件11c分别具有基本上矩形的形状，从而使由两个制动元件11c组合成的刹车环也具有基本上矩形的外轮廓，其能够嵌合在图中未示出的驱动器壳体上的凹槽中，从而在无需其他额外止挡机构的情况下实现对制动装置的固定，由此使得制动装置在马达轴旋转时不随之共同转动。当然也可以考虑其他非圆形的外轮廓，例如三角形或其他多边形。As shown in Figure 13, preferably, the braking elements 11c each have a substantially rectangular shape, so that the brake ring composed of two braking elements 11c also has a substantially rectangular outer contour, which can fit in the figure. In a groove on the driver housing (not shown), the braking device is fixed without the need for other additional stop mechanisms, so that the braking device does not rotate together when the motor shaft rotates. Of course, other non-circular outer contours, such as triangles or other polygons, can also be considered.
图15至图18示例性地示出根据本发明的制动装置的第四实施方式的示意图。15 to 18 illustrate schematic diagrams of a fourth embodiment of a braking device according to the invention.
如图15所示，马达轴21从致动器壳体的端面向外突伸，在致动器壳体的端面上设置有制动装置1。如图15和图16所示，所述制动装置1包括一体式构造的制动元件11d和使该制动元件11d收缩的箍束器。As shown in Figure 15, the motor shaft 21 protrudes outward from the end surface of the actuator housing, and the braking device 1 is provided on the end surface of the actuator housing. As shown in FIGS. 15 and 16 , the braking device 1 includes an integrally constructed braking element 11 d and a clamp that contracts the braking element 11 d.
如图16所示，在该实施方式中，所述制动元件11d构造为C形的刹车环，所述刹车环的内部弧面111构成大体环形的内孔，电驱动致动器的马达轴21穿过C形刹车环的内孔。在C形的刹车环的两个自由端部上分别构造有两个大体沿径向向外延伸的接片118，即在此实施方式中称为第一接片118a和第二接片118b。如图17所示，带头栓钉13穿过两个接片118上的穿孔。在该实施方式中构造为压簧12d的箍束器穿套在带头栓钉13上，并沿栓杆方向分别抵靠在栓钉头部131与靠近栓钉头部131的第一接片118a上，在带头栓钉13的远离其栓钉头部131的自由端一侧设有挡圈14，该挡圈14借助压簧12d的弹力被止挡压靠在远离栓钉头部131的第二接片118b上。借助压簧 12d的弹性预紧使刹车环收缩抱紧在马达轴21上，使得所述构成所述内孔的所述内部弧面与马达轴21之间形成摩擦，从而实现制动作用。As shown in Figure 16, in this embodiment, the braking element 11d is configured as a C-shaped brake ring, the inner arc surface 111 of the brake ring forms a generally annular inner hole, and the motor shaft of the electrically driven actuator 21 passes through the inner hole of the C-shaped brake ring. Two webs 118 extending generally radially outwards are respectively formed on the two free ends of the C-shaped brake ring, which in this embodiment are called first webs 118 a and second webs 118 b. As shown in FIG. 17 , the headed pegs 13 pass through the holes in the two tabs 118 . In this embodiment, the clamp configured as a compression spring 12d is inserted into the headed bolt 13 and respectively abuts against the bolt head 131 and the first tab 118a close to the bolt head 131 along the bolt shaft direction. On the side of the free end of the headed bolt 13 away from the bolt head 131, a retaining ring 14 is provided. The retaining ring 14 is stopped and pressed against the third end away from the bolt head 131 by means of the elastic force of the compression spring 12d. On the second connecting piece 118b. With the elastic preload of the compression spring 12d, the brake ring shrinks and hugs the motor shaft 21, so that friction is formed between the internal arc surface constituting the inner hole and the motor shaft 21, thereby realizing the braking effect.
在该实施方式中，在无压簧12d作用时的松弛状态下，所述制动元件11d的内径大于马达轴21的外径。此时，制动元件虽然也套设在马达轴上，然而却并不与马达轴形成足以施加制动力的摩擦接触。只有当借助压簧12d的预紧力使得制动元件径向收缩时，制动元件才与马达轴形成摩擦接触，从而向马达轴施加制动力。In this embodiment, in the relaxed state without the action of the compression spring 12d, the inner diameter of the braking element 11d is larger than the outer diameter of the motor shaft 21. At this time, although the braking element is also sleeved on the motor shaft, it does not form sufficient frictional contact with the motor shaft to apply braking force. Only when the braking element contracts radially due to the pre-tightening force of the compression spring 12d, the braking element comes into frictional contact with the motor shaft, thereby applying a braking force to the motor shaft.
在该实施方式中，所述带头栓钉13能够***图中未示出的致动器壳体的凹槽中，从而固定制动装置。此外，如图16所示，在制动元件11d上还构造有两个径向对置的沿径向向外延伸的凸起119，该凸起119能够***图中未示出的构造在致动器壳体上的凹槽中，从而固定制动装置。In this embodiment, the headed peg 13 can be inserted into a groove of the actuator housing, not shown in the figures, thereby fixing the braking device. In addition, as shown in FIG. 16 , two diametrically opposed protrusions 119 extending radially outward are also configured on the braking element 11d, and the protrusions 119 can be inserted into a structure not shown in the figure. into the groove on the actuator housing to secure the braking device.
图18示出根据本发明的制动装置的第四实施方式的一种优选的改进方案的示意图。图18所示改进方案与图16和图17的区别在于，制动元件11d不具有沿径向相互对置的沿径向向外延伸的凸起119。在该改进方案中，仅借助带头栓钉13***致动器壳体的凹槽中来固定制动装置。Figure 18 shows a schematic diagram of a preferred modification of the fourth embodiment of the braking device according to the invention. The modification shown in FIG. 18 differs from FIGS. 16 and 17 in that the braking element 11 d does not have radially opposite projections 119 extending radially outwards. In this development, the braking device is fixed solely by means of a headed bolt 13 inserted into a groove in the actuator housing.
附图标记清单List of reference signs
1制动装置1braking device
11a，11a’，11b，11c，11d制动元件11a, 11a’, 11b, 11c, 11d brake elements
111内部弧面111 internal cambered surface
112，112’耳轴半部112, 112’ trunnion half
113凸起113 bumps
114铰链114 hinge
115，115’凸起115, 115’ raised
116凹空116 hollow
117销轴117 pin
118接片118 connector
118a第一接片118a first splice
118b第二接片118b second connector
119凸起119 bump
12箍束器 12a扭簧12 clamp 12a torsion spring
12a’弹性卡箍片12b蛇簧12a’ elastic clamp piece 12b snake spring
12c拉簧12c tension spring
12d压簧12d compression spring
121凸点121 bumps
122钩件122 hook pieces
13带头栓钉131栓钉头部14挡圈。13 headed bolt 131 bolt head 14 retaining ring.

Claims (12)

  1. 一种用于电驱动致动器(2)的制动装置(1)，其包括：A braking device (1) for an electrically driven actuator (2), comprising:
    多个制动元件(11a；11a’；11b；11c)；和A plurality of braking elements (11a; 11a'; 11b; 11c); and
    将所述多个制动元件相互束紧的箍束器(12)，a clamp (12) for binding the plurality of braking elements to each other,
    其中，所述多个制动元件分别具有内部弧面(111)，并能够借助所述箍束器共同组成具有一个基本环形的内孔的刹车环，电驱动致动器的马达轴(21)穿过所述内孔，Wherein, the plurality of braking elements each have an internal arc surface (111), and can jointly form a braking ring with a substantially annular inner hole by means of the clamp, and the motor shaft (21) of the electric drive actuator through the inner hole,
    借助所述箍束器(12)将所述制动元件相互束紧，使得构成所述内孔的所述内部弧面与马达轴之间形成摩擦，从而实现制动作用，The braking elements are tightened to each other with the help of the clamp (12), so that friction is formed between the internal arc surface constituting the inner hole and the motor shaft, thereby achieving the braking effect,
    其中，相邻的两个制动元件(11a)在其相互对接的接口处分别向外突伸地成型有耳轴半部(112)，相互对接的每两个耳轴半部(112)组合成一个完整的耳轴，以供所述箍束器(12)卡箍其上并将多个制动元件(11a)相互束紧，优选地，设置两个制动元件。Among them, two adjacent braking elements (11a) are respectively formed with trunnion half parts (112) protruding outward at their mutually butted interfaces, and each two mutually butted trunnion half parts (112) are combined into a complete trunnion for the clamp (12) to clamp on and tighten the plurality of braking elements (11a) to each other. Preferably, two braking elements are provided.
  2. 一种用于电驱动致动器(2)的制动装置(1)，其包括：A braking device (1) for an electrically driven actuator (2), comprising:
    多个制动元件(11a；11a’；11b；11c)；和A plurality of braking elements (11a; 11a'; 11b; 11c); and
    将所述多个制动元件相互束紧的箍束器(12)，a clamp (12) for binding the plurality of braking elements to each other,
    其中，所述多个制动元件分别具有内部弧面(111)，并能够借助所述箍束器共同组成具有一个基本环形的内孔的刹车环，电驱动致动器的马达轴(21)穿过所述内孔，Wherein, the plurality of braking elements each have an internal arc surface (111), and can jointly form a braking ring with a substantially annular inner hole by means of the clamp, and the motor shaft (21) of the electric drive actuator through the inner hole,
    借助所述箍束器(12)将所述多个制动元件相互束紧，使得构成所述内孔的所述内部弧面与马达轴之间形成摩擦，从而实现制动作用，The plurality of braking elements are tightened to each other by means of the clamp (12), so that friction is formed between the internal arc surface constituting the inner hole and the motor shaft, thereby achieving a braking effect,
    其中，所述多个制动元件(11b)中的两个制动元件在一端借助铰链(114)枢转连接，并且在另一端借助箍束器(12)连接，其中，所述箍束器以其一端与其中一个制动元件(11b)卡锁连接，并且以其另一端与另一个制动元件(11b)卡锁连接，优选地，设置两个制动元件。Wherein, two of the plurality of braking elements (11b) are pivotally connected at one end by a hinge (114) and at the other end by a clamp (12), wherein the clamp One end is snap-fitted to one of the braking elements (11b), and the other end is snap-fitting to the other braking element (11b). Preferably, two braking elements are provided.
  3. 根据权利要求2所述的制动装置(1)，其特征在于，所述箍束器(12b)仅在小于180°的角度范围内、优选在小于120°的角度范围内、进一步优选在小于90°的角度范围内、最优选地在小于60°的角度范围内围绕所述内孔地布设在所述刹车环上。The braking device (1) according to claim 2, characterized in that the clamp (12b) is only within an angle range of less than 180°, preferably within an angle range of less than 120°, further preferably within an angle range of less than 180°. It is arranged on the brake ring around the inner bore in an angular range of 90°, most preferably in an angular range of less than 60°.
  4. 一种用于电驱动致动器(2)的制动装置(1)，其包括：A braking device (1) for an electrically driven actuator (2), comprising:
    两个基本上相同设计的制动元件(11a；11b；11c)；和Two brake elements (11a; 11b; 11c) of essentially identical design; and
    将这两个制动元件相互束紧的箍束器(12)，a clamp (12) that secures the two braking elements to each other,
    其中，所述两个制动元件分别具有内部弧面(111)，并能够借助所述箍束器共同组成具有一个基本环形的内孔的刹车环，电驱动致动器的马达轴(21)穿过所述内孔，Wherein, the two braking elements each have an internal arc surface (111), and can jointly form a braking ring with a substantially annular inner hole by means of the clamp, and the motor shaft (21) of the electric drive actuator through the inner hole,
    借助所述箍束器(12)将所述两个制动元件相互束紧，使得构成所述内孔的所述内部弧面与马达轴之间形成摩擦，从而实现制动作用，The two braking elements are tightened with each other by means of the clamp (12), so that friction is formed between the internal arc surface constituting the inner hole and the motor shaft, thereby achieving the braking effect,
    其中，箍束器(12)设置在所述内孔之外，并且优选布设在垂直于马达轴(21)纵轴线的平面中。The clamp (12) is arranged outside the inner bore and is preferably arranged in a plane perpendicular to the longitudinal axis of the motor shaft (21).
  5. 根据上述权利要求中任一项所述的制动装置(1)，其特征在于，所述箍束器(12)通过螺旋弹簧、扭簧(12a)、U型的弹性卡箍片(12a’)、蛇簧(12b)或拉簧(12c)构成。The braking device (1) according to any one of the above claims, characterized in that the clamp (12) adopts a coil spring, a torsion spring (12a), and a U-shaped elastic clamp piece (12a' ), snake spring (12b) or tension spring (12c).
  6. 根据上述权利要求中任一项所述的制动装置(1)，其特征在于，在所述箍束器(12)上构造有卡锁结构，所述卡锁结构能够与构造在制动元件、优选耳轴上的配合卡锁结构形成卡锁连接。Braking device (1) according to any one of the preceding claims, characterized in that a latching structure is formed on the clamp (12), which latching structure is capable of interacting with the braking element. , preferably the matching locking structure on the trunnion forms a locking connection.
  7. 一种用于电驱动致动器(2)的制动装置(1)，其包括：A braking device (1) for an electrically driven actuator (2), comprising:
    一体式构造的制动元件(11d)；和One-piece constructed braking element (11d); and
    使所述制动元件收缩的箍束器(12)，a clamp (12) for retracting said braking element,
    其中，所述制动元件(11d)构造为C形的刹车环，所述刹车环的内部弧面构成大体环形的内孔，电驱动致动器的马达轴(21)穿过C形刹车环的内孔，Wherein, the braking element (11d) is configured as a C-shaped brake ring, the internal arc surface of the brake ring forms a generally annular inner hole, and the motor shaft (21) of the electric drive actuator passes through the C-shaped brake ring. the inner hole,
    其中，在C形的刹车环的两个自由端部上分别构造有两个大体沿径向向外延伸的接片(118；118a；118b)，带头栓钉(13)的栓杆穿过两个接片(118；118a；118b)上的穿孔，所述箍束器(12)穿套在带头栓钉(13)的栓杆上，并沿栓杆方向分别抵靠在栓钉头部(131)与靠近栓钉头部的一个接片(118a)上，在带头栓钉(13)的远离其栓钉头部(131)的自由端一侧设有挡圈(14)，在电驱动致动器的马达轴(21)穿过C形刹车环的内孔的情况下，该挡圈借助箍束器(12)的弹力被止挡压靠在远离栓钉头部(131)的另一个接片(118b)上，Among them, two free ends of the C-shaped brake ring are respectively constructed with two tabs (118; 118a; 118b) extending generally radially outward, and the bolt rods of the headed bolts (13) pass through both Through holes on each connecting piece (118; 118a; 118b), the clamp (12) is inserted into the bolt rod of the headed bolt (13), and respectively abuts against the bolt head (13) along the direction of the bolt stem. 131) and a connecting piece (118a) close to the head of the bolt, a retaining ring (14) is provided on the side of the free end of the headed bolt (13) away from the head of the bolt (131). When the motor shaft (21) of the actuator passes through the inner hole of the C-shaped brake ring, the retaining ring is pressed against the other side away from the bolt head (131) by the elastic force of the clamp (12). On one tab (118b),
    借助箍束器(12)的弹性预紧使刹车环收缩抱紧在马达轴(21)上，使得所述构成所述内孔的所述内部弧面与马达轴之间形成摩擦，从而实现制动作用。With the elastic preload of the clamp (12), the brake ring shrinks and hugs the motor shaft (21), so that friction is formed between the internal arc surface constituting the inner hole and the motor shaft, thereby achieving braking. action.
  8. 根据权利要求7所述的制动装置(1)，其特征在于，所述箍束器通过压簧(12d)构成。The braking device (1) according to claim 7, characterized in that the restraint is formed by a compression spring (12d).
  9. 根据上述权利要求中任一项所述的制动装置(1)，其特征在于，制动元件(11a；11b；11d)上的限制机构与致动器壳体上的互补的对应限制机构相互配合，从而限制制动装置的旋转，Braking device (1) according to any one of the preceding claims, characterized in that the limiting means on the braking element (11a; 11b; 11d) are mutually exclusive with complementary corresponding limiting means on the actuator housing. cooperate to limit the rotation of the braking device,
    其中优选地，所述限制机构由构造在制动元件(11a；11b；11d)上的向外延伸的凸起(113；115；119)或耳轴或接片(118)构成，所述凸起或耳轴或接片能够***致动器壳体的凹槽中，Preferably, the limiting mechanism is formed by an outwardly extending protrusion (113; 115; 119) or a trunnion or a tab (118) formed on the braking element (11a; 11b; 11d). A trunnion or tab can be inserted into a groove in the actuator housing,
    和/或所述限制机构由构造在制动元件(11a；11b；11d)上的凹槽或间隙构成，致动器壳体上的凸起能够伸入所述凹槽或间隙中，and/or the limiting means consist of grooves or gaps formed on the braking element (11a; 11b; 11d) into which protrusions on the actuator housing can extend,
    和/或所述限制机构由所述制动元件(11a；11b；11c；11d)本身非圆形的、优选矩形的外轮廓构成。And/or the limiting mechanism consists of a non-circular, preferably rectangular outer contour of the braking element (11a; 11b; 11c; 11d) itself.
  10. 一种电驱动致动器(2)，其具有根据上述权利要求中任一项所述的制动装置(1)，所述电驱动致动器的马达轴穿过由所述制动装置(1)构成的刹车环。An electrically driven actuator (2) having a braking device (1) according to any one of the preceding claims, the motor shaft of the electrically driven actuator passing through the braking device (1) 1) Brake ring composed of.
  11. 一种电动家具，其具有根据权利要求10所述的电驱动致动器(2)。Electric furniture with an electrically driven actuator (2) according to claim 10.
  12. 根据权利要求11所述的电动家具，其设计为电动沙发、电动座椅、电动床具或电动桌。The electric furniture according to claim 11, which is designed as an electric sofa, an electric seat, an electric bed or an electric table.
PCT/CN2022/114370 2022-07-22 2022-08-24 Brake device for electric drive actuator, and electric drive actuator WO2024016420A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202221916132.5U CN219755171U (en) 2022-07-22 2022-07-22 Braking device for an electric motor, electric motor and piece of electric furniture
CN202210873903.5A CN115143210B (en) 2022-07-22 2022-07-22 Braking device for an electrically driven actuator and electrically driven actuator
CN202210873903.5 2022-07-22
CN202221916132.5 2022-07-22

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WO2024016420A1 true WO2024016420A1 (en) 2024-01-25

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB540777A (en) * 1940-06-14 1941-10-29 Mergenthaler Setzmaschfab Gmbh An improved brake for revolving machine parts
EP1870985A1 (en) * 2006-06-20 2007-12-26 Phase Motion Control S.r.l. An improved brushless motor with self braking features
CN103185084A (en) * 2011-12-30 2013-07-03 第一传动科技股份有限公司 Motor with braking function for actuating device
CN105207404A (en) * 2015-10-16 2015-12-30 常州市凯迪电器有限公司 Electric push rod
CN205017163U (en) * 2015-10-16 2016-02-03 常州市凯迪电器有限公司 Electric pushing rod
CN209313622U (en) * 2018-12-07 2019-08-27 东莞市科肯机电科技有限公司 A kind of motor shaft damping self-locking device of electric pushrod

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB540777A (en) * 1940-06-14 1941-10-29 Mergenthaler Setzmaschfab Gmbh An improved brake for revolving machine parts
EP1870985A1 (en) * 2006-06-20 2007-12-26 Phase Motion Control S.r.l. An improved brushless motor with self braking features
CN103185084A (en) * 2011-12-30 2013-07-03 第一传动科技股份有限公司 Motor with braking function for actuating device
CN105207404A (en) * 2015-10-16 2015-12-30 常州市凯迪电器有限公司 Electric push rod
CN205017163U (en) * 2015-10-16 2016-02-03 常州市凯迪电器有限公司 Electric pushing rod
CN209313622U (en) * 2018-12-07 2019-08-27 东莞市科肯机电科技有限公司 A kind of motor shaft damping self-locking device of electric pushrod

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