CN207559877U - Actuation means - Google Patents

Abstract

A kind of actuation means, comprising：Driven member, actuator, the first piezoelectric elements and the second piezoelectric elements.Driven member, actuator are movably disposed in substrate.The both ends of first piezoelectric elements are fixedly installed on substrate and driven member respectively.The both ends of second piezoelectric elements are fixedly installed on driven member and actuator respectively.First piezoelectric elements can be controlled and are bent to first direction or its negative direction, and the second piezoelectric elements can be controlled and are bent to second direction or its negative direction.When first piezoelectric elements are bent, driven member can be driven to move, and driven member can interlock actuator movement.Second piezoelectric elements can drive actuator to move when being bent.Actuator can be moved relative to substrate along closed path.By the mutual cooperation of the first piezoelectric elements, the second piezoelectric elements and actuator, actuator can be moved along a closed path, and actuator can repeatedly support other components whereby, and other components is made to rotate or constantly be moved to a direction.The structure of actuation means entirety is simple and at low cost.

Description

Actuation means

Technical field

The utility model is related to a kind of actuation means, particularly a kind of actuation means activated using piezoelectric unit.

Background technology

Now common various pivot structure, the relevant shaft structure being especially applied in laptop, in order to accord with The different demands of He Ge manufacturers, pivot structure is increasingly sophisticated, and cost equally increases therewith.Therefore, for manufacturing shaft For the relevant manufactures of structure, how effectively to simplify pivot structure, become most important subject.

Utility model content

The main purpose of the utility model is that a kind of actuation means are provided, and to solve in the prior art, pivot structure It is complicated and of high cost the problem of.

To achieve these goals, the utility model provides a kind of actuation means, it includes：One actuator can live It is set to a substrate dynamicly；One driven member can actively be set to substrate；One first piezoelectric elements, both ends are fixed respectively Substrate and driven member are set to, the first piezoelectric elements are electrically connected a control unit；Wherein, the first piezoelectric elements can be by control unit control System, and be selectively bent to a first direction and in contrast to the direction of first direction；And one second piezoelectric elements, both ends point It is not fixedly installed on driven member and the actuator, the second piezoelectric elements are electrically connected control unit；Wherein, the second piezoelectric elements can be by Control unit controls, and is selectively bent to a second direction and in contrast to the direction of second direction；Wherein, first direction is not It is parallel to second direction；Wherein, control unit first controls the first piezoelectric elements and the second piezoelectric elements respectively to first direction and second Direction is bent, then control unit control again the first piezoelectric elements and the second piezoelectric elements respectively to the direction in contrast to first direction and In contrast to second direction direction bending when, actuator can be driven by the first piezoelectric elements and the second piezoelectric elements and along a closed path It is mobile.

Preferably, actuation means are also comprising a pedestal and substrate, and pedestal is fixedly installed on substrate, and the two of the first piezoelectric elements End is individually fixed in pedestal and driven member.

Preferably, actuation means also include control unit, and control unit is electrically connected the first piezoelectric elements and the second piezoelectricity Part；Control unit can selectively provide the electric current of the first piezoelectric elements difference current direction, and make the first piezoelectric elements selectively It is bent to first direction or in contrast to the direction of first direction；Control unit can selectively provide the second piezoelectric elements difference electric current The electric current in direction, and the second piezoelectric elements is made selectively to be bent to second direction or in contrast to the direction of second direction.

Preferably, actuator includes a perforation, perforates to set a shaft；Control unit control the first piezoelectric elements to When first direction or the direction bending in contrast to first direction, pushing and pressing shaft can be corresponded to by forming the madial wall of perforation；Control unit When controlling the second piezoelectric elements to be bent to second direction or in contrast to second direction, form the madial wall of perforation and can correspond to pushing and pressing and turn Axis.

Preferably, during actuator is repeatedly moved along closed path, forming the madial wall of perforation can repeatedly push away To shaft, and rotate shaft.

Preferably, actuation means also include a moving part, during actuator is repeatedly moved along closed path, drive Moving part can push against moving part, and moving part is made to be moved to an axial direction.

Preferably, actuation means also include a rotating member, during actuator is repeatedly moved along closed path, drive Moving part can push against rotating member, and rotate rotating member.

Preferably, pedestal is set with driven member along a first axle, and driven member is set with actuator along a second axis, the The not parallel second axis of one axis.

Preferably, first axle is perpendicular to second axis.

Preferably, the first piezoelectric elements and the second piezoelectric elements are laminated structure, and the narrow side of the first piezoelectric elements is to face Substrate is provided with the upper surface of actuator, and the narrow side of the second piezoelectric elements is the upper surface for facing actuator.

The beneficial effects of the utility model can be：Pass through the mutual of the first piezoelectric elements, the second piezoelectric elements and actuator Cooperation, actuator can be moved along a closed path, and actuator can repeatedly support other components whereby, and rotate other components Or it is constantly moved to a direction.The structure of actuation means entirety is simple and at low cost.

Description of the drawings

Fig. 1 is the stereoscopic schematic diagram of the first embodiment of the actuation means of the utility model.

Fig. 2 is the top view of the first embodiment of the actuation means of the utility model.

Fig. 3 to Fig. 5 is the illustrative view of the first embodiment of the actuation means of the utility model.

Fig. 6 is the stereoscopic schematic diagram of the second embodiment of the actuation means of the utility model.

Fig. 7 is the top view of the second embodiment of the actuation means of the utility model.

Fig. 8 to Figure 10 is the illustrative view of the second embodiment of the actuation means of the utility model.

Figure 11 is the schematic diagram of the 3rd embodiment of the actuation means of the utility model.

Specific embodiment

It is the schematic diagram of the first embodiment of the actuation means of the utility model also referring to Fig. 1 and Fig. 2.Such as figure It is described, actuation means 1 include a pedestal 10, a substrate 11, a driven member 12, an actuator 13, one first piezoelectric elements 14 and One second piezoelectric elements 15.Pedestal 10 is fixedly installed on substrate 11；Driven member 12 and actuator 13 are movably disposed in base respectively Plate 11.In practical applications, pedestal 10 with driven member 12 is set along a first axle AX1, and driven member 12 and actuator 13 are then It is to be set along a second axis AX2；Wherein, first axle AX1 is not parallel to second axis AX2；In other words, pedestal 10, from Moving part 12 and actuator 13 are set along same axis.Preferably, the first axle AX1 and the second axis AX2 can To be to be mutually perpendicular to.External form and its setting position opposite to each other about pedestal 10, substrate 11, driven member 12 and actuator 13 It puts, can be changed according to demand, not to be limited shown in scheming.

The both ends of first piezoelectric elements 14 are fixedly installed on pedestal 10 and driven member 12, the both ends point of the second piezoelectric elements 15 respectively It is not fixedly installed on driven member 12 and actuator 13.In practical applications, pedestal 10 and driven member 12 connect the first piezoelectricity respectively The position of part 14 can have a clamp structure 101,121, and driven member 12 and actuator 13 connect the second piezoelectric elements 15 respectively Position, equally can be with clamp structure 121,131.The both ends of first piezoelectric elements 14 can be then corresponding respectively be held on Clamp structure 101,121；The both ends of second piezoelectric elements 15 can be then corresponding to be respectively held on clamp structure 121,131.Wherein, Each clamp structure 101,121,131 can be cooperation locking part (such as screw), to fix the first piezoelectric elements 14 and the second pressure Electric part 15.Certainly, the mode that the first piezoelectric elements 14 and the second piezoelectric elements 15 and two pedestals 10 are fixed to each other, not with shown in scheming It is limited.In different applications, the first piezoelectric elements 14 can be that pedestal 10 and driven member 12 are fixed in a manner of bonding；Second Piezoelectric elements 15 equally can be that driven member 12 and actuator 13 are fixed in a manner of bonding.

A control unit (not shown) is electrically connected in first piezoelectric elements 14 and the second piezoelectric elements 15.Control unit can be selected The electric current of the different current directions of the first piezoelectric elements 14 is provided to selecting property, so that the first piezoelectric elements 14 are selectively to a first direction D1 or the direction D1 ' bendings in contrast to first direction D1；It is different that control unit equally can selectively provide the second piezoelectric elements 15 The electric current of current direction, so that the second piezoelectric elements 15 are selectively to second direction D2 or the direction in contrast to second direction D2 D2 ' is bent.Wherein, the first direction D1 is not parallel to second direction D2.

When the first piezoelectric elements 14 are controlled by control unit, and selectively to first direction D1 or in contrast to first direction D1 Direction D1 ' bending when, driven member 12 will be driven by the first piezoelectric elements 14, and be moved relative to substrate 11；Driven member 12 is opposite When substrate 11 moves, the second piezoelectric elements 15 and actuator 13 will be driven and be moved relative to substrate 11.When the second piezoelectric elements 15 are controlled by control unit, and selectively to second direction D2 or in contrast to second direction D2 direction D2 ' bending when, driving Part 13 will be driven by the second piezoelectric elements 15, and be moved relative to substrate 11.

In practical applications, control unit can be included microprocessor (not shown) and power supply unit (figure is not Show), microprocessor can then control power supply unit selectively to provide the first piezoelectric elements 14 or the different electricity of the second piezoelectric elements 15 Flow the electric current in direction；Microprocessor can be while or the sequential according to design, control power supply unit provide scheduled current The electric current in direction is to the first piezoelectric elements 14 and the second piezoelectric elements 15.

In specific application, the first piezoelectric elements 14 and the second piezoelectric elements 15 can be rendered as sheet knot shown in figure Structure.Preferably, the upper surface that the narrow side of the first piezoelectric elements 14 and the second piezoelectric elements 15 can be approximately perpendicular to substrate 11 is set It puts.In concrete application, the upper surface of substrate 11 can be provided with the position limiting structure of multiple protrusions, and actuator 13 and driven Part 12 can be correspondingly arranged between multiple position limiting structures, whereby, actuator 13 and driven member 12 it is driven and relative to base When plate 11 moves, the moving range of actuator 13 and driven member 12 can be limited by multiple position limiting structures.

First piezoelectric elements 14 are by control unit control and repeatedly to first direction D1 or the direction in contrast to first direction D1 When D1 ' is bent, driven member 12 will be driven and into Fig. 3, substantially -X direction or X-direction move relative to substrate 11；In driven member During 12 move relative to substrate 11, actuator 13 will be driven to move together driven member 12.Also that is, the first piezoelectric elements 14 When by control unit control, repeatedly the direction D1 ' to first direction D1 or in contrast to first direction D1 is bent, actuator 13 By substantially -X direction or X-direction movement by the drive of driven member 12 and into Fig. 3.In practical applications, in the first piezoelectric elements 14 When being bent repeatedly to first direction D1 and its negative direction D1 ', in order to actuator 13 is enable effectively to be driven and into Fig. 3 substantially X-direction and-X movements, the periphery that substrate 11 is adjacent to driven member 12 can be provided with multiple position limiting structures, limit whereby Y-direction or -Y direction movement of the driven member 12 in Fig. 3.When second piezoelectric elements 15 are controlled by control unit, the second piezoelectric elements 15 One end being connected with actuator 13, it will be selectively bent to second direction D2 or its negative direction D2 ', and drive actuator 13 into Fig. 3 substantially Y-direction or -Y direction movement.

As described above, control unit repeatedly controls the first piezoelectric elements 14 and the second piezoelectric elements 15 respectively to first direction It is driven when D1, the direction D1 ' in contrast to first direction D1, second direction D2 and the direction D2 ' in contrast to second direction D2 are bent Part 12 and actuator 13 will be driven, and in the feelings of appropriate control the first piezoelectric elements 14 of control unit and the second piezoelectric elements 15 Under condition, actuator 13 will be driven and be moved along a closed path, will lift a concrete instance explanation below.The closed path Such as can be similar circle, rectangle, ellipse etc., it is not limited in this.

Also referring to Fig. 2 to Fig. 5, Fig. 2 is shown as the 15 not controlled unit control processed of the first piezoelectric elements 14 and the second piezoelectric elements Status diagram when making and being bent；Fig. 3 to Fig. 5 is shown as control unit and controls the first piezoelectric elements 14 and the second piezoelectric elements 15 first Backward specific direction bending, so that the illustrative view that actuator 13 is moved along the closed path.In practical applications, it controls Unit controls the bending direction of 15 priority of the first piezoelectric elements 14 and the second piezoelectric elements, and not to be limited shown in scheming, any control is single Member the first piezoelectric elements 14 of control and the second piezoelectric elements 15, and the control mode that actuator 13 can be made to be moved along closed path, all belong to In the change application range of the present embodiment.

As shown in figure 3, control unit can be that the first piezoelectric elements 14 is first controlled to be bent to first direction D1, and control second Piezoelectric elements 15 are bent to second direction D2, at this point, driven member 12 will be driven and the -X direction movement substantially into figure, and are driven Moving part 13 will be driven and the -X direction movement equally substantially into figure by driven member 12, and actuator 13 simultaneously can be by the second pressure Electric part 15 drives and the -Y direction movement substantially into figure.In practical applications, control unit can be the first pressure of control simultaneously Electric 14 and second piezoelectric elements 15 of part are bent respectively to first direction D1 and second direction D2；Control unit can also first control One piezoelectric elements 14 are bent to first direction D1, then the second piezoelectric elements 15 is controlled to be bent to second direction D2；Alternatively, control unit But the second piezoelectric elements 15 is first controlled to be bent to second direction D2, then the first piezoelectric elements 14 is controlled to be bent to first direction D1.

As shown in figure 4, control unit can after the first piezoelectric elements 14 and the second piezoelectric elements 15 are rendered as the state of Fig. 3, The first piezoelectric elements 14 is controlled to be bent to the direction D1 ' in contrast to first direction D1, at this point, driven member 12 will be by the first piezoelectric elements 14 drive and the substantially X-direction movement into figure, and actuator 13 can then be driven by driven member 12 and into figure, substantially X-direction is moved simultaneously It is dynamic.As shown in figure 5, after actuator 13 is rendered as the state of Fig. 4, control unit can control the second piezoelectric elements 15 again to phase Instead it is bent in the direction D2 ' of second direction D2, at this point, actuator 13 will be driven by the second piezoelectric elements 15, and the Y substantially into figure It moves in direction.In this way, during actuator 13 is converted by Fig. 3 to Fig. 5, actuator 13 is i.e. by the first piezoelectric elements 14 and the second pressure Electric part 15 drives, and is moved approximately along closed path counterclockwise, and for microcosmic angle, actuator 13 is generally along similar The closed path movement of rectangle.

As described above, control unit first controls the first piezoelectric elements 14 and the second piezoelectric elements 15 respectively to first direction D1 and Two direction D2 are bent, and then control the first piezoelectric elements 14 and the second piezoelectric elements 15 again respectively to the direction in contrast to first direction D1 D1 ', the direction D2 ' bendings in contrast to second direction D2, then actuator 13 will be by the first piezoelectric elements 14 and the second piezoelectric elements 15 Drive is moved, and the path of motion of actuator 13 is then substantially assumed closed relative to substrate 11.In various embodiments, Control unit can be that the first piezoelectric elements 14 of control and the second piezoelectric elements 15 are sequentially converted by Fig. 5, Fig. 4 to the state of Fig. 3；And scheme The sequencing of 4 and Fig. 5 can also be converted according to actual demand.

It is noted that in practical applications, in the offset phase that the first piezoelectric elements 14 and the second piezoelectric elements 15 are bent To it is larger when, control unit can be control the first piezoelectric elements 14 in first direction D1, the direction D1 ' in contrast to first direction D1 And it is mutually converted under three kinds of states of neutral (being not biased towards first direction D1 or its opposite direction D1 ')；Control unit is equally It can be that the second piezoelectric elements 15 of control mutually convert under three kinds of states, and be not limited to shown in Fig. 3 to Fig. 5, control unit The first piezoelectric elements 14 and the second piezoelectric elements 15 is controlled mutually to be converted in two states.

Please ginseng Fig. 1, actuator 13 can be again that there is a perforation 132, perforation 132 is plugging a shaft 16.In reality In, shaft 16 can be rotatably fixed to be set on substrate 11, and corresponding in perforation 132.The perforation 132 Internal diameter be slightly greater than the diameter of shaft 16；When driven member 12 is driven by the first piezoelectric elements 14, and interlock actuator 13 relative to When substrate 11 moves, pushing and pressing shaft 16 can then be corresponded to by forming the madial wall of perforation 132；In the same manner, actuator 13 is by the second piezoelectricity Part 15 is driven when being moved on substrate 11, and pushing and pressing shaft 16 can be corresponded to by forming the madial wall of perforation 132.In other words, it perforates Gap between 132 internal diameter and the diameter of shaft 16 can be to specific according to the first piezoelectric elements 14 and the second piezoelectric elements 15 Offset when direction is bent is designed.

Such as the start of earlier figures 3 to Fig. 5, when control unit controls the first piezoelectric elements 14 and the second piezoelectric elements 15 respectively repeatedly Ground to first direction D1 and its opposite direction D1 ', second direction D2 and its opposite direction D2 ' be bent when, actuator 13 will by from 12 and second piezoelectric elements 15 of moving part drive, and are moved relative to substrate 11 along closed path；Simultaneously, perforation 132 is formed Madial wall, the bending direction with 12 and second piezoelectric elements 15 of driven member is different, and pushing and pressing shaft 16 is corresponded to different directions It is mobile, in this way, can rotate shaft 16.In practical applications, control unit controls the first piezoelectric elements 14 and the second piezoelectric elements 15 sequentially to specific direction be bent, and make actuator 13 along closed path move one time when, formed perforation 132 madial wall will be right Shaft 16 should be pushed against, and shaft 16 is made to rotate a low-angle.Relatively, control unit continuously controls the first piezoelectric elements 14 and Two piezoelectric elements 15 are bent to specific direction, and when so that the actuator 13 is repeatedly moved along closed path, shaft 16 will be formed and wear The madial wall pushing and pressing in hole 132, and constantly rotated to the same direction, shaft 16 was by rotatable one week or more whereby.Certainly, not In same application, actuator 13 moves once along closed path, and shaft 16 can also be that correspondence rotates a circle.

It is the schematic diagram of the second embodiment of the actuation means of the utility model also referring to Fig. 6 and Fig. 7.Such as figure It is shown, the present embodiment and previous embodiment maximum the difference lies in, actuation means 1 ' can also include a moving part 17, Can be adjacent to the setting of actuator 13 '.Actuator 13 ' is driven by the first piezoelectric elements 14 and the second piezoelectric elements 15, and along described When closed path moves, actuator 13 ' can selectively push against moving part 17, so that moving part 17 is moved to an axial direction.

Specifically, also referring to Fig. 8 to Figure 10, it is shown as the start signal of the actuation means 1 ' of the present embodiment Figure.As shown in figure 8, control unit can be first control the first piezoelectric elements 14 and the second piezoelectric elements 15 respectively to first direction D1 and Second direction D2 is bent, and actuator 13 is enable to be driven and is substantially moved to -X direction and Y-direction.As shown in figure 9, then control Unit processed can be that the first piezoelectric elements 14 is controlled to be bent to the direction D1 ' in contrast to first direction D1 again, and actuator 13 is then at this time It can be driven and substantially be moved to X-direction.As shown in Figure 10, last control unit can be the second piezoelectric elements 15 of control to opposite It is bent in the direction D2 ' of second direction D2, so that actuator 13 is driven and is substantially moved to -Y direction.Such as Fig. 8 to Figure 10, drive Moving part 13 is after control unit continuously controls the first piezoelectric elements 14 and the second piezoelectric elements 15, it will is driven and is substantially sealed along one The path movement closed.

It is driven in actuator 13 during being moved along the closed path, the part of actuator 13 is pushed against corresponding Moving part 17, and enable moving part 17 mobile along an axis direction (being -Y direction in Figure 10)；Control unit repeatedly controls First piezoelectric elements 14 and the second piezoelectric elements 15 are sequentially to first direction D1, second direction D2, the direction in contrast to first direction D1 D1 ' and the direction D2 ' bendings in contrast to second direction D2, then actuator 13 will repeatedly push against moving part 17, and make moving part 17 constantly move along the axis direction.

In practical application, actuator 13 is pushed away in the case where which kind of state the first piezoelectric elements 14 and the second piezoelectric elements 15 are rendered as It to moving part 17, does not limit, can be designed according to actual demand in this.In addition, it is with moving part in the present embodiment figure After the pushing and pressing of 17 driven members 13, moved to the -Y direction of Figure 10, but not limited to this；For example, control unit control first The actuator state of 14 and second piezoelectric elements 15 of piezoelectric elements is sequentially converted by Figure 10 to Fig. 8, then moving part 17 can be driven to The Y-direction movement of Figure 10.In preferable application, actuation means 1 can also include multiple auxiliary members 18, multiple auxiliary Part 18 can be adjacent to moving part 17 to set, and assist the movement of moving part 17；For example, auxiliary member 18 can be rolling Wheel.

1 is please referred to Fig.1, is the schematic diagram of the 3rd embodiment of the actuation means of the utility model.As shown in the figure, this reality Applying example, the difference lies in actuation means 1 " can also include a rotating member 19, be adjacent to drive with previous embodiment maximum Moving part 13 is set.Actuator 13 is repeatedly driven by the first piezoelectric elements 14 and the second piezoelectric elements 15, and repeatedly along closed path In mobile process, the part of actuator 13 can push against rotating member 19 repeatedly, and rotate rotating member 19.

Claims (10)

1. a kind of actuation means, which is characterized in that the actuation means include：

One actuator can actively be set to a substrate；

One driven member can actively be set to the substrate；

One first piezoelectric elements, both ends are fixedly installed on the substrate and the driven member respectively, and first piezoelectric elements are electrical Connect a control unit；Wherein, first piezoelectric elements can be controlled by described control unit, and selectively to a first direction And it is bent in contrast to the direction of the first direction；And

One second piezoelectric elements, both ends are fixedly installed on the driven member and the actuator, the second piezoelectric elements electricity respectively Property connection described control unit；Wherein, second piezoelectric elements can be controlled by described control unit, and selectively to one second Direction and the direction bending in contrast to the second direction；Wherein, the first direction is not parallel to the second direction；

Wherein, described control unit first control first piezoelectric elements and second piezoelectric elements respectively to the first direction and The second direction bending, then described control unit controls first piezoelectric elements and second piezoelectric elements respectively to phase again Anti- when the direction of the first direction and the direction bending in contrast to the second direction, the actuator can be by described first Piezoelectric elements and second piezoelectric elements drive and are moved along a closed path.

2. actuation means according to claim 1, which is characterized in that the actuation means are also comprising a pedestal and described Substrate, the pedestal are fixedly installed on the substrate, and the both ends of first piezoelectric elements are individually fixed in the pedestal and described Driven member.

3. actuation means according to claim 1, which is characterized in that it is single that the actuation means also include the control Member, described control unit are electrically connected first piezoelectric elements and second piezoelectric elements；Described control unit can be selectively The electric current of the first piezoelectric elements difference current direction is provided, and makes first piezoelectric elements selectively to the first direction Or it is bent in contrast to the direction of the first direction；Described control unit can selectively provide second piezoelectric elements different electricity The electric current in direction is flowed, and makes second piezoelectric elements selectively to the second direction or the side in contrast to the second direction To bending.

4. actuation means according to claim 3, which is characterized in that the actuator includes a perforation, the perforation To set a shaft；Described control unit controls first piezoelectric elements to the first direction or in contrast to the first party To direction be bent when, the pushing and pressing shaft can be corresponded to by forming the madial wall of the perforation；Described control unit control described the When two piezoelectric elements are bent to the second direction or in contrast to the second direction, form the madial wall of the perforation and can correspond to and push away To the shaft.

5. actuation means according to claim 4, which is characterized in that the actuator is repeatedly moved along the closed path In dynamic process, the shaft can repeatedly be pushed against by forming the madial wall of the perforation, and rotate the shaft.

6. actuation means according to claim 1, which is characterized in that the actuation means also include a moving part, institute It states during actuator repeatedly moves along the closed path, the actuator can push against the moving part, and make described Moving part is moved to an axial direction.

7. actuation means according to claim 1, which is characterized in that the actuation means also include a rotating member, institute It states during actuator repeatedly moves along the closed path, the actuator can push against the rotating member, and make described Rotating member rotates.

8. actuation means according to claim 2, which is characterized in that the pedestal and the driven member are along a first axle Setting, the driven member are set with the actuator along a second axis, the not parallel second axis of first axle.

9. actuation means according to claim 8, which is characterized in that the first axle is perpendicular to the second axis.

10. actuation means according to claim 1, which is characterized in that first piezoelectric elements and second piezoelectric elements Narrow side for laminated structure, and first piezoelectric elements is to face the upper surface that the substrate is provided with the actuator, The narrow side of second piezoelectric elements is the upper surface for facing the actuator.