CN107408473B - Rotary encoder - Google Patents
Rotary encoder Download PDFInfo
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- CN107408473B CN107408473B CN201680015627.1A CN201680015627A CN107408473B CN 107408473 B CN107408473 B CN 107408473B CN 201680015627 A CN201680015627 A CN 201680015627A CN 107408473 B CN107408473 B CN 107408473B
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- Prior art keywords
- mechanical axis
- encoder
- sliding part
- code device
- contact portion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H25/00—Switches with compound movement of handle or other operating part
- H01H25/06—Operating part movable both angularly and rectilinearly, the rectilinear movement being along the axis of angular movement
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- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Switches With Compound Operations (AREA)
- Adjustable Resistors (AREA)
Abstract
Rotary encoder of the invention includes mechanical axis；The mechanical axis can be rotated and can be kept up or down with insert state by code device, and detect direction of rotation and the rotation angle of the mechanical axis；And switching mechanism, it is inserted through the end pressing of the mechanical axis of the code device.The code device includes rotor, can integrally rotatably be assemblied in the mechanical axis with the mechanical axis；Sliding part is assemblied in the rotor；And fixed contact component, for the sliding part sliding contact.The code device and the switching mechanism are configured as: the sliding part, which is located at, more leans on the switching mechanism side than the fixed contact component.
Description
Technical field
The present invention relates to rotary encoders.
Background technique
In the past, as rotary encoder, such as have in Japanese Unexamined Patent Publication 2004-95242 bulletin (patent document 1) record
Rotary encoder.The rotary encoder of patent document 1 has the latch mechanism of the rotation angle of mechanical axis, limit mechanical axis, inspection
The switching mechanism for surveying the direction of rotation of mechanical axis and rotating the code device of angle and being pressed by mechanical axis.
The code device of patent document 1 is configured to, and has and is assemblied in the rotor of mechanical axis and is assemblied in the bottom surface of rotor
The sliding part of side, and be formed in the ring electrode pattern sliding contact being configured on the encoder substrate of the lower section of rotor.
Citation
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2004-95242 bulletin
Summary of the invention
Subject to be solved by the invention
However, when pressing mechanical axis, rotor can also be stretched in the rotary encoder of patent document 1, therefore slide
Part is compressed by resistance pattern.As a result, sliding part can deform and make to compile sometimes in the case where pressing mechanical axis with strong power
The reliability decrease of the output of code device.
Therefore, problem of the present invention is that, a kind of change for being able to suppress the sliding part as caused by the pressing of mechanical axis is provided
The rotary encoder of shape.
A technical solution to solve project
In order to solve the above problems, rotary encoder of the invention includes
Mechanical axis；
The mechanical axis can be rotated and can be kept up or down with insert state, and detected by code device
The direction of rotation of the mechanical axis and rotation angle；And
Switching mechanism is inserted through the end pressing of the mechanical axis of the code device,
The rotary encoder is characterized in that,
The code device includes rotor, can integrally rotatably be assemblied in the mechanical axis with the mechanical axis；It is sliding
Moving part is assemblied in the rotor；And fixed contact component, for the sliding part sliding contact,
The code device and the switching mechanism are configured as: the sliding part is located at than the fixed contact component
More lean on the switching mechanism side.
According to the present invention, sliding part is located at specific resistance body pattern (example of fixed contact component) more by switching mechanism
Side, therefore even if pressing mechanical axis, sliding part also due to the weight of rotor and to far from resistor body pattern direction stress, because
This can prevent sliding part from being compressed by resistor body pattern.The deformation that can inhibit sliding part as a result, is able to suppress the output of encoder
Reliability decrease.
In addition, electricity can be as an embodiment, the code device has substrate, the fixed contact structure
Part is the resistor body pattern being arranged on the substrate.
According to one embodiment, the resistor body figure being disposed on the substrate is used and as fixed contact component
Case so that the resistor body pattern of circular or pectination continuous shape can not only be used, and is able to use and is not connected by multiple
The resistor body pattern that continuous part is constituted, therefore it is capable of increasing the freedom degree of the selection of resistor body pattern.
In addition, being also possible to mechanical axis can move up and down relative to rotor as another embodiment.
According to the another embodiment, mechanical axis can be moved up and down relative to rotor, therefore even if pressing is mechanical
Axis, is also able to maintain the position of rotor, to maintain the contact of sliding part with resistor body pattern.
Invention effect
Rotary encoder according to the present invention is able to suppress the deformation of the sliding part as caused by the pressing of mechanical axis, therefore
It is able to suppress the reliability decrease of the output of the encoder as caused by the deformation of sliding part.
Detailed description of the invention
Fig. 1 is the perspective view from the top of the rotary encoder of an embodiment of the invention.
Fig. 2 is the perspective view from the lower section of rotary encoder.
Fig. 3 is the exploded perspective view from the top of rotary encoder.
Fig. 4 is the exploded perspective view from the lower section of rotary encoder.
Fig. 5 is the cross-sectional view of rotary encoder.
Fig. 6 is the exploded perspective view from the lower section of code device.
Fig. 7 is the perspective view from the lower section of code device.
Fig. 8 is the circuit diagram for showing the equivalent circuit of code device.
Fig. 9 is the waveform diagram for showing the output waveform of code device.
Figure 10 is the top view for showing the relationship of mechanical axis and limiting member.
Figure 11 A is the curve of the variation of the torque of the first contact portion and the second contact portion when showing mechanical axis rotation
Figure.
Figure 11 B is the variation for showing the torque synthesized to the torque of the first contact portion and the torque of the second contact portion
Curve graph.
Figure 12 is the perspective view for showing the second embodiment of rotary encoder of the invention.
Figure 13 is the exploded perspective view of rotary encoder.
Figure 14 is the top view of rotary encoder.
Specific embodiment
Hereinafter, the present invention is described in more detail with reference to.
Rotary encoder of the invention includes mechanical axis；The mechanical axis can be rotated and energy is upper and lower by code device
Movably to insert state holding, and detect direction of rotation and the rotation angle of the mechanical axis；And switching mechanism, quilt
It is inserted through the end pressing of the mechanical axis of the code device, the rotary encoder is characterized in that, the coding
Device mechanism includes rotor, can integrally rotatably be assemblied in the mechanical axis with the mechanical axis；Sliding part is assemblied in this turn
Son；And fixed contact component, for the sliding part sliding contact, the code device and the switching mechanism are configured as:
The sliding part, which is located at, more leans on the switching mechanism side than the fixed contact component.
Here, be fixed contact member for the fixed contact component of rotary encoder of the invention, and be for
The contact member for the sliding part sliding contact that mechanical axis rotates together.Fixed contact component, which can be, to be arranged in supporting masses such as substrates
On there is the mode of various shapes as electroconductive member, such as resistor body pattern, alternatively, being also possible to fixed contact structure
Part itself doubles as the mode of supporting mass.In the following embodiments, the example of resistor body pattern has been used fixed contact component
Son is illustrated.
(first embodiment)
Fig. 1 is the perspective view from the top of the rotary encoder of an embodiment of the invention.Fig. 2 is from rotation
The perspective view of the lower section observation of encoder.Fig. 3 is the exploded perspective view from the top of rotary encoder.Fig. 4 is from rotation
The exploded perspective view of the lower section observation of encoder.Fig. 5 is the cross-sectional view of rotary encoder.
In the various figures, the width direction of rotary encoder is set as X-direction, and the length direction of rotary encoder is set as
Y-direction.The short transverse of rotary encoder is set as Z-direction.The positive direction of Z-direction is set as upside, and by the losing side of Z-direction
To on the downside of being set as.
As shown in Figures 1 to 5, rotary encoder 1 is with shell 2, can move with rotary shaft and along the rotary shaft
The limiting member 5 of the rotation angle of mechanical axis 3, limit mechanical axis 3, the direction of rotation for detecting mechanical axis 3 and rotation angle
Code device 6 and the switching mechanism 7 pressed by the movement along rotary shaft of mechanical axis 3 by mechanical axis 3.Limitation
Component 5, code device 6 and switching mechanism 7 configure in order from the upper side to the lower side along the axis of mechanical axis 3.
Shell 2 for example consists of metal.Shell 2 is by mechanical axis 3, limiting member 5, code device 6 and switching mechanism 7
It is assembled integrally.
Shell 2 includes upper wall 21；The two sides being arranged in the X-direction of upper wall 21 and the side wall 22,22 extended downward；
The positive direction being arranged in the Y-direction of upper wall 21 and the prominent wall 23 extended downward；And it is arranged in the Y-direction of upper wall 21
Negative direction and the tab 24 extended downward.Upper wall 21 has hole portion 21a.Side wall 22 has hole portion 22a in downside, and in upside
With groove portion 22b.It is provided in the inner surface of hole portion 22a to the inside of shell 2 engaging portion 22c outstanding.Wall 23 dash forward through upper wall
Overall length in 21 X-direction and extend.The central portion in the X-direction of upper wall 21 is arranged in tab 24.
Mechanical axis 3 is for example made of resin.Mechanical axis 3 has operation portion 35, the outer peripheral surface 30 of gear-like and end 36.
Operation portion 35, the outer peripheral surface 30 of gear-like and end 36 configure in order from the upper side to the lower side along rotary shaft.Operation portion 35 has
There is the notch of the mark of the rotation as mechanical axis 3.The outer peripheral surface 30 of gear-like includes multiple protrusions 31 and recess portion 32.It is multiple
Protrusion 31 and recess portion 32 are alternately arranged in the circumferential.Operation portion 35 penetrates through the hole portion 21a of the upper wall 21 of shell 2, user
Operation portion 35 can be operated from the outside of shell 2.
Limiting member 5 for example consists of metal.Limiting member 5 is, for example, leaf spring.Limiting member 5 has can be with mechanical axis
The first contact portion 51 and the second contact portion 52 that 3 outer peripheral surface 30 contacts.First contact portion 51 and the second contact portion 52 are right
The protrusion 31 of the outer peripheral surface 30 of mechanical axis 3 is elastic force-applying and contacts, and on the other hand, is embedded into the recessed of the outer peripheral surface 30 of mechanical axis 3
Portion 32 and the rotation angle of limit mechanical axis 3.First contact portion 51 and 52 bending of the second contact portion and constitute.First contact portion
51 and second contact portion 52 be in substantially opposed position.
Mechanical axis 3 can be rotated and can be inserted up or down state holding by code device 6, and detect machinery
The direction of rotation of axis 3 and rotation angle, comprising: encoder substrate 60, have resistor body pattern 61,62,63 and with the resistance
The encoder terminal 601,602,603 that body pattern 61,62,63 is electrically connected；Rotor 65 is assemblied in mechanical axis 3, makes it possible to and machine
Tool axis 3 rotates together；And sliding part 66, be assemblied in rotor 65 and with 61,62,63 sliding contact of resistor body pattern.
Encoder substrate 60 is for example made of resin.The upper surface of encoder substrate 60 is provided with recess portion 60a, in recess portion
60a is embedded in limiting member 5.Two sides in the X-direction of encoder substrate 60 are provided with protrusion 60b.Protrusion 60b is embedded into shell
The groove portion 22b of 2 side wall 22.Two sides in the Y-direction of encoder substrate 60 are clipped by prominent wall 23 and tab 24.Like this, it compiles
Code device substrate 60 is fixed on shell 2 by the groove portion 22b, prominent wall 23 and tab 24 of side wall 22.In other words, the groove portion of side wall 22
22b, prominent wall 23 and tab 24 constitute the encoder fixed part that encoder substrate 60 is fixed.In encoder substrate 60
Center is formed with the hole portion 64 for becoming the insertion hole that mechanical axis 3 is kept with insert state.
The lower surface of encoder substrate 60 is arranged in resistor body pattern 61,62,63.Resistor body pattern 61,62,63 is for examining
Survey direction of rotation and the rotation angle of mechanical axis 3.First resistor body pattern 61, second resistance body pattern 62 and 3rd resistor
Body pattern 63 is formed as cyclic annular, and is configured to same heart shaped.First resistor body pattern 61, second resistance body pattern 62 and third electricity
Resistance body pattern 63 configures in order inwardly from radial outside.First resistor body pattern 61 and second resistance body pattern 62 exist respectively
It sets up interval week and is formed.3rd resistor body pattern 63 is continuously formed.
Encoder terminal 601,602,603 is insert molded in encoder substrate 60.First encoder terminal 601 and the first electricity
Resistance body pattern 61 is electrically connected, and second encoder terminal 602 is electrically connected with second resistance body pattern 62, third encoder terminal 603
It is electrically connected with 3rd resistor body pattern 63.
As long as rotor 65 can be rotated integrally with mechanical axis 3, it can it can move in the axial direction, it can also cannot
It is mobile.Show in the figure rotor 65 positioned in the circumferential relative to mechanical axis 3 and can move in the axial direction (can on move down
It is dynamic) the case where.It illustrates as rotor 65 has the hole portion 65a of D-shaped shape.The outer peripheral surface of the end 36 of mechanical axis 3 is formed as D
Shape.The end 36 of D-shaped shape is entrenched in the hole portion 65a of D-shaped shape, so that rotor 65 is fixed in the circumferential relative to mechanical axis 3,
It is then unlocked in axial direction.
Rotor 65 is depicted as having a substantially elliptical shape.651 He of length-diameter part that there is rotor 65 outer diameter of rotor 65 to become major diameter
The outer diameter of rotor 65 becomes the narrow section 652 of minor axis.The length of length-diameter part 651 be greater than opposed side wall 22 engaging portion 22c it
Between gap, the length of narrow section 652 is less than the gap between the engaging portion 22c of opposed side wall 22.In other words, engaging portion
22c is configured to, and narrow section 652 is not locking and is detached from, and length-diameter part 651 can be locking or de- by the rotation of rotor 65
From.
Sliding part 66 for example consists of metal.Sliding part 66 is fixed on two protrusion 65b of the upper surface of rotor 65.Sliding
Part 66 is formed as cyclic annular.Sliding part 66 has the first contact portion 661, the second contact portion 662 and third contact portion 663.First
Contact portion 661, the second contact portion 662 and third contact portion 663 configure in order inwardly from radial outside.First contact portion
661, the second contact portion 662 and third contact portion 663 are connected.First contact portion 661 can connect with first resistor body pattern 61
Touching, the second contact portion 662 can be contacted with second resistance body pattern 62, and third contact portion 663 can be with 3rd resistor body pattern
63 contacts.
Switching mechanism 7 have switch substrate 70, be arranged in the first of switch substrate 70 to third switch terminal 701,702,
703 and switch substrate 70 is set and is pressed by the end of mechanical axis 3 36 electric conductor 71.Electric conductor 71 and first switch
Terminal 701, second switch terminal 702 are electrically connected.Electric conductor 71 by mechanical axis 3 end 36 pressing and with third switch terminal
703 electrical connections, so that first switch terminal 701, second switch terminal 702 and third switch terminal 703 are connected.It opens when first
When closing terminal 701, second switch terminal 702 and the conducting of third switch terminal 703, switching signal is connected.For example, passing through switch letter
Number connection, each function acted.Alternatively, it is also possible to first switch terminal 701 only be arranged, in second switch terminal 702
The switch terminal of one side.
Two sides in the X-direction of switch substrate 70 are provided with protrusion 70b.Protrusion 70b is embedded into the side wall 22 of shell 2
Hole portion 22a.Like this, switch substrate 70 is fixed on shell 2 by the hole portion 22a of side wall 22.In other words, the hole portion of side wall 22
22a constitutes the switch fixed part that switch substrate 70 is fixed.
A side in the X-direction of the lower surface of switch substrate 70 is provided with stage portion 70c.It is locking in stage portion 70c
The end of the encoder terminal 601,602,603 of bending.That is, the encoder that encoder substrate 60 and switch substrate 70 pass through bending
Terminal 601,602,603 and obvolvent is integral.
The depth of stage portion 70c is deeper than the thickness of encoder terminal 601,602,603.As a result, by switch substrate 70
Lower surface is arranged in installation base plate, can be using the lower surface of switch substrate 70 as setting face, rather than encoder terminal
601、602、603。
First is insert molded in switch substrate 70 to third switch terminal 701,702,703.Third switch terminal 703 is located at
Between first switch terminal 701 and second switch terminal 702.
Electric conductor 71 has elasticity.Electric conductor 71 is formed as arcuation.Electric conductor 71 is embedded into the upper surface of switch substrate 70
Recess portion 70a.
The peripheral part 71a of electric conductor 71 is electrically connected with first switch terminal 701, second switch terminal 702.Electric conductor 71
Vault part 71b separated under the free state of electric conductor 71 with third switch terminal 703, on the other hand, by perforation encode
The end 36 of the mechanical axis 3 of device mechanism 6 presses and is electrically connected with third switch terminal 703.
That is, the end 36 of mechanical axis 3 presses the vault part 71b of electric conductor 71 when to downside pressing machine tool axis 3, from
And the vault part 71b of electric conductor 71 is electrically connected with third switch terminal 703.First switch terminal 701, second switch as a result,
Terminal 702 is electrically connected with third switch terminal 703, so that switching signal is connected.
On the other hand, when releasing the pressing to downside of mechanical axis 3, electric conductor 71 returns to free state, thus machine
The upward side of tool axis 3 is mobile, and the vault part 71b of electric conductor 71 is separated with third switch terminal 703.First switch terminal as a result,
701, with third switch terminal 703 without being electrically connected, switching signal disconnects second switch terminal 702.
Here, sliding part 66 is located at specific resistance body pattern 61,62,63 more by 7 side of switching mechanism (downside).It is inciting somebody to action as a result,
It when mechanical axis 3 is pressed to 7 side of switching mechanism, is stretched even if rotor 65 is pulled downwardly, sliding part 66 also can be to far from resistor body pattern
61,62,63 direction stress.Therefore, sliding part 66 will not be pressed and deformed by resistor body pattern 61,62,63, be able to maintain that volume
The reliability of the output of Ma Qi mechanism 6.In turn, by enabling mechanical axis 3 to move in the up-down direction relative to rotor 65, from
And even if pressing mechanical axis 3, it is also able to maintain the position of rotor 65, to maintain sliding part 66 and resistor body pattern 61,62,63
Contact.
Fig. 6 is the exploded perspective view from the lower section of code device 6.As shown in fig. 6, under encoder substrate 60
Surface is provided with first electrode portion 671, second electrode portion 672, third electrode portion 673.First electrode portion 671, second electrode portion
672 and third electrode portion 673 be formed as cyclic annular, and be configured to same heart shaped.First electrode portion 671, second electrode portion 672 and
Third electrode portion 673 configures in order inwardly from radial outside.The end in first electrode portion 671 and the first encoder terminal 601
Portion 601a electrical connection, second electrode portion 672 is electrically connected with the end 602a of second encoder terminal 602, third electrode portion 673 and
The end 603a of third encoder terminal 603 is electrically connected.
Insulating trip 68 is laminated in first electrode portion 671, second electrode portion 672, third electrode portion 673.Insulating trip 68
First electrode portion 671 and second electrode portion 672 are covered, so that first electrode portion 671 intermittently exposes in the circumferential, and the
Two electrode portions 672 are intermittently exposed in the circumferential.That is, insulating trip 68 has the multiple hole portion 68a intermittently configured in the circumferential,
First electrode portion 671 and second electrode portion 672 expose from the hole portion 68a of insulating trip 68.Third electrode portion 673 is not by insulating trip
68 are covered.
The part that insulating trip 68 exposes is provided with first resistor body pattern 61 in first electrode portion 671, in second electrode
Portion 672 is provided with second resistance body pattern 62 from the part that insulating trip 68 exposes, and third electrode portion 673 is provided with 3rd resistor
Body pattern 63.
First resistor body pattern 61 is electrically connected via first electrode portion 671 with the first encoder terminal 601 as a result, and second
Resistor body pattern 62 is electrically connected via second electrode portion 672 with second encoder terminal 602, and 3rd resistor body pattern 63 is via
Three electrode portions 673 are electrically connected with third encoder terminal 603.
Fig. 7 is the perspective view from the lower section of code device 6.As shown in fig. 7, the first contact portion of sliding part 66
661 are in position corresponding with first resistor body pattern 61, and the second contact portion 662 of sliding part 66 is in and second resistance body figure
The third contact portion 663 of the corresponding position of case 62, sliding part 66 is in position corresponding with 3rd resistor body pattern 63.
Moreover, passing through the rotation of sliding part 66, the first contact portion 661 replaces with first resistor body pattern 61 and insulating trip 68
Ground contact, the second contact portion 662 are alternately contacted with second resistance body pattern 62 and insulating trip 68.Third contact portion 663 is always
It is contacted with 3rd resistor body pattern 63.That is, pass through the rotation of sliding part 66, the first encoder terminal 601 and third encoder-side
Son 603 is intermittently electrically connected, and second encoder terminal 602 is intermittently electrically connected with third encoder terminal 603.
Fig. 8 is the circuit diagram for showing the equivalent circuit of code device 6.Fig. 9 is the output waveform for showing code device 6
Waveform diagram.As shown in Figure 8 and Figure 9, when the first encoder terminal 601 is electrically connected with third encoder terminal 603, in A point
Electric current is flowed through between C point, a-signal is connected.When second encoder terminal 602 is electrically connected with third encoder terminal 603,
Electric current is flowed through between B point and C point, B signal is connected.
In the clockwise rotation of sliding part 66, the starting point from the disconnection of a-signal is to the starting point that next time disconnects
The rotation angle of sliding part 66 only is 60 °.For B signal and similarly.In addition, the starting point and B of the disconnection about a-signal
The offset of the starting point of the disconnection of signal becomes 15 ° in the rotation angle of sliding part 66.Moreover, rotating a circle in sliding part 66
When (that is, the rotation angle of sliding part 66 is 360 °), the combined variation of the connecting and disconnecting of a-signal and B signal is divided into 24
It is a.That is, can judge, when sliding part 66 rotates a circle, the rotation angle of sliding part 66 changes 15 ° every time.Therefore, by sentencing
The variation of disconnected a-signal and B signal, so as to judge direction of rotation and rotation angle (rotation amount) of sliding part 66.
In addition, as described below, by the waveform and the second contact portion 52 that make the torque of the first contact portion 51
The waveform of torque deviates, so as to increase whole mortise lock number.Figure 10 is the relationship for showing mechanical axis 3 Yu limiting member 5
Top view.As shown in Figure 10, when the protrusion 31 of the first contact portion 51 of limiting member 5 and the outer peripheral surface 30 of mechanical axis 3 contacts,
Second contact portion 52 of limiting member 5 is embedded into the recess portion 32 of the outer peripheral surface 30 of mechanical axis 3.On the other hand, in limiting member 5
When first contact portion 51 is embedded into the recess portion 32 of outer peripheral surface 30 of mechanical axis 3, the second contact portion 52 and mechanical axis of limiting member 5
The protrusion 31 of 3 outer peripheral surface 30 contacts.That is, in the first contact portion 51 and the contact of protrusion 31 and the second contact portion 52 and protrusion 31
Contact between, the phase difference of the rotation angle provided with mechanical axis 3.Moreover, when mechanical axis 3 rotates, the first contact portion 51 with
Second contact portion 52 is alternately embedded into the recess portion 32 of the outer peripheral surface 30 of mechanical axis 3.
Figure 11 A is the variation for showing the torque of the first contact portion 51 and the second contact portion 52 when mechanical axis 3 rotates
Curve graph.As shown in Figure 11 A, with the rotation of mechanical axis 3, the first contact portion 51 and the respective torque of the second contact portion 52 at
To repeat minimum and maximum waveform.For example, passing through the rotation of mechanical axis 3, fought in the protrusion 31 of the outer peripheral surface 30 of mechanical axis 3
The elastic force of first contact portion 51 and by when, torque become maximum.When torque becomes minimum from maximum, user obtains mortise lock
Sense.The torque of first contact portion 51 and the torque of the second contact portion 52 alternately become maximum.
Figure 11 B is to show the torque synthesized to the torque of the first contact portion 51 and the torque of the second contact portion 52
The curve graph of variation.As shown in Figure 11 B, the wavelength for synthesizing the waveform of torque becomes the first contact portion 51 and the second contact portion 52
Twice of wavelength of waveform of each torque.That is, synthesis torque becomes maximum quantity (mortise lock when mechanical axis 3 rotates a circle
Number) it is that the torque of the first contact portion 51 is become to maximum quantity (mortise lock number) and the torque of the second contact portion 52 to become maximum
The quantity that quantity (mortise lock number) is added.
Therefore, by deviating the waveform of the waveform of the torque of the first contact portion 51 and the torque of the second contact portion 52, from
And whole mortise lock number becomes twice of each mortise lock number of the first contact portion 51 and the second contact portion 52.Therefore, even if by machine
Tool axis 3 becomes small-sized, also mortise lock number can be made to increase.
Although in the above-described embodiment, having used the example of resistor body pattern to be said fixed contact component
It is bright, even but fixed contact component itself can also obtain same effect as the mode of supporting mass.For example, can
The component for using resin base material to be impregnated with conductive material instead of the encoder substrate used in the above-described embodiment,
Enumerating specific example is the material for making phenolic resinoid substrate be impregnated with carbon black.
(second embodiment)
Figure 12 is the perspective view for showing the second embodiment of rotary encoder of the invention.Figure 13 is rotary encoder
Exploded perspective view.Figure 14 is the top view of rotary encoder.Mechanical axis, limiting member and the encoder base of second embodiment
The structure of plate is different from the first embodiment.The structure different to this is illustrated below.In addition, in this second embodiment,
Appended drawing reference same as the first embodiment is structure same as the first embodiment, therefore the description thereof will be omitted.
Mechanical axis 3A has operation portion 35, flange part 37 and end 36.36 edge of operation portion 35, flange part 37 and end
Rotary shaft configure in order from the upper side to the lower side.The outer peripheral surface 38 of flange part 37 be provided with it is multiple (in this embodiment for
Two) recess portion 38a.From the end on observation of mechanical axis 3A, the outer peripheral surface 38 of flange part 37 is depicted as having a substantially elliptical.Flange part 37
Outer peripheral surface 38 have minor axis side long side part and major diameter side opposite each other circular arc portion opposite each other.In minor axis side
Each of long side part opposite each other be provided with recess portion 38a.Two recess portion 38a relative to mechanical axis 3A axis each other
It is opposed.Like this, the outer peripheral surface 38 of flange part 37 is the substantially elliptical with necking down.
Limiting member 5A is created as cricoid leaf spring.From the end on observation of mechanical axis 3A, limiting member 5A is formed as big
Cause ellipse.Limiting member 5A has the arc sections opposite each other of the long side part and major diameter side opposite each other of minor axis side
Point.Limiting member 5A connects in each of circular arc portion opposite each other of major diameter side with the first contact portion 51 and second
Point portion 52.First contact portion 51 and the second contact portion 52 are opposite each other relative to the axis of mechanical axis 3A.First contact portion 51 with
And second contact portion 52 along the axial prominent to the side encoder substrate 60A of mechanical axis 3A.The inner peripheral surface 55 of limiting member 5A
Shape is roughly the same with the shape of outer peripheral surface 38 of flange part 37 of mechanical axis 3A, for the substantially elliptical with necking down.It is limiting
The inner peripheral surface 55 of component 5A processed is provided with prominent to radially inner side in each of the long side part opposite each other of minor axis side
Protrusion 55a.Two protrusion 55a are opposite each other relative to the axis of mechanical axis 3A.
The upper surface of encoder substrate 60A is provided with multiple (being in this embodiment 12) protrusion 67a.Protrusion
67a is along the axial prominent to the side limiting member 5A of mechanical axis 3A.Multiple protrusion 67a are centered on the axis of mechanical axis 3A, in week
It is spaced apart each other upwards to be arranged.Recess portion 67b is provided between adjacent protrusion 67a.
Limiting member 5A is positioned in the circumferential relative to mechanical axis 3A, and can move in the axial direction (can on move down
It is dynamic).It illustrates as the flange part 37 of mechanical axis 3A is entrenched in the inner peripheral surface 55 of limiting member 5A.The inner circumferential of limiting member 5A
The protrusion 55a in face 55 is engaging in the recess portion 38a of the flange part 37 of mechanical axis 3A.Limiting member 5A is relative to mechanical axis 3A as a result,
It fixes in the circumferential.In addition, the circular arc of the outer peripheral surface 38 in the circular arc portion and flange part 37 of the inner peripheral surface 55 of limiting member 5A
Gap is provided between part.Limiting member 5A is not fixed in the axial direction relative to mechanical axis 3A as a result,.Like this, structure is limited
Part 5A is not fixed as one with any part by welding, riveting, Nian Jie etc..
Limiting member 5A is positioned in the axial direction of mechanical axis 3A by shell 2 shown in FIG. 1 so that not with encoder
Substrate 60A separation.As a result, by rotating mechanical axis 3A, so that limiting member 5A rotates together with mechanical axis 3A, the first contact
Portion 51 and the second contact portion 52 will be alternately positioned in the protrusion 67a and recess portion 67b of encoder substrate 60A.It illustrates to lead to
Cross limiting member 5A rotation, thus positioned at recess portion 67b the first contact portion 51 by the flexible deformation of limiting member 5A with
Protrusion 67a is crossed while the 67a sliding contact of protrusion, is embedded into the recess portion 67b adjacent with protrusion 67a.Second contact portion 52
It is acted in the same manner as the first contact portion 51.First contact portion 51 and the second contact portion 52 are embedded into different recess portion 67b simultaneously.Cause
This, so that limiting member 5A crosses protrusion 67a and is embedded into recess portion 67b, generates insert as a result, by rotating limiting member 5A
Lock sense.
In addition, the purpose that mechanical axis 3A is pressed for the electric conductor 71 to switching mechanism 7, under having axially upward
The function of the distance of stroke about 0.15mm.Because limiting member 5A is blocked in a rotational direction relative to mechanical axis 3A
It closes, so limiting member 5A is not displaced in the up-down direction.Therefore, will not due to mechanical axis 3A upper and lower stroke and make to limit
Loading-placement property (spring performance) of component 5A processed deteriorates.Therefore, even if making mechanical axis 3A carry out stroke to upper and lower, also not
The load of up and down direction can be applied to limiting member 5A.
In addition, by adjusting the quantity for the limiting member 5A for being assembled into mechanical axis 3A, it is desired strong so as to select
The mortise lock sense of degree.That is, by the number for the limiting member 5A for increasing the axial overlap along mechanical axis 3A, it is slotting so as to enhance
Lock sense.
Here, replacing the number of adjustment limiting member 5A can also adjust by adjusting the thickness of a limiting member 5A
The intensity of mortise lock sense.But when the thickness of a limiting member 5A thickens, following disadvantage can be generated, that is, for by repeatedly into
Row crosses the protrusion 67a of encoder substrate 60A and drops into " fatigue rupture " caused by the movement of recess portion 67b, and limit reduces.
That is, the destruction service life of limiting member 5A can shorten.
Therefore, by being overlapped multiple thin " limiting member 5A ", so as to obtain following effect, that is, broken in endurance
In bad viewpoint, the height that the limit of fatigue rupture can be maintained, and spring loading can be further increased.
In addition, being provided in the appended claims the present invention is not limited to above-mentioned embodiment not departing from
The scope of the present invention in the range of, various changes can be applied.For example, shell, limiting member are not limited to above-mentioned
Shell, the limiting member recorded in embodiment are able to use various well-known shells, limiting member.
Description of symbols
1: rotary encoder；
2: shell；
22: side wall；
22a: hole portion (switch fixed part)；
22b: groove portion (encoder fixed part)；
22c: engaging portion；
23: prominent wall (encoder fixed part)；
24: tab (encoder fixed part)；
3,3A: mechanical axis；
30: the outer peripheral surface of gear-like；
31: protrusion；
32: recess portion；
37: flange part
38: outer peripheral surface
38a: recess portion
5,5A: limiting member；
51: the first contact portions；
52: the second contact portions；
55: inner peripheral surface；
55a: protrusion；
6: code device；
60,60A: encoder substrate；
61,62,63: resistor body pattern (fixed contact component)；
601,602,603: encoder terminal；
65: rotor；
651: length-diameter part；
652: narrow section；
66: sliding part；
67a: protrusion；
67b: recess portion；
7: switching mechanism；
70: switch substrate；
71: electric conductor；
701,702,703: switch terminal.
Claims (3)
1. a kind of rotary encoder, comprising:
Mechanical axis；
The mechanical axis can be rotated and can be kept up or down with insert state by code device, and described in detection
The direction of rotation of mechanical axis and rotation angle；
Limiting member limits the rotation angle of the mechanical axis；And
Switching mechanism is inserted through the end pressing of the mechanical axis of the code device, wherein
The code device includes rotor, can integrally rotatably be assemblied in the mechanical axis with the mechanical axis；Sliding
Part is assemblied in the rotor；And fixed contact component, for the sliding part sliding contact,
The code device and the switching mechanism are configured as: the sliding part is located at more to be leaned on than the fixed contact component
The switching mechanism side,
The code device has encoder substrate,
The mechanical axis is maintained at the hole portion of the encoder substrate with the state of inserting,
The first face of the encoder substrate is arranged in the limiting member,
The second face of the encoder substrate is arranged in the fixed contact component,
The sliding part and the switching mechanism are located at second surface side of the encoder substrate.
2. rotary encoder according to claim 1, wherein
The fixed contact component is resistor body pattern.
3. rotary encoder according to claim 1, wherein
The mechanical axis can be moved up and down relative to the rotor.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015071586 | 2015-03-31 | ||
| JP2015-071586 | 2015-03-31 | ||
| JP2015079421 | 2015-04-08 | ||
| JP2015-079421 | 2015-04-08 | ||
| PCT/JP2016/052744 WO2016157981A1 (en) | 2015-03-31 | 2016-01-29 | Rotary encoder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107408473A CN107408473A (en) | 2017-11-28 |
| CN107408473B true CN107408473B (en) | 2019-09-24 |
Family
ID=57005580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680015627.1A Active CN107408473B (en) | 2015-03-31 | 2016-01-29 | Rotary encoder |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6406434B2 (en) |
| CN (1) | CN107408473B (en) |
| TW (1) | TWI588449B (en) |
| WO (1) | WO2016157981A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI645163B (en) * | 2016-10-18 | 2018-12-21 | 日商村田製作所股份有限公司 | Rotary encoder and method for manufacturing coding mechanism of rotary encoder |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55169805U (en) * | 1979-05-25 | 1980-12-05 | ||
| JPH0817293A (en) * | 1994-07-04 | 1996-01-19 | Matsushita Electric Ind Co Ltd | Rotary operation type electronic part provided with push switch |
| JP2004212374A (en) * | 2002-11-14 | 2004-07-29 | Alps Electric Co Ltd | Rotary sensor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3896213B2 (en) * | 1998-05-25 | 2007-03-22 | アルプス電気株式会社 | Composite operation type electric parts |
| JP2004178989A (en) * | 2002-11-27 | 2004-06-24 | Teikoku Tsushin Kogyo Co Ltd | Rotary switch |
| JP2007136029A (en) * | 2005-11-22 | 2007-06-07 | Toray Ind Inc | Fiber sheet, its manufacturing method and air filter |
| JP4241798B2 (en) * | 2006-10-11 | 2009-03-18 | ホシデン株式会社 | Rotary pulse switch |
| JP5735396B2 (en) * | 2011-10-28 | 2015-06-17 | 帝国通信工業株式会社 | Rotating electronic components |
| JP6043953B2 (en) * | 2012-08-03 | 2016-12-14 | パナソニックＩｐマネジメント株式会社 | Rotating electronic components |
-
2016
- 2016-01-29 JP JP2017509331A patent/JP6406434B2/en active Active
- 2016-01-29 CN CN201680015627.1A patent/CN107408473B/en active Active
- 2016-01-29 WO PCT/JP2016/052744 patent/WO2016157981A1/en active Application Filing
- 2016-03-28 TW TW105109735A patent/TWI588449B/en active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55169805U (en) * | 1979-05-25 | 1980-12-05 | ||
| JPH0817293A (en) * | 1994-07-04 | 1996-01-19 | Matsushita Electric Ind Co Ltd | Rotary operation type electronic part provided with push switch |
| JP2004212374A (en) * | 2002-11-14 | 2004-07-29 | Alps Electric Co Ltd | Rotary sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016157981A1 (en) | 2016-10-06 |
| CN107408473A (en) | 2017-11-28 |
| TW201636578A (en) | 2016-10-16 |
| JP6406434B2 (en) | 2018-10-17 |
| JPWO2016157981A1 (en) | 2017-12-28 |
| TWI588449B (en) | 2017-06-21 |
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