CN101826772A - Gearmotor - Google Patents
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- CN101826772A CN101826772A CN201010134600A CN201010134600A CN101826772A CN 101826772 A CN101826772 A CN 101826772A CN 201010134600 A CN201010134600 A CN 201010134600A CN 201010134600 A CN201010134600 A CN 201010134600A CN 101826772 A CN101826772 A CN 101826772A
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- 230000005291 magnetic effect Effects 0.000 claims abstract description 220
- 230000005540 biological transmission Effects 0.000 claims description 18
- 238000003466 welding Methods 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 31
- 239000000758 substrate Substances 0.000 description 19
- 230000008447 perception Effects 0.000 description 11
- 150000001875 compounds Chemical class 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 6
- 230000000994 depressogenic effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 230000027455 binding Effects 0.000 description 4
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- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 230000008901 benefit Effects 0.000 description 1
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Abstract
A kind of gearmotor, the detection error of the position of rotation by the output link that will cause because of the direction of rotation difference is suppressed to the less accuracy of detection that improves the position of rotation of output link.The said gear drive motor comprises: motor (10); Accept to transmit the output link (14) of the actuating force of next above-mentioned motor (10) by gear train (12); Be used to detect the magnetic detecting element (16) of the position of rotation of this output link (14); And the magnetic (18) paired with this magnetic detecting element (16), above-mentioned output link (14) is provided with: input part (141), and the actuating force that is passed to the above-mentioned motor of said gear system (12) is imported this input part (141); Efferent (142), the actuating force that is imported into the above-mentioned motor of above-mentioned input part (141) outputs to this efferent (142); And extension (143), this extension (143) is more outstanding towards radial outside than above-mentioned input part (141) and above-mentioned efferent (142), is fixed with any one in above-mentioned magnetic detecting element (16) and the above-mentioned magnetic (18) near the outer wall radially of above-mentioned extension (143).
Description
Technical field
The present invention relates to a kind of gearmotor, more specifically, relate to and comprise the gearmotor that is used to detect by the magnetic of the magnetic detecting element of the position of rotation of electric motor driven output link and this magnetic detecting element institute perception.
Background technology
Such as patent documentation 1 record, known have the rotary power of the motor gearmotor by a plurality of gears outputs.The gearmotor that patent documentation 1 is put down in writing with the integrally formed driven gear of output shaft (output link) in be embedded with magnet and on position on the other side configuration be installed on magnetic detecting element on the substrate, thereby can detect the position of rotation of output shaft.
The driven gear of above-mentioned list of references 1 reduces as the intensity of the tooth portion of the input part of transmission of power in order to prevent, makes magnet leave tooth portion and is arranged on the inboard of driven gear.In addition, owing to make magnet leave tooth portion, thus therefore near the situation that makes the magnet positions skew of being out of shape because of the suffered stress of tooth portion of tooth portion can not take place.
Patent documentation 1: the Japan Patent spy opens the 2004-229378 communique
Yet the gearmotor of patent documentation 1 is compared at the gearmotor in the driven gear outside with configurations of magnets, exists the difference according to above-mentioned rotation direction to make first problem that error increases that detects.In addition, as patent documentation 1 that driven gear and output shaft is integrally formed and constitute under the situation of transmission member, export by output shaft from the power from motor side of tooth portion input.Therefore, as patent documentation 1, magnet is being arranged on half-way, promptly is being arranged under the situation of half-way of power transfer path from tooth portion to output shaft, there is the second following problem, promptly, when not shown driven member is subjected to big stress, also can be subjected to big stress between the tooth portion of driven gear and output shaft, make the output shaft that is provided with magnet and the half-way distortion of tooth portion, magnet positions changes, accuracy of detection reduces thereby make.
At this,, adopt Figure 10 to be elaborated following for first problem.In addition, Figure 10 is the problem for the gearmotor that patent documentation 1 is described, makes the turn clockwise different key diagram in magnet detection position of when being rotated counterclockwise magnetic detecting element of output shaft (output link) and be used for explanation.
For example, when the magnetic field that is produced by magnet 72 when being as shown in figure 10 magnetic field MF (this shape only is illustration), the position that can detect magnet 72 by magnetic detecting element 70 is the outermost magnetic line of force position overlapped of test point P and magnetic field MF shown in Figure 10.At this, be that the center turns clockwise not shown output shaft as if some C with Figure 10, then magnet 72 turns clockwise.At this moment, locate to detect on the position overlapped magnet 72 at the outermost magnetic line of force of test point P and magnetic field MF in the left side of Figure 10 (central shaft A takes back).On the contrary, if not shown output shaft is rotated counterclockwise, then magnet 72 is rotated counterclockwise.At this moment, locate to detect on the position overlapped magnet 72 at the outermost magnetic line of force of test point P and magnetic field MF in the right side of Figure 10 (central shaft A takes over).That is to say that the detection position by magnetic detecting element 70 detected magnets 72 can be according to the difference of the direction of rotation of output shaft (magnet 72) and on left side or the right side of central shaft A.Consequently, make turn clockwise when the being rotated counterclockwise detection position of the magnet of magnetic detecting element of output shaft exist very big different.
Compare as can be known with being arranged on the relative situation of (Figure 10 (b)) in the outer part by the situation that magnet 72 is arranged on relatively in the inner part (Figure 10 (a)), the detection error of the side-play amount of the detection position of the magnet on the direction of rotation of the above-mentioned output shaft when magnet 72 is arranged on the inboard (magnet 72) (following only being called detected error) when being arranged on the outside than magnet 72 is big.Promptly, because in Figure 10 (a), the angle that the straight line of the straight line of point of contact C and test point P and point of contact C and detection bodies 72 intersects is bigger, and in Figure 10 (b), the angle that the straight line of the straight line of point of contact C and test point P and point of contact C and detection bodies 72 intersects is less, so the detection error ratio magnet 72 that produces because of the difference of the direction of rotation of output shaft (magnet 72) when being arranged on the inboard of magnet 72 is big when being arranged on the outside.
Summary of the invention
In view of the above problems, it is a kind of in as the output link that will transmit the transmission member that the actuating force of coming exports that technical problem to be solved by this invention is to provide, and the detection error of the position of rotation by the output link that will cause because of the direction of rotation difference is suppressed to the gearmotor of the accuracy of detection of the less position of rotation that improves output link.
For solving the problems of the technologies described above, gearmotor of the present invention comprises: motor; The output link of the actuating force output of the actuating force of the above-mentioned motor of acceptance and the above-mentioned motor that will transmit by the gear train transmission; Be used to detect the magnetic detecting element of the position of rotation of this output link; And the magnetic paired with this magnetic detecting element, it is characterized in that, in the above-mentioned output link, be provided with by integrally formed: input part, the actuating force that is passed to the above-mentioned motor of said gear system is imported above-mentioned input part; Efferent, the actuating force that is imported into the above-mentioned motor of above-mentioned input part outputs to above-mentioned efferent; And extension, this extension is more outstanding towards radial outside than above-mentioned input part and above-mentioned efferent, is fixed with any one in above-mentioned magnetic detecting element and the above-mentioned magnetic near the outer wall radially of above-mentioned extension.
According to gearmotor of the present invention, on output link, be formed with input motor actuating force input part and be used for the actuating force of motor is delivered to the efferent of driven member, and be provided with than above-mentioned input part and efferent more towards the outstanding extension of radial outside by integrally formed.Therefore, any one that can will be used for detects the magnetic detecting element of position of rotation of output link and magnetic is fixed near the outer wall radially of above-mentioned side-prominent outwardly extension, and the detection error of the position of rotation of the output link that the direction of rotation difference because of output link can be caused is suppressed to less by this.In addition, because even magnetic is set at the extension of the outer fix of also less input part of deflection when being positioned at output link and being subjected to big power and efferent, rather than the half-way of input part and efferent, therefore the change in location of magnetic can be suppressed to less.Therefore, and compare, can improve the accuracy of detection of the position of rotation of output link as the situation at the power transfering part of outer circumferential side setting as the tooth portion of gear of output link the prior art.And, owing on output link, be provided with input part, efferent and extension in one piece, therefore can reduce component count.
In addition, in the present invention, comparatively it is desirable to, above-mentioned input part and above-mentioned efferent upwards are arranged at overlapped position in the footpath of above-mentioned output link.If constitute as mentioned above, then can make output link dwindle diametrically input part and efferent diametrically overlapping amount.Especially, (in the rotating shaft) is provided with above-mentioned efferent on the axis of above-mentioned input part if constitute, and then can make input part and efferent radially near configuration, and output link is dwindled diametrically.
And, in the present invention, comparatively it is desirable to, above-mentioned extension is located on the axis direction of above-mentioned output link and above-mentioned input part or above-mentioned efferent position overlapped.If constitute as mentioned above, then owing on the axis direction of output link, be arranged to above-mentioned input part or above-mentioned efferent overlapping by any one the extension that will be fixed with in magnetic detecting element and the magnetic, size on the axis direction of output link is dwindled, therefore the size that can further reduce gearmotor.Especially, if above-mentioned magnetic detecting element or above-mentioned magnetic are located at and above-mentioned input part or above-mentioned efferent position overlapped, then can further dwindle the size on the axis direction of output link on the axis direction of above-mentioned output link.
And, in the present invention, comparatively it is desirable to, on the axis direction of above-mentioned output link, have towards the hole portion of a side opening with towards the hole portion of opposite side opening, be formed with above-mentioned input part towards the hole portion of an above-mentioned side opening and be formed with above-mentioned efferent towards the hole portion of above-mentioned opposite side opening, be formed with extension towards the hole portion of an above-mentioned side opening or towards the radial outside of the hole portion of above-mentioned opposite side opening, above-mentioned magnetic detecting element or above-mentioned magnetic are located on the axis direction of above-mentioned output link and the hole portion of an above-mentioned side or the hole portion position overlapped of above-mentioned opposite side.According to said structure, because by being formed with the hole portion of input part and efferent at the fixing radially inner side of the extension of magnetic detecting element or magnetic, can with magnetic detecting element or magnetic output link axially on be arranged to input part or efferent overlappingly, therefore can dwindle the size on the axis direction of output link.
In addition, in the present invention, comparatively it is desirable to, be connected to each other and run through the through hole of above-mentioned output link along axis direction towards the hole portion of an above-mentioned side opening with towards the hole portion of above-mentioned opposite side opening.If constitute as mentioned above, then input part and efferent can be disposed along axis direction is approaching.Promptly, by between input part and efferent, not forming the wall portion of heavy wall, the outlet side member that can make the input side member that engages with hole portion as input part and engage with hole portion as efferent near configuration, and can make the amount of the dimension reduction wall portion of gearmotor along axis direction.
In addition, when above-mentioned magnetic detecting element and above-mentioned magnetic relatively dispose on above-mentioned axis direction, be preferably, be formed with recess at above-mentioned extension, this recess have any one institute in above-mentioned magnetic detecting element and the above-mentioned magnetic butt with bearing surface above-mentioned axis normal.
When be magnetic detecting element with magnetic on axis direction during relative structure, magnetic detecting element depends on both intervals on axis direction to the detection sensitivity of magnetic, but according to said structure, because any one in magnetic detecting element and the magnetic is with relative with another by the state of the bearing surface of recess location, therefore the two deviation at interval of each product can be suppressed, thereby the little gearmotor of accuracy of detection deviation between product can be made.
In addition, at this moment above-mentioned extension is formed by resin, and the peristome of above-mentioned recess seals by thermofussion welding and gets final product.
As mentioned above, if adopt thermofussion welding to seal the opening of recess, then in magnetic detecting element and the magnetic any one can be fixed in extension simply.
In addition, be preferably, above-mentioned extension is formed with a pair of tongue piece, and this a pair of tongue piece is from the outstanding toward the outer side also above-mentioned magnetic detecting element of clamping of outside wall surface of above-mentioned extension and any one the above-mentioned magnetic.
By above-mentioned tongue piece is set, in magnetic detecting element and the magnetic any one can be arranged on more radial outside by output link.Therefore, the detection of the position of rotation of the output link that can will cause because of the direction of rotation difference of the output link outside is suppressed to littler.In addition, be equivalent to the part that the front end of a pair of tongue piece is separated from each other, need not to form the wall portion of heavy wall in the radially outermost periphery of magnetic by the radially most external that magnetic is fixed into magnetic.According to said structure, the structure that is embedded in extension with magnetic is compared, and can dwindle the radial dimension of extension.
According to gearmotor of the present invention, on output link, be formed with input motor actuating force input part and be used for the actuating force of motor is delivered to the efferent of driven member, and be provided with than above-mentioned input part and efferent more towards the outstanding extension of radial outside by integrally formed.Therefore, any one that can will be used for detects the magnetic detecting element of position of rotation of output link and magnetic is fixed near the outer wall radially of above-mentioned side-prominent outwardly extension, and the detection error of the position of rotation of the output link that the direction of rotation difference because of output link can be caused is suppressed to less by this.In addition, because even magnetic is set at the extension of the outer fix of also less input part of deflection when being positioned at output link and being subjected to big power and efferent, rather than the half-way of input part and efferent, therefore the change in location of magnetic can be suppressed to less.Therefore, and compare, can improve the accuracy of detection of the position of rotation of output link as the situation at the power transfering part of outer circumferential side setting as the tooth portion of gear of output link the prior art.And, owing on output link, be provided with input part, efferent and extension in one piece, therefore can reduce component count.
Description of drawings
Fig. 1 is the outside drawing (take off upper shell after state) of the gearmotor of present embodiment.
Fig. 2 is the outside drawing of observing gearmotor shown in Figure 1 from the side (takes off upper shell and lower house after state).
Fig. 3 is the exploded perspective view of gearmotor illustrated in figures 1 and 2.
Fig. 4 (a) is an outside drawing of observing output link from the efferent side, and Fig. 4 (b) is an outside drawing of observing output link from the input part side.
Fig. 5 is that expression is taken off the vertical view of the state behind upper casing and the output link from Fig. 1～gearmotor shown in Figure 3.
Fig. 6 is the variation of the included output link of the gearmotor of Fig. 1～shown in Figure 3, and Fig. 6 (a) is illustrated in the state that magnetic is installed on the output link, and Fig. 6 (b) is illustrated in the state that magnetic is not installed on the output link.
Fig. 7 is the schematic diagram (embodiment 1) of the stop position of the output link on substrate when selecting a magnetic fixing hole to fix magnetic from four magnetic fixing holes of the extension that is formed at output link.
Fig. 8 is the schematic diagram (embodiment 2) of the stop position of the output link on substrate when two magnetic fixing holes on the selection diameter fix magnetic from four magnetic fixing holes of the extension that is formed at output link.
Fig. 9 is the schematic diagram (embodiment 3) of the stop position of the output link on substrate when being chosen in two adjacent on circumference magnetic fixing holes fixing the N utmost point magnetic relative with magnetic detecting element and the S utmost point magnetic relative with magnetic detecting element from four magnetic fixing holes of the extension that is formed at output link.
Figure 10 is the problem for the gearmotor that patent documentation 1 is described, makes the turn clockwise different key diagram in magnet detection position of when being rotated counterclockwise magnetic detecting element of output shaft (output link) and be used for explanation.
(symbol description)
1 gearmotor
10 motor
12 gear trains
14 output links
141 input parts
142 efferents
143 extensions
144 magnetic fixing holes (recess)
144b bottom surface (bearing surface)
16 magnetic detecting elements
18 magnetics
Embodiment
Below, with reference to accompanying drawing embodiments of the present invention are elaborated.Fig. 1 is the outside drawing (take off upper shell 91 after state) of the gearmotor 1 of present embodiment, and Fig. 2 is the outside drawing of observing gearmotor 1 from the side (takes off upper shell 91 and lower house 92 after state).Fig. 3 is the exploded perspective view of gearmotor 1.
The gearmotor 1 of present embodiment comprises: as the motor 10 of drive source; Be delivered to the gear train 12 of output link 14 after the speed reducing ratio deceleration of rotation with motor 10 with regulation; To transmit the output link 14 of the rotation of the motor 10 that comes by gear train 12 towards driven member output; Be used to detect the magnetic detecting element 16 of the position of rotation of output link 14; And paired, and be fixed in the magnetic (magnet) 18 of output link 14 with this magnetic detecting element 16.
Said gear system 12 is specifically described the large diameter gear 122a engagement of first gear 121 and second gear 122.The large diameter gear 123a engagement of the small-diameter gear 122b of second gear 122 and the 3rd gear 123.The large diameter gear 124a engagement of the small-diameter gear 123b of the 3rd gear 123 and the 4th gear 124.In addition, on the 4th gear 124, be formed with sun gear 124b coaxially, this sun gear 124b and planetary gear 126 engagements with large diameter gear 124a.Fixed gear 127 is formed with internal gear 127a at inner peripheral surface, this internal gear 127a and planetary gear 126 engagements.In addition, fixed gear 127 has: motor support 127b, the side of this motor support 127b supporting motor 10; Projection (not shown), this projection is used for fixing substrate 20; And the 127c of substrate supporting portion, this 127c of substrate supporting portion supporting substrates 20 is to suppress substrate 20 deflections.In addition, sun gear 124b, planetary wheel carrier 125, planetary gear 126 and internal gear 127a have constituted planetary gears.
The power of motor 10 is passed to rotation transmission member 13 by gear train 12.Rotation transmission member 13 has: main part 131; From main part 131 axle 132 outstanding towards the below; And with this 132 outstanding splined shaft 133 towards the top on the contrary.Axle 132 is inserted and to be led at the through hole 124c that is formed at the 4th gear 124 and be formed in the through hole 125a of planetary wheel carrier 125.In addition, be formed with not shown internal tooth at the inner peripheral surface of main part 131, this internal tooth by with planetary gear 126 engagements, the transmission of power that makes motor 10 is to rotation transmission member 13.
The rotation transmission member 13 of Gou Chenging utilizes splined shaft 133 with output link 14 engagings as mentioned above.Fig. 4 amplifies the enlarged drawing of back expression with output link 14.At this, Fig. 4 (a) is an outside drawing of observing output link 14 from efferent 142 sides, and Fig. 4 (b) is an outside drawing of observing output link 14 from input part 141 sides.In addition, Fig. 4 (a) expression output link 14 is not fixed with the state of magnetic 18 as yet.
At this, the input part 141 of present embodiment and efferent 142 are respectively formed at towards the hole portion of a side opening of the axis direction of output link 14 with towards the hole portion of the opposite side opening of the axis direction of output link 14.Therefore because input part 141 and efferent 142 are arranged at the position that upwards overlaps each other in the footpath of output link 14, thereby can make output link 14 dwindle diametrically input part 141 and efferent 142 diametrically overlapping amount.And present embodiment (in rotating shaft) on the axis of input part 141 is provided with efferent 142.Therefore, can make the approaching diametrically configuration of input part 141 and efferent 142, thereby output link 14 is further dwindled diametrically.
Above-mentioned extension 143 is approximate on circumference equally spaced to be formed with four magnetic fixing holes cylindraceous (being equivalent to the recess among the present invention) 144, and any one internal fixation in above-mentioned magnetic fixing hole 144 has the magnetic 18 of cylindrical shape.Magnetic 18 multipotencys are fixed four, its specify after narrate.Magnetic fixing hole 144 be along the axis direction of output link 14 extend and be formed with the side opening on the axis direction peristome 144a and with the recess of the bottom surface 144b (being equivalent to the bearing surface among the present invention) of the axis normal of output link 14.In addition, peristome 144a on the axis direction of output link 14 towards efferent 142 side openings.
The magnetic 18 of present embodiment is formed and forms cylindric that magnetic fixing hole 144 cylindraceous is rotatably assorted, and the N utmost point and S utmost point the two poles of the earth in the axial direction are magnetized out.In addition, magnetic 18 is inserted magnetic fixing hole 144 from peristome 144a, and with the N utmost point and S in extremely any utmost point and the state of bottom surface 144b butt fix.
In addition, extension 143 forms with the size (width) more than the twice of the diameter of magnetic 18 diametrically, and magnetic fixing hole 144 is configured in than input part (splined hole) 141 and efferent (link and use the hole) 142 and more leans on radial outside.Therefore because magnetic fixing hole 144 is not arranged on the half-way of power transfer path, even thereby when not shown driven member is subjected to very big stress, magnetic fixing hole 144 can not be subjected to very big stress yet.Therefore, the change in location of magnetic 18 can be suppressed to less.In addition, the internal diameter of the large-diameter portion 141a of the internal diameter of the cylindrical portion 142b of efferent (linking with hole 142) and input part (splined hole) 141 forms roughly the same diameter.
And in the present embodiment, near the fixed magnetic body 18 outer wall 143a of extension 143 makes in magnetic 18 integral body and is located at extension 143 as shown in Figure 4.Particularly, the outer wall 143a of the radially outermost outer wall 18c of magnetic 18 and extension 143 is near configuration.On the other hand, the radially inner most outer wall 18d of magnetic 18 be configured in than the radical length from the inwall of cylindrical portion 142b to the outer wall 143a of extension 143 1/2 more by the outer wall 143a side of extension 143.Therefore, magnetic 18 be configured in than from the inwall of the cylindrical portion 142b of efferent (link use hole) 142 in the zone of 1/2 more outer wall 143a side of the radical length of the outer wall 143a of extension 143.
As the fixing means of magnetic 18, owing to come the method for sealed open portion reliably and easily magnetic 18 to be sealed in magnetic fixing hole 144 by thermofussion welding, thereby comparatively desirable.Also can adopt at insertion magnetic 18 back inflow molten resins and come methods such as the 144a of sealed open portion.
In addition, in the present embodiment, efferent 142 utilizes the part at cylindrical portion 142b as shown in Figure 4 towards the slot part 142a that radial outside forms transmission of power to be arrived driven member, but this structure only is an illustration.For example, also can be the structure that waits transferring power and so on by serration, D shape cutting (D cutting).In addition, input part 141 also can be the serration hole.
In the present embodiment, extension 143 is formed on the axis direction of output link 14 and input part (splined hole) 141 and efferent (link and use the hole) 142 position overlapped.Especially, in the present embodiment, with connected to each other and become the through hole that output link 14 is run through on axis direction with the hole, be provided with magnetic 18 as the splined hole of input part 141 at the radial outside of the coupling position of input part (splined hole) 141 and efferent (hole is used in binding) 142 as the binding of efferent 142.Therefore, magnetic 18 is set on axis direction and input part (splined hole) 141 and efferent (link and use the hole) 142 both position overlapped.As mentioned above, because it is overlapping magnetic 18 to be arranged in upward axial and input part (splined hole) 141 and efferent (link and use the hole) 142 of output link 14, so the size on axis direction that can dwindle output link 14.
In addition, in the present embodiment, the magnetic detecting element 16 that perception is fixed on the magnetic 18 on the output link 14 is arranged on the substrate 20 that is installed between rotation transmission member 13 and the output link 14.Fig. 5 is the state behind upper shell 91 and the output link 14 is taken off in expression from gearmotor 1 a vertical view.As shown in Figure 5, the central authorities of substrate 20 are formed with for the splined shaft 133 of rotation transmission member 13 and insert logical through holes 201, and the end of substrate 20 is formed with and is used for the portion of terminal 202 that is connected with not shown control unit etc.
In the present embodiment, two magnetic detecting elements 16 are arranged on the substrate 20 and with portion of terminal 202 and are electrically connected, so that these two magnetic detecting elements 16 are relative on axis direction with the extension 143 of output link 14.
The member of formation of this gearmotor 1 is accommodated in the housing that is made of upper shell 91 and lower house 92.Lower house 92 is formed with the axle of the projection of supporting motor 10 and rotatably mounted second gear 122, the 3rd gear 123, the 4th gear 124.Upper shell 91 is formed with inserting hole 91b, and this inserting hole 91b inserts logical for the cylindrical portion that is formed with efferent 142 of output link 14.In addition, by fastening sheet 91a that will be formed at upper shell 91 and the fastening hole 92a fastening that is formed at lower house 92 above-mentioned each member of formation is housed in the housing.
In the action of said gear drive motor 1, utilize magnetic detecting element 16 to come perception to be fixed in the magnetic 18 of output link 14.The signal that the not shown control unit that is electrically connected with gearmotor 1 produces based on magnetic detecting element 16 perception magnetics 18 is discerned the position of rotation of output link 14.
Below, the detection form of the position of rotation of concrete output link 14 is described.Fig. 7 is the figure of the stop position of the output link 14 on the substrate 20 when schematically representing from four magnetic fixing holes to select a magnetic fixing hole to fix magnetic 18.Fig. 8 is the figure of the stop position of the output link 14 on the substrate 20 when schematically representing from four magnetic fixing holes to select two magnetic fixing holes on the diameter to fix magnetic 18.Fig. 9 is the figure of the stop position of the output link 14 on the substrate 20 when schematically representing to be chosen in two adjacent on circumference magnetic fixing holes fixing the N utmost point magnetic 18a relative with magnetic detecting element 16a ', 16b ' and the S utmost point magnetic 18b relative with magnetic detecting element 16a ', 16b ' from four magnetic fixing holes.In addition, in Fig. 7～Fig. 9, the angle of the first position of output link 14 is made as 0 degree (benchmark angle).
At first first embodiment shown in Figure 7 is described, as shown in the figure, substrate 20 respectively 0 the degree position and 180 the degree positions be provided with magnetic detecting element 16a, 16b, the extension 143 of output link 14 is equipped with a magnetic 18.In addition, when output link 14 is positioned at position shown in Fig. 7 (a), magnetic detecting element 16a sends signal, the anglec of rotation that detects output link 14 is 0 degree, when output link 14 is positioned at position shown in Fig. 7 (c), magnetic detecting element 16b sends signal, and the anglec of rotation that detects output link 14 is 180 degree, can detect the position of rotation of output link 14 every 180 degree.
Then second embodiment shown in Figure 8 is described, as shown in the figure, substrate 20 respectively 0 the degree position and 90 the degree positions be provided with magnetic detecting element 16a, 16b, the extension 143 of output link 14 is equipped with two magnetics 18 on diameter.In addition, when output link 14 is positioned at position shown in Fig. 8 (a) and Fig. 8 (c), the signal of perception magnetic is arranged and magnetic detecting element 16b no signal according to magnetic detecting element 16a, the anglec of rotation that detects output link 14 is 0 degree or 180 degree.And when output link 14 was positioned at position shown in Fig. 8 (b) and Fig. 8 (d), according to magnetic detecting element 16a no signal and magnetic detecting element 16b has the signal of perception magnetic, the anglec of rotation that detects output link 14 was 90 degree or 270 degree.Therefore, if carry out the differentiation of 0 degree and 180 degree and the differentiation of 90 degree and 270 degree, then just can detect the position of rotation of output link 14 every 90 degree in the control side.Differentiation need be considered to carry out after the direction of rotation of the initial installation site of magnetic for example and output link 14.
At last the 3rd embodiment shown in Figure 9 is described, as shown in the figure, substrate 20 respectively 0 the degree position and 180 the degree positions be provided with magnetic detecting element 16a ', the 16b ' that can differentiate magnet polarity, the extension 143 of output link 14 be equipped with the magnetic 18 relative with magnetic detecting element 16a ', 16b ' with the N utmost point and from the installation site of magnetic 18a towards the locational S utmost point magnetic 18bs relative of 90 degree that rotate in a circumferential direction with magnetic detecting element 16a ', 16b ', spend the position of rotation that just can detect output link 14 every 90.
Particularly, when output link 14 is positioned at position shown in Fig. 9 (a), the signal of perception N utmost point magnetic is arranged and magnetic detecting element 16b ' no signal according to magnetic detecting element 16a ', the anglec of rotation that detects output link 14 is 0 degree.When output link 14 was positioned at position shown in Fig. 9 (b), according to magnetic detecting element 16a ' no signal and magnetic detecting element 16b ' has the signal of perception S utmost point magnetic, the anglec of rotation that detects output link 14 was 90 degree.When output link 14 was positioned at position shown in Fig. 9 (c), according to magnetic detecting element 16a ' no signal and magnetic detecting element 16b ' has the signal of perception N utmost point magnetic, the anglec of rotation that detects output link 14 was 180 degree.In addition, when output link 14 is positioned at position shown in Fig. 9 (d), the signal of perception S utmost point magnetic is arranged and magnetic detecting element 16b ' no signal according to magnetic detecting element 16a ', the anglec of rotation that detects output link 14 is 270 degree.
In addition, the installation number of magnetic 18 and installation site can also freely be selected from four magnetic fixing holes that roughly equally spaced form on the circumference of extension 143 except the embodiment 1～3 of Fig. 7～Fig. 9.Based on the position of rotation of above-mentioned output link 14, the rotation that utilizes control unit control motor 10 is so that driven member is positioned at assigned position.
The gearmotor 1 of this embodiment can be applicable to the situation that for example makes the valve driving that opens and closes stream.When embodiment 1 shown in Figure 7, becoming when 0 spends with the valve setpoint of output link 14 bindings is closed condition, is open mode when 180 spend, and freely controls the switching of stream by this by the energy of rotation of control motor 10.At this moment, the position of two magnetic detecting element 16a, 16b is at the two ends of the driving scope of output link 14.In addition, when embodiment shown in Figure 82 and embodiment 3 shown in Figure 9, drive and the valve that just can detect output link 14 bindings of position of rotation as mentioned above every 90 degree, if position of rotation 0 degree, 90 degree, 180 degree, 270 degree that the aperture of valve corresponds respectively to output link 14 for closed condition, little, in, big (full-gear), then flow through the adjustment of the flow of valve by the energy of rotation of control motor 10.
In the gearmotor 1 of control as mentioned above, as adopting Fig. 4 explanation, magnetic 18 is fixed in than input part 141 and efferent 142 more towards the extension 143 of the outstanding output link 14 of radial outside.By this, for the position of rotation that detects output link 14 by the magnetic 18 of magnetic detecting element 16 perception with in the past (patent documentation 1) compare, be arranged at the radial outside of output link 14.Therefore, the detection error of output link 14 position of rotation that can cause because of the direction of rotation difference is suppressed to less, thereby can improve the accuracy of detection of the position of rotation that utilizes the output link 14 that magnetic 18 detects.In addition, because magnetic 18 is set at the half-way of extension 143 rather than input part 141 and efferent 142, the input part 141 that even above-mentioned extension 143 is positioned at output link 14 when being subjected to bigger power deflection is also less and the position in efferent 142 outsides, therefore the change in location of the magnetic 18 that can will cause because of the distortion of output link 14 be suppressed to less, thereby improve the accuracy of detection of the position of rotation of output link 14.
And in the present embodiment, magnetic 18 is fixed in the extension 143 of output link 14 with the state with the bottom surface 144b butt of magnetic fixing hole 144.That is to say that magnetic 18 is by relative with magnetic detecting element 16 with the state of locating with the bottom surface 144b of the axis normal of output link 14 on above-mentioned axis direction.Therefore, the deviation at the interval of magnetic detecting element 16 and magnetic 18 can be suppressed, thereby the little gearmotor 1 of accuracy of detection deviation between product can be made.
For the accuracy of detection of the position of rotation that improves above-mentioned output link 14 and the extension of establishing 143 be located on the axis direction of output link 14 and input part 141 and efferent 142 position overlapped.Like this, by extension 143 is set, the axis direction length that output link 14 just can not take place becomes big situation.That is, on one side can keep the size of the gearmotor 1 on the above-mentioned axis direction, Yi Bian improve the position detection accuracy on the direction of rotation of output link 14.
In addition, in order further to improve the accuracy of detection of the position of rotation of output link 14, can expect as described below magnetic 18 being fixed in the structure of output link 14 as variation.That is, shown in Fig. 6 (a), also can on output link 14, be provided with, and magnetic 18 sandwiched be fixed between the above-mentioned tongue piece 145 from the outstanding toward the outer side a pair of tongue piece 145 of the outside wall surface of extension 143.According to said structure, because therefore magnetic 18 can make magnetic 18 be positioned at the position of more leaning on the radial outside of output link 14 to be held from the outstanding state of the outer wall of extension 143.Therefore, the detection error that the direction of rotation difference because of output link 14 is caused further diminishes, thereby the accuracy of detection of the position of rotation of output link 14 is further improved.In addition, in said structure, magnetic 18 is fixed to the part that front end that most external radially is equivalent to a pair of tongue piece 145 is separated from each other.Therefore, because the radially outermost outer wall of magnetic 18 is not formed with the wall portion of heavy wall, thereby above-mentioned radially most external is exposed.Therefore, extension 143 size diametrically can be made that to be embedded in the structure (structure shown in Figure 4) of extension 143 extension 143 size diametrically than magnetic 18 little.
And shown in Fig. 6 (a), magnetic 18 is fixed to its part and enters the depressed part 146 that is formed at extension 143.Particularly, as taking off state representation behind the magnetic 18 in Fig. 6 (b) from output link 14, the outer peripheral face of extension 143 is formed with the protuberance 147 that strides across depressed part 146, and magnetic 18 is fixed between the bottom surface 146a and protuberance 147 that its end face is clipped in depressed part 146.Owing to so can prevent that not only magnetic 18 from coming off accidentally, can also prevent output link 14 offset on axis direction, therefore can suppress the deviation at the interval of magnetic detecting element 16 and magnetic 18.
At this, by Fig. 6 (b) as can be known, the substantial middle place of the face relative with the bottom surface 146a of depressed part 146 of protuberance 147 is formed with the projection 147a of given size.Because magnetic 18 is installed in the crush mode of above-mentioned projection 147a of end face, so projection 147a plays the effect of spring, with the bottom surface 146a that improves depressed part 146 and the grip strength of 147 pairs of magnetics 18 of protuberance.By this, the anticreep performance of magnetic 18 is further improved.
More than embodiments of the present invention are had been described in detail.But the present invention is not limited to above-mentioned execution mode, can carry out various changes in the scope that does not break away from main points of the present invention.
For example, in the above-described embodiment, the situation that output link 14 is fixed with magnetic 18 is illustrated, but also can adopt opposite configuration, be that output link 14 is fixed with magnetic detecting element 16 and is provided with the structure of magnetic 18 on position on the other side.
In addition, in these execution modes, to being provided with magnetic 144 everywhere at the outer peripheral face of output link 14, and a place or two places structure that magnetic 18 optionally is installed is illustrated therein, but also can be that for example (circumferential 0 ° (360 °), 120 °, 240 °) are provided with the magnetic fixing hole at three places of the outer peripheral face of output link, an and place or two places structure that magnetic optionally is installed therein.No matter be which kind of structure, if output link itself is to be provided with magnetic fixing hole or magnetic detecting element installation portion in the many places of its outer peripheral face, an and place or many places structure that magnetic or magnetic detecting element optionally are installed therein, then need not to produce multiple output link according to the occupation mode of valve, owing to can exchange use, therefore also have the advantage that can reduce component count.
Claims (10)
1. gearmotor, it comprises: motor; The output link of the actuating force output of the actuating force of the described motor of acceptance and the described motor that will transmit by the gear train transmission; Be used to detect the magnetic detecting element of the position of rotation of this output link; And the magnetic paired with this magnetic detecting element, it is characterized in that,
In the described output link, be provided with by integrally formed:
Input part, the actuating force that is passed to the described motor of described gear train is imported described input part;
Efferent, the actuating force that is imported into the described motor of described input part outputs to described efferent; And
Extension, this extension is more outstanding towards radial outside than described input part and described efferent,
Be fixed with any one in described magnetic detecting element and the described magnetic near the outer wall radially of described extension.
2. gearmotor as claimed in claim 1 is characterized in that, described input part and described efferent upwards are arranged at overlapped position in the footpath of described output link.
3. gearmotor as claimed in claim 2 is characterized in that the axis of described input part is provided with described efferent.
4. gearmotor as claimed in claim 1 is characterized in that, described extension is located on the axis direction of described output link and described input part or described efferent position overlapped.
5. gearmotor as claimed in claim 4 is characterized in that, described magnetic detecting element or described magnetic are located on the axis direction of described output link and described input part or described efferent position overlapped.
6. gearmotor as claimed in claim 5, it is characterized in that, on the axis direction of described output link, have towards the hole portion of a side opening with towards the hole portion of opposite side opening, be formed with described input part towards the hole portion of a described side opening and be formed with described efferent towards the hole portion of described opposite side opening, be formed with extension towards the hole portion of a described side opening or towards the radial outside of the hole portion of described opposite side opening, described magnetic detecting element or described magnetic are located on the axis direction of described output link and the hole portion of a described side or the hole portion position overlapped of described opposite side.
7. gearmotor as claimed in claim 6 is characterized in that, is connected to each other and runs through the through hole of described output link along axis direction towards the hole portion of a described side opening with towards the hole portion of described opposite side opening.
8. gearmotor as claimed in claim 1, it is characterized in that, when described magnetic detecting element and described magnetic are configured on described axis direction when relative, be formed with recess at described extension, this recess have any one institute in described magnetic detecting element and the described magnetic butt with bearing surface described axis normal.
9. gearmotor as claimed in claim 8 is characterized in that described extension is formed by resin, and the peristome of described recess seals by thermofussion welding.
10. gearmotor as claimed in claim 1 is characterized in that described extension is formed with a pair of tongue piece, and this a pair of tongue piece is from the outstanding toward the outer side also described magnetic detecting element of clamping of outside wall surface of described extension and any one the described magnetic.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-049252 | 2009-03-03 | ||
| JP2009049252 | 2009-03-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101826772A true CN101826772A (en) | 2010-09-08 |
| CN101826772B CN101826772B (en) | 2014-11-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010134600.9A Active CN101826772B (en) | 2009-03-03 | 2010-03-02 | Gear drive electromotor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5632622B2 (en) |
| CN (1) | CN101826772B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887922A (en) * | 2012-12-19 | 2014-06-25 | 日本电产三协株式会社 | Gear motor and valve driving device |
| CN108855956A (en) * | 2018-08-03 | 2018-11-23 | 深圳路辉物流设备有限公司 | Magnetic tooth transmission mechanism, magnetic tooth high-speed diverter and sorting equipment |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7027838B2 (en) * | 2017-11-27 | 2022-03-02 | 株式会社リコー | Drives and robots |
| CN109914925A (en) * | 2019-03-18 | 2019-06-21 | 深圳华升高新技术研发有限公司 | A kind of electronic lock drive assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20040061391A1 (en) * | 2002-09-17 | 2004-04-01 | Youichi Matsuyama | Motor having connector housing |
| JP2006158108A (en) * | 2004-11-30 | 2006-06-15 | Tokyo Parts Ind Co Ltd | Electric motor with reduction gear |
| CN101123379A (en) * | 2006-08-08 | 2008-02-13 | 日本电产三协株式会社 | Geared motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0257268U (en) * | 1988-10-20 | 1990-04-25 | ||
| JP2521135Y2 (en) * | 1989-03-24 | 1996-12-25 | 株式会社三協精機製作所 | Motor type actuator |
| JP4393825B2 (en) * | 2003-09-12 | 2010-01-06 | 株式会社ミツバ | Electric motor with reduction mechanism |
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- 2010-03-01 JP JP2010043708A patent/JP5632622B2/en active Active
- 2010-03-02 CN CN201010134600.9A patent/CN101826772B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040061391A1 (en) * | 2002-09-17 | 2004-04-01 | Youichi Matsuyama | Motor having connector housing |
| JP2006158108A (en) * | 2004-11-30 | 2006-06-15 | Tokyo Parts Ind Co Ltd | Electric motor with reduction gear |
| CN101123379A (en) * | 2006-08-08 | 2008-02-13 | 日本电产三协株式会社 | Geared motor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887922A (en) * | 2012-12-19 | 2014-06-25 | 日本电产三协株式会社 | Gear motor and valve driving device |
| CN103887922B (en) * | 2012-12-19 | 2016-03-16 | 日本电产三协株式会社 | Gear motor and valve drive |
| CN108855956A (en) * | 2018-08-03 | 2018-11-23 | 深圳路辉物流设备有限公司 | Magnetic tooth transmission mechanism, magnetic tooth high-speed diverter and sorting equipment |
| CN108855956B (en) * | 2018-08-03 | 2024-04-09 | 深圳路辉物流设备有限公司 | Magnetic tooth transmission mechanism, magnetic tooth high-speed shunt and sorting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5632622B2 (en) | 2014-11-26 |
| CN101826772B (en) | 2014-11-12 |
| JP2010233446A (en) | 2010-10-14 |
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