CN102915872A - Magnetic switch device - Google Patents
Magnetic switch device Download PDFInfo
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- CN102915872A CN102915872A CN2012102716430A CN201210271643A CN102915872A CN 102915872 A CN102915872 A CN 102915872A CN 2012102716430 A CN2012102716430 A CN 2012102716430A CN 201210271643 A CN201210271643 A CN 201210271643A CN 102915872 A CN102915872 A CN 102915872A
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Abstract
The invention provides a magnetic switch device characterized by long service life and capability of detecting two direction movement of an operation body. The magnetic switch is provided with a magnet (13) arranged on an operation body (11) which is operated in a rotated manner and a magnetic sensor (15) which is used to detect magnetic field orientation change of the magnet, wherein the magnet is arranged opposite to an operation part (11t) across the rotation shaft line (Kj) of the operation body, the magnet is magnetized to form different magnetic poles along the protruding direction of the operation part, and the magnetic sensor is arranged opposite to the rotation shaft line (Kj) through the magnet. In a neutral position where the operation body is rotated, the magnetic field which is generated in the place where the magnetic sensor is arranged faces towards the radial direction of the rotating operation body. When the operation body is operated in a rotated manner in the neutral position, two magnetic fields generated in the magnetic sensor arrangement place when the operation body is rotated to one direction and when the operation body is rotated to the other direction are opposite in orientation direction, respectively facing to the radial direction and opposite to the radial direction.
Description
Technical field
The present invention relates to a kind of on various electronic equipments the sense switch device for detection of various mechanical actions etc., relate in particular to a kind of magnetic switch device that uses magnetic sensor.
Background technology
As on various electronic equipments for detection of the sense switch of various mechanical actions etc., a kind of lever switch that has made up elastic metallic thin plate travelling contact processed and fixed contact of well-known.
At patent documentation 1, the contact lever switch 901 of combined elastic made of sheet metal travelling contact 915, fixed contact 913 and fixed contact 914 has been proposed as shown in figure 17.Lever switch 901 shown in Figure 17 by shell 911, be located at shell 911 inner bottom surface 911d central authorities common junction 912, with shell 911 opposed two madial walls on roughly M word shape elastic metallic travelling contact 915 processed, the lever 916 of the fixed contact 913 implanted respectively and fixed contact 914, these common junction 912 Elastic Contact of Chang Shiyu and the slide mass 917 that leans on the rotation of lever 916 to slide consist of.The slide mass 917 that slides by the rotation of lever 916 not only slides at the inner surface 911u of shell 911, and direction is pressed travelling contact 915 to the left and right.That is, when the right presses lever 916 to Figure 17 was rotated lever 916, the cantilever portion 915d of travelling contact 915 was out of shape because of the slide mass 917 that is moved to the left, and the 915a of contact section of travelling contact 915 moves down and contacts with fixed contact 913.And the 915c of contact section and the travelling contact 915 of the travelling contact 915 of Elastic Contact make common junction 912 and fixed contact 913 conductings when normal.Equally, when the left to Figure 17 rotates lever 916 to presses lever 916, the cantilever portion 915e of travelling contact 915 is out of shape because of the slide mass 917 that moves right, and the 915b of contact section of travelling contact 915 contacts with fixed contact 914, makes common junction 912 and fixed contact 914 conductings.Thus, can detect the both direction action.
Patent documentation 1:(Japan) JP 2003-132765 communique
Yet, adopted the rotating operation along with lever 916 to make travelling contact 915 strains and the contact type structure by making the 915a of contact section and fixed contact 913, the 915b of contact section and fixed contact 914 contact or separately carry out switch motion in past case, therefore the unsettled problem of conducting has appearred in each contact section and each fixed contact and the mutual fretting wear of common junction.And, travelling contact 915 has also appearred because of the problem of strain fatigue rupture repeatedly.Therefore, at above-mentioned contact lever switch, tens thousand of times action is its limit, thereby has brought the problem that is difficult to realize the long life.
Summary of the invention
The present invention proposes in order to solve above-mentioned problem, and its purpose is, the magnetic switch device that can realize the long life and can detect the action of operating body both direction is provided.
In order to solve above-mentioned problem, magnetic switch device of the present invention is characterised in that to possess: operating body has the operating portion of the operation of being rotated; Housing has and makes the outstanding peristome of aforesaid operations section and keep rotationally the aforesaid operations body; Magnet is arranged on the aforesaid operations body; And magnetic sensor, detect the magnetic field of the above-mentioned magnet that the rotating operation of aforesaid operations body brings towards the magnetic sensor that changes, and
Above-mentioned magnet is arranged on across the pivot center of the aforesaid operations body side opposite with aforesaid operations section, and is geomagnetic into the projected direction formation different magnetic poles along aforesaid operations section,
Above-mentioned magnetic sensor is provided in by on above-mentioned magnet and the opposed position of above-mentioned pivot center,
Neutral position in the rotation action of aforesaid operations body, the magnetic field of above-mentioned magnetic sensor on equipping position is towards along the aforesaid operations body that rotates radially, when the aforesaid operations body is rotated when operation from above-mentioned neutral position, the direction of magnetic field on above-mentioned magnetic sensor equipping position during to side's side rotating operation the time with to the opposing party's side rotating operation forms across above-mentioned footpath in the opposite direction.
According to said structure, in magnetic switch device of the present invention, because operating body is rotated when having operated from the neutral position of rotation action, the direction of magnetic field on the equipping position of magnetic sensor when being rotated operation when being rotated operation to a side and to opposite side forms mutually opposite direction, therefore can detect by detecting magnetic field the rotating operation of different both directions towards the magnetic sensor that changes.And, owing to be the non-contact detection mechanism that utilizes magnet and magnetic sensor, so compare with contact measurement mechanism in the past, can not occur contacting between the parts that bring and wear and tear, thus the long life that can realize detecting the switching device of both direction action.
And in magnetic switch device of the present invention, above-mentioned magnet has along the circular shape of aforesaid operations body rotation direction, and is geomagnetic in interior all sides and outer circumferential side formation different magnetic poles.
According to said structure, because magnet has along the circular shape of operating body rotation direction, so even operating body is rotated operation magnet is rotated, also can reduce the change of distance between magnet and the magnetic sensor.Therefore, can make magnet and magnetic sensor more approaching, thereby can improve the motion detection precision of both direction.
And magnetic switch device of the present invention is characterised in that, have by magnetic field towards a plurality of magnetic detection elements that carry out switch motion, in above-mentioned a plurality of magnetic detection elements at least 2 with different mutually magnetic field towards carrying out switch motion.
According to said structure, use 2 above magnetic detection elements, therefore make the magnetic field of carrying out switch motion towards mutual difference, can detect 2 different magnetic fields, can detect respectively the changes of magnetic field when operating body rolled to one and the changes of magnetic field when toppling over to opposite side.Thus, the magnetic field that can detect reliably both direction towards, and can provide the switching device that can carry out the both direction switch motion.
And magnetic switch device of the present invention is characterised in that, is provided with the insensitive zone that above-mentioned magnetic sensor does not carry out switch motion near the above-mentioned neutral position of aforesaid operations body.
According to said structure, owing near the neutral position of operating body, be provided with the insensitive zone that magnetic sensor does not carry out switch motion, so even operating body is mobile a little near the neutral position, can prevent from also that it from moving by magnetic sensor to detect.Thus, can more improve the reliability of two-way detection, the switching device that carries out reliably the bidirectional switch action can be provided.
Magnetic switch device of the present invention is characterised in that, in the above-mentioned outer circumferential side central portion formation evener of above-mentioned magnet or the concavity section of caving in than burnishing surface.
According to said structure, the concavity section by the outer circumferential side central portion at magnet forms evener or caves in than burnishing surface can enlarge the insensitive zone that magnetic sensor does not carry out switch motion.Therefore, used to have with different magnetic field when 1 magnetic sensor of a plurality of magnetic detection elements that carry out switch motion, can enlarge the slewing area of the operating body that carries out switch motion.Thus, can provide the switching device that just can carry out the bidirectional switch action of operating body slewing area broadness with 1 magnetic sensor.
Magnetic switch device of the present invention is characterised in that, has been provided with when not carrying out rotating operation to make the aforesaid operations body reset to the reset components of above-mentioned neutral position.
According to said structure, because when not carrying out the non-operating state of rotating operation, it is the neutral position that reset components makes operating body automatically reset to initial position, so when not carrying out the rotating operation of operating body, can turn back to the neutral position.Thus, when operating body is in non-operating state, can not export the signal of not expecting.
Magnetic switch device of the present invention is characterised in that, above-mentioned reset components is made of the distortion disc spring with winder and a pair of arm, above-mentioned distortion disc spring makes above-mentioned winder insert logical at the rotation axial region of aforesaid operations body, and above-mentioned a pair of arm locked on aforesaid operations body and above-mentioned housing, and is provided with when the aforesaid operations body resets to above-mentioned neutral position damping aforesaid operations body carries out homing action by above-mentioned distortion disc spring brake mechanism.
According to said structure, because the winder of distortion disc spring is inserted the rotation axial region between logical and the operating body, and a pair of arm locked on operating body and housing, so can make reliably operating body reset to the neutral position by enough distortion disc springs simple in structure.Thus, obtained to detect and enough simple structures to have made operating body reset to the switching device of the bidirectional-movement of neutral position.And, carry out the brake mechanism of homing action owing to be provided with damping aforesaid operations body by above-mentioned distortion disc spring, so when operating body resets to the action of neutral position, can prevent that operating body from crossing the neutral position greatly.Thereby, can prevent reliably that the reaction when resetting to the neutral position from bringing error detection, and can improve the accuracy of detection of both direction action.
Magnetic switch device of the present invention is characterised in that, above-mentioned housing is locked near the part of the locking on the above-mentioned housing at above-mentioned a pair of arm has rake, when the aforesaid operations body resets to the action of above-mentioned neutral position, by above-mentioned arm is slided at above-mentioned rake, make above-mentioned rake become above-mentioned brake mechanism.
According to said structure, because by arm is slided at the rake of being located on the housing, make rake become the brake mechanism of damping operating body homing action, so when operating body resets to the action of neutral position, the imposing manner that resets of operating body weakens gradually, can prevent that operating body from crossing the neutral position greatly.Thus, the reaction in the time of can preventing from resetting to the neutral position reliably brings error detection, can more improve the accuracy of detection of both direction action.
At magnetic switch device of the present invention, when operating body is rotated operation from the neutral position of rotation action, magnetic field when being rotated when operation to side's side and being rotated from operation to the opposing party's side the magnetic sensor equipping position towards forming rightabout, so can detect by detecting magnetic field the rotating operation of the different both directions of operating body towards the magnetic sensor that changes.Thereby, owing to be the non-contact detection mechanism that is consisted of by magnet and magnetic sensor, so compare with contact measurement mechanism in the past, do not come in contact between the parts that cause and wear and tear, thus the long life that can realize detecting the switching device of both direction action.
Therefore, can provide the magnetic switch device that to realize the long life and can detect the action of operating body both direction according to the present invention.
Description of drawings
Fig. 1 is that the stereogram of the magnetic switch device of the present invention's the 1st execution mode is described.
Fig. 2 is that the exploded perspective view of the magnetic switch device of the present invention's the 1st execution mode is described.
Fig. 3 is, the figure of the magnetic switch device of the present invention's the 1st execution mode is described, is the front view of the magnetic switch device seen from Y1 side shown in Figure 1.
Fig. 4 is, the figure of the magnetic switch device that the 1st execution mode of the present invention is involved is described, is the end view of the magnetic switch device seen from X2 side shown in Figure 1.
Fig. 5 is, represented on the involved magnetic switch device of the 1st execution mode of the present invention magnetic field towards key diagram.
Fig. 6 is that the front view of the rotation action of the magnetic switch device that the 1st execution mode of the present invention is involved is described.Fig. 6 (a) expression operating body is in the state of the neutral position of operating body rotation action; Fig. 6 (b) expression operating body is rotated to the left action and is in the state in final position; Fig. 6 (c) expression operating body is rotated to the right action and is in the state in final position.
Fig. 7 is, represents the chart that magnetic density that the operating body rotation action of the magnetic switch device that the 1st execution mode of the present invention is involved causes changes.
Fig. 8 is that the figure of the switch motion of the magnetic sensor that uses at the involved magnetic switch device of the 1st execution mode of the present invention has been described.Fig. 8 (a) is illustrated in the output voltage that carries out switch motion when a side magnetic detection element and magnetic field are positive flux field to be changed; Fig. 8 (b) is expressed as the output voltage that carries out switch motion when opposite side magnetic detection element and magnetic field are negative fluxfield to be changed.
Fig. 9 is, the figure of the magnetic switch device that the 1st execution mode of the present invention is involved is described, is the upper surface stereogram of the housing seen from Z1 side shown in Figure 1.
Figure 10 is, the figure of the magnetic switch device that the 1st execution mode of the present invention is involved is described, is the housing seen from Y1 side shown in Figure 1 and the front view of reset components.Figure 10 (a) expression operating body is rotated the state of action to the right; Figure 10 (b) expression operating body is in the state of operating body rotation action neutral position.
Figure 11 is, the structure chart of the magnetic switch device that the 2nd execution mode of the present invention is involved is described, is its front view.
Figure 12 is, is illustrated in the chart that magnetic density that the rotation action of the operating body when having used magnet shown in Figure 11 brings changes.
Figure 13 is that the figure of the magnetic switch device variation 1 that the 1st execution mode of the present invention is involved is described.Figure 13 (a) for a change an example of magnet shape; Figure 13 (b) for a change another example of magnet shape.
Figure 14 is, the figure of the magnetic switch device variation 2 that the 1st execution mode of the present invention is involved is described, is the structure chart of the magnetic direction of expression variation 2.
Figure 15 is, the figure of the variation 4 of the magnetic switch device that the 2nd execution mode of the present invention is involved is described, is the chart that has represented that magnetic density changes.
Figure 16 is that the front view of the variation 5 of the magnetic switch device that the 2nd execution mode of the present invention is involved is described.
Figure 17 is, the figure of the contact lever switch that past case is involved is described, is its cutaway view.
Mark among the figure
11 operating bodies, the 11t operating portion, 11j rotates axial region, 12 housings, the 12k peristome, 12p, 12q, 12s, 12t rake, 13,23,33,43 magnet, 13r, 43k concavity section, 15,25,45a, 45b magnetic sensor, 18 reset components, 19 distortion disc springs, the 19c winder, 19a, 19b arm, 101,201,301 magnetic switchs, the Kd rotation action, Kj pivot center, Dk rotation direction, the Dt projected direction, NC, NC1, the insensitive zone of NC2, MD magnetic field towards
Embodiment
The specific embodiment of the present invention is described below with reference to accompanying drawings.
[the 1st execution mode]
Fig. 1 is the stereogram of the involved magnetic switch device 101 of explanation the present invention the 1st execution mode.Fig. 2 is the exploded perspective view of the involved magnetic switch device 101 of explanation the present invention the 1st execution mode.Fig. 3 is the structure chart of the involved magnetic switch device 101 of explanation the present invention the 1st execution mode, Fig. 3 (a) is the front view of the magnetic switch device 101 seen from Y1 side shown in Figure 1, and Fig. 3 (b) is for having omitted for convenience of explanation the front view of the shell 12B of Fig. 3 (a) housing 12.Fig. 4 is the structure chart of the involved magnetic switch device 101 of explanation the 1st execution mode of the present invention, Fig. 4 (a) is the end view of the magnetic switch device 101 seen from X2 side shown in Figure 1, and Fig. 4 (b) is for having omitted for convenience of explanation the figure of Fig. 4 (a) housing 12.State when in addition, Fig. 1 is in rotation action Kd neutral position to operating body shown in Figure 4 11 expression operating bodies 11.
Such as Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, the involved magnetic switch device of the 1st execution mode of the present invention 101 is main by the operating body 11 that is rotated operation, keep the housing 12 of operating body 11, the magnetic field that is arranged on the magnet 13 on the operating body 11 and detects magnet 13 to consist of towards the magnetic sensor 15 that MD changes rotationally.
Operating body 11 is for example by the synthetic resin material forming, and such as Fig. 2 and the operating portion 11t with the operation of being rotated shown in Figure 4, also has the rotation axial region 11j that embeds with a gap and keep axial region 11h on the hole 12a, the hole 12b that are formed on the aftermentioned housing 12.And, be formed for locking lug boss 11a and the lug boss 11b of aftermentioned reset components 18 at the left and right sides that rotates axial region 11j.
For example use the synthetic resin material, such as Fig. 1, Fig. 2 and make up as shown in Figure 3 shell 12A and shell 12B forms housing 12.And, having the peristome 12k that makes operating portion 11t outstanding at housing 12, but also form hole 12a and hole 12b, this hole 12a is arranged on for the shell 12A that keeps rotationally operating body, and this hole 12b is arranged on the shell 12B.Then, housing 12 makes the rotation axial region 11j of operating body 11 embed with a gap the hole 12a of shell 12A, makes the maintenance axial region 11h of operating body 11 embed with a gap the hole 12b of shell 12B, thus the part of deposit operation body 11.
For example, use ferroalloy such as Fig. 2, Fig. 3 and shown in Figure 4, be provided with magnet 13 across the pivot center Kj of operating body 11 at the opposition side of operating portion 11t, and make magnet 13 chimeric with the concavity section of operating body 11, be integral rotation with operating body 11.And when seeing from the front, magnet 13 has along the circular shape of operating body 11 rotation direction Dk, and forms the curved surface shape concavity 13r of section towards interior all side directions at the outer circumferential side central portion of magnet 13.
For example use the magnetic detection element (being called GMR (Giant Magneto Resistive) element) of giant magnetoresistance effect, such as Fig. 2, Fig. 3 and shown in Figure 4, set magnetic sensor 15 in the neutral position of the rotation action Kd of operating body 11 across magnet 13 and the opposed position of pivot center Kj.That is, magnetic sensor 15 is in the neutral position of the rotation action Kd of operating body 11, and is opposite with the 13r of concavity section of magnet 13.And magnetic sensor 15 is made the GMR element at silicon substrate, has done encapsulation with thermosetting synthetic resin.
And, the GMR element for example, antiferromagnetic layer is by α-Fe
2O
3Layer, pin-and-hole layer are formed by the NiFe layer by Cu layer, free layer by NiFe layer, intermediate layer.But be not to be defined in this, as long as can bring into play the giant magnetoresistance effect, with which kind of material all can.And, with respect to being magnetized in antiferromagnetic layer and the direction of magnetization (pin is fixed) the pin-and-hole layer direction of magnetization at specific direction that be fixed, the direction of magnetization of free layer changes towards variation according to the external magnetic field, thereby the resistance value of GMR element is changed.So, by the variation of this resistance value is exported as output signal, the GMR element is used as transducer.
Fig. 5 is the key diagram of the direction in the magnetic field on the involved magnetic switch device 101 of expression the present invention the 1st execution mode.In addition, Fig. 5 for convenience of explanation, has omitted housing 12 and aftermentioned reset components 18 for the front view of the magnetic switch device 101 seen from Y2 side shown in Figure 1.Fig. 6 is the front view of the rotation action Kd of the involved magnetic switch device 101 of explanation the present invention the 1st execution mode, state when Fig. 6 (a) expression operating body 11 is in the neutral position of rotation action Kd of operating body 11, Fig. 6 (b) expression operating body 11 is rotated action Kd and state when being in the final position to the left, and Fig. 6 (c) expression operating body 11 is rotated action Kd and state when being in the final position to the right.In addition, for convenience of explanation, in Fig. 6, omitted the shell 12A of housing 12.Fig. 7 is the chart that the magnetic density brought of the rotation action Kd of the operating body 11 of the involved magnetic switch device 101 of expression the 1st execution mode of the present invention changes, and is to have simulated the result of magnetic sensor 15 in the horizontal component magnetic density of equipping position.
Such as Fig. 3 and shown in Figure 5, magnet 13 is geomagnetic in interior all sides and outer circumferential side becomes different magnetic poles, and the magnetic field of magnet 13 is towards the projected direction Dt of MD along operating portion 11t.Simultaneously, such as Fig. 3 and shown in Figure 5, in the neutral position of the rotation action Kd of operating body 11, radially namely form from pivot center Kj direction towards magnetic sensor 15 towards MD along rotating operation body 11 in the magnetic field of magnetic sensor 15 equipping positions (central portion of magnetic sensor 15).
And, neutral position at the rotation action Kd of the operating body 11 shown in Fig. 5 and Fig. 6 (a), magnetic density is almost nil in the horizontal component of magnetic sensor 15 present positions, for example, when operating body 11 to the left shown in Fig. 6 (b) to being rotated when operation, as shown in Figure 7, the horizontal component A of magnetic density is along with the rotational angle change large (negative direction) of operating body 11 increases gradually.On the contrary, when operating body 11 is rotated operation to the right shown in Fig. 6 (c), as shown in Figure 7, as with the reciprocal composition of horizontal component A, the horizontal component B of magnetic density also increases gradually along with the rotational angle of operating body 11 becomes large (positive direction).Magnetic field forming across the footpath in the opposite direction towards MD on the equipping position of magnetic sensor 15 when being rotated operation when as mentioned above, being rotated operation to side's side and to the opposing party's side.
As mentioned above, at magnetic switch device 101 of the present invention, when operating body 11 is rotated operation from the neutral position of rotation action Kd, magnetic field when being rotated when operation and being rotated operation to from the opposing party's side to side's side becomes opposite direction towards MD on magnetic sensor 15 equipping positions, so the magnetic sensor 15 that can enough detections magnetic field changes towards MD detects the rotating operation of different both directions.Thereby, owing to be the non-contact detection mechanism that is consisted of by magnet 13 and magnetic sensor 15, so compare with contact measurement mechanism in the past, wear and tear not coming in contact between the parts that bring, can realize detecting the long lifetime of the switching device of both direction action.
And, shown in Fig. 3 (b), owing to magnet 13 has along the circular shape of the rotation direction Dk of operating body 11, so even operating body 11 is rotated to be operated when magnet 13 is rotated, also can reduce the change of distance between magnet 13 and the magnetic sensor 15.Therefore, when with minimum range distributed magnet 13 and magnetic sensor 15, can make the magnet 13 and the magnetic sensor 15 that are in ultimate range more close.Thus, can improve the accuracy of detection of bidirectional-movement.
Secondly, the switch motion of the magnetic switch device 101 that explanation the 1st execution mode of the present invention is involved.Fig. 8 is the key diagram of explanation in magnetic sensor 15 switch motions of involved magnetic switch device 101 uses of the 1st execution mode of the present invention, Fig. 8 (a) expression one side magnetic detection element and magnetic field are that the output voltage of timing when carrying out switch motion changes, and the output voltage when switch motion is carried out when negative in Fig. 8 (b) expression opposite side magnetic detection element and magnetic field changes.And Figure 11 is the front view of the involved magnetic switch device 201 of explanation aftermentioned the present invention the 2nd execution mode.Figure 15 is the figure of involved magnetic switch device 201 variation 4 of explanation aftermentioned the present invention the 2nd execution mode, is the chart of having simulated the result that magnetic density that the rotation action Kd of operating body 11 when using magnet 23 shown in Figure 11 brings changes.
As shown in Figure 7, in the shape such as Fig. 3 and magnet shown in Figure 5 13, the absolute value of magnetic density horizontal component about the rotation action Kd of operating body 11 belongs to approximately 60deg near the time become maximum, and according to the shape of use magnet 13 and allocation position etc., its result is difference also.For example, as shown in figure 11, magnet 23 does not have concavity section and when forming circular shape, as shown in figure 15, the absolute value of magnetic density horizontal component about 50deg about the rotation action Kd of operating body 11 belongs to becomes maximum near being, the variation of its magnetic density horizontal component causes variation with respect to the rotational angle of operating body 11 with linearity.
Then, for example situation when magnetic sensor 15 has used bipolar lose-lose removing from mould magnetic sensor (Alps Electric Co., Ltd, production code member HGDEDM033A) will be described in magnetic field shown in Figure 7.
Bipolar lose-lose removing from mould magnetic sensor 15 has the magnetic field of carrying out switch motion towards MD 2 magnetic detection elements (GMR element) of mutually different (on the contrary).This GMR element have detect magnetic field towards MD and when magnetic field reaches some strength resistance characteristic jumpy.This resistance characteristic jumpy is used to switch motion.
One side GMR element of magnetic sensor 15 is that timing is carried out switch motion by output voltage is changed in magnetic field shown in Fig. 8 (a); The opposite side GMR element of magnetic sensor 15 carries out switch motion by output voltage is changed when being negative in magnetic field shown in Fig. 8 (b).That is, from the neutral position of the rotation action Kd of operating body 11, shown in Fig. 6 (b), at direction rotating operation left during operating body 11, shown in Fig. 8 (a), in the variation of the positive side generation output voltage in magnetic field, carry out the switch motion of ON or OFF.Be in particular, at above-mentioned bipolar lose-lose removing from mould magnetic sensor, output voltage descends when magnetic field reaches 0.003 (mT), and magnetic field when returning to 0.0022 (mT) output voltage rise, carry out the switch motion of ON or OFF.In addition, during from the neutral position of operating body 11 to the right rotating operation operating body 11 shown in Fig. 6 (c), shown in Fig. 8 (b), the minus side output voltage in magnetic field changes, and carries out the switch motion of ON or OFF.Be in particular, output voltage descends when magnetic field is-0.003 (mT), and the switch motion of ON or OFF is carried out in magnetic field output voltage rising when be-0.0022 (mT).In addition, " just " in magnetic field or " bearing " are used in order to represent convenient, be defined as in the present embodiment, on the equipping position of magnetic sensor 15, the left of the horizontal component of magnetic density such as Fig. 5 and Fig. 6 to the time for just, be to bear during right.
According to said structure, because 2 magnetic detection elements of use (GMR element) make the magnetic field of carrying out switch motion different mutually towards MD, so can detect 2 different magnetic fields, the changes of magnetic field in the time of can detecting respectively operating body 11 and roll to a side and the changes of magnetic field when rolling to the opposing party.Thus, can really detect reliably the magnetic direction of both direction, and the switching device that carries out the both direction switch motion can be provided.
And, carrying out the bipolar lose-lose removing from mould magnetic sensor of as shown in Figure 8 switch motion, analog result as shown in Figure 7, near the neutral position of operating body 11, exist magnetic sensor 15 not carry out the insensitive regional NC1 of switch motion, rotational angle at the operating body 11 that rotation action Kd brings is approximately ± 20deg near, carry out the switch motion of ON or OFF.Equally, when using aftermentioned not have the magnet 23 of concavity section as shown in figure 11, analog result as shown in figure 15, near the neutral position of operating body 11, exist magnetic sensor 15 not carry out the insensitive regional NC2 of switch motion, angle of rotation at the operating body 11 that rotation action Kd causes is approximately ± 7deg near, carry out ON or OFF switch motion.
Insensitive regional NC1 is wider than above-mentioned insensitive regional NC2, is to form the 13r of concavity section that caves in than burnishing surface because of the outer circumferential side central portion at magnet 13.Thereby, owing to enlarged the insensitive regional NC that magnetic sensor 15 does not carry out switch motion, therefore have with different magnetic field when MD carries out 1 magnetic sensor 15 of a plurality of magnetic detection elements of switch motion when use, can enlarge the slewing area of the operating body 11 that carries out switch motion.Thereby, the switching device of both direction switch motion that carries out the slewing area broadness of operating body 11 with 1 magnetic sensor 15 can be provided.
And, owing to enlarged the insensitive regional NC that does not carry out switch motion, so even be in the equipping position of the magnetic sensor 15 shown in Fig. 3 (b), also can strengthen the rotational angle of the operating body 11 that carries out switch motion.Therefore, 2 GMR elements that can disposed adjacent magnetic sensor 15 can leave in 1 encapsulation.Thereby, compare with using 2 magnetic sensors with 1 magnetic detection element, can make the easy and cheap magnetic switch device 101 of assembling.
Then, explanation is consisted of the reset components 18 of the involved magnetic switch device 101 of the present invention's the 1st execution mode.Fig. 9 is the figure of the involved magnetic switch device 101 of explanation the present invention the 1st execution mode, is the stereogram of the shell 12A upper surface seen from Z1 side shown in Figure 1.Figure 10 is the figure of the involved magnetic switch device 101 of explanation the present invention the 1st execution mode, the shell 12A that sees from Y1 side shown in Figure 1 and the front view of reset components 18, Figure 10 (a) expression operating body 11 is to the state that is rotated action with right side shown in the figure, and Figure 10 (b) expression operating body 11 is in the state of the rotation action neutral position of operating body 11.In addition, to the rotation action on Figure 10 (a) right side, with the opposite direction of seeing on Fig. 6, so with identical to the rotation action Kd in Fig. 6 (b) left side.
The involved magnetic switch device 101 of the 1st execution mode of the present invention is provided with and makes operating body 11 reset to reset components 18 on the neutral position when not carrying out rotating operation.Such as Fig. 2, Fig. 4 (b), Fig. 6 and shown in Figure 10, this reset components 18 uses distortion disc spring 19, and this distortion disc spring 19 has winder 19c and a pair of arm 19a and 19b.And the winder 19c of distortion disc spring 19 inserts logical at the rotation axial region 11j of operating body 11, and lug boss 11a, lug boss 11b that a pair of arm 19a and 19b are operated body 11 lock.
And during fitting operation body 11, as shown in Figure 9, distortion disc spring 19 can be stored in the recess 12r of shell 12A on housing 12.Distortion disc spring 19 such as Fig. 2 and shown in Figure 9, makes near the arm 19a butt rake 12S of shell 12A, and makes near the arm 19b butt rake 12q of shell 12B after being stored in the recess 12r.Also have, when the winder 19c of distortion disc spring 19 back-roll, make near the arm 19a butt rake 12p of shell 12A, make near the arm 19b butt rake 12t of shell 12B.That is, when being provided with accordingly not operation at operating body 11 with lug boss 11a on the shell 12A, with the arm 19a butt of distortion disc spring 19 and the fastener 12e that locks, and be provided with accordingly and arm 19b butt and the fastener 12f that locks with lug boss 11b.This fastener 12e and fastener 12f are positioned at the end of rake 12s and rake 12p, and are made of the opposed arm that intersects with these rakes 12s and rake 12p.
According to said structure, because when not carrying out the not operation of rotating operation, it is the neutral position that reset components 18 makes operating body 11 automatically reset to initial position, so when not carrying out the rotating operation of operating body 11, can turn back to the neutral position.Thus, when operating body 11 is in non-operating state, can not export the signal of not expecting.And, owing to used distortion disc spring 19 as reset components 18, make a pair of arm 19a and 19b be locked structure on operating body 11 and housing 12 so formed rotation axial region 11j that the winder 19c of distortion disc spring 19 inserts logical operating body 11, thereby can enough distortion disc springs 19 simple in structure make reliably operating body 11 reset to the neutral position.
And the involved magnetic switch device 101 of the present invention's the 1st execution mode is provided with when the action that operating body 11 carries out resetting to neutral position damping operating body 11 carries out homing action by distortion disc spring 19 brake mechanism.The method of this damping by from the operating body 11 of Figure 10 (a) to the right the state of rotation action arm 19a is slided at the rake 12s of housing 12A realize that the rake 12s of this housing 12A is positioned at arm 19a and is locked near the fastener 12e on the shell 12A.On the contrary, when operating body 11 forms when returning the state of neutral position from the state of rotation action to the left, by being slided at the rake 12q of shell 12B, arm 19b realizes (not expression among the figure) damping.
According to said structure, carry out the brake mechanism of homing action owing to be provided with damping operating body 11 by distortion disc spring 19, so can prevent that when operating body 11 reset to the action of neutral position, operating body 11 was crossed the neutral position greatly.Thus, prevent that reliably the reaction when getting back to the neutral position from bringing error detection, thereby can improve the accuracy of detection of both direction action.And, by arm 19a or arm 19b are slided at the rake 12s or the rake 12q that are located on the housing 12, make rake 12s and rake 12q become the brake mechanism that damping operating body 11 carries out homing action, so when operating body 11 resets to the action of neutral position, the imposing manner of returning of operating body 11 weakens gradually, thereby can prevent that operating body 11 from crossing the neutral position greatly.Therefore, the error detection that the reaction in the time of can having prevented from more reliably returning the neutral position brings, thus more improve the accuracy of detection of both direction action.
As mentioned above, magnetic switch device of the present invention 101 is owing to be rotated from the neutral position of rotation action Kd when having operated at operating body 11, magnetic field when being rotated when operation and being rotated operation to from the opposing party's side to side's side becomes opposite direction towards MD on magnetic sensor 15 equipping positions, so the magnetic sensor 15 that can enough detections magnetic field changes towards MD detects the rotating operation of different both directions.And, owing to be the non-contact detection mechanism that is consisted of by magnet 13 and magnetic sensor 15, so compare with contact measurement mechanism in the past, do not come in contact between the parts that cause and wear and tear, thereby can realize to detect the long lifetime of the switching device of bidirectional-movement.
And, because 2 magnetic detection elements of use (GMR element) make the magnetic field of carrying out switch motion different mutually towards MD, so can detect 2 different magnetic fields, thereby the changes of magnetic field in the time of can detecting respectively operating body 11 and roll to a side and the changes of magnetic field when rolling to the opposing party.Thus, can detect reliably the magnetic direction of both direction, and the switching device that carries out the both direction switch motion can be provided.
And, owing to magnet 13 has along the circular shape of operating body 11 rotation direction Dk, so even operating body 11 is rotated to be operated when magnet 13 is rotated, also can reduce the change of distance between magnet 13 and the magnetic sensor 15.Therefore, if with minimum range distributed magnet 13 and magnetic sensor 15, just can make the magnet 13 of ultimate range and magnetic sensor 15 more close.Thus, can improve the accuracy of detection of both direction action.
Also have, form the 13r of concavity section that caves in than burnishing surface by the central portion at magnet 13 outer circumferential sides, can enlarge the insensitive regional NC that magnetic sensor 15 does not carry out switch motion.Therefore, have with different magnetic field when MD carries out 1 magnetic sensor 15 of a plurality of magnetic detection elements of switch motion when having used, can enlarge operating body 11 slewing areas of carrying out switch motion.Thus, can provide the switching device that carries out the both direction switch motion of operating body 11 slewing area broadnesses with 1 magnetic sensor 15.
And, when not carrying out the not operation of rotating operation, be the neutral position because reset components 18 makes operating body 11 automatically reset to initial position, so when not carrying out the rotating operation of operating body 11, can turn back to the neutral position.Thus, when operating body 11 is in non-operating state, can not export the signal of not expecting.And, by having used distortion disc spring 19 as reset components 18, make the winder 19c of distortion disc spring 19 insert the rotation axial region 11j that leads to operating body 11, and a pair of arm 19a and 19b are locked on operating body 11 and housing 12, so can make reliably operating body 11 reset to the neutral position by enough distortion disc springs 19 simple in structure.
At last, carry out the brake mechanism of homing action owing to be provided with damping operating body 11 by distortion disc spring 19, so when operating body 11 resets to the action of neutral position, can prevent that operating body 11 from crossing the neutral position greatly.Thereby the reaction in the time of can preventing from turning back to the neutral position reliably causes error detection, can improve the accuracy of detection of both direction action.And, by arm 19a or arm 19b are slided at the rake 12s or the rake 12q that are located on the housing 12, make rake 12s and rake 12q become the brake mechanism of damping operating body 11 homing actions, so when operating body 11 resets to the action of neutral position, the imposing manner of returning of operating body 11 weakens gradually, thereby can prevent that operating body 11 from crossing the neutral position greatly.Thus, the error detection that the reaction in the time of can preventing from turning back to the neutral position more reliably causes can improve the accuracy of detection of both direction action more.
[the 2nd execution mode]
Figure 11 is its front views for the structure chart of the involved magnetic switch device 201 of explanation the present invention the 2nd execution mode.For convenience of explanation, omitted shell 12A among the figure.Figure 12 is the chart that the expression magnetic density that operating body 11 rotation action Kd bring when having used magnet 23 shown in Figure 11 changes, and is the result who has simulated the horizontal component magnetic density on magnetic sensor 25 equipping positions.In addition, enclosed same tag on the parts identical with the 1st execution mode, explanation is omitted.
As shown in figure 11, the involved magnetic switch device of the involved magnetic switch device 201 of the 2nd execution mode of the present invention and first embodiment of the invention is compared, its difference is, magnet 23 does not have concavity section and forms circular shape, and magnetic sensor 25 has the magnetic detection element (GMR element) that 1 detection magnetic field changes towards MD.
Because magnet 23 does not possess concavity section and forms circular shape, so as shown in figure 12, its magnetic density roughly changes on linearity ground with respect to the rotational angle of operating body 11.Namely, operating body 11 is substantially 0 in the magnetic density horizontal component of rotation action Kd neutral position, when operating body 11 left direction be rotated when operation, the horizontal component C of magnetic density is along with the rotational angle change large (negative direction) of operating body 11 also becomes large gradually, and the rotation action Kd of operating body 11 be approximately-50deg near, the horizontal component C of magnetic density becomes maximum.On the contrary, when operating body 11 is rotated operation to right, horizontal component D conduct and the rightabout component of horizontal component C of magnetic density, along with becoming large (positive direction), the rotational angle of operating body 11 also becomes gradually large, and the rotation action Kd of operating body 11 be about 50deg near, the horizontal component D of magnetic density becomes maximum.
And, magnetic sensor 25 has 1 and detects the magnetic detection element (GMR element) that magnetic field changes towards MD, when operating body 11 is rotated operation from the neutral position of rotation action Kd, can detect magnetic field when when being rotated operation to side's side and to the opposing party's side, being rotated operation on magnetic sensor 25 equipping positions towards the opposite direction of MD.For this reason, can detect by detecting magnetic field the rotating operation of different both directions towards the magnetic sensor 25 of MD variation.Thereby, owing to be the non-contact detection mechanism that is consisted of by magnet 23 and magnetic sensor 25, so compare with contact measurement mechanism in the past, do not come in contact between the parts that cause and wear and tear, thereby can realize detecting the long lifetime of the switching device of both direction action.
And as shown in figure 11, the circular shape that magnet 23 forms along operating body 11 rotation direction Dk so even operating body 11 is rotated operation magnet 23 is rotated, also can reduce the change of distance between magnet 23 and the magnetic sensor 25.Therefore, when with minimum range distributed magnet 23 and magnetic sensor 25, just can make the magnet 23 of ultimate range and magnetic sensor 25 more close.Thus, can improve the motion detection precision of both direction.
In addition, the present invention is not subject to above-mentioned execution mode, for example can following distortion implement, and these execution modes also belong to technical scope of the present invention.
＜variation 1 〉
At above-mentioned the 1st execution mode, the shape of magnet 13 13r of concavity section forms at the outer circumferential side central portion of magnet 13 curve form towards interior all sides, but shown in (a), to form the shape of plane evener 33h also passable for the outer circumferential side central portion at magnet 33 of being shaped as of magnet 33 such as Figure 13.Thus, form the evener 33h of flat shape at the outer circumferential side central portion of magnet 33, enlarged the insensitive regional NC that magnetic sensor 15 does not carry out switch motion, have with different magnetic field when MD carries out 1 magnetic sensor 15 of a plurality of magnetic detection elements of switch motion so used, can enlarge operating body 11 slewing areas of carrying out switch motion.Thus, can provide the switching device that carries out the both direction switch motion of operating body 11 slewing area broadnesses with 1 magnetic sensor 15.
And shown in Figure 13 (b), being shaped as at the outer circumferential side central portion of magnet 43 of magnet 43 is also passable towards the rectangular shape concavity 43k of section of interior all sides.
＜variation 2 〉
And, at above-mentioned the 1st execution mode, the magnetic field of magnet 13 is towards the projected direction Dt of MD along operating portion 11t, but as shown in figure 14, also passable along the direction radially of the operating body 11 that carries out rotation action in the whole zone of the long side direction of magnet 13, and be magnetized even more ideal to this direction radially.
＜variation 3 〉
At above-mentioned the 1st execution mode, magnetic sensor 15 has used the magnetic detection element (GMR element) with giant magnetoresistance effect as the magnetic detection element, as long as but the magnetic detection element that can detect magnetic direction just can, MR (Magneto Resistive) element, AMR (Anisotropic Magneto Resistive) element or TMR (Tunnel Magneto Resistive) element also can.
＜variation 4 〉
At above-mentioned the 2nd execution mode, used only to possess 1 detection magnetic field towards 1 magnetic sensor 25 of the magnetic detection element (GMR element) of MD variation, but used the magnetic sensor 15 that uses at above-mentioned the 1st execution mode also passable.Figure 15 is the figure of involved magnetic switch device 201 variation 4 of explanation the present invention the 2nd execution mode, is the chart that the expression magnetic density changes.
Analog result as shown in figure 15, near the neutral position of operating body 11, exist magnetic sensor 15 not carry out the insensitive regional NC2 of switch motion, rotational angle at the operating body 11 that rotation action Kd causes is approximately ± 7deg near, carry out ON or OFF switch motion.According to said structure, owing near the neutral position of operating body 11, be provided with the insensitive regional NC2 that magnetic sensor 15 does not carry out switch motion, can detect respectively the switch motion when when making operating body 11 roll to a side and to the opposing party, rolling.Thus, can detect reliably the magnetic direction of both direction, and the switching device that can carry out the both direction switch motion can be provided.
＜variation 5 〉
Figure 16 represents the variation 5 of the magnetic switch device 201 that the present invention's the 2nd execution mode is involved, is the front view of explanation magnetic switch device 301.For convenience of explanation, omitted shell 12A here.
At above-mentioned the 2nd execution mode, used and only possessed 1 detection magnetic field towards 1 magnetic sensor 25 of the magnetic detection element (GMR element) of MD variation, but as shown in figure 16, form the structure of having used 2 one pole 1 output type magnetic sensor 45a and magnetic sensor 45b in this variation 5.Thereby, 2 magnetic detection elements (GMR element) have been used, make the magnetic field of carrying out switch motion different mutually towards MD, therefore can detect 2 different magnetic fields, thus the changes of magnetic field in the time of can detecting respectively the changes of magnetic field when making operating body 11 roll to a side and roll to the opposing party.Thus, not only can detect reliably the magnetic direction of both direction, but also the switching device that can carry out the both direction switch motion can be provided.
The present invention is not subject to above-mentioned execution mode, can suitably change enforcement in the scope that does not depart from the object of the invention.For example, in above-mentioned the 1st execution mode, illustrated to possess by the situation of opposite magnetic field towards 2 the magnetic detection elements (GMR element) that carry out switch motion as magnetic sensor 15, but magnetic sensor is not to be subject to this.That is, as long as magnetic sensor possesses 3 above magnetic detection elements, and at least 2 magnetic detection elements just can by carrying out switch motion such as the direction of opposite mutually mutual different magnetic field therein.
Claims (8)
1. magnetic switch device is characterized in that possessing: operating body has the operating portion of the operation of being rotated; Housing has and makes the outstanding peristome of aforesaid operations section and can keep rotationally the aforesaid operations body; Magnet is arranged on the aforesaid operations body; And magnetic sensor, detect the magnetic field of the above-mentioned magnet that the rotating operation of aforesaid operations body brings towards variation, and
Above-mentioned magnet is arranged on across the pivot center of an aforesaid operations body side opposite with aforesaid operations section, and is geomagnetic into the projected direction formation different magnetic poles along aforesaid operations section,
Above-mentioned magnetic sensor is provided in by on above-mentioned magnet and the opposed position of above-mentioned pivot center, and the neutral position in the rotation action of aforesaid operations body, the magnetic field of above-mentioned magnetic sensor on equipping position is towards along the aforesaid operations body that rotates radially
When the aforesaid operations body is rotated when operation from above-mentioned neutral position, the magnetic field on the equipping position of above-mentioned magnetic sensor to side's side rotating operation with to the opposing party's side rotating operation the time is towards across above-mentioned radially opposite.
2. magnetic switch device according to claim 1 is characterized in that, above-mentioned magnet has along the circular shape of aforesaid operations body rotation direction, and is geomagnetic into interior all sides and outer circumferential side formation different magnetic poles.
3. magnetic switch device according to claim 2, it is characterized in that, above-mentioned magnetic sensor has by magnetic field towards a plurality of magnetic detection elements that carry out switch motion, and in above-mentioned a plurality of magnetic detection element at least 2 by different mutually magnetic field towards carrying out switch motion.
4. magnetic switch device according to claim 3 is characterized in that, is provided with the insensitive zone that above-mentioned Magnetic Sensor does not carry out switch motion near the above-mentioned neutral position of aforesaid operations body.
5. magnetic switch device according to claim 4 is characterized in that, in the above-mentioned outer circumferential side central portion formation evener of above-mentioned magnet or the concavity section of caving in than burnishing surface.
6. the described magnetic switch device of any one in 5 according to claim 1 is characterized in that, is provided with when not carrying out rotating operation to make the aforesaid operations body reset to the reset components of above-mentioned neutral position.
7. magnetic switch device according to claim 6 is characterized in that, above-mentioned reset components is made of the distortion disc spring with winder and a pair of arm,
The above-mentioned winder of above-mentioned distortion disc spring is inserted logical at the rotation axial region of aforesaid operations body, and above-mentioned a pair of arm locked on aforesaid operations body and above-mentioned housing,
And be provided with when resetting to the above-mentioned neutral position of aforesaid operations body damping aforesaid operations body carries out homing action by above-mentioned distortion disc spring brake mechanism.
8. magnetic switch device according to claim 7, it is characterized in that, above-mentioned housing is locked near the part of the locking on the above-mentioned housing at above-mentioned a pair of arm has rake, and when the aforesaid operations body resets to the action of above-mentioned neutral position, by above-mentioned arm is slided at above-mentioned rake, make above-mentioned rake become above-mentioned brake mechanism.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP169809/2011 | 2011-08-03 | ||
| JP2011169809A JP5769339B2 (en) | 2011-08-03 | 2011-08-03 | Magnetic switch device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102915872A true CN102915872A (en) | 2013-02-06 |
| CN102915872B CN102915872B (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210271643.0A Expired - Fee Related CN102915872B (en) | 2011-08-03 | 2012-08-01 | Magnetic switch device |
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| Country | Link |
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| JP (1) | JP5769339B2 (en) |
| CN (1) | CN102915872B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014213396A1 (en) * | 2014-07-10 | 2016-01-14 | Zf Friedrichshafen Ag | Switching device and method for detecting an actuation of a switching device |
| TR201808850T4 (en) * | 2015-11-25 | 2018-07-23 | Makersan Makina Otomotiv Sanayi Ticaret Anonim Sirketi | A rotary switch. |
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| JP2006310654A (en) * | 2005-04-28 | 2006-11-09 | Teikoku Tsushin Kogyo Co Ltd | Sliding electronic component |
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| DE102006059822A1 (en) * | 2006-12-11 | 2008-06-12 | Integrated Electronic Systems !Sys Consulting Gmbh | Electric control device |
| CN101421807A (en) * | 2006-04-12 | 2009-04-29 | 博世力士乐Dsi公司 | Rotary control device for moving vehicle remote control |
| DE202009003485U1 (en) * | 2009-03-13 | 2010-07-22 | Rema Lipprandt Gmbh & Co. Kg | joystick |
| JP2010186584A (en) * | 2009-02-10 | 2010-08-26 | Tokai Rika Co Ltd | Lever switch device |
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2011
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|---|---|---|---|---|
| CN1630981A (en) * | 2001-02-24 | 2005-06-22 | 马尔夸特有限公司 | Device for adjustment of rotation angles |
| JP2002372403A (en) * | 2001-06-14 | 2002-12-26 | Alps Electric Co Ltd | Position sensor |
| JP2003132765A (en) * | 2001-10-29 | 2003-05-09 | Matsushita Electric Ind Co Ltd | Lever switch |
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| JP2006310654A (en) * | 2005-04-28 | 2006-11-09 | Teikoku Tsushin Kogyo Co Ltd | Sliding electronic component |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102915872B (en) | 2016-02-24 |
| JP2013033674A (en) | 2013-02-14 |
| JP5769339B2 (en) | 2015-08-26 |
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