KR102103536B1 - Shifting-range rotary sensor unit for a vehicle - Google Patents

Abstract

The present invention, a rotary shaft including a housing, a substrate disposed in the housing, a rotary shaft body disposed rotatably through the housing, and a rotary shaft wing disposed in an outer circumferential direction from the rotary shaft body, A sensing unit including a sensing magnet disposed on the rotary shaft wing to rotate and a sensing module disposed on the substrate to sense a rotating state of the sensing magnet, wherein the sensing magnet is provided from the center of rotation of the rotary shaft body. A first sensing magnet disposed on a radial direction, and a second sensing magnet disposed between the first sensing magnet and the rotary shaft body at a different radius from the first sensing magnet, and preset shift range of the vehicle At least one of the shift ranges Thus, only one sensing module of the sensing module forms an ON state, and two or more sensing modules of the sensing module form an ON state with respect to an area between preset shift ranges of a vehicle. Unit is provided.

Description

Range Rotary Sensor Unit {SHIFTING-RANGE ROTARY SENSOR UNIT FOR A VEHICLE}

The present invention relates to a rotary switch that forms a simple and compact structure for detecting a vehicle's condition, such as detecting a shift range of a vehicle, as a switch or sensor for detecting a rotational condition.

The rotary switch is used as one of the interface devices that not only detects the number of revolutions or rotational speed, but also senses the rotational motion and transmits the corresponding detection signal to a predetermined output unit so that the operation selected by the user can be executed at the output unit.

In particular, the rotary switch is used as an important switching mechanism for accurately transmitting the intention of the user, especially the driver, to the output unit. In particular, a vehicle such as a vehicle can provide a more stable and comfortable driving state beyond the function of a vehicle. A function is required as a means for various conveniences, and accordingly, a rotary switch is also required for emotional quality beyond simple sensing of rotation.

* Particularly, when a rotary switch is used to detect the shift range of a vehicle, more accurate sensing and considerable operational reliability are required. In the case of a recent switch, there is an aspect of switching from a contact type to a non-contact type. In the case of a recent non-contact type inverter switch, attempts have been made to achieve an accurate range output by arranging a number of magnets corresponding to a corresponding shift range.

However, in the case of such a switch, a compact configuration is difficult, and the arrangement positions between the magnets are approached, which increases the likelihood of malfunction due to mutual interference, thereby affecting operational reliability.

The present invention was invented to solve the problems of the prior art, the object of the present invention is a range rotary sensor having a compact and simple structure, which is a non-contact type switch or sensor that can increase the detection accuracy and operational reliability. It is to provide a unit.

The present invention, a rotary shaft including a housing, a substrate disposed in the housing, a rotary shaft body disposed rotatably through the housing, and a rotary shaft wing disposed in an outer circumferential direction from the rotary shaft body, The first sensing module and the rotary shaft body including a first sensing movable part which is disposed on the rotary shaft wing and rotates and a first sensing fixture that senses the rotation of the first sensing movable part in correspondence with the first sensing movable part. And a sensing unit including a second sensing module disposed on the substrate and a second sensing fixing unit spaced apart from the second sensing movable unit to sense rotation of the second sensing movable unit. The second sensing movable part is a magnet, and the second sensing fixing part is variable in the position of the second sensing movable part It provides a range rotary sensor unit that is a magnetic sensor including two elements for outputting a signal that changes according to.

In the range rotary sensor unit, the second sensing fixture includes two Hall sensors each having a Hall element that is spaced apart from the second sensing movable part, and the second sensing movable part is an outer circumference of the rotary shaft body. It may also include a magnetic sensing moving portion disposed on the arc.

In the range rotary sensor unit, the second sensing movable part is a corresponding area sensed by the second sensing fixture, and includes a plurality of second sensing movable areas, and for the second sensing movable area, the second The sensing movable part forms a linear output relationship between an output signal and a relative position between the magnet of the sensing movable part and the second sensing movable part by rotation of the rotary shaft body, and the linear output relationship with respect to the outside of the second sensing movable area It may further include a retained overstroke area.

In the range rotary sensor unit, the sensing unit detects a preset shift range including one or more of P (parking), D (driving), R (reverse), and N (neutral) of the vehicle, and the second sensing The second sensing movable region of the movable part corresponds to the preset shift range, a buffer range is provided between at least two adjacent shift ranges of the preset shift range, and the second sensing movable part corresponds to the buffer range The second sensing movable buffer area may be further included.

In the range rotary sensor unit, the length of the second sensing movable region may be greater than the length of the second sensing movable buffer region.

In the range rotary sensor unit, the second sensing movable part may be arranged with different polarities in a circumferential direction in which the rotary shaft body rotates and in a radial direction of the rotary shaft body.

In the range rotary sensor unit, the two Hall sensors may be sequentially arranged in the circumferential direction of the rotary shaft body.

In the range rotary sensor unit, the two Hall sensors may be sequentially arranged in the radial direction of the rotary shaft body.

In the range rotary sensor unit, the hall element of the hall sensor disposed on the magnet side of the sensing movable part among the two hall sensors may be arranged toward the outside in the radial direction and the other hall sensor may be arranged toward the inside in the radial direction. have.

In the range rotary sensor unit, the second sensing fixing portion may further include a holder disposed on the substrate to adjust and support a relative height with the sensing movable portion magnet.

In the range rotary sensor unit, the substrate includes a main substrate and a vertical substrate vertically disposed on the main substrate, the second sensing fixture is disposed on the vertical substrate, and the second sensing fixture is the second sensing It includes a magnetic element disposed spaced apart from the movable portion, the second sensing movable portion may include an arc-shaped sensing movable portion magnet disposed on the outer circumference of the rotary shaft body.

In the range rotary sensor unit, the second sensing fixing part includes a magnetic element spaced apart from the second sensing movable part, and the second sensing movable part is an arc-shaped sensing movable part magnet disposed on an outer circumference of the rotary shaft body. It may include.

In the range rotary sensor unit, the first sensing movable part is elastically supported by the first sensing movable elastic part 421 and the first sensing movable elastic part 421 which is accommodated and arranged on the rotary shaft wing. A first sensing movable contact portion 423 is rotated together with the rotary shaft wing, and the first sensing fixing portion is a corresponding position of the first sensing movable contact portion, and is fixed to the housing side in contact with the first sensing movable contact portion. It may be a contact.

In the range rotary sensor unit, the housing includes: a housing body on which the substrate is disposed, and a housing cover interlocking with the housing body to form an interior space, and a cover on one surface of the housing cover facing the housing body A guide is formed, and a position of the rotary shaft wing corresponding to the cover guide may be provided with a shaft wing guide capable of engaging with the cover guide to be rotatable relative to the cover guide.

In the range rotary sensor unit, an O-ring portion disposed in the rotation center side of the rotary shaft body may be further disposed in the radial direction of the rotary shaft body than the shaft wing guide.

In the range rotary sensor unit, a housing stopper for restricting rotation of the rotary shaft may be further provided inside the housing.

The present invention has the following effects.

First, the range rotary sensor unit according to an embodiment of the present invention has a semi-permanent durability through a configuration having a second sensing fixture having a hall sensor or a magnetic sensor having two elements, thereby increasing the resistance component of the contact. By solving the problem of disconnection, it is possible to provide a range rotary sensor unit having a structure that increases detection accuracy in a non-contact manner.

Second, the range rotary sensor unit according to an embodiment of the present invention, unlike the conventional complex structure of the permanent magnet magnetization type and the sensor spacing arrangement, through a concise arrangement may minimize the occurrence of errors and enable accurate detection. .

Third, the range rotary sensor unit according to an embodiment of the present invention enables a compact configuration to be applicable to a narrow and diverse package configuration to enable implementation of various products.

Fourth, the range rotary sensor unit according to an embodiment of the present invention may enable accurate detection without using complicated intermediate parts between the permanent magnet and the sensor. That is, a self-sensing structure is formed through a permanent magnet to improve the assembling property to enable a compact configuration, and it is also possible to achieve a configuration such as an increase in sensing range or individual sensitivity.

Fifth, the range rotary sensor unit according to an embodiment of the present invention may be capable of accurately detecting various configurations, such as detecting changes in the intensity of the magnetic flux and changes in the direction of the magnetic flux according to the magnetization configuration of the permanent magnet.

Sixth, the range rotary sensor unit according to an embodiment of the present invention forms a linear output relationship with respect to a region in which a permanent magnet rotates through a plurality of elements to enable accurate detection, and an example through the first sensing module For example, various operations may be implemented by setting operation or inactivity in a specific area of the vehicle shift range.

1 and 2 are a schematic perspective view and a bottom perspective view of a range rotary sensor unit according to an embodiment of the present invention.
3 is a schematic exploded perspective view of a range rotary sensor unit according to an embodiment of the present invention.
4 is a schematic partially enlarged perspective view of a range rotary sensor unit according to an embodiment of the present invention.
5 is a schematic partial perspective cross-sectional view of a range rotary sensor unit according to an embodiment of the present invention.
5 is a partially enlarged cross-sectional view of A of FIG. 4.
6 and 7 are partial perspective views showing an assembled state of a sensing movable magnetic body and a sensing movable magnet of a range rotary sensor unit according to an embodiment of the present invention.
8 is a partially cut-away perspective view showing an assembled state of a sensing movable magnetic body of a range rotary sensor unit according to an embodiment of the present invention.
9 is a diagram showing a shift range corresponding state between the second sensing movable part and the second sensing fixed part of the range rotary sensor unit according to an embodiment of the present invention.
10 and 11 are schematic perspective views of a sensing movable portion magnetic body and a modification thereof of the second sensing movable portion of the range rotary sensor unit according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, when adding reference numerals to the components of each drawing, it should be noted that the same components have the same reference numerals as possible even though they are displayed on different drawings. In addition, in describing the present invention, when it is determined that detailed descriptions of related well-known structures or functions may obscure the subject matter of the present invention, detailed descriptions thereof will be omitted.

The range rotary sensor unit 10 of the present invention is particularly a variety of sensor devices for detecting various conditions of a vehicle or a switch device for selecting various functions of a vehicle, for example, a switch unit used in a vehicle, through various rotation operations. In addition to the Inhibitor switch, steering wheel sensor, etc., which enable the detection of vehicle conditions, it is possible to implement various operating states, such as adjusting and controlling the operating state of various vehicle electronic devices such as audio, navigation, and air conditioning devices provided in the vehicle. It may be used to implement various selection functions of a vehicle, but may be used in various fields in a process of forming a switching operation by detecting a rotational motion and generating a predetermined detection signal, but in this embodiment, a shift range selected by a driver is detected. Interlocking with the shift lever side Is implemented as a shift range sensing switch and / or an inhibitor switch connected to a transmission spool (not shown).

The range rotary sensor unit 10 of the present invention includes a housing 100, a substrate 200, a rotary shaft 300, and a sensing unit 400.

The housing 100 includes a housing body 110 and a housing cover 120, wherein the housing body 110 and the housing cover 120 are formed with a housing cover fastening part and a housing body fastening part on each side, and the housing cover fastening. The part and the housing body fastening part are fastened to form an inner space.

The housing cover fastening part and the housing body fastening part are implemented as recesses or through holes formed in the outer periphery, and are fastened through a separate fastening member 101 so that the housing cover 120 and the housing body 110 form an internal space to form different configurations. Elements can be accommodated and unwanted separation departures can be prevented.

The sealing member 600 is disposed between the housing body 110 and the housing cover 120 to take the structure of blocking the internal space formed by the housing body 110 and the housing cover 120 from the outside and airtight.

 The housing body 110 is implemented as a base plate of a structure in which the first sensing fixture, which is described below in this embodiment, is insert injection-formed. In some cases, a separate main substrate may be further provided.

In this embodiment, the housing body 110 forms a structure supporting the substrate 200, and the housing cover 120 is engaged with the housing body 110 to form an inner space. A housing body through-hole 111 is formed in the housing body 110, and a housing cover through-hole 121 is formed at a corresponding position of the housing body through-hole 111 as one surface of the housing cover 120. The rotary shaft 300 is rotatably disposed in the through-hole 111 and the housing cover through-hole 121.

The second sensing module 402 of the sensing unit 400 to be described below is disposed on one surface of the substrate 200. The substrate 200 forms an electrical connection state with an external electrical device through a connector (not shown). As described above, the substrate may have a configuration further comprising a separate main substrate connected to the first sensing module of the sensing unit, but the second sensing module is disposed on the substrate in this embodiment.

The substrate 200 is disposed on one side of the housing body 110 to prevent interference with an arrangement area of the first sensing module, but this enables, as an example, the substrate to have a through-hole for the rotary shaft 300 through the substrate. Various configurations are possible within a range that prevents interference with other components, such as taking a structure to make it possible.

The rotary shaft 300 is formed in a cylindrical structure in which the shaft through-hole 301 is formed in the center, and an external object (not shown) is provided in the shaft through-hole 301 of the rotary shaft 300, for example, shifting in the present invention. A rotational state of the rotary shaft 300 may be formed by forming a through arrangement through a rod (shaft, not shown) interlocking with a lever or a separate actuator, and achieving axial rotation. The rotary shaft 300 is formed of a rotary shaft body 310 of a cylindrical structure having a predetermined thickness and a rotary shaft wing 320 which is formed to extend on the outer circumference of the rotary shaft body 310, so that the housing cover 120 and the housing body are formed. A stable mounting operation state can be formed within the space between 110.

The rotary shaft body 310 takes a cylindrical structure, and a predetermined groove is formed on an inner circumferential surface of the shaft through-hole 301 formed in the center of the rotary shaft body 310 to prevent relative rotation with an external object. You can. The rotary shaft body 310 has a cylindrical structure, and is rotatably mounted between the housing cover 120 and the housing body 110 to form a stable rotating structure within the housing.

The rotary shaft wing 320 is disposed radially from the center of the rotary shaft body 310 at the outer periphery of the rotary shaft body 310. The rotary shaft wing 320 is formed to extend in one direction of the rotary shaft body 310, the rotary shaft wing 320 may take a plurality of arrangements having a predetermined angle between the center of the rotary shaft body 310 Various variations are possible.

The first sensing movable part 420 of the first sensing module 401 of the sensing part 400 to be described below is disposed on the rotary shaft wing 320. The rotary shaft wing 320 is provided with a shaft wing movable portion mounting portion 321, and the first sensing movable portion 420 is movably accommodated in the shaft wing movable portion mounting portion 321. Although the shaft wing movable part mounting part 321 and the first sensing movable part 420 are shown in the case where one is provided, in some cases, a plurality of shaft wing movable parts may be arranged.

A component for stably guiding the rotation of the rotary shaft may be further disposed on the rotary shaft body 310 and the housing 100. That is, the housing 100 includes a cover guide 122 (see FIG. 5), and the rotary shaft 300 may further include a shaft wing guide 322. More specifically, the cover guide 122 is disposed on one surface facing the rotary shaft wing 320 of the rotary shaft 300 of the housing cover 120 of the housing 100, the cover guide 122 and the shaft wing guide ( 322) is arranged at the position of the climber from the center of rotation of the rotary shaft and has a structure capable of being operatively engaged with each other. In this embodiment, the cover guide 122 forms a groove structure, and the shaft wing guide 322 takes a protruding structure formed on one surface of the rotary shaft wing 320 so that the shaft wing guide 322 is provided on the cover guide 122. It takes a structure that is accommodated and arranged so as to be capable of relative rotation. It is also possible to achieve a stable rotational state of the rotary shaft through the receiving engagement structure.

In addition, when the rotary shaft body of the rotary shaft is rotated and the housing is rotated, the substrate 200 is disposed to be fixedly positioned inside the housing cover 120 and the housing body 110 due to moisture or foreign matter inflow due to the clearance of components. Damage or deterioration of circuit elements on the substrate can be prevented.

That is, the outer circumference of the rotary shaft body 310 is further provided with an O-ring portion 500, the rotary shaft body 310 is provided with a shaft body O-ring seating portion 313, corresponding to the shaft body O-ring mounting portion 313 As the position, the housing cover 120 is provided with a cover O-ring pressing portion 123, the O-ring portion 500 is disposed on the shaft body O-ring mounting portion 313, and the mounting coupling of the housing cover 120 and the housing body 110 is performed. When the o-ring portion 500 is pressurized to close the gap between the housing cover 120 and the housing body 110, and the cover o-ring pressing portion 123 takes a relatively long configuration, maximizing the moisture path, thereby preventing moisture or foreign matter from the central portion. Blocking or minimizing the entry into the space in which the substrate 200 is disposed may be minimized.

The sensing unit 400 includes a first sensing module 401 and a second sensing module 402. The first sensing module 401 includes a first sensing movable part 420 and a first sensing fixed part 410. The second sensing module 402 includes a second sensing movable part 440 and a second sensing fixed part 430. The first sensing movable part 420 is disposed and rotated on the rotary shaft wing 320, and the first sensing fixture 410 detects the rotation of the first sensing movable part 420 in correspondence with the first sensing movable part 420. do. That is, the first sensing fixing part is fixed to the position and is disposed on the housing side, and the first sensing movable part 420 is disposed on the rotary shaft wing 320 and rotates together with the rotary shaft wing 320 to position the fixed first sensing fixture. The rotation detection is performed by interlocking with the 410. The first sensing fixing unit and the first sensing movable unit may be configured in a variety of ranges to detect a predetermined position change, but in the exemplary embodiment of the present invention, the first sensing module 401 takes a contact-type switching structure. That is, the first sensing movable part 420 includes a first sensing movable elastic part 421 and a first sensing movable contact part 423. The rotary shaft wing 320 is provided with a shaft wing mounting portion 321, and the first sensing movable elastic portion 421 and the first sensing movable contact portion 423 are accommodated in the shaft wing mounting portion 321. The first sensing movable elastic portion 421 has one end contacting the inside of the shaft wing mounting portion 321 and the other end is in contact with the first sensing movable contact portion 423 to elastically support the first sensing movable contact portion 423. . The first sensing movable contact unit 423 takes the shape of a 'c', which is not limited to this as an example. One end of the first sensing movable contact portion 423 is elastically supported in contact with the first sensing movable elastic portion, and the other end is in contact with the first sensing fixing portion 410, which is disposed in a corresponding position, and is electrically connected to the contact position change. Signal fluctuations occur. In this embodiment, the first sensing module has a structure in which one is provided, but a plurality of rotary shaft wings and a plurality of positions may be disposed at corresponding positions, and a structure in which a single number or a plurality of rotary shaft wings and a plurality of positions are disposed at corresponding positions Various modifications are possible, such as taking.

The first sensing fixing unit 410 is implemented as a fixed contact that can contact the first sensing movable contact unit 423 on the housing side in a corresponding position of the first sensing movable contact unit 423, that is, within a movable range. In the example, a structure in which an insert is formed in the housing body 110 of the housing 100 is taken, but the present invention is not limited thereto, and a separate substrate may be provided and a substrate may be formed of a conductive line formed thereon, such as the first sensing movable part. Various configurations are possible within a range that enables detection of a predetermined position through an intermittent contact with the first sensing movable contact portion 423 of 420.

The first sensing module 401 according to an embodiment of the present invention has a structure that detects only P (parking) and N (neutral) states among the shift ranges of the vehicle. That is, the first sensing fixing part 410 is the first sensing movable part 420 only in a region for a specific shift range, for example, P (parking) and N (neutral) states among the shift ranges of the vehicle among the rotation areas of the rotary shaft. By taking a structure that maintains contact with or releases contact with and forms a signal discrimination with other shift ranges, it prevents safety accidents such as sudden start of the vehicle by preventing starting when the vehicle starts out of the P, N shift range. You can also take the configuration.

In the present embodiment, the first sensing module 401 is mainly described as a contact switch structure, but in some cases, the first sensing module may also be implemented in a non-contact manner, and further provided with a separate electronic relay to separate P / Various configurations are possible according to the design specifications, such as the N terminal or the R terminal performing the flashing function of the backup lamp, or the like, to achieve an energization.

The second sensing module 402 includes a second sensing movable part 440 and a second sensing fixed part 430, and the second sensing movable part 440 is disposed on the rotary shaft body 310 and the second sensing fixed part 430 is spaced apart from the second sensing movable unit 440 to detect the rotation of the second sensing movable unit 440. In the present embodiment, the second sensing movable unit 440 includes a magnet, and the second sensing fixed unit 430 is a magnetic sensor that outputs a signal that changes according to a position change of the second sensing movable unit 440. Here, the magnetic sensor, which is the second sensing fixture 430, may be implemented as a packaged Hall IC sensor having a structure in which a hall element is disposed facing a movable part formed of a magnetic body and a magnet, or may be implemented as an MR sensor. Various selections are possible within a range that detects a change in the magnetic field generated by the second sensing movable part.

The second sensing fixing unit 430 fixedly mounted on the housing side to the corresponding position of the second sensing movable unit 440 has two sensor elements to take a structure of outputting a plurality of output signals. In this embodiment, the second sensing fixture 430 includes two Hall sensors, and the second sensing fixture 430; 430-1, 430-2 includes respective Hall elements 433; 433-1, 433-2. Included, the Hall element 433; 433-1, 433-2 outputs a signal for a position change with respect to the sensing movable part magnet as the second sensing movable part 440 that makes a relative rotational motion at a corresponding position, that is, a specific area, namely Output signals, such as voltage, form a linear output relationship with respect to the plurality of second sensing movable regions 440P, 440R, 440N, and 440D, which are described below, to provide relative rotation of both, and ultimately, a predetermined angular displacement of the rotary shaft body. With respect to linear output values, it is possible to derive more accurate output values.

In addition, the overstroke in which the linear relationship of the output value for a predetermined rotational displacement is maintained outside the plurality of second sensing movable regions 440P, 440R, 440N, 440D, that is, on the side or both sides of the second sensing movable region. It is also possible to provide an active response by providing an area to form a section that enables complementary work such as correction by outputting an active response value even for excessive rotation.

More specifically, the second sensing fixture 430 has a structure having two Hall elements 433, and in the present embodiment of FIG. 5, the second sensing fixture 430 has one Hall element, respectively. It includes two Hall sensors.

The second sensing fixture 430 implemented by the two Hall sensors of the present invention may have a structure that is sequentially arranged in the circumferential direction to improve the assemblability (a in FIGS. 10A and 11A). In the case of such a structure, it is possible to obtain a stable sensor performance by arranging the hall sensor to have the same air gap with respect to the second sensing movable part, but the position of the Hall elements of the two Hall sensors is slightly different from each other, so that the second sensing movable part It is accompanied by the fact that they do not have the same plane, for example, an operating angle as a rotational position, and thus show somewhat different output performance between output values.

The present invention may take a structure in which two Hall sensors are arranged on the same radial segment from the center of rotation of the rotary shaft body to the radial direction as in this embodiment (Fig. 10B, Fig. 11). B).

In the case of this structure, it is possible to align the two Hall sensors with respect to the second sensing movable part so that they can detect the same position, that is, the same operating angle, so that the position of the Hall element of the Hall sensor is set similarly, that is, the air gap is set similarly. In order to achieve this, it was possible to obtain a uniform and stable performance by taking opposing structures and substantially equalizing the output performance from each Hall sensor. That is, as illustrated in FIGS. 5 to 7, the Hall sensor provided in the Hall sensor toward the center of rotation of the rotary shaft body among the two Hall sensors, that is, toward the second sensing movable part 440 is disposed to face the opposite side. The other Hall sensor may take a structure that is arranged toward the second sensing movable part 440 side. As shown in FIG. 6, the air gap between the second sensing movable part 440 and the second sensing fixed part 430 is a reference numeral a, of the second sensing movable part 440 and the second sensing fixed part 430. When the distance to the Hall element of the inner Hall sensor is indicated by reference numeral b and the distance to the Hall element of the outer Hall sensor of the second sensing movable unit 440 and the second sensing fixing unit 430 is indicated by reference numeral c, a The relationship << b 관계 c is formed. Through such a configuration, it is also possible to take a structure that minimizes the distance difference from the second sensing movable unit such as the air gap in the two Hall sensors, thereby enabling more accurate output values.

In addition, the magnetic sensor, which is the second sensing fixture 430, may be implemented as a packaged Hall IC sensor having a structure in which a hall element is disposed facing a movable part formed of a magnetic body and a magnet, or may be implemented as an MR sensor. As another embodiment of the present invention, in Figures 10 and 11 (c), two devices may form a dual sensor structure 430-D embedded in a single package. In the case of such a structure, it is possible to reduce the manufacturing cost by minimizing the output performance variation between two sensors having each element and minimizing the assembly process caused by individual sensors. In the case of such a dual sensor structure, a configuration in which a separate PCB is applied or a single PCB may be assembled may be employed, and in FIGS. 10, 11 (c) and (d), a modification of the arrangement of the substrate as a PCB, respectively, as described below A magnetization modification example accompanying this is shown. In the case of such a structure, the objective of the present invention is achieved by simply changing the magnetization configuration of the permanent magnet 400 of the existing shape and simply applying the second sensing fixture 430-D of the dual sensor structure to improve the assembly. You may.

In addition, in addition to the structure of measuring the intensity of magnetic flux density for each displacement and outputting a corresponding voltage, the second sensing fixture may take a method of detecting a magnetic flux direction and output a corresponding voltage. That is, as illustrated in FIGS. 10 and 11 (e), the structure 430-D for detecting the direction of the magnetic flux without detecting the intensity of the magnetic flux density is taken, and the rotation angle of the corresponding rotary shaft body is sensed to ultimately respond. It is also possible to calculate the shift range of the vehicle and the like. In this case, the magnetization structure of the second sensing movable part may take only the simple alternating arrangement structure of the N, S poles in the circumferential direction (440-A). At this time, the second sensing fixture 430-D is disposed on one surface of the substrate 200 vertically disposed, and the second sensing fixture 430-D is of the second sensing movable portion 440-A. It may be arranged to be spaced apart by a predetermined distance (d) on the outer periphery to detect the current rotational position through the detection of the direction of the magnetic field.

The second sensing fixing unit 430 is a holder for adjusting and supporting the height of the second sensing fixing unit so that the sensing unit can adjust the height of the second sensing fixing unit so that a more accurate sensing state can be formed through an accurate arrangement in a magnetic field region with the second sensing movable unit 440. 450). The holder 450 is provided with an accommodating portion for mounting each hall sensor of the second sensing fixture 430, and a coupling member for coupling with the substrate may be further provided on the lower surface.

In the above embodiment, the two Hall elements of the second sensing fixture 430 are respectively arranged to be biased to one side, which is the intermediate linear magnetic flux density changer in the operating angle according to the corresponding design specification of the second sensing movable region. This is for use, and its placement position can be variously modified according to design specifications.

The second sensing fixture 430 in this embodiment may take an integral structure of elements, that is, Hall elements or magnetic elements. That is, the second sensing fixture 430 may form an insert molding structure.

8 and 9, respectively, a corresponding arrangement structure and an output diagram of the second sensing fixing part 430 and the second sensing movable part 440 are shown, wherein the second sensing movable part 440 formed of a magnet has a rotary shaft body ( 310), a predetermined position change occurs, and the second sensing fixture 430 detects a magnetic field change formed by a relative position change of the second sensing movable part 440 to execute a predetermined position change detection function. , Make it possible to check the shift range change corresponding to the position change. In FIG. 8, the relative rotational displacement with respect to the second sensing movable unit 440, that is, the magnetic flux density sensed by the second sensing fixture 430 with respect to the rotation angle, forms a linear relationship with respect to the second sensing movable area, and the second A structure that forms a substantially linear output relationship is maintained even on the outer periphery of the sensing movable area, but when it is within an excessive range, a nonlinear output relationship is formed. The output diagram is a diagram obtained for one Hall sensor, and the output values sensed and output by the other Hall sensor form a symmetrical relationship.

9 is a diagram showing all output values output from the second sensing fixture 430 implemented by two Hall sensors. It is mounted on the rotary shaft body 310 and rotates together, thereby forming a rotation angle range by the second sensing movable unit 440, that is, forming a relationship that is symmetrical to each other with respect to the stroke, and thus more accurate using the output value of each Hall sensor. The output value derivation and self-checking functions can also be executed.

In this embodiment, the second sensing movable unit 440 includes a plurality of second sensing movable areas 440P, 440R, 440N, 440D. The plurality of second sensing movable regions 440P, 440R, 440N, and 440D form a predetermined allocated corresponding region, as an embodiment of the present invention, when implemented as an inhibitor switch that detects a shift range of a vehicle. The sensing operation area corresponds to the shift range of the vehicle. That is, the second sensing movable region and the second sensing fixing part 430 on the line segment (line OO) where the rotary shaft 300 rotates to connect the rotation center O of the rotary shaft 300 and the Hall element 433 When the elements of the corresponding arrangement are arranged, the second sensing fixture 430 detects a magnetic field corresponding to the corresponding second sensing movable region 440P, 440R, 440N, 440D, that is, according to the rotational state of the rotary shaft. A change in magnetic flux between the second sensing movable regions 440P, 440R, 440N, and 440D and the second sensing fixture 430 is sensed, so that the output value of the output has a different value. That is, in this embodiment, the sensing unit 400 is a vehicle shift range, that is, a preset shift range including one or more of P (parking), R (reverse), N (neutral), and D (driving) of the vehicle. In sensing, each of the second sensing movable regions 440P, 440R, 440N, and 440D corresponds to the shift ranges of the vehicle P (parking), R (reverse), N (neutral), and D (driving).

In this way, the second sensing movable regions (440P, 440R, 440N, 440D) implemented with a magnetic material and the signals sensed through changes in magnetic flux sensed by the Hall element or the magnetic element of the second sensing fixture 430 are utilized. The current shift range can be accurately detected. In this embodiment, in this embodiment, an angle range of α is formed on both sides around R and N, and an overstroke region is provided on their outermost sides to maintain or correct a predetermined linear output relationship. You can also take a rescue.

In addition, in some cases, a buffer range (PR, RN, ND) between at least two adjacent shift ranges among a preset shift range to prevent a malfunction of a signal or an unnecessary frequent shift range change to prevent an unwanted shift shock or a safety accident. A may be further provided, the second sensing movable unit 440 may further include a second sensing movable buffer area (440P-R, 440R-N, 440N-D; see FIG. 9) corresponding to the buffer range.

As described above, by forming a sensing movable buffer area as an intermediate area between sensing movable areas corresponding to each shift range, stable shift detection and sensing reliability can be secured. Even in this case, a change in the magnetic field due to a change in the relative position between each of the second sensing movable buffer areas 440P-R, 440R-N, and 440N-D and the second sensing fixture 430 is detected to set a predetermined shift range. It is also possible to take a method of selecting the shift output value in a predetermined intermediate region by using the shift range and other surrounding detection signals from the previous step.

Here, the length of the second sensing movable buffer areas 440P-R, 440R-N, and 440N-D, that is, the length in the circumferential direction, is less than the length of the second sensing movable area 440P, 440R, 440N, 440D Have In this way, the output portion due to the frequent fluctuation signal output between the two sensing movable regions is formed through a method of forming a difference in length in the rotational direction of the rotary shaft, that is, a circumferential direction, such as taking a hysteretic configuration, for example, of a vehicle. Damage to the transmission may be prevented, and the sensing of the second sensing movable areas 440P, 440R, 440N, and 440D may be more accurately performed.

On the other hand, in the present embodiment, the second sensing fixture 430 has a structure in which two Hall elements are each equipped with a Hall sensor, but in some cases, the second sensing fixture is a single MR sensor having two magnetic elements, It may also be implemented as a GMR sensor or an AMR sensor. 10 (c) to (e) and FIG. 11 (c) to (e), the second sensing fixture 430 as a single magnetic sensor having two magnetic elements is disposed. The second sensing fixture 430 may have a structure, and the substrate 200 may further include a vertical substrate 220 in addition to the main substrate 210 and a vertical substrate 220 vertically disposed on the main substrate 210. Mounted on one surface of the second sensing movable unit 440 may take a structure vertically disposed on the outer periphery (Fig. 10 (c) and 11 (c)), the second sensing fixture 430 is the main substrate It may be disposed on one surface of the substrate 200 as a second sensing movable portion 440 is disposed under the sensing structure (Fig. 10 (d) and 11 (d)), the second sensing fixture ( 430) is disposed on one surface of the substrate 200 as the main substrate, but takes a structure in which the substrate 200 is vertically arranged and is disposed opposite to the outer periphery of the 2 sensing movable unit 440 Various modifications are possible, such as taking the structure (Figs. 10 (e) and 11 (e)).

The sensing movable part magnet implemented by the second sensing movable part 430 in this embodiment forms a magnetizing structure of the N-pole and the S-pole, wherein the magnetizing structure has different polarity arrangements in the radial direction and different polarity arrangements in the circumferential adjacent direction. Structure (see FIG. 8). Through this four-pole structure, a more accurate magnetic flux arrangement is achieved with respect to the placement position of the second sensing fixture 440 to achieve a more accurate sensing structure.

On the other hand, the structure of the second sensing movable part is for the case of FIGS. 10 (a), (b), (c) and 11 (a), (b), (c). In the case of (d) to (e), the second sensing movable part 430 may have a different magnetization arrangement structure. That is, in the case of FIGS. 10 and 11 (d), the sensing movable part magnet of the second sensing movable part 430 achieves different polarity arrangement in the circumferential direction and also in the longitudinal direction of the rotation shaft of the rotary shaft body 310. A structure (440-V) forming a different polarity arrangement is formed, and in the case of FIGS. 10 and 11 (e), the sensing movable portion magnet of the second sensing movable portion 430 forms a different polarity arrangement in the circumferential direction, but is N-pole Various modifications such as the formation of a plurality of alternating arrangement structures 440-A of the same polarity of N, S, N, S or S, N, S, N, not 1: 1 singular arrangement of the S and S poles It is possible. That is, along with the number of magnetizers such as 4-pole magnetizer, 6-pole magnetizer, and 8-pole magnetizer, the direction of the magnetizer is continuously arranged in the radial direction, continuously arranged in the circumferential direction, and / or continuously arranged in the rotational length direction, or a combination thereof. Various modifications may be made to the direction of the magnetizer and the number of magnetizers according to the design specifications.

On the other hand, the second sensing fixture 430 may be connected to the substrate, but may have a structure in which it is placed in direct contact with the substrate, and in some cases, a separate sensing holder for positioning and adjusting the second sensing fixture 430 ( 450).

The sensing holder 450 may be disposed between the sensing molding unit 435 and the substrate 200 to support the sensing molding unit 435 to implement a reliable sensing function through securing a stable sensing position.

On the other hand, the present invention may further include a component that prevents excessive rotation of the rotary shaft. That is, the housing body 110 and the rotary shaft wing 320 is further provided with a component that forms a rotational stop through contact of both, the housing body 110 is provided with a body stopper (117, see FIG. 6) It is also possible to prevent excessive rotation of the rotary shaft through limited contact with the rotary shaft wing 320. The structure for preventing the additional change of the shift range according to the rotational direction can be variously configured in a range that implements a predetermined stopping function.

The first sensing module 401 and the second sensing module 402 of the sensing unit 400 of the present invention, if necessary, have separate MCUs to output a signal combination configuration or take an ASIC circuit configuration as a single signal combination. And a configuration enabling various signal outputs.

As described above, the housing 100 of the range rotary sensor unit 10 in the present embodiment is disposed in the vehicle, the substrate 200 is accommodated in the housing, and the housing 100 is used for shift operation of the vehicle driver. An embodiment implemented as a vehicle shift range range rotary sensor unit as an inhibitor switch for detecting a shift range of a vehicle is provided by having a rotary shaft 300 and a sensing unit 400 that are rotatably disposed by rotation, In the range provided with the second sensing module as in the present invention, various sensors or switches can be implemented.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and variations without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the claims below, and all technical spirits within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

10 ... range rotary sensor unit
100..housing 110 ... housing body
120 ... housing cover 200 ... substrate
300..Rotary shaft 400 ... Sensing part

Claims (14)

A rotary shaft comprising a housing, a substrate disposed in the housing, a rotary shaft body rotatably disposed through the housing, and a rotary shaft wing disposed in an outer circumferential direction from the rotary shaft body, and the rotary shaft wing A first sensing module including a first sensing movable part which is disposed and rotated and a first sensing fixture that senses the rotation of the first sensing movable part in correspondence with the first sensing movable part, and a second disposed on the rotary shaft body A sensing unit including a second sensing module having a second sensing fixture for sensing rotation of the second sensing movable unit is spaced apart from the second sensing movable unit on the sensing movable unit and the substrate, and the second sensing movable The part is a magnet, and the second sensing fixing part changes according to the positional change of the second sensing movable part. It is a magnetic sensor including two elements for outputting a signal, and the second sensing fixture includes two Hall sensors each having a Hall element spaced apart from the second sensing movable portion, and the second sensing movable portion , Includes an arc-shaped sensing movable part magnet disposed on the outer periphery of the rotary shaft body,
The two Hall sensors are sequentially arranged in the radial direction of the rotary shaft body,
The substrate includes a main substrate and a vertical substrate vertically disposed on the main substrate, the second sensing fixture is disposed on the vertical substrate, and the second sensing fixture is spaced apart from the second sensing movable portion Including, The second sensing movable unit, Range rotary sensor unit characterized in that it comprises an arc-shaped sensing movable unit magnet disposed on the outer circumference of the rotary shaft body. According to claim 1,
The second sensing movable part is a corresponding area sensed by the second sensing fixing part, and includes a plurality of second sensing movable areas, and for the second sensing movable area, the second sensing movable part is of the rotary shaft body. A linear output relationship between an output signal and a relative position between the sensing movable unit magnet and the second sensing movable unit by rotation, and further comprising an overstroke area in which the linear output relationship is maintained outside the second sensing movable area Range rotary sensor unit, characterized in that. According to claim 2,
The sensing unit detects a preset shift range including one or more of P (parking), D (driving), R (reverse), and N (neutral) of the vehicle,
The second sensing movable region of the second sensing movable unit corresponds to the preset shift range,
A buffer range is provided between at least two adjacent shift ranges of the preset shift range,
The second sensing movable unit further includes a second sensing movable buffer area corresponding to the buffer range. According to claim 3,
The length of the second sensing movable region is greater than the length of the second sensing movable buffer region. The method of claim 4,
The second sensing movable unit is a range rotary sensor unit, characterized in that different polarities are arranged in a circumferential direction in which the rotary shaft body rotates and a radial direction of the rotary shaft body. delete delete According to claim 1,
The range rotary sensor unit, characterized in that the Hall element of the Hall sensor disposed on the sensing movable part magnet side of the two Hall sensors is arranged toward the outside in the radial direction and the other Hall sensor is arranged toward the inside in the radial direction. The method of claim 8,
The second rotary fixing unit is disposed on the substrate, and further comprising a holder for adjusting and supporting a relative height with the sensing movable part magnet. delete According to claim 1,
The second sensing fixing part includes a magnetic element that is spaced apart from the second sensing movable part,
The second sensing movable unit includes a arc-shaped sensing movable unit magnet disposed on an outer circumference of the rotary shaft body. According to claim 1,
The first sensing movable part:
The first sensing movable elastic portion 421 is accommodated in the rotary shaft wing,
The first sensing movable contact portion 423 is elastically supported by the first sensing movable elastic portion 421 and rotated together with the rotary shaft wing.
The first sensing fixed portion is a range rotary sensor unit, characterized in that a fixed contact capable of contacting the first sensing movable contact portion on the housing side to a corresponding position of the first sensing movable contact portion. According to claim 1,
The housing is:
A housing body on which the substrate is disposed,
It has a housing cover to form an interior space in engagement with the housing body,
A cover guide is formed on one surface of the housing cover facing the housing body,
Range rotary sensor unit, characterized in that provided in the position corresponding to the cover guide of the rotary shaft wing relative to the cover guide to be engaged with the cover guide to be movable relative to the shaft wing guide. According to claim 1,
The range rotary sensor unit further comprises a housing stopper for restricting rotation of the rotary shaft inside the housing.

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