KR101567490B1 - steering angle sensor unit - Google Patents

Abstract

In the process of assembling the constituent members, the center of the first and second gears (i.e., the respective magnets) are accurately positioned at the center of the first and second rotary holes IC mounted on the printed circuit board A steering angle sensor unit constituting a torque angle sensor assembly is disclosed which can be matched. According to an embodiment of the present invention, a steering angle sensor unit constituting a torque angle sensor assembly includes a main gear rotatably mounted at a center portion thereof, a first rotatable gear engaged with the main gear, A first casing including a rotatable second gear; A second casing coupled to the first casing; And a printed circuit board disposed between the first casing and the second casing in a state fixed to the second casing and having two angle sensing means mounted thereon. In this case, two angle sensing means and corresponding magnets are fixed to the end of the rotation shaft of the first gear and the second gear, respectively. On the inner surface of the first casing and the surface of the printed circuit board, And aligning guide means for accurately aligning the first housing with the first housing. According to another embodiment of the present invention, a steering angle sensor unit constituting a torque angle sensor assembly includes a first casing including a main gear rotatably mounted at a center portion thereof; A printed circuit board coupled to the first housing and having two angle sensing means mounted thereon; A first gear engaged with the main gear and a second gear engaged with the first gear are rotatably mounted on one surface of the first gear and a bracket fixed to the printed circuit board at a predetermined interval through a plurality of fastening structures ; And a second casing coupled to the first casing with the bracket and the printed circuit board interposed therebetween.

Steering angle sensor unit, bracket, magnet

Description

Steering angle sensor unit < RTI ID = 0.0 >

The present invention relates to a steering angle sensor unit, and more particularly, to a steering angle sensor unit having a structure capable of accurately aligning a magnet mounted on a gear and a rotary hole IC when assembling components.

A steering apparatus used in a vehicle is a device that changes the direction of a steering wheel through a steering wheel to change the traveling direction of the vehicle while driving.

In recent years, an electric power steering system (hereinafter referred to as "EPS system") is applied to a steering apparatus in consideration of driving stability and user convenience, and this EPS system includes a steering angle measuring apparatus and a torque measuring apparatus .

The steering angle measuring device includes a steering angle sensor, which measures the degree of steering of the steering wheel required to control the vehicle while driving.

In addition, the torque measuring device is equipped with a torque sensor, which measures the torque applied to the torsion bar so that the steering wheel can be smoothly operated.

The steering angle sensor and the torque sensor are separately united with the other members in the torque angle sensor module.

In the steering angle sensor unit, the magnet mounted on the gear and the rotary hall IC must be accurately aligned in order to accurately measure the degree of steering of the steering wheel. This will be described in more detail as follows.

FIG. 1 is an exploded perspective view of a steering angle sensor unit constituting a general torque angle sensor assembly, and FIG. 2 is a plan view of the respective members shown in FIG.

The steering angle sensor unit 1 constituting the torque angle sensor assembly includes a first casing 10, a printed circuit board 30, and a second casing 20.

In the first housing 10, a main gear 13, which rotates in accordance with the rotation of a position rotor, is rotatably disposed at a central portion thereof. On the other hand, two recesses 11-1 and 12-1 are formed on the outer periphery of the inner surface of the first housing 10, that is, the periphery of the main gear 13, and the first and second gears 11 and 12, Are respectively rotatably mounted in the recesses 11-1 and 12-1 by a rotary shaft.

The first and second gears 11 and 12 are formed of gear portions 11a and 12a and disk portions 11b and 12b having a diameter smaller than that of the gear portion in the gear portion (refer to FIG. 3). Only the disk portions 11b and 12b of the gears 11 and 12 are located in the recesses of the first casing 10 and the teeth portions 11a and 12a are exposed to the outside.

On the other hand, the first gear 11 (i.e., the gear portion 11a) is engaged with the main gear 13, and the second gear 12 is engaged with the first gear 11. Accordingly, the first and second gears 11 and 12 are rotated in opposite directions to each other by the rotation of the main gear 13. On the other hand, the magnets M1 and M2 are fixed to the ends of the rotating shafts of the first and second gears 11 and 12, respectively.

A circular opening 33 corresponding to the main gear 13 mounted on the first casing 10 is formed at the center of the printed circuit board 30 disposed between the first casing 10 and the second casing 20 And a rotary hall IC (first and second rotary hole ICs 31 and 32) is fixed around the opening 33. In addition, a plurality of electronic circuit components (not specifically shown in the drawing) are disposed in the outer frame portion.

The steering angle sensor unit 1 is assembled by fastening the second casing 20 to the first casing 10 while the printed circuit board 30 is fixed on the second casing 20. [

Fig. 3 shows the first and second gears 11 and 12 mounted on the first casing 10 shown in Fig. 2 and the first and second gears 11 and 12 mounted on the printed circuit board 30 after the steering angle sensor unit is assembled. 2 Rotary Hall ICs 31 and 32. The central portion of the first and second gears 11 and 12 mounted on the first casing 10 is connected to the printed circuit board 30 And the first and second rotary hole ICs 31 and 32 mounted on the first rotary hole IC 31 and the second rotary hole IC 31 respectively.

In the steering angle sensor unit 1, the first and second gears 11 and 12 rotate in opposite directions according to the rotation of the position rotor, that is, the rotation of the main gear 13, 11 and 12) are also rotated (M1 and M2 in Fig. 1 (rotating state)).

4 is a diagram showing the relationship between the magnets M1 and M2 fixed to the centers of the first and second gears 11 and 12 and the first and second rotary hole ICs 31 and 32, The change of the magnetic force due to the rotation of the magnets M1 and M2 fixed to the ends of the rotary shafts of the second gears 11 and 12 is transmitted to the first and second rotary hole ICs 31 and 32, 2 rotary Hall ICs 31 and 32 output a sensing signal, respectively.

In order to maintain the accuracy of the steering angle signal outputted from the first and second rotary Hall ICs 31 and 32 in the steering angle sensor unit 1 having the above structure, the steering angle sensor unit 1 is fixed to the first and second gears 11 and 12 The magnetized magnets M1 and M2 must be precisely aligned with the centers of the corresponding first and second rotary hole ICs 31 and 32. [

That is, when the magnets M1 and M2 fixed to the first and second gears 11 and 12 do not exactly correspond to the centers of the first and second rotary hole ICs 31 and 32, the magnets M1 and M2 The first and second rotary Hall ICs 31 and 32 can not accurately sense the amount of the magnetic force generated in the first and second rotary Hall ICs 31 and 32, and as a result, the accurate steering angle can not be measured.

The centers of the magnets M1 and M2 mounted on the first and second gears 11 and 12 and the centers of the first and second rotary hole ICs 31 and 32 are precisely aligned with each other due to the following factors it's difficult.

(A) an assembly error occurring when the printed circuit board 30 is mounted on the second casing 20;

(2) an assembly error occurring when the second casing 20, on which the printed circuit board 30 is mounted, is assembled with the first casing 10; And

(C) the flow of the first and second gears 11 and 12 in the concave portions 11-1 and 12-1 formed in the first housing 10;

In particular, an error is most likely to occur when the second casing 20, on which the printed circuit board 30 is mounted, is assembled with the first casing 10 on which the first and second gears 11 and 12 are mounted, The centers of the magnets M1 and M2 fixed to the first and second gears 11 and 12 do not exactly coincide with the centers of the corresponding first and second rotary hole ICs 31 and 32. [

According to an aspect of the present invention, there is provided a method of manufacturing a semiconductor device, including the steps of assembling the first and second gears (i.e., magnets) And to provide a steering angle sensor unit constituting a torque angle sensor assembly which can precisely match the center of an IC.

According to an embodiment of the present invention, a steering angle sensor unit constituting a torque angle sensor assembly includes a main gear rotatably mounted at a center portion thereof, a first rotatable gear engaged with the main gear, A first casing including a rotatable second gear; A second casing coupled to the first casing; And a printed circuit board disposed between the first casing and the second casing in a state fixed to the second casing and having two angle sensing means mounted thereon.

In this case, two angle sensing means and corresponding magnets are fixed to the end of the rotation shaft of the first gear and the second gear, respectively. On the inner surface of the first casing and the surface of the printed circuit board, And aligning guide means for accurately aligning the first housing with the first housing.

The alignment guide means in this embodiment includes at least two bosses formed on the inner surface of the first casing and extending vertically with a predetermined length; And at least two through holes formed on the printed circuit board and corresponding to the bosses of the first housing, respectively.

Here, it is preferable that the first casing includes two recesses formed to respectively receive the first and second gears, and the two bosses are formed at positions adjacent to the two recesses.

According to another embodiment of the present invention, a steering angle sensor unit constituting a torque angle sensor assembly includes a first casing including a main gear rotatably mounted at a center portion thereof; A printed circuit board coupled to the first housing and having two angle sensing means mounted thereon; A bracket that is rotatably mounted on a surface of a first gear and a second gear that are engaged with the first gear and the second gear and rotatably mounted on the surface of the first gear and is fastened to the printed circuit board at predetermined intervals through a plurality of fastening structures; And a second casing coupled to the first casing with the bracket and the printed circuit board interposed therebetween.

At the end of the rotary shaft of the first and second gears mounted on the bracket, two angle sensing means and corresponding magnets are respectively fixed.

Here, the first gear is mounted on the inner side of the second gear, so that the first gear is engaged with the main gear in a state in which the first gear is exposed to the outside of the bracket.

The fastening structure for fastening the bracket to the printed circuit board, which is applied in this embodiment, includes: two elastic pieces extending from the outer end of the bracket at a predetermined interval; And a through hole formed in the printed circuit board corresponding to the resilient piece of the bracket. A jaw portion formed of a lower inclined surface and an upper horizontal surface is formed outside the lower end of each elastic piece, and the opening of the printed circuit board has two elastic piece widths Lt; / RTI >

Another structure of the fastening structure includes a fastening piece formed on the bottom surface of the bracket; And a through hole formed in the printed circuit board, wherein the fastening piece comprises a first vertical piece, a horizontal piece extending horizontally at the end of the first vertical piece, and a second vertical piece extending vertically at the end of the horizontal piece, In the state where the vertical piece is inserted in the through hole formed in the printed circuit board, a part of the lower end portion is bent in a horizontal state to come into contact with the bottom surface of the printed circuit board.

In the steering angle sensor unit according to the present invention, the magnets fixed to the center of the first and second gears rotating in accordance with the rotation of the steering handle, that is, the rotational shafts of the first and second gears, The first and second rotary Hall ICs mounted on the first and second rotary Hall ICs can be accurately aligned and matched so that the function can be normally performed.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

5 is a plan view of a member constituting the steering angle sensor unit according to the first embodiment of the present invention. Here, the overall relationship of the members constituting the steering angle sensor unit according to the first embodiment is similar to that shown in Fig. 1, and is shown in a plan view in order to illustrate the relationship between the respective constituent members in Fig.

The steering angle sensor unit according to the first embodiment of the present invention which constitutes the torque angle sensor assembly includes a first casing 100, a second casing 200 and a second casing 200, which are disposed between the first casing 100 and the second casing 200 And a printed circuit board 300 disposed thereon.

In the first housing 100, a main gear 130 rotatable in accordance with the rotation of the position rotor is rotatably disposed in the center of the first housing 100. Two recesses (not shown) are formed in the inner surface of the inner casing of the first casing 100, that is, in the peripheral region of the main gear 130. The first and second gears 110 and 120, As shown in Fig.

Here, the first and second gears 110 and 120 are integrally formed in the gear portion and the gear portion, and comprise a disc portion having a smaller diameter than the gear portion (see FIG. 3). Only the disc portions of the gears 110 and 120 are located in the recesses of the first casing 110, and the gears are exposed to the outside.

The gear portion of the first gear 110 is engaged with the main gear 130 and the tooth portion of the second gear 120 is engaged with the gear portion of the first gear 110. Accordingly, the first and second gears 110 and 120 are rotated in opposite directions to each other by the rotation of the main gear 130. Magnets M11 and M12 are fixed to the center of the first and second gears 110 and 120, respectively.

A circular opening 301 corresponding to the main gear 130 mounted on the first casing 100 is formed in the central portion of the printed circuit board 300 and the first and second rotary hole ICs 310 And 320 (rotary hall IC) are fixed. On the other hand, a plurality of electronic circuit components (not specifically shown in the drawing) are arranged on the outer frame of the printed circuit board 300.

The second housing 200 is provided with means for fixing the first casing 100 or the printed circuit board 300 (for example, a fastening hole or the like).

The steering angle sensor unit according to the present invention includes alignment guide means for accurately aligning the printed circuit board 300 with respect to the first housing 100. [

The alignment guide means applied to the first embodiment includes two or more bosses 151 and 152 formed on the inner surface of the first casing 100 and two or more through holes 351 and 352 formed in the printed circuit board 300, to be.

As shown in FIG. 5, at least two of the first and second gears 110 and 120 having a predetermined height at a predetermined position on the inner surface of the first casing 100, preferably at a position adjacent to the two recesses on which the first and second gears 110 and 120 are mounted, Bosses 151 and 152 are formed.

In addition, bosses 151 and 152 formed on the inner surface of the first casing 100 and through holes 351 and 352 respectively corresponding to the bosses 151 and 152 are formed at predetermined positions of the printed circuit board 300.

5, the bosses 151 and 152 formed in the first housing 100 are shown in a circular shape, but they may have a vertical cylindrical shape, for example. In addition, if the condition that the bosses 151 and 152 and the through holes 351 and 352 correspond to each other is satisfied, the forming position is not limited.

The assembling process of the steering angle sensor unit according to the first embodiment and the effect obtained in the process will be described with reference to the drawings.

The main gear 130 is provided at the center of the inner surface of the first casing 100 and the first and second gears 110 and 120 are rotatably mounted in the two recesses formed in the outer periphery thereof through the rotating shaft.

The printed circuit board 300 on which the first and second rotary hole ICs 310 and 320 are mounted corresponds to the first casing 110 on which the first and second gears 110 and 120 are mounted. Two bosses 151 and 152 formed on the inner surface of the first casing 100 are inserted into the two through holes 351 and 352 formed in the printed circuit board 300 respectively in the initial stage of the coupling.

In this state, the movement of the printed circuit board 300 relative to the first casing 100 is guided by the bosses 151 and 152 of the first housing 100. The printed circuit board 300 corresponds exactly to the set position of the first housing 100 and consequently the first and second rotary hole ICs 310 and 320 of the printed circuit board 300 are connected to the first housing 100 100 and the magnets M11 and M12 fixed to the centers of the first and second gears 110 and 120, i.e., the first and second gears.

Then, the assembly of the steering angle sensor unit is completed by coupling the second casing 200 to the first casing 100.

The printed circuit board 300 is fastened to the first housing 100 at the correct position and the bosses 151 and 152 of the first housing 100 are inserted into the through holes 351 and 352 of the printed circuit board 300 The alignment state of the printed circuit board 300 with respect to the first casing 100 is not changed in the process of coupling the second casing 200 to the first casing 100. [ As a result, the precise correspondence state of the first and second rotary hole ICs 310 and 320 of the printed circuit board 300 and the magnets M11 and M12 of the first casing 100 can also be maintained.

6 is a plan view of a printed circuit board constituting a steering angle sensor unit according to a second embodiment of the present invention.

The steering angle sensor unit according to the second embodiment of the present invention constituting the torque angle sensor assembly also includes a first casing, a second casing, and a printed circuit board disposed between the first casing and the second casing.

6, only the printed circuit board 400 including the greatest features of the second embodiment is shown.

Although not shown in FIG. 6, a main gear rotatably disposed at the center of the first casing in accordance with the rotation of the position rotor (refer to FIG. 5), but includes first and second gears and recesses for mounting the main gear I never do that.

A circular opening corresponding to the main gear mounted on the first casing is formed in the central portion of the printed circuit board 400, and first and second rotary hole ICs 410 and 420 are fixed around the opening. In addition, a plurality of electronic circuit components (not specifically shown in the drawing) are disposed in the outer frame portion.

The printed circuit board 400 further includes a bracket 500 positioned above the first gear and the two rotary hole ICs 410 and 420 while being fixed to the printed circuit board. The bracket 500 maintains a predetermined gap from the surfaces of the first and second rotary Hall ICs 410 and 420.

6, which is a plan view of the printed circuit board 400, shows the main gear 130 mounted on the first casing and the first and second rotary Hall ICs 410 and 420 ) Are shown by dotted lines.

FIG. 7 is a bottom perspective view of the bracket shown in FIG. 6, in which the first and second recessed portions 511 and 521 having predetermined diameters and depths are formed on the bottom surface of the bracket 500 and the recessed portions 511 and 521 The center corresponds to the first gear and two rotary hole ICs 410 and 420 mounted on the printed circuit board 400.

Meanwhile, the first and second gears 510 and 520 are rotatably mounted in the recesses 511 and 521 of the bracket 500 through a rotation shaft. Here, as shown in Fig. 3, the first and second gears 510 and 520 are integrally formed with the gear portion and the gear portion, and comprise a disc portion having a diameter smaller than that of the gear portion. Only the disc portions of the gears 510 and 520 are located in the concave portions 511 and 521 of the bracket 500, respectively, and the gear portion is exposed to the outside.

6 and 7, the first recessed portion 511 on which the first gear 510 is mounted is disposed inside the second recessed portion 521 on which the second gear 520 is mounted, that is, A portion of the outer frame portion of the gear portion of the first gear 510, that is, the outer frame portion corresponding to the central portion of the printed circuit board 400 is exposed to the outside of the bracket 500, Is engaged with the main gear 130 mounted on the first housing.

The second gear 520 is engaged with the first gear 510 in the lower portion of the bracket 500 so that the first and second gears 510 and 520 are opposed to each other as the main gear 130 rotates. Direction.

A magnet (not shown) is fixed to the center of the first and second gears 510 and 520 mounted on the bottom surface of the bracket 500. Thus, And the second rotary Hall ICs 410 and 420. [

Fig. 8 is a detailed view of the portion "A" in Fig. 6, showing a part of the fastening structure formed at one end of the bracket 500 and the printed circuit board 400. Fig. Here, it is preferable that two or more fastening structures shown in Fig. 8 are formed on the bracket 500 and the printed circuit board 400, and its position is not limited.

8A, two elastic pieces 610 and 620 vertically extending downward are formed at the outer ends of the brackets 500 at predetermined intervals.

A shoulder portion formed by the lower inclined surfaces 611 and 621 and the upper horizontal surfaces 612 and 622 is formed outside the lower ends of the respective elastic pieces 610 and 620. A through hole 401 having a diameter equal to the width of the two elastic pieces 610 and 620 is formed on the printed circuit board 400 corresponding to the elastic pieces 610 and 620.

In the fastening structure having such a structure, when the bracket 500 (first and second gears 510 and 520 are mounted on the recess in the bottom surface) is fastened to the printed circuit board 400, 621 are in contact with the inner circumferential surface of the through hole 501 of the printed circuit board 500 so that the two elastic pieces 610 and 620 are bent toward the inside of the printed circuit board 500 while the elastic pieces 610 and 620 are bent inward. The through hole 501 is formed.

The elastic pieces 610 and 620 are restored to the original shape by the elastic force after the jaw portions of the elastic pieces 610 and 620 completely pass through the through hole 401 of the printed circuit board 400. [ The upper horizontal surfaces 612 and 622 of the elastic pieces 610 and 620 are brought into contact with the bottom surface around the through hole 401 of the printed circuit board 400 so that the elastic pieces 610 and 620 are electrically connected to the printed circuit board 400 The through hole 401 is formed in the through-hole 401. As shown in Fig.

A vertical stopper 501 having a predetermined height is formed at a predetermined position on the bottom surface of the bracket 500, that is, at a position adjacent to the elastic pieces 610 and 620. Thus, the elastic pieces 610 and 620 are mounted on the printed circuit board 400 are not completely inserted into the through-holes 401 of the first through fourth holes 400a, 400b. As a result, the bracket 500 coupled with the printed circuit board 400 maintains a predetermined gap with the printed circuit board 400.

The fastening structure shown in FIG. 8B includes a fastening piece 700 formed on the bottom end surface of the bracket 500 and a through hole 401 formed in the printed circuit board 400.

The fastening piece 700 of the bracket 500 includes a first vertical piece 710 extending from the bracket 500, a horizontal piece 720 extending horizontally from the end of the first vertical piece 710, a horizontal piece 720 And a second vertical piece 730 extending vertically at the end of the second vertical piece 730.

The second vertical piece 730 of the bracket 500 is inserted into the through hole 401 formed in the printed circuit board 400 and part of the second vertical piece 730 is horizontally And is brought into contact with the bottom surface of the printed circuit board 400.

The bottom surface of the horizontal piece 410 and the bottom surface of the printed circuit board 400 in the vicinity of the through hole 401 of the printed circuit board 400 around the through hole 401 are connected to the second vertical piece 730 The fastening piece 700 is firmly inserted in the through hole 401 of the printed circuit board 400. The fastening piece 700 is formed of a metal such as copper,

Meanwhile, a gap corresponding to the height of the first vertical piece 710 is maintained between the bottom surface of the bracket 500 and the surface of the printed circuit board 400.

8 (c) includes a fastening piece 800 formed on the bottom surface of the bracket 500 and a through hole 401 formed in the printed circuit board 400.

The fastening piece 800 of the bracket 500 includes a first vertical piece 810 extending from the bracket 500, a horizontal piece 820 extending horizontally from the end of the first vertical piece 810, a horizontal piece 820 And a second vertical piece 830 extending vertically from the end of the second vertical piece 830.

The second vertical piece 830 of the bracket 500 is inserted into the through hole 401 formed in the printed circuit board 400 and the lower end of the second vertical piece 830 is pressed (Press-fitted) around the through-hole 401 of the printed circuit board 400.

The bottom surface of the horizontal piece 820 and the lower surface of the periphery of the through hole 401 of the printed circuit board 400 are formed in the vicinity of the through hole 401 of the printed circuit board 400 by the second vertical piece 830 The fastening piece 800 is firmly inserted into the through hole 401 of the printed circuit board 400. The fastening piece 800 is inserted into the through hole 401 of the printed circuit board 400,

When the bracket 500 and the printed circuit board 400 are fastened by the fastener 800 having such a structure, the first vertical piece 810 are maintained.

In the steering angle sensor unit according to the second embodiment, the bracket 500 to which the first and second gears 510 and 520 are mounted is mounted on the printed circuit board 400 in a fixed state. Even in the process of combining the first casing 100 and the printed circuit board 400 and the process of combining the second casing 200 and the first casing 100 Is not changed.

As a result, the magnets M11 and M12 mounted on the bracket 500, that is, the magnets M11 and M12 fixed to the first and second gears 510 and 520, and the first and second rotary hole ICs 310 and 310 of the printed circuit board 300 And 320 can also be maintained.

The foregoing description of the preferred embodiments of the present invention has been presented for purposes of illustration and various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention, And additions should be regarded as falling within the scope of the following claims.

1 is an exploded perspective view of a steering angle sensor unit constituting a general torque angle sensor assembly;

2 is a plan view of each member shown in Fig.

3 is a perspective view showing the relationship between the first and second gears mounted on the upper casing shown in FIG. 2 and the first and second rotary hole ICs mounted on the printed circuit board.

4 is a view showing the relationship between magnets fixed to the ends of rotary shafts of first and second gears and first and second rotary holes IC.

5 is a plan view of a member constituting the steering angle sensor unit according to the first embodiment of the present invention;

6 is a plan view of a printed circuit board constituting a steering angle sensor unit according to a second embodiment of the present invention;

7 is a bottom perspective view of the bracket shown in Fig.

Fig. 8 is a detailed view of the "A" portion of Fig. 6, partially showing the bracket and various fastening structures formed on the printed circuit board.

Claims (10)

In the steering angle sensor unit constituting the torque angle sensor assembly, A first casing including a main gear rotatably mounted at a central portion thereof, a first rotatable gear engaged with the main gear, and a second rotatable gear engaged with the first gear; A second casing coupled to the first casing; And And a printed circuit board disposed between the first casing and the second casing in a state fixed to the second casing and having two angle sensing means mounted thereon, At the end of the rotation axis of the first gear and the second gear, two angle sensing means and respective corresponding magnets are fixed, Alignment guide means for accurately aligning the magnets of the first casing and the angle detecting means of the printed circuit board on the inner surface of the first casing and the surface of the printed circuit board respectively when the two members are coupled; Wherein the alignment guide means comprises: At least two bosses formed on the inner surface of the first casing and extending vertically with a predetermined length; And Wherein the at least two through holes are formed on the printed circuit board and correspond to the bosses of the first housing, respectively. delete The steering angle sensor unit according to claim 1, wherein the first casing includes two recesses formed to respectively receive the first and second gears, and the two bosses are formed at positions adjacent to the two recesses . In the steering angle sensor unit constituting the torque angle sensor assembly, A first casing including a main gear rotatably mounted at a central portion thereof; A printed circuit board coupled to the first housing and having two angle sensing means mounted thereon; A bracket that is rotatably mounted on a surface of a first gear engaged with the main gear and a second gear meshed with the first gear and is coupled to the printed circuit board at a predetermined interval through a plurality of fastening structures; And a second casing coupled to the first casing with the bracket and the printed circuit board interposed therebetween; Wherein two angle sensing means and corresponding magnets are fixed to the ends of the rotary shafts of the first gear and the second gear, respectively. 5. The method of claim 4, The first gear and the second gear are composed of a disc portion integrally formed with the gear portion and the gear portion, Wherein the bracket has two recesses for respectively receiving the disk portions of the first gear and the second gear. 6. The method of claim 5, Wherein the recessed portion in which the first gear is accommodated is formed inside the recessed portion in which the second gear is housed, so that the first gear is meshed with the main gear in a state in which the first gear is exposed to the outside of the bracket. The connector according to claim 4, wherein each fastening structure for fastening the bracket to the printed circuit board comprises: Two elastic pieces extending from the outer end of the bracket at a predetermined interval; And And a through hole formed in the printed circuit board corresponding to the elastic piece of the bracket, A shoulder portion formed of a lower inclined surface and an upper horizontal surface is formed outside the lower end of each elastic piece, and the opening of the printed circuit board has the same diameter as the two elastic piece widths. 8. The method of claim 7, Wherein the bracket includes a vertical stopper at a predetermined height formed on an outer side of the elastic piece so that the elastic piece is not completely inserted into the through hole of the printed circuit board and the printed circuit board and the bracket maintain a predetermined gap. The connector according to claim 4, wherein each fastening structure for fastening the bracket to the printed circuit board comprises: A fastening piece formed on the bottom surface of the bracket; And And a through hole formed in the printed circuit board, The fastening piece comprises a first vertical piece, a horizontal piece extending horizontally at the end of the first vertical piece, and a second vertical piece extending vertically at the end of the horizontal piece, And the second vertical piece is inserted into the through hole formed in the printed circuit board, and a part of the lower end of the second vertical piece is bent in a horizontal state to contact the bottom surface of the printed circuit board. The steering apparatus according to claim 9, wherein the second vertical piece of the fastening piece is inserted into the through hole formed in the printed circuit board, and then a part of the end portion thereof is pressed and extended (pressed) around the through hole of the printed circuit board. Unit.

Images