JPH1183415A - Stroke detecting device for steering gear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive stroke detecting device for steering gear in which occurrence of an error is suppressed and its mounting work is easy. SOLUTION: The first bracket 3 is attached to a rack shaft 2 to transmit a steering power by movement in the axial direction, the second bracket 5 is attached to a cylinder 4 of a power steering gear (P S) which is engaged with the rack shaft 2 and is supported on a vehicle side and a rotating position detecting sensor 6 equipped with a rotating arm 9 for detection on one side of the first bracket 3 and the second bracket 5 is provided. In addition, means for engagement 9 A, P, which are engaged with the rotating arm 9 in the direction of the arm length slidably and also in the axial direction of the rack shaft 2 between the another side and the rotating position detecting sensor 6, are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stroke detecting device for a steering device of an automobile.

[0002]

2. Description of the Related Art Conventionally, as a stroke detecting device of a steering device, a technology disclosed in Japanese Patent Application Laid-Open No. 5-147540, which detects a displacement of a rack shaft in an axial direction using a rotary sensor, or a linear sensor has been used. A technique according to Japanese Unexamined Utility Model Publication No. 4-119273 for detecting the axial displacement of a rack shaft using the same is known.

[0003]

However, in the conventional rotary sensor, it is necessary to form teeth for the displacement detection sensor on the rack shaft, and the displacement detection sensor is incorporated in a cylinder to which the rack shaft is fitted. Had to make a hole for it. For this reason, there has been a problem that the mounting process of the displacement detection sensor increases the cost. Also,
In the case of the linear type sensor, the influence of the rattling of the rack and pinion of the steering gear is input to the sensor, so that an error occurs in the detection value of the sensor. Furthermore, there is a possibility that mechanical noise due to the engagement play may occur at a portion where the sensor side and the rack shaft are in contact with each other.

An object of the present invention is to provide a stroke detecting device for a steering device which can suppress the occurrence of an error, is easy to attach, and is low in cost.

[0005]

According to a first aspect of the present invention, a first bracket is attached to a rack shaft for transmitting a steering force by axial movement, and the rack shaft is fitted and the power supported on the vehicle body side. A second bracket is attached to a cylinder of the steering device, and a rotation type position detection sensor having a rotation arm for detection is provided on one side of the first bracket and the second bracket, and the other side and the rotation type position are provided. An engagement means for slidably engaging the rotary arm in the arm length direction and engaging with the rack shaft axial direction is provided between the detection sensor and the detection sensor.

Therefore, when the rack shaft moves in the axial direction for transmitting the steering force, the first and second brackets move linearly relative to each other, and the relative movement causes the rotation of the rotary position detecting sensor via the engaging means. The arm rotates, and the movement of the rack shaft with respect to the cylinder can be detected as a rotation position.

According to a second aspect of the present invention, there is provided the stroke detecting device for a steering device according to the first aspect, wherein the engaging means is provided separately on the rotating arm and the other side of the first and second brackets. A sliding pin and a sliding elongated hole into which the sliding pin is inserted and slides.

Therefore, in addition to the operation of the first aspect of the present invention, the sliding pin of the engaging means slides relatively to the sliding long hole by the linear relative movement of the first and second brackets. The rotation arm of the rotation type position detection sensor can be rotated.

According to a third aspect of the present invention, there is provided the stroke detecting device for a steering device according to the first aspect, wherein the engaging means is provided on one of the first and second brackets and the rack is mounted on the rotating arm. It is characterized by comprising an engaging portion facing the shaft axis direction, and an urging member for urging the rotating arm in a direction of contact with the engaging portion.

Therefore, in addition to the operation of the first aspect of the present invention, the rotary arm is rotated by the engaging portion against the urging of the urging member due to the relative linear movement of the first and second brackets, or It can rotate in the opposite direction by the urging force of the urging member.

According to a fourth aspect of the present invention, there is provided a stroke detecting device for a steering device according to the second or third aspect,
The first bracket is fastened and fixed to an end of the rack shaft by an inner socket screwed to an end of the rack shaft and connecting a tie rod.

Therefore, in addition to the operation of the invention of claim 2 or 3, the first bracket can be clamped and fixed between the tie rod and the end of the rack shaft.

According to a fifth aspect of the present invention, there is provided the stroke detecting device for a steering device according to the fourth aspect, wherein the first bracket is provided with a locking portion of an elastic boot for covering between the cylinder end and the rack shaft. It is characterized by having been provided.

Therefore, in addition to the function of the invention of claim 4, one end of the elastic boot covering the space between the cylinder and the rack shaft can be locked to the locking portion of the first bracket.

According to a sixth aspect of the present invention, there is provided a power steering apparatus comprising: a rack shaft for transmitting a steering force by an axial movement; and a rack of a power steering device fitted with the rack shaft and supported on a vehicle body. A gear that rotates according to the axial movement of the rack shaft with respect to the cylinder, and a rotation type position detection sensor that detects a linear movement according to the rotation of the gear with the rotation arm, or directly detects the rotation angle of the gear. Are provided integrally.

Therefore, the linear movement corresponding to the rotation of the gear rotating in accordance with the relative position of the rack shaft with respect to the cylinder in the axial direction is detected by the rotating arm of the rotary position detecting sensor, or the rotation angle of the gear is determined by the rotary position. It can be detected directly by the detection sensor. In addition, since the gear and the rotary position detection sensor are provided integrally, it can be handled as a unit.

According to a seventh aspect of the present invention, there is provided a stroke detecting device for a steering device according to the sixth aspect, wherein the gear and the rotary position detecting sensor are mounted on an integral case, and the gear rotates on the case. The rotation arm of the rotation position detection sensor is slidably engaged with the rotation axis of the gear in the arm length direction in the direction of linear movement of the gear, and is engaged with the case and the gear. A pair of linear teeth that mesh with each other, one of the linear teeth is fixed to a case, and the other is supported so as to be linearly movable relative to the case; The case is engaged with a shaft, and the case is fixed to the cylinder via a second bracket.

Therefore, in addition to the operation of the invention of claim 6, when the rack shaft moves in the axial direction with respect to the cylinder, the first
The other linear tooth body that moves together with the rack shaft via the bracket moves linearly relative to the case, and rotates a gear that meshes with both the linear tooth body and the one linear tooth body fixed to the case. It can be moved linearly with respect to the case. The rotation arm of the rotation position detection sensor that engages with the rotation shaft of the gear rotates by the linear movement of the gear, and the movement of the rack shaft can be detected as a rotation position by the rotation type position detection sensor.

According to an eighth aspect of the present invention, in the stroke detecting device for a steering device according to the seventh aspect, the first bracket is composed of two members, one of which is screwed to a rack shaft or an end of the rack shaft. The tie rod is fixed to the inner socket side to be connected, and the other is fixed to the movable linear tooth body.

Therefore, in addition to the function of the invention of claim 7, it is possible to easily engage the unit having the rotary position detection sensor integrally with the case on the rack shaft side by the first bracket composed of two members. it can.

[0021]

According to the first aspect of the present invention, it is not necessary to form a tooth portion for detecting a stroke on a rack shaft or a hole for mounting a sensor on a cylinder, so that a low-cost and high-precision stroke detecting device can be obtained. it can. In addition, since the rotation type position detection sensor is used, even if the rack and pinion, which is the steering gear, meshes with the backlash, the influence is not input to the sensor, and highly accurate detection can be performed.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, the axial movement of the rack shaft by the sliding pin and the elongated slide hole is surely performed as the rotation of the rotary arm of the rotary type position detection sensor. Can be detected.

According to a third aspect of the present invention, in addition to the effect of the first aspect of the present invention, the axial movement of the rack shaft is controlled by the engaging means of the engaging portion and the urging member. Can be reliably detected.

According to the fourth aspect of the invention, in addition to the effects of the second or third aspect, the first bracket can be fixed without using a special member, and the structure is extremely simplified. Can be.

According to the fifth aspect of the present invention, in addition to the effect of the fourth aspect of the present invention, the elastic boot can be locked using the first bracket, and the structure can be simplified.

According to the sixth aspect of the present invention, the gear rotating in accordance with the axial movement of the rack shaft and the rotary position detection sensor can be integrally provided and handled as a unit, and the structure is simple. Very easy to attach and handle.

According to a seventh aspect of the present invention, in addition to the effect of the sixth aspect, the gear of the rack shaft, which rotates in accordance with the axial movement of the rack shaft, and the rotation type position detection sensor are unitized by a case, and the shaft of the rack shaft is formed. Direction movement can be reliably detected.

According to an eighth aspect of the present invention, in addition to the effect of the seventh aspect of the present invention, the unit and the rack are formed while the rotary type position detection sensor and the gear rotating in accordance with the axial movement of the rack shaft are formed as a unit. Engagement with the shaft side can be performed very easily.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a stroke detecting device for a steering device according to the present invention will be described.

(First Embodiment) FIGS. 1 and 2 show a stroke detecting device of a steering device according to a first embodiment of the present invention. 1A is an enlarged perspective view of the stroke detection device 1 as viewed from the rear side of the vehicle, FIG. 1B is a plan view of a rotary arm, and FIG. FIG.

As shown in FIGS. 1 and 2, the stroke detecting device 1 includes a first bracket 3 provided at one end of a rack shaft 2 and a cylinder 4 to which the rack shaft 2 is fitted.
And a rotary type position detecting sensor 6 having a sensor body 6A fixed to the first bracket 3. 2 shows the steering gear SG, the front suspension member FSM, the stabilizer ST, and the shock absorber S at the same time.
A and the like are shown.

The cylinder 4 is for a power steering device PS, and the stroke detecting device 1 is provided on a side of the power steering device PS remote from the control valve CV. Therefore, the stroke detecting device 1 can be mounted with a sufficient space. However, the stroke detection device 1 can be provided on the control valve CV side.

The first bracket 3 has a substantially L-shape when viewed from the front-rear direction, and is sandwiched between the end face of the rack shaft 2 and the end face of the inner socket 7 screwed into the screw hole of this end face. It is fastened and fixed. The ball portion of the tie rod 8 is connected to the inner socket 7.

The second bracket 5 has a proximal end 5A fixed to the cylinder 4 by welding or the like, and a distal end 5B formed to be bent along the axial direction of the rack shaft 2. The second bracket 5 has a sliding pin P protruding therefrom.

The rotary type position detecting sensor 6 has a sensor main body 6 A fastened and fixed on the first bracket 3. A rotation detection shaft 6B protrudes from a sensor body 6A of the rotation type position detection sensor 6. This rotation detection shaft 6B
, One end of the rotating arm 9 is supported and fixed. This fixing is performed, for example, by providing a semicircular fixing hole 9B at one end of the rotating arm 9 and press-fitting the fixing hole 9B into a rotation detecting shaft 6B having the same cross section as shown in FIG. Have been.

As shown in FIG. 1, a sliding long hole 9A is formed at the other end of the rotating arm 9 at a predetermined length along the arm length direction. The sliding long hole 9A is fitted to the sliding pin P.

Then, the sliding pin P and the slot 9 for sliding are used.
A constitutes an engaging means, and the rotating arm 9 is slidable in the arm length direction and engages in the rack shaft biaxial direction.

Next, the detection operation will be described. When a steering wheel (not shown) is steered, a steering gear S
The rack shaft 2 moves axially in the steering direction with respect to the cylinder 4 via G. At the time of the axial movement, oil is supplied to and discharged from a hydraulic chamber in the cylinder 4 by the operation of the control valve CV, and power assist for steering is performed.

The wheels are steered via the tie rods 8 as the rack shaft 2 moves in the axial direction. At this time, the first bracket 3 also moves in the same direction as the rack shaft 2 moves in the axial direction, and linearly moves relative to the second bracket 5. Due to this relative movement, the rotating arm 9 is engaged with the sliding pin P by the sliding elongated hole 9A in the direction of the relative linear movement of the brackets 3 and 5 while sliding in the arm length direction. The arm 9 rotates with the axial movement of the rack shaft 2. Due to this rotation, the rotation detection shaft 6B rotates, and the amount of movement of the rack shaft 2 can be detected by detecting the amount of rotation by the sensor body 6A.

As described above, the rotating arm 9 can be rotated without difficulty by the relationship between the sliding pin P and the elongated sliding hole 9A, and the rotation can be reliably detected by the rotary position detecting sensor 6. And the steering gear S
The steering stroke can be reliably detected without being affected by the rattling of the G rack and pinion. Further, there is no need to provide the rack shaft 2 with a detection tooth portion or the cylinder 4 with a detection hole, so that the inexpensive stroke detection device 1 can be obtained with a simple structure.

(Second Embodiment) FIGS. 3 and 4 relate to a second embodiment, FIG. 3 is a perspective view of a main part corresponding to FIG. 1A, and FIG. 4 is a perspective view of a first bracket. The components corresponding to those of the first embodiment are denoted by the same reference numerals, and the description thereof will not be repeated.

In this embodiment, the components substantially correspond to those in the first embodiment. On the other hand, in the present embodiment, the rotary position detection sensor 6 is provided on the second bracket 5 side, and the sliding pin P is provided to protrude on the first bracket 3 side. Second
The bracket 5 is provided in an L shape when viewed from a plane,
The rotary type position detection sensor 6 is fastened and fixed to the distal end 5B of the second bracket 5.

The first bracket 3 is smaller than that of the first embodiment. As shown in FIGS. 3 and 4, a U-shaped notch is formed at the lower end so as to straddle the screw portion of the inner socket 7. 3B is provided. The first bracket 3 is fastened and fixed between the inner socket 7 and the rack shaft 2 by fastening the inner socket 7 to the end face of the rack shaft 2.

In this embodiment, the rack shaft 2
The sliding pin P moves in the same direction as the rack shaft 2 via the first bracket 3 due to the axial movement of the arm, and the rotary arm 9 rotates via the sliding long hole 9A. Therefore, by detecting this rotation by the sensor body 6A, the steering stroke can be accurately detected as in the first embodiment, and substantially the same operation and effect as in the first embodiment can be achieved. Further, in the present embodiment, the first bracket 3 can be attached by being inserted from above so as to straddle the screw portion of the inner socket 7, so that the attachment can be easily performed, and the assembling is further simplified. is there.

(Third Embodiment) FIGS. 5 and 6 show a third embodiment. FIG. 5 is a sectional view of a main part, and FIG. 6 is a perspective view of a first bracket. The components corresponding to those of the first and second embodiments are denoted by the same reference numerals, and the description thereof will not be repeated.

The basic structure of this embodiment is substantially the same as that of the second embodiment. On the other hand, in the present embodiment, the first bracket 3 is provided with a locking portion 3C for locking one end of the elastic boot 10. Therefore, the first bracket 3 is provided with a mounting hole 3D through which the screw portion 7A of the inner socket 7 penetrates, not a U-shaped notch. The other end of the elastic boot 10 is fixed on the cylinder 4 by a boot clamp BC. Reference numeral 7B denotes an elastic boot that covers a space between the inner socket 7 and the pilot 8, and is similarly fixed by a boot clamp BC.

Therefore, in the present embodiment, substantially the same operation and effects as those of the second embodiment can be obtained. Further, the attachment of the elastic boot 10 can be extremely easily performed by the locking portion 3C of the first bracket 3.

(Fourth Embodiment) FIGS. 7 and 8 relate to a fourth embodiment of the present invention. FIG. 7 is an enlarged perspective view of a main part corresponding to FIG. 1, and FIG. 8 is a cross-sectional view around the rotation detection shaft 6B. It is. In the present embodiment, components corresponding to those of the first and second embodiments will be denoted by the same reference numerals, and redundant description will be omitted.

This embodiment has basically the same configuration as the second embodiment. On the other hand, in the present embodiment, the rotating arm 9
Has a rod shape, and the tip end side of the rotating arm 9 contacts one side surface 3E of the first bracket 3. That is, the first bracket 3 constitutes an engaging portion that faces the rotary arm 9 in the rack shaft biaxial direction. A shaft cover 6C is provided around the rotation detection shaft 6B to which the rotation arm 9 is connected, and between a spring support piece 6D protruding from the rotation detection shaft 6B and a spring receiving piece 6E protruding from the inner surface of the shaft cover 6C. , A helical spring 11 is interposed. The helical spring 11 urges the rotating arm 9 in the direction of contact with the first bracket 3 and constitutes an urging member.

In this embodiment, when the rack shaft 2 moves in the axial direction toward the cylinder 4, the rotating arm 9 is rotated via the first bracket 3, and the rack shaft 2 moves in the axial direction away from the cylinder 4. Sometimes, the rotation arm 9 rotates while being in contact with the first bracket 3 by the bias of the helical spring 11.

Accordingly, also in this case, the steering stroke can be reliably detected by the rotary position detection sensor 6, and substantially the same operation and effect as in the second embodiment can be obtained. Further, in the present embodiment, since the structure is such that the rotating arm 9 is only brought into contact with the first bracket 3, an effect that the structure is extremely simple is obtained.

(Fifth Embodiment) FIGS. 9 to 11 show a fifth embodiment. 9 is an enlarged exploded perspective view of a main part, FIG. 10 is a front view of an attached state of a first bracket, and FIG. 11 shows a modification. The components corresponding to those in the first embodiment and the like are denoted by the same reference numerals, and the description thereof will not be repeated.

In this embodiment, the stroke detecting device 1 is a unit. That is, in the present embodiment, the gear 15 and the rotary position detection sensor 6 are provided integrally with the case 17. Specifically, the gear 15 is rotatably supported in a rectangular box-shaped case 17 and the gear 1
5 is a guide hole 1 whose upper and lower shafts 15A are
7A (however, only the upper guide hole 17A is shown in the figure) so as to be able to move linearly. A pair of straight teeth 13 and 14 mesh with the gear 17, and the straight teeth 13 are supported so as to move linearly with respect to the case 17.
The straight teeth 14 are fixed to the case 17. The rotation type position detection sensor 6 is provided in a case 17, and the rotation arm 9 is connected to the rotation shaft 15 of the gear 15 through the sliding slot 9 </ b> A.
A is engaged. Therefore, the sliding long hole 9A and the rotating shaft 15A constitute the engaging means in the present embodiment.

On the other hand, the first bracket 3 is composed of two members 12A and 12B, one of which is shown in FIGS.
As shown in (a), the other member 12B is fixed to the inner socket 13 by welding or the like. A gap S is formed between the distal end side of one member 12A and the inner socket 7, and a U-shaped portion 12Ba that straddles the outer periphery of the rack shaft 2 is provided in the other member 12B. This U-shaped part 12B
a is arranged so as to straddle the rack shaft 2, and both lower ends 12Bb enter the gap S on the one member 12A side and are engaged therewith. Therefore, the straight teeth 13 are configured to be engaged with the rack shaft 2 via the first bracket 3.

On the other hand, the second bracket 5 also has two members 21A, 2A.
1B, one member 21A is fixed to the case 17, the other member 21B is fixed to the cylinder 4,
Both members 21A, 21B are fastened and fixed by screws 16.

In this embodiment, when the rack shaft 2 moves in the axial direction, the linear teeth 13 linearly move in the same direction via the first bracket 3, and the gear 15 rotates. Since the gear 15 also meshes with the linear teeth 14 fixed to the case 17, the gear 15 rolls along the linear teeth 14. By this rolling, the rotating shaft 15A moves linearly along the guide hole 17A, and the sliding long hole portion 9 is formed.
The rotation arm 9 rotates via A. Therefore, also in the present embodiment, the axial movement of the rack shaft 2 can be detected by the rotary position detection sensor 6, and the steering stroke can be reliably detected.
For this reason, also in the present embodiment, substantially the same operation and effect as those of the first embodiment and the like can be obtained.

On the other hand, in the present embodiment, since the gear 15 and the rotary type position detecting sensor 6 are formed as a unit using the case 17, the handling of the stroke detecting device 1A can be performed as a unit, and the handling becomes extremely easy. . Moreover, the positional accuracy between the rotary position detection sensor 6 and the gear 15 can be set as a unit, and accurate assembly accuracy can be achieved.

The first bracket 3 is formed as shown in FIG.
It is also possible to configure as shown in FIG. That is, FIG.
At 0 (b), one member 12A of the first bracket 3 is fastened and fixed between the end of the rack shaft 2 and the inner socket 7, and the engaging piece 22 is fixed to the tip side of the one member 12A by welding or the like. By doing so, a gap S is formed. The other member 12 </ b> B is engaged with the gap S to transmit the axial movement of the rack shaft 2 to the linear tooth body 13 via the first bracket 3.

FIG. 10C shows one member 12A and the other member 12B of the first bracket 3 fastened and fixed by bolts and nuts 19. Therefore, also in this example, the axial movement of the rack shaft 2 can be transmitted to the linear teeth 13 via the first bracket 3.

FIG. 11 is a perspective view of an essential part showing a modification of the fifth embodiment of FIG. 9, and has a structure in which the rotation angle of the gear 15 is directly detected by the rotation type position detection sensor 6.

First, in FIG. 11A, a rotating shaft 15A of the gear 15 is rotatably supported with respect to a case (not shown) so that it does not move linearly. One linear tooth body 13 meshes with the gear 15 so that the linear tooth body 13 can move linearly with respect to a case (not shown). Further, a rotary position detection sensor 6 is fastened and fixed to the case, and the rotary shaft 15A is coaxially connected to the rotation detection shaft.

Therefore, when a rack shaft (not shown) moves in the axial direction, the linear tooth body 13 moves in the same direction via the first bracket, and the gear 15 meshing with this moves.
The rotation of the gear 15 causes the rotation shaft 15A to rotate integrally, and the rotation angle can be directly detected by the rotation type position detection sensor 6. Therefore, also in this modified example, the steering stroke can be accurately detected.

In the example of FIG. 11B, in addition to the gear 15, reduction gears 15B and 20 are added. The rotation detection axis of the rotation type position detection sensor 6 is the rotation axis 20 of the reduction gear 20.
A is coaxially connected. In this example, the gear 15 is rotated by the linear movement of the linear tooth body 13, and the reduced rotation is transmitted to the rotating shaft 20A via the reduction gears 15B and 20. Therefore, the rotation type position detection sensor 6 can accurately detect the steering stroke by detecting the decelerated rotation of the rotation shaft 20A. In addition, since the rotation is detected after being decelerated, the rotation type position detection sensor 6 can be downsized.

[Brief description of the drawings]

FIG. 1A is a perspective view of a main part of a stroke detection device of a steering device according to a first embodiment of the present invention, and FIG. 1B is a plan view of a rotary arm.

FIG. 2 is an overall perspective view to which the first embodiment of the present invention is applied.

FIG. 3 is a perspective view according to a second embodiment of the present invention.

FIG. 4 is a perspective view of a first bracket according to a second embodiment.

FIG. 5 is a front view of a partially cutaway main part according to a third embodiment of the present invention.

FIG. 6 is a perspective view of a first bracket according to a third embodiment.

FIG. 7 is a perspective view of a main part according to a fourth embodiment of the present invention.

FIG. 8 is a cross-sectional view around a rotation detection axis of a rotary position detection sensor according to a fourth embodiment.

FIG. 9 is an exploded perspective view of a main part according to a fifth embodiment of the present invention.

FIG. 10A is a front view of a support structure of a first bracket according to a fifth embodiment. (B) is a front view which shows the modification of a 1st bracket. (C) is a front view showing another modification of the first bracket.

FIG. 11A is a perspective view showing a modification of the main part of the fifth embodiment. (B) is a perspective view showing another modification.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stroke detecting device 2 Rack shaft 3 First bracket (engaging part, engaging means) 4 Cylinder 5 Second bracket 6 Rotary type position detecting sensor 6A Sensor main body 6B Rotation detecting shaft 9 Rotating arm 9A Sliding slot ( P means sliding pin (engaging means) 11 helical spring (biasing member, engaging means) PS power steering device

Claims (8)

[Claims] 1. A first bracket is attached to a rack shaft that transmits a steering force by axial movement, and a second bracket is attached to a cylinder of a power steering device that is fitted with the rack shaft and that is supported on a vehicle body side. A rotation type position detection sensor having a rotation arm for detection provided on one side of the first bracket and the second bracket, and the rotation arm provided between the other side and the rotation type position detection sensor; A stroke detecting device for a steering device, further comprising an engaging means for slidably engaging in a longitudinal direction and engaging in an axial direction of the rack shaft. 2. The stroke detecting device for a steering device according to claim 1, wherein said engaging means includes sliding pins provided separately on said rotary arm and on the other side of said first and second brackets, respectively. A stroke detecting device for a steering device, characterized in that the sliding pin is a sliding long hole portion that slides when inserted. 3. The stroke detecting device for a steering device according to claim 1, wherein the engaging means is provided on one of the first and second brackets and faces the rotating arm in the rack shaft axial direction. And an urging member for urging the rotary arm in a direction of contact with the engaging portion. 4. The stroke detection device for a steering device according to claim 2, wherein the first bracket is connected to an end of the rack shaft by an inner socket that is coupled with a tie rod. A stroke detection device for a steering device, wherein the stroke detection device is fastened and fixed between the shaft end portion. 5. The stroke detecting device for a steering device according to claim 4, wherein the first bracket is provided with a locking portion of an elastic boot that covers a space between the cylinder end and a rack shaft. A stroke detection device for a steering device. 6. A rack shaft that transmits a steering force by axial movement and is attached to at least one of a cylinder of a power steering device fitted with the rack shaft and supported on the vehicle body side, and the rack shaft is mounted on the cylinder. A gear that rotates in accordance with the axial movement, and a linear arm that detects linear movement in accordance with the rotation of the gear,
Alternatively, a stroke detection device for a steering device, wherein a rotation type position detection sensor for directly detecting a rotation angle of the gear is integrally provided. 7. The stroke detection device for a steering device according to claim 6, wherein the gear and the rotary position detection sensor are mounted on an integral case, and the gear is linearly movable while rotating on the case. And a rotating arm of the rotational position detecting sensor is slidably engaged with the rotating shaft of the gear in the arm length direction in a linear moving direction of the gear, and a pair of straight lines meshing with the gear in the case. A tooth body is provided, one of the straight tooth bodies is fixed to a case, and the other is supported so as to be able to move linearly relative to the case, and the other straight tooth body is engaged with the rack shaft via a first bracket. A stroke detection device for a steering device, wherein the case is fixed to the cylinder via a second bracket. 8. The stroke detecting device for a steering device according to claim 7, wherein the first bracket is formed of two members, and one of the first brackets is screwed to a rack shaft or an end of the rack shaft to connect a tie rod. A stroke detection device for a steering device, wherein the stroke detection device is fixed to a socket side and the other is fixed to the movable linear tooth body.