JP6864755B2 - Rotation angle sensor mounting structure and mounting method - Google Patents

Description

The present invention relates to a mounting structure and mounting method of a rotation angle sensor.

The rotation angle sensor is a sensor that detects the rotation angle by non-contactly detecting the movement of a convex portion that rotates integrally with the rotation of the rotating body, and is generally known as a pickup sensor.
The rotation detection element existing in the sensing unit of the rotation angle sensor has detection directivity, and in order to detect the movement of the convex portion of the rotating body, it is necessary to match the detection directivity direction with the moving direction of the convex portion.

Therefore, the rotation angle sensor has a rotation angle at a predetermined relative angle with respect to the rotating body in order to bring the sensing portion close to the convex portion of the rotating body and to align the detection directing direction with the moving direction of the convex portion of the rotating body. Must be attached to the sensor holder.

For example, in a rotation angle sensor that detects the rotation angle of a rotating body such as a gear provided on the rotating shaft of an internal combustion engine or a transmission in a vehicle, a part of a crank case that rotatably supports the rotating shaft is a rotation angle sensor holding body. Then, the rotation angle sensor is attached.

Since the holding body to which the rotation angle sensor of the crank case is attached has a certain positional relationship with the rotating body, the rotation angle is adjusted so that the sensing portion of the rotation angle sensor aligns the detection direction with the moving direction of the convex portion of the rotating body. The sensor needs to be attached to the holding body of the crank case in a predetermined positional relationship (relative angle).
As for the attachment of such a rotation angle sensor to the holding body, there is an example as in Patent Document 1.

Japanese Patent Application Laid-Open No. 2000-221206

In Patent Document 1, the body of the sensor body (corresponding to the rotation angle sensor) is rotatably fitted and supported on the cylinder of the case, and the flange integrally protruding from the case is held by a fastening member such as a bolt. It is fastened to the body and attached.

When the case is fixed to the holder, the sensor body must fit into the cylindrical portion of the case so that it has a predetermined relative angle to the rotating body.
Moreover, the sensor body is welded and fixed at a predetermined relative angle to the case so that the sensor body is held so as not to fall out from the cylinder portion of the case.

If the holding body has a different mounting angle of the flange protruding from the case with respect to the moving direction of the convex portion of the rotating body, the sensor body may have a predetermined relative angle with respect to the rotating body accordingly. , The sensor body is fitted with the case at a different relative angle, and the sensors are welded and fixed to each other.

In the mounting structure described in Patent Document 1, the sensor body is mounted according to the holding body, but the sensor body and the case must be welded to prevent the sensor body from coming off, which also makes the sensor body and the case accurate. Welding must be performed at a predetermined relative angle, which makes the mounting process complicated, laborious, and costly.

The present invention has been made in view of such a point, and an object of the present invention is a mounting structure and mounting method of a rotation angle sensor capable of mounting a rotation angle sensor on a holding body in a predetermined positional relationship by a simple mounting operation. It is in the point of offering.

In order to achieve the above object, according to the present invention, in the mounting structure of the rotation angle sensor in which the rotation angle sensor for detecting the rotation angle of the detected rotating body is attached to the holding body,
The rotation angle sensor includes a sensor cylindrical portion having a sensing portion for detecting the rotation angle of the rotating body to be detected at its tip, and an intervening member rotates at a predetermined position in the axial direction of the cylindrical central axis of the sensor cylindrical portion. The cylindrical portion of the sensor is fitted movably in a cylindrical holding wall provided on the holding body in a predetermined positional relationship in which the rotation angle sensor can detect the rotation angle of the rotating body to be detected. Therefore, the rotation of the rotation angle sensor is restricted, and the interposition member is fixed to the holding body, so that the movement of the rotation angle sensor in the direction of the cylinder central axis is restricted. A mounting structure for the angle of revolution sensor is provided.

According to this configuration, the rotation angle sensor can be rotated by fitting the sensor cylindrical portion to the cylindrical holding wall of the holding body in a predetermined positional relationship in which the rotation angle sensor can detect the rotation angle of the rotating body to be detected. Since the movement of the rotation angle sensor in the axial direction is restricted by fixing the interposition member rotatably fitted to the sensor cylindrical portion at a predetermined position in the axial direction of the cylindrical central axis to the holding body. The rotation angle sensor can be fixedly attached to the holding body in a predetermined positional relationship by a simple attachment operation.

In a preferred embodiment of the present invention, the sensor cylindrical portion has a flange portion formed on the proximal end side and protrudes in the radial direction from the flange portion to the peripheral portion of the sensor cylindrical portion separated from the flange portion by a predetermined interval. A convex portion is formed, the interposing member is interposed between the flange portion and the convex portion of the sensor cylindrical portion, and the convex portion is fitted to the opening end portion provided on the cylindrical holding wall. The concave portion has a concave portion to be formed, and the concave portion takes a predetermined position at the opening end portion so that the rotation angle sensor can detect the rotation angle of the rotating body to be detected when the convex portion is fitted into the concave portion. The intervening member has an annular portion that is rotatably fitted to the sensor cylindrical portion and an extending portion that extends radially from the annular portion, and the extending portion of the interposing member. A fastening member for fastening the protruding portion to a predetermined fastening portion of the holding body is provided, and the extending portion is fastened to the predetermined fastening portion of the holding body by the interposing member of the cylindrical central axis of the rotation angle sensor. Directional movement is restricted.

According to this configuration, the open end portion of the holding wall has a concave portion to which the convex portion fits, and the concave portion is formed by the rotation angle sensor of the rotating body to be detected when the convex portion at the open end portion is fitted. It is held at a predetermined position where the rotation angle can be detected, and the rotation angle sensor is held by the holding body in a predetermined positional relationship where the rotation angle of the detected rotating body can be detected.
Then, by rotating the interposition member between the flange portion and the convex portion of the sensor cylindrical portion and fastening the extending portion to the predetermined fastening portion of the holding body, the rotation angle sensor can be determined by a simple mounting operation. It can be fixedly attached to the holder due to the positional relationship of.

Since the intervening member interposed between the flange portion and the convex portion of the sensor cylindrical portion of the rotation angle sensor is fastened to the holding body, the movement of the rotation angle sensor is restricted by the interposition member, and the rotation angle sensor becomes It does not fall off from the holding wall of the holding body, and it is not necessary to perform complicated work such as accurate welding, and the mounting work can be simplified.

The convex portion of the sensor cylindrical portion has a function of fitting the convex portion of the sensor cylindrical portion into the concave portion of the holding wall to hold and position the rotation angle sensor on the holding body at a predetermined relative angle, and the interposition member can be rotated between the flange and the holding body. It also has the function of holding and preventing the rotation angle sensor from coming off, simplifying the mounting structure.

In a preferred embodiment, the inner peripheral edge of the annular portion of the interposition member is formed with a notch through which the convex portion penetrates in the axial direction of the cylindrical central axis of the sensor cylindrical portion.

According to this configuration, when the notch of the annular portion of the interposing member is opposed to the convex portion of the sensor cylindrical portion and the annular portion of the interposing member is fitted into the sensor cylindrical portion from the tip side, the notch of the interposing member is inserted. Passes through the convex portion and the interposition member is fitted between the flange portion and the convex portion, so that the interposition member can be easily rotated between the flange portion and the convex portion of the sensor cylindrical portion of the rotation angle sensor. Can be attached to.
After the interposition member is fitted between the flange portion and the convex portion of the sensor cylindrical portion of the rotation angle sensor, the interposition member is located at a position where the notch of the annular portion of the interposition member does not face the convex portion of the sensor cylindrical portion. When the sensor is rotated, the convex portion of the sensor cylindrical portion abuts on the annular portion of the interposition member, and the rotation angle sensor does not fall off from the holding wall of the holding body.

According to a preferred embodiment of the present invention, the convex portions are formed at a plurality of equal intervals in the circumferential direction of the sensor cylindrical portion, and the concave portions correspond to the convex portions of the cylindrical holding wall . A plurality of notches are formed at the open end portion, and a plurality of the notches are formed in the annular portion of the interposing member corresponding to each of the convex portions.

According to this arrangement, the sensor cylinder, a plurality of convex portions in the circumferential direction is formed at equal intervals, a plurality of recesses in the cylindrical retaining wall in correspondence with the convex portions are formed, a cylindrical retaining wall When the sensor cylinder is fitted, the multiple protrusions of the sensor cylinder are fitted into the recesses formed at multiple equal intervals in the circumferential direction at the open end of the cylinder holding wall, and the rotation angle sensor is well-balanced and stable. Is retained.

Further, since a plurality of relative rotation positions of the interposing member with respect to the sensor cylindrical portion in which a plurality of notches of the interposing member face each other with a plurality of equally spaced convex portions of the sensor cylindrical portion, a rotation angle sensor can be obtained. It is easy to fit the interposition member into the sensor cylindrical portion of the above, and the working time can be shortened.

The interposition member is preferably formed in a plate shape.

According to this configuration, since the interposition member is formed in a plate shape, the space between the flange portion and the convex portion of the sensor cylindrical portion of the rotation angle sensor can be narrowed, and the sensor cylindrical portion is shortened to reduce the size of the rotation angle sensor. , A compact mounting structure can be obtained.

A connector that can be detachably connected to the harness can be provided at the base end of the sensor cylindrical portion.

According to this configuration, a connector that is detachably connected to the harness is provided at the base end of the sensor cylindrical portion. Therefore, by integrally configuring the rotation angle sensor and the connector, the number of parts can be reduced and the rotation angle can be reduced. It does not affect the sensor installation work.

In order to achieve the above object, according to the present invention, in the method of mounting the rotation angle sensor in which the sensor cylindrical portion of the rotation angle sensor is fitted to the cylindrical holding wall of the holding body and the rotation angle sensor is attached to the holding body.
The fitting step of fitting the sensor cylindrical portion into the cylindrical holding wall of the holding body in a state where the rotation of the sensor cylindrical portion is restricted in a predetermined positional relationship in which the rotation angle sensor can detect the rotation angle of the rotating body to be detected. The sensor cylindrical portion includes a rotation step of rotating an interposition member rotatably fitted at a predetermined position in the direction of the cylinder center axis, and a fixing step of fixing the interposition member to the holding body. A method of mounting the rotation angle sensor is provided.

According to this method, the fitting step of fitting the sensor cylindrical portion into the holding wall of the holding body in a state where the rotation of the sensor cylindrical portion is restricted in a predetermined positional relationship in which the rotation angle sensor can detect the rotation angle of the detected rotating body, The rotation step of rotating the interposition member rotatably fitted to the sensor cylindrical portion at a predetermined position in the axial direction of the cylinder center axis and the fixing step of fixing the interposition member to the holding body are sequentially executed. The rotation angle sensor is fixedly held on the holding wall of the holding body in a positional relationship in which the rotation angle of the rotating body to be detected can be detected by a simple mounting operation.

According to a preferred embodiment of the present invention, in the fitting step, the tip of the opening end of the cylindrical holding wall is recessed in the direction in which the sensor cylindrical portion is fitted, at a predetermined distance from the flange portion of the sensor cylindrical portion. A convex portion protruding in the radial direction is opposed to a circumferential portion distant from the side, and a sensor cylindrical portion is fitted into the cylindrical holding wall to provide a rotation angle sensor in a positional relationship capable of detecting the rotation angle of the rotating body to be detected. The rotation step includes a step of holding the holding body in the cylindrical holding wall, and the rotation step rotates an interposition member rotatably fitted between the flange portion and the convex portion of the sensor cylindrical portion. Then, the fixing step includes a step of making an extending portion extending in the radial direction from the annular portion fitted to the sensor cylindrical portion of the interposing member to face a predetermined fastening portion of the holding body, and the fixing step includes the holding body. This is a step of fastening the extending portion of the interposing member to the predetermined fastening portion of the above with the fastening member.

According to this method, the convex portion of the sensor cylindrical portion is opposed to the concave portion of the holding wall, the sensor cylindrical portion is fitted into the holding wall, and the rotation angle sensor has a positional relationship in which the rotation angle of the rotating body to be detected can be detected. The fitting process of being held by the holding wall of the holding body and the interposition member rotatably fitted between the flange portion and the convex portion of the sensor cylindrical portion are rotated to hold the extending portion of the holding body. The rotation step of facing the predetermined fastening portion of the holder and the fixing (fastening) step of fastening the extension portion of the interposition member to the predetermined fastening portion of the holding body by the fastening member are sequentially executed by a simple mounting work. The rotation angle sensor is fixedly held on the holding wall of the holding body in a positional relationship in which the rotation angle of the detection rotating body can be detected.

Further, since the intervening member interposed between the flange portion and the convex portion of the sensor cylindrical portion is fastened to the holding body, the rotation angle sensor holds the convex portion of the sensor cylindrical portion regulated by the interposing member. It does not fall off from the holding wall of the body, does not require complicated work such as accurate welding, and can simplify the mounting work.

In a preferred embodiment of the present invention, the sensor cylindrical portion is provided with the intervention from the tip end side thereof in a state where the notch formed in the annular portion of the intervention member is opposed to the convex portion of the sensor cylindrical portion. Further comprising a fitting step of fitting the annular portion of the member, the notch of the interposing member passing through the convex portion, and fitting the interposing member between the flange portion and the convex portion.

According to this method, in the fitting step, the interposition member can be easily rotatably attached between the flange portion and the convex portion of the sensor cylindrical portion of the rotation angle sensor.
Further, after the interposition member is fitted between the flange portion and the convex portion of the sensor cylindrical portion of the rotation angle sensor, the notch of the annular portion of the interposition member is inserted at a position where the notch does not face the convex portion of the sensor cylindrical portion. When the mounting member is rotated, the convex portion of the sensor cylindrical portion comes into contact with the annular portion of the mounting member, and the rotation angle sensor does not fall off from the holding wall of the holding body due to the mounting member fastened to the holding body. ..

In the present invention, the rotation of the rotation angle sensor is restricted by fitting the sensor cylinder portion to the holding wall of the holding body in a predetermined positional relationship in which the rotation angle sensor can detect the rotation angle of the detected rotating body. By fixing the interposition member rotatably fitted to the sensor cylindrical portion at a predetermined position in the axial direction of the cylindrical central axis to the holding body, the axial movement of the rotation angle sensor is restricted, which is simple. In the mounting work, the rotation angle sensor can be fixed and mounted on the holding body in a predetermined positional relationship.

It is a perspective view which shows the mounting structure of the rotation angle sensor which concerns on one Embodiment of this invention. It is an exploded perspective view of a rotation angle sensor and a holding body. It is a rear view of a rotation angle sensor. It is a left side view of a rotation angle sensor. It is a bottom view of the rotation angle sensor, and is the V arrow view of FIG. It is a left side view of a holding body. It is a top view of the holder. It is a top view of the interposition member. It is a perspective view of the rotation angle sensor, the interposition member, and the holding body which shows the fitting process which rotatably fits the interposition member into the sensor cylindrical part of the rotation angle sensor. It is a perspective view of the rotation angle sensor, the interposition member, and the holding body which shows the fitting process of fitting the sensor cylindrical part of the rotation angle sensor into the cylinder holding wall of a holding body. A perspective view of a rotation angle sensor, an intervening member, and a holding body showing a rotation process of rotating an interposing member fitted to a sensor cylindrical portion to make an extending portion of the interposing member face a predetermined fastening portion. is there.

Hereinafter, an embodiment according to the present invention will be described with reference to the drawings.
The mounting structure of the rotation angle sensor according to the present embodiment is, for example, a mounting structure of a rotation angle sensor that detects the rotation angle of a rotating body which is a spur gear provided on the rotation shaft of an internal combustion engine mounted on a vehicle.
FIG. 1 is a perspective view showing a state in which the rotation angle sensor 20 is attached to the holding body 10 in the vicinity of the rotating body 1 as the detected rotating body in the present embodiment.

The rotation angle sensor 20 is attached to the holding body 10 which is a part of a crankcase that rotatably supports the rotation shaft of the rotating body 1 which is a gear.
The rotation angle sensor 20 includes a sensing unit 21a in which the rotation detection element 20s exists in order to detect the rotation angle of the rotating body 1, and the sensing unit 21a is located close to the outer peripheral surface of the rotating body 1 and is located close to the outer peripheral surface of the rotating body 1. Since the rotation detection element 20s has detection directivity, it is attached to the holding body 10 at a predetermined relative angle with respect to the rotating body 1.

A plurality of convex portions (teeth) 2 are formed at equal intervals on the outer peripheral surface of the rotating body 1 in the circumferential direction.
The rotation angle sensor 20 is located directly above the rotating body 1, and the sensing portion 21a of the tip (lower end) protruding portion of the sensor cylindrical portion 21 of the rotation angle sensor 20 is located at the uppermost portion of the outer peripheral surface of the rotating body 1. Close to each other.
Then, in the direction of the velocity vector A at the uppermost position of the convex portion 2 that rotates with the rotation of the rotating body 1, the detection direction direction of the rotation detecting element 20s is such that the rotation detecting element 20s can detect the movement of the convex portion 2. Is matched.

With reference to FIG. 1, the direction of the speed vector A is the forward FR in which the vehicle advances, the opposite direction is the rear RR, the left side facing the front FR is the left LH, and the right side is the right RH. The rotation center axis C of the rotating body 1 is oriented in the left-right horizontal direction, and the direction orthogonal to the rotation center axis C on the horizontal plane including the rotation center axis C is the front-rear horizontal direction.

FIG. 2 is an exploded perspective view of the rotation angle sensor 20 and the holding body 10.
FIG. 3 is a rear view of the rotation angle sensor 20, FIG. 4 is a left side view of the rotation angle sensor 20, and FIG. 5 is a bottom view of FIG. It is supposed to be in the state when it is installed.

With reference to FIGS. 2 to 5, the rotation angle sensor 20 is attached to the holding body 10 in a posture in which the cylindrical central axis Cs of the sensor cylindrical portion 21 is oriented in the vertical direction.
The rotation angle sensor 20 has the small-diameter sensing portion 21a protruding from the tip (lower end) of the sensor cylindrical portion 21 corresponding to the sensor body, and the connector 25 to be connected as an external harness is integrated with the base end (upper end). It is provided in.

The connector 25 is formed by bending from the base end of the sensor cylindrical portion 21 and projecting to the left as a rectangular cylinder. A connection terminal 25t is projected in the rectangular cylinder of the connector 25, and the other connector (not shown) having a connection end of an external harness is detachably connected to the connection terminal 25t.

In the sensor cylindrical portion 21 of the rotation angle sensor 20, the sensing portion 21a is reduced in diameter and protrudes toward the tip end side of the central cylindrical portion 21b, and the proximal end side cylindrical portion 21c whose diameter is expanded toward the proximal end side of the central cylindrical portion 21b. It is formed. The base end side cylindrical portion 21c is formed with a flange portion 22 extending in an annular shape on the base end side of the base end side cylindrical portion 21c, and the connector 25 is integrally formed at the base end above the flange portion 22. It is provided.

Further, the base end side cylindrical portion 21c is formed with four convex portions 23 protruding in the radial direction at circumferential portions separated from the flange portion 22 toward the tip end side at predetermined intervals at equal intervals in the circumferential direction.
In the rotation angle sensor 20 in the state when it is attached to the holding body 10, the convex portions 23 having the same shape are located at four locations on the front-rear side and the left-right side of the base end side cylindrical portion 21c, respectively.

The protruding end faces of the convex portions 23 projecting from the base end side cylindrical portion 21c to the front, back, left and right are in contact with the circumscribed circle having a diameter slightly smaller than the outer diameter of the flange portion 22. In the rotation angle sensor 20, the detection direction of the rotation detection element 20s is aligned with the front-rear direction, which is the movement direction (direction of the velocity vector A) of the uppermost convex portion 2 of the rotating body 1.

FIG. 6 is a left side view of the holding body 10 which is a part of the crankcase, and FIG. 7 is a top view of the holding body 10. With reference to FIGS. 2, 6 and 7, the holding body 10 includes a flat cylindrical holding wall 11 that fits and holds the sensor cylindrical portion 21 of the rotation angle sensor 20 in the radial direction from the cylindrical holding wall 11. The fastening boss portion 12 extends.

The cylindrical central axis Ch of the cylindrical holding wall 11 is oriented in the vertical direction, and when the rotation angle sensor 20 is attached, the cylindrical holding wall 11 is coaxial with the cylindrical central axis Cs of the sensor cylindrical portion 21. The inner diameter of the cylindrical holding wall 11 is substantially equal to the outer diameter of the base end side cylindrical portion 21c of the rotation angle sensor 20, and the outer diameter of the cylindrical holding wall 11 is front, back, left and right from the base end side cylindrical portion 21c of the rotation angle sensor 20. Each is substantially equal to the circumscribed circle of the protruding convex portion 23.

In the open end 11e of the cylinder holding wall 11, a recess 13 recessed in the direction (downward) into which the sensor cylinder 21 is fitted from above is in a positional relationship in which the rotation angle of the rotating body 1 to be detected can be detected. The four convex portions 23 of the portion 21 are formed in a shape that can be fitted to each of the front, rear, left, and right positions where they can be fitted (see FIG. 2).

Therefore, when the sensor cylindrical portion 21 of the rotation angle sensor 20 is inserted into the cylindrical holding wall 11 of the holding body 10 from above at a predetermined relative angle at which the rotation angle of the rotating body 1 to be detected can be detected, the cylindrical holding wall 11 The base end side cylindrical portion 21c of the sensor cylindrical portion 21 is fitted inside, and the front, rear, left and right convex portions 23 of the sensor cylindrical portion 21 are fitted from above into the front, rear, left and right concave portions 13 of the opening upper end portion of the cylindrical holding wall 11. It is supported and the rotation angle sensor 20 is held by the cylindrical holding wall 11 of the holding body 10.

The fastening boss portion 12 extending from the cylindrical holding wall 11 of the holding body 10 extends diagonally rearward from the cylindrical holding wall 11 slightly to the right of the rear RR, and is tapered to the fastening boss portion 12 in a top view. Bolt holes 12h drilled in the vertical direction are provided. As shown in FIG. 7, there is a fastening boss portion 12 in a direction deviated to the right from the recess 13 on the rear side of the cylindrical holding wall 11.
A cylindrical portion 15 for supporting parts that is oriented in the left-right direction is formed in the lower portion of the fastening boss portion 12.

An interposition member 30 is rotatably interposed between the flange portion 22 and the convex portion 23 of the sensor cylindrical portion 21 of the rotation angle sensor 20. FIG. 8 is a top view of the interposing member 30 at a position attached to the holding body 10.

With reference to FIGS. 2 and 8, the interposition member 30 has an annular portion 31 that rotatably fits between the flange portion 22 and the convex portion 23 of the sensor cylindrical portion 21, and a radial portion from the annular portion 31. It is a plate-shaped member composed of an extension portion 32 extending to the surface, and the extension portion 32 is tapered from the annular portion 31, and the extension portion 32 is perforated with a bolt mounting hole 32h.

The inner diameter of the annular portion 31 of the interposition member 30 is substantially equal to the outer diameter of the proximal end side cylindrical portion 21c of the sensor cylindrical portion 21 of the rotation angle sensor 20, and the inner peripheral edge portion of the annular portion 31 has a proximal end side cylinder. Through grooves 33 are formed in which the front, rear, left and right convex portions 23 of the portion 21c penetrate in the axial direction of the cylindrical central axis Cs of the sensor cylindrical portion, respectively.

With reference to FIG. 8 which is a top view of the interposing member 30 at the position attached to the holding body 10, the extending portion 32 extending in the radial direction from the annular portion 31 is slightly larger than the rear RR from the annular portion 31. It extends diagonally backward, which is deflected to the right, and the bolt mounting hole 32h of the extension portion 32 extends diagonally rearward, which is slightly deflected to the right from the rear RR, from the cylindrical holding wall 11 of the holding body 10 in a top view. It faces the bolt hole 12h of the fastening boss portion 12 that has been formed.

Then, referring to FIG. 8, at the position where the interposition member 30 is attached to the holding body 10, as shown in FIG. 8, the four notches 33 on the inner peripheral edge portion of the annular portion 31 are formed in the front-rear, left-right and rear directions. It is in a position that is diagonally offset.

Hereinafter, a process of attaching the rotation angle sensor 20 to the holding body 10 with the interposing member 30 interposed therebetween will be described with reference to FIGS. 2, 9 to 11.
From the disassembled state shown in FIG. 2, first, the notch 33 of the annular portion 31 of the interposition member 30 is opposed to the convex portion 23 of the sensor cylindrical portion 21 (the state shown in FIG. 2), and the sensor cylindrical portion 21 is at the tip thereof. The annular portion 31 of the interposing member 30 is fitted from the side, the notch 33 of the interposing member 30 passes through the convex portion 23 of the base end side cylindrical portion 21c of the sensor cylindrical portion 21, and the interposing member 30 is flanged 22. It is fitted between the convex portion 23 and the convex portion 23 (fitting process).

FIG. 9 shows a state in which the interposing member 30 is fitted between the flange portion 22 and the convex portion 23 of the base end side cylindrical portion 21c. In the fitting process, as described above, the interposition member 30 is simply rotatably attached between the flange portion 22 and the convex portion 23 of the base end side cylindrical portion 21c of the sensor cylindrical portion 21 of the rotation angle sensor 20. be able to.

Next, the front, rear, left and right convex portions 23 of the sensor cylindrical portion 21 of the rotation angle sensor 20 are opposed to the front, rear, left and right concave portions 13 of the cylindrical holding wall 11 of the holding body 10 (see FIG. 9), and the sensor is placed on the cylindrical holding wall 11. The cylindrical portion 21 is fitted, and the rotation angle sensor 20 is held by the cylindrical holding wall 11 of the holding body 10 in a positional relationship in which the rotation angle of the rotating body 1 to be detected can be detected (fitting step). FIG. 10 shows a state in which the sensor cylindrical portion 21 is fitted into the cylindrical holding wall 11.

Next, the interposition member 30 in a state of being rotatably fitted between the flange portion 22 and the convex portion 23 of the sensor cylindrical portion 21 is rotated as shown by an arrow B in FIG. The extension portion 32 of the interposition member 30 is made to face the fastening boss portion 12 of the holding body 10, and the bolt mounting hole 32h of the extension portion 32 is aligned with the bolt hole 12h of the fastening boss portion 12 (rotation step).

FIG. 11 shows a state in which the interposition member 30 is rotated. In this state in which the interposing member 30 is rotated, the notch 33 of the interposing member 30 facing the convex portion 23 of the sensor cylindrical portion 21 is displaced from the convex portion 23 and does not face the convex portion 23.

Next, as shown in FIG. 11, the fastening boss portion penetrates the bolt 40, which is the fastening member, through the bolt mounting hole 32h of the extending portion 32 of the interposing member 30 that matches the bolt hole 12h of the fastening boss portion 12. It is screwed into the bolt hole 12h of 12, and the extending portion 32 of the interposition member 30 is fastened to the fastening boss portion 12 of the holding body 10 (fastening (fixing) step). FIG. 1 shows a state in which the interposing member 30 is fastened to the holding body 10.

By fastening the interposing member 30 to the holding body 10, the interposing member 23 in which the convex portion 23 of the sensor cylindrical portion 21 that no longer faces the through groove 33 of the interposing member 30 is fastened to the holding body 10 is fastened to the holding body 10. Restricted by 30, the rotation angle sensor 20 does not fall out of the cylindrical holding wall 11 of the holding body 10.

When the rotation angle sensor 20 is attached to the holding body 10 through each of the above steps, as shown in FIG. 1, in the rotation angle sensor 20, the sensing portion 21a at the tip of the sensor cylindrical portion 21 is the uppermost portion of the rotating body 1. At a predetermined relative angle that can detect the rotation angle of the rotating body 1 by aligning the detection direction of the rotation detecting element 20s so that the rotation detecting element 20s in the sensing unit 21a can detect the movement of the convex portion 2. The rotation angle sensor 20 is held by the cylindrical holding wall 11 of the holding body 10.

In one embodiment of the present invention described in detail above, the following effects are achieved.
The open end 11e of the cylindrical holding wall 11 has a concave portion 13 to which the convex portion 23 fits, and the concave portion 13 is detected by the rotation angle sensor 20 when the convex portion 23 in the open end portion 11e fits. At a predetermined position where the rotation angle of the rotating body 1 can be detected, the rotation angle sensor 20 is held by the holding body 10 in a predetermined positional relationship where the rotation angle of the rotating body 1 can be detected, and the extending portion 32 is held by the holding body 10. Since the movement of the rotation angle sensor 20 is restricted by the interposition member 30 fastened to the predetermined fastening portion 12, the convex portion of the sensor cylindrical portion 21 of the rotation angle sensor 20 is formed in the concave portion 13 of the cylindrical holding wall 11 of the holding body 10. The sensor cylindrical portion 21 is fitted into the cylindrical holding wall 11 with the 23 facing each other, and the interposing member 30 between the flange portion 22 and the convex portion 23 of the sensor cylindrical portion 21 is rotated to form the extending portion 32. By fastening to the predetermined fastening portion 12 of the holding body 10, the rotation angle sensor 20 can be fixedly attached to the holding body 10 in a predetermined positional relationship by a simple mounting operation.

Since the intervening member 30 interposed between the flange portion 22 and the convex portion 23 of the sensor cylindrical portion 21 of the rotation angle sensor 20 is fastened to the holding body 10, the interposition member 30 moves the rotation angle sensor 20. The rotation angle sensor 20 does not fall out from the cylindrical holding wall 11 of the holding body 10, and it is not necessary to perform complicated work such as accurate welding, and the mounting work can be simplified.

The convex portion 23 of the sensor cylindrical portion 21 has a function of fitting into the concave portion 13 of the cylindrical holding wall 11 to hold and position the rotation angle sensor 20 on the holding body 10 in a predetermined positional relationship (relative angle), and a flange portion. It also has a function of rotatably holding the interposition member 30 with the 22 to prevent the rotation angle sensor 20 from coming off, and simplifies the mounting structure.

A notch 33 through which the convex portion 23 penetrates in the axial direction of the cylindrical central axis Cs of the sensor cylindrical portion 21 is formed on the inner peripheral edge portion of the annular portion 31 of the interposition member 30, so that the convex portion 21 of the sensor cylindrical portion 21 is convex. When the notch 33 of the annular portion 31 of the interposing member 30 is opposed to the portion 23 and the annular portion 31 of the interposing member 30 is fitted into the sensor cylindrical portion 21 from the tip side, the notch 33 of the interposing member 30 is convex. Since the interposition member 30 is fitted between the flange portion 22 and the convex portion 23 through the portion 23, it is easily inserted between the flange portion 22 and the convex portion 23 of the sensor cylindrical portion 21 of the rotation angle sensor 20. The mounting member 30 can be rotatably attached.

After the interposition member 30 is fitted between the flange portion 22 and the convex portion 23 of the sensor cylindrical portion 21 of the rotation angle sensor 20, the notch 33 of the annular portion 31 of the interposition member 30 is the convex portion of the sensor cylindrical portion 21. When the interposition member 30 is rotated to a position not facing the portion 23, the convex portion 23 of the sensor cylindrical portion 21 comes into contact with the annular portion 31 of the interposition member 30, and the rotation angle sensor 20 holds the holding body 10 in a cylinder. It will not fall out of the wall 11.

A plurality of convex portions 23 are formed at equal intervals in the circumferential direction of the sensor cylindrical portion 21, and a plurality of concave portions 13 are formed in the cylindrical holding wall 11 corresponding to each convex portion 23. When the sensor cylindrical portion 21 is fitted, the plurality of convex portions 23 of the sensor cylindrical portion 21 are fitted into the recesses 13 formed at a plurality of equal intervals in the circumferential direction in the open end portion 11e of the cylindrical holding wall 11, and the rotation angle is increased. The sensor 20 is held in a well-balanced and stable manner.

Further, a plurality of relative rotation positions of the interposing member 30 with respect to the sensor cylindrical portion 21 in which a plurality of notches 33 of the interposing member 30 face each other of a plurality of equally spaced convex portions 23 of the sensor cylindrical portion 21 are possible. Therefore, it is easy to fit the interposition member 30 into the sensor cylindrical portion 21 of the rotation angle sensor 20, and the working time can be shortened.

Since the interposition member 30 is formed in a plate shape, the space between the flange portion 22 and the convex portion 23 of the sensor cylindrical portion 21 of the rotation angle sensor 20 can be narrowed, the sensor cylindrical portion 21 is shortened, and the rotation angle sensor 20 is made smaller. It can be made into a compact mounting structure.

Since the base end of the sensor cylindrical portion 21 has a connector 25 that is detachably connected to the harness, the rotation angle sensor 20 and the connector 25 can be integrally configured to reduce the number of parts and the rotation angle sensor 20. Does not affect the installation work.

The convex portion 23 of the sensor cylindrical portion 21 is opposed to the concave portion 13 of the cylindrical holding wall 11, the sensor cylindrical portion 21 is fitted into the cylindrical holding wall 11, and the sensor cylindrical portion 21 is rotated in a positional relationship in which the rotation angle of the detected rotating body 1 can be detected. The fitting process in which the angle sensor 20 is held by the cylindrical holding wall 11 of the holding body 10 and the interposition member 30 rotatably fitted between the flange portion 22 and the convex portion 23 of the sensor cylindrical portion 21 are rotated. A rotation step of moving the extending portion 32 to face the predetermined fastening portion 12 of the holding body 10 and fastening the extending portion 32 of the interposition member 30 to the predetermined fastening portion 12 of the holding body 10 by the fastening member 40. The rotation angle sensor 20 is held by the cylindrical holding wall 11 of the holding body 10 in a positional relationship in which the rotation angle of the rotating body 1 to be detected can be detected by a simple mounting work in which the fastening (fixing) step is sequentially executed.

Since the intervening member 30 interposed between the flange portion 22 and the convex portion 23 of the sensor cylindrical portion 21 is fastened to the holding body 10, the rotation angle sensor 20 is intervened by the convex portion 23 of the sensor cylindrical portion 21. It is not restricted by the member 30 and does not fall out from the cylindrical holding wall 11 of the holding body 10, and it is not necessary to perform complicated work such as accurate welding, and the mounting work can be simplified.

The notch 33 formed in the annular portion 31 of the interposing member 30 is opposed to the convex portion 23 of the sensor cylindrical portion 21, and the annular portion 31 of the interposing member 30 is fitted into the sensor cylindrical portion 21 from the tip side. By the fitting process in which the through groove 33 of the mounting member 30 passes through the convex portion 23 and the interposing member 30 is fitted between the flange portion 22 and the convex portion 23, the sensor cylindrical portion 21 of the rotation angle sensor 20 can be easily used. The interposition member 30 can be rotatably attached between the flange portion 22 and the convex portion 23.

After the interposition member 30 is fitted between the flange portion 22 and the convex portion 23 of the sensor cylindrical portion 21 of the rotation angle sensor 20, the notch 33 of the annular portion 31 of the interposition member 30 is the convex portion of the sensor cylindrical portion 21. When the interposing member 30 is rotated to a position not facing the portion 23, the convex portion 23 of the sensor cylindrical portion 21 comes into contact with the annular portion 31 of the interposing member 30, and the interposing member 30 is fastened to the holding body 10. As a result, the rotation angle sensor 20 does not fall out of the cylindrical holding wall 11 of the holding body 10.

Although the mounting structure and mounting method of the rotation angle sensor according to the embodiment of the present invention have been described above, the aspects of the present invention are not limited to the above-described embodiments and vary within the scope of the gist of the present invention. It includes those carried out in various aspects.

For example, the rotation angle sensor according to the present invention is not limited to detecting the rotation angle of a rotating body provided on the rotating shaft of an internal combustion engine mounted on a vehicle, but detects the rotation angles of various rotating bodies. ..
The rotation angle sensor detects the rotation angle of the rotating body, but by detecting the rotation angle of the rotating body, the rotation speed of the rotating body can also be detected, and it is also a rotation speed detection sensor.

1 ... rotating body, 2 ... convex part (teeth),
10 ... Holder, 11 ... Cylindrical holding wall, 11e ... Open end, 12 ... Fastening boss, 12h ... Bolt hole, 13 ... Recess,
20 ... Rotation angle sensor, 20s ... Rotation detection element, 21 ... Sensor cylindrical part, 21a ... Sensing part, 21b ... Central cylindrical part, 21c ... Base end side cylindrical part, 22 ... Flange part, 23 ... Convex part, 25 ... Connector ,
30 ... Intermediary member, 31 ... Ring part, 32 ... Extension part, 32h ... Bolt mounting hole, 33 ... Notch,
40 ... Bolt.

Claims (9)

In the mounting structure of the rotation angle sensor in which the rotation angle sensor (20) for detecting the rotation angle of the detected rotating body (1) is attached to the holding body (10).
The rotation angle sensor (20) includes a sensor cylindrical portion (21) having a sensing portion (21a) for detecting the rotation angle of the rotating body (1) to be detected at the tip thereof.
An interposition member (30) is rotatably fitted to the sensor cylindrical portion (21) at a predetermined position in the axial direction of the cylindrical central axis (Cs).
In the cylindrical holding wall (11) provided on the holding body (10), the sensor cylindrical portion (20) has a predetermined positional relationship in which the rotation angle of the detected rotating body (1) can be detected. By fitting 21), the rotation of the rotation angle sensor (20) is restricted.
Rotation characterized in that movement of the rotation angle sensor (20) in the direction of the cylindrical central axis (Cs) is restricted by fixing the interposition member (30) to the holding body (10). Angle sensor mounting structure. The sensor cylindrical portion (21) has a flange portion (22) formed on the base end side, and protrudes radially from the flange portion (22) to a circumferential portion of the sensor cylindrical portion separated from the flange portion (22) toward the tip end side at a predetermined interval. A convex portion (23) is formed, and the interposing member (30) is interposed between the flange portion (22) and the convex portion (23) of the sensor cylindrical portion (21).
The open end (11e) provided on the cylindrical holding wall (11) has a recess (13) into which the convex portion (23) fits.
When the convex portion (23) is fitted into the concave portion (13) at the open end portion (11e), the rotation angle sensor (20) rotates the rotating body (1) to be detected. Formed to take a predetermined position where the corners can be detected
The interposition member (30) includes an annular portion (31) that is rotatably fitted to the sensor cylindrical portion (21) and an extension portion (32) that extends radially from the annular portion (31). Have,
A fastening member (40) for fastening the extending portion (32) of the interposing member (30) to a predetermined fastening portion (12) of the holding body (10) is provided.
The direction of the cylindrical central axis (Cs) of the rotation angle sensor (20) by the interposing member (30) in which the extending portion (32) is fastened to the predetermined fastening portion (12) of the holding body (10). The mounting structure of the rotation angle sensor according to claim 1, wherein the movement of the rotation angle sensor is restricted. A notch (23) through which the convex portion (23) penetrates in the axial direction of the cylindrical central axis (Cs) of the sensor cylindrical portion (21) is formed in the inner peripheral edge portion of the annular portion (31) of the interposition member (30). 33) The mounting structure of the rotation angle sensor according to claim 2, wherein the rotation angle sensor is formed. The convex portions (23) are formed at a plurality of equal intervals in the circumferential direction of the sensor cylindrical portion (21).
A plurality of the concave portions (13) are formed at the open end portion (11e) of the cylindrical holding wall (11) corresponding to each of the convex portions (23).
The rotation angle according to claim 3, wherein a plurality of the notches (33) are formed in the annular portion (31) of the interposing member (30) corresponding to each of the convex portions (23). Sensor mounting structure. The rotation angle sensor mounting structure according to any one of claims 1 to 4, wherein the interposition member (30) is formed in a plate shape. The rotation angle sensor according to any one of claims 1 to 5, wherein a connector (25) that is detachably connected to a harness is provided at the base end of the sensor cylindrical portion (21). Construction. The rotation angle sensor (20) is attached to the holding body (10) by fitting the sensor cylindrical portion (21) of the rotation angle sensor (20) to the cylindrical holding wall (11) of the holding body (10). In the method
The sensor cylindrical portion (21) is attached to the cylindrical holding wall (11) of the holding body (10) in a predetermined positional relationship in which the rotation angle sensor (20) can detect the rotation angle of the rotating body (1) to be detected. The fitting process of fitting in a state where rotation is restricted, and
A rotation step of rotating an interposition member (30) rotatably fitted to the sensor cylindrical portion (21) at a predetermined position in the direction of the cylindrical central axis (Cs).
A fixing step of fixing the interposition member (30) to the holding body (10), and
A method of mounting a rotation angle sensor, which comprises. In the fitting step, the flange of the sensor cylindrical portion (21) is formed in a recess (13) recessed in the opening end portion (11e) of the cylindrical holding wall (11) in the direction in which the sensor cylindrical portion (21) is fitted. The sensor cylindrical portion (21) is fitted into the cylindrical holding wall (11) with the convex portion (23) protruding in the radial direction facing the circumferential portion separated from the portion (22) toward the tip side at a predetermined interval. Including the step of holding the rotation angle sensor (20) in the cylindrical holding wall (11) of the holding body (10) in a positional relationship in which the rotation angle of the rotating body (1) to be detected can be detected.
In the rotation step, the interposition member (30) rotatably fitted between the flange portion (22) and the convex portion (23) of the sensor cylindrical portion (21) is rotated. , A predetermined fastening portion (12) of the holding body (10) is provided with an extending portion (32) extending in the radial direction from the annular portion (31) fitted to the sensor cylindrical portion (21) of the interposing member (30). ) Including the process of facing
The fixing step is a step of fastening the extending portion (32) of the interposition member (30) to the predetermined fastening portion (12) of the holding body (10) by the fastening member (40). The method for mounting a rotation angle sensor according to claim 7. The sensor cylindrical portion (23) is opposed to the convex portion (23) of the sensor cylindrical portion (21) with a notch (33) formed in the annular portion (31) of the interposing member (30). The annular portion (31) of the interposing member (30) is fitted into the 21) from the tip end side, and the notch (33) of the interposing member (30) passes through the convex portion (23). The method for mounting a rotation angle sensor according to claim 8, further comprising a fitting step of fitting the interposition member (30) between the flange portion (22) and the convex portion (23).

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