JP2022029564A - Manipulated variable sensor attachment structure of operation pedal device for vehicle - Google Patents

Abstract

To arrange a guard member which protects a stroke sensor by the stroke sensor by attaching the stroke sensor to a pedal bracket in a direction orthogonal to a direction of rotational pivoting of an operation pedal on the pedal bracket.SOLUTION: An operation pedal device 10 for a vehicle comprises a stroke sensor 30 which detects a rotational stroke of a pedal arm (operation pedal) 12. The stroke sensor 30 is attached to a sensor attachment bracket 28 through a stud bolt 32. Then a cut attachment groove 36 which is open to a direction orthogonal to an axis of the stud bolt 32 is formed in a stud bolt attachment part 34 of the stroke sensor 30. Further, a guard member 46 is arranged at the pedal arm 12, and the guard member 46 consists of a main body part 46A and a flange part 46B capable of covering a front face side and a lower peripheral face of the stroke sensor 30.SELECTED DRAWING: Figure 1

Description

The present invention relates to an operation amount sensor mounting structure in a vehicle operation pedal device. In particular, the present invention relates to an operation amount sensor mounting structure such as a stroke sensor in a vehicle brake pedal device.

Vehicles such as automobiles are equipped with various vehicle operation pedal devices. For example, there is a vehicle brake pedal device. A general-purpose operation pedal device for a vehicle includes a pedal bracket attached to the vehicle body and an operation pedal pivotally supported by the pedal bracket and attached rotatably. Then, the brake device is operated by rotating the operation pedal by stepping on the foot or the like.

By the way, these vehicle operation pedal devices are provided with an operation amount sensor that detects the operation amount of the operation pedal. As the operation amount sensor, there is a stroke sensor that detects the rotation stroke of the operation pedal (see Patent Document 1 below). The stroke sensor controls various devices of the vehicle based on the rotation stroke of the operation pedal. As the operation amount sensor, there is also a load sensor that detects the operation load of the operation pedal.

The stroke sensor is usually installed near the position where the operating pedal is rotatably supported by the pedal bracket. For this reason, when the driver inadvertently kicks up the operation pedal, the driver's foot touches the stroke sensor, or another relatively large external force is applied. It may damage the stroke sensor and affect its durability.

In order to protect the stroke sensor in the above-mentioned state, there is a measure to protect the stroke sensor by arranging a guard member at the lower position of the stroke sensor (see Patent Document 2 below). This protects the stroke sensor from external force from the lower part.

Japanese Unexamined Patent Publication No. 2018-139059 Japanese Unexamined Patent Publication No. 2016-99794

The protection of the stroke sensor by the guard member described above can protect against an abnormal external force from the lower part, but has a problem that it cannot protect against an abnormal external force from the side.

By the way, the conventional general stroke sensor mounting structure is such that when the stroke sensor is mounted on the pedal bracket, it is mounted from the same direction as the rotation shaft support direction of the operation pedal to the pedal bracket. Therefore, in order to mount the stroke sensor, a space for mounting operation is required in the mounting direction, so that there is a problem that the guard member cannot be arranged on the side of the stroke sensor.

Therefore, the present invention has been devised in view of the above points, and the problem to be solved by the present invention is to change the mounting direction of the operation amount sensor to the pedal bracket to the pedal bracket of the operation pedal. By setting the direction orthogonal to the rotation shaft support direction, it is possible to dispose the guard member that protects the manipulated variable sensor laterally of the manipulated variable sensor.

In order to solve the above problems, the operation amount sensor mounting structure in the operation pedal device for a vehicle according to the present invention takes the following means.

According to the first aspect of the present invention, the vehicle operation pedal device includes a pedal bracket attached to the vehicle body of the vehicle and an operation pedal pivotally supported by the pedal bracket and rotatably attached to the pedal bracket. The operation amount sensor mounting structure is such that the operation amount sensor for detecting the information on the operation amount is attached to the sensor mounting bracket integrally disposed on the pedal bracket, and the operation amount sensor is attached to the sensor mounting bracket. The stud bolts of the above are arranged in the same direction as the axial support direction of the operation pedal, and the stud bolts are opened at the stud bolt mounting portion in the operation amount sensor in a direction orthogonal to the axis of the stud bolts. A notch mounting groove through which the sensor can be inserted is formed, and a guard member for protecting the operation amount sensor from an abnormal external force operation is arranged on the pedal arm of the operation pedal, and the guard is provided. The member is an operation amount sensor mounting structure in a vehicle operation pedal device, which is configured to cover the operation amount sensor on the axial front side and the lower peripheral surface of the stud bolt to which the operation amount sensor is attached.

The second invention of the present invention is the operation amount sensor mounting structure in the operation pedal device for vehicles of the first invention described above, and the guard member is arranged on the lower peripheral surface of the operation amount sensor. It is an operation amount sensor mounting structure in a vehicle operation pedal device in which a main body portion and a flange portion arranged on the front side in the axial direction of the operation amount sensor are formed in an L shape.

The third invention of the present invention is the operation amount sensor mounting structure in the vehicle operation pedal device of the first invention or the second invention described above, and is a cutting formed at a stud bolt mounting portion in the operation amount sensor. Two notch mounting grooves are formed, and the positions where the two notch mounting grooves open are opposite to each other when viewed in a direction orthogonal to the axis of the stud bolt, and at the time of mounting. It is an operation amount sensor mounting structure in a vehicle operation pedal device in which the bottom of the notch mounting groove is opened so as to be pressed against a stud bolt by tightening a nut.

A fourth aspect of the present invention is the operation amount sensor mounting structure in any of the above-mentioned first to third vehicle operation pedal devices, wherein the notch mounting groove is a groove opening from the groove bottom. This is an operation amount sensor mounting structure in an operation pedal device for a vehicle, which is formed in a tapered shape in which the groove width gradually widens toward.

A fifth aspect of the present invention is the operation amount sensor mounting structure in any of the above-mentioned first to fourth vehicle operation pedal devices, wherein the vehicle operation pedal device is a vehicle brake pedal. It is an operation amount sensor mounting structure in an operation pedal device for a vehicle, which is a device.

According to the means of the present invention described above, the guard that protects the manipulated variable sensor by setting the mounting direction of the manipulated variable sensor to the pedal bracket in a direction orthogonal to the rotation axis support direction of the operating pedal to the pedal bracket. It is possible to arrange the member laterally of the operation amount sensor.

It is a perspective view which looked at the whole structure of a brake pedal device from the right rear side. FIG. 3 is a side view of the brake pedal device shown in FIG. 1 as viewed from the right side. It is a rear view of the brake pedal device shown in FIG. 1 as viewed from the rear. It is an enlarged view of the IV part of FIG. It is a perspective view which shows the stroke sensor mounting part which mounts a stroke sensor. It is a perspective view which shows the connection relationship between a brake pedal and a stroke sensor. FIG. 2 is a cross-sectional view taken along the line VII-VII of FIG. It is a supplementary figure for demonstrating the mounting state of the stroke sensor in FIG. It is a top view which shows the basic form of the notch mounting groove formed in a stroke sensor. 9 is a plan view showing another embodiment of the notch mounting groove shown in FIG. 9. It is a top view which shows the modification of the shape of the notch mounting groove.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The vehicle operation pedal device of the present embodiment is the case of the vehicle brake pedal device 10, and the operation amount sensor is the case of the stroke sensor 30 that detects the rotational stroke of the pedal arm 12. The directions such as up / down, front / back, left / right, etc. in the description of each figure are indications when viewed in the traveling direction of a vehicle such as an automobile. L in each figure indicates the front-rear direction, H indicates the height direction, and W indicates the left-right direction (width direction of the vehicle). However, the indications specifically shown individually are based on the indications. When the left and right components are individually designated when the components are present on the left and right, L is attached to the left component and the right component is indicated by the reference numeral indicating the component. Shown with R.

<Overall configuration of brake pedal device 10>
FIG. 1 shows the overall configuration of the brake pedal device 10. FIG. 2 shows the right side view. FIG. 3 shows the rear view. The brake pedal device 10 is usually arranged in the lower part of the front part of the driver's seat of a vehicle such as an automobile. The brake pedal device 10 includes a pedal arm 12. The pedal arm 12 corresponds to the operation pedal of the present invention. As shown in FIGS. 1 and 2, the pedal arm 12 has a long pedal arm main body 14 arranged in the vertical direction, a pedal tread 16 attached to the lower end portion of the pedal arm main body 14, and an upper end portion thereof. It includes a boss portion 18 (see FIG. 7) for rotatably attaching the attached pedal arm main body 14.

An instrument panel (not shown) and a dash panel 22 (see FIG. 2) are arranged as vehicle body components in the front part of the driver's seat of a vehicle such as an automobile, and the pedals shown in FIGS. 1 to 3 are arranged on these panels. The bracket 20 is arranged. The pedal bracket 20 is arranged such that the right side pedal bracket 20R and the left side pedal bracket 20L sandwich the boss portion 18 of the pedal arm main body 14. The boss portion 18 (see FIG. 7) at the upper end of the pedal arm main body 14 is pivotally supported and attached by a support shaft 26 (see FIG. 7) suspended between the pedal brackets 20R and 20L. As a result, the pedal arm 12 including the pedal arm main body 14 is rotatably supported by the pedal bracket 20, and the brake operation is performed by stepping on the pedal tread surface 16 at the lower end with a foot.

Therefore, the pedal tread 16 is integrally attached to the lower end of the long pedal arm main body 14, and is positioned so that the driver can step on the pedal with his / her foot. The pedal tread 16 has a shape that can be easily operated, and in the present embodiment, the stepping portion thereof has a horizontally long rectangular shape.

<Stroke sensor 30 and sensor mounting bracket 28>
The brake pedal device 10 of the present embodiment is equipped with a stroke sensor 30 that detects the rotational state of the pedal arm 12. The stroke sensor 30 is provided in the hybrid vehicle, and controls a break operating hydraulic device (brake booster or the like) according to the operating stroke of the pedal arm 12.

As is well shown in FIG. 4, the stroke sensor 30 is attached to the sensor mounting bracket 28, and the sensor mounting bracket 28 is integrally attached to the right pedal bracket 20R. Therefore, the stroke sensor 30 is configured to be mounted on the pedal bracket 20 via the sensor mounting bracket 28. As shown in FIG. 5, in the mounting of the sensor mounting bracket 28 to the right pedal bracket 20R, the leg portion 28a formed on the sensor mounting bracket 28 is fixed to the right pedal bracket 20R by welding and integrated. .. The sensor mounting bracket 28 is made of steel plate.

As is well shown in FIG. 5, the sensor mounting bracket 28 is formed in an elliptical shape, and a circular hole 27 for fitting and mounting the mounting base portion 30a of the stroke sensor 30 is formed at the central portion. The fitting state is shown in FIGS. 7 and 8 described later. Further, two stud bolts 32 are arranged at both side positions of the circular holes 27 in the sensor mounting bracket 28. The arrangement direction of the stud bolt 32 is the same as the axial support direction of the pedal arm 12. As seen in FIG. 5, it is defined as the left-right direction (width direction) in the W direction.

As shown in FIG. 9, stud bolt mounting portions 34 (hereinafter, simply referred to as “bolt mounting portions 34”) are formed on both sides of the base of the stroke sensor 30, and stud bolts 32 are attached to the bolt mounting portions 34. Two notch mounting grooves 36 that can be inserted are formed. The configuration of the notch mounting groove 36 is a configuration characterized by this embodiment. Both of the two notch mounting grooves 36 shown in FIG. 9 are formed in a form of opening downward as seen in FIG. 9. The opening direction of the notch mounting groove 36 is orthogonal to the axial direction of the stud bolt 32.

The arrangement spacing width of the two stud bolts 32 arranged on the sensor mounting bracket 28 and the formation spacing width of the two notch mounting grooves 36 formed in the bolt mounting portion 34 are set to be the same width. ing. As a result, the stroke sensor 30 can be attached to the stud bolt 32 via the bolt attachment portion 34. The attachment is performed from the direction orthogonal to the axial direction of the stroke sensor 30 of the stud bolt 32, the details of which will be described later.

Since the stroke sensor 30 detects the rotation of the pedal arm 12, the stroke sensor 30 and the pedal arm 12 are linked to each other. FIG. 6 shows the link connection mechanism. As shown in FIG. 6, the L-shaped link 38 is attached to the central portion of the stroke sensor 30, and the other end of the L-shaped link 38 is fixed to the pedal arm main body 14 and arranged in the concave groove 40 of the fixing member 39. Is engaged in. As a result, the rotation of the pedal arm 12 is transmitted to the stroke sensor 30 and detected.

As shown in FIGS. 1 and 4, since the L-shaped link 38 is arranged so as to straddle the right pedal bracket 20R, a communication hole 42 is formed in the right pedal bracket 20R. The L-shaped link 38 is arranged through the communication hole 42 so that the rotation of the pedal arm 12 is transmitted to the stroke sensor 30.

Further, the portion formed at the upper position of the stroke sensor 30 is the connector portion 44, which is a portion for transmitting the detection information of the stroke sensor 30 to the control unit by electrical wiring.

<Guard member 46>
Next, the guard member 46, which is another configuration characteristic of the present embodiment, will be described. The guard member 46 is well shown in FIG. The guard member 46 is a member generally also referred to as a "foot kick bracket" or a "kick-up protection bracket", and is for protecting the stroke sensor 30 from an abnormal external force operation. For example, it is intended to protect the driver when he / she accidentally kicks the stroke sensor 30 with his / her foot.

The guard member 46 is formed in an L shape and is composed of a main body portion 46A and a flange portion 46B. The main body portion 46A is a portion arranged on the lower peripheral surface of the stroke sensor 30. The flange portion 46B is a portion of the stroke sensor 30 arranged on the front surface side (the right side surface side of the stroke sensor 30 as seen in FIG. 4). The main body portion 46A and the flange portion 46B are made of steel plate and are integrally formed.

The guard member 46 is arranged so that the end surface on the opposite side of the L-shape of the main body portion 46A abuts on the side surface of the pedal arm main body 14, and the abutting points are joined and integrated by arc welding 48. .. As a result, the pedal arm 12 and the guard member 46 are integrated, and the guard member 46 rotates together with the pedal arm 12, but in the rotation range, it surrounds the lower portion and the front surface of the stroke sensor 30. It is in an arrangement state.

<How to attach the stroke sensor 30>
Next, how to attach the stroke sensor 30 characterized by this embodiment will be described. FIG. 7 shows a cross-sectional view taken along the line VII-VII of FIG. As shown in this cross-sectional view, the flange portion 46B of the guard member 46 is located on the front side (upper side when viewed in FIG. 7) of the stroke sensor 30. Therefore, even if an attempt is made to attach the stud bolt 32 fixedly to the sensor mounting bracket 28 from the axial direction of the stud bolt 32, the flange portion 46B of the guard member 46 becomes an obstacle and cannot be attached. FIG. 8 is a diagram for explaining this state. That is, as shown in FIG. 8, when the flange portion 46B of the guard member 46 is present, the front portion of the stroke sensor 30 is the flange portion of the guard member 46 in the position where the stud bolt mounting portion 34 is engaged with the stud bolt 32. It is in contact with 46B and cannot be attached to the stud bolt 32 from the axial direction.

Therefore, in the present embodiment, the bolt mounting portion 34 is opened in a direction orthogonal to the axis of the stud bolt 32, and a notched mounting groove 36 (see FIG. 9) through which the stud bolt 32 can be inserted is formed. Is. As a result, the stroke sensor 30 can be attached to the stud bolt 32 from a direction orthogonal to the axial direction of the stud bolt 32. That is, the flange portion 46B of the guard member 46 does not become an obstacle.

As shown in FIG. 7, after the bolt mounting portion 34 is attached to the stud bolt 32, the nut 50 is screwed into the stud bolt 32 to secure the bolt mounting portion 34 of the stroke sensor 30 to the sensor mounting bracket 28. Can be attached to.

<Action and effect of the above embodiment>
First, in the present embodiment, since the stroke sensor 30 is surrounded and protected by the guard member 46, it is possible to protect against an abnormal external force of kicking up from below the brake pedal device 10. In particular, in the present embodiment, the guard member 46 is formed in an L shape, and not only the lower portion of the stroke sensor 30 is protected by the main body portion 46A, but also the front portion of the stroke sensor 30 is protected by the flange portion 46B. It can be protected.

Next, the stroke sensor 30 can be attached to the stud bolt 32 from a direction orthogonal to the axial direction of the axis of the stud bolt 32. As a result, the flange portion 46B of the guard member 46 does not become an obstacle when the stroke sensor 30 is attached. This is because the notch mounting groove 36 formed in the bolt mounting portion 34 of the stroke sensor 30 is formed by opening in a direction orthogonal to the axis of the stud bolt 32.

Further, since the main body portion and the flange portion of the guard member 46 are formed in an L shape, the strength can be improved, so that the plate thickness can be reduced and the weight can be reduced. ..

<Another arrangement of the two notch mounting grooves 36>
FIG. 10 shows another arrangement of the two notched mounting grooves 36 formed in the stud bolt mounting portion 34 of the stroke sensor 30. In this other arrangement, the openings of the two notch mounting grooves 36 are in opposite directions. That is, the positions where the two notch mounting grooves 36 open are opposite to each other when viewed in a direction orthogonal to the axis of the stud bolt 32. As seen in FIG. 10, the notch mounting groove 36 on the left side is open upward, and the notch mounting groove 36 on the right side is open downward. The opening in the opposite direction is the opening in the direction opposite to the tightening torque direction (arrow direction indicated by the virtual line) of the nut 50 (see FIG. 7) at the time of mounting. That is, both of the two notch mounting grooves 36 are opened so that the groove bottom of the notch mounting groove 36 is pressed against the stud bolt by tightening the nut 50. As a result, the stroke sensor 30 is rotated by the nut tightening torque, and the assembly position accuracy is stabilized by the interference between the inner wall of the notch mounting groove 36 and the stud bolt 32.

<Another shape form of the notch mounting groove 36>
FIG. 11 shows a modified example of the shape of the notch mounting groove 36 formed in the stud bolt mounting portion 34 of the stroke sensor 30. In the modification, the shape of the notch mounting groove 36 is tapered. The tapered shape is a tapered shape with a wide opening and a narrow depth. That is, it has a tapered shape in which the groove width gradually expands from the groove bottom toward the groove opening. With such a tapered shape, the notch mounting groove 36 can be easily assembled and inserted into the stud bolt 32.

<Other embodiments>
Although the specific embodiment of the present invention has been described above, the present invention can also be carried out in various other embodiments.

For example, the vehicle pedal device of the above embodiment is the case of a vehicle brake pedal device. However, it can also be widely applied to other pedal devices in vehicles. For example, it can be applied to a clutch pedal device, an accelerator pedal device, and the like.

Further, the manipulated variable sensor in the above embodiment was the stroke sensor 30. In addition, it may be a load sensor that detects the operating load of the operating pedal.

Further, the pedal arm main body 14 in the above embodiment is the case of one plate-shaped member. It may be formed in a hollow shape.

Further, the link connection configuration for connecting the stroke sensor 30 and the pedal arm 12 in the above embodiment is a configuration using an L-shaped link 38. This link connection configuration may be various well-known link connection configurations.

<Actions and effects of each invention described in "Means for Solving Problems">
Finally, the operation and effect of the above-described embodiment corresponding to each invention in the above-mentioned "means for solving the problem" will be added.

First, according to the first invention, the stud bolt mounting portion in the operation amount sensor is opened in a direction orthogonal to the axial direction of the stud bolt, and the stud bolt can be inserted in the orthogonal direction. A notch mounting groove is formed. Thereby, the manipulated variable sensor can be attached to the stud bolt from the direction orthogonal to the axial direction of the stud bolt.

Further, according to the first invention, as a result of the above, the guard member attached to the pedal arm can be formed to have a flange portion covering the axial front side of the stud bolt. As a result, it is possible to protect the operation amount sensor against an abnormal external force operation from the front side in the axial direction of the stud bolt.

Next, according to the second invention, the flange portion of the guard member is formed in an L shape with the main body portion that covers the lower portion of the manipulated variable sensor in the guard member. As a result, the external force from below the manipulated variable sensor is protected by the main body of the guard, and the external force from the side (the front side in the axial direction of the stud bolt) is protected by the flange of the guard member. To.

Next, according to the third invention, two notch mounting grooves formed in the stud bolt mounting portion of the manipulated variable sensor are formed, and the position where the two notch mounting grooves open is the stud. The directions are opposite to each other when viewed in the direction orthogonal to the axis of the bolt. As a result, the operation amount sensor rotates due to the nut tightening torque, and the assembly accuracy is stabilized by the interference between the inner wall of the notch mounting groove and the stud bolt.

Next, according to the fourth invention, the notch mounting groove through which the stud bolt is inserted is formed in a tapered shape. As a result, the stud bolt can be easily inserted into the notch mounting groove, and assembly is easy.

Next, according to the fifth invention, it can be suitably carried out for a vehicle brake pedal device.

10 Brake pedal device (vehicle operation pedal device)
12 Pedal arm (operation pedal)
14 Pedal arm body 16 Pedal tread 18 Boss 20 Pedal bracket 20R Right pedal bracket 20L Left pedal bracket 22 Dash panel 26 Support shaft 27 Circular hole 28 Sensor mounting bracket 28a Leg 30 Stroke sensor (operation amount sensor)
32 Stud bolt 34 Stud bolt mounting part 36 Notch mounting groove 38 L-shaped link member 40 Concave groove 42 Communication hole 44 Connector part 46 Guard member 46A Main body part 46B Flange part 48 Arc welding 50 Nut

Claims (5)

The operation pedal device for a vehicle includes a pedal bracket attached to the vehicle body and an operation pedal pivotally supported by the pedal bracket and rotatably attached, and an operation amount for detecting information on the operation amount of the operation pedal. It is an operation amount sensor mounting structure in which the sensor is mounted on the sensor mounting bracket integrally disposed on the pedal bracket.
A stud bolt for mounting the operation amount sensor is arranged on the sensor mounting bracket in the same direction as the axial support direction of the operation pedal.
A notched mounting groove is formed in the stud bolt mounting portion of the manipulated variable sensor so as to open in a direction orthogonal to the axis of the stud bolt and allow the stud bolt to be inserted.
Further, a guard member for protecting the operation amount sensor from an abnormal external force operation is arranged on the pedal arm of the operation pedal.
The guard member has an operation amount sensor mounting structure in a vehicle operation pedal device having a configuration capable of covering the operation amount sensor on the axial front side and the lower peripheral surface of the stud bolt to which the operation amount sensor is attached. The operation amount sensor mounting structure in the operation pedal device for a vehicle according to claim 1.
The guard member is formed in an L shape with a main body portion arranged on the lower peripheral surface of the manipulated variable sensor and a flange portion disposed on the front side in the axial direction of the manipulated variable sensor. , Operation amount sensor mounting structure in the operation pedal device for vehicles. The operation amount sensor mounting structure in the operation pedal device for a vehicle according to claim 1 or 2.
Two notch mounting grooves are formed in the stud bolt mounting portion of the operation amount sensor, and the position where the two notch mounting grooves open is viewed in a direction orthogonal to the axis of the stud bolt. The operation amount sensor mounting in the operation pedal device for vehicles, which is oriented in opposite directions to each other and has an opening so that the bottom of the notch mounting groove is pressed against the stud bolt by tightening the nut at the time of mounting. Construction. The operation amount sensor mounting structure in the operation pedal device for a vehicle according to any one of claims 1 to 3.
The notch mounting groove is an operation amount sensor mounting structure in a vehicle operation pedal device formed in a tapered shape in which the groove width gradually widens from the groove bottom to the groove opening. The operation amount sensor mounting structure in the operation pedal device for a vehicle according to any one of claims 1 to 4.
The operation pedal device for a vehicle is a brake pedal device for a vehicle, and has an operation amount sensor mounting structure in the operation pedal device for a vehicle.

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