JP3869665B2 - Resin pedal rod connection structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a resin pedal that is integrally formed of a resin material, and more particularly to an improvement in a connection structure with a connection rod.
[0002]
[Prior art]
It is integrally formed of a resin material and is disposed so as to be rotatable around one rotation axis, and is connected to a predetermined connecting rod disposed in a plane substantially perpendicular to the one rotation axis. Resin pedals that are rotated about one rotation axis by stepping on the stepping portion to displace the connecting rod in the axial direction are used, for example, as clutch pedals and brake pedals of automobiles. The connecting rod is a push rod of a clutch master cylinder or an operating rod of a brake booster. Such a connection structure between the resin pedal and the connecting rod includes, for example, an insertion hole 100h provided in the U-shaped resin pedal 100 and an insertion hole provided in the connection rod 102, as shown in FIG. The connecting pin 104 is disposed through 102h, and the β pin 106 is inserted into the tip to prevent the connecting pin 104 from coming off, thereby enabling relative rotation around the axis of the connecting pin 104 parallel to the one rotation axis. It is common to connect.
[0003]
[Problems to be solved by the invention]
However, in such a rod connection structure, with the resin pedal disposed in the vehicle so as to be rotatable about one rotation axis, the connection pin is inserted by matching the insertion holes of the resin pedal and the connection rod by hand. Since it is necessary to pass through and attach the β pin to the tip of the connecting pin, the assembly work is troublesome and time consuming, and those connecting pins and β pins are necessary and the number of parts is large. There was a problem of high costs.
[0004]
The present invention has been made against the background of the above circumstances, and its object is to simplify the connecting structure between the resin pedal and the connecting rod to reduce the number of parts, and to facilitate the connecting work. The goal is to be able to do it quickly.
[0005]
[Means for Solving the Problems]
In order to achieve such an object, the first invention is formed integrally with a resin material and is disposed so as to be rotatable around one rotation axis, and in a plane substantially perpendicular to the one rotation axis. In a resin pedal that is connected to a predetermined connecting rod disposed in the shaft and is rotated about its one rotation axis by stepping on the stepping portion, and the connecting rod is displaced in the axial direction (a The head of the connecting rod is provided with a head, and a shaft having a smaller diameter than the head is provided in front of the head, while (b) the resin pedal includes ( b-1) While provided with a head insertion space capable of inserting the head between the pedal body, A slit having a width that is larger than the shaft portion of the connecting rod and smaller than the head portion is provided so as to intersect the axis of the connecting rod, and at least one of the longitudinal ends of the slit. Is at the end of the slit so as to be continuous with the opening of the head insertion space. An opening is provided, The end of the slit so that the head enters the head insertion space. Inserted into the slit from the opening Above A first positioning part for positioning the shaft part; (b-2) a second positioning part for positioning the connecting rod at a predetermined connecting position in the longitudinal direction of the slit; and (b-3) at the connecting position. An output engaging portion that is engaged with the positioned connecting rod and transmits a stepping operation force to the connecting rod is provided integrally.
[0006]
2nd invention is the rod connection structure of the resin pedal of 1st invention, (a) The said 2nd positioning part is substantially V-shape formed so that the said output engaging part might become a valley bottom in the longitudinal direction of the said slit. The connecting rod is positioned at the output engaging portion which is the valley bottom of the recess by the movement resistance of the connecting rod during the depression operation of the resin pedal, and (b) the connecting rod is The rod return means is always urged in the return direction opposite to the moving direction when the resin pedal is depressed, and when the resin pedal is not depressed, the second positioning portion of the second positioning portion is urged according to the urging force of the rod return means. The connecting rod is positioned on the output engaging portion by the action.
[0007]
According to a third aspect of the present invention, in the rod connection structure for a resin pedal according to the first or second aspect of the invention, (a) the connection rod is a push-type connection rod pressed in the axial direction from the head side; b) the output engaging portion Said Provided in the pedal body, Above (C) the pedal body is connected to the head of the connecting rod when the shaft portion of the connecting rod is inserted into the slit. A guide surface that is engaged and guided to the connection position side is provided continuously to the output engagement portion, and the guide surface functions as the second positioning portion, and (d) The first positioning portion is provided with a recess in a portion that is engaged with the head portion when the resin pedal returns and is turned, and the head portion is provided with the slit. End It is characterized by preventing escape to the opening side.
[0008]
According to a fourth aspect of the present invention, in the rod connection structure for a resin pedal according to the third aspect, (a) the slit of the first positioning portion is provided in a substantially straight line in a direction substantially perpendicular to the one pivot axis; (b) In the connected state in which the connecting rod is held at the connecting position where the connecting rod engages with the output engaging portion, the guide surface is within a plane substantially perpendicular to the one rotation axis provided with the slit. The resin pedal is provided so as to intersect the axis of the connecting rod at an acute angle over the entire depression stroke of the resin pedal.
[0009]
According to a fifth aspect of the present invention, in the resin pedal rod coupling structure according to the third or fourth aspect of the present invention, the distal end of the head of the coupling rod forms a convex partial spherical shape, and the output engagement portion includes: A concave partial spherical surface having substantially the same curvature as that of the partial spherical surface of the head is formed so as to be brought into substantially surface contact.
[0010]
【The invention's effect】
In such a rod connection structure of a resin pedal, So that the head enters the head insertion space 1st positioning part slit That slit from the opening at the end of the If the shaft portion of the connecting rod is inserted into the connecting rod, the connecting rod is positioned at a predetermined connecting position by the second positioning portion, and is engaged with the output engaging portion so that the stepping operation force is transmitted to the connecting rod. Therefore, the operation of connecting the connecting rod to the resin pedal can be performed easily and quickly, and the conventional connecting pin and β pin are not required and are configured simply and inexpensively.
[0011]
In the second invention, the second positioning portion is constituted by a substantially V-shaped recess formed so that the output engagement portion becomes a valley bottom in the longitudinal direction of the slit. While the connecting rod is favorably positioned at the output engagement portion that is the bottom of the recess by the movement resistance, the connecting rod is always urged in the return direction by the rod return means, so at the time of non-depressing operation of the resin pedal, The connecting rod is positioned at the output engagement portion by the action of the second positioning portion in accordance with the urging force of the rod return means. Therefore, the engagement state between the connecting rod and the output engagement portion is favorably maintained regardless of whether or not the resin pedal is depressed.
[0012]
The third invention is a push type in which the connecting rod is pressed in the axial direction from the head side, and the output engaging portion is provided on the pedal body so as to be brought into contact with the tip of the head of the connecting rod. Therefore, the strength required for transmission of the stepping operation force can be easily secured. In addition, a guide surface is provided continuously to the output engaging portion, and the shaft portion is engaged with the head of the connecting rod inserted into the slit and guided to the connecting position side. The connecting operation can be performed more easily. Further, the first positioning portion is provided with a recess in a portion that is engaged with the head portion when the resin pedal returns and rotates, and the head portion has a slit. End Since the escape to the opening side is prevented, there is no possibility that the connecting rod is detached from the resin pedal.
[0013]
In the fourth invention, since the slit of the first positioning portion is provided in a substantially straight line in a direction substantially perpendicular to the one rotation axis, the connecting rod and the resin pedal are used with the output engaging portion as a fulcrum when the resin pedal is depressed. Are allowed to rotate relative to each other, and the first positioning portion and the connecting rod are prevented from interfering with each other. Further, since the guide surface is provided so as to intersect the axis of the connecting rod at an acute angle throughout the entire depression stroke of the resin pedal, the connecting rod smoothly guides to the connecting position side according to the guide surface during the connecting operation. In addition, in the connected state, the connecting rod is securely held at the connected position, and the engaged state with the output engaging portion is maintained well.
[0014]
In the fifth aspect of the present invention, the front end of the connecting rod has a convex partial spherical shape, and the output engagement has a concave partial spherical shape having substantially the same curvature as the partial spherical surface of the head. Since the surface of the connecting rod is substantially in surface contact, there is no restriction on the phase around the axis of the connecting rod, the connecting operation is further facilitated, wear is suppressed, and excellent durability is obtained.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
The present invention is preferably applied to a clutch pedal and a brake pedal of an automobile. For example, the upper end portion is disposed so as to be rotatable about one rotation axis, and the step portion provided at the lower end portion is depressed. However, the present invention can also be applied to other vehicle pedals such as an accelerator pedal and a parking brake pedal, and pedals other than the vehicle.
[0016]
The connecting rod is a push rod of a clutch master cylinder, an operating rod of a brake booster, etc., and is connected to an intermediate position between, for example, one rotation axis and a tread, and is pressed in the axial direction. It is also possible to connect to the side opposite to the stepping part with the heart sandwiched, or to be pulled to the head side with the stepping operation. The head of the connecting rod is larger than the width of the slit, but it is not necessary to enlarge the entire head. The head is composed of a large diameter part such as a flange and a contact part such as a hemisphere smaller in diameter than the large diameter part. Various modes are possible depending on the form of connection with the resin pedal, such as configuring the part. The connecting rod can be swung or bent in a predetermined angle range, for example, and can be inserted into the slit.
[0017]
The resin pedal is basically integrally formed of a resin material, but it is partially subjected to post-processing such as cutting, or an insert member such as metal is embedded in a part of the output engagement portion or the like. It is also possible. You may make it arrange | position later the seating plate comprised separately in the output engaging part. The slit of the first positioning portion and the partially spherical output engaging portion (the fifth invention) can be integrally formed by using a gathering die or the like, but may be formed by cutting after forming. good.
[0018]
The resin pedal may be returned and rotated by the engagement between the connecting rod and the output engaging portion as the connecting rod moves in the return direction, but the return spring or the turn locked to the resin pedal itself may be used. It may be returned and rotated by pedal return means such as an over device. The connecting rod can be moved in the returning direction as the resin pedal returns and rotates.
[0019]
In the case of a push-type rod, the output engaging portion is preferably provided on the pedal body and brought into contact with the tip of the connecting rod as in the third aspect of the invention, for example, but the shaft portion of the connecting rod has a partially reduced diameter. In the case of the neck portion, an output engaging portion can be provided in the first positioning portion to engage with the connecting rod. In the case of a pull type that pulls the connecting rod during the stepping operation, an output engagement portion may be provided in the first positioning portion so as to be engaged with the head.
[0020]
In the second invention, the second positioning portion is configured by a recess having a substantially V shape, but a rectangular recess or the like may be employed as the second positioning portion. One side wall of the V-shaped recess, that is, the slit into which the connecting rod is inserted End The side wall opposite to the opening may have a relatively steep slope so as to engage the connecting rod and prevent further movement. Slit End It is also possible to close the end opposite to the opening side (rod insertion side) and define the connecting position of the connecting rod by the slit. In other words, the first positioning unit may have a partial function of the second positioning unit.
[0021]
Head insertion space provided continuously at the opening at the end of the slit As long as at least the head of the connecting rod can be inserted, the opening may be simply made by increasing the width of the slit.
[0022]
The rod return means for the connecting rod of the second invention is, for example, a return spring such as a compression coil spring built in a brake booster, or the hydraulic pressure of a hydraulic cylinder such as a clutch master cylinder.
[0023]
In the third invention, assuming that the first positioning portion and the head are engaged when the resin pedal returns and rotates, the first positioning portion is provided with a recess. When the engagement state between the head portion of the connecting rod and the output engagement portion is constantly maintained, such as when the resin pedal is returned and rotated by the movement of the first position, it is not necessary to provide the recess in the first positioning portion. .
[0024]
In the fourth invention, the slit of the first positioning portion is provided in a substantially straight line in a direction substantially perpendicular to the one rotation axis, but the slit of the first positioning portion is provided substantially parallel to the one rotation axis, It is also possible to insert a connecting rod into the slit from the side of the resin pedal, and to allow relative displacement when the resin pedal is stepped on, a wide part is provided in the slit as necessary, or an L-shape For example, a slit that is bent may be adopted.
[0025]
In the fourth aspect of the invention, the guide surface is provided so as to intersect the axis of the connecting rod at an acute angle over the entire stepping stroke of the resin pedal in a plane substantially perpendicular to the one rotation axis provided with the slit. However, it is desirable to form the pair of side walls of the V-shaped recess of the second invention in the same manner as the guide surface of the fourth invention.
[0026]
In the fifth invention, the head of the connecting rod and the output engaging portion are partially spherical, but a saddle-shaped (partial cylindrical shape) head and output engaging portion that are parallel to one pivot axis are adopted. You can also
[0027]
【Example】
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a side view in which a part of a clutch pedal 10 for an automobile to which the present invention is applied is omitted. The clutch pedal 10 is integrally formed of a synthetic resin material and has a support shaft (not shown) at the upper end. 1 is provided with a cylindrical support portion 12 that is rotatably attached around one rotational axis O, and a step portion 14 that is depressed by a driver is provided at the lower end. It is rotated clockwise about one rotation axis O. A protrusion 16 for turnover assembly is provided in the vicinity of the support portion 12, and a turnover device is disposed between the bracket and the bracket that is integrally provided on the vehicle body, and the protrusion 16 sandwiching the support portion 12. An attachment seat 18 for attaching a stopper is provided on the opposite side to the stopper 20 so that a stopper 20 (see FIG. 3B) made of an elastic material such as rubber is attached. Then, when the stopper 20 is brought into contact with the bracket, the original position (return position) of the clutch pedal 10 is defined.
[0028]
Further, a rod connecting portion 22 is provided between the support portion 12 and the stepping portion 14 and in the vicinity of the support portion 12, and is a plane substantially perpendicular to the one rotation axis O (parallel to the paper surface of FIG. 1). The push rod 24 of the clutch master cylinder disposed in the plane), and the stepping portion 14 is depressed to rotate the clutch pedal 10 clockwise about the one rotation axis O. When pushed, the push rod 24 is pushed along the axis L in the axial direction which is the lower left direction in FIG. The push rod 24 is always urged in the protruding direction, that is, the return direction by the hydraulic pressure of the clutch master cylinder that functions as the rod return means, and when the stepping operation is released, the hydraulic pressure of the push rod 24 protrudes in the upper right direction in FIG. The clutch pedal 10 is returned and rotated counterclockwise about one rotation axis O. The clutch pedal 10 is urged toward the original position in the angle range from the original position to a certain turnover position (thought point) by the turnover device, but when it exceeds the turnover position, the clutch pedal 10 is urged toward the stepping side. If the push rod 24 is rotated back to the turnover position by the push rod 24, it is quickly returned to the original position by the action of the turnover device. That is, the turnover device functions as pedal return means for the clutch pedal 10 between the turnover position and the original position. In this embodiment, the clutch pedal 10 corresponds to a resin pedal, and the push rod 24 corresponds to a push-type connecting rod that is pressed in the axial direction from the tip side.
[0029]
2A is a longitudinal sectional view in the vicinity of the rod connecting portion 22, that is, a sectional view of a portion perpendicular to one rotation axis O and equal to the position where the push rod 24 is disposed, and FIG. ), A head 26 is provided at the tip of the push rod 24, and a shaft 28 having a smaller diameter than the head 26 is provided in front of the head. These are connected to the rod connecting portion 22 by the head portion 26 and the shaft portion 28. The head portion 26 includes a large-diameter portion 26a having a diameter larger than that of the shaft portion 28, and a hemispherical contact portion 26b having a diameter substantially the same as the diameter of the shaft portion 28, and the contact portion 26b at the tip end. Is brought into contact with the main body 30 of the clutch pedal 10 substantially perpendicularly so that the stepping operation force is transmitted. The main body 30 is provided with an output engaging portion 32 having a concave partial spherical shape having substantially the same curvature as that of the contact portion 26b, and is brought into surface contact with the contact portion 26b. Yes. The main body portion 30 corresponds to a pedal main body, and the surface of the hemispherical contact portion 26b corresponds to a convex partial spherical surface.
[0030]
On the other hand, the rod connecting portion 22 on the clutch pedal 10 side includes a flat plate-like first positioning portion 34 provided integrally with the main body portion 30 so as to intersect with the axis L of the push rod 24 in the connected state. The first positioning portion 34 is provided with a slit 36 having a width that is larger than the shaft portion 28 of the push rod 24 and smaller than the large-diameter portion 26a. The first positioning portion 34 can insert the head portion 26 between the main body portion 30 and the first positioning portion 34. Head insertion On the other hand, the slit 36 is provided in a straight line so as to intersect the axis L of the push rod 24 in a direction substantially perpendicular to the one rotation axis O, while being provided with a space therebetween. Head insertion The shaft portion 28 inserted into the slit 36 from the opening 36a on the one rotation axis O side is positioned in the slit 36 so that the head portion 26 enters the space. The push rod 24 can swing within a predetermined angle range with respect to the axis of the clutch master cylinder, and is inclined toward the one rotation axis O while being pushed into the clutch master cylinder as shown in FIG. As shown in FIG. 3B, the push rod 24 is turned back as shown by an arrow B while the clutch pedal 10 is turned in the depression direction as shown by an arrow A. The shaft portion 28 can be inserted into the shaft. In the connected state shown in FIGS. 1 and 3B, that is, in the state where the head 26 is engaged with the output engaging portion 32, the push rod 24 is held substantially coaxially with the axis of the clutch master cylinder.
[0031]
The first positioning portion 34 is recessed in a portion engaged with the head 26 when the clutch pedal 10 is turned back to the original position by the turnover device, that is, a surface on the main body portion 30 side. 38 is provided, and the engagement prevents the head 26 from escaping to the opening 36a side of the slit 36.
[0032]
The rod connecting portion 22 also has a second positioning portion 40 for positioning the push rod 24 at a predetermined connecting position in the longitudinal direction of the slit 36, that is, a position where the head portion 26 engages with the output engaging portion 32. Is provided. That is, as is clear from FIGS. 2A and 2B, the slit 36 is provided at the same position as the output engagement portion 32 in the direction parallel to the one rotation axis O. The second positioning portion 40 is formed in a plane substantially perpendicular to the one rotation axis O provided with the slit 36, that is, on the paper surface of FIGS. 2 (a), 3 (a) and 3 (b). A recess having a substantially V shape formed in the main body portion 30 so that the output engagement portion 32 becomes a valley bottom in the longitudinal direction. The head 26 is positioned at a certain output engaging portion 32. Further, since the push rod 24 is urged in the protruding direction by the hydraulic pressure of the clutch master cylinder as shown by the arrow C in FIG. 3B, the clutch pedal 10 is held in the original position during the non-depressing operation. Even in the state, the push rod 24 is positioned at the output engagement portion 32 by the hydraulic pressure, and the engagement state is maintained. In the state where the push rod 24 is connected to the rod connecting portion 22 as shown in FIG. 3B, the clutch pedal 10 is provided with a stopper 20 on the mounting seat 18 so that its original position is defined. In this position, the push rod 24 is pressed against the output engaging portion 32 by the hydraulic pressure of the clutch master cylinder.
[0033]
In the state shown in FIG. 3A before the stopper 20 is mounted, that is, in a state where the stopper 20 is further rotated by a predetermined amount from the original position, the push rod 24 is tilted and inserted into the slit 36 or slit. 3, but in the state of FIG. 3B in which the stopper 20 is attached and positioned at the original position, and in the state where the stepping operation is further performed from the original position, the head 26 of the push rod 24. The position and shape of the first positioning part 34 can also be set so that the first positioning part 34 cannot be separated from the slit 36 due to interference with the first positioning part 34.
[0034]
One side wall of the recess of the second positioning portion 40, that is, the side wall 42 closer to the one rotation axis O than the output engagement portion 32 is inserted when the shaft portion 28 of the push rod 24 is inserted into the slit 36. It has a length dimension that can be engaged with the tip of the head 26, and is provided at an inclination angle that slides the head 26 toward the output engaging portion 32 that is the coupling position, and functions as a guide surface. It has become. Further, in a connected state in which the push rod 24 is held at a connecting position where the push rod 24 engages with the output engaging portion 32, the side wall 42 is in a plane substantially perpendicular to the one rotation axis O provided with the slit 36, that is, On the paper surface of FIG. 3 (b), the crossing angle θ with the axis L of the push rod 24 is provided to be an acute angle over the entire depression stroke of the clutch pedal 10, and the push rod 24 is also depressed during the depression operation. The engagement state between the head 26 and the output engagement portion 32 is reliably maintained by the pushing resistance. The other side wall 44 of the recess of the second positioning portion 40 is provided so as to rise continuously to the slit 36 side of the output engagement portion 32, and the output engagement portion 32 where the push rod 24 is the connection position is provided. It is designed to prevent it from moving to the opposite side.
[0035]
In such a clutch pedal 10, as shown in FIG. 3A, the push rod 24 is inclined and the head portion 26 is slidably contacted with the side wall 42, and the shaft portion 28 of the push rod 24 is moved to the first positioning portion. 34, the push rod 24 is guided to the side wall 42 to be moved to the output engaging portion 32 side which is the connecting position, and the second positioning portion 40 having the side walls 42 and 44 outputs it. Since it is positioned at the engaging position with the engaging portion 32, the operation of connecting the push rod 24 to the clutch pedal 10 can be performed easily and quickly, and the connecting pin 104 and β pin 106 shown in FIG. Simple and inexpensive.
[0036]
Further, since the second positioning portion 40 is a substantially V-shaped recess formed so that the output engaging portion 32 becomes a valley bottom in the longitudinal direction of the slit 36, the push rod 24 is operated when the clutch pedal 10 is depressed. The push rod 24 is positioned well in the output engagement portion 32 that is the valley bottom of the recess by the pushing resistance of the depression, while the push rod 24 is pushed by the output engagement portion 32 by the hydraulic pressure of the clutch master cylinder during the non-depression operation. Positioning is performed, and the engagement state between the push rod 24 and the output engagement portion 32 is well maintained regardless of whether the clutch pedal 10 is depressed.
[0037]
Further, since the output engagement portion 32 with which the push rod 24 is brought into contact is provided in the main body portion 30, the strength necessary for transmitting the stepping operation force can be easily ensured.
[0038]
Further, a side wall 42 is provided continuously to the output engaging portion 32, and the shaft portion 28 is engaged with the head portion 26 of the push rod 24 inserted into the slit 36 and guided to the connecting position side. Therefore, the connecting operation can be performed more easily.
[0039]
Further, the first positioning portion 34 is provided with a recess 38 in a portion that is engaged with the head portion 26 when the clutch pedal 10 is returned and rotated, and the head portion 26 is prevented from escaping to the opening 36 a side of the slit 36. Therefore, there is no possibility that the push rod 24 is detached from the rod connecting portion 22 of the clutch pedal 10 even during the return rotation.
[0040]
Further, since the slit 36 of the first positioning portion 34 is provided in a straight line in a direction substantially perpendicular to the one rotation axis O, the push engagement member 32 is used as a fulcrum when the clutch pedal 10 is depressed. Relative rotation of the clutch pedal 10 is permitted, and interference between the first positioning portion 34 and the push rod 24 is prevented.
[0041]
Further, since the side wall 42 functioning as a guide surface is provided so as to intersect the axis L of the push rod 24 at an acute angle over the entire depression stroke of the clutch pedal 10, the push rod 24 is connected to the side wall 42 at the time of connection work. As a result, the push rod 24 is securely held at the connection position in the connected state, and the state of engagement with the output engagement portion 32 is well maintained.
[0042]
The tip of the head 26 of the push rod 24, that is, the abutting portion 26b has a convex hemispherical shape, and has a concave partial spherical shape with substantially the same curvature as the abutting portion 26b. Since the surface is brought into surface contact with the output engagement portion 32, the phase around the axis L of the push rod 24 is not restricted, the connection work is further facilitated, and wear of the output engagement portion 32 is suppressed. Excellent durability.
[0043]
Note that such a clutch pedal 10 is basically integrally formed of a resin material, and the undercut portions such as the slit 36 of the first positioning portion 34 and the partial spherical output engaging portion 32 are also close to each other. However, it may be formed by cutting after molding.
[0044]
As mentioned above, although the Example of this invention was described in detail based on drawing, this is an embodiment to the last, and this invention implements in the aspect which added various change and improvement based on the knowledge of those skilled in the art. Can do.
[Brief description of the drawings]
FIG. 1 is a side view in which a part of a clutch pedal to which the present invention is applied is omitted.
2 is a view showing the vicinity of a rod connecting portion of the clutch pedal in FIG. 1, wherein (a) is a longitudinal sectional view perpendicular to one rotation axis O, and (b) is a sectional view taken along line BB in (a). It is.
3 is a diagram for explaining a procedure when a push rod is connected to the clutch pedal of FIG. 1, and corresponds to (a) of FIG. 2;
FIG. 4 is a cross-sectional view illustrating an example of a conventional rod coupling structure.
[Explanation of symbols]
10: Clutch pedal (resin pedal) 14: Step part 22: Rod connecting part 24: Push rod (connecting rod) 26: Head 28: Shaft part 30: Body part (Pedal body) 32: Output engaging part 34: No. 1 Positioning part
36: Slit 36a: Opening (opening at the end of the slit) 38: Recess 40: Second positioning portion (recess) 42: Side wall (guide surface) O: One rotation axis

Claims (5)

It is integrally molded with a resin material and is disposed so as to be rotatable around one rotation axis, and is connected to a predetermined connecting rod disposed in a plane substantially perpendicular to the one rotation axis, In the resin pedal which is rotated around the one rotation axis by stepping on the stepped portion and displaces the connecting rod in the axial direction.
A head is provided at the tip of the connecting rod, and a shaft having a smaller diameter than the head is provided in front of the head,
In the resin pedal,
A slit having a width that is larger than the shaft portion of the connecting rod and smaller than the head is provided between the pedal body and a head insertion space into which the head can be inserted. together provided as to intersect the axis of the at least one longitudinal end of the slit, opening the ends of the slits are provided so as to be continuous to the opening of the head insertion space, head portion a first positioning portion for positioning the shank from the opening end is inserted into the slit of the slit so that the head enters the insertion space,
A second positioning portion for positioning the connecting rod at a predetermined connecting position in the longitudinal direction of the slit;
An output engaging portion that is engaged with the connecting rod positioned at the connecting position and transmits a stepping operation force to the connecting rod;
A rod connection structure for a resin pedal, characterized in that is integrally provided. The second positioning portion is a recess having a substantially V shape formed so that the output engaging portion is a valley bottom in the longitudinal direction of the slit, and the movement resistance of the connecting rod during the depression operation of the resin pedal While the connecting rod is positioned at the output engaging portion, which is the bottom of the recess,
The connecting rod is always urged by a rod return means in a return direction opposite to the movement direction when the resin pedal is depressed, and when the resin pedal is not depressed, the connecting rod is urged according to the urging force of the rod return means. The rod connecting structure for a resin pedal according to claim 1, wherein the connecting rod is positioned on the output engaging portion by the action of two positioning portions. The connecting rod is a push type connecting rod pressed in the axial direction from the head side,
While the output engagement portion the provided on the pedal body, it adapted to be brought into contact with the tip of the head of the connecting rod,
The pedal body has a guide surface that is engaged with the head portion of the connecting rod and guided to the connecting position side when the shaft portion of the connecting rod is inserted into the slit, and is continuous with the output engaging portion. And the guide surface functions as the second positioning portion,
The first positioning portion is provided with a recess in a portion that is engaged with the head portion when the resin pedal is turned back to prevent the head portion from escaping to the opening side of the end portion of the slit. The resin pedal connecting structure according to claim 1 or 2, wherein the connecting structure is a resin pedal. While the slit of the first positioning portion is provided in a substantially straight line in a direction substantially perpendicular to the one rotation axis,
In the coupled state in which the coupling rod is held at the coupling position where the coupling rod engages with the output engagement portion, the guide surface is disposed within the plane substantially perpendicular to the one rotation axis provided with the slit. 4. The resin pedal rod connection structure according to claim 3, wherein the rod connection structure of the resin pedal is provided so as to intersect the axis of the connection rod at an acute angle over the entire depression stroke of the pedal. The distal end of the head of the connecting rod has a convex partial spherical shape, and the output engagement portion has a concave partial spherical shape having substantially the same curvature as the partial spherical surface of the head. The rod connection structure for a resin pedal according to claim 3 or 4, wherein the rod contact structure is substantially surface-contacted.

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