JP2016181044A - Pedal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pedal device capable of reducing the energizing force of a lever part to a pivotally supporting side in an operation outward process.SOLUTION: A lever part 30 includes: a vertical part 31: and an extended part 32 extended from the vertical part 31 to a front part (operator side), and the extended part 32 is operated to be depressed with a foot 22. The lever part 30 is supported by a support post part 12 so as to be freely rotated with a rotation center C0 of a pivotally support part J as a center. Only a main contact area assumed to be contacted by a sole 22a in the depressing operation in the extended part 32 is coated such that a frictional coefficient becomes low. Thus, the main contact area has higher slip property than any area other than the main contact area.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pedal device in which a base part is placed on a floor surface or the like and a lever part is pressed with a foot.

  Conventionally, a general pedal device used for a keyboard instrument or the like has a base portion installed on a floor surface or the like as shown in Patent Document 1 below, and a tip of a rotatable lever portion is pressed with a foot. This is a configuration. During the performance, the player places the heel of the foot on the floor and rotates the foot using the position as a fulcrum.

  FIG. 4A is a schematic side view of a conventional pedal device. In the pedal device 110, a lever portion 112 is rotatable about a rotation fulcrum 113 with respect to the base portion 111. In FIG. 4A, the direction of the tip of the lever 112 is parallel to the floor surface 117 and viewed from the rotation fulcrum 113. The base part 111 is placed on the floor surface 117. The player places the heel of the foot 115 on the operation fulcrum 116 in front of the lever portion 112 on the floor surface 117 and moves the toe up and down. In operation, if the point of contact between the tip of the lever part 112 and the toe that is the tip of the sole 118 is a force point 114, the pressing force is transmitted to the lever part 112 via the force point 114 and the lever part 112 rotates. Move. When the foot 115 pivots upward, the lever portion 112 is returned to the initial position by a spring (not shown), and is in a non-operating state. In the initial position, the upper surface of the lever portion 112 is horizontal.

  4B and 4C are schematic diagrams showing the displacement of the force point 114 relative to the rotation fulcrum 113 and the displacement of the force point 114 relative to the operation fulcrum 116 in the stepping operation stroke. Here, the force point 114 is a contact point between the foot 115 and the lever portion 112, and actually the position changes at any time during the operation stroke. However, in order to analyze the locus of the force point 114 here, for each of the lever portion 112 and the foot 115, it is determined how the force point 114 at the position indicated by 114 in the non-operating state is displaced as it rotates. Think.

  As shown in FIG. 4B, the upper surface of the lever portion 112 in the initial position is horizontal, and the tip is inclined downward when pressed. Accordingly, the force point 114-a when the lever portion 112 is rotated to the end position of the rotation stroke is a position retracted by the displacement amount A in the direction away from the heel in the horizontal direction with respect to the force point 114 at the initial position. On the other hand, the inclination angle of the sole 118 with respect to the floor surface 117 is reduced by the pressing operation, and the force point 114-b when the lever portion 112 is rotated to the end position of the rotation stroke is the force point 114-b with respect to the initial position force point 114. The position is moved backward by the displacement amount B.

  As described above, the lever portion 112 changes from the horizontal state to the posture in which the front portion is inclined downward, whereas the sole 118 is not changed in the state in which the rear portion is inclined upward, and the inclination angle is only small. Therefore, the displacement amount B is larger than the displacement amount A. On the other hand, the position of the pivot fulcrum 113 is fixed, and the position of the operation fulcrum 116 is also almost unchanged. Therefore, at the force point 114, the sole 118 and the lever portion 112 are changed by the difference between the displacement amount A and the displacement amount B. Sliding occurs between the two.

JP 2008-090170 A

  However, since a frictional force acts between the sole 118 and the lever portion 112, as long as the operation fulcrum 116 is not changed, the rotation fulcrum 113 receives a biasing force through the force point 114 every time the stepping operation is performed. Become. Due to the urging force, the entire pedal device 110 is shifted backward. Since the pressing operation is fast, there is a problem that the apparatus repeatedly moves backwards little by little, and the positional deviation of the apparatus gradually increases by many operations. As a countermeasure against this, the apparatus is fixed to the floor surface with a gum tape or the like in the field, but this is not a preferable countermeasure. Further, although there is a configuration in which an anti-slip is provided on the lower surface of the base part, the effect is limited and the cost is high.

  The present invention has been made to solve the above-described problems of the prior art, and an object thereof is to provide a pedal device that can reduce the urging force of the lever portion toward the shaft support side in the operation forward stroke. is there.

  In order to achieve the above object, the pedal device according to claim 1 of the present invention includes a base portion (11) and an extending portion (32) extending to the operator side, and the extending portion is depressed. A lever portion (30) to be operated; and a support portion (12) that supports the lever portion so as to be rotatable about a rotation center (C0) with respect to the base portion. Among the extended portions, the slipperiness of the main contact region (S), which is the main region that can be assumed to be in contact with the foot during the pressing operation, is defined as a region that is not the main contact region in the extended portion. It is characterized by a higher price.

  In order to achieve the above object, a pedal device according to a second aspect of the present invention includes a base portion, an extension portion extended to the operator side, and a lever portion on which the extension portion is operated to be pressed. A support portion (12) that supports the lever portion so as to be rotatable about a rotation center (C0) with respect to the base portion, and the lever portion is pressed out of the extending portions of the lever portion. Regarding the slipperiness of the main contact region (S), which is the main region that can be assumed to be in contact with the foot during the operation, the slippage in the direction parallel to the axial direction of the rotation center (C0) is greater than the slipperiness. It is characterized in that the slipperiness in the direction perpendicular to the axial direction of the center of movement is increased.

  In order to achieve the above object, a pedal device according to a third aspect of the present invention includes a base portion, an extension portion extending to the operator side, and a lever portion that is operated to push down the extension portion. A support portion (12) for supporting the lever portion with respect to the base portion so as to be rotatable about a rotation center (C0), and a direction substantially parallel to an axial direction of the rotation center (C0). A roller (38, 40) that rotates about a rotation center (C1, C2) as an axial direction, and a foot can be in contact with the extended portion of the lever portion during a pressing operation. It is characterized in that at least one roller is provided in a main contact area (S) which is a main area assumed to be.

  In addition, the code | symbol in the said parenthesis is an illustration.

  According to the present invention, it is possible to reduce the urging force of the lever portion toward the shaft support side in the operation forward stroke.

It is a side view (figure (a)) of the pedal device concerning a 1st embodiment of the present invention, and a top view (figure (b)) of the rear part of the pedal device. Schematic plan view (figure (a)), front view (figure (b)), side view (figure (c)) of extension part, extension of pedal device according to the second embodiment of the present invention FIG. 3 is a schematic plan view (FIG. (D)) of the section, and a cross-sectional view (FIG. (E)) taken along line AA in FIG. 2 (d). The typical top view (figure (a)), side view (figure (b)) of the extension part of the pedal device concerning a 3rd embodiment of the present invention, the typical plane of the extension part in a modification It is a figure (figure (c)), a side view (figure (d)), and a mimetic diagram (figure (e)) which shows a lever part of a modification. FIG. 5 is a schematic side view (FIG. (A)) of a conventional pedal device, and schematic diagrams (FIGS. (B) and (c)) showing displacement of a power point with respect to a rotation fulcrum in a stepping operation stroke and displacement of the force point with respect to an operation fulcrum. .

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
1A and 1B are a side view of a pedal device according to the first embodiment of the present invention and a plan view of a rear portion of the pedal device, respectively. 1A and 1B, a part of the pedal device 10 is shown in cross section.

  The pedal device 10 is used as an operator for controlling an electronic device. There is no limitation in the electronic device used as the pedal device 10, and it can be applied to an electronic musical instrument, an acoustic device, a sewing machine, and the like. When applied to, for example, a keyboard instrument as an electronic musical instrument, the pedal device 10 is placed below the main body of the electronic keyboard instrument, and can be used as an operator for effect control. Alternatively, the pedal device 10 may be configured as a part of the electronic device. In the present embodiment, it is assumed that the pedal device 10 is applied to a keyboard instrument.

  The pedal device 10 mainly includes a base portion 11 and a lever portion 30. When the pedal device 10 is used, the base portion 11 is usually placed on a flat placement surface (the floor surface 20 in FIG. 1A). Is done. The lever part 30 is pressed by the foot 22 and may be called a pedal. Hereinafter, in a state where the pedal device 10 is placed on the floor surface 20, the front-rear direction is referred to and the operator (player) side (right side in FIG. 1A) is moved forward.

  The lever portion 30 includes a vertical portion 31 and an extending portion 32 extending forward (operator side) from the vertical portion 31 and is configured in an L shape in side view. An actuator 33 corresponding to the detection switch 15 is provided on the lower surface of the extending portion 32. A spring 14 is interposed between the base portion 11 and the extending portion 32 in a compressed state. The extension part 32 is always urged upward by the spring 14, and the extension part 32 abuts against the stopper part 13a, so that the initial position of the rotation operation of the extension part 32 in the non-operation state is regulated. In the non-operation state, the upper surface 32a of the extending portion 32 is substantially horizontal (parallel to the floor surface 20) when viewed from the side.

  From the rear part of the base part 11, a pair of support | pillar parts 12 arranged in parallel in the width direction are projected. A shaft support J is formed on the support column 12. The lever portion 30 is supported by the support column 12 so as to be rotatable about a rotation center C0 (FIG. 1B) in the shaft support portion J. A shaft member 17 extending in the width direction of the lever portion 30 is rotatably provided on the vertical portion 31 of the lever portion 30. A hole 18 is formed in each of the pair of support columns 12. Each hole 18 is formed concentrically such that the width direction of the lever portion 30 is the axial direction. The shaft member 17 may be fixed to the hole 18 by any method, or may be rotatable with respect to the hole 18. The shaft member 17 is inserted into the hole 18 to form the shaft support portion J.

  In front of the support column 12, the base unit 11 is provided with a pair of stopper columns 13 so as to sandwich the lever unit 30 from the width direction, and a stopper unit 13 a is provided so as to connect the upper portions of the pair of stopper columns 13. It has been. The pair of stopper struts 13 and the stopper portion 13a have a U shape. A detection switch 15 that detects the operation of the lever portion 30 is disposed on the base portion 11 in front of the stopper column 13.

  A lower limit stopper 16 is disposed at the front portion of the base portion 11. The lever portion 30 is rotated clockwise in FIG. 1A, and the lower surface of the extending portion 32 is brought into contact with the lower limit stopper 16, whereby the rotation end position in the forward travel of the lever portion 30 is regulated. The Therefore, the rotation range from the initial position where the extended portion 32 contacts the stopper portion 13 a to the rotation end position where the extended portion 32 contacts the lower limit stopper 16 is an operation stroke as the lever portion 30.

  When the detection switch 15 is pressed by the actuator 33 of the extending portion 32, the detection switch 15 is electrically connected, and the ON operation of the lever portion 30 is detected. The detection switch 15 is not particularly limited as long as it can detect at least an on / off operation of the lever portion 30. The detection switch 15 may be a volume switch that outputs a signal corresponding to the degree of pressing.

  The upper side of the distal end portion 32b of the extending portion 32 is a convex curved surface in a side view. The lever part 30 is operated by pressing the tip part 32b as an operated part. For the sake of convenience, it is assumed that the sole 22a (shoe sole) of the operator's foot 22 is flat, and the distal end portion 32b of the extending portion 32 is pressed near the toes of the sole 22a. At that time, the heel of the foot 22 is placed on the operation fulcrum K on the floor 20. The operation fulcrum K is a position on the opposite side across the tip 32b on the floor surface 20. By the stepping operation by the operator, the sole 22a rotates about the operation fulcrum K in the counterclockwise direction of FIG. A contact point P is a position in a side view, which is a force point at which the sole 22a and the distal end portion 32b are engaged during operation. However, the contact point P in the extended part 32 and the contact point P in the sole 22a can be changed in the operation stroke by sliding between the extended part 32 and the sole 22a.

  2A, 2 </ b> B, and 2 </ b> C are a schematic plan view, a front view, and a side view of the extending portion 32. The main area | region assumed that the sole 22a can contact in the case of pressing operation among the extending parts 32 is called the main contact area | region S. FIG. In the present embodiment, the slidability of the main contact region S in the extended portion 32 is made higher than that of a region that is not the main contact region S.

  First, the entire lever portion 30 is integrally formed of metal, and the surface of the extended portion 32 including the upper surface 32a of the extended portion 32 is plated as in the conventional case. However, only the main contact region S is coated so as to have a low coefficient of friction. As an example of this coating material, for example, a coating of high density polyethylene, fluorine, urethane or the like can be employed. However, the method of increasing the slipperiness of the main contact region S (decreasing the dynamic friction coefficient) is not limited to coating, and surface treatment for reducing surface roughness may be performed. Alternatively, two films that slide smoothly may be placed on the surface. Alternatively, rubber containing a lubricant may be employed on the surface. It should be noted that the slidability of the bottom surface of the base portion 11 in contact with the floor surface 20 should be as low as possible, and it is needless to say that the friction coefficient of the main contact region S is lower than the friction coefficient of the bottom surface of the base portion 11. .

  When the extending portion 32 is pressed, the main contact area S of the extending portion 32 and the sole 22a slide well. Therefore, as the forward stroke of the pressing operation proceeds, the contact point P approaches the shaft support portion J with respect to the extended portion 32 and approaches the operation support point K with respect to the sole 22a. Thereby, compared with the past, the force by which the extension part 32 is pushed to the shaft support part J side by the sole 22a in the operation forward stroke is weakened.

  Therefore, according to the present embodiment, the urging force of the lever portion 30 toward the shaft support side (the shaft support portion J side) in the operation forward stroke can be reduced, and the backward movement of the pedal device 10 can be suppressed.

  Even when the pedal device 10 is used in a state in which the pedal device 10 is fixed to a fixed portion such as a drum rack and does not move, the pedal device 10 can reduce the urging force of the lever portion 30 toward the shaft support side. There is an advantage that the structure for fixing the device 10 to the fixing portion can be simplified and inexpensive.

(Second Embodiment)
FIG.2 (d) is a typical top view of the extension part of the pedal apparatus which concerns on the 2nd Embodiment of this invention. FIG.2 (e) is sectional drawing which follows the AA line of FIG.2 (d). In the present embodiment, the slipperiness of the main contact region S is higher in the direction perpendicular to the axial direction of the rotation center C0 than in the direction parallel to the axial direction of the rotation center C0. doing. The axial direction of the rotation center C0 is the width direction (left-right direction) of the lever portion 30.

  Specifically, in the main contact region S, a plurality of grooves 36 substantially parallel to the front-rear direction in plan view are formed in parallel in the left-right direction. In addition, about the main contact area | region S, the process which makes the slipperiness of the main contact area S employ | adopted in 1st Embodiment used together is used. As a result, the sole 22a in contact with the main contact region S is easier to slide in the front-rear direction than in the left-right direction. By improving the slipperiness in the direction perpendicular to the axial direction of the rotation center C0, the urging force of the lever portion 30 toward the shaft support side (the shaft support portion J side) in the operation forward stroke is reduced.

  Therefore, according to the present embodiment, the same effects as those of the first embodiment can be obtained. In addition, while ensuring good sliding in the front-rear direction, it is difficult to slide in the left-right direction, so that the foot does not fall off to the side during operation, and operation is easy. Instead of the groove 36, a protrusion may be formed.

(Third embodiment)
In the first and second embodiments, attention is paid to sliding friction. In the third embodiment of the present invention, attention is paid to rolling friction, and the rolling friction coefficient of the main contact region S is lowered.

  FIGS. 3A and 3B are a schematic plan view and a side view of an extending portion of a pedal device according to the third embodiment of the present invention. In the present embodiment, one roller 38 is disposed in the main contact region S so that the sole 22 a contacts the surface of the roller 38. The roller 38 is pivotally supported by the extending portion 32 by a shaft portion 37 and is rotatable about a rotation center C1. The axial direction of the shaft portion 37 (rotation center C1) is substantially parallel to the axial direction of the rotation center C0.

  According to the present embodiment, since the roller 38 rotates in the operation forward stroke, the resistance that the sole 22a receives from the main contact region S in the extending direction of the extending portion 32 is reduced. Further, since the rotation direction of the roller 38 is determined, resistance in the front-rear direction is smaller than that in the left-right direction. Therefore, the same effects as those of the second embodiment can be obtained.

  As shown in FIGS. 3C and 3D, two or more rollers may be provided. FIGS. 3C and 3D are a schematic plan view and a side view of the extending portion in the modified example of the third embodiment. A plurality of rollers 40 are arranged in the main contact region S in parallel in the front-rear direction so that the sole 22 a contacts the surface of the roller 40. The rollers 40 are pivotally supported by the extending portion 32 by a shaft portion 39, and can be rotated about a rotation center C2. The axial direction of the shaft portion 39 (rotation center C2) is substantially parallel to the axial direction of the rotation center C0.

  By the way, in each said embodiment, although the lever part 30 was made into the side view L-shape, it is not restricted to this. For example, as shown in FIG. 3E, the lever portion 30 may have a linear shape without having a vertical portion.

  Although the present invention has been described in detail based on preferred embodiments thereof, the present invention is not limited to these specific embodiments, and various forms within the scope of the present invention are also included in the present invention. included. A part of the above-described embodiments may be appropriately combined.

  11 base part, 12 column part (support part), 30 lever part, 32 extension part, 38, 40 roller, S main contact area, C0, C1, C2 rotation center

Claims (3)

A base,
A lever portion extending to the operator side, wherein the extended portion is operated to be depressed;
A support portion that rotatably supports the lever portion with respect to the base portion around a rotation center;
Of the extended portion of the lever portion, the slipperiness of the main contact region, which is the main region assumed to be in contact with the foot during the pressing operation, is defined as a region that is not the main contact region of the extended portion. Pedal device characterized by being higher than A base,
A lever portion extending to the operator side, wherein the extended portion is operated to be depressed;
A support portion that rotatably supports the lever portion with respect to the base portion around a rotation center;
Of the extended portion of the lever portion, the slipperiness of the main contact region, which is the main region assumed to be in contact with the foot during the pressing operation, is in a direction parallel to the axial direction of the rotation center. A pedal device characterized in that the slipperiness in the direction perpendicular to the axial direction of the rotation center is higher than the slipperiness. A base,
A lever portion extending to the operator side, wherein the extended portion is operated to be depressed;
A support part that supports the lever part rotatably with respect to the base part about a rotation center;
A roller that rotates about a rotation center with a direction substantially parallel to the axial direction of the rotation center as an axial direction,
Pedal device characterized in that at least one of the rollers is provided in a main contact area, which is a main area assumed to be able to come into contact with a foot during a pressing operation, in the extended part of the lever part. .

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