JP2020047158A - Pedal arm - Google Patents

Abstract

To provide a pedal arm capable of generating a weld line, generated in a resin arm body by insert molding of a metal collar, at a position away from a cylindrical part of the collar on which a reaction force acts.SOLUTION: A pedal arm 10 comprises: a resin arm body 20; a tread part 22 provided on the arm body 20; and a metal collar 30. The collar 30 includes: a first cylindrical part 32 on which acts a first reaction force R1 generated by insert molding on the arm main body 20 and stepping on the tread portion 22; and a first projection part 34 projecting from the outer peripheral surface of the first cylindrical part 32 over the entire area in the axial direction of the first cylindrical part 32.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pedal arm manufactured by injection molding of a molten resin.

  Conventionally, various techniques have been proposed for a pedal arm manufactured by injection molding of a molten resin. For example, the technology described in Patent Literature 1 below is arranged so as to be rotatable around a straight line that is the center line of the cylindrical shape via a cylindrical supporting portion, and is arranged in a direction substantially perpendicular to the straight line. An arm portion is provided integrally and continuously with the support portion so as to extend toward the support portion, and the arm portion is depressed around the straight line, wherein the resin pedal is integrally formed of a resin material. The support portion has a double cylinder structure having an inner cylinder and an outer cylinder each having a cylindrical shape, and a large number of the inner cylinder and the outer cylinder are provided around the one straight line in parallel with the one straight line. And the arm portion is integrally connected to the outer peripheral surface of the outer cylinder by an axial rib.

  Due to such features, in the technology described in Patent Document 1 below, the support portion has a double cylinder structure including an inner cylinder and an outer cylinder that are integrally connected to each other via a number of axial ribs. Since the arm portion is connected to the outer peripheral surface of the outer cylinder, the rigidity and strength of the support portion are improved as in the case where the thickness of the support portion is increased to increase the outer diameter. In addition, due to the double cylinder structure, defects such as voids, sink marks, deformation, etc. occur while securing the required strength compared to the case of simply increasing the wall thickness or increasing the diameter. This prevents the dimensional accuracy from being reduced.

JP 2001-184135 A

  However, in the technology described in Patent Literature 1, when the support portion is formed of a metal collar, a weld line at the time of resin molding is formed with respect to the support portion (the metal collar) to which an operation reaction force acts. Since it occurs in a state of contact, there is a possibility that the strength of the arm portion is reduced.

  Therefore, the present invention has been made in view of the above-described point, and a weld line generated in a resin arm main body by insert molding of a metal collar is formed into a cylindrical portion of a collar on which a reaction force acts. It is an object to provide a pedal arm that can be generated at a position distant from the pedal arm.

  The invention according to claim 1, which has been made to solve this problem, is a pedal arm, comprising a resin arm body, a tread portion provided on the arm body, and insert molding on the arm body. A metal collar having a first cylindrical portion on which a first reaction force generated by being stepped on acts, and a first protrusion protruding from the outer peripheral surface of the first cylindrical portion over the entire area of the first cylindrical portion in the axial direction. And characterized in that:

  The invention according to claim 2 is the pedal arm according to claim 1, wherein the first projection of the collar is formed by a plurality of fins inclined with respect to the axial direction.

  The invention according to claim 3 is the pedal arm according to claim 1, wherein the collar is continuously provided over the entire area of one end of the first protrusion, and the second reaction force generated by stepping on the tread portion is provided. A second cylindrical portion that acts, and a second protrusion that protrudes from the outer peripheral surface of the second cylindrical portion over the entire area in the axial direction of the second cylindrical portion are provided.

  According to a fourth aspect of the present invention, there is provided the pedal arm according to the first aspect, wherein the collar is provided on the first protrusion and includes an anchor portion that engages with the arm body.

  The pedal arm of the present invention can generate a weld line generated in a resin arm body by insert molding of a metal collar at a position apart from a cylindrical portion of the collar on which a reaction force acts. is there.

It is a side view showing the pedal arm of a 1st embodiment. FIG. 4 is a perspective view showing a collar of the pedal arm. It is a figure for explaining insert molding of the same pedal arm. It is the perspective view showing the 1st modification of the collar of the same pedal arm. It is the perspective view showing the 2nd modification of the collar of the same pedal arm. It is the perspective view showing the 3rd modification of the collar of the same pedal arm. It is the perspective view showing the collar of the pedal arm of 2nd Embodiment. It is a figure for explaining insert molding of the same pedal arm. It is the perspective view showing the collar of the pedal arm of 3rd Embodiment. It is a figure for explaining insert molding of the same pedal arm. It is the perspective view showing the collar of the pedal arm of 4th Embodiment. It is a figure for explaining insert molding of the same pedal arm.

  Hereinafter, a pedal arm according to the present invention will be described based on each embodied embodiment with reference to the drawings. In each embodiment, the pedal arm according to the present invention is an insert molded product obtained by injecting and solidifying a molten resin around a metal component inserted into a mold (not shown), and is mounted on a vehicle (not shown). By being attached, it is used as a brake pedal. In the following description, a vehicle to which the pedal arm according to the present invention is attached is abbreviated as a vehicle.

  In the drawings used in the following description, a part of the basic configuration is omitted, and the dimensional ratios and the like of the drawn portions are not always accurate. The directions in each drawing are as described in each drawing.

(1) First Embodiment First, a first embodiment of the present invention will be described. As shown in FIG. 1, the pedal arm 10 according to the first embodiment has an arm body 20 and a tread portion 22. The tread portion 22 is provided behind the lower end of the arm body 20. A boss 26 and a collar 30 are provided at the upper end of the arm body 20.

  The boss 26 is provided near the lower part of the collar 30, and a shaft pin (not shown) is inserted therein. Accordingly, the boss 26 becomes the center of rotation of the arm body 20 when the driver of the vehicle performs an operation of stepping on the tread portion 22 (hereinafter, referred to as a “brake operation”).

  The collar 30 is made of metal and has a first cylindrical portion 32 and a first protrusion 34. The first cylindrical portion 32 is a portion into which a clevis pin (not shown) is inserted. The clevis connects the tip of an operating rod (not shown) extending from a brake booster (not shown) of the vehicle to the arm main body 20 in a rotatable manner. Accordingly, when the load F acts on the tread portion 22 by performing the brake operation, the first reaction force R1 acts on the center of the first cylindrical portion 32 (the inner pin).

  As shown in FIG. 2, the first protrusion 34 protrudes outward on the outer peripheral surface 32 </ b> A of the first cylindrical portion 32 over the entire area of the first cylindrical portion 32 in the axial direction D <b> 1. Thus, in the first protrusion 34, the first side surface 34A parallel to the axial direction D1 is continuous with the outer peripheral surface 32A of the first cylindrical portion 32. Further, in the first protrusion 34, the second side surface 34B perpendicular to the axial direction D1 is flush with the side plane 32B of the first cylindrical portion 32. These points are the same when the collar 30 is viewed from the back side of the paper of FIG.

  The pedal arm 10 of the first embodiment is manufactured by insert molding. In the insert molding, a molten resin is injected around the collar 30 inserted into the mold. At that time, the first projection 34 of the collar 30 is set in a state in which the direction of the mold gate G is opposite to the direction in which the gate G is located, as shown in FIG.

  In the collar 30, the side plane 32B of the first cylindrical portion 32 and the second side surface 34B of the first protrusion 34 are pressed against a mold. When insert molding is performed in such a state, a weld line W is generated in the arm main body 20 in a state where the weld line W is in contact with the first protrusion 34 of the collar 30.

  As described in detail above, the pedal arm 10 of the first embodiment is manufactured by insert molding of the resin arm body 20 and the metal collar 30. At the time of manufacture, in a mold used for insert molding, the arm 30 is formed from the outer peripheral surface 32A of the first cylindrical portion 32 to the first side surface 34A of the first protrusion 34 with respect to the collar 30. The molten resin flows from the gate G. Therefore, the weld line W is generated in the arm main body 20 in a state where the weld line W is in contact with the first protrusion 34 of the collar 30.

  Therefore, the pedal arm 10 of the first embodiment can generate the weld line W generated in the arm body 20 at a position away from the first cylindrical portion 32 of the collar 30 on which the first reaction force R1 acts. is there.

  Note that the color 30 can be variously changed without departing from the spirit thereof. Hereinafter, a first modified example, a second modified example, and a third modified example of the collar 30 will be described. In the following description, portions substantially common to the collar 30 are denoted by the same reference numerals, and detailed description thereof will be omitted.

  As shown in FIG. 4, in the collar 30A of the first modified example, a groove-shaped anchor portion 40 opened along the longitudinal direction is provided on the first side surface 34A of the first protrusion 34. . In this case, at the time of insert molding, the molten resin forming the arm body 20 solidifies while flowing into the anchor portion 40.

  As shown in FIG. 5, in the collar 30 </ b> B of the second modified example, the bolt-shaped anchor portions 42 arranged along the longitudinal direction are provided on the first side surface 34 </ b> A of the first protrusion 34. . In this case, at the time of insert molding, the molten resin forming the arm main body 20 solidifies while wrapping around the anchor portion 42.

  As shown in FIG. 6, in the collar 30 </ b> C of the third modification, an odd number of tapered plates (three in FIG. 6) arranged along the outer circumferential direction on the outer circumferential surface 32 </ b> A of the first cylindrical portion 32. ) Is provided in place of the above-mentioned first protrusion 34. Also in this case, at the time of insert molding, the molten resin forming the arm main body 20 solidifies in a state of wrapping around the anchor portions 44. However, the weld line W is generated in the arm main body 20 in a state where the weld line W is in contact with the anchor portion 44 located at the center among the odd number of anchor portions 44.

  As described above, the anchor portions 40, 42, and 44 engage with the arm body 20, so that the collars 30A, 30B, and 30C of the respective modified examples are fixed to the arm body 20 as compared with the collar 30 described above. Great effect.

(2) Second Embodiment Next, a second embodiment of the invention will be described. In the following description, portions substantially common to the first embodiment are denoted by the same reference numerals, and detailed description is omitted. In the second embodiment, a collar 30D shown in FIG. 7 is used instead of the collar 30 of the first embodiment.

  The collar 30D is made of metal, and has a second cylindrical portion 52 and a second protrusion 54 in addition to the first cylindrical portion 32 and the first protrusion 34 described above.

  The second cylindrical portion 52 is continuous over the entire area of one end 34 </ b> C of the first protrusion 34. Thereby, the first side surface 34A of the first protrusion 34 is continuous with the outer peripheral surface 52A of the second cylindrical portion 52. Further, a side plane 52B of the second cylindrical portion 52 is flush with the second side surface 34B of the first projection 34.

  The second protrusion 54 protrudes outward over the entire area of the outer peripheral surface 52 </ b> A of the second cylindrical portion 52 in the axial direction D <b> 2 of the second cylindrical portion 52. Thus, in the second protrusion 54, the first side surface 54A parallel to the axial direction D2 is continuous with the outer peripheral surface 52A of the second cylindrical portion 52. Further, in the second protrusion 54, the second side surface 54B perpendicular to the axial direction D2 is flush with the side plane 52B of the second cylindrical portion 52. These points are the same when the color 30D is viewed from the back side of the paper surface of FIG. The axial direction D2 of the second cylindrical portion 52 is parallel to the axial direction D1 of the first cylindrical portion 32.

  As shown in FIG. 8, in the insert molding in which the pedal arm 12 of the second embodiment is manufactured, a molten resin is injected around a collar 30D inserted into a mold. At this time, the second projection 54 of the collar 30D is oriented in a direction opposite to the direction in which the mold gate G is located. In this state, the second cylindrical portion 52 of the collar 30D is configured as the boss 26 of the first embodiment. Therefore, when the load F acts on the tread portion 22 by performing the brake operation, the second reaction force R2 acts on the center of the second cylindrical portion 52 (the inner shaft pin) of the collar 30D.

  In the collar 30D, the side surface 32B of the first cylindrical portion 32, the second side surface 34B of the first protrusion 34, the side surface 52B of the second cylindrical portion 52, and the second side surface 54B of the second protrusion 54 are It is pressed against the mold. When insert molding is performed in such a state, a weld line W is generated in the arm main body 20 in a state of being in contact with the second projection 54 of the collar 30D.

  As described in detail above, the pedal arm 12 of the second embodiment is manufactured by insert molding the resin arm body 20 and the metal collar 30D. At the time of its manufacture, in the mold used for insert molding, the outer peripheral surface 32A of the first cylindrical portion 32 (and the first side surface 34A of the first protrusion 34 and the second cylindrical portion 52) The molten resin that becomes the arm body 20 flows from the gate G toward the first side surface 54A of the second protrusion 54 via the outer peripheral surface 52A. Therefore, the weld line W is generated in the arm main body 20 in a state of being in contact with the second protrusion 54 of the collar 30D.

  Therefore, the pedal arm 12 of the second embodiment moves the weld line W generated in the arm body 20 at a position away from the first cylindrical portion 32 of the collar 30D on which the first reaction force R1 acts, and It can be generated at a position near the lower portion of the portion 32 and away from the second cylindrical portion 52 of the collar 30D on which the second reaction force R2 acts.

(3) Third Embodiment Next, a third embodiment of the invention will be described. In the following description, portions substantially common to the first embodiment are denoted by the same reference numerals, and detailed description is omitted. In the third embodiment, a collar 30E shown in FIG. 9 is used instead of the collar 30 of the first embodiment.

  The collar 30E is made of metal, and has a plurality of fins 60 that are inclined on the outer peripheral surface 32A of the first cylindrical portion 32 with respect to the axial direction D1 of the first cylindrical portion 32. Each of the fins 60 corresponds to the first protrusion 34 of the first embodiment, and protrudes from the outer peripheral surface 32A gradually from the front-back direction to the lower side. Further, the protruding end faces of the fins 60 are alternately arranged on the merging lines L parallel to the axial direction D1.

  As shown in FIG. 10, in the insert molding in which the pedal arm 14 of the third embodiment is manufactured, a molten resin is injected around a collar 30E inserted in a mold. At that time, (the protruding end surface) of each fin 60 of the collar 30E is set in a state of being directed in the direction opposite to the direction in which the mold gate G is located. When insert molding is performed in such a state, a weld line W is generated in the arm main body 20 in a state of being in contact with (the merging line L where the protruding end surface of each fin 60 of the collar 30E is located).

  As described in detail above, the pedal arm 14 of the third embodiment is manufactured by insert-molding the arm body 20 made of resin and the collar 30E made of metal. At the time of manufacturing, in the mold used for insert molding, the molten resin that becomes the arm body 20 flows from the gate G from the outer peripheral surface 32A of the first cylindrical portion 32 toward each fin 60 with respect to the collar 30E. . Therefore, the weld line W is generated in the arm main body 20 in a state of being in contact with (the merging line L at which the protruding end surface of the fin 60 of the collar 30E is located).

  Therefore, the pedal arm 14 of the third embodiment can generate the weld line W generated in the arm body 20 at a position away from the first cylindrical portion 32 of the collar 30E on which the first reaction force R1 acts. is there.

  Further, in the third embodiment, each fin 60 is inclined with respect to the axial direction D1 of the first cylindrical portion 32. Therefore, the weld line W has a complicated shape that undulates as the projecting end faces of the fins 60 move toward the merging line L where the fins 60 are alternately arranged. Therefore, in the third embodiment, the strength of the weld line W generated in the arm main body 20 is improved.

(4) Fourth Embodiment Next, a fourth embodiment of the invention will be described. In the following description, portions substantially common to the first embodiment are denoted by the same reference numerals, and detailed description is omitted. In the fourth embodiment, a collar 30F shown in FIG. 11 is used instead of the collar 30 of the first embodiment.

  The collar 30F is made of metal, and is provided with a plurality of fins 62 inclined on the outer peripheral surface 32A of the first cylindrical portion 32 with respect to the axial direction D1 of the first cylindrical portion 32. Each fin 62 corresponds to the first projection 34 of the first embodiment. Each fin 62 in a plan view is spirally inclined from the center C where the fins 62 gather outward. Note that, of the end faces of the fins 62, an end face 62A that is in contact with the outer peripheral circle of the side plane 32B of the first cylindrical portion 32 is flush with the side plane 32B.

  As shown in FIG. 12, in the insert molding in which the pedal arm 16 of the third embodiment is manufactured, a molten resin is injected around a collar 30F inserted into a mold. At this time, each fin 62 of the collar 30F is set in a state of being directed in a direction opposite to the direction in which the mold gate G is located.

  In the collar 30F, the side plane 32B of the first cylindrical portion 32 and the end face 62A of the fin 62 which is flush with the side plane 32B are pressed against the mold. When insert molding is performed in such a state, a weld line W is generated in the arm main body 20 in a state of being in contact with each fin 62 of the collar 30F.

  As described in detail above, the pedal arm 16 of the fourth embodiment is manufactured by insert molding the resin arm main body 20 and the metal collar 30F. At the time of manufacturing, in the mold used for insert molding, the molten resin that becomes the arm body 20 flows from the gate G toward the fins 62 from the outer peripheral surface 32A of the first cylindrical portion 32 with respect to the collar 30F. . Therefore, the weld line W is generated in the arm main body 20 in a state of being in contact with each fin 62 of the collar 30F.

  Therefore, the pedal arm 16 of the fourth embodiment can generate the weld line W generated in the arm body 20 at a position apart from the first cylindrical portion 32 of the collar 30F on which the first reaction force R1 acts. is there.

  Furthermore, in the fourth embodiment, each fin 62 is inclined with respect to the axial direction D1 of the first cylindrical portion 32. Therefore, the weld line W has a complicated shape that draws a spiral as going outward from the center C where the fins 62 gather. Therefore, in the fourth embodiment, the strength of the weld line W generated in the arm main body 20 is improved.

(5) Others The present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention.
For example, the pedal arms 10, 12, 14, and 16 of each embodiment may be used as a vehicle pedal (for example, an accelerator pedal or a clutch pedal) other than a brake pedal.

10, 12, 14, 16 Pedal arm 20 Arm body 22 Tread portion 30, 30A, 30B, 30C, 30D, 30E, 30F Collar 32 First cylindrical portion 32A Outer peripheral surface 34 of first cylindrical portion 34 First protrusion 34C First One end 40, 42, 44 of projection part 52 Anchor part 52 Second cylindrical part 52A Outer peripheral surface 54 of second cylindrical part Second projection parts 60, 62 Plural fins D1 Axial direction D2 of first cylindrical part D2 Axis of second cylindrical part Direction R1 First reaction force R2 Second reaction force

Claims (4)

A resin arm body,
A tread portion provided on the arm body,
A first cylindrical portion that is insert-molded in the arm body and is subjected to a first reaction force generated when the tread portion is stepped on, and extends from an outer peripheral surface of the first cylindrical portion to an entire region in the axial direction of the first cylindrical portion. A metal collar having a first protruding portion protruding therefrom.   The pedal arm according to claim 1, wherein the first protrusion of the collar is formed by a plurality of fins inclined with respect to the axial direction. The color is
A second cylindrical portion that is continuously provided over the entire area of one end of the first protrusion, and on which a second reaction force generated by stepping on the tread portion acts;
2. The pedal arm according to claim 1, further comprising: a second protrusion protruding from an outer peripheral surface of the second cylindrical portion over an entire area in an axial direction of the second cylindrical portion. 3. The color is
2. The pedal arm according to claim 1, further comprising an anchor provided on the first protrusion and engaged with the arm body. 3.

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