Anti-vibration handle switch device

Abstract

The object of the handle switch device provided by the present invention is to more surely suppress the shaking generated at the handle switch device. The positioning protrusion (30) has a region (R0) in which the diameter of the imaginary circle (C0) circumscribing the positioning protrusion (30) becomes smaller as it approaches the front end in the protruding direction. At least in the region (R0), regarding the cross-sectional shape of the positioning protrusion (30), the maximum width (B1) in the first direction is shorter than the maximum width (B2) in the second direction.

Description

Technical Field

[0001] The present invention relates to a handle switch device for a handle bar installed on a vehicle. Background Art

[0002] Conventionally, a handle switch device installed on a handle bar of a vehicle typified by a two-wheeled vehicle has been known. For example, in Patent Document 1, a positioning protrusion is provided inside a switch housing of the handle switch device, and the protrusion is engaged with a fitting hole formed in the handle bar, thereby positioning the handle switch device with respect to the handle bar. In addition, Patent Document 2 sets the tip of the positioning protrusion to a conical shape, so that the positioning protrusion is fitted into the fitting hole without a gap.

[0003] (Prior Art Documents)

[0004] (Patent Documents)

[0005] Patent Document 1: Japanese Utility Model Laid-Open No. 59-188783

[0006] Patent Document 2: WO2010 / 001568 Summary of the Invention

[0007] (Problems to be Solved by the Invention)

[0008] However, it is difficult to bring the positioning protrusion into contact with the entire circumferential direction of the fitting hole of the handle bar. Therefore, depending on the engagement state of the positioning protrusion and the fitting hole, there is a case where shaking occurs in the handle switch device.

[0009] The present invention more surely suppresses shaking generated in the handle switch device.

[0010] (Measures for Solving the Problems)

[0011] In order to achieve the above object, the handle switch device of the present invention is characterized by having: a switch housing that is installed on a handle bar of a vehicle; and a positioning protrusion that is integrally formed with or fixed to the switch housing, and positions the switch housing with respect to the handle bar by engaging with a fitting hole formed in the handle bar. In a state where the positioning protrusion is engaged with the fitting hole of the handle bar, in a region where the positioning protrusion and the fitting hole overlap, a cross-sectional shape of the positioning protrusion is configured such that a maximum width ratio in an axial direction of the handle bar is smaller than a maximum width in a direction orthogonal to a protruding direction of the positioning protrusion and the axial direction.

[0012] (Effects of the Invention)

[0013] According to the present invention, shaking generated in the handle switch device can be more surely suppressed. Brief Description of the Drawings

[0014] Figure 1 It is an exploded perspective view of the handle switch device.

[0015] Figure 2 It is a view showing the plate.

[0016] Figure 3 It is a sectional view along Figure 2 section line A-A.

[0017] Figure 4 It is a view showing the plate. Figure 3 section line B-B.

[0018] Figure 5 It is a perspective view showing the positioning projection of the modification example.

[0019] Figure 6 It is a sectional view of the positioning projection of the modification example.

[0020] Figure 7 It is a sectional view of the positioning projection of the modification example.

[0021] Figure 8 It is a sectional view of the positioning projection of the modification example. Detailed Description of the Invention

[0022] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0023] Figure 1 It is an exploded perspective view of the handle switch device 100 according to an embodiment of the present invention. The handle switch device 100 is mounted on the handlebar 10 of a vehicle represented by a two-wheeled vehicle. In addition, the handlebar for mounting the handle switch device 100 may be cylindrical, and is not limited to the handlebar of a two-wheeled vehicle, and may also be the handlebar of a three-wheeled vehicle or a four-wheeled vehicle.

[0024] In the handle switch device 100, as a switch housing covering the right end portion of the handlebar 10, there are a front housing 11 and a rear housing 12. The front housing 11 and the rear housing 12 are arranged substantially front and rear in the traveling direction of the vehicle. Various switches are mounted on the front housing 11 on the driver side. For example, the switch 13 is an engine stop switch. The switch 14 is a hazard switch. The switch 15 is a start switch. The front housing 11 and the rear housing 12 are fastened to each other by two screws 41 and 42, and thus are fixed to the handlebar 10 in a manner of clamping the handlebar 10 from the front and rear directions. Both the front housing 11 and the rear housing 12 are integrally formed of resin.

[0025] The handlebar 10 is made of metal. A fitting hole 10a is formed in the handlebar 10. A metal plate 20 is fixed to the inner side of the rear housing 12 by screws 17, 18. The detailed structure of the plate 20 will be described later. The plate 20 is formed with a positioning projection 30. The front housing 11 and the rear housing 12 are fastened to each other, and thus the positioning projection 30 is engaged with the fitting hole 10a of the handlebar 10. Thereby, the positioning of the switch housing with respect to the handlebar 10 is completed in the axial direction (center axis X1 direction) of the handlebar 10 and the rotational direction (circumferential direction) of the handlebar 10 about the center axis X1.

[0026] Figure 2 A view showing the plate 20. Figure 3 Along Figure 2 The sectional view taken along the line A-A. The plate 20 has a flat first base portion 21 and a flat second base portion 22. The first base portion 21 and the second base portion 22 are connected by an inclined surface portion. An extension portion 27 extends from the first base portion 21 through a bent portion ( Figure 3 ).

[0027] The hole 26 in the first base portion 21 is a hole through which a screw 41 for fastening the front housing 11 and the rear housing 12 passes. The screw 17 is screwed into the rear housing 12 through the hole 23 in the first base portion 21, and at the same time, the screw 18 is screwed into the rear housing 12 through the hole 25 in the extension portion 27. The hole 24 in the second base portion 22 is a clearance hole when the screw 18 is screwed.

[0028] Figure 4 Along Figure 3 The sectional view taken along the line B-B. The positioning projection 30 is integrally formed on the plate 20 which is a metal component. The positioning projection 30 is formed to project from the second base portion 22 toward the center axis X1 of the handlebar 10. When viewed from the opposite side of the handlebar 10 with the second base portion 22 interposed therebetween, the positioning projection 30 is a concave portion recessed toward the side where the center axis X1 is located. The front end portion of the positioning projection 30 is a substantially flat top surface portion 35.

[0029] As Figure 4 shown, the positioning projection 30 has a first wall portion 31, a second wall portion 32, a third wall portion 33, and a fourth wall portion 34. The front ends of these wall portions are connected to each other by the top surface portion 35 ( Figure 2 , Figure 3 ). The contour of the positioning projection 30 is formed in a tapered shape with a thin front end. That is, the outer surfaces of the wall portions 31 to 34 are in a tapered shape. In addition, the outer surfaces of the wall portions 33, 34 may not be in a tapered shape. For example, they may be parallel to the protruding direction of the positioning projection 30. The positioning projection 30 is designed to be able to be engaged in the engagement region R0 in the protruding direction ( Figure 3That is, when the positioning protrusion 30 is engaged with the fitting hole 10, the positioning protrusion 30 and the fitting hole 10 overlap in the engagement region R0.

[0030] like Figure 4 As shown, the direction perpendicular to the protruding direction of the positioning protrusion 30 and parallel to the central axis X1 is called the first direction (axial direction), and the direction perpendicular to the protruding direction and the axial direction is called the second direction. Consider an imaginary circle C0 circumscribed to the positioning protrusion 30. The imaginary circle C0 is an imaginary circle contained in an imaginary plane perpendicular to the protruding direction of the positioning protrusion 30. Figure 4 In the figure, as a circle consistent with one of the imaginary circles C0, the end position on one side away from the central axis X1 of the fitting hole 10a is shown. The positioning protrusion 30 has a region where the diameter of the imaginary circle C0 is smaller as it approaches the front end of the protruding direction. The engaging region R0 is included in this region. At least in the engaging region R0, the cross-sectional shape of the positioning protrusion 30 is annular. The center of gravity G shows the center of gravity position of the cross-sectional shape.

[0031] Generally speaking, the handlebar is cylindrical and the mating hole is circular, so the tapered positioning protrusion has a tendency to firmly abut against the two end positions of the mating hole in the axial direction of the handlebar. In the case where the positioning protrusion is mainly engaged with the two end positions of the mating hole in the axial direction of the handlebar, there is a problem that the shaking along the axial direction is small but the shaking in the rotation direction becomes large. The shaking in the rotation direction is easily noticed by the user, so it is hoped to be avoided as much as possible. Therefore, as described below, in this embodiment, focusing on the engagement relationship between the positioning protrusion 30 and the mating hole 10a, the shaking is suppressed.

[0032] The first wall portion 31 and the second wall portion 32 each have arc portions 31a and 32a along the imaginary circle C0. The first wall portion 31 and the second wall portion 32 correspond to a pair of arc-shaped wall portions located at both ends in the second direction. One ends of the first wall portion 31 and the second wall portion 32 in the first direction are connected by the third wall portion 33, and the other ends of the first wall portion 31 and the second wall portion 32 in the first direction are connected by the fourth wall portion 34.

[0033] Regarding the cross-sectional shape of the positioning protrusion 30, the second direction is the length direction. That is, at least in the engagement area R0, regarding the cross-sectional shape of the positioning protrusion 30, the maximum width B1 in the first direction is shorter (smaller) than the maximum width B2 in the second direction. As a result, the third wall portion 33 and the fourth wall portion 34 are not engaged with the fitting hole 10a at the middle position in the second direction (length direction), and the first wall portion 31 and the second wall portion 32 are engaged with the fitting hole 10a. Therefore, the positioning protrusion 30 is reliably positioned in the fitting hole 10a in the second direction. Furthermore, the shaking of the switch housing relative to the handlebar 10 along the rotation direction centered on the central axis X1 is suppressed.

[0034] If the characteristics and functions of the shape of the positioning protrusion 30 are described in another way, it is as follows. The positioning protrusion 30 is formed with clearance portions 33x and 34x, and the clearance portions 33x and 34x are used to ensure gaps S1 and S2 between the positioning protrusion 30 and the fitting hole 10a in the first direction when the positioning protrusion 30 and the fitting hole 10a are engaged. That is, for the conical shape with a flat front end, the clearance portions 33x and 34x are formed so that the two ends of the positioning protrusion 30 in the first direction do not abut the fitting hole 10a at the middle position in the second direction. As a result, the positioning protrusion 30 is engaged with the fitting hole 10a through the arc portion 31a of the first wall portion 31 and the arc portion 32a of the second wall portion 32.

[0035] Furthermore, even when the switch housing is subjected to a force in the first direction, one end or the other end of the arc portion 31a, 32a in the second direction is firmly engaged with the fitting hole 10a, thereby limiting the displacement of the switch housing in the first direction, and thus preventing the handlebar 10 from shaking in the axial direction.

[0036] According to the present embodiment, there is a region R0 where the diameter of the imaginary circle C0 circumscribed to the positioning protrusion 30 becomes smaller as it approaches the front end in the protruding direction. At least in the region R0, regarding the cross-sectional shape of the positioning protrusion 30, the maximum width B1 in the first direction is shorter than the maximum width B2 in the second direction. Thus, the shaking of the handle switch device 100 in the rotation direction with respect to the handlebar 10 about the central axis X1 can be suppressed. Therefore, the shaking generated in the handle switch device can be more reliably suppressed.

[0037] In addition, the positioning protrusion 30 has a hollow recess, which helps to save materials and lighten the weight. Even if the positioning protrusion 30 has such a shape, since the front ends of the wall portions 31 and 32 having the arc portions 31a and 32a engaged with the fitting hole 10a are connected to each other through the top surface portion 35, the high strength of the positioning protrusion 30 can be ensured. In addition, in the engagement area R0, the cross-sectional shape of the positioning protrusion 30 is annular, thereby ensuring high strength. In addition, from the viewpoint of further improving strength, the positioning protrusion 30 can also be set to a solid structure instead of a recessed shape.

[0038] Furthermore, since the positioning protrusion 30 is formed integrally with the plate 20 which is a metal member fixed to the switch housing, it is possible to improve durability while suppressing the number of components.

[0039] In addition, the positioning protrusion 30 may be formed integrally with the switch housing, or may be fixed to the switch housing. That is, the positioning protrusion 30 does not necessarily have to be formed on the plate 20, and may also be configured integrally with the switch housing. Figure 5As shown as a modification example, the positioning projection 30 may be a metal component and configured to be integral with the rear housing 12. The base 36 is integrally formed on the rear housing 12. The positioning projection 30, which is a metal pin, is provided on the base 36 of the rear housing 12 by insert molding or the like. Thus, the metal positioning projection 30 is formed to be integral with the resin rear housing 12. Alternatively, the metal positioning projection 30 is fixed to the rear housing 12 by press fitting.

[0040] Alternatively, the positioning projection 30 may also be integrally formed on the switch housing. In this case, using Figure 5 for illustration, the base 36 and the positioning projection 30 are integrally formed on the resin rear housing 12 by injection molding. In addition, in all examples, the base 36 may be in the form of a boss. In addition, the base 36 is not necessary.

[0041] Using Figures 6 - 8 to illustrate the positioning projection 30 of the modification example. Figures 6 - 8 FIG. is a cross-sectional view of the positioning projection 30 of the modification example, corresponding to Figure 4 FIG.

[0042] Compared with the example shown in Figure 4 FIG., Figure 6 the shown positioning projection 30 has a structure in which the third wall portion 33 and the fourth wall portion 34 are removed. The front end portions of the wall portions 31 and 32 are connected to each other by the top surface portion 35. The engagement relationship between the wall portions 31 and 32, the imaginary circle C0 and the fitting hole 10a is the same as that of the example shown in Figure 4 FIG.

[0043] Compared with the example shown in Figure 4 FIG., Figure 7 the shown positioning projection 30 has a structure in which the first wall portion 31 and the second wall portion 32 are removed. Among them, both ends of the third wall portion 33 in the second direction have arc portions 33a1 and 33a2 along the imaginary circle C0. Similarly, both ends of the fourth wall portion 34 in the second direction have arc portions 34a1 and 34a2 along the imaginary circle C0. The front end portions of the wall portions 33 and 34 are connected to each other by the top surface portion 35. The arc portions 33a1, 33a2, 34a1, and 34a2 are engaged with the fitting hole 10a.

[0044] Figure 8 The shown positioning projection 30 has column portions 37A, 37B, 38A, and 38B whose diameters become smaller as they approach the front end in the protruding direction. The front end portions of the column portions 37A, 37B, 38A, and 38B are connected to each other by the top surface portion 35. The column portions 37A, 37B, 38A, and 38B are engaged with the fitting hole 10a.

[0045] In the example shown in Figure 4 FIG., Figures 6 - 8In the illustrated modification example, it is not necessary for the front end portions of the positioning protrusions 30 to be connected by a flat wall such as the top surface portion 35. For example, the front end of the positioning protrusion 30 may be pointed, and a structure may be adopted in which each wall portion and each column portion are connected at the front end position of the positioning protrusion 30.

[0046] In addition, in the above example, the positioning protrusion 30 is provided on the rear housing 12, but it may also be provided on the front housing 11.

[0047] In the above example, as the handlebar switch device 100, a device mounted on the right end portion of the handlebar 10 is shown, but the present invention can also be applied to a handlebar switch device mounted on the left end portion of the handlebar 10.

[0048] In addition, it is not necessary to make the curvature of the fitting hole (or the imaginary circle C0) coincide with the curvature of the arc portions 31a and 32a. For example, the curvature of the arc portions 31a and 32a at the position where they are engaged with the fitting hole 10a can be set to be smaller than that of the fitting hole 10a (the radius of curvature is relatively large), and the arc portions 31a and 32a are each in contact with the fitting hole 10a at a plurality of positions. In this way, the fixing state of the handlebar 10 and the handlebar switch device 100 can be made more reliable.

[0049] As described above, the present invention has been described in detail based on the preferred embodiments, but the present invention is not limited to these specific embodiments, and various modes within the scope not departing from the gist of the present invention also belong to the present invention.

[0050] This application claims the priority of Japanese Patent Application No. 2020-105964 filed on June 19, 2020, and incorporates the entire content of this application into this specification.

[0051] (Explanation of reference numerals)

[0052] 10: Handlebar; 10a: Fitting hole; 11: Front housing; 12: Rear housing; 20: Plate;

[0053] 30: Positioning protrusion; 31 to 34: Wall portions; 33a1, 33a2, 34a1, 34a2: Arc portions;

[0054] 35: Top surface portion; 37A, 37B, 38A, 38B: Column portions; 100: Handlebar switch device;

[0055] C0: Imaginary circle; R0: Region; B1, B2: Maximum width;

[0056] S1, S2: Clearance; 33x, 34x: Relief portions.

Claims

1. A handle switch device, characterized in that, it has: a switch housing, which is mounted on the handlebar of a vehicle; and a positioning protrusion, which is integrally formed on the switch housing or fixed to the switch housing, and positions the switch housing relative to the handlebar by engaging with a fitting hole formed in the handlebar, in a state where the positioning protrusion engages with the fitting hole of the handlebar, in a region where the positioning protrusion and the fitting hole overlap, a cross-sectional shape of the positioning protrusion is configured such that a maximum width in an axial direction of the handlebar is smaller than a maximum width in a direction orthogonal to a protruding direction of the positioning protrusion and the axial direction, the positioning protrusion includes a wall portion, and the wall portion has an arc portion along an imaginary circle circumscribing the positioning protrusion.

2. The handle switch device according to claim 1, characterized in that, the positioning protrusion has a region where a diameter of the imaginary circle circumscribing the positioning protrusion becomes smaller as it approaches a front end in the protruding direction of the positioning protrusion.

3. The handle switch device according to claim 2, characterized in that, the wall portion is a pair of arc-shaped wall portions located at both ends in a direction orthogonal to the protruding direction and the axial direction.

4. The handle switch device according to claim 3, characterized in that, front end portions of the pair of arc-shaped wall portions are connected to each other.

5. The handle switch device according to claim 1, characterized in that, at least in the region, the cross-sectional shape of the positioning protrusion is annular.

6. The handle switch device according to claim 1, characterized in that, the positioning protrusion is integrally formed on a component fixed to the switch housing.

7. The handle switch device according to claim 6, characterized in that, the fixed component is made of metal.

8. The handle switch device according to claim 1, characterized in that, the positioning protrusion is integrally formed on the switch housing.

9. The handle switch device according to claim 1, characterized in that, the positioning protrusion is a metal component integrally formed with the switch housing.

Images