Throttle control device

Abstract

The present invention provides a throttle control device that can effectively shield against unintended external magnetic fields and more reliably suppress false detections by detection sensors caused by external magnetic influences. [Solution] A throttle operating device comprising a magnet M that rotates according to the amount of operation of the throttle lever 2, a detection sensor 11 that detects the amount of operation of the throttle lever 2, a magnetic shielding member 13 capable of shielding the detection sensor 11 from external magnetism, and a case member 12 to which the detection sensor 11 and the magnetic shielding member 13 are mounted, wherein the magnetic shielding member 13 has a first cylindrical shielding member 13a and a second cylindrical shielding member 13b, which are cylindrical members mounted surrounding the detection sensor 11, and the first cylindrical shielding member 13a and the second cylindrical shielding member 13b are mounted so as to overlap on substantially the same plane K as the detection surface Q of the detection sensor 11.

Description

Technical Field

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[0001] The present invention relates to a throttle operation device capable of detecting an operation amount of an operation means with a detection sensor and controlling a drive source of a vehicle based on the detected value.

Background Art

[0002] As a conventional throttle operation device for operating the throttle opening in vehicles such as ATVs and four-wheel buggies, for example, as disclosed in Patent Document 1, there is one provided with a throttle lever (thumb throttle lever) attached near a grip. Such a conventional throttle operation device is configured such that when a driver's finger holding the grip extends to the throttle lever and rotates to rotate a magnet, a detection sensor detects the rotation operation angle and can control an engine or the like of the vehicle.

[0003] Further, in the conventional throttle operation device, a magnetic shielding member is attached around the detection sensor. Such a magnetic shielding member is made of a magnetic material such as iron and shields magnetic fields from the outside. Even when an external magnet is inadvertently brought close to the detection sensor, it can shield unintended magnetic fields from the external magnet and suppress false detection by the detection sensor.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, while the above-mentioned conventional technology can shield the detection sensor from unintended external magnetic fields, there has recently been a growing need to further enhance the magnetic shielding effect. In particular, when an external magnet is placed on approximately the same plane as the sensing surface of the detection sensor, the influence of the external magnetic field on the detection sensor becomes significant. Therefore, we have come to consider how to effectively suppress false detections by focusing on magnetic shielding on approximately the same plane as the detection surface of the detection sensor.

[0006] The present invention has been made in view of these circumstances, and aims to provide a throttle control device that can effectively shield against unintended external magnetic fields and more reliably suppress false detections by detection sensors due to the influence of external magnetic fields. [Means for solving the problem]

[0007] The invention described in claim 1 is a throttle operating device capable of controlling the drive source of a vehicle based on the amount of operation of the operating device, comprising: an operating means capable of throttle operation; a magnetic generating means that generates magnetism and rotates in accordance with the amount of operation of the operating means; a detection sensor having a detection surface for detecting the amount of operation of the operating means and detecting the amount of operation of the operating means; a magnetic shielding member mounted around the detection sensor and capable of shielding from external magnetism; and a case member to which the detection sensor and the magnetic shielding member are mounted, wherein the magnetic shielding member comprises a plurality of cylindrical shielding members consisting of cylindrical members mounted surrounding the detection sensor, and the plurality of cylindrical shielding members are mounted so as to overlap substantially on the same plane as the detection surface of the detection sensor.

[0008] The invention described in claim 2 is a throttle operating device according to claim 1, wherein the cylindrical shielding member comprises a first cylindrical shielding member attached to the inner circumference surrounding the detection sensor and a second cylindrical shielding member attached to the outer circumference surrounding the detection sensor, characterized in that the first cylindrical shielding member and the second cylindrical shielding member are attached to the inside and outside of the detection sensor, respectively.

[0009] The invention described in claim 3 is characterized in that, in the throttle operating device described in claim 2, the case member has a first fitting groove formed on one surface into which the first cylindrical shielding member is fitted, and a second fitting groove formed on the other surface into which the second cylindrical shielding member is fitted.

[0010] The invention described in claim 4 is a throttle operating device according to claim 3, characterized in that the first cylindrical shielding member fitted into the first fitting groove and the second cylindrical shielding member fitted into the second fitting groove have an overlapping portion, and the overlapping portion includes a plane substantially identical to the detection surface of the detection sensor.

[0011] The invention described in claim 5 is characterized in that, in the throttle operating device described in claim 4, a sealing member is provided for sealing the case member, and the sealing member is mounted at a position spaced apart from the overlap portion.

[0012] The invention described in claim 6 is characterized in that, in the throttle operating device described in claim 1, the cylindrical shielding member has a notch in part.

[0013] The invention described in claim 7 is a throttle operating device according to claim 1, characterized in that the magnetic shielding member has a lid-shaped shielding member that closes the opening of the cylindrical shielding member and covers the upper part of the detection sensor to shield from external magnetism. [Effects of the Invention]

[0014] According to the invention of claim 1, the magnetic shielding member has a plurality of cylindrical shielding members, each consisting of a cylindrical member mounted around the detection sensor, and the plurality of cylindrical shielding members are mounted so as to overlap substantially on the same plane as the detection surface of the detection sensor, so that unintended magnetism from the outside can be effectively shielded and false detection of the detection sensor due to the influence of external magnetism can be more reliably suppressed.

[0015] According to the invention of claim 2, the cylindrical shielding member comprises a first cylindrical shielding member attached to the inner circumference surrounding the detection sensor and a second cylindrical shielding member attached to the outer circumference surrounding the detection sensor, and since the first cylindrical shielding member and the second cylindrical shielding member are attached to the inside and outside of the detection sensor, respectively, the first cylindrical shielding member and the second cylindrical shielding member can more effectively shield against unintended magnetism from the outside.

[0016] According to the invention of claim 3, the case member has a first fitting groove formed on one surface into which a first cylindrical shielding member is fitted, and a second fitting groove formed on the other surface into which a second cylindrical shielding member is fitted. Therefore, the first cylindrical shielding member and the second shielding member can be arranged on one surface and the other surface of the case member, respectively.

[0017] According to the invention of claim 4, the first cylindrical shielding member fitted into the first fitting groove and the second cylindrical shielding member fitted into the second fitting groove have an overlapping portion, and the overlapping portion includes a plane substantially identical to the detection surface of the detection sensor. Therefore, external magnetic fields can be reliably shielded within a predetermined shielding range formed by the overlapping portion.

[0018] According to the invention of claim 5, the case member is provided with a sealing member, and the sealing member is mounted at a position spaced apart from the overlap portion, so that magnetic shielding by the magnetic shielding member can be performed while maintaining the sealing structure, and magnetic shielding by the magnetic shielding member and sealing by the sealing member can be reliably performed.

[0019] According to the invention of claim 6, since the cylindrical shielding member has a notch in part, wiring or the like extended from the detection sensor can pass through the notch, and the degree of freedom in layout in the vicinity of the magnetic shielding member can be improved.

[0020] According to the invention of claim 7, since the magnetic shielding member has a lid-shaped shielding member that closes the opening of the cylindrical shielding member and covers the upper part of the detection sensor to shield external magnetic fields, external magnetic fields from the opening of the cylindrical shielding member to the detection sensor can be reliably shielded.

Brief Description of the Drawings

[0021] [Figure 1] Overall perspective view showing a throttle operation device according to an embodiment of the present invention [Figure 2] Three-view drawing showing the throttle operation device [Figure 3] Cross-sectional view taken along line III-III of FIG. 2 [Figure 4] Cross-sectional view taken along line IV-IV of FIG. 2 [Figure 5] Perspective view showing a throttle lever of the throttle operation device and an integral component that rotates together with the throttle lever [Figure 6] Exploded perspective view showing an integral component including the throttle lever of the throttle operation device [Figure 7] Exploded perspective view showing an integral component including the throttle lever of the throttle operation device, a housing case, a seal member, and a magnetic shielding member [Figure 8] Exploded perspective view showing an integral component including the throttle lever of the throttle operation device, a housing case, a seal member, and a magnetic shielding member [Figure 9] Plan view and front view showing a fixing member of the throttle operation device [Figure 10] Three-view drawing showing the housing case of the throttle operation device [Figure 11] Perspective view showing the housing case [Figure 12] Perspective view showing a state where a magnetic shielding member is attached to the housing case [Figure 13] A three-view drawing showing the housing case with a magnetic shielding member attached. [Figure 14] This is a cross-sectional view showing the throttle control device housing with the detection sensor and magnetic shielding member installed. [Figure 15] Perspective view showing the magnetic shielding means (first cylindrical shielding member) of the throttle control device. [Figure 16] A perspective view showing the magnetic shielding means (second cylindrical shielding member) of the throttle control device. [Figure 17] A schematic diagram showing the state of the throttle lever of the throttle control device before and after rotation. [Figure 18] A schematic plan view showing the throttle control device with an external magnet brought close to it. [Figure 19] This graph shows experimental results demonstrating the technological superiority of the throttle control device. [Modes for carrying out the invention]

[0022] Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. The throttle control device according to this embodiment is fixed to the handlebars of a vehicle such as an ATV or buggy and is capable of controlling the drive source of the vehicle, such as the engine or motor. As shown in Figures 1 to 4, it is composed of a fixing member 1, a throttle lever 2 (operating means) which is a so-called thumb lever that can operate the throttle, a cover member 3, a rotating member 5, a mounting member 6, a resistance force applying means 7, a detection sensor 11, a case member 12, a magnetic shielding member 13, a return spring S, and a magnet M (magnetic generation means).

[0023] The fixing member 1 is fixed to the handlebar H and supports the throttle lever 2 so that it can rotate freely. It is fixed near the grip formed at the tip of the vehicle's handlebar H. As shown in Figure 9, the fixing member 1 has an opening at the top to form a housing space inside, and a clamping member 4 is attached to the bottom, which allows the handlebar H to be clamped and fixed.

[0024] Furthermore, as shown in Figures 2 and 9, the fixing member 1 has a pair of restricting portions 1a-1a formed at a predetermined distance apart from each other, and the housing space formed inside has a mounting groove 1b for fitting and positioning the seal member 9, a through hole 1c for inserting the shaft member L and allowing rotation of the throttle lever 2, a locking portion 1d for locking the other end Sb of the return spring S, a mounting recess 1e for aligning with the fixing portion 12d of the case member 12, and a housing recess 1f for housing the return spring S.

[0025] A cover member 3 is attached to the upper part of the fixing member 1. This cover member 3 is fixed to the fixing member 1 by mounting screws Na, covering the opening at the top of the fixing member 1. Furthermore, as shown in Figures 1 and 2, the throttle operating device T according to this embodiment has a switch device P attached adjacent to it, and various electrical components mounted on the vehicle can be operated by operating the switch knob Pa formed on the switch device P.

[0026] The throttle lever 2 is mounted extending downward from the fixed member 1 and can be rotated by the driver while gripping the vehicle's gripping handle. As shown in Figure 5, it is connected to the shaft member L. This shaft member L rotates around its axis in response to the rotation of the throttle lever 2, and a rotating member 5 is fixed to its tip by a mounting screw Nb and a washer W, as shown in Figure 6.

[0027] As shown in Figures 5 and 6, the throttle lever 2 has a protruding portion 2a that extends laterally, and is configured so that when assembled to the fixing member 1, the protruding portion 2a is positioned between the pair of restricting portions 1a-1a. As a result, the rotation angle of the throttle lever 2 and the shaft member L is restricted to a predetermined range between the restricting portions 1a-1a.

[0028] The rotating member 5 is rotatable in response to the rotational operation of the throttle lever 2, and as shown in Figures 5 and 6, it has a mounting portion 5a to which the resistance force applying means 7 and the coil spring 8 can be attached, and a locking portion 5b (see Figure 3) for locking one end Sa of the return spring S. As shown in Figure 3, the resistance force applying means 7 is assembled by being pressed against the bottom surface of the case member 12 by the biasing force of the coil spring 8, and when the throttle lever 2 is rotated and the rotating member 5 rotates, the resistance force applying means 7 slides along the bottom surface of the case member 12, thereby applying frictional force (resistance force).

[0029] Furthermore, the rotating member 5 is assembled such that one end Sa of the return spring S is locked to the locking portion 5b of the rotating member 5, and the other end Sb is locked to the locking portion 1d of the fixed member 1. Therefore, when the throttle lever 2 is rotated, the shaft member L and the rotating member 5 are biased toward the initial position by the return spring S.

[0030] The return spring S is made of a torsion coil spring and is housed in a housing recess 1f of the fixing member 1. A protective member 14 is attached to the inner circumferential wall of the housing recess 1f, as shown in Figures 3 and 4. As shown in Figure 6, the protective member 14 is made of a C-shaped stainless steel plate and protects the outer surface of the return spring S (protection in case of interference). After being inserted into the housing recess 1f in a reduced diameter state due to elastic deformation, it is returned to its original state (original diameter) by restoring force, and is fixed to the inner circumferential wall of the housing recess 1f by its own elastic force.

[0031] Furthermore, as shown in Figures 5 and 6, a mounting member 6 is attached to the upper part of the rotating member 5 by a pair of mounting screws n1, and a magnet M is attached to the mounting member 6 as a means for generating magnetism. This magnet M is fitted and attached to the upper part of the mounting member 6 and is rotatable together with the shaft member L in accordance with the rotational operation of the throttle lever 2 (i.e., the amount of operation of the throttle lever 2). Note that the magnet M may be made of another material such as magnetized plastic instead of a permanent magnet.

[0032] As described above, the throttle operating device T according to this embodiment is assembled with a throttle lever 2, a shaft member L, a rotating member 5, a mounting member 6, a resistance force applying means 7, a magnet M, and a return spring S, forming an integrated component Y as shown in Figure 5. This integrated component Y rotates relative to the fixed member 1 when the throttle lever 2 is rotated, and the integrated component Y is biased toward its initial position by the return spring S. As a result, by releasing the operating force on the throttle lever 2, the entire integrated component Y, including the throttle lever 2, returns to its initial position.

[0033] The detection sensor 11 is mounted on the circuit board 10 and can detect the rotational operation angle (amount of operation) of the throttle lever 2. In this embodiment, it consists of an angle sensor having a detection surface Q that detects magnetic changes of the magnet M. As shown in Figures 14 and 17, the detection surface Q is the sensing surface of the detection sensor 11 that can detect magnetic changes accompanying the rotation of the magnet M, and in this embodiment, it consists of a plane that is substantially perpendicular to the rotation axis of the magnet M.

[0034] In other words, in this embodiment, when the throttle operating device T rotates in conjunction with the rotation of the throttle lever 2, the magnet M (magnetic generating means) rotates, and the detection surface Q of the detection sensor 11 detects the change in the magnet M caused by that rotation, thereby detecting the rotation angle (amount of operation) of the throttle lever 2.

[0035] Then, when the throttle lever 2 rotates by a predetermined angle from its initial position (see Figure 17(a)) (see Figure 17(b)), the detection sensor 11 detects the change in the magnet M corresponding to the rotation angle, and the detection signal is transmitted to the vehicle's control means (such as an ECU (Engine Control Unit)) via wiring h connected to the circuit board 10. As a result, the vehicle's drive source (engine, etc.) is controlled based on the rotation angle of the throttle lever 2.

[0036] The magnetic shielding member 13 is made of a ferromagnetic material such as iron and is attached around the detection sensor 11 to shield against external magnetism. In this embodiment, as shown in Figure 8, it has a plurality of cylindrical shielding members (first cylindrical shielding member 13a and second cylindrical shielding member 13b) which are cylindrical members attached to surround the detection sensor 11, and a lid-shaped shielding member 13c which closes the opening of the cylindrical shielding member (second cylindrical shielding member 13b in this embodiment) and covers the upper part of the detection sensor 11 to shield against external magnetism.

[0037] As shown in Figures 7, 8, and 15, the first cylindrical shielding member 13a is made of a magnetic material consisting of a cylindrical member with openings at the top and bottom and a notch 13aa formed in a part of it. Similarly, as shown in Figures 7, 8, and 16, the second cylindrical shielding member 13b is made of a cylindrical member with openings at the top and bottom and a notch 13ba formed in a part of it.

[0038] However, the first cylindrical shielding member 13a has a smaller diameter than the second cylindrical shielding member 13b, and when the first cylindrical shielding member 13a and the second cylindrical shielding member 13b are attached to the case member 12, as shown in Figure 14, the first cylindrical shielding member 13a is positioned on the inside relative to the detection sensor 11, and the second cylindrical shielding member 13b is positioned on the outside.

[0039] The case member 12 is to which the detection sensor 11 and magnetic shielding member 13 (first cylindrical shielding member 13a, second cylindrical shielding member 13b, and lid-shaped shielding member 13c) are attached. As shown in Figures 10-11, it has a first fitting groove 12a formed on one surface F1 (front surface) into which the first cylindrical shielding member 13a is fitted, a second fitting groove 12b formed on the other surface F2 (back surface) into which the second cylindrical shielding member 13b is fitted, a mounting portion 12c for attaching the substrate 10, a pair of fixing portions 12d that protrude to the side, and an arm portion 12e that protrudes to the side.

[0040] The first insertion groove 12a has a groove shape into which the upper end of the first cylindrical shielding member 13a can be inserted and attached, and is formed on the inside of the case member 12 relative to the second insertion groove 12b. The second insertion groove 12b has a groove shape into which the lower end of the second cylindrical shielding member 13b can be inserted and attached, and is formed on the outside of the case member 12 relative to the first insertion groove 12a.

[0041] In this embodiment, the case member 12 is fixed to the fixing member 1 with mounting screws n2 (see Figure 8) after the fixing portion 12d is aligned with the mounting recess 1e formed in the fixing member 1. In addition, the mounting screws n2 are threaded together, allowing the lid-shaped shielding member 13c to be fixed to the fixing member 1 in addition to the case member 12. The arm portion 12e allows wiring h extending from the substrate 10 attached to the mounting portion 12c to be fixed with cable ties or the like.

[0042] Here, the throttle operating device T according to this embodiment has a plurality of cylindrical shielding members (in this embodiment, a first cylindrical shielding member 13a and a second cylindrical shielding member 13b), as previously described, and as shown in Figures 14 and 17, the plurality of cylindrical shielding members (the first cylindrical shielding member 13a and the second cylindrical shielding member 13b) are mounted so as to overlap on substantially the same plane K as the detection surface Q of the detection sensor 11.

[0043] Specifically, when the substrate 10 on which the detection sensor 11 is formed is attached to the mounting portion 12c, the upper end of the first cylindrical shielding member 13a is fitted into the first fitting groove 12a, and the lower end of the second cylindrical shielding member 13b is fitted into the second fitting groove 12b. As shown in Figure 14, the first cylindrical shielding member 13a located on the inside and the second cylindrical shielding member 13b located on the outside are formed in a substantially concentric manner with respect to the detection sensor 11.

[0044] As a result, the throttle operating device T according to this embodiment is mounted so that multiple cylindrical shielding members (first cylindrical shielding member 13a and second cylindrical shielding member 13b) overlap on substantially the same plane K as the detection surface Q of the detection sensor 11, as shown in Figures 14 and 17. That is, as shown in Figure 14, the upper end of the first cylindrical shielding member 13a and the lower end of the second cylindrical shielding member 13b overlap to form an overlap portion α, and substantially the same plane K as the detection surface Q of the detection sensor 11 is included in the overlap portion α.

[0045] Furthermore, as shown in Figures 3 and 4, the case member 12 according to this embodiment has a pressing surface F1a that presses from above against the sealing member 9 attached to the mounting groove 1b of the fixing member 1. As shown in Figures 10 to 14, this pressing surface F1a consists of a part (periphery) of one surface F1 of the case member 12. The sealing member 9 consists of an O-ring or the like for waterproofing and dustproofing, and its sealing function (waterproofing and dustproofing, etc.) is performed when it is pressed by the pressing surface F1a of the case member 12, and it is attached at a position spaced apart from the overlap portion α (in this embodiment, at a position below the lower end of the second cylindrical shielding member 13b).

[0046] Next, we will describe experimental results demonstrating the technical advantages of the throttle control device T according to this embodiment. First, we prepared four configurations: one with both the first cylindrical shielding member 13a and the second cylindrical shielding member 13b attached (Example A), one with only the first cylindrical shielding member 13a attached (Example A1), one with only the second cylindrical shielding member 13b attached (Example A2), and one without either the first or second cylindrical shielding member 13a or the second cylindrical shielding member 13b attached (Comparative Example E).

[0047] Subsequently, as shown in Figure 18, Examples A, A1, A2, and Comparative Example E were placed, and an external magnet R was placed at a nearby position D1 on the side. This nearby position D1 (and nearby positions D2 and D3 similarly) is a position that includes a plane K that is approximately the same as the detection surface Q of the detection sensor 11. Then, the throttle lever 2 of Examples A, A1, A2, and Comparative Example E was rotated, and the detection value of the detection sensor 11 was obtained during the process of this rotation.

[0048] As a result, when the difference between the normal detected value (angle change) corresponding to the operating angle of the throttle lever 2 and the actually measured detected value (angle change) was plotted, a graph like the one shown in Figure 19 was obtained. According to this graph, it can be seen that Example A, in which both the first cylindrical shielding member 13a and the second cylindrical shielding member 13b are attached, and Examples A1 and A2, in which either the first cylindrical shielding member 13a or the second cylindrical shielding member 13b is attached, can shield from external magnetism from the external magnet R better than Comparative Example E, in which neither the first cylindrical shielding member 13a nor the second cylindrical shielding member 13b is attached.

[0049] Furthermore, it can be seen that Embodiment A, in which both the first cylindrical shielding member 13a and the second cylindrical shielding member 13b are attached, can shield from external magnetism from the external magnet R more effectively than Embodiments A1 and A2, in which only one of the first cylindrical shielding member 13a or the second cylindrical shielding member 13b is attached. It is obvious that these experimental results are the same even when the external magnet R is placed close to other nearby positions D2 and D3 (nearby positions other than the position where the switch device P is attached).

[0050] According to the throttle operating device T of this embodiment, the magnetic shielding member 13 has a plurality of cylindrical shielding members (first cylindrical shielding member 13a and second cylindrical shielding member 13b) which are cylindrical members attached surrounding the detection sensor 11, and the plurality of cylindrical shielding members (first cylindrical shielding member 13a and second cylindrical shielding member 13b) are attached so as to overlap on substantially the same plane K as the detection surface Q of the detection sensor 11, so that unintended magnetism from the outside can be effectively shielded and false detection of the detection sensor 11 due to the influence of external magnetism can be more reliably suppressed.

[0051] Furthermore, the cylindrical shielding member according to this embodiment comprises a first cylindrical shielding member 13a attached to the inner perimeter surrounding the detection sensor 11, and a second cylindrical shielding member 13b attached to the outer perimeter surrounding the detection sensor 11. Since the first cylindrical shielding member 13a and the second cylindrical shielding member 13b are attached to the inside and outside of the detection sensor 11, respectively, the first cylindrical shielding member 13a and the second cylindrical shielding member 13b can more effectively shield against unintended magnetic fields from the outside.

[0052] Furthermore, the case member 12 according to this embodiment has a first fitting groove 12a formed on one surface F1 into which the first cylindrical shielding member 13a is fitted, and a second fitting groove 12b formed on the other surface F2 into which the second cylindrical shielding member 13b is fitted. Therefore, the first cylindrical shielding member 13a and the second cylindrical shielding member 13b can be placed on one surface F1 and the other surface F2 of the case member 12, respectively.

[0053] Furthermore, according to the throttle operating device T of this embodiment, the first cylindrical shielding member 13a fitted into the first fitting groove 12a and the second cylindrical shielding member 13b fitted into the second fitting groove 12b have an overlapping portion α, and the overlapping portion α includes a plane K that is substantially the same as the detection surface Q of the detection sensor 11. Therefore, external magnetic fields can be reliably shielded within a predetermined shielding range formed by the overlapping portion α.

[0054] In addition, according to the throttle operating device T of this embodiment, a sealing member 9 is provided to seal the case member 12, and since the sealing member 9 is attached at a position spaced apart (shifted) from the overlap portion α, magnetic shielding by the magnetic shielding member 13 can be performed while maintaining the sealing structure, and magnetic shielding by the magnetic shielding member 13 and sealing by the sealing member 9 can be reliably performed.

[0055] Furthermore, since the cylindrical shielding members (first cylindrical shielding member 13a and second cylindrical shielding member 13b) according to this embodiment have notches (13aa, 13ba) in part, wiring h extending from the detection sensor 11 can pass through the notches (13aa, 13ba), thereby improving the degree of freedom in layout near the magnetic shielding member 13.

[0056] Furthermore, the magnetic shielding member 13 according to this embodiment has a lid-shaped shielding member 13c that closes the opening of the cylindrical shielding member (second cylindrical shielding member 13b) and covers the upper part of the detection sensor 11 to shield from external magnetism. Therefore, external magnetism from the opening of the cylindrical shielding member (second cylindrical shielding member 13b) to the detection sensor 11 can be reliably shielded. Note that the first cylindrical shielding member 13a and the second cylindrical shielding member 13b may be cylindrical members with bottoms, and the lid-shaped shielding member 13c may be omitted.

[0057] Although the throttle operating device T according to this embodiment has been described above, the present invention is not limited thereto. For example, it may also be equipped with three or more cylindrical shielding members, and may be cylindrical, rectangular, or of an irregular shape. Furthermore, it may be applied to devices equipped with other operating means such as a throttle grip in addition to the throttle lever 2. Moreover, although the throttle operating device T according to this embodiment is applied to vehicles such as ATVs and buggies, it may also be applied to other vehicles such as ships and snowmobiles. [Industrial applicability]

[0058] The present invention can also be applied to products with different external shapes or those with added functions, provided they are of a similar nature. [Explanation of symbols]

[0059] 1 Fixing member 1a Regulatory Department 1b Mounting groove 1c through hole 1d Locking part 1e Mounting recess 2. Throttle lever (operating mechanism) 2a Protrusion 3 Cover component 4 Holding member 5 Rotating Member 5a Mounting part 5b Locking part 6. Mounting components 7. Means for imparting resistance 8. Coil spring (biasing means) 9. Sealing member 10 circuit boards 11 Detection Sensors 12 Case components 12a 1st insertion groove 12b 2nd insertion groove 12c mounting part 12d Fixed part 12e Arm section 13 Magnetic shielding member 13a First cylindrical shielding member 13aa Notch 13b Second cylindrical shielding member 13ba Notch 13c Cover-shaped shielding member 14 Protective components H Handlebars L shaft member M Magnet (means of generating magnetism) S Return Spring One end of Sa Sb other end Na mounting screws Nb Mounting Screws W Washer n1 Mounting Screw n2 mounting screws Y Integrated component T Throttle control device P Switch Device Pa switch knob F1 One side F1a Pressing surface F2 The other side Q Detection surface K almost the same plane

Claims

1. A means for controlling the throttle, A magnetic field generating means that generates magnetism and rotates according to the amount of operation of the operating means, A detection sensor having a detection surface for detecting magnetic changes caused by the rotation of the magnetic generating means, and for detecting the amount of operation of the operating means, A magnetic shielding member is attached around the aforementioned detection sensor and is capable of shielding against external magnetic fields. A case member to which the detection sensor and magnetic shielding member are attached, A throttle control device comprising the following, capable of controlling the drive source of a vehicle based on the amount of operation of the operating means detected by the detection sensor, The throttle operating device is characterized in that the magnetic shielding member has a plurality of cylindrical shielding members, each consisting of a cylindrical member mounted surrounding the detection sensor, and the plurality of cylindrical shielding members are mounted so as to overlap substantially on the same plane as the detection surface of the detection sensor.

2. The throttle operating device according to claim 1, wherein the cylindrical shielding member comprises a first cylindrical shielding member attached to the inner circumference surrounding the detection sensor and a second cylindrical shielding member attached to the outer circumference surrounding the detection sensor, and the first cylindrical shielding member and the second cylindrical shielding member are attached to the inside and outside of the detection sensor, respectively.

3. The throttle operating device according to claim 2, characterized in that the case member has a first fitting groove formed on one surface for fitting the first cylindrical shielding member, and a second fitting groove formed on the other surface for fitting the second cylindrical shielding member.

4. The throttle operating device according to claim 3, characterized in that the first cylindrical shielding member fitted into the first fitting groove and the second cylindrical shielding member fitted into the second fitting groove have an overlapping portion, and the overlapping portion includes a plane substantially identical to the detection surface of the detection sensor.

5. The throttle operating device according to claim 4, further comprising a sealing member for sealing the case member, wherein the sealing member is mounted at a position spaced apart from the overlap portion.

6. The throttle operating device according to claim 1, characterized in that the cylindrical shielding member has a notch in part.

7. The throttle operating device according to claim 1, characterized in that the magnetic shielding member has a lid-shaped shielding member that closes the opening of the cylindrical shielding member and covers the upper part of the detection sensor to shield from external magnetism.

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