Throttle device

Abstract

To provide a throttle device that enables easy attachment of a backlash spring and can improve efficiency of attachment work.SOLUTION: A throttle device includes: a cooperative member 2 that rotates in cooperation with a throttle grip; a rotating member 3 that rotates together with a magnet m; a magnetism sensor 5 that detects a rotating angle of the rotating member 3; a case member 1 that rotatably holds the cooperative member 2 and the rotating member 3; a cover member 11 that covers the cooperative member 2 and the rotating member 3; and a backlash spring 13 that applies energizing force to the rotating direction of the rotating member 3 to reduce backlash between the cooperative member 2 and the rotating member 3. The backlash spring 13 comprises a return spring mounted to the rotating member 3 and has one end 13a locked on the rotating member 3 and the other end 13b extending to an outer side of the cover member 11 and locked while receiving a return action.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a throttle device in which a drive source of a vehicle is controlled based on a rotational operation angle of a throttle grip. [Background technology]

[0002] In recent motorcycles, a configuration has become widespread in which a sensor electrically detects the rotation angle of the throttle grip and sends the detected value as an electrical signal to an electronic control device mounted on the motorcycle (see, for example, Patent Document 1).The electronic control device then performs a predetermined calculation based on the detection signal, and the ignition timing of the engine or the opening and closing of the throttle valve is controlled based on the calculation results.

[0003] Such conventional throttle devices comprise an interlocking member that rotates in conjunction with the throttle grip, a rotating member to which a magnet is attached and that rotates together with the magnet in accordance with the rotation angle of the interlocking member, and detection means for detecting magnetic changes in the magnet accompanying the rotation of the rotating member and detecting the rotation angle of the rotating member.The device also includes a backlash spring that applies a biasing force in the rotational direction of the rotating member to reduce backlash between the interlocking member and the rotating member. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2015-96345 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the above-mentioned conventional throttle device, when assembling the backlash spring, the rotating member was applied with a biasing force while the gear of the interlocking member was engaged with the gear of the rotating member, and then the cover member was used to cover the rotating member, which made the assembly work difficult and resulted in poor workability.

[0006] The present invention has been made in view of the above circumstances, and has an object to provide a throttle device in which a backlash spring can be easily assembled and the workability during assembly can be improved. [Means for solving the problem]

[0007] The invention described in claim 1 is a throttle device comprising an operating means for operating a throttle, an interlocking member which rotates in conjunction with the operating means, a rotating member to which a magnet is attached and which rotates together with the magnet according to the rotation angle of the interlocking member, a detection means which detects magnetic changes in the magnet accompanying the rotation of the rotating member and detects the rotation angle of the rotating member, a case member which rotatably holds the interlocking member and the rotating member, a cover member which is attached to the case member and covers the interlocking member and the rotating member, and a backlash spring which applies a biasing force in the rotational direction of the rotating member to reduce backlash between the interlocking member and the rotating member, the amount of operation of the operating means being detected based on the rotation angle of the rotating member detected by the detection means, and the drive source of a vehicle is controlled, wherein the backlash spring is comprised of a torsion spring attached to the rotating member, one end of which is engaged with the rotating member and the other end of which extends to the outside of the cover member and is engaged while being subjected to a torsional action.

[0008] The invention described in claim 2 is characterized in that, in the throttle device described in claim 1, it is provided with an arc-shaped cutout portion formed in the cover member that allows the other end of the backlash spring to move when a torsional action is applied to the other end, and a locking member that is attached to the outside of the cover member that moves the other end of the backlash spring to apply a torsional action and locks the other end of the backlash spring to which a torsional action has been applied.

[0009] The invention described in claim 3 is characterized in that, in the throttle device described in claim 2, the locking member is fixed in a state in which a spring force is applied to the backlash spring by rotating around an axis member which is the rotation axis of the rotating member while locking the other end of the backlash spring.

[0010] The invention described in claim 4 is characterized in that, in the throttle device described in claim 1, the rotating member is configured to have a gear portion having a gear that meshes with a gear formed on the interlocking member, and a cylindrical portion extending cylindrically from the gear portion, the magnet is attached to the tip end of the cylindrical portion, and a spring mounting recess for accommodating the backlash spring is formed from the side of the gear portion toward the cylindrical portion. Effect of the Invention

[0011] According to the invention of claim 1, the backlash spring comprises a torsion spring attached to the rotating member, one end of which is engaged with the rotating member and the other end of which extends to the outside of the cover member and is engaged while being subjected to a torsional action. This makes it possible to easily assemble the backlash spring, thereby improving the workability during assembly.

[0012] According to the invention of claim 2, there is provided an arc-shaped cutout portion formed in the cover member which allows movement of the other end of the backlash spring when a torsion action is applied to the other end of the backlash spring, and a locking member attached to the outside of the cover member which moves the other end of the backlash spring to apply a torsion action and locks the other end of the backlash spring to which a torsion action has been applied. Therefore, a biasing force can be applied to the backlash spring from the outside of the cover member using the locking member, and workability during assembly can be further improved.

[0013] According to the invention of claim 3, the locking member is fixed in a state in which a biasing force is applied to the backlash spring by rotating about the shaft member which is the rotation axis of the rotating member while locking the other end of the backlash spring. Therefore, the locking member can be rotated using the shaft member which is the rotation axis of the rotating member, making it easy to apply a biasing force to the backlash spring.

[0014] According to the invention of claim 4, the rotating member is configured to have a gear portion having a gear that meshes with a gear formed on the interlocking member, and a cylindrical portion extended cylindrically from the gear portion, and a magnet is attached to the tip of the cylindrical portion, and a spring mounting recess for accommodating a backlash spring is formed from the side of the gear portion toward the cylindrical portion. Therefore, the magnet can be disposed in the vicinity of the detection means while the backlash spring can be disposed in the vicinity of the cover member, and the other end of the backlash spring can be easily extended to the outside of the cover member. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is an external view showing a throttle device according to an embodiment of the present invention; [Diagram 2] FIG. 3 is an exploded perspective view of the main components of the throttle device; [Diagram 3] FIG. 3 is a three-view diagram showing the throttle operation detection unit of the throttle device. [Figure 4] Cross-sectional view of line IV-IV in Figure 3 [Diagram 5] FIG. 2 is a plan view showing a state in which a cover member in a throttle operation detection unit of the throttle device is removed. [Figure 6] FIG. 2 is an exploded perspective view of the throttle operation detection unit; [Figure 7] FIG. 2 is an exploded perspective view of the throttle operation detection unit; [Figure 8] FIG. 1 is an exploded perspective view of some components of a throttle operation detection unit. [Figure 9] FIG. 1 is an exploded perspective view of some components of a throttle operation detection unit. [Figure 10] A three-sided view showing the case member of the throttle operation detection unit. [Figure 11] A three-dimensional view showing the rotating member of the throttle operation detection unit. [Figure 12] 3A and 3B are views showing a substrate on which a magnetic sensor (detection means) of the throttle operation detection unit is formed. [Figure 13] FIG. 2 is a two-sided view showing a cover member of the throttle operation detection unit. [Figure 14] FIG. 2 is a two-sided view showing a side part of a magnetic shielding member in the throttle operation detection unit. [Figure 15] FIG. 3 is a three-view diagram showing the bottom part of the magnetic shielding member in the throttle operation detection unit. [Figure 16] 3A and 3B are three-sided views showing a locking member in the throttle operation detection unit; [Figure 17] FIG. 4 is a schematic diagram showing the operation of a locking member in the throttle operation detection unit; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. The throttle device of this embodiment is intended to detect the rotational operating angle (operation amount) of a throttle grip (operating means) attached to the handlebar H of a motorcycle and transmit the detection signal to an electronic control device such as an ECU mounted on the motorcycle to control the drive source of the vehicle. As shown in Figures 1 to 4, the throttle device is configured to include a switch case C fixed to the handlebar H of the vehicle, a throttle operation detection unit Y mounted within the switch case C, and operating parts t1 to t3 attached to the switch case C and capable of operating various electrical equipment mounted on the vehicle.

[0017] The switch case C is made by molding a predetermined material, and is constructed by fitting together a front switch case Ca and a rear switch case Cb, each of which has a split shape, as shown in Fig. 2. Openings are formed at predetermined positions in the switch case C, and operation knobs constituting the operation units (t1 to t3) are attached to each opening, making it possible to operate any electrical equipment installed in the vehicle.

[0018] More specifically, the operation unit t1 has a seesaw-type operation knob that can be swung and a switch unit that is electrically turned on and off in response to operation of the operation knob, the operation unit t2 has a button-type operation knob that can be pressed and a switch unit that is electrically turned on and off in response to operation of the operation knob, and the operation unit t3 has a seesaw-type operation knob that can be swung and a switch unit that is electrically turned on and off in response to operation of the operation knob.

[0019] As shown in Figures 3 to 9, the throttle operation detection unit Y is composed of a throttle grip G (operation means), an interlocking member 2, a rotating member 3 to which a magnet m is attached, a magnetic sensor 5 (detection means) formed on a substrate 4, a case member 1 that rotatably holds the interlocking member 2 and the rotating member 3, a forward rotation return spring 6 and a reverse rotation return spring 7, a friction imparting member 9, a cover member 11, a magnetic shielding member 12, a backlash spring 13, and a locking member 14.

[0020] The throttle grip G is attached to the tip (right end) of the handlebar H of the vehicle, and is disposed in a position adjacent to the switch case C. Note that instead of the throttle grip G, other operating means for the driver to operate the throttle may be used, such as a rocking lever or a slide switch that can be operated with any amount of operation.

[0021] The case member 1 rotatably holds the interlocking member 2 and the rotating member 3, and as shown in Figures 8 to 10, is formed with a first accommodating portion 1a to which the interlocking member 2 is rotatably attached, a second accommodating portion 1b to which the rotating member 3 is rotatably attached, a third accommodating portion 1c to which the magnetic sensor 5 is attached, a fourth accommodating portion 1d formed continuously with the third accommodating portion 1c, a fifth accommodating portion 1e to which the friction imparting member 9 and the coil spring 10 are attached, and an insertion portion 1f.

[0022] Specifically, a first accommodating section 1a, a second accommodating section 1b and a fifth accommodating section 1e are formed on one side of the case member 1, and an interlocking member 2, a rotating member 3, a friction imparting member 9 and a coil spring 10 are respectively attached thereto. When the interlocking member 2 accommodated in the first accommodating section 1a rotates in conjunction with the rotation operation of the throttle grip G, the rotating member 3 accommodated in the second accommodating section 1b rotates in conjunction with it, and the friction imparting member 9 biased by the coil spring 10 comes into contact with and slides against the interlocking member 2, thereby imparting friction (frictional force) to the throttle grip G when it is operated.

[0023] Further, a third housing section 1c and a fourth housing section 1d are formed in series on the other surface of the case member 1, and the board 4 is attached across the third housing section 1c and the fourth housing section 1d which are formed in series. The board 4 according to this embodiment is made of a printed circuit board on which a predetermined electric circuit is formed, and a magnetic sensor 5 is attached to a portion of the board 4 located in the third housing section 1c, and a connection terminal T extending from the case member 1 can be inserted and formed to protrude into a hole portion 4c of the board 4 located in the fourth housing section 1d.

[0024] Furthermore, an arc-shaped fitting portion 1f is formed on the side of the third housing portion 1c in the case member 1 as shown in Fig. 9, and the side part 12a of the magnetic shielding member 12 can be fitted into the fitting portion 1f. When the side part 12a is fitted into the fitting portion 1f, the side part 12a is positioned to the side of the magnet m and the magnetic sensor 5 as shown in Fig. 4, making it possible to shield against external magnetism.

[0025] The interlocking member 2 is rotatable in conjunction with the throttle grip G, and is rotatably attached to the first housing portion 1a of the case member 1. As shown in Fig. 5, the interlocking member 2 according to this embodiment is configured to have an engagement portion 2a that can engage and lock with a protrusion (not shown) formed at the base end of the throttle grip G, and a gear portion 2b formed over a predetermined range. When the driver rotates the throttle grip G, the interlocking member 2 is rotatable in conjunction with the throttle grip G.

[0026] The rotating member 3 rotates together with the magnet m according to the rotation angle of the interlocking member 2, and is rotatably attached to the second housing portion 1b of the case member 1. As shown in Figures 8 and 11, the rotating member 3 according to this embodiment is formed with a gear portion 3a that meshes with the gear portion 2b of the interlocking member 2, a cylindrical portion 3b that extends cylindrically from the gear portion 3a, a magnet mounting recess 3c that is formed at the tip of the cylindrical portion 3b and to which the magnet m is attached, and a spring mounting recess 3d that can accommodate a backlash spring 13.

[0027] The forward rotation return spring 6 is a torsion coil spring that biases the interlocking member 2 toward its initial position when the throttle grip G rotates forward. Specifically, the forward rotation return spring 6 is assembled with one end engaged with the case member 1 and the other end engaged with the interlocking member 2, and when the throttle grip G is rotated forward, the interlocking member 2 rotates against the biasing force of the forward rotation return spring 6, so that the biasing force is transmitted to the throttle grip G, and a force acts to return the throttle grip G to its initial position.

[0028] The reverse return spring 7 is attached to the interlocking member 2 and is made up of a pair of coil springs with one end attached in contact with a spring receiving portion 8a (see FIG. 6) formed on the receiving member 8, and serves to bias the interlocking member 2 toward its initial position when the throttle grip G is rotated in reverse. Specifically, when the throttle grip G is rotated in reverse, the reverse return spring 7 engages the protruding portion 8b of the receiving member 8 with a predetermined portion of the case member 1, so that the receiving member 8 stops while the interlocking member 2 rotates. As a result, the interlocking member 2 rotates against the biasing force of the reverse return spring 7, and the biasing force is transmitted to the throttle grip G, acting to return the throttle grip G to its initial position.

[0029] The magnetic sensor 5 (detection means) detects magnetic changes (changes in the direction of the magnetic field) of the magnet m accompanying the rotation of the rotating member 3, and detects the rotation angle of the rotating member 3, and is capable of detecting the rotation angle of the throttle grip G. Specifically, the magnetic sensor 5 is capable of obtaining an output voltage corresponding to the magnetic field changes (changes in magnetic flux density) of the magnet m, and is configured, for example, with a Hall element, which is a magnetic sensor utilizing the Hall effect (specifically, a linear Hall IC capable of obtaining an output voltage proportional to the magnetic field (magnetic flux density) of the magnet m).

[0030] 12, the substrate 4 is integrally formed with a sensor area 4a to which the magnetic sensor 5 is attached and a connection terminal area 4b in which a hole portion 4c through which the connection terminal T protrudes is formed, and when the substrate 4 is attached to the case member 1, the sensor area 4a is located in the third housing portion 1c and the connection terminal area 4b is located in the fourth housing portion 1d. The connection terminal T is electrically connected to a wiring extending from the vehicle side, so that the detection value of the magnetic sensor 5 can be transmitted to the vehicle side.

[0031] As a result, when the throttle grip G rotates and the interlocking member 2 and the rotating member 3 rotate by a rotation angle corresponding to the rotation, the output signal of the magnetic sensor 5 increases or decreases due to a change in the magnetic field generated by the magnet m attached to the rotating member 3, and the rotation operation angle of the throttle grip G can be detected based on the output signal. This detection signal is sent to an ECU equipped in the motorcycle via a wire connected to a connection terminal T of the board 4, and control of the drive source (engine or motor) based on the detection signal (output control based on the rotation angle of the throttle grip G) is performed.

[0032] The cover member 11 is made of a plate-like member that is attached to one surface of the case member 1 and covers the interlocking member 2 and the rotating member 3, and as shown in FIG. 13, is formed with an insertion hole 11a through which the shaft member L can be inserted, an arc-shaped cutout portion 11b through which the other end 13b of the backlash spring 13 is inserted and which allows movement of the other end 13b when a torsion action is applied to the other end 13b of the backlash spring 13, and a screw hole 11c through which a screw n3 that fixes the locking member 14 can be inserted.

[0033] The backlash spring 13 applies a biasing force in the rotational direction of the rotating member 3 to reduce backlash between the interlocking member 2 and the rotating member 3, and is made of a torsion spring having one end 13a and the other end 13b formed on both ends of a coil portion 13c as shown in Figures 6 to 8. The backlash spring 13 according to this embodiment is housed in the spring mounting recess 3d of the rotating member 3, with one end 13a locked to the rotating member 3 and the other end 13b extending to the outside of the cover member 11 via the cutout portion 11b and locked by the locking member 14 while being subjected to a torsional action.

[0034] Specifically, the gear portion 3a of the rotating member 3 is meshed with the gear portion 2b of the interlocking member 2, and the rotating member 3 and the interlocking member 2 are assembled to the case member 1, and then the backlash spring 13 is accommodated in the spring mounting recess 3d of the rotating member 3 and one end 13a is engaged with the rotating member 3. Then, after the shaft member L, which is the rotating shaft of the rotating member 3, is assembled to the case member 1, the protruding end side of the shaft member L is inserted into the insertion hole 11a of the cover member 11, and the other end 13b of the backlash spring 13 is inserted into the notch portion 11b, and the cover member 11 is fixed to the case member 1 by the screw n2. At this time, the backlash spring 13 is in a free state in which no urging force is applied, and therefore, an urging force is applied by the locking member 14.

[0035] The locking member 14 is attached to the outside of the cover member 11, and moves the other end 13b of the backlash spring 13 to impart a torsional action, and locks the other end 13b of the backlash spring 13 to which the torsional action has been imparted. The locking member 14 according to this embodiment is rotatable about the shaft member L, which is the rotation shaft of the rotating member 3, while locking the other end 13b of the backlash spring 13, and is fixed at a predetermined position of the cover member 11. Specifically, as shown in Figs. 6 to 8 and 16, the locking member 14 has a center hole 14a through which the protruding end of the shaft member L can be inserted, a locking groove 14b through which the other end 13b of the backlash spring 13 can be locked, and a screw hole 14c through which the screw n3 can be inserted.

[0036] After the cover member 11 is attached to the case member 1, as shown in Fig. 17(a), the tip of the shaft member L protruding from the insertion hole 11a is inserted into the central hole 14a of the locking member 14, and the other end 13b of the backlash spring 13 (in a free state where no biasing force is applied) protruding from the cutout portion 11b is locked in the locking groove 14b of the locking member 14. Then, as shown in Fig. 17(b), when the locking member 14 is rotated around the shaft member L, the other end 13b locked in the locking groove 14b moves in an arc shape, and a torsion action is applied to the backlash spring 13.

[0037] 17(c), the cover member 11 is rotated until the screw hole 14c of the locking member 14 matches the screw hole 11c of the cover member 11, and the screw n3 is inserted through the screw holes 11c and 14c and screwed into them, thereby fixing the locking member 14 to the cover member 11. In this manner, by rotating and fixing the locking member 14, a torsion action is applied to the backlash spring 13, and the state in which the urging force is applied to the rotating member 3 can be maintained.

[0038] In this way, the backlash spring 13 has one end 13a engaged with the rotating member 3 while the other end 13b is engaged while being subjected to a torsional action by the locking member 14, so that a biasing force can be applied in the rotational direction of the rotating member 3, and this biasing force can reduce the backlash between the gear portion 3a of the rotating member 3 and the gear portion 2b of the interlocking member 2.

[0039] The magnetic shielding member 12 is made of a magnetic material (a ferromagnetic material such as iron) and is positioned around the magnet m and the magnetic sensor 5 to shield (magnetically shield) against magnetic fields from the outside (outside the throttle device). As shown in Figures 6, 7 and 9, it is composed of a side part 12a which is open at both ends and covers the sides of the magnet m and the magnetic sensor 5, and a plate-shaped bottom part 12b which covers the bottom opening of the side part 12a.

[0040] The side part 12a is obtained by, for example, rolling a plate-shaped ferromagnetic material (processing to follow the outer peripheral surface of a roll), and is made of a cylindrical member having a C-shape in plan view, curved in an arc shape with a predetermined curvature as a whole, with both ends (left and right ends in the figure) open and a notch K formed in a part of the side. As described above, the side part 12a is fitted into the fitting part 1f of the case member 1, and is positioned to the sides of the magnet m and the magnetic sensor 5 so as to be able to shield from external magnetism.

[0041] The bottom part 12b is made of a plate-shaped ferromagnetic material as shown in Fig. 15, and is configured to be attached to the case member 1 with a screw n1 as shown in Fig. 3. When the bottom part 12b is attached to the case member 1, it is configured to close one open end of the side part 12a as shown in Fig. 4, so that the magnet m and the magnetic sensor 5 are surrounded by the side part 12a and the bottom part 12b.

[0042] According to the above embodiment, the backlash spring 13 is made of a torsion spring attached to the rotating member 3, and one end 13a is engaged with the rotating member 3 while the other end 13b extends to the outside of the cover member 11 and is engaged while being subjected to a torsional action. Therefore, after the cover member 11 is assembled to the case member 1, a biasing force is imparted to the backlash spring 13, making it possible to easily assemble the backlash spring 13 and improving the workability during assembly.

[0043] In addition, the cover member 11 is provided with an arc-shaped cutout portion 11b which allows movement of the other end 13b of the backlash spring 13 when a torsion action is applied to the other end 13b, and a locking member 14 which is attached to the outside of the cover member 11 and moves the other end 13b of the backlash spring 13 to apply a torsion action and locks the other end 13b of the backlash spring 13 to which a torsion action has been applied. Therefore, a biasing force can be applied to the backlash spring 13 from the outside of the cover member 11 using the locking member 14, and workability during assembly can be further improved.

[0044] Furthermore, the locking member 14 in this embodiment is fixed in a state in which a biasing force is applied to the backlash spring 13 by rotating about the shaft member L, which is the rotation axis of the rotating member 3, while locking the other end 13b of the backlash spring 13. Therefore, the locking member 14 can be rotated using the shaft member L, which is the rotation axis of the rotating member 3, and the biasing force can be easily applied to the backlash spring 13.

[0045] Furthermore, the rotating member 3 in this embodiment is configured to have a gear portion 3a having a gear formed therein that meshes with the gear formed on the interlocking member 2, and a cylindrical portion 3b extending cylindrically from the gear portion 3a. A magnet m is attached to the tip of the cylindrical portion 3b, and a spring mounting recess 3d for accommodating a backlash spring 13 is formed from the side surface of the gear portion 3a toward the cylindrical portion 3b. Therefore, the backlash spring 13 can be disposed close to the cover member 11 while the magnet m is disposed in the vicinity of the magnetic sensor 5, and the other end 13b of the backlash spring 13 can be easily extended to the outside of the cover member 11.

[0046] Although the present embodiment has been described above, the present invention is not limited to this, and for example, the magnetic shielding member 12 may not be provided, and the other end 13b of the backlash spring 13 may be locked by a means other than the locking member 14. Note that, although the present embodiment is attached to the handlebar of a two-wheeled vehicle, it may be attached to other vehicles having handlebars (for example, ATVs, snowmobiles, etc.). Also, the present invention may be applied to vehicles using an internal combustion engine as a drive source, or electric vehicles using a motor as a drive source. [Industrial Applicability]

[0047] The present invention can also be applied to devices with different external shapes or devices with added functions, etc., so long as they have the same gist as the present invention. [Explanation of symbols]

[0048] 1 Case material 1a First storage section 1b Second storage section 1c Third Storage Unit 1d 4th storage section 1e 5th Containment Unit 1f Inset part 2 Interlocking parts 2a Engagement part 2b Gear section 3 Rotating parts 3a Gear section 3b Cylindrical part 3c Magnet mounting recess 3d Spring mounting recess 4. Board 4a Sensor area 4b Connection terminal area 4c hole site 5. Magnetic sensor (detection means) 6 Return spring for forward rotation 7. Reverse return spring 8 Supporting member 8a Spring support 8b Protrusion 9 Friction-imparting member 10 Coil spring 11 Cover member 11a Insertion hole 11b Notch 11c screw hole 11d opening 12 Magnetic shielding material 12a Side parts 12b bottom part 13 Backlash spring 13a one end 13b Other end 13c Coil section 14 Locking member 14a Center hole 14b Locking groove 14c screw hole G Throttle grip (operating means) m magnet C Switch Case Ca Front switch case Cb rear switch case t1~t3 Operation section L shaft member T Connection Terminal Y Throttle operation detection unit

Claims

1. An operating means for operating the throttle; A linking member that rotates in conjunction with the operating means; a rotating member to which a magnet is attached and which rotates together with the magnet in accordance with a rotation angle of the interlocking member; a detection means for detecting a magnetic change of the magnet accompanying the rotation of the rotary member and detecting a rotation angle of the rotary member; a case member that rotatably holds the interlocking member and the rotating member; a cover member attached to the case member to cover the interlocking member and the rotating member; a backlash reduction spring that applies a biasing force in a rotational direction of the rotating member to reduce backlash between the interlocking member and the rotating member; a throttle device for detecting an amount of operation of the operating means based on a rotation angle of the rotating member detected by the detection means, and for controlling a drive source of a vehicle, The backlash spring comprises a torsion spring attached to the rotating member, one end of which is engaged with the rotating member and the other end of which extends to the outside of the cover member and is engaged while being subjected to a torsional action.

2. a circular arc-shaped notch portion formed in the cover member for allowing movement of the other end of the backlash spring when a torsion action is applied to the other end of the backlash spring; a locking member attached to the outside of the cover member, for moving the other end of the backlash spring to impart a torsional action thereto, and for locking the other end of the backlash spring to which the torsional action has been imparted; 2. The throttle device according to claim 1, further comprising:

3. The throttle device according to claim 2, characterized in that the locking member is fixed in a state in which a spring force is applied to the backlash spring by rotating around an axis member which is the rotation axis of the rotating member while locking the other end of the backlash spring.

4. The throttle device according to claim 1, characterized in that the rotating member is composed of a gear portion having a gear that meshes with a gear formed on the interlocking member, and a cylindrical portion extending cylindrically from the gear portion, the magnet is attached to the tip of the cylindrical portion, and a spring mounting recess for accommodating the backlash spring is formed from the side of the gear portion toward the cylindrical portion.

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