Throttle grip device

Abstract

To provide a throttle grip device capable of surely applying an energizing force toward an initial position when rotating a throttle grip, and maintaining operability by suppressing the radial deflection of energizing means.SOLUTION: The throttle grip device includes first biasing means R1 that biases the throttle grip G toward an initial position when the throttle grip G is rotated forward, and second biasing means R2 that biases the throttle grip G toward the initial position when the throttle grip G is rotated backwards, wherein the first biasing means R1 includes a first elastic member S1 and a first compression member D1 that converts the rotational force of an interlocking member 1 into an axial direction and compresses the first elastic member S1 in the axial direction, and the second biasing means R2 has a second elastic member S2 and a second compression member D2 that converts the rotational force of the interlocking member 1 into the axial direction and compresses the second elastic member S2 in the axial direction.SELECTED DRAWING: Figure 3

Description

[Technical Field]

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

[0002] Recently, motorcycles have become popular that are configured to detect the rotation angle of the throttle grip with a sensor and transmit the detected value as an electric signal to an electronic control device or the like mounted on the motorcycle to control the drive source. For example, Patent Document 1 discloses a throttle grip device that is equipped with an inner rotor in the handle pipe of a motorcycle that is linked to the rotation operation of the throttle grip and that can detect the rotation angle of the inner rotor with a magnetic sensor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-7995 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned conventional throttle grip device, the return spring (biasing means) that biases the throttle grip toward its initial position is configured to obtain a biasing force by twisting circumferentially within the handle pipe in response to the rotation of the throttle grip. As a result, when the throttle grip is rotated, the return spring swings radially as it is twisted, which may cause interference with the inner circumferential surface of the handle pipe, resulting in a deterioration in operability.

[0005] The present invention has been made in consideration of the above circumstances, and aims to provide a throttle grip device that can reliably apply a biasing force toward the initial position when the throttle grip is rotated, and that can prevent the biasing means from vibrating radially, thereby maintaining operability. [Means for solving the problem]

[0006] The invention of claim 1 comprises a throttle grip attached to the tip end of a handle pipe of a vehicle, which can be rotated by a driver, and which can rotate in a predetermined direction from an initial position in a forward direction and in a reverse direction opposite to the predetermined direction; an interlocking member which extends within the handle pipe and can rotate in conjunction with the forward and reverse rotation of the throttle grip; first biasing means which biases the throttle grip toward the initial position when the throttle grip rotates in the forward direction; second biasing means which biases the throttle grip toward the initial position when the throttle grip rotates in the reverse direction; and rotation angle detecting means which can detect the rotation angle of the throttle grip by detecting the rotation angle of the interlocking member, A throttle grip device that can control the vehicle's drive source according to the rotation angle of the throttle grip during forward rotation detected by an angle detection means, and can activate or deactivate a specified function of the vehicle when the throttle grip is rotated in the reverse direction, characterized in that the first biasing means has a first elastic member that generates an elastic force when compressed in the axial direction of the interlocking member, and a first compression member that converts the rotational force of the interlocking member into the axial direction and compresses the first elastic member in the axial direction to obtain an urging force, and the second biasing means has a second elastic member that generates an elastic force when compressed in the axial direction of the interlocking member, and a second compression member that converts the rotational force of the interlocking member into the axial direction and compresses the second elastic member in the axial direction to obtain an urging force.

[0007] The invention of claim 2 is characterized in that in the throttle grip device of claim 1, the first biasing means and the second biasing means are arranged side by side in the axial direction of the interlocking member.

[0008] The invention of claim 3 is characterized in that in the throttle grip device of claim 1, the first elastic member and the second elastic member are each made of a compression coil spring attached to the interlocking member.

[0009] The invention described in claim 4 is characterized in that, in the throttle grip device described in claim 1, the first compression member and the second compression member have cam surfaces inclined at a predetermined angle relative to the axial direction of the interlocking member, and when the throttle grip rotates forward or backward, the cam action of the cam surfaces causes the members to move in the axial direction of the interlocking member, compressing the first elastic member or the second elastic member.

[0010] The invention described in claim 5 is characterized in that, in the throttle grip device described in claim 1, the first compression member and the second compression member are fitted into a screw shape that extends spirally in the axial direction on the outer surface of the interlocking member, and when the throttle grip rotates forward or backward, they move along the screw shape to compress the first elastic member or the second elastic member.

[0011] The invention described in claim 6 is characterized in that, in the throttle grip device described in claim 1, it is provided with a cover member attached to cover the interlocking member, and the first compression member and the second compression member are fitted into a screw shape that extends spirally in the axial direction on the inner surface of the cover member, and when the throttle grip is rotated forward or backward, they move along the screw shape to compress the first elastic member or the second elastic member.

[0012] The invention of claim 7 is characterized in that, in the throttle grip device of claim 1, a tip fixing member is provided on the tip side of the throttle grip to which a balancer having a predetermined weight can be attached.

[0013] The invention described in claim 8 is characterized in that, in the throttle grip device described in claim 1, the first biasing means is arranged on the base end side of the throttle grip, and the second biasing means is arranged on the tip side of the throttle grip.

[0014] The invention described in claim 9 is characterized in that, in the throttle grip device described in claim 1, the first biasing means is arranged on the tip side of the throttle grip, and the second biasing means is arranged on the base end side of the throttle grip.

[0015] The invention described in claim 10 is characterized in that, in the throttle grip device described in claim 1, the first biasing means and the second biasing means are such that the first elastic member and the second elastic member are attached adjacent to each other in the axial direction of the interlocking member, and the first compression member and the second compression member are attached to both sides thereof, respectively. [Effects of the Invention]

[0016] According to the invention of claim 1, the first biasing means includes a first elastic member that generates an elastic force when compressed in the axial direction of the interlocking member, and a first compression member that converts the rotational force of the interlocking member into the axial direction and compresses the first elastic member in the axial direction to obtain the biasing force, while the second biasing means includes a second elastic member that generates an elastic force when compressed in the axial direction of the interlocking member, and a second compression member that converts the rotational force of the interlocking member into the axial direction and compresses the second elastic member in the axial direction to obtain the biasing force. Thus, the invention of claim 1 can reliably apply a biasing force toward the initial position when the throttle grip is rotated, and can maintain operability by suppressing radial vibration of the biasing means.

[0017] According to the invention of claim 2, the first biasing means and the second biasing means are arranged side by side in the axial direction of the interlocking member, so that the first biasing means and the second biasing means can be easily arranged even in a handle pipe having a relatively small inner diameter.

[0018] According to the invention of claim 3, the first elastic member and the second elastic member are made of compression coil springs respectively attached to the interlocking member, so that they can be reliably compressed in accordance with the compression forces of the first compression member and the second compression member, and the necessary elastic force can be generated.

[0019] According to the invention of claim 4, the first compression member and the second compression member have cam surfaces inclined at a predetermined angle relative to the axial direction of the interlocking member, and when the throttle grip rotates forward or backward, they move in the axial direction of the interlocking member due to the cam action of the cam surfaces. As a result, when the throttle grip rotates forward or backward, the cam action of the cam surfaces compresses the first elastic member or the second elastic member, and a reliably urging force toward the initial position can be obtained.

[0020] According to the invention of claim 5, the first compression member and the second compression member are fitted into a screw thread extending helically in the axial direction on the outer circumferential surface of the interlocking member, and move along the screw thread when the throttle grip rotates forward or backward. As a result, when the throttle grip rotates forward or backward, the screw thread formed on the interlocking member is used to compress the first elastic member or the second elastic member, and a biasing force toward the initial position can be reliably obtained.

[0021] According to the invention of claim 6, the first compression member and the second compression member are fitted into a screw thread extending helically in the axial direction on the inner peripheral surface of the cover member, and move along the screw thread when the throttle grip is rotated forward or backward. As a result, when the throttle grip is rotated forward or backward, the screw thread formed on the cover member is used to compress the first elastic member or the second elastic member, and a biasing force toward the initial position can be reliably obtained.

[0022] According to the invention of claim 7, a tip fixing member is provided on the tip side of the throttle grip to which a balancer having a predetermined weight can be attached, so that the vibration transmitted from the drive source of the motorcycle to the throttle grip can be adjusted by the weight of the balancer, thereby improving operability.

[0023] According to the invention of claim 8, the first biasing means is disposed on the base end side of the throttle grip, and the second biasing means is disposed on the tip end side of the throttle grip, so that the first biasing means and the second biasing means can be disposed efficiently within a limited space.

[0024] According to the invention of claim 9, the first biasing means is disposed on the tip side of the throttle grip, and the second biasing means is disposed on the base end side of the throttle grip, so that the first biasing means and the second biasing means can be disposed efficiently within a limited space.

[0025] According to the invention of claim 10, the first and second biasing means have the first and second elastic members attached adjacent to each other in the axial direction of the interlocking member, with the first and second compression members attached to both sides thereof, respectively. This makes it possible to make the compression direction of the first compression member and the compression direction of the second compression member face each other, and to share a receiving member that receives the compression force. [Brief explanation of the drawings]

[0026] [Figure 1] FIG. 1 is a perspective view showing the appearance of a throttle grip device according to a first embodiment of the present invention; [Figure 2] Three-view diagram showing the throttle grip device [Figure 3] Cross section of line III-III in Figure 2 [Figure 4] Cross section of line IV-IV in Figure 2 [Figure 5] FIG. 2 is a perspective view showing the main components of the throttle grip device. [Figure 6] FIG. 2 is an exploded perspective view showing the main components of the throttle grip device. [Figure 7] 1A and 1B are a plan view and a front view showing a housing member in the throttle grip device; [Figure 8] 1A and 1B are a plan view and a front view showing a tip fixing member in the throttle grip device; [Figure 9] 1A is a schematic diagram showing the throttle grip device in a state where the throttle grip is in the initial position, FIG. 1B is a schematic diagram showing the state of the first biasing means when the throttle grip is rotated forward, and FIG. 1C is a schematic diagram showing the state of the second biasing means when the throttle grip is rotated backward. [Figure 10] FIG. 10 is a perspective view showing the main configuration of a throttle grip device according to a second embodiment of the present invention; [Figure 11] FIG. 10 is a perspective view showing the throttle grip device with the cover member removed. [Figure 12] FIG. 10 is a perspective view showing an interlocking member having a threaded shape in the throttle grip device. [Figure 13] 1A is a schematic diagram showing the throttle grip device in a state where the throttle grip is in the initial position, FIG. 1B is a schematic diagram showing the state of the first biasing means when the throttle grip is rotated forward, and FIG. 1C is a schematic diagram showing the state of the second biasing means when the throttle grip is rotated backward. [Figure 14] FIG. 10 is a perspective view showing the main configuration of a throttle grip device according to a third embodiment of the present invention; [Figure 15] FIG. 10 is a perspective view showing the throttle grip device with the cover member removed. [Figure 16] (a) is an external view of the cover member of the throttle grip device, and (b) is a cross-sectional view taken along the line bb in (a). [Figure 17] 1A is a schematic diagram showing the throttle grip device in a state where the throttle grip is in the initial position, FIG. 1B is a schematic diagram showing the state of the first biasing means when the throttle grip is rotated forward, and FIG. 1C is a schematic diagram showing the state of the second biasing means when the throttle grip is rotated backward. DETAILED DESCRIPTION OF THE INVENTION

[0027] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. The throttle grip device of the first embodiment is for detecting the rotation angle of a throttle grip G attached to a handle pipe H (handlebar) of a motorcycle and transmitting the detection signal to an electronic control device mounted on the motorcycle, and as shown in Figures 1 to 6, is configured to include a throttle grip G, an interlocking member 1, a accommodating member 3, a magnetic sensor 4 (rotation angle detection means), a locking member 6, fixing members 7 and 8, a first biasing means R1, a second biasing means R2, and a balancer B.

[0028] The handle pipe H is made of a metal pipe that extends to the motorcycle body, but for ease of explanation, it is shown cut off midway in the drawings. In this embodiment, a case member C is fixed to the handle pipe H, and a throttle grip G is attached to a position further forward than the case member C. However, the case member C may not be provided.

[0029] 1 to 4, the throttle grip G is attached to the tip end of the handle pipe H of the vehicle, and can be rotated about its axis by the driver, and can rotate in a forward direction α from an initial position and in a reverse direction β opposite to the predetermined direction. As shown in Figures 3 and 4, the throttle grip G according to this embodiment is configured by fixing a gripping member G1 made of soft resin, synthetic rubber, or the like to the outer peripheral surface of a base member G2 made of, for example, hard resin.

[0030] The interlocking member 1 is made up of a shaft-like member (long member) that extends inside the handle pipe H and can rotate in conjunction with the forward rotation α and reverse rotation β of the throttle grip G, and as shown in Fig. 6, it has a central groove 1a into which the E-ring n3 can be fitted, and insertion holes 1c to 1e into which the fixing pins p1 to p3 can be inserted. In addition, a magnet M is attached to the base end 1b of the interlocking member 1.

[0031] The interlocking member 1 according to this embodiment has a tip fixing member 2 attached to its tip end, and also has a first elastic member S1 and a first compression member D1 constituting the first biasing means R1, a second elastic member S2 and a second compression member D2 constituting the second biasing means R2, and a washer n1 and a washer n2 attached by being inserted through them in the axial direction. As shown in FIG. 8, the tip fixing member 2 is formed with a cam surface 2a and a groove 2c extending in the circumferential direction and into which a fixing pin p2 can be inserted. The washer n1 and the washer n2 constitute a receiving member, with the washer n1 abutting against one surface of the E ring n3 and the washer n2 abutting against the other surface of the E ring n3.

[0032] Furthermore, a screw hole 2b is formed on the tip surface of the tip fixing member 2, into which a mounting screw f for attaching a balancer B can be inserted and screwed. The balancer B has a predetermined weight, and is attached to the tip fixing member 2 with the mounting screw f, and is configured to be positioned on the tip side of the throttle grip G. Note that the balancer B may be connected to another location other than the tip fixing member 2, as long as it is on the tip side of the throttle grip G.

[0033] Furthermore, a locking member 6 is attached to the tip fixing member 2 according to this embodiment. The locking member 6 is formed with a locking portion 6a that locks with the throttle grip G and an insertion hole 6b through which the fixing pin p3 can be inserted. The locking portion 6a has a notched shape that can be circumferentially locked with a locked portion G2a (see FIG. 4) formed at the tip of the base member G2 of the throttle grip G, so that the tip fixing member 2 can rotate in conjunction with the rotation of the throttle grip G.

[0034] The interlocking member 1 and the locking member 6 are connected by inserting the fixing pin p3 into the insertion hole 6b of the locking member 6 and the fixing pin p3 into the groove 2c of the tip fixing member 2 and the insertion hole 1e of the interlocking member 1. As a result, when the throttle grip G is rotated, the interlocking member 1 can rotate about its axis via the locking member 6 and the tip fixing member 2. When the throttle grip G is rotated, the fixing pin p3 passes through the groove 2c and spins freely, so the fixation of the tip fixing member 2 is maintained.

[0035] The accommodating member 3 is fixed to the handle pipe H with a screw n4, and is formed with a cam surface 3a and an accommodating recess 3b for accommodating a substrate 5 (in this embodiment, a flexible substrate bent into an L shape) on which a magnetic sensor 4 (rotation angle detection means) is formed, as shown in Fig. 7. After accommodating the substrate 5 on which the magnetic sensor 4 is formed, the accommodating recess 3b is filled with a waterproof material (not shown) such as resin, and a wire h is extended from the substrate 5 toward the vehicle body side so that a detection signal from the magnetic sensor 4 is transmitted to the vehicle body side.

[0036] The magnetic sensor 4 (rotation angle detection means) is composed of a sensor disposed on an extension of the rotation axis of the interlocking member 1, and is capable of detecting the rotation angle of the throttle grip G by detecting changes in magnetism generated by the magnet M attached to the interlocking member 1. Specifically, the magnetic sensor 4 is capable of obtaining an output voltage corresponding to changes in the magnetic field (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 that can obtain an output voltage proportional to the magnetic field (magnetic flux density) of the magnet M).

[0037] When the interlocking member 1 rotates in the same direction as the throttle grip G rotates forward by an angle α, the magnet M rotates in the same direction and by the same angle together with the interlocking member 1. As a result, the magnetic field of the magnetic sensor 4 changes depending on the rotation angle of the magnet M, so that the magnetic sensor 4 can obtain an output voltage corresponding to the rotation angle, and it is possible to detect the rotation angle of the interlocking member 1 (i.e., the rotation angle of the throttle grip G) based on the output voltage. The rotation angle of the throttle grip G detected in this way is transmitted as an electric signal to a control device (e.g., an ECU (engine control unit)) mounted on the motorcycle, and the vehicle's drive source (engine, motor, etc.) can be controlled according to the transmitted rotation angle of the throttle grip G.

[0038] On the other hand, when the interlocking member 1 rotates in the same direction as the throttle grip G rotates reversely β, the magnet M rotates in the same direction and by the same angle together with the interlocking member 1. As a result, the magnetic field of the magnetic sensor 4 changes depending on the rotation angle of the magnet M, so that the magnetic sensor 4 can obtain an output voltage corresponding to the rotation angle and detect the reverse rotation β of the throttle grip G.

[0039] In this way, in this embodiment, when the reverse rotation β of the throttle grip G is detected, a predetermined function of the motorcycle can be activated or deactivated. As an example, this embodiment is applied to a motorcycle equipped with a constant vehicle speed maintaining device (auto-cruise device) that maintains a constant traveling speed, and is configured so that when the throttle grip G is rotated in the reverse direction β (a rotation operation in the opposite direction to the forward rotation α that fully opens the throttle from the initial position), the constant vehicle speed maintaining control can be stopped (canceled).

[0040] Here, the throttle grip device of this embodiment is equipped with a first biasing means R1 that biases the throttle grip G toward its initial position when the throttle grip G rotates forward α, and a second biasing means R2 that biases the throttle grip G toward its initial position when the throttle grip G rotates reversely, and these first biasing means R1 and second biasing means R2 are arranged side by side in the axial direction of the interlocking member 1 (the extension direction of the handle pipe H).

[0041] The first biasing means R1 according to this embodiment is configured to include a first elastic member S1 that generates an elastic force when compressed in the axial direction of the interlocking member 1, and a first compression member D1 that converts the rotational force of the interlocking member 1 into an axial force and compresses the first elastic member S1 in the axial direction to obtain a biasing force. The first elastic member S1 is made of a compression spring that is inserted into and attached to the shaft portion of the interlocking member 1, and generates an elastic force when the interlocking member 1 is compressed in the axial direction by the first compression member D1.

[0042] The first compression member D1 has an elongated hole e1 through which a fixing pin p1 is inserted, and a cam surface d1 inclined at a predetermined angle with respect to the axial direction of the interlocking member 1. The first compression member D1 is connected to the interlocking member 1 in the rotational direction by inserting the fixing pin p1, which is inserted into an insertion hole 1c of the interlocking member 1, into the elongated hole e1, and the cam surface d1 is disposed opposite a cam surface 3a formed on the accommodating member 3.

[0043] As a result, as shown in Figure 9(b), when the throttle grip G rotates forward α from the initial position (see Figure 9(a)) and the interlocking member 1 rotates, the first compression member D1 moves in the axial direction of the interlocking member 1 (direction a in the figure) due to the cam action of cam surface d1 facing cam surface 3a, compressing the first elastic member S1 in that axial direction. Note that the compressive force applied to the first elastic member S1 is received by a receiving member formed by E-ring n3 via washer n2, causing the first elastic member S1 to contract and generate a repulsive force (elastic force).

[0044] The second biasing means R2 according to this embodiment is configured to include a second elastic member S2 that generates an elastic force when compressed in the axial direction of the interlocking member 1, and a second compression member D2 that converts the rotational force of the interlocking member 1 into an axial force and compresses the second elastic member S2 in the axial direction to obtain an urging force. The second elastic member S2 is made of a compression spring that is inserted into and attached to the shaft portion of the interlocking member 1, and generates an elastic force when compressed in the axial direction of the interlocking member 1 by the second compression member D2.

[0045] The second compression member D2 has an elongated hole e2 through which the fixed pin p2 is inserted, and a cam surface d2 that is inclined at a predetermined angle relative to the axial direction of the interlocking member 1. The second compression member D2 is connected to the interlocking member 1 in the rotational direction by inserting the fixed pin p2, which is inserted into the insertion hole 1c of the interlocking member 1, into the elongated hole e2, and the cam surface d2 is disposed opposite a cam surface 2a formed on the tip fixing member 2.

[0046] As a result, as shown in Figure 9(c), when the throttle grip G rotates reversely β from the initial position (see Figure 9(a)) and the interlocking member 1 rotates, the second compression member D2 moves in the axial direction of the interlocking member 1 (direction b in the figure) due to the cam action of cam surface d2 facing cam surface 2a, compressing the second elastic member S2 in that axial direction. Note that the compressive force applied to the second elastic member S2 is received by a receiving member formed by E-ring n3 via washer n1, causing the second elastic member S2 to contract and generate a repulsive force (elastic force).

[0047] When the throttle grip G rotates forward α and reverse β, the fixing pin p3 moves along the groove 2c of the tip fixing member 2 and spins freely, thereby maintaining the fixation of the tip fixing member 2. Furthermore, the fixing members 7 and 8 are used to fix the tip fixing member 2 and the housing member 3 to predetermined positions inside the handle pipe H, and are each formed with claws 7a and 8a that can be engaged with the handle pipe H.

[0048] However, in this embodiment, the elastic force (biasing force) of the second elastic member S2 is set to be greater than that of the first elastic member S1 to suppress unintended reverse rotation β of the throttle grip G, but the elastic forces (biasing forces) of the first elastic member S1 and the second elastic member S2 may be set to be the same, or the elastic force (biasing force) of the second elastic member S2 may be set to be smaller than that of the first elastic member S1.

[0049] Next, a throttle grip device according to a second embodiment of the present invention will be described. The throttle grip device of this embodiment, like the first embodiment, is intended to detect the rotation angle of a throttle grip G attached to a handle pipe H (handlebar) of a motorcycle and transmit the detection signal to an electronic control device mounted on the motorcycle, and as shown in Figures 1, 2 and 10 to 12, is configured to include a throttle grip G, an interlocking member 10, a housing member 3, a magnetic sensor 4 (rotation angle detection means), a locking member 6, a cover member 9, a first biasing means R1, a second biasing means R2, and a balancer B.

[0050] Note that the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. Also, since this embodiment has the same external appearance as the first embodiment, Figures 1 and 2 showing the external appearance will be used in this embodiment.

[0051] The cover member 9 is attached to cover the interlocking member 10, the first biasing means R1, and the second biasing means R2, and has a plurality of elongated holes 9a formed therein. The elongated holes 9a are adapted to receive a pair of protrusions e3 formed integrally with the first compression member D3 and a pair of protrusions e4 formed integrally with the second compression member D4, respectively, and are configured to permit movement of the first compression member D3 and the second compression member D4 in the axial direction of the interlocking member 10 while restricting rotation relative to the interlocking member 10.

[0052] Here, the interlocking member 10 according to this embodiment is made up of a shaft-like member (long member) that extends inside the handle pipe H and can rotate in conjunction with the forward rotation α and reverse rotation β of the throttle grip G, and has a screw shape 10a that extends helically in the axial direction on its outer circumferential surface, as shown in Fig. 12. First and second biasing means R1 and R2 are attached to the shaft of the interlocking member 10, and the shaft is connected to the locking member 6 by a fixing pin L.

[0053] The locking member 6 has a notched shape that can be circumferentially locked to a locked portion G2a (see Figure 4) formed at the tip of the base member G2 of the throttle grip G, so that the tip fixing member 2 can rotate in conjunction with the rotation of the throttle grip G. Then, by inserting a fixing pin L into the locking member 6 and then inserting the fixing pin L into the groove portion 2c of the tip fixing member 2 and the interlocking member 10, the interlocking member 10 and the locking member 6 are connected.

[0054] As a result, when the throttle grip G is rotated, the interlocking member 10 can rotate about its axis via the locking member 6. When the throttle grip G is rotated, the fixing pin L passes through the groove portion 2c and spins freely, so the fixation of the tip fixing member 2 is maintained.

[0055] The first biasing means R1 according to this embodiment is configured to include a first elastic member S1 that generates an elastic force when compressed in the axial direction of the interlocking member 10, and a first compression member D3 that converts the rotational force of the interlocking member 10 into an axial force and compresses the first elastic member S1 in the axial direction to obtain a biasing force. The first elastic member S1 is made of a compression spring that is inserted through and attached to the shaft portion of the interlocking member 10, and generates an elastic force when compressed in the axial direction of the interlocking member 10 by the first compression member D3.

[0056] The second biasing means R2 according to this embodiment is configured to include a second elastic member S2 that generates an elastic force when compressed in the axial direction of the interlocking member 10, and a second compression member D4 that converts the rotational force of the interlocking member 10 into the axial direction and compresses the second elastic member S2 in the axial direction to obtain an urging force. The second elastic member S2 is made of a compression spring that is inserted through and attached to the shaft portion of the interlocking member 10, and generates an elastic force when compressed in the axial direction of the interlocking member 10 by the second compression member D4.

[0057] In particular, the first compression member D3 and the second compression member D4 according to this embodiment are configured to fit into a thread 10a that extends helically in the axial direction on the outer peripheral surface of the interlocking member 10, and to move along the thread 10a to compress the first elastic member S1 or the second elastic member S2 when the throttle grip G rotates forward α or reverse β. That is, the first compression member D3 and the second compression member D4 are formed with female threads that fit into the thread 10a of the interlocking member 10, and are assembled by fitting the female threads into the thread 10a (male threads). Therefore, when the interlocking member 10 rotates, the first compression member D3 or the second compression member D4 moves due to the action of the ball screw.

[0058] As a result, as shown in Figure 13(b), when the throttle grip G rotates forward α from the initial position (see Figure 13(a)) and the interlocking member 10 rotates, the first compression member D3 moves along the thread shape 10a in the axial direction of the interlocking member 10 (direction a in the figure), compressing the first elastic member S1 in that axial direction. Similarly, as shown in Figure 13(c), when the throttle grip G rotates backward β from the initial position (see Figure 13(a)) and the interlocking member 10 rotates, the second compression member D4 moves along the thread shape 10a in the axial direction of the interlocking member 10 (direction b in the figure), compressing the second elastic member S2 in that axial direction.

[0059] Next, a throttle grip device according to a third embodiment of the present invention will be described. The throttle grip device of this embodiment, like the first embodiment, is intended to detect the rotation angle of a throttle grip G attached to a handle pipe H (handlebar) of a motorcycle and transmit the detection signal to an electronic control device mounted on the motorcycle, and as shown in Figures 1, 2 and 14 to 16, is configured to include a throttle grip G, an interlocking member 12, a housing member 3, a magnetic sensor 4 (rotation angle detection means), a locking member 6, a cover member 11, a first biasing means R1, a second biasing means R2, and a balancer B.

[0060] Note that the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. Also, since this embodiment has the same external appearance as the first embodiment, Figures 1 and 2 showing the external appearance will be used in this embodiment.

[0061] The interlocking member 12 is an axial member (long member) that extends inside the handle pipe H and can rotate in conjunction with the forward rotation α and reverse rotation β of the throttle grip G, and as shown in Figure 15, a first compression member D5 and a second compression member D6 are fitted into the interlocking member 12 so that the interlocking member 12 can slide in the axial direction. The interlocking member 12 is connected to the locking member 6 by a fixing pin N, and when the throttle grip G is rotated, the interlocking member 12 can rotate about its axis via the locking member 6.

[0062] The cover member 11 according to this embodiment is attached to cover the interlocking member 12, the first biasing means R1, and the second biasing means R2, and has a threaded shape 11a formed on its inner circumferential surface that extends helically in the axial direction, as shown in Fig. 16. This threaded shape 11a is adapted to fit into a helical groove e5 formed in the first compression member D5 and a helical groove e6 (see Fig. 15) formed in the second compression member D6, respectively.

[0063] The first biasing means R1 according to this embodiment is configured to include a first elastic member S1 that generates an elastic force when compressed in the axial direction of the interlocking member 12, and a first compression member D5 that converts the rotational force of the interlocking member 12 into an axial force and compresses the first elastic member S1 in the axial direction to obtain a biasing force. The first elastic member S1 is made of a compression spring that is inserted through and attached to the shaft portion of the interlocking member 12, and generates an elastic force when compressed in the axial direction of the interlocking member 12 by the first compression member D5.

[0064] The second biasing means R2 according to this embodiment is configured to include a second elastic member S2 that generates an elastic force when compressed in the axial direction of the interlocking member 12, and a second compression member D6 that converts the rotational force of the interlocking member 12 into an axial force and compresses the second elastic member S2 in the axial direction to obtain a biasing force. The second elastic member S2 is made of a compression spring that is inserted through and attached to the shaft portion of the interlocking member 12, and generates an elastic force when compressed in the axial direction of the interlocking member 12 by the second compression member D6.

[0065] In particular, the first compression member D5 and the second compression member D6 according to this embodiment are configured to fit into a threaded groove 11a that extends helically in the axial direction on the inner peripheral surface of the cover member 11, and to move along the threaded groove 11a to compress the first elastic member S1 or the second elastic member S2 when the throttle grip G rotates forward α or reverse β. That is, the first compression member D5 and the second compression member D6 are formed with helical grooves e5 and e6 that fit into the threaded groove 11a of the cover member 11, and are assembled by fitting the helical grooves e5 and e6 into the threaded groove 11a (male thread). Therefore, when the interlocking member 12 rotates, the first compression member D5 or the second compression member D6 moves due to the action of the ball screw.

[0066] As a result, as shown in Figure 17(b), when the throttle grip G rotates forward α from the initial position (see Figure 17(a)) and the interlocking member 12 rotates, the first compression member D5 moves along the thread shape 11a in the axial direction of the interlocking member 12 (direction a in the figure), compressing the first elastic member S1 in that axial direction. Similarly, as shown in Figure 17(c), when the throttle grip G rotates backward β from the initial position (see Figure 17(a)) and the interlocking member 12 rotates, the second compression member D6 moves along the thread shape 11a in the axial direction of the interlocking member 12 (direction b in the figure), compressing the second elastic member S2 in that axial direction.

[0067] According to the throttle grip device of this embodiment, the first biasing means R1 includes a first elastic member S1 that generates an elastic force when compressed in the axial direction of the interlocking member (1, 10, 12), and a first compression member (D1, D3, D5) that converts the rotational force of the interlocking member (1, 10, 12) into the axial direction and compresses the first elastic member S1 in the axial direction to obtain a biasing force. The second biasing means R2 includes a second elastic member S2 that generates an elastic force when compressed in the axial direction of the interlocking member (1, 10, 12), and a second compression member (D2, D4, D6) that converts the rotational force of the interlocking member (1, 10, 12) into the axial direction and compresses the second elastic member S2 in the axial direction to obtain a biasing force. This allows the throttle grip device of this embodiment to reliably apply a biasing force toward the initial position when the throttle grip G is rotated, while also suppressing radial deflection of the biasing means (the first biasing means R1 and the second biasing means R2), thereby maintaining operability.

[0068] Furthermore, since the first biasing means R1 and the second biasing means R2 according to this embodiment are arranged side by side in the axial direction of the interlocking member (1, 10, 12), the first biasing means R1 and the second biasing means R2 can be easily arranged even in a handle pipe H having a relatively small inner diameter. In particular, since the first elastic member S1 and the second elastic member S2 according to this embodiment are made up of compression coil springs attached to the interlocking members (1, 10, 12), respectively, they can be reliably compressed in accordance with the compressive forces of the first compression members (D1, D3, D5) and the second compression members (D2, D4, D6), and the required elastic force can be generated.

[0069] Furthermore, the throttle grip device of this embodiment is provided with a tip fixing member 2 to which a balancer B having a predetermined weight can be attached at the tip side of the throttle grip G, so that the vibration transmitted from the drive source of the two-wheeled vehicle to the throttle grip G can be adjusted by the weight of the balancer B, thereby improving operability.

[0070] However, in the throttle grip device according to this embodiment, the first biasing means R1 is disposed on the base end side (left side in FIG. 3) of the throttle grip G, and the second biasing means R2 is disposed on the tip end side (right side in FIG. 3) of the throttle grip G, so that the first biasing means R1 and the second biasing means R2 can be disposed efficiently within a limited space. Note that the first biasing means R1 may be disposed on the tip end side of the throttle grip G, and the second biasing means R2 may be disposed on the base end side of the throttle grip G.

[0071] Furthermore, according to the throttle grip device of this embodiment, the first biasing means R1 and the second biasing means R2 are configured such that the first elastic member S1 and the second elastic member S2 are attached adjacent to each other in the axial direction of the interlocking member (1, 10, 12), and the first compression members (D1, D3, D5) and the second compression members (D2, D4, D6) are attached to both sides thereof, respectively.Therefore, the compression direction of the first compression members (D1, D3, D5) and the compression direction of the second compression members (D2, D4, D6) can be opposed to each other, and receiving members that receive the compression force (in this embodiment, washers n1, n2 and E-ring n3), etc., can be shared.

[0072] According to the throttle grip device of the first embodiment, the first compression member D1 and the second compression member D2 have cam surfaces (d1, d2) inclined at a predetermined angle relative to the axial direction of the interlocking member 1, and when the throttle grip G rotates forward α or reverse β, the cam action of the cam surfaces (d1, d2) causes them to move in the axial direction of the interlocking member 1, compressing the first elastic member S1 or the second elastic member S2, thereby ensuring a biasing force toward the initial position.

[0073] According to the throttle grip device of the second embodiment, the first compression member D3 and the second compression member D4 are fitted into a screw shape 10a that extends spirally in the axial direction on the outer surface of the interlocking member 10, and when the throttle grip G rotates forward or backward, they move along the screw shape 10a to compress the first elastic member S1 or the second elastic member S2, thereby ensuring a spring force toward the initial position.

[0074] According to the throttle grip device of the third embodiment, the first compression member D5 and the second compression member D6 are fitted into a screw shape 11a that extends spirally in the axial direction on the inner surface of the cover member 11, and when the throttle grip G rotates forward or backward, they move along the screw shape 11a to compress the first elastic member S1 or the second elastic member S2, thereby ensuring a biasing force toward the initial position.

[0075] Although the present embodiment has been described above, the present invention is not limited to this. For example, the first elastic member S1 and the second elastic member S2 are not limited to compression coil springs, and may be other types of elastic members (e.g., rubber or resin) that generate elastic force when compressed in the axial direction of the interlocking member. Also, instead of the magnetic sensor 4, other sensors (e.g., sensors that do not use magnetism) that can detect the rotation angle of the throttle grip G may be used.

[0076] Furthermore, in this embodiment, the constant vehicle speed maintenance control of the constant vehicle speed maintenance device (auto-cruise device) is stopped (cancelled) when the throttle grip G is rotated in the reverse direction. However, it is sufficient if a predetermined function of the vehicle is activated or deactivated when the reverse rotation of the throttle grip G is detected. For example, the reverse rotation of the throttle grip G may be used to start authentication in an immobilizer system or a smart entry system, activate a starter to start the engine, or activate emergency lighting means such as hazard lights. Note that the vehicle to which this invention is applied is not limited to a motorcycle as in this embodiment, but may also be applied to other vehicles (such as ATVs and snowmobiles) having a handle pipe H. [Industrial Applicability]

[0077] The present invention can also be applied to devices with different external shapes or devices with additional functions. [Explanation of symbols]

[0078] 1 Interlocking members 1a central groove 1b Proximal end 1c Insertion hole 1d Insertion hole 1e Insertion hole 2 Tip fixing member 2a Cam surface 2b screw hole 2c Groove 3. Storage material 3a Cam surface 3b Recessed portion 4. Magnetic sensor (rotation angle detection means) 5. Substrate 6 Locking member 6a Locking part 6b Insertion hole 7 Fixing member 7a Claw part 8 Fixing member 8a Claw part 9 Cover member 9a long hole 10 Interlocking members 10a screw shape 11 Cover member 11a screw shape 12 Interlocking members R1 First biasing means R2 Second biasing means H handle pipe G. Throttle grip G1 gripping member G2 base material G2a Locked part M magnet B Balancer f Mounting screws h wiring p1~p3 Fixing pins S1 First elastic member S2 Second elastic member D1, D3, D5 First compression member D2, D4, D6 Second compression member d1, d2 cam surface n1, n2 Washer (receiving part) n3 E-ring (receiving part) e1, e2 long hole e3, e4 convex parts e5, e6 spiral groove

Claims

1. a throttle grip attached to a tip end of a handle pipe of a vehicle, capable of being rotated by a driver, and capable of being rotated in a forward direction from an initial position and in a reverse direction opposite to the predetermined direction; an interlocking member that extends within the handle pipe and that can rotate in conjunction with forward and reverse rotation of the throttle grip; a first biasing means for biasing the throttle grip toward an initial position when the throttle grip rotates forward; a second biasing means for biasing the throttle grip toward its initial position when the throttle grip rotates in the reverse direction; a rotation angle detection means for detecting a rotation angle of the interlocking member to thereby detect a rotation angle of the throttle grip; a throttle grip device that can control a drive source of a vehicle in accordance with a rotation angle of the throttle grip during forward rotation detected by the rotation angle detection means, and can activate or deactivate a predetermined function of the vehicle when the throttle grip is rotated in a reverse direction, a throttle grip device characterized in that the first biasing means comprises a first elastic member that generates an elastic force when compressed in the axial direction of the interlocking member, and a first compression member that converts the rotational force of the interlocking member into the axial direction and compresses the first elastic member in the axial direction to obtain an urging force, and the second biasing means comprises a second elastic member that generates an elastic force when compressed in the axial direction of the interlocking member, and a second compression member that converts the rotational force of the interlocking member into the axial direction and compresses the second elastic member in the axial direction to obtain an urging force.

2. 2. The throttle grip device according to claim 1, wherein the first and second biasing means are arranged side by side in the axial direction of the interlocking member.

3. 2. The throttle grip device according to claim 1, wherein the first elastic member and the second elastic member are compression coil springs attached to the interlocking member, respectively.

4. The throttle grip device according to claim 1, characterized in that the first compression member and the second compression member have cam surfaces inclined at a predetermined angle with respect to the axial direction of the interlocking member, and when the throttle grip rotates forward or reverse, the first compression member and the second compression member move in the axial direction of the interlocking member due to the cam action of the cam surfaces, compressing the first elastic member or the second elastic member.

5. The throttle grip device according to claim 1, characterized in that the first compression member and the second compression member are fitted into a screw shape that extends spirally in the axial direction on the outer peripheral surface of the interlocking member, and when the throttle grip rotates forward or backward, they move along the screw shape to compress the first elastic member or the second elastic member.

6. 2. The throttle grip device according to claim 1, further comprising a cover member attached to cover the interlocking member, wherein the first compression member and the second compression member are fitted into a screw shape that extends spirally in the axial direction on the inner surface of the cover member, and when the throttle grip is rotated forward or backward, they move along the screw shape to compress the first elastic member or the second elastic member.

7. 2. The throttle grip device according to claim 1, further comprising a tip fixing member on the tip side of said throttle grip to which a balancer having a predetermined weight can be attached.

8. 2. The throttle grip device according to claim 1, wherein the first biasing means is disposed on the base end side of the throttle grip, and the second biasing means is disposed on the tip end side of the throttle grip.

9. 2. The throttle grip device according to claim 1, wherein the first biasing means is disposed on the tip end side of the throttle grip, and the second biasing means is disposed on the base end side of the throttle grip.

10. 2. The throttle grip device according to claim 1, wherein the first and second biasing means are configured such that the first elastic member and the second elastic member are attached adjacent to each other in the axial direction of the interlocking member, and the first and second compression members are attached to both sides thereof, respectively.

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