JP6743863B2 - Sensor support structure - Google Patents

Description

The present invention relates to a support structure of a sensor for detecting the behavior of the vehicle.

Generally, a motorcycle is equipped with an ABS (Antilock Brake System) unit to prevent the wheels from being locked during sudden braking. The ABS unit receives a detection signal or the like from a sensor that detects a wheel speed or a sensor that detects acceleration and the like, and the brake pressures for the front and rear wheels are controlled based on the detection signal (see, for example, Patent Document 1). .. Not only the sensors used for such ABS control but also the sensors used for grasping the behavior of the vehicle have severe vibration conditions, so that high-frequency vibrations such as engine vibration are difficult to be transmitted in the vehicle. Is attached to.

JP, 2009-292350, A

However, since the above-mentioned sensor is attached to a portion where high-frequency vibration is difficult to be transmitted, the layout layout is limited to satisfy the vibration condition of the sensor. Therefore, when the vehicle falls or collides, the sensor may be attached to a place that receives an impact from the outside. Further, if the sensor is mounted on the vehicle via a member such as a bracket, the mounting work becomes complicated and the maintainability deteriorates, and the number of parts increases by the amount of the bracket, resulting in a large installation space.

The present invention has been made in view of the above point, and provides a sensor support structure capable of reducing the influence of an external impact and improving the maintainability while saving the installation space of the bracket. The purpose is to

A sensor support structure of the present invention includes a vehicle body frame of a saddle-ride type vehicle that supports an engine, a bracket to which vibration is propagated from the vehicle body frame, and an inertial sensor attached to the bracket. The bracket is attached to the bracket together with another component that makes the bracket less likely to vibrate by increasing the weight supported by the bracket, and the bracket covers at least the side surface of the other component and the inertial sensor is attached. 1 mounting surface and a second mounting surface on which the other component is mounted, and the first mounting surface on which the inertial sensor is provided and the other component have a gap, and The mounting position of the inertial sensor on the mounting surface of No. 1 is located above the second mounting surface, and the body frame is located above the rear wheels to support a pair of left and right seat rails. A plurality of frame members, wherein the inertial sensor is arranged between the pair of left and right seat rails in a top view of the vehicle body, and is further arranged in a space surrounded by the pair of left and right seat rails. To do.

According to this configuration, the weight of the entire body supported by the bracket is increased and the bracket is less likely to vibrate because the inertia sensor and other components are attached to the bracket. This makes it difficult for the vibration from the body frame to be transmitted to the sensor, so that the vibration condition of the inertial sensor can be satisfied. In addition, since the inertia sensor and the component also serve as the brackets, the individual brackets are not required, the maintainability is improved, and the space can be saved. Further, Ru can achieve weight and cost reduction by reducing the number of parts. Further, the pair of left and right seat rails can protect the inertial sensor from an external impact or the like.

In the support structure for a sensor of the present invention, the first mounting surface may be bent with respect to the second mounting surface .

According to the support structure of the sensor of the present invention, to protect the inertial sensors and other components from external shock received by the straddle-type vehicle with effectively preventing vibrations relative inertial sensors and other components it can.

FIG. 3 is a perspective view of the vehicle body frame according to the present embodiment. It is a system image diagram of the ABS according to the present embodiment. It is a perspective view from the front side of the attachment structure of the inertial sensor according to the present embodiment. It is a perspective view from the back side of the attachment structure of the inertial sensor which concerns on this Embodiment. FIG. 4 is a left side view of the location of the inertial sensor according to the present embodiment. It is a rear view of the location where the inertial sensor according to the present embodiment is arranged. It is a top view of the installation location of the inertial sensor which concerns on this Embodiment.

Hereinafter, the present embodiment will be described in detail with reference to the accompanying drawings. In the following, the sensor support structure according to the present invention will be described as an example applied to a motorcycle, but is not limited to a saddle-ride type vehicle such as a motorcycle, such as a three-wheeled vehicle or a four-wheeled vehicle. It can also be applied to other saddle type vehicles. FIG. 1 is a perspective view of a vehicle body frame according to the present embodiment. FIG. 2 is a system image diagram of the ABS according to the present embodiment.

As shown in FIG. 1, a vehicle body frame 1 is configured by attaching a seat rail 20 to a main frame 10 made of steel or aluminum alloy on which various parts such as an electric system are mounted. In the main frame 10, a pair of tank rails 12 branch left and right from a head frame 11 located at the front end and extend rearward, and a pair of body frames 13 extend downward from the rear end of each tank rail 12. doing. A housing space for an engine (not shown) or the like is formed by the head frame 11, the tank rail 12, and the body frame 13, and the body frame 1 is reinforced by suspending the engine in these spaces.

The pair of body frames 13 are connected by an upper bridge 14 on the upper side and are connected by a lower bridge 15 on the lower side. A swing arm pivot 16 is formed on each of the pair of body frames 13, and a swing arm 17 supporting a rear wheel (not shown) is connected to the swing arm pivot 16 so as to be vertically swingable. An upper portion of a rear cushion unit 19 for rear wheel suspension (see FIG. 5) is connected to the upper bridge 14, and a lower portion of the rear cushion unit 19 is connected to the lower bridge 15 and the swing arm 17 via a link mechanism. ..

A seat rail 20 extending rearward and upward is connected to the upper side of the pair of body frames 13. The seat rail 20 includes a pair of left and right upper seat rails 21 that support a seat 29 (see FIG. 5) behind the main frame 10 and a pair of left and right lower seat rails 22 that support the upper seat rail 21 from below. Contains. The space surrounded by the upper seat rail 21 and the lower seat rail 22 is a storage space for the ABS unit 30. The pair of left and right lower seat rails 22 are connected by a rail bridge 23. The ABS unit 30 is attached to the surface (upper surface) of a bracket 60 that is a plate-shaped member that is laid between the rail bridge 23 and the left upper seat rail 21.

As shown in FIG. 2, the ABS unit 30 detects the wheel speed by the wheel speed sensors 42 and 52 attached to the front wheels 41 and the rear wheels 51 and automatically controls the brake to prevent the wheels from being locked. ing. The ABS unit 30 has a control unit 31 and a hydraulic unit (HU: Hydraulic Unit) 32 integrated therein. The hydraulic circuit of the hydraulic unit 32 is divided into a front system and a rear system, and the front and rear wheels 41 and 51 have different systems. Each system includes inlet solenoid valves 33a and 33b, outlet solenoid valves 34a and 34b, one-way valves 35a and 35b, reservoirs 36a and 36b, and pumps 37a and 37b.

In the front system, the hydraulic pressure from the master cylinder 44 of the front brake lever 43 is applied to the front brake caliper 45 through the inlet solenoid valve 33a. When a sudden decrease in the rotation of the front wheels 41 is detected, the inlet solenoid valve 33a shuts off the hydraulic pressure from the master cylinder 44 and opens the outlet solenoid valve 34a to drain the brake fluid from the front brake caliper 45 to the reservoir 36a. Then, reduce the hydraulic pressure. The hydraulic pressure temporarily stored in the reservoir 36a is sucked by the pump 37a and returned to the master cylinder 44 side. Also in the rear system, the hydraulic pressure from the master cylinder 54 of the rear brake pedal 53 is controlled as in the front system.

The control unit 31 includes an input side interface, an output side interface, a processor, a memory and the like. The memory is configured by one or a plurality of storage media such as a ROM (Read Only Memory) and a RAM (Random Access Memory) according to the application. Various programs and various parameters for ABS control are stored in the memory. A brake light switch, wheel speed sensors 42 and 52, an inertial sensor (sensor) 80, etc. are connected to the input side interface. Solenoid valves 33a, 33b, 34a, 34b, an indicator lamp 59, a motor 39, etc. are connected to the output side interface.

The ABS unit 30 controls the solenoid valves 33a, 33b, 34a, 34b and the motor 39 based on the wheel speeds of the front and rear wheels 41, 51 detected by the wheel speed sensors 42, 52, the accelerations and angular velocities detected by the inertial sensor 80, and the like. Control. That is, when the wheel speed of the front and rear wheels 41, 51 decreases with respect to the speed of the vehicle body, the ABS unit 30 controls maintaining and reducing the brake pressure to prevent the wheels from locking. On the other hand, when the wheel speeds of the front and rear wheels 41, 51 approach the vehicle speed, the brake pressure is controlled to be increased. By repeating this control, it is possible to appropriately decelerate the front and rear wheels 41 and 51 without locking them on a slippery road surface or the like.

By the way, since the inertial sensor 80 used in the ABS unit 30 is vulnerable to impact, it is desirable to mount the inertial sensor 80 at a position such as inside the body frame 1 that is protected from external impact. However, since the inertial sensor 80 has severe vibration conditions, it is usually mounted at a position where vibration from the vehicle body frame 1 is difficult to propagate. As described above, the inertial sensor 80 is preferably arranged near the body frame 1 from the viewpoint of protection, but the vibration condition cannot be satisfied near the body frame 1. Furthermore, a bracket must be prepared for attaching the inertial sensor 80 to the vehicle body frame 1.

Therefore, in the present embodiment, the inertia sensor 80 is attached to the bracket 60 used in the ABS unit 30 to increase the weight supported by the bracket 60, thereby lowering the natural frequency and making it difficult for the bracket 60 to vibrate. doing. This makes it possible not only to take measures against vibration for the ABS unit 30 but also to satisfy the vibration condition of the inertial sensor 80 near the body frame 1. In addition, since the ABS unit 30 and the inertia sensor 80 are also used as the brackets, the work of attaching the individual brackets is not required, the maintainability is improved, and the space can be saved. Furthermore, it is possible to reduce the number of parts, reduce the weight, and reduce the cost.

Hereinafter, a support structure for the ABS unit and the inertial sensor will be described with reference to FIGS. 3 and 4. FIG. 3 is a perspective view from the front side of the inertial sensor mounting structure according to the present embodiment. FIG. 4 is a perspective view from the back side of the inertial sensor mounting structure according to the present embodiment.

As shown in FIGS. 3 and 4, frame brackets 25 and 26 that support the bracket 60 are attached to the left upper seat rail 21 and the rail bridge 23, respectively. A bracket 60 is fixed to each frame bracket 25, 26 with a plurality of bolts 64 via a plurality of rubber bushes 63. The bracket 60 is a plate-shaped member that is bent in a substantially L-shape in cross section, and has a horizontal plate portion 61 that extends in the left-right direction and a vertical plate portion 62 that extends upward from the left end of the horizontal plate portion 61. The bracket 60 is attached to the frame bracket 26 of the rail bridge 23 on the right end side of the horizontal plate portion 61, and is attached to the frame bracket 25 of the upper seat rail 21 on the upper end side of the vertical plate portion 62.

In this case, a mounting hole (not shown) for the frame bracket 26 is formed in the horizontal plate portion 61, and a mounting hole (not shown) for the frame bracket 25 is formed in the vertical plate portion 62. A tubular rubber bush 63 as a vibration absorbing material is provided in each of the mounting holes of the horizontal plate portion 61 and the vertical plate portion 62 so as to project vertically from the upper and lower surfaces of the horizontal plate portion 61 and the vertical plate portion 62, respectively. Is installed. A tubular collar 65 is mounted on the inner peripheral surface of each rubber bush 63, and a male screw of a bolt 64 is inserted inside the collar 65 and fixed to female screws of the frame brackets 25 and 26.

Since the rubber bush 63 protrudes downward also from the lower surfaces of the horizontal plate portion 61 and the vertical plate portion 62, a gap is formed between the bracket 60 and the frame brackets 25 and 26 (see FIG. 6). Further, since the rubber bush 63 protrudes upward from the upper surfaces of the horizontal plate portion 61 and the vertical plate portion 62, the head of the bolt 64 may directly contact the horizontal plate portion 61 and the vertical plate portion 62. Absent. In this way, the bracket 60 is supported by the horizontal plate portion 61 and the vertical plate portion 62 so as to be supported by the left upper seat rail 21 and the rail bridge 23 in a two-sided manner. The rubber bush 63 absorbs the vibration transmitted from the upper seat rail 21 and the lower seat rail 22 to the bracket 60.

An upper surface 71 (see FIG. 6) of the horizontal plate portion 61 of the bracket 60 is a second mounting surface on which the ABS unit 30 is mounted, and a plurality of bolts inserted from the lower surface side to the upper surface 71 of the horizontal plate portion 61. The ABS unit 30 is attached at 72 (see FIG. 6). The outer side surface 73 of the vertical plate portion 62 of the bracket 60 serves as a first mounting surface on which the inertial sensor 80 is mounted. A sensor 80 is attached. The mounting plate 74 is a rectangular plate-shaped member fixed to the outer side surface 73 at the central portion, and supports the inertial sensor 80 at both ends by both end portions bent so as to be separated from the outer side surface 73.

The inertial sensor 80 is used for ABS control, and a pair of arm portions 82 extend from the sensor body 81 and are attached to both end portions of the mounting plate 74 by the pair of arm portions 82. The inertial sensor 80 is fixed to the bracket 60 by using the mounting plate 74 so that the entire inertial sensor 80 is floated from the outer side surface 73 of the bracket 60. Thus, the rubber bush 63 is interposed between the frame brackets 25 and 26 and the bracket 60, and the mounting plate 74 is interposed between the bracket 60 and the inertia sensor 80. Therefore, the inertial sensor 80 is doubly supported by the rubber bush 63 and the mounting plate 74 in a double manner with respect to the seat rail 20.

In this way, the inertia sensor 80 is attached to the bracket 60 in addition to the ABS unit 30. Since both the ABS unit 30 and the inertial sensor 80 are fixed to the seat rail 20 with the rubber bush 63 interposed, the rubber bush 63 can absorb the vibration from the seat rail 20. In addition, since the ABS unit 30 and the inertial sensor 80 are attached to the bracket 60 to increase the weight, the bracket 60 is less likely to vibrate, and vibration transmitted from the seat rail 20 to the ABS unit 30 and the inertial sensor 80 is effective. Can be suppressed. Therefore, the inertial sensor 80 can be supported by the seat rail 20 in which vibration is easily transmitted.

Next, the locations of the ABS unit and the inertial sensor will be described in detail. FIG. 5 is a left side view of the location of the inertial sensor according to the present embodiment. FIG. 6 is a rear view of the location of the inertial sensor according to the present embodiment. FIG. 7 is a top view of the installation location of the inertial sensor according to the present embodiment. In FIG. 7, the frame bracket is omitted for convenience of description.

As shown in FIG. 5, the ABS unit 30 attached to the bracket 60 and the inertia sensor 80 are arranged in a space surrounded by a pair of left and right upper seat rails 21 and a pair of left and right lower seat rails 22. Therefore, the ABS unit 30 and the inertial sensor 80 are protected from an external impact by the pair of left and right upper seat rails 21 and the pair of left and right lower seat rails 22. In this case, the ABS unit 30 and the inertial sensor 80 are arranged so as to fit between the upper seat rail 21 and the lower seat rail 22 in a side view. Therefore, the ABS unit 30 and the inertial sensor 80 do not fall into the side cowl (not shown) and the appearance is not deteriorated.

The bracket 60 is provided adjacent to the mounting position of the rear cushion unit 19 with respect to the body frame 13. That is, the bracket 60 is mounted near the front end portions of the upper seat rail 21 and the lower seat rail 22 connected to the body frame 13. Since the mounting position of the rear cushion unit 19 with respect to the body frame 13 has high strength and high rigidity, the front end sides of the upper seat rail 21 and the lower seat rail 22 are reinforced by the body frame 13. Therefore, by providing the bracket 60 adjacent to the mounting position of the rear cushion unit 19, the protection performance of the ABS unit 30 and the inertial sensor 80 is improved.

Further, the ABS unit 30 and the inertial sensor 80 are attached to the bracket 60, which is a heavy load. The bracket 60, which is a heavy object, is provided next to the rear cushion unit 19, that is, on the front end side of the upper seat rail 21 and the lower seat rail 22. The front end sides of the upper seat rail 21 and the lower seat rail 22 are reinforced by the body frame 13 as described above. Therefore, the influence of the bending moment on the upper seat rail 21 and the lower seat rail 22 is reduced as compared with the configuration in which the bracket 60, which is a heavy object, is provided at a position distant from the rear cushion unit 19.

Further, the bracket 60 is located directly below the seat 29. With this configuration, since the bracket 60, which is a heavy object, is centralized in the center of the vehicle body, the moment of inertia when the vehicle body turns can be reduced and the operability can be improved. As described above, by mounting the bracket 60 on the upper seat rail 21 and the lower seat rail 22, it is possible to secure a mounting space for other components below the ABS unit 30 and improve layout. .. Further, since the ABS unit 30 and the inertial sensor 80 are unitized by the bracket 60, workability can be improved as compared with the case where they are individually attached.

As shown in FIG. 6, the ABS unit 30 is fixed so as to be in contact with the upper surface 71 of the horizontal plate portion 61 of the bracket 60, and the inertial sensor 80 is attached to the outer surface 73 of the vertical plate portion 62 of the bracket 60 via the mounting plate 74. It is fixed so as to be separated. As described above, since the rubber bush 63 is interposed between the bracket 60 and the frame brackets 25 and 26, the vibration propagated from the upper seat rail 21 and the lower seat rail 22 is absorbed by the ABS unit 30 and the inertial sensor. It is difficult to be transmitted to 80. Since the inertial sensor 80 is separated from the bracket 60 via the mounting plate 74, it is more difficult for vibration to be transmitted.

Since the ABS unit 30 itself also vibrates during driving, by separating the inertia sensor 80 from the outer side surface 73 of the bracket 60, the vibration propagating from the ABS unit 30 to the inertia sensor 80 can be suppressed. By suppressing the vibrations of the ABS unit 30 and the inertial sensor 80, it is possible to arrange the ABS unit 30 and the inertial sensor 80 at positions where the vibration conditions are severe, such as inside the upper seat rail 21 and the lower seat rail 22. It has become.

Further, the bracket 60 is bent so that the vertical plate portion 62 to which the inertial sensor 80 is attached is orthogonal to the horizontal plate portion 61 to which the ABS unit 30 is attached. Therefore, the inertial sensor 80 is arranged on the side of the ABS unit 30. Since the ABS unit 30 and the inertial sensor 80 are arranged side by side in the left-right direction, the worker should work in the same posture when connecting the harnesses branched from the main harness to the ABS unit 30 and the inertial sensor 80, respectively. You can Therefore, the workability of connecting the harness can be improved. Further, since the ABS unit 30 and the inertial sensor 80 overlap in the height direction to save space, the ABS unit 30 and the inertial sensor 80 can be arranged between the upper seat rail 21 and the lower seat rail 22. It is possible.

As shown in FIG. 7, the inertial sensor 80 is arranged between the left seat rails 21 and 22 and the ABS unit 30. That is, the inertial sensor 80 is arranged at a position avoiding the upper side of the rear wheel 51. Therefore, the left seat rails 21 and 22 can protect the inertial sensor 80 from a side impact, and also can protect the inertial sensor 80 from foreign matter and water splashes wound up on the rear wheel 51. Further, since the ABS unit 30 is arranged on the upper surface 71 of the horizontal plate portion 61, it is possible to protect the ABS unit 30 from foreign matters and water splashes wound up on the rear wheel 51 by the horizontal plate portion 61.

As described above, according to the present embodiment, since the inertia sensor 80 and the ABS unit 30 are attached to the bracket 60, the total weight supported by the bracket 60 is increased and the bracket 60 is It becomes difficult to vibrate. Since the vibration from the body frame 1 is less likely to be transmitted to the inertial sensor 80, even if the inertial sensor 80 is arranged in the space surrounded by the upper seat rail 21 and the lower seat rail 22, the vibration condition of the inertial sensor 80 may be satisfied. it can. Therefore, the upper seat rail 21 and the lower seat rail 22 protect the inertial sensor 80 from an external impact. Further, since the inertia sensor 80 and the ABS unit 30 also serve as the brackets 60, the individual brackets are not required, which improves the maintainability and saves space. Further, it is possible to reduce the number of parts and realize weight reduction and cost reduction.

It should be noted that the present invention is not limited to the above-mentioned embodiment, and can be implemented with various modifications. In the above-described embodiment, the size and shape shown in the accompanying drawings are not limited to this, and can be appropriately changed within the range where the effect of the present invention is exerted. Other than the above, the present invention can be appropriately modified and implemented without departing from the scope of the object of the present invention.

For example, in the above-described embodiment, the inertia sensor 80 is attached to the outer side surface 73 of the vertical plate portion 62 as the first attachment surface of the bracket 60, and the upper surface 71 of the horizontal plate portion 61 as the second attachment surface of the bracket 60. Although the ABS unit 30 is attached to the above, the configuration is not limited to this. The inertial sensor 80 may be attached with the upper surface 71 of the horizontal plate portion 61 as the first attachment surface, and the ABS unit 30 may be attached with the outer surface 73 of the vertical plate portion 62 as the second attachment surface.

In addition, in the above-described embodiment, the inertia sensor 80 is mounted with the outer surface 73 on the one end side in the left-right direction of the bracket 60 as the first mounting surface, but the configuration is not limited to this. The inertial sensor 80 may be attached with the outer surface 73, which is formed by bending one end side of the bracket 60 in the front-rear direction, as the first attachment surface.

Further, in the above-described embodiment, the bracket 60 is configured by a plate-shaped member having a substantially L-shaped cross section, but the configuration is not limited to this. The bracket 60 may have a configuration having first and second attachment surfaces to which the inertial sensor 80 and the ABS unit 30 are attached. For example, the bracket 60 is formed into a flat plate and the back surface of the flat plate is attached with the inertial sensor 80. The mounting surface or the upper surface of the flat plate may be the second mounting surface on which the ABS unit 30 is mounted.

Further, although the bracket 60 is fixed to the upper seat rail 21 and the rail bridge 23 in the above-described embodiment, the configuration is not limited to this. The bracket 60 may be fixed to the plurality of frame members of the vehicle body frame 1, and may be fixed to the main frame 10 or the lower seat rail 22, for example. Therefore, the sensor is not limited to being arranged in the space surrounded by the pair of left and right upper seat rails 21 and the pair of left and right lower seat rails 22, and may be arranged in the inner space of the main frame 10.

Further, in the above-described embodiment, the bracket 60 has a configuration in which the bracket 60 is bent so that the first mounting surface is orthogonal to the second mounting surface, but the configuration is not limited to this. The first mounting surface of the bracket 60 may be inclined with respect to the second mounting surface. That is, the vertical plate portion 62 may be inclined with respect to the horizontal plate portion 61 of the bracket 60.

Further, in the above-described embodiment, the bracket 60 is provided adjacent to the mounting position of the rear cushion unit 19 with respect to the body frame 13, but the configuration is not limited to this. The bracket 60 may be provided at any position with respect to the body frame 1 as long as the strength and rigidity of the body frame 1 are sufficiently high.

Further, in the above-described embodiment, the bracket 60 is located directly below the seat 29, but the configuration is not limited to this. It may be provided at any position with respect to the body frame 1 as long as the operability during turning of the vehicle body is not significantly reduced.

Further, in the above-described embodiment, the bracket 60 is fixed to the vehicle body frame 1 via the rubber bush 63 as a vibration absorbing material, but the configuration is not limited to this. The vibration absorber may be made of a material capable of absorbing the vibration transmitted from the vehicle body frame 1 to the bracket 60, and may be made of an elastic body such as a spring or a foamed body such as a sponge.

Further, in the above-described embodiment, the inertial sensor 80 is fixed so as to be separated from the outer surface 73 of the bracket 60 via the mounting plate 74, but the present invention is not limited to this configuration. The inertial sensor 80 may be fixed to the outer side surface 73 of the bracket 60 via another rubber sheet as a vibration absorbing material. In this case, the other vibration absorbing material may be formed of an elastic material such as a spring or a foam material such as a sponge. Further, a vibration absorbing material similar to the rubber bush 63 described above may be used for attaching the arm portion 82 of the inertial sensor 80.

Further, in the above-described embodiment, the bracket 60 is configured to be supported by the upper seat rail 21 and the rail bridge 23 by both ends, but is not limited to this configuration. The bracket 60 may be cantilevered with respect to the vehicle body frame 1.

Further, in the above-described embodiment, the ABS unit 30 is illustrated as the component attached to the bracket 60, but the configuration is not limited to this. The component may be any component that can be attached to the bracket 60, and may be, for example, an ECU (Engine Control Unit), a battery, or an exhaust valve actuator.

Further, in the above-described embodiment, the inertia sensor 80 used for ABS control is described as an example of the sensor attached to the bracket 60, but the present invention is not limited to this configuration. The sensor may be a sensor used in vehicle body control such as traction control or wheelie control or engine control, and is not limited to a sensor that measures acceleration or the like, and may be a sensor used in a vehicle. That is, the sensor is a concept including not only an acceleration sensor but also a temperature sensor, a flow rate sensor, a gas sensor, a pressure sensor, and the like.

As described above, the present invention has an effect that vibration propagation to the sensor can be sufficiently suppressed, and is particularly useful for a sensor support structure of a motorcycle.

1 Body frame 10 Main frame (frame member)
19 Rear cushion unit 20 Seat rail (frame member)
21 Upper seat rail (frame member)
22 Lower seat rail (frame member)
23 Rail bridge (frame member)
29 seat 30 ABS unit ( other parts)
60 bracket 61 horizontal plate portion 62 vertical plate portion 63 rubber bush (vibration absorber)
71 Upper surface of horizontal plate (second mounting surface)
73 Outer Side of Vertical Plate (First Mounting Surface)
74 the mounting plate 80 inertia sensor

Claims (2)

A body frame of a saddle type vehicle that supports an engine,
A bracket to which vibration is transmitted from the body frame,
An inertial sensor attached to the bracket,
The inertial sensor is attached to the bracket together with other components that make the bracket less likely to vibrate by increasing the weight supported by the bracket,
The bracket has a first mounting surface on which the inertial sensor is mounted, covering at least a side surface of the other component, and a second mounting surface on which the other component is mounted,
There is a gap between the first mounting surface on which the inertial sensor is provided and the other component,
The mounting position of the inertial sensor on the first mounting surface is located above the second mounting surface ,
The vehicle body frame includes a plurality of frame members including a pair of left and right seat rails that are located above the rear wheels and support a seat,
The sensor inertial sensor is arranged between the pair of left and right seat rails in a top view of the vehicle body, and is further arranged in a space surrounded by the pair of left and right seat rails . The support structure for a sensor according to claim 1, wherein the first mounting surface is bent with respect to the second mounting surface.

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