Governor Device

Abstract

To improve the adjustment accuracy of the rotation number of a general purpose engine while keeping the general purpose engine compact.SOLUTION: A governor device for adjusting a rotation number of a general purpose engine comprises: a bearing slidably arranged on a crankshaft of the general purpose engine; a flyweight for pressing the bearing to one side of the crankshaft in an axial direction with a pressing force corresponding to a rotation number of the crankshaft; a slider connected to the bearing so as to be movable in the axial direction; an energization member connected to an end face of the slider on one side in the axial direction, and energizing the slider to the other side in the axial line direction; and air-fuel ratio adjustment means capable of adjusting an air-fuel ratio of the general purpose engine in a combustion chamber in accordance with a position of the slider in the axial direction.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a governor device for adjusting the rotation speed of a general-purpose engine. [Background technology]

[0002] Conventionally, a governor device generates a force (governor force) corresponding to the rotation speed of a general-purpose engine and transmits this governor force to an air-fuel ratio adjusting means (e.g., a throttle valve) that can adjust the air-fuel ratio in the combustion chamber of the general-purpose engine, thereby adjusting the rotation speed of the general-purpose engine. For example, Patent Document 1 discloses a governor device that transmits the governor force of a flyweight to a governor force input portion of a governor lever via a governor sleeve. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-116437 Summary of the Invention [Problem to be solved by the invention]

[0004] The governor device is provided with a biasing member that biases in a direction opposite to the governor force. However, in the technology described in Patent Document 1, the direction of the biasing force is significantly different from the direction of the governor force. This makes the movement and deformation of the governor lever and governor spring (biasing member) unstable, which may reduce the accuracy of adjusting the rotation speed of the general-purpose engine. In addition, it is desirable for the governor device to be designed so as not to increase the size of the general-purpose engine.

[0005] The present disclosure has been made in consideration of the above-mentioned problems, and aims to provide a governor device that can improve the accuracy of adjusting the rotation speed of a general-purpose engine while suppressing an increase in size of the general-purpose engine. [Means for solving the problem]

[0006] In order to achieve the above object, a governor device according to the present disclosure is a governor device for adjusting the rotation speed of a general-purpose engine, and includes: a bearing slidably arranged on a crankshaft of the general-purpose engine; a flyweight configured to press the bearing toward one axial side of the crankshaft with a pressing force corresponding to the rotation speed of the crankshaft; a slider connected to the bearing so as to be movable in the axial direction; a biasing member connected to an end face of the slider on one side in the axial direction and for biasing the slider toward the other side in the axial direction; and air-fuel ratio adjusting means configured to adjust the air-fuel ratio in a combustion chamber of the general-purpose engine according to the position of the slider in the axial direction. [Effects of the Invention]

[0007] According to the governor device of the present disclosure, it is possible to improve the accuracy of adjusting the rotation speed of a general-purpose engine while suppressing an increase in size of the general-purpose engine. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a diagram illustrating a schematic configuration of a general-purpose engine equipped with a governor device according to an embodiment. [Figure 2] FIG. 1 is a diagram illustrating a schematic configuration of a governor device according to an embodiment. [Figure 3] FIG. 2 is a diagram for explaining a layout of a flyweight according to an embodiment. [Figure 4] FIG. 1 is a diagram illustrating a schematic configuration of a governor device according to some embodiments. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, a governor device according to an embodiment of the present disclosure will be described with reference to the drawings. The embodiment shows one aspect of the present disclosure, and is not intended to limit the present disclosure. Any modification can be made within the scope of the technical concept of the present disclosure.

[0010] A governor device 1 according to the present disclosure adjusts the rotation speed of a general-purpose engine 100. The general-purpose engine 100 is not particularly limited as long as it is capable of outputting power by burning fuel, and may be, for example, a two-stroke reciprocating engine. The general-purpose engine 100 is used, for example, as a power source for a work machine that can be carried by a user, such as a brush cutter or brush cutter. FIG. 1 is a diagram schematically illustrating the configuration of a general-purpose engine 100 equipped with a governor device 1 according to one embodiment.

[0011] As illustrated in FIG. 1 , the general-purpose engine 100 includes a cylinder 102 having a combustion chamber 103 formed therein, a crankcase 104 accommodating a crankshaft 105 connected to a piston (not shown) in the combustion chamber 103, a fuel tank 106 in which fuel is stored, an air cleaner 108 that removes foreign matter from intake air A1 that is drawn in, a carburetor 110 that vaporizes and mixes fuel with the intake air A1 to be supplied to the combustion chamber 103, a tubular insulator 112 that is arranged between the cylinder 102 and the carburetor 110 for thermal insulation, a muffler 114 that reduces noise of exhaust A2 discharged from the combustion chamber 103, a recoil starter 116 that starts the general-purpose engine 100, and a governor device 1.

[0012] In one embodiment, the recoil starter 116 is configured to be able to apply a rotational force to the crankshaft 105. The recoil starter 116 includes a recoil casing 120 that houses a drive pulley 118. The drive pulley 118 is connected to the crankshaft 105. Specifically, the drive pulley 118 is connected to a tip portion 117 that includes the tip of the crankshaft 105 (see FIG. 2). The drive pulley 118 is also connected to a lever (not shown). A user of the work machine operates the lever to rotate the crankshaft 105 and start the utility engine 100. In one embodiment, the recoil starter 116 is configured so that the rotational force of the crankshaft 105 is not transmitted to the lever while the utility engine 100 is running. Specifically, the recoil starter 116 further includes a pawl 119 configured to be connected to the drive pulley 118 when the industrial engine 100 is not driving, and not to be connected to the drive pulley 118 when the industrial engine 100 is driving (see FIGS. 1 and 3). In this case, the drive pulley 118 is connected to the lever via the pawl 119.

[0013] Hereinafter, the direction in which the axis O of the crankshaft 105 extends will be referred to as the axial direction D1. The side of the axial direction D1 that is on the tip end 117 side of the crankshaft 105 (the recoil starter 116 side) will be referred to as the other side of the axial direction D1, and the side opposite the recoil starter 116 side will be referred to as one side of the axial direction D1.

[0014] (composition) The configuration of a governor device 1 according to one embodiment will be described. Fig. 2 is a diagram schematically illustrating the configuration of the governor device 1 according to one embodiment. As illustrated in Fig. 2, the governor device 1 includes a bearing 2, a flyweight 4, a slider 6, a biasing member 8, and an air-fuel ratio adjusting means 10.

[0015] The bearing 2 is slidably disposed on the crankshaft 105 of the general-purpose engine 100. In one embodiment, as illustrated in FIG. 2 , the bearing 2 has an inner ring 12 including an inner circumferential surface 13 that slides on the surface 107 of the crankshaft 105, an outer ring 14 that is disposed outside the inner ring 12 in the radial direction D2, and rolling elements 16 that are provided between the inner ring 12 and the outer ring 14. In other words, the bearing 2 is a rolling bearing. The inner ring 12 and the outer ring 14 each have a cylindrical shape. The rolling elements 16 have a spherical shape.

[0016] In the present disclosure, the center of the inner ring 12 is located on the axis O of the crankshaft 105. The direction of the radial direction D2 that approaches the axis O is defined as the inner side of the radial direction D2, and the direction that moves away from the axis O is defined as the outer side of the radial direction D2.

[0017] In one embodiment, as illustrated in Fig. 2, the bearing 2 is housed in a recoil casing 120. The inner peripheral surface 13 of the inner ring 12 is coated with lubricating oil.

[0018] The flyweight 4 is configured to press the bearing 2 to one side in the axial direction D1 with a pressing force F1 that corresponds to the rotation speed of the crankshaft 105. The pressing force F1 of the flyweight 4 increases as the rotation speed of the crankshaft 105 increases until it reaches a preset maximum value. In one embodiment, as shown in FIG. 2 , the flyweight 4 generates the pressing force F1 by utilizing centrifugal force generated when the crankshaft 105 rotates, and includes an arm portion 18, a protrusion 20, and a weight portion 22.

[0019] The arm portion 18 has a rod-like shape and is configured to be rotatable around a rotation center C formed in the base end portion 24. The arm portion 18 extends from the base end portion 24 toward the crankshaft 105. Specifically, as illustrated in FIG. 2, the base end portion 24 is formed with a hole 26 through which a pin 25 is inserted. The arm portion 18 is rotatably supported by the pin 25. A tip end portion 28 of the arm portion 18 is located inside the base end portion 24 in the radial direction D2.

[0020] The protrusion 20 protrudes from the tip 28 of the arm 18 to one side in the axial direction D1. In one embodiment, as shown in FIG. 2, the path along which the protrusion 20 passes when the arm 18 rotates is defined as a protrusion line 32. The bearing 2 is disposed on the crankshaft 105 so that the end face 30 of the inner ring 12 on the other side in the axial direction D1 is positioned on the protrusion line 32. In other words, the flyweight 4 is configured to press the inner ring 12 to one side in the axial direction D1.

[0021] The weight portion 22 is attached to the base end portion 24 of the arm portion 18. In the embodiment illustrated in FIG. 2, the base end portion 24 is bent, and the weight portion 22 is located on one side of the base end portion 24 in the axial direction D1. In one embodiment, the weight portion 22 is configured to abut against the drive pulley 118 when the convex portion 20 reaches a limit position on one side of the convex portion line 32 in the axial direction D1. This configuration prevents the arm portion 18 from rotating beyond the limit position. In other words, excessive movement of the inner ring 12 toward one side in the axial direction D1 is restricted.

[0022] In one embodiment, the governor device 1 includes a pair of flyweights 4, 4. FIG. 3 is a diagram illustrating the layout of the flyweights 4 according to this embodiment, as viewed from the other side in the axial direction D1. As illustrated in FIG. 3, a region where one flyweight 4 presses against the inner race 12 is defined as a first region R1, and a region where the other flyweight 4 presses against the inner race 12 is defined as a second region R2. The first region R1 and the second region R2 are located on opposite sides of the axis O. The first region R1 and the second region R2 are point-symmetrical with respect to the axis O. The flyweights 4 and the pawls 119 are disposed in a recoil casing 120 at a distance from each other along the circumferential direction D3 of the inner race 12. In the embodiment illustrated in FIG. 3, the recoil starter 116 further includes a drive pulley 118 in which both the flyweights 4 and the pawls 119 are housed within the recoil casing 120.

[0023] The slider 6 is connected to the bearing 2 so as to be movable in the axial direction D1. In one embodiment, as illustrated in FIG. 2, the slider 6 has a main body portion 34 located on one side of the bearing 2 in the axial direction D1, and a protrusion portion 36 protruding from the main body portion 34 on the other side in the axial direction D1. In one embodiment, the slider 6 is disposed around the outer periphery of the crankshaft 105. In some embodiments, the slider 6 has a cylindrical shape.

[0024] The main body 34 includes one side portion 38 and another side portion 40 located on the other side of the one side portion 38 in the axial direction D1. The one side portion 38 includes an end face 42 on one side of the slider 6 in the axial direction D1, and has a recess 44 recessed from the end face 42 toward the other side in the axial direction D1. The recess 44 is located outward in the radial direction D2 from the bearing 2. The other side portion 40 has a shorter length in the radial direction D2 than the one side portion 38. The one side portion 38 and the other side portion 40 have inner surfaces 39, 41 located at the same positions on the inside in the radial direction D2, and the inner surfaces 39, 41 are flush with each other.

[0025] The protruding portion 36 is integrally connected to the outer portion of the other-side portion 40 in the radial direction D2. The protruding portion 36 and the other-side portion 40 have outer surfaces 37, 43 on the outer sides in the radial direction D2 that are positioned at the same positions, and the outer surfaces 37, 43 are flush with each other. The protruding portion 36 is located more inward than the recessed portion 44 in the radial direction D2.

[0026] The outer ring 14 described above is fixed to the protrusion 36. In one embodiment, the inner diameter of the protrusion 36 and the outer diameter of the outer ring 14 are substantially the same, and the outer ring 14 is fitted into the protrusion 36. Therefore, when the flyweight 4 presses the inner ring 12 of the bearing 2 toward one side in the axial direction D1, the pressing force F1 is transmitted to the outer ring 14 via the rolling elements 16. A governor force F2 toward one side in the axial direction D1 acts on the slider 6. Hereinafter, the position in the axial direction D1 where the slider 6 is stationary when the governor force F2 is smaller than the biasing force F3 is referred to as the reference position. Note that the method of fixing the outer ring 14 to the protrusion 36 is not limited to the method illustrated in FIG. 2 . In some embodiments, the outer ring 14 is fixed to the protrusion 36 by a fastener such as a bolt or a clamp.

[0027] The biasing member 8 is connected to an end surface 42 of the slider 6 on one side in the axial direction D1. In one embodiment, the biasing member 8 is a spring, and one end 46 on one side in the axial direction D1 is connected to the fixed wall 45, and the other end 48 on the other side in the axial direction D1 is connected to a bottom surface 47 of the recessed portion 44. Therefore, a biasing force F3 toward the other side in the axial direction D1 acts on the slider 6. The fixed wall 45 is not particularly limited as long as it fixes the position of the one end 46 of the spring in the axial direction D1. The fixed wall 45 is, for example, an inner wall of the crankcase 104 that is integrally connected to the crankcase 104. In some embodiments, the recessed portion 44 extends over the entire circumferential direction of the crankshaft 105, and one biasing member 8 (spring) is fitted into the recessed portion 44.

[0028] The air-fuel ratio adjusting means 10 is configured to be able to adjust the air-fuel ratio in the combustion chamber 103 of the general-purpose engine 100 in accordance with the position of the slider 6 in the axial direction D1. In one embodiment, the air-fuel ratio adjusting means includes a valve 122, a valve shaft 124, and a wire 126, which are arranged in an intake path through which the intake air A1 flows.

[0029] The valve 122 is disposed upstream of the carburetor 110 in the intake path (opposite the combustion chamber 103). The valve shaft 124 is connected to the valve 122. The valve shaft 124 rotates to rotate the valve 122 and open or close the valve. A wire 126 connects the slider 6 and the valve shaft 124. The wire 126 rotates the valve shaft 124 by the tensile force generated by the movement of the slider 6.

[0030] 2, the wire 126 is connected to one side portion 38 of the main body portion 34. A connection point P where the wire 126 is connected to the one side portion 38 is located outside in the radial direction D2 from the recess 44. In other words, the connection point P is located outside in the radial direction D2 from the position where the biasing force F3 acts.

[0031] In one embodiment, the wire 126 is configured to rotate the valve shaft 124 in one direction when the slider 6 moves to one side in the axial direction D1 from the reference position. Furthermore, the wire 126 is configured to rotate the valve shaft 124 in the opposite direction to the one direction when the slider 6 moves to the other side in the axial direction D1. The valve shaft 124 is configured to close the valve 122 by rotating in one direction, and open the valve 122 by rotating in the opposite direction.

[0032] (Actions and Effects) The operation and effect of the governor device 1 according to one embodiment will be described. The bearing 2 is able to slide relative to the crankshaft 105 even when lubricating oil is not continuously supplied between the surface 107 of the crankshaft 105 and the inner circumferential surface 13 of the inner ring 12. In other words, the governor device 1 allows the bearing 2 to be housed in a housing other than the crankcase 104. According to one embodiment, the bearing 2 is housed in the recoil casing 120, so that the governor device 1 can be provided in the general-purpose engine 100 without increasing the size of the crankcase 104 of the general-purpose engine 100.

[0033] Furthermore, according to one embodiment, the acting direction of the governor force F2 and the acting direction of the biasing force F3 are opposite to each other in the axial direction D1, which stabilizes the movement of the slider 6. By stabilizing the movement of the slider 6, the opening of the valve 122, which is determined according to the rotation speed of the crankshaft 105, can be adjusted with high precision. In other words, the amount of intake air A1 supplied to the combustion chamber 103 is adjusted accurately. Therefore, the adjustment precision of the rotation speed of the general-purpose engine 100 can be improved.

[0034] According to one embodiment, the acting direction of the governor force F2 is not inclined relative to the acting direction of the biasing force F3. This allows a desired governor force to be applied to the slider 6, thereby suppressing variations in the amount of movement of the slider 6. Furthermore, assembly of the governor device 1 can be made easier compared to when the acting direction of the governor force F2 is inclined relative to the acting direction of the biasing force F3.

[0035] According to one embodiment, since the bearing 2 is a rolling bearing, when the flyweight 4 presses the bearing 2, the inner ring 12 slides relative to the crankshaft 105, causing the bearing 2 to move smoothly to one side in the axial direction D1. Furthermore, since the outer ring 14 is fixed to the protrusion 36, a governor force F2 is applied to the slider 6, causing the slider 6 to move to one side in the axial direction D1 together with the movement of the bearing 2. In this way, simply by arranging the bearing 2 (rolling bearing) on ​​the crankshaft 105, the governor force F2 can be easily applied to the slider 6.

[0036] According to one embodiment, the protrusion 20 is provided on the tip 28 of the arm portion 18, so that the pressing force F1 can be transmitted to the bearing 2 more efficiently than when no protrusion is provided.

[0037] In one embodiment, the opening degree of the valve 122 is adjusted according to the position of the slider 6 in the axial direction D1, but the present disclosure is not limited to this. The air-fuel ratio adjusting means 10 is not particularly limited as long as it is configured to be able to adjust the air-fuel ratio in the combustion chamber 103 of the general-purpose engine 100 according to the position of the slider 6 in the axial direction D1.

[0038] In one embodiment, the flyweight 4 directly presses the inner ring 12 of the bearing 2, but the present disclosure is not limited to this form. Fig. 4 is a diagram schematically showing a configuration of a governor device 1 according to some embodiments. In some embodiments, as illustrated in Fig. 4, the governor device 1 further includes an intermediate member 50 slidably disposed on the crankshaft 105 on the other side of the bearing 2 in the axial direction D1. The flyweight 4 is configured to press the inner ring 12 to one side in the axial direction D1 via the intermediate member 50.

[0039] In the embodiment illustrated in FIG. 4 , the intermediate member 50 is a ring that surrounds the crankshaft 105 from the outer periphery and includes a large diameter portion 52 and a small diameter portion 54. The large diameter portion 52 is thicker than the small diameter portion 54. The large diameter portion 52 is located on the other side of the small diameter portion 54 in the axial direction D1. The large diameter portion 52 includes an end face 56 of the intermediate member 50 on the other side of the axial direction D1. This end face 56 has a larger area than the end face 30 of the inner ring 12. The intermediate member 50 is disposed on the crankshaft 105 so that the end face 56 is located on the convex portion line 32. With this configuration, even a thin inner ring 12 can be easily pressed by the flyweight 4.

[0040] The contents described in each of the above embodiments can be understood, for example, as follows.

[0041] [1] The governor device (1) according to the present disclosure includes: A governor device for adjusting the rotation speed of a general-purpose engine (100), a bearing (2) slidably disposed on a crankshaft (105) of the general-purpose engine; a flyweight (4) configured to press the bearing to one side in the axial direction (D1) of the crankshaft with a pressing force (F1) corresponding to the rotation speed of the crankshaft; a slider (6) connected to the bearing so as to be movable in the axial direction; an urging member (8) connected to an end face (42) of the slider on one side in the axial direction, for urging the slider toward the other side in the axial direction; and an air-fuel ratio adjusting means (10) configured to be able to adjust the air-fuel ratio in a combustion chamber (103) of the general-purpose engine in accordance with the position of the slider in the axial direction.

[0042] The bearing can slide relative to the crankshaft even when lubricating oil is not continuously supplied. According to the configuration described in [1] above, the governor device can house the bearing in a housing other than the crankcase. This makes it possible to provide the governor device in a general-purpose engine without increasing the size of the engine.

[0043] Furthermore, according to the configuration described in [1] above, when the flyweight presses the bearing toward one side in the axial direction of the crankshaft, a governor force toward one side in the axial direction acts on the slider. Meanwhile, because the biasing member is connected to the end face of the slider on one side in the axial direction, a biasing force toward the other side in the axial direction acts on the slider. Because the acting directions of the governor force and the biasing force are opposite to each other in the axial direction, the movement of the slider can be stabilized. This improves the accuracy of air-fuel ratio adjustment by the air-fuel ratio adjusting means according to the position of the slider in the axial direction. This improves the accuracy of adjustment of the rotation speed of the general-purpose engine.

[0044] [2] In some embodiments, in the configuration described in [1] above, The bearing has an inner ring (12) including an inner peripheral surface (13) that slides on the surface (107) of the crankshaft, The flyweight is configured to press the inner ring toward one side in the axial direction.

[0045] According to the configuration described in [2] above, the bearing can be smoothly moved to one side in the axial direction.

[0046] [3] In some embodiments, in the configuration described in [2] above, an intermediate member (50) disposed slidably on the surface of the crankshaft on the other side of the bearing in the axial direction, The flyweight is configured to press the inner ring toward one side in the axial direction via the intermediate member.

[0047] According to the configuration described in [3] above, the intermediate member is arranged, so that even an inner ring with a thin wall thickness can be easily pressed by the flyweight.

[0048] [4] In some embodiments, in the configuration described in any one of [1] to [3] above, The bearing includes an inner ring (12) having an inner peripheral surface (13) that slides on a surface (107) of the crankshaft, an outer ring (14) that is disposed on the outer side of the inner ring in a radial direction (D2), and rolling elements (16) that are provided between the inner ring and the outer ring, The slider has a main body portion (34) located on one side of the bearing in the axial direction, and a protrusion portion (36) protruding from the main body portion on the other side in the axial direction, The outer ring is fixed to the protrusion.

[0049] According to the configuration described in [4] above, when the flyweight presses the bearing to one side in the axial direction of the crankshaft, the bearing moves to one side in the axial direction of the crankshaft, and the slider also moves to one side in the axial direction. Therefore, simply by arranging a bearing having an inner ring, an outer ring, and rolling elements on the crankshaft, it is possible to easily apply a governor force to the slider in the direction to one side in the axial direction.

[0050] [5] In some embodiments, in the configuration described in any one of [1] to [4] above, The general-purpose engine includes a recoil starter (116) capable of applying a rotational force to the crankshaft, the recoil starter including a recoil casing (120) that houses a drive pulley (118) provided on the crankshaft, The bearing is housed in the recoil casing.

[0051] The bearing can slide relative to the crankshaft even when lubricating oil is not continuously supplied. According to the configuration described in [5] above, the bearing is housed in the recoil casing, so that the governor device can be provided in the general-purpose engine without increasing its size.

[0052] [6] In some embodiments, in the configuration described in any one of [1] to [5] above, The flyweight is configured to be rotatable around a rotation center (C) formed at a base end (24), and includes an arm portion (18) extending from the base end toward the crankshaft, and a protrusion (20) protruding from a tip end (28) of the arm portion to one side in the axial direction.

[0053] According to the configuration described in [6] above, the pressing force of the flyweight can be transmitted to the bearing more efficiently than when no protrusion is provided. [Explanation of symbols]

[0054] 1 Governor device 2 bearings 4 Flyweight 6 Slider 8. Pressurizing member 10 Air-fuel ratio adjustment means 12 Inner Circle 13 Inner surface of inner ring 14 outer ring 16 rolling elements 18 Arm section 20 Convex part 22 Weight section 24 Base end of arm 26 holes 28 Tip of arm 34 Main body 36 Protrusion 42 Slider end face 44 recess 50 Intermediate materials 100 General-purpose engine 102 cylinders 103 Combustion chamber 104 Crankcase 105 crankshaft 106 Fuel Tank 107 Crankshaft surface 108 Air cleaner 110 Carburetor 112 Insulator 114 Muffler 116 Recoil Starter 118 Drive pulley 119 Claws 120 Recoil Casing 122 Valve 124 Valve shaft 126 Wire A1 Intake A2 exhaust C Rotation center D1 Axial direction D2 radial direction D3 Circumferential direction F1 Pressing force F2 Governor force F3 biasing force O axis P connection point R1 1st area R2 2nd area

Claims

1. A governor device for adjusting the rotation speed of a general-purpose engine, a bearing slidably disposed on a crankshaft of the general-purpose engine; a flyweight configured to press the bearing toward one side in the axial direction of the crankshaft with a pressing force corresponding to the rotation speed of the crankshaft; a slider connected to the bearing so as to be movable in the axial direction; a biasing member connected to an end surface of the slider on one side in the axial direction, for biasing the slider toward the other side in the axial direction; an air-fuel ratio adjusting means configured to adjust the air-fuel ratio in the combustion chamber of the general-purpose engine in accordance with the position of the slider in the axial direction, Governor device.

2. the bearing has an inner ring including an inner circumferential surface that slides on the surface of the crankshaft, The flyweight is configured to press the inner ring toward one side in the axial direction. The governor device according to claim 1 .

3. an intermediate member slidably disposed on the surface of the crankshaft on the other side of the bearing in the axial direction, the flyweight is configured to press the inner ring toward one side in the axial direction via the intermediate member. The governor device according to claim 2 .

4. the bearing includes an inner ring having an inner circumferential surface that slides on a surface of the crankshaft, an outer ring disposed radially outward of the inner ring, and rolling elements provided between the inner ring and the outer ring, the slider has a main body portion located on one side of the bearing in the axial direction, and a protrusion portion protruding from the main body portion on the other side in the axial direction, The outer ring is fixed to the protrusion. The governor device according to any one of claims 1 to 3.

5. the general-purpose engine includes a recoil starter capable of applying a rotational force to the crankshaft, the recoil starter including a recoil casing that houses a drive pulley provided on the crankshaft, The bearing is housed in the recoil casing. The governor device according to any one of claims 1 to 3.

6. The flyweight is configured to be rotatable about a rotation center formed at a base end, and includes an arm portion extending from the base end toward the crankshaft, and a protrusion protruding from a tip end of the arm portion toward one side in the axial direction. The governor device according to any one of claims 1 to 3.

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